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authorLinus Torvalds <torvalds@linux-foundation.org>2017-03-03 10:16:38 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2017-03-03 10:16:38 -0800
commit1827adb11ad26b2290dc9fe2aaf54976b2439865 (patch)
treee55db5fd2fa1241a586b5688ba3a88e4eae15d6f /include/linux
parent78769912f680fc0a79a67e798a0ae76f07e63a7b (diff)
parent5eca1c10cbaa9c366c18ca79f81f21c731e3dcc7 (diff)
Merge branch 'WIP.sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull sched.h split-up from Ingo Molnar: "The point of these changes is to significantly reduce the <linux/sched.h> header footprint, to speed up the kernel build and to have a cleaner header structure. After these changes the new <linux/sched.h>'s typical preprocessed size goes down from a previous ~0.68 MB (~22K lines) to ~0.45 MB (~15K lines), which is around 40% faster to build on typical configs. Not much changed from the last version (-v2) posted three weeks ago: I eliminated quirks, backmerged fixes plus I rebased it to an upstream SHA1 from yesterday that includes most changes queued up in -next plus all sched.h changes that were pending from Andrew. I've re-tested the series both on x86 and on cross-arch defconfigs, and did a bisectability test at a number of random points. I tried to test as many build configurations as possible, but some build breakage is probably still left - but it should be mostly limited to architectures that have no cross-compiler binaries available on kernel.org, and non-default configurations" * 'WIP.sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (146 commits) sched/headers: Clean up <linux/sched.h> sched/headers: Remove #ifdefs from <linux/sched.h> sched/headers: Remove the <linux/topology.h> include from <linux/sched.h> sched/headers, hrtimer: Remove the <linux/wait.h> include from <linux/hrtimer.h> sched/headers, x86/apic: Remove the <linux/pm.h> header inclusion from <asm/apic.h> sched/headers, timers: Remove the <linux/sysctl.h> include from <linux/timer.h> sched/headers: Remove <linux/magic.h> from <linux/sched/task_stack.h> sched/headers: Remove <linux/sched.h> from <linux/sched/init.h> sched/core: Remove unused prefetch_stack() sched/headers: Remove <linux/rculist.h> from <linux/sched.h> sched/headers: Remove the 'init_pid_ns' prototype from <linux/sched.h> sched/headers: Remove <linux/signal.h> from <linux/sched.h> sched/headers: Remove <linux/rwsem.h> from <linux/sched.h> sched/headers: Remove the runqueue_is_locked() prototype sched/headers: Remove <linux/sched.h> from <linux/sched/hotplug.h> sched/headers: Remove <linux/sched.h> from <linux/sched/debug.h> sched/headers: Remove <linux/sched.h> from <linux/sched/nohz.h> sched/headers: Remove <linux/sched.h> from <linux/sched/stat.h> sched/headers: Remove the <linux/gfp.h> include from <linux/sched.h> sched/headers: Remove <linux/rtmutex.h> from <linux/sched.h> ...
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/binfmts.h10
-rw-r--r--include/linux/blkdev.h1
-rw-r--r--include/linux/cgroup-defs.h13
-rw-r--r--include/linux/cpu.h2
-rw-r--r--include/linux/cpuset.h2
-rw-r--r--include/linux/cputime.h13
-rw-r--r--include/linux/cred.h3
-rw-r--r--include/linux/dcache.h1
-rw-r--r--include/linux/delayacct.h38
-rw-r--r--include/linux/dmar.h2
-rw-r--r--include/linux/elfcore.h2
-rw-r--r--include/linux/fault-inject.h2
-rw-r--r--include/linux/hrtimer.h1
-rw-r--r--include/linux/i2c.h1
-rw-r--r--include/linux/init_task.h4
-rw-r--r--include/linux/kasan.h11
-rw-r--r--include/linux/khugepaged.h3
-rw-r--r--include/linux/ksm.h1
-rw-r--r--include/linux/mm_types.h45
-rw-r--r--include/linux/mm_types_task.h87
-rw-r--r--include/linux/nmi.h37
-rw-r--r--include/linux/oom.h2
-rw-r--r--include/linux/perf_regs.h2
-rw-r--r--include/linux/pid.h2
-rw-r--r--include/linux/preempt.h21
-rw-r--r--include/linux/ptrace.h1
-rw-r--r--include/linux/rcupdate.h40
-rw-r--r--include/linux/rcupdate_wait.h50
-rw-r--r--include/linux/rcutiny.h11
-rw-r--r--include/linux/rhashtable.h2
-rw-r--r--include/linux/sched.h3489
-rw-r--r--include/linux/sched/autogroup.h31
-rw-r--r--include/linux/sched/clock.h104
-rw-r--r--include/linux/sched/coredump.h74
-rw-r--r--include/linux/sched/cpufreq.h27
-rw-r--r--include/linux/sched/cputime.h187
-rw-r--r--include/linux/sched/deadline.h8
-rw-r--r--include/linux/sched/debug.h50
-rw-r--r--include/linux/sched/hotplug.h24
-rw-r--r--include/linux/sched/idle.h86
-rw-r--r--include/linux/sched/init.h11
-rw-r--r--include/linux/sched/jobctl.h36
-rw-r--r--include/linux/sched/loadavg.h31
-rw-r--r--include/linux/sched/mm.h174
-rw-r--r--include/linux/sched/nohz.h43
-rw-r--r--include/linux/sched/numa_balancing.h46
-rw-r--r--include/linux/sched/prio.h6
-rw-r--r--include/linux/sched/rt.h10
-rw-r--r--include/linux/sched/signal.h613
-rw-r--r--include/linux/sched/stat.h40
-rw-r--r--include/linux/sched/sysctl.h10
-rw-r--r--include/linux/sched/task.h139
-rw-r--r--include/linux/sched/task_stack.h121
-rw-r--r--include/linux/sched/topology.h226
-rw-r--r--include/linux/sched/user.h61
-rw-r--r--include/linux/sched/wake_q.h53
-rw-r--r--include/linux/sched/xacct.h48
-rw-r--r--include/linux/signal.h57
-rw-r--r--include/linux/signal_types.h66
-rw-r--r--include/linux/signalfd.h2
-rw-r--r--include/linux/skbuff.h1
-rw-r--r--include/linux/sunrpc/types.h1
-rw-r--r--include/linux/taskstats_kern.h2
-rw-r--r--include/linux/timekeeping.h4
-rw-r--r--include/linux/timer.h2
-rw-r--r--include/linux/user_namespace.h3
-rw-r--r--include/linux/vmacache.h2
-rw-r--r--include/linux/wait.h1
68 files changed, 3288 insertions, 3011 deletions
diff --git a/include/linux/binfmts.h b/include/linux/binfmts.h
index 1303b570b18c..05488da3aee9 100644
--- a/include/linux/binfmts.h
+++ b/include/linux/binfmts.h
@@ -6,6 +6,8 @@
#include <asm/exec.h>
#include <uapi/linux/binfmts.h>
+struct filename;
+
#define CORENAME_MAX_SIZE 128
/*
@@ -123,4 +125,12 @@ extern void install_exec_creds(struct linux_binprm *bprm);
extern void set_binfmt(struct linux_binfmt *new);
extern ssize_t read_code(struct file *, unsigned long, loff_t, size_t);
+extern int do_execve(struct filename *,
+ const char __user * const __user *,
+ const char __user * const __user *);
+extern int do_execveat(int, struct filename *,
+ const char __user * const __user *,
+ const char __user * const __user *,
+ int);
+
#endif /* _LINUX_BINFMTS_H */
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index aecca0e7d9ca..796016e63c1d 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -2,6 +2,7 @@
#define _LINUX_BLKDEV_H
#include <linux/sched.h>
+#include <linux/sched/clock.h>
#ifdef CONFIG_BLOCK
diff --git a/include/linux/cgroup-defs.h b/include/linux/cgroup-defs.h
index 3c02404cfce9..6a3f850cabab 100644
--- a/include/linux/cgroup-defs.h
+++ b/include/linux/cgroup-defs.h
@@ -531,8 +531,8 @@ extern struct percpu_rw_semaphore cgroup_threadgroup_rwsem;
* cgroup_threadgroup_change_begin - threadgroup exclusion for cgroups
* @tsk: target task
*
- * Called from threadgroup_change_begin() and allows cgroup operations to
- * synchronize against threadgroup changes using a percpu_rw_semaphore.
+ * Allows cgroup operations to synchronize against threadgroup changes
+ * using a percpu_rw_semaphore.
*/
static inline void cgroup_threadgroup_change_begin(struct task_struct *tsk)
{
@@ -543,8 +543,7 @@ static inline void cgroup_threadgroup_change_begin(struct task_struct *tsk)
* cgroup_threadgroup_change_end - threadgroup exclusion for cgroups
* @tsk: target task
*
- * Called from threadgroup_change_end(). Counterpart of
- * cgroup_threadcgroup_change_begin().
+ * Counterpart of cgroup_threadcgroup_change_begin().
*/
static inline void cgroup_threadgroup_change_end(struct task_struct *tsk)
{
@@ -555,7 +554,11 @@ static inline void cgroup_threadgroup_change_end(struct task_struct *tsk)
#define CGROUP_SUBSYS_COUNT 0
-static inline void cgroup_threadgroup_change_begin(struct task_struct *tsk) {}
+static inline void cgroup_threadgroup_change_begin(struct task_struct *tsk)
+{
+ might_sleep();
+}
+
static inline void cgroup_threadgroup_change_end(struct task_struct *tsk) {}
#endif /* CONFIG_CGROUPS */
diff --git a/include/linux/cpu.h b/include/linux/cpu.h
index 21f9c74496e7..f92081234afd 100644
--- a/include/linux/cpu.h
+++ b/include/linux/cpu.h
@@ -30,6 +30,8 @@ struct cpu {
extern void boot_cpu_init(void);
extern void boot_cpu_state_init(void);
+extern void cpu_init(void);
+extern void trap_init(void);
extern int register_cpu(struct cpu *cpu, int num);
extern struct device *get_cpu_device(unsigned cpu);
diff --git a/include/linux/cpuset.h b/include/linux/cpuset.h
index bfc204e70338..611fce58d670 100644
--- a/include/linux/cpuset.h
+++ b/include/linux/cpuset.h
@@ -9,6 +9,8 @@
*/
#include <linux/sched.h>
+#include <linux/sched/topology.h>
+#include <linux/sched/task.h>
#include <linux/cpumask.h>
#include <linux/nodemask.h>
#include <linux/mm.h>
diff --git a/include/linux/cputime.h b/include/linux/cputime.h
deleted file mode 100644
index a691dc4ddc13..000000000000
--- a/include/linux/cputime.h
+++ /dev/null
@@ -1,13 +0,0 @@
-#ifndef __LINUX_CPUTIME_H
-#define __LINUX_CPUTIME_H
-
-#ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE
-#include <asm/cputime.h>
-
-#ifndef cputime_to_nsecs
-# define cputime_to_nsecs(__ct) \
- (cputime_to_usecs(__ct) * NSEC_PER_USEC)
-#endif
-
-#endif /* CONFIG_VIRT_CPU_ACCOUNTING_NATIVE */
-#endif /* __LINUX_CPUTIME_H */
diff --git a/include/linux/cred.h b/include/linux/cred.h
index f0e70a1bb3ac..b03e7d049a64 100644
--- a/include/linux/cred.h
+++ b/include/linux/cred.h
@@ -18,8 +18,9 @@
#include <linux/selinux.h>
#include <linux/atomic.h>
#include <linux/uidgid.h>
+#include <linux/sched.h>
+#include <linux/sched/user.h>
-struct user_struct;
struct cred;
struct inode;
diff --git a/include/linux/dcache.h b/include/linux/dcache.h
index 591b6c16f9c1..d2e38dc6172c 100644
--- a/include/linux/dcache.h
+++ b/include/linux/dcache.h
@@ -11,6 +11,7 @@
#include <linux/rcupdate.h>
#include <linux/lockref.h>
#include <linux/stringhash.h>
+#include <linux/wait.h>
struct path;
struct vfsmount;
diff --git a/include/linux/delayacct.h b/include/linux/delayacct.h
index 00e60f79a9cc..4178d2493547 100644
--- a/include/linux/delayacct.h
+++ b/include/linux/delayacct.h
@@ -18,8 +18,6 @@
#define _LINUX_DELAYACCT_H
#include <uapi/linux/taskstats.h>
-#include <linux/sched.h>
-#include <linux/slab.h>
/*
* Per-task flags relevant to delay accounting
@@ -30,7 +28,43 @@
#define DELAYACCT_PF_BLKIO 0x00000002 /* I am waiting on IO */
#ifdef CONFIG_TASK_DELAY_ACCT
+struct task_delay_info {
+ spinlock_t lock;
+ unsigned int flags; /* Private per-task flags */
+
+ /* For each stat XXX, add following, aligned appropriately
+ *
+ * struct timespec XXX_start, XXX_end;
+ * u64 XXX_delay;
+ * u32 XXX_count;
+ *
+ * Atomicity of updates to XXX_delay, XXX_count protected by
+ * single lock above (split into XXX_lock if contention is an issue).
+ */
+
+ /*
+ * XXX_count is incremented on every XXX operation, the delay
+ * associated with the operation is added to XXX_delay.
+ * XXX_delay contains the accumulated delay time in nanoseconds.
+ */
+ u64 blkio_start; /* Shared by blkio, swapin */
+ u64 blkio_delay; /* wait for sync block io completion */
+ u64 swapin_delay; /* wait for swapin block io completion */
+ u32 blkio_count; /* total count of the number of sync block */
+ /* io operations performed */
+ u32 swapin_count; /* total count of the number of swapin block */
+ /* io operations performed */
+
+ u64 freepages_start;
+ u64 freepages_delay; /* wait for memory reclaim */
+ u32 freepages_count; /* total count of memory reclaim */
+};
+#endif
+#include <linux/sched.h>
+#include <linux/slab.h>
+
+#ifdef CONFIG_TASK_DELAY_ACCT
extern int delayacct_on; /* Delay accounting turned on/off */
extern struct kmem_cache *delayacct_cache;
extern void delayacct_init(void);
diff --git a/include/linux/dmar.h b/include/linux/dmar.h
index e9bc9292bd3a..e8ffba1052d3 100644
--- a/include/linux/dmar.h
+++ b/include/linux/dmar.h
@@ -26,7 +26,7 @@
#include <linux/msi.h>
#include <linux/irqreturn.h>
#include <linux/rwsem.h>
-#include <linux/rcupdate.h>
+#include <linux/rculist.h>
struct acpi_dmar_header;
diff --git a/include/linux/elfcore.h b/include/linux/elfcore.h
index 698d51a0eea3..c8240a12c42d 100644
--- a/include/linux/elfcore.h
+++ b/include/linux/elfcore.h
@@ -3,6 +3,8 @@
#include <linux/user.h>
#include <linux/bug.h>
+#include <linux/sched/task_stack.h>
+
#include <asm/elf.h>
#include <uapi/linux/elfcore.h>
diff --git a/include/linux/fault-inject.h b/include/linux/fault-inject.h
index 9f4956d8601c..728d4e0292aa 100644
--- a/include/linux/fault-inject.h
+++ b/include/linux/fault-inject.h
@@ -61,6 +61,8 @@ static inline struct dentry *fault_create_debugfs_attr(const char *name,
#endif /* CONFIG_FAULT_INJECTION */
+struct kmem_cache;
+
#ifdef CONFIG_FAILSLAB
extern bool should_failslab(struct kmem_cache *s, gfp_t gfpflags);
#else
diff --git a/include/linux/hrtimer.h b/include/linux/hrtimer.h
index e52b427223ba..249e579ecd4c 100644
--- a/include/linux/hrtimer.h
+++ b/include/linux/hrtimer.h
@@ -19,7 +19,6 @@
#include <linux/ktime.h>
#include <linux/init.h>
#include <linux/list.h>
-#include <linux/wait.h>
#include <linux/percpu.h>
#include <linux/timer.h>
#include <linux/timerqueue.h>
diff --git a/include/linux/i2c.h b/include/linux/i2c.h
index bed8fbb45f31..6b183521c616 100644
--- a/include/linux/i2c.h
+++ b/include/linux/i2c.h
@@ -30,6 +30,7 @@
#include <linux/device.h> /* for struct device */
#include <linux/sched.h> /* for completion */
#include <linux/mutex.h>
+#include <linux/rtmutex.h>
#include <linux/irqdomain.h> /* for Host Notify IRQ */
#include <linux/of.h> /* for struct device_node */
#include <linux/swab.h> /* for swab16 */
diff --git a/include/linux/init_task.h b/include/linux/init_task.h
index 3a85d61f7614..91d9049f0039 100644
--- a/include/linux/init_task.h
+++ b/include/linux/init_task.h
@@ -12,8 +12,10 @@
#include <linux/securebits.h>
#include <linux/seqlock.h>
#include <linux/rbtree.h>
+#include <linux/sched/autogroup.h>
#include <net/net_namespace.h>
#include <linux/sched/rt.h>
+#include <linux/mm_types.h>
#include <asm/thread_info.h>
@@ -149,8 +151,6 @@ extern struct group_info init_groups;
extern struct cred init_cred;
-extern struct task_group root_task_group;
-
#ifdef CONFIG_CGROUP_SCHED
# define INIT_CGROUP_SCHED(tsk) \
.sched_task_group = &root_task_group,
diff --git a/include/linux/kasan.h b/include/linux/kasan.h
index c908b25bf5a5..ceb3fe78a0d3 100644
--- a/include/linux/kasan.h
+++ b/include/linux/kasan.h
@@ -1,7 +1,6 @@
#ifndef _LINUX_KASAN_H
#define _LINUX_KASAN_H
-#include <linux/sched.h>
#include <linux/types.h>
struct kmem_cache;
@@ -30,16 +29,10 @@ static inline void *kasan_mem_to_shadow(const void *addr)
}
/* Enable reporting bugs after kasan_disable_current() */
-static inline void kasan_enable_current(void)
-{
- current->kasan_depth++;
-}
+extern void kasan_enable_current(void);
/* Disable reporting bugs for current task */
-static inline void kasan_disable_current(void)
-{
- current->kasan_depth--;
-}
+extern void kasan_disable_current(void);
void kasan_unpoison_shadow(const void *address, size_t size);
diff --git a/include/linux/khugepaged.h b/include/linux/khugepaged.h
index 1e032a1ddb3e..5d9a400af509 100644
--- a/include/linux/khugepaged.h
+++ b/include/linux/khugepaged.h
@@ -1,7 +1,8 @@
#ifndef _LINUX_KHUGEPAGED_H
#define _LINUX_KHUGEPAGED_H
-#include <linux/sched.h> /* MMF_VM_HUGEPAGE */
+#include <linux/sched/coredump.h> /* MMF_VM_HUGEPAGE */
+
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
extern struct attribute_group khugepaged_attr_group;
diff --git a/include/linux/ksm.h b/include/linux/ksm.h
index 481c8c4627ca..e1cfda4bee58 100644
--- a/include/linux/ksm.h
+++ b/include/linux/ksm.h
@@ -12,6 +12,7 @@
#include <linux/pagemap.h>
#include <linux/rmap.h>
#include <linux/sched.h>
+#include <linux/sched/coredump.h>
struct stable_node;
struct mem_cgroup;
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index 4f6d440ad785..f60f45fe226f 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -1,9 +1,9 @@
#ifndef _LINUX_MM_TYPES_H
#define _LINUX_MM_TYPES_H
+#include <linux/mm_types_task.h>
+
#include <linux/auxvec.h>
-#include <linux/types.h>
-#include <linux/threads.h>
#include <linux/list.h>
#include <linux/spinlock.h>
#include <linux/rbtree.h>
@@ -13,7 +13,7 @@
#include <linux/uprobes.h>
#include <linux/page-flags-layout.h>
#include <linux/workqueue.h>
-#include <asm/page.h>
+
#include <asm/mmu.h>
#ifndef AT_VECTOR_SIZE_ARCH
@@ -24,11 +24,6 @@
struct address_space;
struct mem_cgroup;
-#define USE_SPLIT_PTE_PTLOCKS (NR_CPUS >= CONFIG_SPLIT_PTLOCK_CPUS)
-#define USE_SPLIT_PMD_PTLOCKS (USE_SPLIT_PTE_PTLOCKS && \
- IS_ENABLED(CONFIG_ARCH_ENABLE_SPLIT_PMD_PTLOCK))
-#define ALLOC_SPLIT_PTLOCKS (SPINLOCK_SIZE > BITS_PER_LONG/8)
-
/*
* Each physical page in the system has a struct page associated with
* it to keep track of whatever it is we are using the page for at the
@@ -231,17 +226,6 @@ struct page {
#endif
;
-struct page_frag {
- struct page *page;
-#if (BITS_PER_LONG > 32) || (PAGE_SIZE >= 65536)
- __u32 offset;
- __u32 size;
-#else
- __u16 offset;
- __u16 size;
-#endif
-};
-
#define PAGE_FRAG_CACHE_MAX_SIZE __ALIGN_MASK(32768, ~PAGE_MASK)
#define PAGE_FRAG_CACHE_MAX_ORDER get_order(PAGE_FRAG_CACHE_MAX_SIZE)
@@ -371,27 +355,6 @@ struct core_state {
struct completion startup;
};
-enum {
- MM_FILEPAGES, /* Resident file mapping pages */
- MM_ANONPAGES, /* Resident anonymous pages */
- MM_SWAPENTS, /* Anonymous swap entries */
- MM_SHMEMPAGES, /* Resident shared memory pages */
- NR_MM_COUNTERS
-};
-
-#if USE_SPLIT_PTE_PTLOCKS && defined(CONFIG_MMU)
-#define SPLIT_RSS_COUNTING
-/* per-thread cached information, */
-struct task_rss_stat {
- int events; /* for synchronization threshold */
- int count[NR_MM_COUNTERS];
-};
-#endif /* USE_SPLIT_PTE_PTLOCKS */
-
-struct mm_rss_stat {
- atomic_long_t count[NR_MM_COUNTERS];
-};
-
struct kioctx_table;
struct mm_struct {
struct vm_area_struct *mmap; /* list of VMAs */
@@ -534,6 +497,8 @@ struct mm_struct {
struct work_struct async_put_work;
};
+extern struct mm_struct init_mm;
+
static inline void mm_init_cpumask(struct mm_struct *mm)
{
#ifdef CONFIG_CPUMASK_OFFSTACK
diff --git a/include/linux/mm_types_task.h b/include/linux/mm_types_task.h
new file mode 100644
index 000000000000..136dfdf63ba1
--- /dev/null
+++ b/include/linux/mm_types_task.h
@@ -0,0 +1,87 @@
+#ifndef _LINUX_MM_TYPES_TASK_H
+#define _LINUX_MM_TYPES_TASK_H
+
+/*
+ * Here are the definitions of the MM data types that are embedded in 'struct task_struct'.
+ *
+ * (These are defined separately to decouple sched.h from mm_types.h as much as possible.)
+ */
+
+#include <linux/types.h>
+#include <linux/threads.h>
+#include <linux/atomic.h>
+#include <linux/cpumask.h>
+
+#include <asm/page.h>
+
+#define USE_SPLIT_PTE_PTLOCKS (NR_CPUS >= CONFIG_SPLIT_PTLOCK_CPUS)
+#define USE_SPLIT_PMD_PTLOCKS (USE_SPLIT_PTE_PTLOCKS && \
+ IS_ENABLED(CONFIG_ARCH_ENABLE_SPLIT_PMD_PTLOCK))
+#define ALLOC_SPLIT_PTLOCKS (SPINLOCK_SIZE > BITS_PER_LONG/8)
+
+/*
+ * The per task VMA cache array:
+ */
+#define VMACACHE_BITS 2
+#define VMACACHE_SIZE (1U << VMACACHE_BITS)
+#define VMACACHE_MASK (VMACACHE_SIZE - 1)
+
+struct vmacache {
+ u32 seqnum;
+ struct vm_area_struct *vmas[VMACACHE_SIZE];
+};
+
+enum {
+ MM_FILEPAGES, /* Resident file mapping pages */
+ MM_ANONPAGES, /* Resident anonymous pages */
+ MM_SWAPENTS, /* Anonymous swap entries */
+ MM_SHMEMPAGES, /* Resident shared memory pages */
+ NR_MM_COUNTERS
+};
+
+#if USE_SPLIT_PTE_PTLOCKS && defined(CONFIG_MMU)
+#define SPLIT_RSS_COUNTING
+/* per-thread cached information, */
+struct task_rss_stat {
+ int events; /* for synchronization threshold */
+ int count[NR_MM_COUNTERS];
+};
+#endif /* USE_SPLIT_PTE_PTLOCKS */
+
+struct mm_rss_stat {
+ atomic_long_t count[NR_MM_COUNTERS];
+};
+
+struct page_frag {
+ struct page *page;
+#if (BITS_PER_LONG > 32) || (PAGE_SIZE >= 65536)
+ __u32 offset;
+ __u32 size;
+#else
+ __u16 offset;
+ __u16 size;
+#endif
+};
+
+/* Track pages that require TLB flushes */
+struct tlbflush_unmap_batch {
+#ifdef CONFIG_ARCH_WANT_BATCHED_UNMAP_TLB_FLUSH
+ /*
+ * Each bit set is a CPU that potentially has a TLB entry for one of
+ * the PFNs being flushed. See set_tlb_ubc_flush_pending().
+ */
+ struct cpumask cpumask;
+
+ /* True if any bit in cpumask is set */
+ bool flush_required;
+
+ /*
+ * If true then the PTE was dirty when unmapped. The entry must be
+ * flushed before IO is initiated or a stale TLB entry potentially
+ * allows an update without redirtying the page.
+ */
+ bool writable;
+#endif
+};
+
+#endif /* _LINUX_MM_TYPES_TASK_H */
diff --git a/include/linux/nmi.h b/include/linux/nmi.h
index 0a3fadc32693..aa3cd0878270 100644
--- a/include/linux/nmi.h
+++ b/include/linux/nmi.h
@@ -7,6 +7,43 @@
#include <linux/sched.h>
#include <asm/irq.h>
+#ifdef CONFIG_LOCKUP_DETECTOR
+extern void touch_softlockup_watchdog_sched(void);
+extern void touch_softlockup_watchdog(void);
+extern void touch_softlockup_watchdog_sync(void);
+extern void touch_all_softlockup_watchdogs(void);
+extern int proc_dowatchdog_thresh(struct ctl_table *table, int write,
+ void __user *buffer,
+ size_t *lenp, loff_t *ppos);
+extern unsigned int softlockup_panic;
+extern unsigned int hardlockup_panic;
+void lockup_detector_init(void);
+#else
+static inline void touch_softlockup_watchdog_sched(void)
+{
+}
+static inline void touch_softlockup_watchdog(void)
+{
+}
+static inline void touch_softlockup_watchdog_sync(void)
+{
+}
+static inline void touch_all_softlockup_watchdogs(void)
+{
+}
+static inline void lockup_detector_init(void)
+{
+}
+#endif
+
+#ifdef CONFIG_DETECT_HUNG_TASK
+void reset_hung_task_detector(void);
+#else
+static inline void reset_hung_task_detector(void)
+{
+}
+#endif
+
/*
* The run state of the lockup detectors is controlled by the content of the
* 'watchdog_enabled' variable. Each lockup detector has its dedicated bit -
diff --git a/include/linux/oom.h b/include/linux/oom.h
index b4e36e92bc87..8a266e2be5a6 100644
--- a/include/linux/oom.h
+++ b/include/linux/oom.h
@@ -2,7 +2,7 @@
#define __INCLUDE_LINUX_OOM_H
-#include <linux/sched.h>
+#include <linux/sched/signal.h>
#include <linux/types.h>
#include <linux/nodemask.h>
#include <uapi/linux/oom.h>
diff --git a/include/linux/perf_regs.h b/include/linux/perf_regs.h
index a5f98d53d732..9b7dd59fe28d 100644
--- a/include/linux/perf_regs.h
+++ b/include/linux/perf_regs.h
@@ -1,6 +1,8 @@
#ifndef _LINUX_PERF_REGS_H
#define _LINUX_PERF_REGS_H
+#include <linux/sched/task_stack.h>
+
struct perf_regs {
__u64 abi;
struct pt_regs *regs;
diff --git a/include/linux/pid.h b/include/linux/pid.h
index 298ead5512e5..4d179316e431 100644
--- a/include/linux/pid.h
+++ b/include/linux/pid.h
@@ -1,7 +1,7 @@
#ifndef _LINUX_PID_H
#define _LINUX_PID_H
-#include <linux/rcupdate.h>
+#include <linux/rculist.h>
enum pid_type
{
diff --git a/include/linux/preempt.h b/include/linux/preempt.h
index 7eeceac52dea..cae461224948 100644
--- a/include/linux/preempt.h
+++ b/include/linux/preempt.h
@@ -55,6 +55,27 @@
/* We use the MSB mostly because its available */
#define PREEMPT_NEED_RESCHED 0x80000000
+#define PREEMPT_DISABLED (PREEMPT_DISABLE_OFFSET + PREEMPT_ENABLED)
+
+/*
+ * Disable preemption until the scheduler is running -- use an unconditional
+ * value so that it also works on !PREEMPT_COUNT kernels.
+ *
+ * Reset by start_kernel()->sched_init()->init_idle()->init_idle_preempt_count().
+ */
+#define INIT_PREEMPT_COUNT PREEMPT_OFFSET
+
+/*
+ * Initial preempt_count value; reflects the preempt_count schedule invariant
+ * which states that during context switches:
+ *
+ * preempt_count() == 2*PREEMPT_DISABLE_OFFSET
+ *
+ * Note: PREEMPT_DISABLE_OFFSET is 0 for !PREEMPT_COUNT kernels.
+ * Note: See finish_task_switch().
+ */
+#define FORK_PREEMPT_COUNT (2*PREEMPT_DISABLE_OFFSET + PREEMPT_ENABLED)
+
/* preempt_count() and related functions, depends on PREEMPT_NEED_RESCHED */
#include <asm/preempt.h>
diff --git a/include/linux/ptrace.h b/include/linux/ptrace.h
index e0e539321ab9..422bc2e4cb6a 100644
--- a/include/linux/ptrace.h
+++ b/include/linux/ptrace.h
@@ -3,6 +3,7 @@
#include <linux/compiler.h> /* For unlikely. */
#include <linux/sched.h> /* For struct task_struct. */
+#include <linux/sched/signal.h> /* For send_sig(), same_thread_group(), etc. */
#include <linux/err.h> /* for IS_ERR_VALUE */
#include <linux/bug.h> /* For BUG_ON. */
#include <linux/pid_namespace.h> /* For task_active_pid_ns. */
diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h
index 6ade6a52d9d4..de88b33c0974 100644
--- a/include/linux/rcupdate.h
+++ b/include/linux/rcupdate.h
@@ -40,7 +40,6 @@
#include <linux/cpumask.h>
#include <linux/seqlock.h>
#include <linux/lockdep.h>
-#include <linux/completion.h>
#include <linux/debugobjects.h>
#include <linux/bug.h>
#include <linux/compiler.h>
@@ -226,45 +225,6 @@ void call_rcu_sched(struct rcu_head *head,
void synchronize_sched(void);
-/*
- * Structure allowing asynchronous waiting on RCU.
- */
-struct rcu_synchronize {
- struct rcu_head head;
- struct completion completion;
-};
-void wakeme_after_rcu(struct rcu_head *head);
-
-void __wait_rcu_gp(bool checktiny, int n, call_rcu_func_t *crcu_array,
- struct rcu_synchronize *rs_array);
-
-#define _wait_rcu_gp(checktiny, ...) \
-do { \
- call_rcu_func_t __crcu_array[] = { __VA_ARGS__ }; \
- struct rcu_synchronize __rs_array[ARRAY_SIZE(__crcu_array)]; \
- __wait_rcu_gp(checktiny, ARRAY_SIZE(__crcu_array), \
- __crcu_array, __rs_array); \
-} while (0)
-
-#define wait_rcu_gp(...) _wait_rcu_gp(false, __VA_ARGS__)
-
-/**
- * synchronize_rcu_mult - Wait concurrently for multiple grace periods
- * @...: List of call_rcu() functions for the flavors to wait on.
- *
- * This macro waits concurrently for multiple flavors of RCU grace periods.
- * For example, synchronize_rcu_mult(call_rcu, call_rcu_bh) would wait
- * on concurrent RCU and RCU-bh grace periods. Waiting on a give SRCU
- * domain requires you to write a wrapper function for that SRCU domain's
- * call_srcu() function, supplying the corresponding srcu_struct.
- *
- * If Tiny RCU, tell _wait_rcu_gp() not to bother waiting for RCU
- * or RCU-bh, given that anywhere synchronize_rcu_mult() can be called
- * is automatically a grace period.
- */
-#define synchronize_rcu_mult(...) \
- _wait_rcu_gp(IS_ENABLED(CONFIG_TINY_RCU), __VA_ARGS__)
-
/**
* call_rcu_tasks() - Queue an RCU for invocation task-based grace period
* @head: structure to be used for queueing the RCU updates.
diff --git a/include/linux/rcupdate_wait.h b/include/linux/rcupdate_wait.h
new file mode 100644
index 000000000000..e774b4f5f220
--- /dev/null
+++ b/include/linux/rcupdate_wait.h
@@ -0,0 +1,50 @@
+#ifndef _LINUX_SCHED_RCUPDATE_WAIT_H
+#define _LINUX_SCHED_RCUPDATE_WAIT_H
+
+/*
+ * RCU synchronization types and methods:
+ */
+
+#include <linux/rcupdate.h>
+#include <linux/completion.h>
+
+/*
+ * Structure allowing asynchronous waiting on RCU.
+ */
+struct rcu_synchronize {
+ struct rcu_head head;
+ struct completion completion;
+};
+void wakeme_after_rcu(struct rcu_head *head);
+
+void __wait_rcu_gp(bool checktiny, int n, call_rcu_func_t *crcu_array,
+ struct rcu_synchronize *rs_array);
+
+#define _wait_rcu_gp(checktiny, ...) \
+do { \
+ call_rcu_func_t __crcu_array[] = { __VA_ARGS__ }; \
+ struct rcu_synchronize __rs_array[ARRAY_SIZE(__crcu_array)]; \
+ __wait_rcu_gp(checktiny, ARRAY_SIZE(__crcu_array), \
+ __crcu_array, __rs_array); \
+} while (0)
+
+#define wait_rcu_gp(...) _wait_rcu_gp(false, __VA_ARGS__)
+
+/**
+ * synchronize_rcu_mult - Wait concurrently for multiple grace periods
+ * @...: List of call_rcu() functions for the flavors to wait on.
+ *
+ * This macro waits concurrently for multiple flavors of RCU grace periods.
+ * For example, synchronize_rcu_mult(call_rcu, call_rcu_bh) would wait
+ * on concurrent RCU and RCU-bh grace periods. Waiting on a give SRCU
+ * domain requires you to write a wrapper function for that SRCU domain's
+ * call_srcu() function, supplying the corresponding srcu_struct.
+ *
+ * If Tiny RCU, tell _wait_rcu_gp() not to bother waiting for RCU
+ * or RCU-bh, given that anywhere synchronize_rcu_mult() can be called
+ * is automatically a grace period.
+ */
+#define synchronize_rcu_mult(...) \
+ _wait_rcu_gp(IS_ENABLED(CONFIG_TINY_RCU), __VA_ARGS__)
+
+#endif /* _LINUX_SCHED_RCUPDATE_WAIT_H */
diff --git a/include/linux/rcutiny.h b/include/linux/rcutiny.h
index 4f9b2fa2173d..b452953e21c8 100644
--- a/include/linux/rcutiny.h
+++ b/include/linux/rcutiny.h
@@ -53,15 +53,8 @@ static inline void cond_synchronize_sched(unsigned long oldstate)
might_sleep();
}
-static inline void rcu_barrier_bh(void)
-{
- wait_rcu_gp(call_rcu_bh);
-}
-
-static inline void rcu_barrier_sched(void)
-{
- wait_rcu_gp(call_rcu_sched);
-}
+extern void rcu_barrier_bh(void);
+extern void rcu_barrier_sched(void);
static inline void synchronize_rcu_expedited(void)
{
diff --git a/include/linux/rhashtable.h b/include/linux/rhashtable.h
index f2e12a845910..092292b6675e 100644
--- a/include/linux/rhashtable.h
+++ b/include/linux/rhashtable.h
@@ -25,7 +25,7 @@
#include <linux/list_nulls.h>
#include <linux/workqueue.h>
#include <linux/mutex.h>
-#include <linux/rcupdate.h>
+#include <linux/rculist.h>
/*
* The end of the chain is marked with a special nulls marks which has
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 4a28deb5f210..d67eee84fd43 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1,197 +1,57 @@
#ifndef _LINUX_SCHED_H
#define _LINUX_SCHED_H
-#include <uapi/linux/sched.h>
-
-#include <linux/sched/prio.h>
-
-
-struct sched_param {
- int sched_priority;
-};
-
-#include <asm/param.h> /* for HZ */
+/*
+ * Define 'struct task_struct' and provide the main scheduler
+ * APIs (schedule(), wakeup variants, etc.)
+ */
-#include <linux/capability.h>
-#include <linux/threads.h>
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/timex.h>
-#include <linux/jiffies.h>
-#include <linux/plist.h>
-#include <linux/rbtree.h>
-#include <linux/thread_info.h>
-#include <linux/cpumask.h>
-#include <linux/errno.h>
-#include <linux/nodemask.h>
-#include <linux/mm_types.h>
-#include <linux/preempt.h>
+#include <uapi/linux/sched.h>
-#include <asm/page.h>
-#include <asm/ptrace.h>
+#include <asm/current.h>
-#include <linux/smp.h>
+#include <linux/pid.h>
#include <linux/sem.h>
#include <linux/shm.h>
-#include <linux/signal.h>
-#include <linux/compiler.h>
-#include <linux/completion.h>
-#include <linux/pid.h>
-#include <linux/percpu.h>
-#include <linux/topology.h>
+#include <linux/kcov.h>
+#include <linux/mutex.h>
+#include <linux/plist.h>
+#include <linux/hrtimer.h>
#include <linux/seccomp.h>
+#include <linux/nodemask.h>
#include <linux/rcupdate.h>
-#include <linux/rculist.h>
-#include <linux/rtmutex.h>
-
-#include <linux/time.h>
-#include <linux/param.h>
#include <linux/resource.h>
-#include <linux/timer.h>
-#include <linux/hrtimer.h>
-#include <linux/kcov.h>
-#include <linux/task_io_accounting.h>
#include <linux/latencytop.h>
-#include <linux/cred.h>
-#include <linux/llist.h>
-#include <linux/uidgid.h>
-#include <linux/gfp.h>
-#include <linux/magic.h>
-#include <linux/cgroup-defs.h>
-
-#include <asm/processor.h>
-
-#define SCHED_ATTR_SIZE_VER0 48 /* sizeof first published struct */
-
-/*
- * Extended scheduling parameters data structure.
- *
- * This is needed because the original struct sched_param can not be
- * altered without introducing ABI issues with legacy applications
- * (e.g., in sched_getparam()).
- *
- * However, the possibility of specifying more than just a priority for
- * the tasks may be useful for a wide variety of application fields, e.g.,
- * multimedia, streaming, automation and control, and many others.
- *
- * This variant (sched_attr) is meant at describing a so-called
- * sporadic time-constrained task. In such model a task is specified by:
- * - the activation period or minimum instance inter-arrival time;
- * - the maximum (or average, depending on the actual scheduling
- * discipline) computation time of all instances, a.k.a. runtime;
- * - the deadline (relative to the actual activation time) of each
- * instance.
- * Very briefly, a periodic (sporadic) task asks for the execution of
- * some specific computation --which is typically called an instance--
- * (at most) every period. Moreover, each instance typically lasts no more
- * than the runtime and must be completed by time instant t equal to
- * the instance activation time + the deadline.
- *
- * This is reflected by the actual fields of the sched_attr structure:
- *
- * @size size of the structure, for fwd/bwd compat.
- *
- * @sched_policy task's scheduling policy
- * @sched_flags for customizing the scheduler behaviour
- * @sched_nice task's nice value (SCHED_NORMAL/BATCH)
- * @sched_priority task's static priority (SCHED_FIFO/RR)
- * @sched_deadline representative of the task's deadline
- * @sched_runtime representative of the task's runtime
- * @sched_period representative of the task's period
- *
- * Given this task model, there are a multiplicity of scheduling algorithms
- * and policies, that can be used to ensure all the tasks will make their
- * timing constraints.
- *
- * As of now, the SCHED_DEADLINE policy (sched_dl scheduling class) is the
- * only user of this new interface. More information about the algorithm
- * available in the scheduling class file or in Documentation/.
- */
-struct sched_attr {
- u32 size;
-
- u32 sched_policy;
- u64 sched_flags;
-
- /* SCHED_NORMAL, SCHED_BATCH */
- s32 sched_nice;
-
- /* SCHED_FIFO, SCHED_RR */
- u32 sched_priority;
-
- /* SCHED_DEADLINE */
- u64 sched_runtime;
- u64 sched_deadline;
- u64 sched_period;
-};
+#include <linux/sched/prio.h>
+#include <linux/signal_types.h>
+#include <linux/mm_types_task.h>
+#include <linux/task_io_accounting.h>
-struct futex_pi_state;
-struct robust_list_head;
+/* task_struct member predeclarations (sorted alphabetically): */
+struct audit_context;
+struct backing_dev_info;
struct bio_list;
-struct fs_struct;
-struct perf_event_context;
struct blk_plug;
-struct filename;
+struct cfs_rq;
+struct fs_struct;
+struct futex_pi_state;
+struct io_context;
+struct mempolicy;
struct nameidata;
-
-#define VMACACHE_BITS 2
-#define VMACACHE_SIZE (1U << VMACACHE_BITS)
-#define VMACACHE_MASK (VMACACHE_SIZE - 1)
-
-/*
- * These are the constant used to fake the fixed-point load-average
- * counting. Some notes:
- * - 11 bit fractions expand to 22 bits by the multiplies: this gives
- * a load-average precision of 10 bits integer + 11 bits fractional
- * - if you want to count load-averages more often, you need more
- * precision, or rounding will get you. With 2-second counting freq,
- * the EXP_n values would be 1981, 2034 and 2043 if still using only
- * 11 bit fractions.
- */
-extern unsigned long avenrun[]; /* Load averages */
-extern void get_avenrun(unsigned long *loads, unsigned long offset, int shift);
-
-#define FSHIFT 11 /* nr of bits of precision */
-#define FIXED_1 (1<<FSHIFT) /* 1.0 as fixed-point */
-#define LOAD_FREQ (5*HZ+1) /* 5 sec intervals */
-#define EXP_1 1884 /* 1/exp(5sec/1min) as fixed-point */
-#define EXP_5 2014 /* 1/exp(5sec/5min) */
-#define EXP_15 2037 /* 1/exp(5sec/15min) */
-
-#define CALC_LOAD(load,exp,n) \
- load *= exp; \
- load += n*(FIXED_1-exp); \
- load >>= FSHIFT;
-
-extern unsigned long total_forks;
-extern int nr_threads;
-DECLARE_PER_CPU(unsigned long, process_counts);
-extern int nr_processes(void);
-extern unsigned long nr_running(void);
-extern bool single_task_running(void);
-extern unsigned long nr_iowait(void);
-extern unsigned long nr_iowait_cpu(int cpu);
-extern void get_iowait_load(unsigned long *nr_waiters, unsigned long *load);
-
-extern void calc_global_load(unsigned long ticks);
-
-#if defined(CONFIG_SMP) && defined(CONFIG_NO_HZ_COMMON)
-extern void cpu_load_update_nohz_start(void);
-extern void cpu_load_update_nohz_stop(void);
-#else
-static inline void cpu_load_update_nohz_start(void) { }
-static inline void cpu_load_update_nohz_stop(void) { }
-#endif
-
-extern void dump_cpu_task(int cpu);
-
+struct nsproxy;
+struct perf_event_context;
+struct pid_namespace;
+struct pipe_inode_info;
+struct rcu_node;
+struct reclaim_state;
+struct robust_list_head;
+struct sched_attr;
+struct sched_param;
struct seq_file;
-struct cfs_rq;
+struct sighand_struct;
+struct signal_struct;
+struct task_delay_info;
struct task_group;
-#ifdef CONFIG_SCHED_DEBUG
-extern void proc_sched_show_task(struct task_struct *p, struct seq_file *m);
-extern void proc_sched_set_task(struct task_struct *p);
-#endif
/*
* Task state bitmask. NOTE! These bits are also
@@ -203,53 +63,53 @@ extern void proc_sched_set_task(struct task_struct *p);
* modifying one set can't modify the other one by
* mistake.
*/
-#define TASK_RUNNING 0
-#define TASK_INTERRUPTIBLE 1
-#define TASK_UNINTERRUPTIBLE 2
-#define __TASK_STOPPED 4
-#define __TASK_TRACED 8
-/* in tsk->exit_state */
-#define EXIT_DEAD 16
-#define EXIT_ZOMBIE 32
-#define EXIT_TRACE (EXIT_ZOMBIE | EXIT_DEAD)
-/* in tsk->state again */
-#define TASK_DEAD 64
-#define TASK_WAKEKILL 128
-#define TASK_WAKING 256
-#define TASK_PARKED 512
-#define TASK_NOLOAD 1024
-#define TASK_NEW 2048
-#define TASK_STATE_MAX 4096
-
-#define TASK_STATE_TO_CHAR_STR "RSDTtXZxKWPNn"
-
-extern char ___assert_task_state[1 - 2*!!(
- sizeof(TASK_STATE_TO_CHAR_STR)-1 != ilog2(TASK_STATE_MAX)+1)];
-
-/* Convenience macros for the sake of set_current_state */
-#define TASK_KILLABLE (TASK_WAKEKILL | TASK_UNINTERRUPTIBLE)
-#define TASK_STOPPED (TASK_WAKEKILL | __TASK_STOPPED)
-#define TASK_TRACED (TASK_WAKEKILL | __TASK_TRACED)
-
-#define TASK_IDLE (TASK_UNINTERRUPTIBLE | TASK_NOLOAD)
-
-/* Convenience macros for the sake of wake_up */
-#define TASK_NORMAL (TASK_INTERRUPTIBLE | TASK_UNINTERRUPTIBLE)
-#define TASK_ALL (TASK_NORMAL | __TASK_STOPPED | __TASK_TRACED)
-
-/* get_task_state() */
-#define TASK_REPORT (TASK_RUNNING | TASK_INTERRUPTIBLE | \
- TASK_UNINTERRUPTIBLE | __TASK_STOPPED | \
- __TASK_TRACED | EXIT_ZOMBIE | EXIT_DEAD)
-
-#define task_is_traced(task) ((task->state & __TASK_TRACED) != 0)
-#define task_is_stopped(task) ((task->state & __TASK_STOPPED) != 0)
-#define task_is_stopped_or_traced(task) \
- ((task->state & (__TASK_STOPPED | __TASK_TRACED)) != 0)
-#define task_contributes_to_load(task) \
- ((task->state & TASK_UNINTERRUPTIBLE) != 0 && \
- (task->flags & PF_FROZEN) == 0 && \
- (task->state & TASK_NOLOAD) == 0)
+
+/* Used in tsk->state: */
+#define TASK_RUNNING 0
+#define TASK_INTERRUPTIBLE 1
+#define TASK_UNINTERRUPTIBLE 2
+#define __TASK_STOPPED 4
+#define __TASK_TRACED 8
+/* Used in tsk->exit_state: */
+#define EXIT_DEAD 16
+#define EXIT_ZOMBIE 32
+#define EXIT_TRACE (EXIT_ZOMBIE | EXIT_DEAD)
+/* Used in tsk->state again: */
+#define TASK_DEAD 64
+#define TASK_WAKEKILL 128
+#define TASK_WAKING 256
+#define TASK_PARKED 512
+#define TASK_NOLOAD 1024
+#define TASK_NEW 2048
+#define TASK_STATE_MAX 4096
+
+#define TASK_STATE_TO_CHAR_STR "RSDTtXZxKWPNn"
+
+/* Convenience macros for the sake of set_current_state: */
+#define TASK_KILLABLE (TASK_WAKEKILL | TASK_UNINTERRUPTIBLE)
+#define TASK_STOPPED (TASK_WAKEKILL | __TASK_STOPPED)
+#define TASK_TRACED (TASK_WAKEKILL | __TASK_TRACED)
+
+#define TASK_IDLE (TASK_UNINTERRUPTIBLE | TASK_NOLOAD)
+
+/* Convenience macros for the sake of wake_up(): */
+#define TASK_NORMAL (TASK_INTERRUPTIBLE | TASK_UNINTERRUPTIBLE)
+#define TASK_ALL (TASK_NORMAL | __TASK_STOPPED | __TASK_TRACED)
+
+/* get_task_state(): */
+#define TASK_REPORT (TASK_RUNNING | TASK_INTERRUPTIBLE | \
+ TASK_UNINTERRUPTIBLE | __TASK_STOPPED | \
+ __TASK_TRACED | EXIT_ZOMBIE | EXIT_DEAD)
+
+#define task_is_traced(task) ((task->state & __TASK_TRACED) != 0)
+
+#define task_is_stopped(task) ((task->state & __TASK_STOPPED) != 0)
+
+#define task_is_stopped_or_traced(task) ((task->state & (__TASK_STOPPED | __TASK_TRACED)) != 0)
+
+#define task_contributes_to_load(task) ((task->state & TASK_UNINTERRUPTIBLE) != 0 && \
+ (task->flags & PF_FROZEN) == 0 && \
+ (task->state & TASK_NOLOAD) == 0)
#ifdef CONFIG_DEBUG_ATOMIC_SLEEP
@@ -299,139 +159,24 @@ extern char ___assert_task_state[1 - 2*!!(
*
* Also see the comments of try_to_wake_up().
*/
-#define __set_current_state(state_value) \
- do { current->state = (state_value); } while (0)
-#define set_current_state(state_value) \
- smp_store_mb(current->state, (state_value))
-
+#define __set_current_state(state_value) do { current->state = (state_value); } while (0)
+#define set_current_state(state_value) smp_store_mb(current->state, (state_value))
#endif
-/* Task command name length */
-#define TASK_COMM_LEN 16
-
-#include <linux/spinlock.h>
-
-/*
- * This serializes "schedule()" and also protects
- * the run-queue from deletions/modifications (but
- * _adding_ to the beginning of the run-queue has
- * a separate lock).
- */
-extern rwlock_t tasklist_lock;
-extern spinlock_t mmlist_lock;
-
-struct task_struct;
-
-#ifdef CONFIG_PROVE_RCU
-extern int lockdep_tasklist_lock_is_held(void);
-#endif /* #ifdef CONFIG_PROVE_RCU */
-
-extern void sched_init(void);
-extern void sched_init_smp(void);
-extern asmlinkage void schedule_tail(struct task_struct *prev);
-extern void init_idle(struct task_struct *idle, int cpu);
-extern void init_idle_bootup_task(struct task_struct *idle);
-
-extern cpumask_var_t cpu_isolated_map;
-
-extern int runqueue_is_locked(int cpu);
-
-#if defined(CONFIG_SMP) && defined(CONFIG_NO_HZ_COMMON)
-extern void nohz_balance_enter_idle(int cpu);
-extern void set_cpu_sd_state_idle(void);
-extern int get_nohz_timer_target(void);
-#else
-static inline void nohz_balance_enter_idle(int cpu) { }
-static inline void set_cpu_sd_state_idle(void) { }
-#endif
-
-/*
- * Only dump TASK_* tasks. (0 for all tasks)
- */
-extern void show_state_filter(unsigned long state_filter);
-
-static inline void show_state(void)
-{
- show_state_filter(0);
-}
+/* Task command name length: */
+#define TASK_COMM_LEN 16
-extern void show_regs(struct pt_regs *);
+extern cpumask_var_t cpu_isolated_map;
-/*
- * TASK is a pointer to the task whose backtrace we want to see (or NULL for current
- * task), SP is the stack pointer of the first frame that should be shown in the back
- * trace (or NULL if the entire call-chain of the task should be shown).
- */
-extern void show_stack(struct task_struct *task, unsigned long *sp);
-
-extern void cpu_init (void);
-extern void trap_init(void);
-extern void update_process_times(int user);
extern void scheduler_tick(void);
-extern int sched_cpu_starting(unsigned int cpu);
-extern int sched_cpu_activate(unsigned int cpu);
-extern int sched_cpu_deactivate(unsigned int cpu);
-
-#ifdef CONFIG_HOTPLUG_CPU
-extern int sched_cpu_dying(unsigned int cpu);
-#else
-# define sched_cpu_dying NULL
-#endif
-
-extern void sched_show_task(struct task_struct *p);
-
-#ifdef CONFIG_LOCKUP_DETECTOR
-extern void touch_softlockup_watchdog_sched(void);
-extern void touch_softlockup_watchdog(void);
-extern void touch_softlockup_watchdog_sync(void);
-extern void touch_all_softlockup_watchdogs(void);
-extern int proc_dowatchdog_thresh(struct ctl_table *table, int write,
- void __user *buffer,
- size_t *lenp, loff_t *ppos);
-extern unsigned int softlockup_panic;
-extern unsigned int hardlockup_panic;
-void lockup_detector_init(void);
-#else
-static inline void touch_softlockup_watchdog_sched(void)
-{
-}
-static inline void touch_softlockup_watchdog(void)
-{
-}
-static inline void touch_softlockup_watchdog_sync(void)
-{
-}
-static inline void touch_all_softlockup_watchdogs(void)
-{
-}
-static inline void lockup_detector_init(void)
-{
-}
-#endif
-
-#ifdef CONFIG_DETECT_HUNG_TASK
-void reset_hung_task_detector(void);
-#else
-static inline void reset_hung_task_detector(void)
-{
-}
-#endif
-
-/* Attach to any functions which should be ignored in wchan output. */
-#define __sched __attribute__((__section__(".sched.text")))
-/* Linker adds these: start and end of __sched functions */
-extern char __sched_text_start[], __sched_text_end[];
+#define MAX_SCHEDULE_TIMEOUT LONG_MAX
-/* Is this address in the __sched functions? */
-extern int in_sched_functions(unsigned long addr);
-
-#define MAX_SCHEDULE_TIMEOUT LONG_MAX
-extern signed long schedule_timeout(signed long timeout);
-extern signed long schedule_timeout_interruptible(signed long timeout);
-extern signed long schedule_timeout_killable(signed long timeout);
-extern signed long schedule_timeout_uninterruptible(signed long timeout);
-extern signed long schedule_timeout_idle(signed long timeout);
+extern long schedule_timeout(long timeout);
+extern long schedule_timeout_interruptible(long timeout);
+extern long schedule_timeout_killable(long timeout);
+extern long schedule_timeout_uninterruptible(long timeout);
+extern long schedule_timeout_idle(long timeout);
asmlinkage void schedule(void);
extern void schedule_preempt_disabled(void);
@@ -440,112 +185,6 @@ extern void io_schedule_finish(int token);
extern long io_schedule_timeout(long timeout);
extern void io_schedule(void);
-void __noreturn do_task_dead(void);
-
-struct nsproxy;
-struct user_namespace;
-
-#ifdef CONFIG_MMU
-extern void arch_pick_mmap_layout(struct mm_struct *mm);
-extern unsigned long
-arch_get_unmapped_area(struct file *, unsigned long, unsigned long,
- unsigned long, unsigned long);
-extern unsigned long
-arch_get_unmapped_area_topdown(struct file *filp, unsigned long addr,
- unsigned long len, unsigned long pgoff,
- unsigned long flags);
-#else
-static inline void arch_pick_mmap_layout(struct mm_struct *mm) {}
-#endif
-
-#define SUID_DUMP_DISABLE 0 /* No setuid dumping */
-#define SUID_DUMP_USER 1 /* Dump as user of process */
-#define SUID_DUMP_ROOT 2 /* Dump as root */
-
-/* mm flags */
-
-/* for SUID_DUMP_* above */
-#define MMF_DUMPABLE_BITS 2
-#define MMF_DUMPABLE_MASK ((1 << MMF_DUMPABLE_BITS) - 1)
-
-extern void set_dumpable(struct mm_struct *mm, int value);
-/*
- * This returns the actual value of the suid_dumpable flag. For things
- * that are using this for checking for privilege transitions, it must
- * test against SUID_DUMP_USER rather than treating it as a boolean
- * value.
- */
-static inline int __get_dumpable(unsigned long mm_flags)
-{
- return mm_flags & MMF_DUMPABLE_MASK;
-}
-
-static inline int get_dumpable(struct mm_struct *mm)
-{
- return __get_dumpable(mm->flags);
-}
-
-/* coredump filter bits */
-#define MMF_DUMP_ANON_PRIVATE 2
-#define MMF_DUMP_ANON_SHARED 3
-#define MMF_DUMP_MAPPED_PRIVATE 4
-#define MMF_DUMP_MAPPED_SHARED 5
-#define MMF_DUMP_ELF_HEADERS 6
-#define MMF_DUMP_HUGETLB_PRIVATE 7
-#define MMF_DUMP_HUGETLB_SHARED 8
-#define MMF_DUMP_DAX_PRIVATE 9
-#define MMF_DUMP_DAX_SHARED 10
-
-#define MMF_DUMP_FILTER_SHIFT MMF_DUMPABLE_BITS
-#define MMF_DUMP_FILTER_BITS 9
-#define MMF_DUMP_FILTER_MASK \
- (((1 << MMF_DUMP_FILTER_BITS) - 1) << MMF_DUMP_FILTER_SHIFT)
-#define MMF_DUMP_FILTER_DEFAULT \
- ((1 << MMF_DUMP_ANON_PRIVATE) | (1 << MMF_DUMP_ANON_SHARED) |\
- (1 << MMF_DUMP_HUGETLB_PRIVATE) | MMF_DUMP_MASK_DEFAULT_ELF)
-
-#ifdef CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS
-# define MMF_DUMP_MASK_DEFAULT_ELF (1 << MMF_DUMP_ELF_HEADERS)
-#else
-# define MMF_DUMP_MASK_DEFAULT_ELF 0
-#endif
- /* leave room for more dump flags */
-#define MMF_VM_MERGEABLE 16 /* KSM may merge identical pages */
-#define MMF_VM_HUGEPAGE 17 /* set when VM_HUGEPAGE is set on vma */
-/*
- * This one-shot flag is dropped due to necessity of changing exe once again
- * on NFS restore
- */
-//#define MMF_EXE_FILE_CHANGED 18 /* see prctl_set_mm_exe_file() */
-
-#define MMF_HAS_UPROBES 19 /* has uprobes */
-#define MMF_RECALC_UPROBES 20 /* MMF_HAS_UPROBES can be wrong */
-#define MMF_OOM_SKIP 21 /* mm is of no interest for the OOM killer */
-#define MMF_UNSTABLE 22 /* mm is unstable for copy_from_user */
-#define MMF_HUGE_ZERO_PAGE 23 /* mm has ever used the global huge zero page */
-
-#define MMF_INIT_MASK (MMF_DUMPABLE_MASK | MMF_DUMP_FILTER_MASK)
-
-struct sighand_struct {
- atomic_t count;
- struct k_sigaction action[_NSIG];
- spinlock_t siglock;
- wait_queue_head_t signalfd_wqh;
-};
-
-struct pacct_struct {
- int ac_flag;
- long ac_exitcode;
- unsigned long ac_mem;
- u64 ac_utime, ac_stime;
- unsigned long ac_minflt, ac_majflt;
-};
-
-struct cpu_itimer {
- u64 expires;
- u64 incr;
-};
-
/**
* struct prev_cputime - snaphsot of system and user cputime
* @utime: time spent in user mode
@@ -557,20 +196,12 @@ struct cpu_itimer {
*/
struct prev_cputime {
#ifndef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE
- u64 utime;
- u64 stime;
- raw_spinlock_t lock;
+ u64 utime;
+ u64 stime;
+ raw_spinlock_t lock;
#endif
};
-static inline void prev_cputime_init(struct prev_cputime *prev)
-{
-#ifndef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE
- prev->utime = prev->stime = 0;
- raw_spin_lock_init(&prev->lock);
-#endif
-}
-
/**
* struct task_cputime - collected CPU time counts
* @utime: time spent in user mode, in nanoseconds
@@ -582,376 +213,35 @@ static inline void prev_cputime_init(struct prev_cputime *prev)
* these counts together and treat all three of them in parallel.
*/
struct task_cputime {
- u64 utime;
- u64 stime;
- unsigned long long sum_exec_runtime;
+ u64 utime;
+ u64 stime;
+ unsigned long long sum_exec_runtime;
};
-/* Alternate field names when used to cache expirations. */
-#define virt_exp utime
-#define prof_exp stime
-#define sched_exp sum_exec_runtime
-
-/*
- * This is the atomic variant of task_cputime, which can be used for
- * storing and updating task_cputime statistics without locking.
- */
-struct task_cputime_atomic {
- atomic64_t utime;
- atomic64_t stime;
- atomic64_t sum_exec_runtime;
-};
-
-#define INIT_CPUTIME_ATOMIC \
- (struct task_cputime_atomic) { \
- .utime = ATOMIC64_INIT(0), \
- .stime = ATOMIC64_INIT(0), \
- .sum_exec_runtime = ATOMIC64_INIT(0), \
- }
-
-#define PREEMPT_DISABLED (PREEMPT_DISABLE_OFFSET + PREEMPT_ENABLED)
-
-/*
- * Disable preemption until the scheduler is running -- use an unconditional
- * value so that it also works on !PREEMPT_COUNT kernels.
- *
- * Reset by start_kernel()->sched_init()->init_idle()->init_idle_preempt_count().
- */
-#define INIT_PREEMPT_COUNT PREEMPT_OFFSET
-
-/*
- * Initial preempt_count value; reflects the preempt_count schedule invariant
- * which states that during context switches:
- *
- * preempt_count() == 2*PREEMPT_DISABLE_OFFSET
- *
- * Note: PREEMPT_DISABLE_OFFSET is 0 for !PREEMPT_COUNT kernels.
- * Note: See finish_task_switch().
- */
-#define FORK_PREEMPT_COUNT (2*PREEMPT_DISABLE_OFFSET + PREEMPT_ENABLED)
-
-/**
- * struct thread_group_cputimer - thread group interval timer counts
- * @cputime_atomic: atomic thread group interval timers.
- * @running: true when there are timers running and
- * @cputime_atomic receives updates.
- * @checking_timer: true when a thread in the group is in the
- * process of checking for thread group timers.
- *
- * This structure contains the version of task_cputime, above, that is
- * used for thread group CPU timer calculations.
- */
-struct thread_group_cputimer {
- struct task_cputime_atomic cputime_atomic;
- bool running;
- bool checking_timer;
-};
-
-#include <linux/rwsem.h>
-struct autogroup;
-
-/*
- * NOTE! "signal_struct" does not have its own
- * locking, because a shared signal_struct always
- * implies a shared sighand_struct, so locking
- * sighand_struct is always a proper superset of
- * the locking of signal_struct.
- */
-struct signal_struct {
- atomic_t sigcnt;
- atomic_t live;
- int nr_threads;
- struct list_head thread_head;
-
- wait_queue_head_t wait_chldexit; /* for wait4() */
-
- /* current thread group signal load-balancing target: */
- struct task_struct *curr_target;
-
- /* shared signal handling: */
- struct sigpending shared_pending;
-
- /* thread group exit support */
- int group_exit_code;
- /* overloaded:
- * - notify group_exit_task when ->count is equal to notify_count
- * - everyone except group_exit_task is stopped during signal delivery
- * of fatal signals, group_exit_task processes the signal.
- */
- int notify_count;
- struct task_struct *group_exit_task;
-
- /* thread group stop support, overloads group_exit_code too */
- int group_stop_count;
- unsigned int flags; /* see SIGNAL_* flags below */
-
- /*
- * PR_SET_CHILD_SUBREAPER marks a process, like a service
- * manager, to re-parent orphan (double-forking) child processes
- * to this process instead of 'init'. The service manager is
- * able to receive SIGCHLD signals and is able to investigate
- * the process until it calls wait(). All children of this
- * process will inherit a flag if they should look for a
- * child_subreaper process at exit.
- */
- unsigned int is_child_subreaper:1;
- unsigned int has_child_subreaper:1;
-
-#ifdef CONFIG_POSIX_TIMERS
-
- /* POSIX.1b Interval Timers */
- int posix_timer_id;
- struct list_head posix_timers;
-
- /* ITIMER_REAL timer for the process */
- struct hrtimer real_timer;
- ktime_t it_real_incr;
-
- /*
- * ITIMER_PROF and ITIMER_VIRTUAL timers for the process, we use
- * CPUCLOCK_PROF and CPUCLOCK_VIRT for indexing array as these
- * values are defined to 0 and 1 respectively
- */
- struct cpu_itimer it[2];
-
- /*
- * Thread group totals for process CPU timers.
- * See thread_group_cputimer(), et al, for details.
- */
- struct thread_group_cputimer cputimer;
-
- /* Earliest-expiration cache. */
- struct task_cputime cputime_expires;
-
- struct list_head cpu_timers[3];
-
-#endif
-
- struct pid *leader_pid;
-
-#ifdef CONFIG_NO_HZ_FULL
- atomic_t tick_dep_mask;
-#endif
-
- struct pid *tty_old_pgrp;
-
- /* boolean value for session group leader */
- int leader;
-
- struct tty_struct *tty; /* NULL if no tty */
-
-#ifdef CONFIG_SCHED_AUTOGROUP
- struct autogroup *autogroup;
-#endif
- /*
- * Cumulative resource counters for dead threads in the group,
- * and for reaped dead child processes forked by this group.
- * Live threads maintain their own counters and add to these
- * in __exit_signal, except for the group leader.
- */
- seqlock_t stats_lock;
- u64 utime, stime, cutime, cstime;
- u64 gtime;
- u64 cgtime;
- struct prev_cputime prev_cputime;
- unsigned long nvcsw, nivcsw, cnvcsw, cnivcsw;
- unsigned long min_flt, maj_flt, cmin_flt, cmaj_flt;
- unsigned long inblock, oublock, cinblock, coublock;
- unsigned long maxrss, cmaxrss;
- struct task_io_accounting ioac;
-
- /*
- * Cumulative ns of schedule CPU time fo dead threads in the
- * group, not including a zombie group leader, (This only differs
- * from jiffies_to_ns(utime + stime) if sched_clock uses something
- * other than jiffies.)
- */
- unsigned long long sum_sched_runtime;
-
- /*
- * We don't bother to synchronize most readers of this at all,
- * because there is no reader checking a limit that actually needs
- * to get both rlim_cur and rlim_max atomically, and either one
- * alone is a single word that can safely be read normally.
- * getrlimit/setrlimit use task_lock(current->group_leader) to
- * protect this instead of the siglock, because they really
- * have no need to disable irqs.
- */
- struct rlimit rlim[RLIM_NLIMITS];
-
-#ifdef CONFIG_BSD_PROCESS_ACCT
- struct pacct_struct pacct; /* per-process accounting information */
-#endif
-#ifdef CONFIG_TASKSTATS
- struct taskstats *stats;
-#endif
-#ifdef CONFIG_AUDIT
- unsigned audit_tty;
- struct tty_audit_buf *tty_audit_buf;
-#endif
-
- /*
- * Thread is the potential origin of an oom condition; kill first on
- * oom
- */
- bool oom_flag_origin;
- short oom_score_adj; /* OOM kill score adjustment */
- short oom_score_adj_min; /* OOM kill score adjustment min value.
- * Only settable by CAP_SYS_RESOURCE. */
- struct mm_struct *oom_mm; /* recorded mm when the thread group got
- * killed by the oom killer */
-
- struct mutex cred_guard_mutex; /* guard against foreign influences on
- * credential calculations
- * (notably. ptrace) */
-};
-
-/*
- * Bits in flags field of signal_struct.
- */
-#define SIGNAL_STOP_STOPPED 0x00000001 /* job control stop in effect */
-#define SIGNAL_STOP_CONTINUED 0x00000002 /* SIGCONT since WCONTINUED reap */
-#define SIGNAL_GROUP_EXIT 0x00000004 /* group exit in progress */
-#define SIGNAL_GROUP_COREDUMP 0x00000008 /* coredump in progress */
-/*
- * Pending notifications to parent.
- */
-#define SIGNAL_CLD_STOPPED 0x00000010
-#define SIGNAL_CLD_CONTINUED 0x00000020
-#define SIGNAL_CLD_MASK (SIGNAL_CLD_STOPPED|SIGNAL_CLD_CONTINUED)
-
-#define SIGNAL_UNKILLABLE 0x00000040 /* for init: ignore fatal signals */
-
-#define SIGNAL_STOP_MASK (SIGNAL_CLD_MASK | SIGNAL_STOP_STOPPED | \
- SIGNAL_STOP_CONTINUED)
-
-static inline void signal_set_stop_flags(struct signal_struct *sig,
- unsigned int flags)
-{
- WARN_ON(sig->flags & (SIGNAL_GROUP_EXIT|SIGNAL_GROUP_COREDUMP));
- sig->flags = (sig->flags & ~SIGNAL_STOP_MASK) | flags;
-}
-
-/* If true, all threads except ->group_exit_task have pending SIGKILL */
-static inline int signal_group_exit(const struct signal_struct *sig)
-{
- return (sig->flags & SIGNAL_GROUP_EXIT) ||
- (sig->group_exit_task != NULL);
-}
-
-/*
- * Some day this will be a full-fledged user tracking system..
- */
-struct user_struct {
- atomic_t __count; /* reference count */
- atomic_t processes; /* How many processes does this user have? */
- atomic_t sigpending; /* How many pending signals does this user have? */
-#ifdef CONFIG_FANOTIFY
- atomic_t fanotify_listeners;
-#endif
-#ifdef CONFIG_EPOLL
- atomic_long_t epoll_watches; /* The number of file descriptors currently watched */
-#endif
-#ifdef CONFIG_POSIX_MQUEUE
- /* protected by mq_lock */
- unsigned long mq_bytes; /* How many bytes can be allocated to mqueue? */
-#endif
- unsigned long locked_shm; /* How many pages of mlocked shm ? */
- unsigned long unix_inflight; /* How many files in flight in unix sockets */
- atomic_long_t pipe_bufs; /* how many pages are allocated in pipe buffers */
-
-#ifdef CONFIG_KEYS
- struct key *uid_keyring; /* UID specific keyring */
- struct key *session_keyring; /* UID's default session keyring */
-#endif
-
- /* Hash table maintenance information */
- struct hlist_node uidhash_node;
- kuid_t uid;
-
-#if defined(CONFIG_PERF_EVENTS) || defined(CONFIG_BPF_SYSCALL)
- atomic_long_t locked_vm;
-#endif
-};
-
-extern int uids_sysfs_init(void);
-
-extern struct user_struct *find_user(kuid_t);
-
-extern struct user_struct root_user;
-#define INIT_USER (&root_user)
-
-
-struct backing_dev_info;
-struct reclaim_state;
+/* Alternate field names when used on cache expirations: */
+#define virt_exp utime
+#define prof_exp stime
+#define sched_exp sum_exec_runtime
-#ifdef CONFIG_SCHED_INFO
struct sched_info {
- /* cumulative counters */
- unsigned long pcount; /* # of times run on this cpu */
- unsigned long long run_delay; /* time spent waiting on a runqueue */
+#ifdef CONFIG_SCHED_INFO
+ /* Cumulative counters: */
- /* timestamps */
- unsigned long long last_arrival,/* when we last ran on a cpu */
- last_queued; /* when we were last queued to run */
-};
-#endif /* CONFIG_SCHED_INFO */
+ /* # of times we have run on this CPU: */
+ unsigned long pcount;
-#ifdef CONFIG_TASK_DELAY_ACCT
-struct task_delay_info {
- spinlock_t lock;
- unsigned int flags; /* Private per-task flags */
+ /* Time spent waiting on a runqueue: */
+ unsigned long long run_delay;
- /* For each stat XXX, add following, aligned appropriately
- *
- * struct timespec XXX_start, XXX_end;
- * u64 XXX_delay;
- * u32 XXX_count;
- *
- * Atomicity of updates to XXX_delay, XXX_count protected by
- * single lock above (split into XXX_lock if contention is an issue).
- */
+ /* Timestamps: */
- /*
- * XXX_count is incremented on every XXX operation, the delay
- * associated with the operation is added to XXX_delay.
- * XXX_delay contains the accumulated delay time in nanoseconds.
- */
- u64 blkio_start; /* Shared by blkio, swapin */
- u64 blkio_delay; /* wait for sync block io completion */
- u64 swapin_delay; /* wait for swapin block io completion */
- u32 blkio_count; /* total count of the number of sync block */
- /* io operations performed */
- u32 swapin_count; /* total count of the number of swapin block */
- /* io operations performed */
-
- u64 freepages_start;
- u64 freepages_delay; /* wait for memory reclaim */
- u32 freepages_count; /* total count of memory reclaim */
-};
-#endif /* CONFIG_TASK_DELAY_ACCT */
+ /* When did we last run on a CPU? */
+ unsigned long long last_arrival;
-static inline int sched_info_on(void)
-{
-#ifdef CONFIG_SCHEDSTATS
- return 1;
-#elif defined(CONFIG_TASK_DELAY_ACCT)
- extern int delayacct_on;
- return delayacct_on;
-#else
- return 0;
-#endif
-}
-
-#ifdef CONFIG_SCHEDSTATS
-void force_schedstat_enabled(void);
-#endif
+ /* When were we last queued to run? */
+ unsigned long long last_queued;
-enum cpu_idle_type {
- CPU_IDLE,
- CPU_NOT_IDLE,
- CPU_NEWLY_IDLE,
- CPU_MAX_IDLE_TYPES
+#endif /* CONFIG_SCHED_INFO */
};
/*
@@ -961,290 +251,12 @@ enum cpu_idle_type {
* We define a basic fixed point arithmetic range, and then formalize
* all these metrics based on that basic range.
*/
-# define SCHED_FIXEDPOINT_SHIFT 10
-# define SCHED_FIXEDPOINT_SCALE (1L << SCHED_FIXEDPOINT_SHIFT)
-
-/*
- * Increase resolution of cpu_capacity calculations
- */
-#define SCHED_CAPACITY_SHIFT SCHED_FIXEDPOINT_SHIFT
-#define SCHED_CAPACITY_SCALE (1L << SCHED_CAPACITY_SHIFT)
-
-/*
- * Wake-queues are lists of tasks with a pending wakeup, whose
- * callers have already marked the task as woken internally,
- * and can thus carry on. A common use case is being able to
- * do the wakeups once the corresponding user lock as been
- * released.
- *
- * We hold reference to each task in the list across the wakeup,
- * thus guaranteeing that the memory is still valid by the time
- * the actual wakeups are performed in wake_up_q().
- *
- * One per task suffices, because there's never a need for a task to be
- * in two wake queues simultaneously; it is forbidden to abandon a task
- * in a wake queue (a call to wake_up_q() _must_ follow), so if a task is
- * already in a wake queue, the wakeup will happen soon and the second
- * waker can just skip it.
- *
- * The DEFINE_WAKE_Q macro declares and initializes the list head.
- * wake_up_q() does NOT reinitialize the list; it's expected to be
- * called near the end of a function. Otherwise, the list can be
- * re-initialized for later re-use by wake_q_init().
- *
- * Note that this can cause spurious wakeups. schedule() callers
- * must ensure the call is done inside a loop, confirming that the
- * wakeup condition has in fact occurred.
- */
-struct wake_q_node {
- struct wake_q_node *next;
-};
-
-struct wake_q_head {
- struct wake_q_node *first;
- struct wake_q_node **lastp;
-};
-
-#define WAKE_Q_TAIL ((struct wake_q_node *) 0x01)
-
-#define DEFINE_WAKE_Q(name) \
- struct wake_q_head name = { WAKE_Q_TAIL, &name.first }
-
-static inline void wake_q_init(struct wake_q_head *head)
-{
- head->first = WAKE_Q_TAIL;
- head->lastp = &head->first;
-}
-
-extern void wake_q_add(struct wake_q_head *head,
- struct task_struct *task);
-extern void wake_up_q(struct wake_q_head *head);
-
-/*
- * sched-domains (multiprocessor balancing) declarations:
- */
-#ifdef CONFIG_SMP
-#define SD_LOAD_BALANCE 0x0001 /* Do load balancing on this domain. */
-#define SD_BALANCE_NEWIDLE 0x0002 /* Balance when about to become idle */
-#define SD_BALANCE_EXEC 0x0004 /* Balance on exec */
-#define SD_BALANCE_FORK 0x0008 /* Balance on fork, clone */
-#define SD_BALANCE_WAKE 0x0010 /* Balance on wakeup */
-#define SD_WAKE_AFFINE 0x0020 /* Wake task to waking CPU */
-#define SD_ASYM_CPUCAPACITY 0x0040 /* Groups have different max cpu capacities */
-#define SD_SHARE_CPUCAPACITY 0x0080 /* Domain members share cpu capacity */
-#define SD_SHARE_POWERDOMAIN 0x0100 /* Domain members share power domain */
-#define SD_SHARE_PKG_RESOURCES 0x0200 /* Domain members share cpu pkg resources */
-#define SD_SERIALIZE 0x0400 /* Only a single load balancing instance */
-#define SD_ASYM_PACKING 0x0800 /* Place busy groups earlier in the domain */
-#define SD_PREFER_SIBLING 0x1000 /* Prefer to place tasks in a sibling domain */
-#define SD_OVERLAP 0x2000 /* sched_domains of this level overlap */
-#define SD_NUMA 0x4000 /* cross-node balancing */
-
-#ifdef CONFIG_SCHED_SMT
-static inline int cpu_smt_flags(void)
-{
- return SD_SHARE_CPUCAPACITY | SD_SHARE_PKG_RESOURCES;
-}
-#endif
-
-#ifdef CONFIG_SCHED_MC
-static inline int cpu_core_flags(void)
-{
- return SD_SHARE_PKG_RESOURCES;
-}
-#endif
-
-#ifdef CONFIG_NUMA
-static inline int cpu_numa_flags(void)
-{
- return SD_NUMA;
-}
-#endif
-
-extern int arch_asym_cpu_priority(int cpu);
-
-struct sched_domain_attr {
- int relax_domain_level;
-};
-
-#define SD_ATTR_INIT (struct sched_domain_attr) { \
- .relax_domain_level = -1, \
-}
-
-extern int sched_domain_level_max;
-
-struct sched_group;
-
-struct sched_domain_shared {
- atomic_t ref;
- atomic_t nr_busy_cpus;
- int has_idle_cores;
-};
-
-struct sched_domain {
- /* These fields must be setup */
- struct sched_domain *parent; /* top domain must be null terminated */
- struct sched_domain *child; /* bottom domain must be null terminated */
- struct sched_group *groups; /* the balancing groups of the domain */
- unsigned long min_interval; /* Minimum balance interval ms */
- unsigned long max_interval; /* Maximum balance interval ms */
- unsigned int busy_factor; /* less balancing by factor if busy */
- unsigned int imbalance_pct; /* No balance until over watermark */
- unsigned int cache_nice_tries; /* Leave cache hot tasks for # tries */
- unsigned int busy_idx;
- unsigned int idle_idx;
- unsigned int newidle_idx;
- unsigned int wake_idx;
- unsigned int forkexec_idx;
- unsigned int smt_gain;
-
- int nohz_idle; /* NOHZ IDLE status */
- int flags; /* See SD_* */
- int level;
-
- /* Runtime fields. */
- unsigned long last_balance; /* init to jiffies. units in jiffies */
- unsigned int balance_interval; /* initialise to 1. units in ms. */
- unsigned int nr_balance_failed; /* initialise to 0 */
-
- /* idle_balance() stats */
- u64 max_newidle_lb_cost;
- unsigned long next_decay_max_lb_cost;
-
- u64 avg_scan_cost; /* select_idle_sibling */
-
-#ifdef CONFIG_SCHEDSTATS
- /* load_balance() stats */
- unsigned int lb_count[CPU_MAX_IDLE_TYPES];
- unsigned int lb_failed[CPU_MAX_IDLE_TYPES];
- unsigned int lb_balanced[CPU_MAX_IDLE_TYPES];
- unsigned int lb_imbalance[CPU_MAX_IDLE_TYPES];
- unsigned int lb_gained[CPU_MAX_IDLE_TYPES];
- unsigned int lb_hot_gained[CPU_MAX_IDLE_TYPES];
- unsigned int lb_nobusyg[CPU_MAX_IDLE_TYPES];
- unsigned int lb_nobusyq[CPU_MAX_IDLE_TYPES];
-
- /* Active load balancing */
- unsigned int alb_count;
- unsigned int alb_failed;
- unsigned int alb_pushed;
-
- /* SD_BALANCE_EXEC stats */
- unsigned int sbe_count;
- unsigned int sbe_balanced;
- unsigned int sbe_pushed;
-
- /* SD_BALANCE_FORK stats */
- unsigned int sbf_count;
- unsigned int sbf_balanced;
- unsigned int sbf_pushed;
-
- /* try_to_wake_up() stats */
- unsigned int ttwu_wake_remote;
- unsigned int ttwu_move_affine;
- unsigned int ttwu_move_balance;
-#endif
-#ifdef CONFIG_SCHED_DEBUG
- char *name;
-#endif
- union {
- void *private; /* used during construction */
- struct rcu_head rcu; /* used during destruction */
- };
- struct sched_domain_shared *shared;
-
- unsigned int span_weight;
- /*
- * Span of all CPUs in this domain.
- *
- * NOTE: this field is variable length. (Allocated dynamically
- * by attaching extra space to the end of the structure,
- * depending on how many CPUs the kernel has booted up with)
- */
- unsigned long span[0];
-};
-
-static inline struct cpumask *sched_domain_span(struct sched_domain *sd)
-{
- return to_cpumask(sd->span);
-}
-
-extern void partition_sched_domains(int ndoms_new, cpumask_var_t doms_new[],
- struct sched_domain_attr *dattr_new);
-
-/* Allocate an array of sched domains, for partition_sched_domains(). */
-cpumask_var_t *alloc_sched_domains(unsigned int ndoms);
-void free_sched_domains(cpumask_var_t doms[], unsigned int ndoms);
-
-bool cpus_share_cache(int this_cpu, int that_cpu);
-
-typedef const struct cpumask *(*sched_domain_mask_f)(int cpu);
-typedef int (*sched_domain_flags_f)(void);
-
-#define SDTL_OVERLAP 0x01
-
-struct sd_data {
- struct sched_domain **__percpu sd;
- struct sched_domain_shared **__percpu sds;
- struct sched_group **__percpu sg;
- struct sched_group_capacity **__percpu sgc;
-};
-
-struct sched_domain_topology_level {
- sched_domain_mask_f mask;
- sched_domain_flags_f sd_flags;
- int flags;
- int numa_level;
- struct sd_data data;
-#ifdef CONFIG_SCHED_DEBUG
- char *name;
-#endif
-};
-
-extern void set_sched_topology(struct sched_domain_topology_level *tl);
-extern void wake_up_if_idle(int cpu);
-
-#ifdef CONFIG_SCHED_DEBUG
-# define SD_INIT_NAME(type) .name = #type
-#else
-# define SD_INIT_NAME(type)
-#endif
-
-#else /* CONFIG_SMP */
-
-struct sched_domain_attr;
-
-static inline void
-partition_sched_domains(int ndoms_new, cpumask_var_t doms_new[],
- struct sched_domain_attr *dattr_new)
-{
-}
-
-static inline bool cpus_share_cache(int this_cpu, int that_cpu)
-{
- return true;
-}
-
-#endif /* !CONFIG_SMP */
-
-
-struct io_context; /* See blkdev.h */
-
-
-#ifdef ARCH_HAS_PREFETCH_SWITCH_STACK
-extern void prefetch_stack(struct task_struct *t);
-#else
-static inline void prefetch_stack(struct task_struct *t) { }
-#endif
-
-struct audit_context; /* See audit.c */
-struct mempolicy;
-struct pipe_inode_info;
-struct uts_namespace;
+# define SCHED_FIXEDPOINT_SHIFT 10
+# define SCHED_FIXEDPOINT_SCALE (1L << SCHED_FIXEDPOINT_SHIFT)
struct load_weight {
- unsigned long weight;
- u32 inv_weight;
+ unsigned long weight;
+ u32 inv_weight;
};
/*
@@ -1300,71 +312,73 @@ struct load_weight {
* issues.
*/
struct sched_avg {
- u64 last_update_time, load_sum;
- u32 util_sum, period_contrib;
- unsigned long load_avg, util_avg;
+ u64 last_update_time;
+ u64 load_sum;
+ u32 util_sum;
+ u32 period_contrib;
+ unsigned long load_avg;
+ unsigned long util_avg;
};
-#ifdef CONFIG_SCHEDSTATS
struct sched_statistics {
- u64 wait_start;
- u64 wait_max;
- u64 wait_count;
- u64 wait_sum;
- u64 iowait_count;
- u64 iowait_sum;
-
- u64 sleep_start;
- u64 sleep_max;
- s64 sum_sleep_runtime;
-
- u64 block_start;
- u64 block_max;
- u64 exec_max;
- u64 slice_max;
-
- u64 nr_migrations_cold;
- u64 nr_failed_migrations_affine;
- u64 nr_failed_migrations_running;
- u64 nr_failed_migrations_hot;
- u64 nr_forced_migrations;
-
- u64 nr_wakeups;
- u64 nr_wakeups_sync;
- u64 nr_wakeups_migrate;
- u64 nr_wakeups_local;
- u64 nr_wakeups_remote;
- u64 nr_wakeups_affine;
- u64 nr_wakeups_affine_attempts;
- u64 nr_wakeups_passive;
- u64 nr_wakeups_idle;
-};
+#ifdef CONFIG_SCHEDSTATS
+ u64 wait_start;
+ u64 wait_max;
+ u64 wait_count;
+ u64 wait_sum;
+ u64 iowait_count;
+ u64 iowait_sum;
+
+ u64 sleep_start;
+ u64 sleep_max;
+ s64 sum_sleep_runtime;
+
+ u64 block_start;
+ u64 block_max;
+ u64 exec_max;
+ u64 slice_max;
+
+ u64 nr_migrations_cold;
+ u64 nr_failed_migrations_affine;
+ u64 nr_failed_migrations_running;
+ u64 nr_failed_migrations_hot;
+ u64 nr_forced_migrations;
+
+ u64 nr_wakeups;
+ u64 nr_wakeups_sync;
+ u64 nr_wakeups_migrate;
+ u64 nr_wakeups_local;
+ u64 nr_wakeups_remote;
+ u64 nr_wakeups_affine;
+ u64 nr_wakeups_affine_attempts;
+ u64 nr_wakeups_passive;
+ u64 nr_wakeups_idle;
#endif
+};
struct sched_entity {
- struct load_weight load; /* for load-balancing */
- struct rb_node run_node;
- struct list_head group_node;
- unsigned int on_rq;
+ /* For load-balancing: */
+ struct load_weight load;
+ struct rb_node run_node;
+ struct list_head group_node;
+ unsigned int on_rq;
- u64 exec_start;
- u64 sum_exec_runtime;
- u64 vruntime;
- u64 prev_sum_exec_runtime;
+ u64 exec_start;
+ u64 sum_exec_runtime;
+ u64 vruntime;
+ u64 prev_sum_exec_runtime;
- u64 nr_migrations;
+ u64 nr_migrations;
-#ifdef CONFIG_SCHEDSTATS
- struct sched_statistics statistics;
-#endif
+ struct sched_statistics statistics;
#ifdef CONFIG_FAIR_GROUP_SCHED
- int depth;
- struct sched_entity *parent;
+ int depth;
+ struct sched_entity *parent;
/* rq on which this entity is (to be) queued: */
- struct cfs_rq *cfs_rq;
+ struct cfs_rq *cfs_rq;
/* rq "owned" by this entity/group: */
- struct cfs_rq *my_q;
+ struct cfs_rq *my_q;
#endif
#ifdef CONFIG_SMP
@@ -1374,49 +388,49 @@ struct sched_entity {
* Put into separate cache line so it does not
* collide with read-mostly values above.
*/
- struct sched_avg avg ____cacheline_aligned_in_smp;
+ struct sched_avg avg ____cacheline_aligned_in_smp;
#endif
};
struct sched_rt_entity {
- struct list_head run_list;
- unsigned long timeout;
- unsigned long watchdog_stamp;
- unsigned int time_slice;
- unsigned short on_rq;
- unsigned short on_list;
-
- struct sched_rt_entity *back;
+ struct list_head run_list;
+ unsigned long timeout;
+ unsigned long watchdog_stamp;
+ unsigned int time_slice;
+ unsigned short on_rq;
+ unsigned short on_list;
+
+ struct sched_rt_entity *back;
#ifdef CONFIG_RT_GROUP_SCHED
- struct sched_rt_entity *parent;
+ struct sched_rt_entity *parent;
/* rq on which this entity is (to be) queued: */
- struct rt_rq *rt_rq;
+ struct rt_rq *rt_rq;
/* rq "owned" by this entity/group: */
- struct rt_rq *my_q;
+ struct rt_rq *my_q;
#endif
};
struct sched_dl_entity {
- struct rb_node rb_node;
+ struct rb_node rb_node;
/*
* Original scheduling parameters. Copied here from sched_attr
* during sched_setattr(), they will remain the same until
* the next sched_setattr().
*/
- u64 dl_runtime; /* maximum runtime for each instance */
- u64 dl_deadline; /* relative deadline of each instance */
- u64 dl_period; /* separation of two instances (period) */
- u64 dl_bw; /* dl_runtime / dl_deadline */
+ u64 dl_runtime; /* Maximum runtime for each instance */
+ u64 dl_deadline; /* Relative deadline of each instance */
+ u64 dl_period; /* Separation of two instances (period) */
+ u64 dl_bw; /* dl_runtime / dl_deadline */
/*
* Actual scheduling parameters. Initialized with the values above,
* they are continously updated during task execution. Note that
* the remaining runtime could be < 0 in case we are in overrun.
*/
- s64 runtime; /* remaining runtime for this instance */
- u64 deadline; /* absolute deadline for this instance */
- unsigned int flags; /* specifying the scheduler behaviour */
+ s64 runtime; /* Remaining runtime for this instance */
+ u64 deadline; /* Absolute deadline for this instance */
+ unsigned int flags; /* Specifying the scheduler behaviour */
/*
* Some bool flags:
@@ -1429,28 +443,31 @@ struct sched_dl_entity {
* outside bandwidth enforcement mechanism (but only until we
* exit the critical section);
*
- * @dl_yielded tells if task gave up the cpu before consuming
+ * @dl_yielded tells if task gave up the CPU before consuming
* all its available runtime during the last job.
*/
- int dl_throttled, dl_boosted, dl_yielded;
+ int dl_throttled;
+ int dl_boosted;
+ int dl_yielded;
/*
* Bandwidth enforcement timer. Each -deadline task has its
* own bandwidth to be enforced, thus we need one timer per task.
*/
- struct hrtimer dl_timer;
+ struct hrtimer dl_timer;
};
union rcu_special {
struct {
- u8 blocked;
- u8 need_qs;
- u8 exp_need_qs;
- u8 pad; /* Otherwise the compiler can store garbage here. */
+ u8 blocked;
+ u8 need_qs;
+ u8 exp_need_qs;
+
+ /* Otherwise the compiler can store garbage here: */
+ u8 pad;
} b; /* Bits. */
u32 s; /* Set of bits. */
};
-struct rcu_node;
enum perf_event_task_context {
perf_invalid_context = -1,
@@ -1459,23 +476,8 @@ enum perf_event_task_context {
perf_nr_task_contexts,
};
-/* Track pages that require TLB flushes */
-struct tlbflush_unmap_batch {
- /*
- * Each bit set is a CPU that potentially has a TLB entry for one of
- * the PFNs being flushed. See set_tlb_ubc_flush_pending().
- */
- struct cpumask cpumask;
-
- /* True if any bit in cpumask is set */
- bool flush_required;
-
- /*
- * If true then the PTE was dirty when unmapped. The entry must be
- * flushed before IO is initiated or a stale TLB entry potentially
- * allows an update without redirtying the page.
- */
- bool writable;
+struct wake_q_node {
+ struct wake_q_node *next;
};
struct task_struct {
@@ -1484,362 +486,417 @@ struct task_struct {
* For reasons of header soup (see current_thread_info()), this
* must be the first element of task_struct.
*/
- struct thread_info thread_info;
+ struct thread_info thread_info;
#endif
- volatile long state; /* -1 unrunnable, 0 runnable, >0 stopped */
- void *stack;
- atomic_t usage;
- unsigned int flags; /* per process flags, defined below */
- unsigned int ptrace;
+ /* -1 unrunnable, 0 runnable, >0 stopped: */
+ volatile long state;
+ void *stack;
+ atomic_t usage;
+ /* Per task flags (PF_*), defined further below: */
+ unsigned int flags;
+ unsigned int ptrace;
#ifdef CONFIG_SMP
- struct llist_node wake_entry;
- int on_cpu;
+ struct llist_node wake_entry;
+ int on_cpu;
#ifdef CONFIG_THREAD_INFO_IN_TASK
- unsigned int cpu; /* current CPU */
+ /* Current CPU: */
+ unsigned int cpu;
#endif
- unsigned int wakee_flips;
- unsigned long wakee_flip_decay_ts;
- struct task_struct *last_wakee;
+ unsigned int wakee_flips;
+ unsigned long wakee_flip_decay_ts;
+ struct task_struct *last_wakee;
- int wake_cpu;
+ int wake_cpu;
#endif
- int on_rq;
+ int on_rq;
- int prio, static_prio, normal_prio;
- unsigned int rt_priority;
- const struct sched_class *sched_class;
- struct sched_entity se;
- struct sched_rt_entity rt;
+ int prio;
+ int static_prio;
+ int normal_prio;
+ unsigned int rt_priority;
+
+ const struct sched_class *sched_class;
+ struct sched_entity se;
+ struct sched_rt_entity rt;
#ifdef CONFIG_CGROUP_SCHED
- struct task_group *sched_task_group;
+ struct task_group *sched_task_group;
#endif
- struct sched_dl_entity dl;
+ struct sched_dl_entity dl;
#ifdef CONFIG_PREEMPT_NOTIFIERS
- /* list of struct preempt_notifier: */
- struct hlist_head preempt_notifiers;
+ /* List of struct preempt_notifier: */
+ struct hlist_head preempt_notifiers;
#endif
#ifdef CONFIG_BLK_DEV_IO_TRACE
- unsigned int btrace_seq;
+ unsigned int btrace_seq;
#endif
- unsigned int policy;
- int nr_cpus_allowed;
- cpumask_t cpus_allowed;
+ unsigned int policy;
+ int nr_cpus_allowed;
+ cpumask_t cpus_allowed;
#ifdef CONFIG_PREEMPT_RCU
- int rcu_read_lock_nesting;
- union rcu_special rcu_read_unlock_special;
- struct list_head rcu_node_entry;
- struct rcu_node *rcu_blocked_node;
+ int rcu_read_lock_nesting;
+ union rcu_special rcu_read_unlock_special;
+ struct list_head rcu_node_entry;
+ struct rcu_node *rcu_blocked_node;
#endif /* #ifdef CONFIG_PREEMPT_RCU */
+
#ifdef CONFIG_TASKS_RCU
- unsigned long rcu_tasks_nvcsw;
- bool rcu_tasks_holdout;
- struct list_head rcu_tasks_holdout_list;
- int rcu_tasks_idle_cpu;
+ unsigned long rcu_tasks_nvcsw;
+ bool rcu_tasks_holdout;
+ struct list_head rcu_tasks_holdout_list;
+ int rcu_tasks_idle_cpu;
#endif /* #ifdef CONFIG_TASKS_RCU */
-#ifdef CONFIG_SCHED_INFO
- struct sched_info sched_info;
-#endif
+ struct sched_info sched_info;
- struct list_head tasks;
+ struct list_head tasks;
#ifdef CONFIG_SMP
- struct plist_node pushable_tasks;
- struct rb_node pushable_dl_tasks;
-#endif
-
- struct mm_struct *mm, *active_mm;
- /* per-thread vma caching */
- u32 vmacache_seqnum;
- struct vm_area_struct *vmacache[VMACACHE_SIZE];
-#if defined(SPLIT_RSS_COUNTING)
- struct task_rss_stat rss_stat;
-#endif
-/* task state */
- int exit_state;
- int exit_code, exit_signal;
- int pdeath_signal; /* The signal sent when the parent dies */
- unsigned long jobctl; /* JOBCTL_*, siglock protected */
-
- /* Used for emulating ABI behavior of previous Linux versions */
- unsigned int personality;
-
- /* scheduler bits, serialized by scheduler locks */
- unsigned sched_reset_on_fork:1;
- unsigned sched_contributes_to_load:1;
- unsigned sched_migrated:1;
- unsigned sched_remote_wakeup:1;
- unsigned :0; /* force alignment to the next boundary */
-
- /* unserialized, strictly 'current' */
- unsigned in_execve:1; /* bit to tell LSMs we're in execve */
- unsigned in_iowait:1;
-#if !defined(TIF_RESTORE_SIGMASK)
- unsigned restore_sigmask:1;
+ struct plist_node pushable_tasks;
+ struct rb_node pushable_dl_tasks;
+#endif
+
+ struct mm_struct *mm;
+ struct mm_struct *active_mm;
+
+ /* Per-thread vma caching: */
+ struct vmacache vmacache;
+
+#ifdef SPLIT_RSS_COUNTING
+ struct task_rss_stat rss_stat;
+#endif
+ int exit_state;
+ int exit_code;
+ int exit_signal;
+ /* The signal sent when the parent dies: */
+ int pdeath_signal;
+ /* JOBCTL_*, siglock protected: */
+ unsigned long jobctl;
+
+ /* Used for emulating ABI behavior of previous Linux versions: */
+ unsigned int personality;
+
+ /* Scheduler bits, serialized by scheduler locks: */
+ unsigned sched_reset_on_fork:1;
+ unsigned sched_contributes_to_load:1;
+ unsigned sched_migrated:1;
+ unsigned sched_remote_wakeup:1;
+ /* Force alignment to the next boundary: */
+ unsigned :0;
+
+ /* Unserialized, strictly 'current' */
+
+ /* Bit to tell LSMs we're in execve(): */
+ unsigned in_execve:1;
+ unsigned in_iowait:1;
+#ifndef TIF_RESTORE_SIGMASK
+ unsigned restore_sigmask:1;
#endif
#ifdef CONFIG_MEMCG
- unsigned memcg_may_oom:1;
+ unsigned memcg_may_oom:1;
#ifndef CONFIG_SLOB
- unsigned memcg_kmem_skip_account:1;
+ unsigned memcg_kmem_skip_account:1;
#endif
#endif
#ifdef CONFIG_COMPAT_BRK
- unsigned brk_randomized:1;
+ unsigned brk_randomized:1;
#endif
- unsigned long atomic_flags; /* Flags needing atomic access. */
+ unsigned long atomic_flags; /* Flags requiring atomic access. */
- struct restart_block restart_block;
+ struct restart_block restart_block;
- pid_t pid;
- pid_t tgid;
+ pid_t pid;
+ pid_t tgid;
#ifdef CONFIG_CC_STACKPROTECTOR
- /* Canary value for the -fstack-protector gcc feature */
- unsigned long stack_canary;
+ /* Canary value for the -fstack-protector GCC feature: */
+ unsigned long stack_canary;
#endif
/*
- * pointers to (original) parent process, youngest child, younger sibling,
+ * Pointers to the (original) parent process, youngest child, younger sibling,
* older sibling, respectively. (p->father can be replaced with
* p->real_parent->pid)
*/
- struct task_struct __rcu *real_parent; /* real parent process */
- struct task_struct __rcu *parent; /* recipient of SIGCHLD, wait4() reports */
+
+ /* Real parent process: */
+ struct task_struct __rcu *real_parent;
+
+ /* Recipient of SIGCHLD, wait4() reports: */
+ struct task_struct __rcu *parent;
+
/*
- * children/sibling forms the list of my natural children
+ * Children/sibling form the list of natural children:
*/
- struct list_head children; /* list of my children */
- struct list_head sibling; /* linkage in my parent's children list */
- struct task_struct *group_leader; /* threadgroup leader */
+ struct list_head children;
+ struct list_head sibling;
+ struct task_struct *group_leader;
/*
- * ptraced is the list of tasks this task is using ptrace on.
+ * 'ptraced' is the list of tasks this task is using ptrace() on.
+ *
* This includes both natural children and PTRACE_ATTACH targets.
- * p->ptrace_entry is p's link on the p->parent->ptraced list.
+ * 'ptrace_entry' is this task's link on the p->parent->ptraced list.
*/
- struct list_head ptraced;
- struct list_head ptrace_entry;
+ struct list_head ptraced;
+ struct list_head ptrace_entry;
/* PID/PID hash table linkage. */
- struct pid_link pids[PIDTYPE_MAX];
- struct list_head thread_group;
- struct list_head thread_node;
+ struct pid_link pids[PIDTYPE_MAX];
+ struct list_head thread_group;
+ struct list_head thread_node;
+
+ struct completion *vfork_done;
+
+ /* CLONE_CHILD_SETTID: */
+ int __user *set_child_tid;
- struct completion *vfork_done; /* for vfork() */
- int __user *set_child_tid; /* CLONE_CHILD_SETTID */
- int __user *clear_child_tid; /* CLONE_CHILD_CLEARTID */
+ /* CLONE_CHILD_CLEARTID: */
+ int __user *clear_child_tid;
- u64 utime, stime;
+ u64 utime;
+ u64 stime;
#ifdef CONFIG_ARCH_HAS_SCALED_CPUTIME
- u64 utimescaled, stimescaled;
+ u64 utimescaled;
+ u64 stimescaled;
#endif
- u64 gtime;
- struct prev_cputime prev_cputime;
+ u64 gtime;
+ struct prev_cputime prev_cputime;
#ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN
- seqcount_t vtime_seqcount;
- unsigned long long vtime_snap;
+ seqcount_t vtime_seqcount;
+ unsigned long long vtime_snap;
enum {
- /* Task is sleeping or running in a CPU with VTIME inactive */
+ /* Task is sleeping or running in a CPU with VTIME inactive: */
VTIME_INACTIVE = 0,
- /* Task runs in userspace in a CPU with VTIME active */
+ /* Task runs in userspace in a CPU with VTIME active: */
VTIME_USER,
- /* Task runs in kernelspace in a CPU with VTIME active */
+ /* Task runs in kernelspace in a CPU with VTIME active: */
VTIME_SYS,
} vtime_snap_whence;
#endif
#ifdef CONFIG_NO_HZ_FULL
- atomic_t tick_dep_mask;
+ atomic_t tick_dep_mask;
#endif
- unsigned long nvcsw, nivcsw; /* context switch counts */
- u64 start_time; /* monotonic time in nsec */
- u64 real_start_time; /* boot based time in nsec */
-/* mm fault and swap info: this can arguably be seen as either mm-specific or thread-specific */
- unsigned long min_flt, maj_flt;
+ /* Context switch counts: */
+ unsigned long nvcsw;
+ unsigned long nivcsw;
+
+ /* Monotonic time in nsecs: */
+ u64 start_time;
+
+ /* Boot based time in nsecs: */
+ u64 real_start_time;
+
+ /* MM fault and swap info: this can arguably be seen as either mm-specific or thread-specific: */
+ unsigned long min_flt;
+ unsigned long maj_flt;
#ifdef CONFIG_POSIX_TIMERS
- struct task_cputime cputime_expires;
- struct list_head cpu_timers[3];
-#endif
-
-/* process credentials */
- const struct cred __rcu *ptracer_cred; /* Tracer's credentials at attach */
- const struct cred __rcu *real_cred; /* objective and real subjective task
- * credentials (COW) */
- const struct cred __rcu *cred; /* effective (overridable) subjective task
- * credentials (COW) */
- char comm[TASK_COMM_LEN]; /* executable name excluding path
- - access with [gs]et_task_comm (which lock
- it with task_lock())
- - initialized normally by setup_new_exec */
-/* file system info */
- struct nameidata *nameidata;
+ struct task_cputime cputime_expires;
+ struct list_head cpu_timers[3];
+#endif
+
+ /* Process credentials: */
+
+ /* Tracer's credentials at attach: */
+ const struct cred __rcu *ptracer_cred;
+
+ /* Objective and real subjective task credentials (COW): */
+ const struct cred __rcu *real_cred;
+
+ /* Effective (overridable) subjective task credentials (COW): */
+ const struct cred __rcu *cred;
+
+ /*
+ * executable name, excluding path.
+ *
+ * - normally initialized setup_new_exec()
+ * - access it with [gs]et_task_comm()
+ * - lock it with task_lock()
+ */
+ char comm[TASK_COMM_LEN];
+
+ struct nameidata *nameidata;
+
#ifdef CONFIG_SYSVIPC
-/* ipc stuff */
- struct sysv_sem sysvsem;
- struct sysv_shm sysvshm;
+ struct sysv_sem sysvsem;
+ struct sysv_shm sysvshm;
#endif
#ifdef CONFIG_DETECT_HUNG_TASK
-/* hung task detection */
- unsigned long last_switch_count;
-#endif
-/* filesystem information */
- struct fs_struct *fs;
-/* open file information */
- struct files_struct *files;
-/* namespaces */
- struct nsproxy *nsproxy;
-/* signal handlers */
- struct signal_struct *signal;
- struct sighand_struct *sighand;
-
- sigset_t blocked, real_blocked;
- sigset_t saved_sigmask; /* restored if set_restore_sigmask() was used */
- struct sigpending pending;
-
- unsigned long sas_ss_sp;
- size_t sas_ss_size;
- unsigned sas_ss_flags;
-
- struct callback_head *task_works;
-
- struct audit_context *audit_context;
+ unsigned long last_switch_count;
+#endif
+ /* Filesystem information: */
+ struct fs_struct *fs;
+
+ /* Open file information: */
+ struct files_struct *files;
+
+ /* Namespaces: */
+ struct nsproxy *nsproxy;
+
+ /* Signal handlers: */
+ struct signal_struct *signal;
+ struct sighand_struct *sighand;
+ sigset_t blocked;
+ sigset_t real_blocked;
+ /* Restored if set_restore_sigmask() was used: */
+ sigset_t saved_sigmask;
+ struct sigpending pending;
+ unsigned long sas_ss_sp;
+ size_t sas_ss_size;
+ unsigned int sas_ss_flags;
+
+ struct callback_head *task_works;
+
+ struct audit_context *audit_context;
#ifdef CONFIG_AUDITSYSCALL
- kuid_t loginuid;
- unsigned int sessionid;
+ kuid_t loginuid;
+ unsigned int sessionid;
#endif
- struct seccomp seccomp;
+ struct seccomp seccomp;
-/* Thread group tracking */
- u32 parent_exec_id;
- u32 self_exec_id;
-/* Protection of (de-)allocation: mm, files, fs, tty, keyrings, mems_allowed,
- * mempolicy */
- spinlock_t alloc_lock;
+ /* Thread group tracking: */
+ u32 parent_exec_id;
+ u32 self_exec_id;
+
+ /* Protection against (de-)allocation: mm, files, fs, tty, keyrings, mems_allowed, mempolicy: */
+ spinlock_t alloc_lock;
/* Protection of the PI data structures: */
- raw_spinlock_t pi_lock;
+ raw_spinlock_t pi_lock;
- struct wake_q_node wake_q;
+ struct wake_q_node wake_q;
#ifdef CONFIG_RT_MUTEXES
- /* PI waiters blocked on a rt_mutex held by this task */
- struct rb_root pi_waiters;
- struct rb_node *pi_waiters_leftmost;
- /* Deadlock detection and priority inheritance handling */
- struct rt_mutex_waiter *pi_blocked_on;
+ /* PI waiters blocked on a rt_mutex held by this task: */
+ struct rb_root pi_waiters;
+ struct rb_node *pi_waiters_leftmost;
+ /* Deadlock detection and priority inheritance handling: */
+ struct rt_mutex_waiter *pi_blocked_on;
#endif
#ifdef CONFIG_DEBUG_MUTEXES
- /* mutex deadlock detection */
- struct mutex_waiter *blocked_on;
+ /* Mutex deadlock detection: */
+ struct mutex_waiter *blocked_on;
#endif
+
#ifdef CONFIG_TRACE_IRQFLAGS
- unsigned int irq_events;
- unsigned long hardirq_enable_ip;
- unsigned long hardirq_disable_ip;
- unsigned int hardirq_enable_event;
- unsigned int hardirq_disable_event;
- int hardirqs_enabled;
- int hardirq_context;
- unsigned long softirq_disable_ip;
- unsigned long softirq_enable_ip;
- unsigned int softirq_disable_event;
- unsigned int softirq_enable_event;
- int softirqs_enabled;
- int softirq_context;
+ unsigned int irq_events;
+ unsigned long hardirq_enable_ip;
+ unsigned long hardirq_disable_ip;
+ unsigned int hardirq_enable_event;
+ unsigned int hardirq_disable_event;
+ int hardirqs_enabled;
+ int hardirq_context;
+ unsigned long softirq_disable_ip;
+ unsigned long softirq_enable_ip;
+ unsigned int softirq_disable_event;
+ unsigned int softirq_enable_event;
+ int softirqs_enabled;
+ int softirq_context;
#endif
+
#ifdef CONFIG_LOCKDEP
-# define MAX_LOCK_DEPTH 48UL
- u64 curr_chain_key;
- int lockdep_depth;
- unsigned int lockdep_recursion;
- struct held_lock held_locks[MAX_LOCK_DEPTH];
- gfp_t lockdep_reclaim_gfp;
+# define MAX_LOCK_DEPTH 48UL
+ u64 curr_chain_key;
+ int lockdep_depth;
+ unsigned int lockdep_recursion;
+ struct held_lock held_locks[MAX_LOCK_DEPTH];
+ gfp_t lockdep_reclaim_gfp;
#endif
+
#ifdef CONFIG_UBSAN
- unsigned int in_ubsan;
+ unsigned int in_ubsan;
#endif
-/* journalling filesystem info */
- void *journal_info;
+ /* Journalling filesystem info: */
+ void *journal_info;
-/* stacked block device info */
- struct bio_list *bio_list;
+ /* Stacked block device info: */
+ struct bio_list *bio_list;
#ifdef CONFIG_BLOCK
-/* stack plugging */
- struct blk_plug *plug;
+ /* Stack plugging: */
+ struct blk_plug *plug;
#endif
-/* VM state */
- struct reclaim_state *reclaim_state;
+ /* VM state: */
+ struct reclaim_state *reclaim_state;
- struct backing_dev_info *backing_dev_info;
+ struct backing_dev_info *backing_dev_info;
- struct io_context *io_context;
+ struct io_context *io_context;
- unsigned long ptrace_message;
- siginfo_t *last_siginfo; /* For ptrace use. */
- struct task_io_accounting ioac;
-#if defined(CONFIG_TASK_XACCT)
- u64 acct_rss_mem1; /* accumulated rss usage */
- u64 acct_vm_mem1; /* accumulated virtual memory usage */
- u64 acct_timexpd; /* stime + utime since last update */
+ /* Ptrace state: */
+ unsigned long ptrace_message;
+ siginfo_t *last_siginfo;
+
+ struct task_io_accounting ioac;
+#ifdef CONFIG_TASK_XACCT
+ /* Accumulated RSS usage: */
+ u64 acct_rss_mem1;
+ /* Accumulated virtual memory usage: */
+ u64 acct_vm_mem1;
+ /* stime + utime since last update: */
+ u64 acct_timexpd;
#endif
#ifdef CONFIG_CPUSETS
- nodemask_t mems_allowed; /* Protected by alloc_lock */
- seqcount_t mems_allowed_seq; /* Seqence no to catch updates */
- int cpuset_mem_spread_rotor;
- int cpuset_slab_spread_rotor;
+ /* Protected by ->alloc_lock: */
+ nodemask_t mems_allowed;
+ /* Seqence number to catch updates: */
+ seqcount_t mems_allowed_seq;
+ int cpuset_mem_spread_rotor;
+ int cpuset_slab_spread_rotor;
#endif
#ifdef CONFIG_CGROUPS
- /* Control Group info protected by css_set_lock */
- struct css_set __rcu *cgroups;
- /* cg_list protected by css_set_lock and tsk->alloc_lock */
- struct list_head cg_list;
+ /* Control Group info protected by css_set_lock: */
+ struct css_set __rcu *cgroups;
+ /* cg_list protected by css_set_lock and tsk->alloc_lock: */
+ struct list_head cg_list;
#endif
#ifdef CONFIG_INTEL_RDT_A
- int closid;
+ int closid;
#endif
#ifdef CONFIG_FUTEX
- struct robust_list_head __user *robust_list;
+ struct robust_list_head __user *robust_list;
#ifdef CONFIG_COMPAT
struct compat_robust_list_head __user *compat_robust_list;
#endif
- struct list_head pi_state_list;
- struct futex_pi_state *pi_state_cache;
+ struct list_head pi_state_list;
+ struct futex_pi_state *pi_state_cache;
#endif
#ifdef CONFIG_PERF_EVENTS
- struct perf_event_context *perf_event_ctxp[perf_nr_task_contexts];
- struct mutex perf_event_mutex;
- struct list_head perf_event_list;
+ struct perf_event_context *perf_event_ctxp[perf_nr_task_contexts];
+ struct mutex perf_event_mutex;
+ struct list_head perf_event_list;
#endif
#ifdef CONFIG_DEBUG_PREEMPT
- unsigned long preempt_disable_ip;
+ unsigned long preempt_disable_ip;
#endif
#ifdef CONFIG_NUMA
- struct mempolicy *mempolicy; /* Protected by alloc_lock */
- short il_next;
- short pref_node_fork;
+ /* Protected by alloc_lock: */
+ struct mempolicy *mempolicy;
+ short il_next;
+ short pref_node_fork;
#endif
#ifdef CONFIG_NUMA_BALANCING
- int numa_scan_seq;
- unsigned int numa_scan_period;
- unsigned int numa_scan_period_max;
- int numa_preferred_nid;
- unsigned long numa_migrate_retry;
- u64 node_stamp; /* migration stamp */
- u64 last_task_numa_placement;
- u64 last_sum_exec_runtime;
- struct callback_head numa_work;
-
- struct list_head numa_entry;
- struct numa_group *numa_group;
+ int numa_scan_seq;
+ unsigned int numa_scan_period;
+ unsigned int numa_scan_period_max;
+ int numa_preferred_nid;
+ unsigned long numa_migrate_retry;
+ /* Migration stamp: */
+ u64 node_stamp;
+ u64 last_task_numa_placement;
+ u64 last_sum_exec_runtime;
+ struct callback_head numa_work;
+
+ struct list_head numa_entry;
+ struct numa_group *numa_group;
/*
* numa_faults is an array split into four regions:
@@ -1855,8 +912,8 @@ struct task_struct {
* during the current scan window. When the scan completes, the counts
* in faults_memory and faults_cpu decay and these values are copied.
*/
- unsigned long *numa_faults;
- unsigned long total_numa_faults;
+ unsigned long *numa_faults;
+ unsigned long total_numa_faults;
/*
* numa_faults_locality tracks if faults recorded during the last
@@ -1864,208 +921,133 @@ struct task_struct {
* period is adapted based on the locality of the faults with different
* weights depending on whether they were shared or private faults
*/
- unsigned long numa_faults_locality[3];
+ unsigned long numa_faults_locality[3];
- unsigned long numa_pages_migrated;
+ unsigned long numa_pages_migrated;
#endif /* CONFIG_NUMA_BALANCING */
-#ifdef CONFIG_ARCH_WANT_BATCHED_UNMAP_TLB_FLUSH
- struct tlbflush_unmap_batch tlb_ubc;
-#endif
+ struct tlbflush_unmap_batch tlb_ubc;
- struct rcu_head rcu;
+ struct rcu_head rcu;
- /*
- * cache last used pipe for splice
- */
- struct pipe_inode_info *splice_pipe;
+ /* Cache last used pipe for splice(): */
+ struct pipe_inode_info *splice_pipe;
- struct page_frag task_frag;
+ struct page_frag task_frag;
-#ifdef CONFIG_TASK_DELAY_ACCT
- struct task_delay_info *delays;
+#ifdef CONFIG_TASK_DELAY_ACCT
+ struct task_delay_info *delays;
#endif
+
#ifdef CONFIG_FAULT_INJECTION
- int make_it_fail;
+ int make_it_fail;
#endif
/*
- * when (nr_dirtied >= nr_dirtied_pause), it's time to call
- * balance_dirty_pages() for some dirty throttling pause
+ * When (nr_dirtied >= nr_dirtied_pause), it's time to call
+ * balance_dirty_pages() for a dirty throttling pause:
*/
- int nr_dirtied;
- int nr_dirtied_pause;
- unsigned long dirty_paused_when; /* start of a write-and-pause period */
+ int nr_dirtied;
+ int nr_dirtied_pause;
+ /* Start of a write-and-pause period: */
+ unsigned long dirty_paused_when;
#ifdef CONFIG_LATENCYTOP
- int latency_record_count;
- struct latency_record latency_record[LT_SAVECOUNT];
+ int latency_record_count;
+ struct latency_record latency_record[LT_SAVECOUNT];
#endif
/*
- * time slack values; these are used to round up poll() and
+ * Time slack values; these are used to round up poll() and
* select() etc timeout values. These are in nanoseconds.
*/
- u64 timer_slack_ns;
- u64 default_timer_slack_ns;
+ u64 timer_slack_ns;
+ u64 default_timer_slack_ns;
#ifdef CONFIG_KASAN
- unsigned int kasan_depth;
+ unsigned int kasan_depth;
#endif
+
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
- /* Index of current stored address in ret_stack */
- int curr_ret_stack;
- /* Stack of return addresses for return function tracing */
- struct ftrace_ret_stack *ret_stack;
- /* time stamp for last schedule */
- unsigned long long ftrace_timestamp;
+ /* Index of current stored address in ret_stack: */
+ int curr_ret_stack;
+
+ /* Stack of return addresses for return function tracing: */
+ struct ftrace_ret_stack *ret_stack;
+
+ /* Timestamp for last schedule: */
+ unsigned long long ftrace_timestamp;
+
/*
* Number of functions that haven't been traced
- * because of depth overrun.
+ * because of depth overrun:
*/
- atomic_t trace_overrun;
- /* Pause for the tracing */
- atomic_t tracing_graph_pause;
+ atomic_t trace_overrun;
+
+ /* Pause tracing: */
+ atomic_t tracing_graph_pause;
#endif
+
#ifdef CONFIG_TRACING
- /* state flags for use by tracers */
- unsigned long trace;
- /* bitmask and counter of trace recursion */
- unsigned long trace_recursion;
+ /* State flags for use by tracers: */
+ unsigned long trace;
+
+ /* Bitmask and counter of trace recursion: */
+ unsigned long trace_recursion;
#endif /* CONFIG_TRACING */
+
#ifdef CONFIG_KCOV
- /* Coverage collection mode enabled for this task (0 if disabled). */
- enum kcov_mode kcov_mode;
- /* Size of the kcov_area. */
- unsigned kcov_size;
- /* Buffer for coverage collection. */
- void *kcov_area;
- /* kcov desciptor wired with this task or NULL. */
- struct kcov *kcov;
+ /* Coverage collection mode enabled for this task (0 if disabled): */
+ enum kcov_mode kcov_mode;
+
+ /* Size of the kcov_area: */
+ unsigned int kcov_size;
+
+ /* Buffer for coverage collection: */
+ void *kcov_area;
+
+ /* KCOV descriptor wired with this task or NULL: */
+ struct kcov *kcov;
#endif
+
#ifdef CONFIG_MEMCG
- struct mem_cgroup *memcg_in_oom;
- gfp_t memcg_oom_gfp_mask;
- int memcg_oom_order;
+ struct mem_cgroup *memcg_in_oom;
+ gfp_t memcg_oom_gfp_mask;
+ int memcg_oom_order;
- /* number of pages to reclaim on returning to userland */
- unsigned int memcg_nr_pages_over_high;
+ /* Number of pages to reclaim on returning to userland: */
+ unsigned int memcg_nr_pages_over_high;
#endif
+
#ifdef CONFIG_UPROBES
- struct uprobe_task *utask;
+ struct uprobe_task *utask;
#endif
#if defined(CONFIG_BCACHE) || defined(CONFIG_BCACHE_MODULE)
- unsigned int sequential_io;
- unsigned int sequential_io_avg;
+ unsigned int sequential_io;
+ unsigned int sequential_io_avg;
#endif
#ifdef CONFIG_DEBUG_ATOMIC_SLEEP
- unsigned long task_state_change;
+ unsigned long task_state_change;
#endif
- int pagefault_disabled;
+ int pagefault_disabled;
#ifdef CONFIG_MMU
- struct task_struct *oom_reaper_list;
+ struct task_struct *oom_reaper_list;
#endif
#ifdef CONFIG_VMAP_STACK
- struct vm_struct *stack_vm_area;
+ struct vm_struct *stack_vm_area;
#endif
#ifdef CONFIG_THREAD_INFO_IN_TASK
- /* A live task holds one reference. */
- atomic_t stack_refcount;
+ /* A live task holds one reference: */
+ atomic_t stack_refcount;
#endif
-/* CPU-specific state of this task */
- struct thread_struct thread;
-/*
- * WARNING: on x86, 'thread_struct' contains a variable-sized
- * structure. It *MUST* be at the end of 'task_struct'.
- *
- * Do not put anything below here!
- */
-};
-
-#ifdef CONFIG_ARCH_WANTS_DYNAMIC_TASK_STRUCT
-extern int arch_task_struct_size __read_mostly;
-#else
-# define arch_task_struct_size (sizeof(struct task_struct))
-#endif
-
-#ifdef CONFIG_VMAP_STACK
-static inline struct vm_struct *task_stack_vm_area(const struct task_struct *t)
-{
- return t->stack_vm_area;
-}
-#else
-static inline struct vm_struct *task_stack_vm_area(const struct task_struct *t)
-{
- return NULL;
-}
-#endif
-
-/* Future-safe accessor for struct task_struct's cpus_allowed. */
-#define tsk_cpus_allowed(tsk) (&(tsk)->cpus_allowed)
-
-static inline int tsk_nr_cpus_allowed(struct task_struct *p)
-{
- return p->nr_cpus_allowed;
-}
-
-#define TNF_MIGRATED 0x01
-#define TNF_NO_GROUP 0x02
-#define TNF_SHARED 0x04
-#define TNF_FAULT_LOCAL 0x08
-#define TNF_MIGRATE_FAIL 0x10
-
-static inline bool in_vfork(struct task_struct *tsk)
-{
- bool ret;
+ /* CPU-specific state of this task: */
+ struct thread_struct thread;
/*
- * need RCU to access ->real_parent if CLONE_VM was used along with
- * CLONE_PARENT.
- *
- * We check real_parent->mm == tsk->mm because CLONE_VFORK does not
- * imply CLONE_VM
- *
- * CLONE_VFORK can be used with CLONE_PARENT/CLONE_THREAD and thus
- * ->real_parent is not necessarily the task doing vfork(), so in
- * theory we can't rely on task_lock() if we want to dereference it.
+ * WARNING: on x86, 'thread_struct' contains a variable-sized
+ * structure. It *MUST* be at the end of 'task_struct'.
*
- * And in this case we can't trust the real_parent->mm == tsk->mm
- * check, it can be false negative. But we do not care, if init or
- * another oom-unkillable task does this it should blame itself.
+ * Do not put anything below here!
*/
- rcu_read_lock();
- ret = tsk->vfork_done && tsk->real_parent->mm == tsk->mm;
- rcu_read_unlock();
-
- return ret;
-}
-
-#ifdef CONFIG_NUMA_BALANCING
-extern void task_numa_fault(int last_node, int node, int pages, int flags);
-extern pid_t task_numa_group_id(struct task_struct *p);
-extern void set_numabalancing_state(bool enabled);
-extern void task_numa_free(struct task_struct *p);
-extern bool should_numa_migrate_memory(struct task_struct *p, struct page *page,
- int src_nid, int dst_cpu);
-#else
-static inline void task_numa_fault(int last_node, int node, int pages,
- int flags)
-{
-}
-static inline pid_t task_numa_group_id(struct task_struct *p)
-{
- return 0;
-}
-static inline void set_numabalancing_state(bool enabled)
-{
-}
-static inline void task_numa_free(struct task_struct *p)
-{
-}
-static inline bool should_numa_migrate_memory(struct task_struct *p,
- struct page *page, int src_nid, int dst_cpu)
-{
- return true;
-}
-#endif
+};
static inline struct pid *task_pid(struct task_struct *task)
{
@@ -2078,7 +1060,7 @@ static inline struct pid *task_tgid(struct task_struct *task)
}
/*
- * Without tasklist or rcu lock it is not safe to dereference
+ * Without tasklist or RCU lock it is not safe to dereference
* the result of task_pgrp/task_session even if task == current,
* we can race with another thread doing sys_setsid/sys_setpgid.
*/
@@ -2092,8 +1074,6 @@ static inline struct pid *task_session(struct task_struct *task)
return task->group_leader->pids[PIDTYPE_SID].pid;
}
-struct pid_namespace;
-
/*
* the helpers to get the task's different pids as they are seen
* from various namespaces
@@ -2107,16 +1087,14 @@ struct pid_namespace;
*
* see also pid_nr() etc in include/linux/pid.h
*/
-pid_t __task_pid_nr_ns(struct task_struct *task, enum pid_type type,
- struct pid_namespace *ns);
+pid_t __task_pid_nr_ns(struct task_struct *task, enum pid_type type, struct pid_namespace *ns);
static inline pid_t task_pid_nr(struct task_struct *tsk)
{
return tsk->pid;
}
-static inline pid_t task_pid_nr_ns(struct task_struct *tsk,
- struct pid_namespace *ns)
+static inline pid_t task_pid_nr_ns(struct task_struct *tsk, struct pid_namespace *ns)
{
return __task_pid_nr_ns(tsk, PIDTYPE_PID, ns);
}
@@ -2132,15 +1110,28 @@ static inline pid_t task_tgid_nr(struct task_struct *tsk)
return tsk->tgid;
}
-pid_t task_tgid_nr_ns(struct task_struct *tsk, struct pid_namespace *ns);
+extern pid_t task_tgid_nr_ns(struct task_struct *tsk, struct pid_namespace *ns);
static inline pid_t task_tgid_vnr(struct task_struct *tsk)
{
return pid_vnr(task_tgid(tsk));
}
+/**
+ * pid_alive - check that a task structure is not stale
+ * @p: Task structure to be checked.
+ *
+ * Test if a process is not yet dead (at most zombie state)
+ * If pid_alive fails, then pointers within the task structure
+ * can be stale and must not be dereferenced.
+ *
+ * Return: 1 if the process is alive. 0 otherwise.
+ */
+static inline int pid_alive(const struct task_struct *p)
+{
+ return p->pids[PIDTYPE_PID].pid != NULL;
+}
-static inline int pid_alive(const struct task_struct *p);
static inline pid_t task_ppid_nr_ns(const struct task_struct *tsk, struct pid_namespace *ns)
{
pid_t pid = 0;
@@ -2158,8 +1149,7 @@ static inline pid_t task_ppid_nr(const struct task_struct *tsk)
return task_ppid_nr_ns(tsk, &init_pid_ns);
}
-static inline pid_t task_pgrp_nr_ns(struct task_struct *tsk,
- struct pid_namespace *ns)
+static inline pid_t task_pgrp_nr_ns(struct task_struct *tsk, struct pid_namespace *ns)
{
return __task_pid_nr_ns(tsk, PIDTYPE_PGID, ns);
}
@@ -2170,8 +1160,7 @@ static inline pid_t task_pgrp_vnr(struct task_struct *tsk)
}
-static inline pid_t task_session_nr_ns(struct task_struct *tsk,
- struct pid_namespace *ns)
+static inline pid_t task_session_nr_ns(struct task_struct *tsk, struct pid_namespace *ns)
{
return __task_pid_nr_ns(tsk, PIDTYPE_SID, ns);
}
@@ -2181,28 +1170,13 @@ static inline pid_t task_session_vnr(struct task_struct *tsk)
return __task_pid_nr_ns(tsk, PIDTYPE_SID, NULL);
}
-/* obsolete, do not use */
+/* Obsolete, do not use: */
static inline pid_t task_pgrp_nr(struct task_struct *tsk)
{
return task_pgrp_nr_ns(tsk, &init_pid_ns);
}
/**
- * pid_alive - check that a task structure is not stale
- * @p: Task structure to be checked.
- *
- * Test if a process is not yet dead (at most zombie state)
- * If pid_alive fails, then pointers within the task structure
- * can be stale and must not be dereferenced.
- *
- * Return: 1 if the process is alive. 0 otherwise.
- */
-static inline int pid_alive(const struct task_struct *p)
-{
- return p->pids[PIDTYPE_PID].pid != NULL;
-}
-
-/**
* is_global_init - check if a task structure is init. Since init
* is free to have sub-threads we need to check tgid.
* @tsk: Task structure to be checked.
@@ -2218,89 +1192,37 @@ static inline int is_global_init(struct task_struct *tsk)
extern struct pid *cad_pid;
-extern void free_task(struct task_struct *tsk);
-#define get_task_struct(tsk) do { atomic_inc(&(tsk)->usage); } while(0)
-
-extern void __put_task_struct(struct task_struct *t);
-
-static inline void put_task_struct(struct task_struct *t)
-{
- if (atomic_dec_and_test(&t->usage))
- __put_task_struct(t);
-}
-
-struct task_struct *task_rcu_dereference(struct task_struct **ptask);
-struct task_struct *try_get_task_struct(struct task_struct **ptask);
-
-#ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN
-extern void task_cputime(struct task_struct *t,
- u64 *utime, u64 *stime);
-extern u64 task_gtime(struct task_struct *t);
-#else
-static inline void task_cputime(struct task_struct *t,
- u64 *utime, u64 *stime)
-{
- *utime = t->utime;
- *stime = t->stime;
-}
-
-static inline u64 task_gtime(struct task_struct *t)
-{
- return t->gtime;
-}
-#endif
-
-#ifdef CONFIG_ARCH_HAS_SCALED_CPUTIME
-static inline void task_cputime_scaled(struct task_struct *t,
- u64 *utimescaled,
- u64 *stimescaled)
-{
- *utimescaled = t->utimescaled;
- *stimescaled = t->stimescaled;
-}
-#else
-static inline void task_cputime_scaled(struct task_struct *t,
- u64 *utimescaled,
- u64 *stimescaled)
-{
- task_cputime(t, utimescaled, stimescaled);
-}
-#endif
-
-extern void task_cputime_adjusted(struct task_struct *p, u64 *ut, u64 *st);
-extern void thread_group_cputime_adjusted(struct task_struct *p, u64 *ut, u64 *st);
-
/*
* Per process flags
*/
-#define PF_IDLE 0x00000002 /* I am an IDLE thread */
-#define PF_EXITING 0x00000004 /* getting shut down */
-#define PF_EXITPIDONE 0x00000008 /* pi exit done on shut down */
-#define PF_VCPU 0x00000010 /* I'm a virtual CPU */
-#define PF_WQ_WORKER 0x00000020 /* I'm a workqueue worker */
-#define PF_FORKNOEXEC 0x00000040 /* forked but didn't exec */
-#define PF_MCE_PROCESS 0x00000080 /* process policy on mce errors */
-#define PF_SUPERPRIV 0x00000100 /* used super-user privileges */
-#define PF_DUMPCORE 0x00000200 /* dumped core */
-#define PF_SIGNALED 0x00000400 /* killed by a signal */
-#define PF_MEMALLOC 0x00000800 /* Allocating memory */
-#define PF_NPROC_EXCEEDED 0x00001000 /* set_user noticed that RLIMIT_NPROC was exceeded */
-#define PF_USED_MATH 0x00002000 /* if unset the fpu must be initialized before use */
-#define PF_USED_ASYNC 0x00004000 /* used async_schedule*(), used by module init */
-#define PF_NOFREEZE 0x00008000 /* this thread should not be frozen */
-#define PF_FROZEN 0x00010000 /* frozen for system suspend */
-#define PF_FSTRANS 0x00020000 /* inside a filesystem transaction */
-#define PF_KSWAPD 0x00040000 /* I am kswapd */
-#define PF_MEMALLOC_NOIO 0x00080000 /* Allocating memory without IO involved */
-#define PF_LESS_THROTTLE 0x00100000 /* Throttle me less: I clean memory */
-#define PF_KTHREAD 0x00200000 /* I am a kernel thread */
-#define PF_RANDOMIZE 0x00400000 /* randomize virtual address space */
-#define PF_SWAPWRITE 0x00800000 /* Allowed to write to swap */
-#define PF_NO_SETAFFINITY 0x04000000 /* Userland is not allowed to meddle with cpus_allowed */
-#define PF_MCE_EARLY 0x08000000 /* Early kill for mce process policy */
-#define PF_MUTEX_TESTER 0x20000000 /* Thread belongs to the rt mutex tester */
-#define PF_FREEZER_SKIP 0x40000000 /* Freezer should not count it as freezable */
-#define PF_SUSPEND_TASK 0x80000000 /* this thread called freeze_processes and should not be frozen */
+#define PF_IDLE 0x00000002 /* I am an IDLE thread */
+#define PF_EXITING 0x00000004 /* Getting shut down */
+#define PF_EXITPIDONE 0x00000008 /* PI exit done on shut down */
+#define PF_VCPU 0x00000010 /* I'm a virtual CPU */
+#define PF_WQ_WORKER 0x00000020 /* I'm a workqueue worker */
+#define PF_FORKNOEXEC 0x00000040 /* Forked but didn't exec */
+#define PF_MCE_PROCESS 0x00000080 /* Process policy on mce errors */
+#define PF_SUPERPRIV 0x00000100 /* Used super-user privileges */
+#define PF_DUMPCORE 0x00000200 /* Dumped core */
+#define PF_SIGNALED 0x00000400 /* Killed by a signal */
+#define PF_MEMALLOC 0x00000800 /* Allocating memory */
+#define PF_NPROC_EXCEEDED 0x00001000 /* set_user() noticed that RLIMIT_NPROC was exceeded */
+#define PF_USED_MATH 0x00002000 /* If unset the fpu must be initialized before use */
+#define PF_USED_ASYNC 0x00004000 /* Used async_schedule*(), used by module init */
+#define PF_NOFREEZE 0x00008000 /* This thread should not be frozen */
+#define PF_FROZEN 0x00010000 /* Frozen for system suspend */
+#define PF_FSTRANS 0x00020000 /* Inside a filesystem transaction */
+#define PF_KSWAPD 0x00040000 /* I am kswapd */
+#define PF_MEMALLOC_NOIO 0x00080000 /* Allocating memory without IO involved */
+#define PF_LESS_THROTTLE 0x00100000 /* Throttle me less: I clean memory */
+#define PF_KTHREAD 0x00200000 /* I am a kernel thread */
+#define PF_RANDOMIZE 0x00400000 /* Randomize virtual address space */
+#define PF_SWAPWRITE 0x00800000 /* Allowed to write to swap */
+#define PF_NO_SETAFFINITY 0x04000000 /* Userland is not allowed to meddle with cpus_allowed */
+#define PF_MCE_EARLY 0x08000000 /* Early kill for mce process policy */
+#define PF_MUTEX_TESTER 0x20000000 /* Thread belongs to the rt mutex tester */
+#define PF_FREEZER_SKIP 0x40000000 /* Freezer should not count it as freezable */
+#define PF_SUSPEND_TASK 0x80000000 /* This thread called freeze_processes() and should not be frozen */
/*
* Only the _current_ task can read/write to tsk->flags, but other
@@ -2313,55 +1235,38 @@ extern void thread_group_cputime_adjusted(struct task_struct *p, u64 *ut, u64 *s
* child is not running and in turn not changing child->flags
* at the same time the parent does it.
*/
-#define clear_stopped_child_used_math(child) do { (child)->flags &= ~PF_USED_MATH; } while (0)
-#define set_stopped_child_used_math(child) do { (child)->flags |= PF_USED_MATH; } while (0)
-#define clear_used_math() clear_stopped_child_used_math(current)
-#define set_used_math() set_stopped_child_used_math(current)
+#define clear_stopped_child_used_math(child) do { (child)->flags &= ~PF_USED_MATH; } while (0)
+#define set_stopped_child_used_math(child) do { (child)->flags |= PF_USED_MATH; } while (0)
+#define clear_used_math() clear_stopped_child_used_math(current)
+#define set_used_math() set_stopped_child_used_math(current)
+
#define conditional_stopped_child_used_math(condition, child) \
do { (child)->flags &= ~PF_USED_MATH, (child)->flags |= (condition) ? PF_USED_MATH : 0; } while (0)
-#define conditional_used_math(condition) \
- conditional_stopped_child_used_math(condition, current)
-#define copy_to_stopped_child_used_math(child) \
- do { (child)->flags &= ~PF_USED_MATH, (child)->flags |= current->flags & PF_USED_MATH; } while (0)
-/* NOTE: this will return 0 or PF_USED_MATH, it will never return 1 */
-#define tsk_used_math(p) ((p)->flags & PF_USED_MATH)
-#define used_math() tsk_used_math(current)
-/* __GFP_IO isn't allowed if PF_MEMALLOC_NOIO is set in current->flags
- * __GFP_FS is also cleared as it implies __GFP_IO.
- */
-static inline gfp_t memalloc_noio_flags(gfp_t flags)
-{
- if (unlikely(current->flags & PF_MEMALLOC_NOIO))
- flags &= ~(__GFP_IO | __GFP_FS);
- return flags;
-}
+#define conditional_used_math(condition) conditional_stopped_child_used_math(condition, current)
-static inline unsigned int memalloc_noio_save(void)
-{
- unsigned int flags = current->flags & PF_MEMALLOC_NOIO;
- current->flags |= PF_MEMALLOC_NOIO;
- return flags;
-}
+#define copy_to_stopped_child_used_math(child) \
+ do { (child)->flags &= ~PF_USED_MATH, (child)->flags |= current->flags & PF_USED_MATH; } while (0)
-static inline void memalloc_noio_restore(unsigned int flags)
-{
- current->flags = (current->flags & ~PF_MEMALLOC_NOIO) | flags;
-}
+/* NOTE: this will return 0 or PF_USED_MATH, it will never return 1 */
+#define tsk_used_math(p) ((p)->flags & PF_USED_MATH)
+#define used_math() tsk_used_math(current)
/* Per-process atomic flags. */
-#define PFA_NO_NEW_PRIVS 0 /* May not gain new privileges. */
-#define PFA_SPREAD_PAGE 1 /* Spread page cache over cpuset */
-#define PFA_SPREAD_SLAB 2 /* Spread some slab caches over cpuset */
-#define PFA_LMK_WAITING 3 /* Lowmemorykiller is waiting */
+#define PFA_NO_NEW_PRIVS 0 /* May not gain new privileges. */
+#define PFA_SPREAD_PAGE 1 /* Spread page cache over cpuset */
+#define PFA_SPREAD_SLAB 2 /* Spread some slab caches over cpuset */
+#define PFA_LMK_WAITING 3 /* Lowmemorykiller is waiting */
#define TASK_PFA_TEST(name, func) \
static inline bool task_##func(struct task_struct *p) \
{ return test_bit(PFA_##name, &p->atomic_flags); }
+
#define TASK_PFA_SET(name, func) \
static inline void task_set_##func(struct task_struct *p) \
{ set_bit(PFA_##name, &p->atomic_flags); }
+
#define TASK_PFA_CLEAR(name, func) \
static inline void task_clear_##func(struct task_struct *p) \
{ clear_bit(PFA_##name, &p->atomic_flags); }
@@ -2380,75 +1285,23 @@ TASK_PFA_CLEAR(SPREAD_SLAB, spread_slab)
TASK_PFA_TEST(LMK_WAITING, lmk_waiting)
TASK_PFA_SET(LMK_WAITING, lmk_waiting)
-/*
- * task->jobctl flags
- */
-#define JOBCTL_STOP_SIGMASK 0xffff /* signr of the last group stop */
-
-#define JOBCTL_STOP_DEQUEUED_BIT 16 /* stop signal dequeued */
-#define JOBCTL_STOP_PENDING_BIT 17 /* task should stop for group stop */
-#define JOBCTL_STOP_CONSUME_BIT 18 /* consume group stop count */
-#define JOBCTL_TRAP_STOP_BIT 19 /* trap for STOP */
-#define JOBCTL_TRAP_NOTIFY_BIT 20 /* trap for NOTIFY */
-#define JOBCTL_TRAPPING_BIT 21 /* switching to TRACED */
-#define JOBCTL_LISTENING_BIT 22 /* ptracer is listening for events */
-
-#define JOBCTL_STOP_DEQUEUED (1UL << JOBCTL_STOP_DEQUEUED_BIT)
-#define JOBCTL_STOP_PENDING (1UL << JOBCTL_STOP_PENDING_BIT)
-#define JOBCTL_STOP_CONSUME (1UL << JOBCTL_STOP_CONSUME_BIT)
-#define JOBCTL_TRAP_STOP (1UL << JOBCTL_TRAP_STOP_BIT)
-#define JOBCTL_TRAP_NOTIFY (1UL << JOBCTL_TRAP_NOTIFY_BIT)
-#define JOBCTL_TRAPPING (1UL << JOBCTL_TRAPPING_BIT)
-#define JOBCTL_LISTENING (1UL << JOBCTL_LISTENING_BIT)
-
-#define JOBCTL_TRAP_MASK (JOBCTL_TRAP_STOP | JOBCTL_TRAP_NOTIFY)
-#define JOBCTL_PENDING_MASK (JOBCTL_STOP_PENDING | JOBCTL_TRAP_MASK)
-
-extern bool task_set_jobctl_pending(struct task_struct *task,
- unsigned long mask);
-extern void task_clear_jobctl_trapping(struct task_struct *task);
-extern void task_clear_jobctl_pending(struct task_struct *task,
- unsigned long mask);
-
-static inline void rcu_copy_process(struct task_struct *p)
-{
-#ifdef CONFIG_PREEMPT_RCU
- p->rcu_read_lock_nesting = 0;
- p->rcu_read_unlock_special.s = 0;
- p->rcu_blocked_node = NULL;
- INIT_LIST_HEAD(&p->rcu_node_entry);
-#endif /* #ifdef CONFIG_PREEMPT_RCU */
-#ifdef CONFIG_TASKS_RCU
- p->rcu_tasks_holdout = false;
- INIT_LIST_HEAD(&p->rcu_tasks_holdout_list);
- p->rcu_tasks_idle_cpu = -1;
-#endif /* #ifdef CONFIG_TASKS_RCU */
-}
-
-static inline void tsk_restore_flags(struct task_struct *task,
- unsigned long orig_flags, unsigned long flags)
+static inline void
+tsk_restore_flags(struct task_struct *task, unsigned long orig_flags, unsigned long flags)
{
task->flags &= ~flags;
task->flags |= orig_flags & flags;
}
-extern int cpuset_cpumask_can_shrink(const struct cpumask *cur,
- const struct cpumask *trial);
-extern int task_can_attach(struct task_struct *p,
- const struct cpumask *cs_cpus_allowed);
+extern int cpuset_cpumask_can_shrink(const struct cpumask *cur, const struct cpumask *trial);
+extern int task_can_attach(struct task_struct *p, const struct cpumask *cs_cpus_allowed);
#ifdef CONFIG_SMP
-extern void do_set_cpus_allowed(struct task_struct *p,
- const struct cpumask *new_mask);
-
-extern int set_cpus_allowed_ptr(struct task_struct *p,
- const struct cpumask *new_mask);
+extern void do_set_cpus_allowed(struct task_struct *p, const struct cpumask *new_mask);
+extern int set_cpus_allowed_ptr(struct task_struct *p, const struct cpumask *new_mask);
#else
-static inline void do_set_cpus_allowed(struct task_struct *p,
- const struct cpumask *new_mask)
+static inline void do_set_cpus_allowed(struct task_struct *p, const struct cpumask *new_mask)
{
}
-static inline int set_cpus_allowed_ptr(struct task_struct *p,
- const struct cpumask *new_mask)
+static inline int set_cpus_allowed_ptr(struct task_struct *p, const struct cpumask *new_mask)
{
if (!cpumask_test_cpu(0, new_mask))
return -EINVAL;
@@ -2456,165 +1309,14 @@ static inline int set_cpus_allowed_ptr(struct task_struct *p,
}
#endif
-#ifdef CONFIG_NO_HZ_COMMON
-void calc_load_enter_idle(void);
-void calc_load_exit_idle(void);
-#else
-static inline void calc_load_enter_idle(void) { }
-static inline void calc_load_exit_idle(void) { }
-#endif /* CONFIG_NO_HZ_COMMON */
-
#ifndef cpu_relax_yield
#define cpu_relax_yield() cpu_relax()
#endif
-/*
- * Do not use outside of architecture code which knows its limitations.
- *
- * sched_clock() has no promise of monotonicity or bounded drift between
- * CPUs, use (which you should not) requires disabling IRQs.
- *
- * Please use one of the three interfaces below.
- */
-extern unsigned long long notrace sched_clock(void);
-/*
- * See the comment in kernel/sched/clock.c
- */
-extern u64 running_clock(void);
-extern u64 sched_clock_cpu(int cpu);
-
-
-extern void sched_clock_init(void);
-
-#ifndef CONFIG_HAVE_UNSTABLE_SCHED_CLOCK
-static inline void sched_clock_init_late(void)
-{
-}
-
-static inline void sched_clock_tick(void)
-{
-}
-
-static inline void clear_sched_clock_stable(void)
-{
-}
-
-static inline void sched_clock_idle_sleep_event(void)
-{
-}
-
-static inline void sched_clock_idle_wakeup_event(u64 delta_ns)
-{
-}
-
-static inline u64 cpu_clock(int cpu)
-{
- return sched_clock();
-}
-
-static inline u64 local_clock(void)
-{
- return sched_clock();
-}
-#else
-extern void sched_clock_init_late(void);
-/*
- * Architectures can set this to 1 if they have specified
- * CONFIG_HAVE_UNSTABLE_SCHED_CLOCK in their arch Kconfig,
- * but then during bootup it turns out that sched_clock()
- * is reliable after all:
- */
-extern int sched_clock_stable(void);
-extern void clear_sched_clock_stable(void);
-
-extern void sched_clock_tick(void);
-extern void sched_clock_idle_sleep_event(void);
-extern void sched_clock_idle_wakeup_event(u64 delta_ns);
-
-/*
- * As outlined in clock.c, provides a fast, high resolution, nanosecond
- * time source that is monotonic per cpu argument and has bounded drift
- * between cpus.
- *
- * ######################### BIG FAT WARNING ##########################
- * # when comparing cpu_clock(i) to cpu_clock(j) for i != j, time can #
- * # go backwards !! #
- * ####################################################################
- */
-static inline u64 cpu_clock(int cpu)
-{
- return sched_clock_cpu(cpu);
-}
-
-static inline u64 local_clock(void)
-{
- return sched_clock_cpu(raw_smp_processor_id());
-}
-#endif
-
-#ifdef CONFIG_IRQ_TIME_ACCOUNTING
-/*
- * An i/f to runtime opt-in for irq time accounting based off of sched_clock.
- * The reason for this explicit opt-in is not to have perf penalty with
- * slow sched_clocks.
- */
-extern void enable_sched_clock_irqtime(void);
-extern void disable_sched_clock_irqtime(void);
-#else
-static inline void enable_sched_clock_irqtime(void) {}
-static inline void disable_sched_clock_irqtime(void) {}
-#endif
-
-extern unsigned long long
-task_sched_runtime(struct task_struct *task);
-
-/* sched_exec is called by processes performing an exec */
-#ifdef CONFIG_SMP
-extern void sched_exec(void);
-#else
-#define sched_exec() {}
-#endif
-
-extern void sched_clock_idle_sleep_event(void);
-extern void sched_clock_idle_wakeup_event(u64 delta_ns);
-
-#ifdef CONFIG_HOTPLUG_CPU
-extern void idle_task_exit(void);
-#else
-static inline void idle_task_exit(void) {}
-#endif
-
-#if defined(CONFIG_NO_HZ_COMMON) && defined(CONFIG_SMP)
-extern void wake_up_nohz_cpu(int cpu);
-#else
-static inline void wake_up_nohz_cpu(int cpu) { }
-#endif
-
-#ifdef CONFIG_NO_HZ_FULL
-extern u64 scheduler_tick_max_deferment(void);
-#endif
-
-#ifdef CONFIG_SCHED_AUTOGROUP
-extern void sched_autogroup_create_attach(struct task_struct *p);
-extern void sched_autogroup_detach(struct task_struct *p);
-extern void sched_autogroup_fork(struct signal_struct *sig);
-extern void sched_autogroup_exit(struct signal_struct *sig);
-extern void sched_autogroup_exit_task(struct task_struct *p);
-#ifdef CONFIG_PROC_FS
-extern void proc_sched_autogroup_show_task(struct task_struct *p, struct seq_file *m);
-extern int proc_sched_autogroup_set_nice(struct task_struct *p, int nice);
-#endif
-#else
-static inline void sched_autogroup_create_attach(struct task_struct *p) { }
-static inline void sched_autogroup_detach(struct task_struct *p) { }
-static inline void sched_autogroup_fork(struct signal_struct *sig) { }
-static inline void sched_autogroup_exit(struct signal_struct *sig) { }
-static inline void sched_autogroup_exit_task(struct task_struct *p) { }
-#endif
-
extern int yield_to(struct task_struct *p, bool preempt);
extern void set_user_nice(struct task_struct *p, long nice);
extern int task_prio(const struct task_struct *p);
+
/**
* task_nice - return the nice value of a given task.
* @p: the task in question.
@@ -2625,16 +1327,15 @@ static inline int task_nice(const struct task_struct *p)
{
return PRIO_TO_NICE((p)->static_prio);
}
+
extern int can_nice(const struct task_struct *p, const int nice);
extern int task_curr(const struct task_struct *p);
extern int idle_cpu(int cpu);
-extern int sched_setscheduler(struct task_struct *, int,
- const struct sched_param *);
-extern int sched_setscheduler_nocheck(struct task_struct *, int,
- const struct sched_param *);
-extern int sched_setattr(struct task_struct *,
- const struct sched_attr *);
+extern int sched_setscheduler(struct task_struct *, int, const struct sched_param *);
+extern int sched_setscheduler_nocheck(struct task_struct *, int, const struct sched_param *);
+extern int sched_setattr(struct task_struct *, const struct sched_attr *);
extern struct task_struct *idle_task(int cpu);
+
/**
* is_idle_task - is the specified task an idle task?
* @p: the task in question.
@@ -2645,6 +1346,7 @@ static inline bool is_idle_task(const struct task_struct *p)
{
return !!(p->flags & PF_IDLE);
}
+
extern struct task_struct *curr_task(int cpu);
extern void ia64_set_curr_task(int cpu, struct task_struct *p);
@@ -2657,23 +1359,15 @@ union thread_union {
unsigned long stack[THREAD_SIZE/sizeof(long)];
};
-#ifndef __HAVE_ARCH_KSTACK_END
-static inline int kstack_end(void *addr)
+#ifdef CONFIG_THREAD_INFO_IN_TASK
+static inline struct thread_info *task_thread_info(struct task_struct *task)
{
- /* Reliable end of stack detection:
- * Some APM bios versions misalign the stack
- */
- return !(((unsigned long)addr+sizeof(void*)-1) & (THREAD_SIZE-sizeof(void*)));
+ return &task->thread_info;
}
+#elif !defined(__HAVE_THREAD_FUNCTIONS)
+# define task_thread_info(task) ((struct thread_info *)(task)->stack)
#endif
-extern union thread_union init_thread_union;
-extern struct task_struct init_task;
-
-extern struct mm_struct init_mm;
-
-extern struct pid_namespace init_pid_ns;
-
/*
* find a task by one of its numerical ids
*
@@ -2686,365 +1380,25 @@ extern struct pid_namespace init_pid_ns;
*/
extern struct task_struct *find_task_by_vpid(pid_t nr);
-extern struct task_struct *find_task_by_pid_ns(pid_t nr,
- struct pid_namespace *ns);
-
-/* per-UID process charging. */
-extern struct user_struct * alloc_uid(kuid_t);
-static inline struct user_struct *get_uid(struct user_struct *u)
-{
- atomic_inc(&u->__count);
- return u;
-}
-extern void free_uid(struct user_struct *);
-
-#include <asm/current.h>
-
-extern void xtime_update(unsigned long ticks);
+extern struct task_struct *find_task_by_pid_ns(pid_t nr, struct pid_namespace *ns);
extern int wake_up_state(struct task_struct *tsk, unsigned int state);
extern int wake_up_process(struct task_struct *tsk);
extern void wake_up_new_task(struct task_struct *tsk);
-#ifdef CONFIG_SMP
- extern void kick_process(struct task_struct *tsk);
-#else
- static inline void kick_process(struct task_struct *tsk) { }
-#endif
-extern int sched_fork(unsigned long clone_flags, struct task_struct *p);
-extern void sched_dead(struct task_struct *p);
-
-extern void proc_caches_init(void);
-extern void flush_signals(struct task_struct *);
-extern void ignore_signals(struct task_struct *);
-extern void flush_signal_handlers(struct task_struct *, int force_default);
-extern int dequeue_signal(struct task_struct *tsk, sigset_t *mask, siginfo_t *info);
-
-static inline int kernel_dequeue_signal(siginfo_t *info)
-{
- struct task_struct *tsk = current;
- siginfo_t __info;
- int ret;
-
- spin_lock_irq(&tsk->sighand->siglock);
- ret = dequeue_signal(tsk, &tsk->blocked, info ?: &__info);
- spin_unlock_irq(&tsk->sighand->siglock);
-
- return ret;
-}
-
-static inline void kernel_signal_stop(void)
-{
- spin_lock_irq(&current->sighand->siglock);
- if (current->jobctl & JOBCTL_STOP_DEQUEUED)
- __set_current_state(TASK_STOPPED);
- spin_unlock_irq(&current->sighand->siglock);
-
- schedule();
-}
-
-extern void release_task(struct task_struct * p);
-extern int send_sig_info(int, struct siginfo *, struct task_struct *);
-extern int force_sigsegv(int, struct task_struct *);
-extern int force_sig_info(int, struct siginfo *, struct task_struct *);
-extern int __kill_pgrp_info(int sig, struct siginfo *info, struct pid *pgrp);
-extern int kill_pid_info(int sig, struct siginfo *info, struct pid *pid);
-extern int kill_pid_info_as_cred(int, struct siginfo *, struct pid *,
- const struct cred *, u32);
-extern int kill_pgrp(struct pid *pid, int sig, int priv);
-extern int kill_pid(struct pid *pid, int sig, int priv);
-extern int kill_proc_info(int, struct siginfo *, pid_t);
-extern __must_check bool do_notify_parent(struct task_struct *, int);
-extern void __wake_up_parent(struct task_struct *p, struct task_struct *parent);
-extern void force_sig(int, struct task_struct *);
-extern int send_sig(int, struct task_struct *, int);
-extern int zap_other_threads(struct task_struct *p);
-extern struct sigqueue *sigqueue_alloc(void);
-extern void sigqueue_free(struct sigqueue *);
-extern int send_sigqueue(struct sigqueue *, struct task_struct *, int group);
-extern int do_sigaction(int, struct k_sigaction *, struct k_sigaction *);
-
-#ifdef TIF_RESTORE_SIGMASK
-/*
- * Legacy restore_sigmask accessors. These are inefficient on
- * SMP architectures because they require atomic operations.
- */
-
-/**
- * set_restore_sigmask() - make sure saved_sigmask processing gets done
- *
- * This sets TIF_RESTORE_SIGMASK and ensures that the arch signal code
- * will run before returning to user mode, to process the flag. For
- * all callers, TIF_SIGPENDING is already set or it's no harm to set
- * it. TIF_RESTORE_SIGMASK need not be in the set of bits that the
- * arch code will notice on return to user mode, in case those bits
- * are scarce. We set TIF_SIGPENDING here to ensure that the arch
- * signal code always gets run when TIF_RESTORE_SIGMASK is set.
- */
-static inline void set_restore_sigmask(void)
-{
- set_thread_flag(TIF_RESTORE_SIGMASK);
- WARN_ON(!test_thread_flag(TIF_SIGPENDING));
-}
-static inline void clear_restore_sigmask(void)
-{
- clear_thread_flag(TIF_RESTORE_SIGMASK);
-}
-static inline bool test_restore_sigmask(void)
-{
- return test_thread_flag(TIF_RESTORE_SIGMASK);
-}
-static inline bool test_and_clear_restore_sigmask(void)
-{
- return test_and_clear_thread_flag(TIF_RESTORE_SIGMASK);
-}
-
-#else /* TIF_RESTORE_SIGMASK */
-
-/* Higher-quality implementation, used if TIF_RESTORE_SIGMASK doesn't exist. */
-static inline void set_restore_sigmask(void)
-{
- current->restore_sigmask = true;
- WARN_ON(!test_thread_flag(TIF_SIGPENDING));
-}
-static inline void clear_restore_sigmask(void)
-{
- current->restore_sigmask = false;
-}
-static inline bool test_restore_sigmask(void)
-{
- return current->restore_sigmask;
-}
-static inline bool test_and_clear_restore_sigmask(void)
-{
- if (!current->restore_sigmask)
- return false;
- current->restore_sigmask = false;
- return true;
-}
-#endif
-
-static inline void restore_saved_sigmask(void)
-{
- if (test_and_clear_restore_sigmask())
- __set_current_blocked(&current->saved_sigmask);
-}
-
-static inline sigset_t *sigmask_to_save(void)
-{
- sigset_t *res = &current->blocked;
- if (unlikely(test_restore_sigmask()))
- res = &current->saved_sigmask;
- return res;
-}
-
-static inline int kill_cad_pid(int sig, int priv)
-{
- return kill_pid(cad_pid, sig, priv);
-}
-
-/* These can be the second arg to send_sig_info/send_group_sig_info. */
-#define SEND_SIG_NOINFO ((struct siginfo *) 0)
-#define SEND_SIG_PRIV ((struct siginfo *) 1)
-#define SEND_SIG_FORCED ((struct siginfo *) 2)
-
-/*
- * True if we are on the alternate signal stack.
- */
-static inline int on_sig_stack(unsigned long sp)
-{
- /*
- * If the signal stack is SS_AUTODISARM then, by construction, we
- * can't be on the signal stack unless user code deliberately set
- * SS_AUTODISARM when we were already on it.
- *
- * This improves reliability: if user state gets corrupted such that
- * the stack pointer points very close to the end of the signal stack,
- * then this check will enable the signal to be handled anyway.
- */
- if (current->sas_ss_flags & SS_AUTODISARM)
- return 0;
-
-#ifdef CONFIG_STACK_GROWSUP
- return sp >= current->sas_ss_sp &&
- sp - current->sas_ss_sp < current->sas_ss_size;
-#else
- return sp > current->sas_ss_sp &&
- sp - current->sas_ss_sp <= current->sas_ss_size;
-#endif
-}
-
-static inline int sas_ss_flags(unsigned long sp)
-{
- if (!current->sas_ss_size)
- return SS_DISABLE;
-
- return on_sig_stack(sp) ? SS_ONSTACK : 0;
-}
-
-static inline void sas_ss_reset(struct task_struct *p)
-{
- p->sas_ss_sp = 0;
- p->sas_ss_size = 0;
- p->sas_ss_flags = SS_DISABLE;
-}
-
-static inline unsigned long sigsp(unsigned long sp, struct ksignal *ksig)
-{
- if (unlikely((ksig->ka.sa.sa_flags & SA_ONSTACK)) && ! sas_ss_flags(sp))
-#ifdef CONFIG_STACK_GROWSUP
- return current->sas_ss_sp;
-#else
- return current->sas_ss_sp + current->sas_ss_size;
-#endif
- return sp;
-}
-
-/*
- * Routines for handling mm_structs
- */
-extern struct mm_struct * mm_alloc(void);
-
-/**
- * mmgrab() - Pin a &struct mm_struct.
- * @mm: The &struct mm_struct to pin.
- *
- * Make sure that @mm will not get freed even after the owning task
- * exits. This doesn't guarantee that the associated address space
- * will still exist later on and mmget_not_zero() has to be used before
- * accessing it.
- *
- * This is a preferred way to to pin @mm for a longer/unbounded amount
- * of time.
- *
- * Use mmdrop() to release the reference acquired by mmgrab().
- *
- * See also <Documentation/vm/active_mm.txt> for an in-depth explanation
- * of &mm_struct.mm_count vs &mm_struct.mm_users.
- */
-static inline void mmgrab(struct mm_struct *mm)
-{
- atomic_inc(&mm->mm_count);
-}
-
-/* mmdrop drops the mm and the page tables */
-extern void __mmdrop(struct mm_struct *);
-static inline void mmdrop(struct mm_struct *mm)
-{
- if (unlikely(atomic_dec_and_test(&mm->mm_count)))
- __mmdrop(mm);
-}
-
-static inline void mmdrop_async_fn(struct work_struct *work)
-{
- struct mm_struct *mm = container_of(work, struct mm_struct, async_put_work);
- __mmdrop(mm);
-}
-
-static inline void mmdrop_async(struct mm_struct *mm)
-{
- if (unlikely(atomic_dec_and_test(&mm->mm_count))) {
- INIT_WORK(&mm->async_put_work, mmdrop_async_fn);
- schedule_work(&mm->async_put_work);
- }
-}
-
-/**
- * mmget() - Pin the address space associated with a &struct mm_struct.
- * @mm: The address space to pin.
- *
- * Make sure that the address space of the given &struct mm_struct doesn't
- * go away. This does not protect against parts of the address space being
- * modified or freed, however.
- *
- * Never use this function to pin this address space for an
- * unbounded/indefinite amount of time.
- *
- * Use mmput() to release the reference acquired by mmget().
- *
- * See also <Documentation/vm/active_mm.txt> for an in-depth explanation
- * of &mm_struct.mm_count vs &mm_struct.mm_users.
- */
-static inline void mmget(struct mm_struct *mm)
-{
- atomic_inc(&mm->mm_users);
-}
-
-static inline bool mmget_not_zero(struct mm_struct *mm)
-{
- return atomic_inc_not_zero(&mm->mm_users);
-}
-
-/* mmput gets rid of the mappings and all user-space */
-extern void mmput(struct mm_struct *);
-#ifdef CONFIG_MMU
-/* same as above but performs the slow path from the async context. Can
- * be called from the atomic context as well
- */
-extern void mmput_async(struct mm_struct *);
-#endif
-
-/* Grab a reference to a task's mm, if it is not already going away */
-extern struct mm_struct *get_task_mm(struct task_struct *task);
-/*
- * Grab a reference to a task's mm, if it is not already going away
- * and ptrace_may_access with the mode parameter passed to it
- * succeeds.
- */
-extern struct mm_struct *mm_access(struct task_struct *task, unsigned int mode);
-/* Remove the current tasks stale references to the old mm_struct */
-extern void mm_release(struct task_struct *, struct mm_struct *);
-
-#ifdef CONFIG_HAVE_COPY_THREAD_TLS
-extern int copy_thread_tls(unsigned long, unsigned long, unsigned long,
- struct task_struct *, unsigned long);
-#else
-extern int copy_thread(unsigned long, unsigned long, unsigned long,
- struct task_struct *);
-
-/* Architectures that haven't opted into copy_thread_tls get the tls argument
- * via pt_regs, so ignore the tls argument passed via C. */
-static inline int copy_thread_tls(
- unsigned long clone_flags, unsigned long sp, unsigned long arg,
- struct task_struct *p, unsigned long tls)
-{
- return copy_thread(clone_flags, sp, arg, p);
-}
-#endif
-extern void flush_thread(void);
-#ifdef CONFIG_HAVE_EXIT_THREAD
-extern void exit_thread(struct task_struct *tsk);
+#ifdef CONFIG_SMP
+extern void kick_process(struct task_struct *tsk);
#else
-static inline void exit_thread(struct task_struct *tsk)
-{
-}
+static inline void kick_process(struct task_struct *tsk) { }
#endif
-extern void exit_files(struct task_struct *);
-extern void __cleanup_sighand(struct sighand_struct *);
-
-extern void exit_itimers(struct signal_struct *);
-extern void flush_itimer_signals(void);
-
-extern void do_group_exit(int);
-
-extern int do_execve(struct filename *,
- const char __user * const __user *,
- const char __user * const __user *);
-extern int do_execveat(int, struct filename *,
- const char __user * const __user *,
- const char __user * const __user *,
- int);
-extern long _do_fork(unsigned long, unsigned long, unsigned long, int __user *, int __user *, unsigned long);
-extern long do_fork(unsigned long, unsigned long, unsigned long, int __user *, int __user *);
-struct task_struct *fork_idle(int);
-extern pid_t kernel_thread(int (*fn)(void *), void *arg, unsigned long flags);
-
extern void __set_task_comm(struct task_struct *tsk, const char *from, bool exec);
+
static inline void set_task_comm(struct task_struct *tsk, const char *from)
{
__set_task_comm(tsk, from, false);
}
+
extern char *get_task_comm(char *to, struct task_struct *tsk);
#ifdef CONFIG_SMP
@@ -3052,263 +1406,15 @@ void scheduler_ipi(void);
extern unsigned long wait_task_inactive(struct task_struct *, long match_state);
#else
static inline void scheduler_ipi(void) { }
-static inline unsigned long wait_task_inactive(struct task_struct *p,
- long match_state)
+static inline unsigned long wait_task_inactive(struct task_struct *p, long match_state)
{
return 1;
}
#endif
-#define tasklist_empty() \
- list_empty(&init_task.tasks)
-
-#define next_task(p) \
- list_entry_rcu((p)->tasks.next, struct task_struct, tasks)
-
-#define for_each_process(p) \
- for (p = &init_task ; (p = next_task(p)) != &init_task ; )
-
-extern bool current_is_single_threaded(void);
-
-/*
- * Careful: do_each_thread/while_each_thread is a double loop so
- * 'break' will not work as expected - use goto instead.
- */
-#define do_each_thread(g, t) \
- for (g = t = &init_task ; (g = t = next_task(g)) != &init_task ; ) do
-
-#define while_each_thread(g, t) \
- while ((t = next_thread(t)) != g)
-
-#define __for_each_thread(signal, t) \
- list_for_each_entry_rcu(t, &(signal)->thread_head, thread_node)
-
-#define for_each_thread(p, t) \
- __for_each_thread((p)->signal, t)
-
-/* Careful: this is a double loop, 'break' won't work as expected. */
-#define for_each_process_thread(p, t) \
- for_each_process(p) for_each_thread(p, t)
-
-typedef int (*proc_visitor)(struct task_struct *p, void *data);
-void walk_process_tree(struct task_struct *top, proc_visitor, void *);
-
-static inline int get_nr_threads(struct task_struct *tsk)
-{
- return tsk->signal->nr_threads;
-}
-
-static inline bool thread_group_leader(struct task_struct *p)
-{
- return p->exit_signal >= 0;
-}
-
-/* Do to the insanities of de_thread it is possible for a process
- * to have the pid of the thread group leader without actually being
- * the thread group leader. For iteration through the pids in proc
- * all we care about is that we have a task with the appropriate
- * pid, we don't actually care if we have the right task.
- */
-static inline bool has_group_leader_pid(struct task_struct *p)
-{
- return task_pid(p) == p->signal->leader_pid;
-}
-
-static inline
-bool same_thread_group(struct task_struct *p1, struct task_struct *p2)
-{
- return p1->signal == p2->signal;
-}
-
-static inline struct task_struct *next_thread(const struct task_struct *p)
-{
- return list_entry_rcu(p->thread_group.next,
- struct task_struct, thread_group);
-}
-
-static inline int thread_group_empty(struct task_struct *p)
-{
- return list_empty(&p->thread_group);
-}
-
-#define delay_group_leader(p) \
- (thread_group_leader(p) && !thread_group_empty(p))
-
-/*
- * Protects ->fs, ->files, ->mm, ->group_info, ->comm, keyring
- * subscriptions and synchronises with wait4(). Also used in procfs. Also
- * pins the final release of task.io_context. Also protects ->cpuset and
- * ->cgroup.subsys[]. And ->vfork_done.
- *
- * Nests both inside and outside of read_lock(&tasklist_lock).
- * It must not be nested with write_lock_irq(&tasklist_lock),
- * neither inside nor outside.
- */
-static inline void task_lock(struct task_struct *p)
-{
- spin_lock(&p->alloc_lock);
-}
-
-static inline void task_unlock(struct task_struct *p)
-{
- spin_unlock(&p->alloc_lock);
-}
-
-extern struct sighand_struct *__lock_task_sighand(struct task_struct *tsk,
- unsigned long *flags);
-
-static inline struct sighand_struct *lock_task_sighand(struct task_struct *tsk,
- unsigned long *flags)
-{
- struct sighand_struct *ret;
-
- ret = __lock_task_sighand(tsk, flags);
- (void)__cond_lock(&tsk->sighand->siglock, ret);
- return ret;
-}
-
-static inline void unlock_task_sighand(struct task_struct *tsk,
- unsigned long *flags)
-{
- spin_unlock_irqrestore(&tsk->sighand->siglock, *flags);
-}
-
-/**
- * threadgroup_change_begin - mark the beginning of changes to a threadgroup
- * @tsk: task causing the changes
- *
- * All operations which modify a threadgroup - a new thread joining the
- * group, death of a member thread (the assertion of PF_EXITING) and
- * exec(2) dethreading the process and replacing the leader - are wrapped
- * by threadgroup_change_{begin|end}(). This is to provide a place which
- * subsystems needing threadgroup stability can hook into for
- * synchronization.
- */
-static inline void threadgroup_change_begin(struct task_struct *tsk)
-{
- might_sleep();
- cgroup_threadgroup_change_begin(tsk);
-}
-
-/**
- * threadgroup_change_end - mark the end of changes to a threadgroup
- * @tsk: task causing the changes
- *
- * See threadgroup_change_begin().
- */
-static inline void threadgroup_change_end(struct task_struct *tsk)
-{
- cgroup_threadgroup_change_end(tsk);
-}
-
-#ifdef CONFIG_THREAD_INFO_IN_TASK
-
-static inline struct thread_info *task_thread_info(struct task_struct *task)
-{
- return &task->thread_info;
-}
-
/*
- * When accessing the stack of a non-current task that might exit, use
- * try_get_task_stack() instead. task_stack_page will return a pointer
- * that could get freed out from under you.
- */
-static inline void *task_stack_page(const struct task_struct *task)
-{
- return task->stack;
-}
-
-#define setup_thread_stack(new,old) do { } while(0)
-
-static inline unsigned long *end_of_stack(const struct task_struct *task)
-{
- return task->stack;
-}
-
-#elif !defined(__HAVE_THREAD_FUNCTIONS)
-
-#define task_thread_info(task) ((struct thread_info *)(task)->stack)
-#define task_stack_page(task) ((void *)(task)->stack)
-
-static inline void setup_thread_stack(struct task_struct *p, struct task_struct *org)
-{
- *task_thread_info(p) = *task_thread_info(org);
- task_thread_info(p)->task = p;
-}
-
-/*
- * Return the address of the last usable long on the stack.
- *
- * When the stack grows down, this is just above the thread
- * info struct. Going any lower will corrupt the threadinfo.
- *
- * When the stack grows up, this is the highest address.
- * Beyond that position, we corrupt data on the next page.
- */
-static inline unsigned long *end_of_stack(struct task_struct *p)
-{
-#ifdef CONFIG_STACK_GROWSUP
- return (unsigned long *)((unsigned long)task_thread_info(p) + THREAD_SIZE) - 1;
-#else
- return (unsigned long *)(task_thread_info(p) + 1);
-#endif
-}
-
-#endif
-
-#ifdef CONFIG_THREAD_INFO_IN_TASK
-static inline void *try_get_task_stack(struct task_struct *tsk)
-{
- return atomic_inc_not_zero(&tsk->stack_refcount) ?
- task_stack_page(tsk) : NULL;
-}
-
-extern void put_task_stack(struct task_struct *tsk);
-#else
-static inline void *try_get_task_stack(struct task_struct *tsk)
-{
- return task_stack_page(tsk);
-}
-
-static inline void put_task_stack(struct task_struct *tsk) {}
-#endif
-
-#define task_stack_end_corrupted(task) \
- (*(end_of_stack(task)) != STACK_END_MAGIC)
-
-static inline int object_is_on_stack(void *obj)
-{
- void *stack = task_stack_page(current);
-
- return (obj >= stack) && (obj < (stack + THREAD_SIZE));
-}
-
-extern void thread_stack_cache_init(void);
-
-#ifdef CONFIG_DEBUG_STACK_USAGE
-static inline unsigned long stack_not_used(struct task_struct *p)
-{
- unsigned long *n = end_of_stack(p);
-
- do { /* Skip over canary */
-# ifdef CONFIG_STACK_GROWSUP
- n--;
-# else
- n++;
-# endif
- } while (!*n);
-
-# ifdef CONFIG_STACK_GROWSUP
- return (unsigned long)end_of_stack(p) - (unsigned long)n;
-# else
- return (unsigned long)n - (unsigned long)end_of_stack(p);
-# endif
-}
-#endif
-extern void set_task_stack_end_magic(struct task_struct *tsk);
-
-/* set thread flags in other task's structures
- * - see asm/thread_info.h for TIF_xxxx flags available
+ * Set thread flags in other task's structures.
+ * See asm/thread_info.h for TIF_xxxx flags available:
*/
static inline void set_tsk_thread_flag(struct task_struct *tsk, int flag)
{
@@ -3350,37 +1456,6 @@ static inline int test_tsk_need_resched(struct task_struct *tsk)
return unlikely(test_tsk_thread_flag(tsk,TIF_NEED_RESCHED));
}
-static inline int restart_syscall(void)
-{
- set_tsk_thread_flag(current, TIF_SIGPENDING);
- return -ERESTARTNOINTR;
-}
-
-static inline int signal_pending(struct task_struct *p)
-{
- return unlikely(test_tsk_thread_flag(p,TIF_SIGPENDING));
-}
-
-static inline int __fatal_signal_pending(struct task_struct *p)
-{
- return unlikely(sigismember(&p->pending.signal, SIGKILL));
-}
-
-static inline int fatal_signal_pending(struct task_struct *p)
-{
- return signal_pending(p) && __fatal_signal_pending(p);
-}
-
-static inline int signal_pending_state(long state, struct task_struct *p)
-{
- if (!(state & (TASK_INTERRUPTIBLE | TASK_WAKEKILL)))
- return 0;
- if (!signal_pending(p))
- return 0;
-
- return (state & TASK_INTERRUPTIBLE) || __fatal_signal_pending(p);
-}
-
/*
* cond_resched() and cond_resched_lock(): latency reduction via
* explicit rescheduling in places that are safe. The return
@@ -3422,15 +1497,6 @@ static inline void cond_resched_rcu(void)
#endif
}
-static inline unsigned long get_preempt_disable_ip(struct task_struct *p)
-{
-#ifdef CONFIG_DEBUG_PREEMPT
- return p->preempt_disable_ip;
-#else
- return 0;
-#endif
-}
-
/*
* Does a critical section need to be broken due to another
* task waiting?: (technically does not depend on CONFIG_PREEMPT,
@@ -3445,114 +1511,12 @@ static inline int spin_needbreak(spinlock_t *lock)
#endif
}
-/*
- * Idle thread specific functions to determine the need_resched
- * polling state.
- */
-#ifdef TIF_POLLING_NRFLAG
-static inline int tsk_is_polling(struct task_struct *p)
-{
- return test_tsk_thread_flag(p, TIF_POLLING_NRFLAG);
-}
-
-static inline void __current_set_polling(void)
-{
- set_thread_flag(TIF_POLLING_NRFLAG);
-}
-
-static inline bool __must_check current_set_polling_and_test(void)
-{
- __current_set_polling();
-
- /*
- * Polling state must be visible before we test NEED_RESCHED,
- * paired by resched_curr()
- */
- smp_mb__after_atomic();
-
- return unlikely(tif_need_resched());
-}
-
-static inline void __current_clr_polling(void)
-{
- clear_thread_flag(TIF_POLLING_NRFLAG);
-}
-
-static inline bool __must_check current_clr_polling_and_test(void)
-{
- __current_clr_polling();
-
- /*
- * Polling state must be visible before we test NEED_RESCHED,
- * paired by resched_curr()
- */
- smp_mb__after_atomic();
-
- return unlikely(tif_need_resched());
-}
-
-#else
-static inline int tsk_is_polling(struct task_struct *p) { return 0; }
-static inline void __current_set_polling(void) { }
-static inline void __current_clr_polling(void) { }
-
-static inline bool __must_check current_set_polling_and_test(void)
-{
- return unlikely(tif_need_resched());
-}
-static inline bool __must_check current_clr_polling_and_test(void)
-{
- return unlikely(tif_need_resched());
-}
-#endif
-
-static inline void current_clr_polling(void)
-{
- __current_clr_polling();
-
- /*
- * Ensure we check TIF_NEED_RESCHED after we clear the polling bit.
- * Once the bit is cleared, we'll get IPIs with every new
- * TIF_NEED_RESCHED and the IPI handler, scheduler_ipi(), will also
- * fold.
- */
- smp_mb(); /* paired with resched_curr() */
-
- preempt_fold_need_resched();
-}
-
static __always_inline bool need_resched(void)
{
return unlikely(tif_need_resched());
}
/*
- * Thread group CPU time accounting.
- */
-void thread_group_cputime(struct task_struct *tsk, struct task_cputime *times);
-void thread_group_cputimer(struct task_struct *tsk, struct task_cputime *times);
-
-/*
- * Reevaluate whether the task has signals pending delivery.
- * Wake the task if so.
- * This is required every time the blocked sigset_t changes.
- * callers must hold sighand->siglock.
- */
-extern void recalc_sigpending_and_wake(struct task_struct *t);
-extern void recalc_sigpending(void);
-
-extern void signal_wake_up_state(struct task_struct *t, unsigned int state);
-
-static inline void signal_wake_up(struct task_struct *t, bool resume)
-{
- signal_wake_up_state(t, resume ? TASK_WAKEKILL : 0);
-}
-static inline void ptrace_signal_wake_up(struct task_struct *t, bool resume)
-{
- signal_wake_up_state(t, resume ? __TASK_TRACED : 0);
-}
-
-/*
* Wrappers for p->thread_info->cpu access. No-op on UP.
*/
#ifdef CONFIG_SMP
@@ -3566,11 +1530,6 @@ static inline unsigned int task_cpu(const struct task_struct *p)
#endif
}
-static inline int task_node(const struct task_struct *p)
-{
- return cpu_to_node(task_cpu(p));
-}
-
extern void set_task_cpu(struct task_struct *p, unsigned int cpu);
#else
@@ -3601,100 +1560,8 @@ static inline void set_task_cpu(struct task_struct *p, unsigned int cpu)
extern long sched_setaffinity(pid_t pid, const struct cpumask *new_mask);
extern long sched_getaffinity(pid_t pid, struct cpumask *mask);
-#ifdef CONFIG_CGROUP_SCHED
-extern struct task_group root_task_group;
-#endif /* CONFIG_CGROUP_SCHED */
-
-extern int task_can_switch_user(struct user_struct *up,
- struct task_struct *tsk);
-
-#ifdef CONFIG_TASK_XACCT
-static inline void add_rchar(struct task_struct *tsk, ssize_t amt)
-{
- tsk->ioac.rchar += amt;
-}
-
-static inline void add_wchar(struct task_struct *tsk, ssize_t amt)
-{
- tsk->ioac.wchar += amt;
-}
-
-static inline void inc_syscr(struct task_struct *tsk)
-{
- tsk->ioac.syscr++;
-}
-
-static inline void inc_syscw(struct task_struct *tsk)
-{
- tsk->ioac.syscw++;
-}
-#else
-static inline void add_rchar(struct task_struct *tsk, ssize_t amt)
-{
-}
-
-static inline void add_wchar(struct task_struct *tsk, ssize_t amt)
-{
-}
-
-static inline void inc_syscr(struct task_struct *tsk)
-{
-}
-
-static inline void inc_syscw(struct task_struct *tsk)
-{
-}
-#endif
-
#ifndef TASK_SIZE_OF
#define TASK_SIZE_OF(tsk) TASK_SIZE
#endif
-#ifdef CONFIG_MEMCG
-extern void mm_update_next_owner(struct mm_struct *mm);
-#else
-static inline void mm_update_next_owner(struct mm_struct *mm)
-{
-}
-#endif /* CONFIG_MEMCG */
-
-static inline unsigned long task_rlimit(const struct task_struct *tsk,
- unsigned int limit)
-{
- return READ_ONCE(tsk->signal->rlim[limit].rlim_cur);
-}
-
-static inline unsigned long task_rlimit_max(const struct task_struct *tsk,
- unsigned int limit)
-{
- return READ_ONCE(tsk->signal->rlim[limit].rlim_max);
-}
-
-static inline unsigned long rlimit(unsigned int limit)
-{
- return task_rlimit(current, limit);
-}
-
-static inline unsigned long rlimit_max(unsigned int limit)
-{
- return task_rlimit_max(current, limit);
-}
-
-#define SCHED_CPUFREQ_RT (1U << 0)
-#define SCHED_CPUFREQ_DL (1U << 1)
-#define SCHED_CPUFREQ_IOWAIT (1U << 2)
-
-#define SCHED_CPUFREQ_RT_DL (SCHED_CPUFREQ_RT | SCHED_CPUFREQ_DL)
-
-#ifdef CONFIG_CPU_FREQ
-struct update_util_data {
- void (*func)(struct update_util_data *data, u64 time, unsigned int flags);
-};
-
-void cpufreq_add_update_util_hook(int cpu, struct update_util_data *data,
- void (*func)(struct update_util_data *data, u64 time,
- unsigned int flags));
-void cpufreq_remove_update_util_hook(int cpu);
-#endif /* CONFIG_CPU_FREQ */
-
#endif
diff --git a/include/linux/sched/autogroup.h b/include/linux/sched/autogroup.h
new file mode 100644
index 000000000000..55cd496df884
--- /dev/null
+++ b/include/linux/sched/autogroup.h
@@ -0,0 +1,31 @@
+#ifndef _LINUX_SCHED_AUTOGROUP_H
+#define _LINUX_SCHED_AUTOGROUP_H
+
+struct signal_struct;
+struct task_struct;
+struct task_group;
+struct seq_file;
+
+#ifdef CONFIG_SCHED_AUTOGROUP
+extern void sched_autogroup_create_attach(struct task_struct *p);
+extern void sched_autogroup_detach(struct task_struct *p);
+extern void sched_autogroup_fork(struct signal_struct *sig);
+extern void sched_autogroup_exit(struct signal_struct *sig);
+extern void sched_autogroup_exit_task(struct task_struct *p);
+#ifdef CONFIG_PROC_FS
+extern void proc_sched_autogroup_show_task(struct task_struct *p, struct seq_file *m);
+extern int proc_sched_autogroup_set_nice(struct task_struct *p, int nice);
+#endif
+#else
+static inline void sched_autogroup_create_attach(struct task_struct *p) { }
+static inline void sched_autogroup_detach(struct task_struct *p) { }
+static inline void sched_autogroup_fork(struct signal_struct *sig) { }
+static inline void sched_autogroup_exit(struct signal_struct *sig) { }
+static inline void sched_autogroup_exit_task(struct task_struct *p) { }
+#endif
+
+#ifdef CONFIG_CGROUP_SCHED
+extern struct task_group root_task_group;
+#endif /* CONFIG_CGROUP_SCHED */
+
+#endif /* _LINUX_SCHED_AUTOGROUP_H */
diff --git a/include/linux/sched/clock.h b/include/linux/sched/clock.h
new file mode 100644
index 000000000000..4a68c6791207
--- /dev/null
+++ b/include/linux/sched/clock.h
@@ -0,0 +1,104 @@
+#ifndef _LINUX_SCHED_CLOCK_H
+#define _LINUX_SCHED_CLOCK_H
+
+#include <linux/smp.h>
+
+/*
+ * Do not use outside of architecture code which knows its limitations.
+ *
+ * sched_clock() has no promise of monotonicity or bounded drift between
+ * CPUs, use (which you should not) requires disabling IRQs.
+ *
+ * Please use one of the three interfaces below.
+ */
+extern unsigned long long notrace sched_clock(void);
+
+/*
+ * See the comment in kernel/sched/clock.c
+ */
+extern u64 running_clock(void);
+extern u64 sched_clock_cpu(int cpu);
+
+
+extern void sched_clock_init(void);
+
+#ifndef CONFIG_HAVE_UNSTABLE_SCHED_CLOCK
+static inline void sched_clock_init_late(void)
+{
+}
+
+static inline void sched_clock_tick(void)
+{
+}
+
+static inline void clear_sched_clock_stable(void)
+{
+}
+
+static inline void sched_clock_idle_sleep_event(void)
+{
+}
+
+static inline void sched_clock_idle_wakeup_event(u64 delta_ns)
+{
+}
+
+static inline u64 cpu_clock(int cpu)
+{
+ return sched_clock();
+}
+
+static inline u64 local_clock(void)
+{
+ return sched_clock();
+}
+#else
+extern void sched_clock_init_late(void);
+/*
+ * Architectures can set this to 1 if they have specified
+ * CONFIG_HAVE_UNSTABLE_SCHED_CLOCK in their arch Kconfig,
+ * but then during bootup it turns out that sched_clock()
+ * is reliable after all:
+ */
+extern int sched_clock_stable(void);
+extern void clear_sched_clock_stable(void);
+
+extern void sched_clock_tick(void);
+extern void sched_clock_idle_sleep_event(void);
+extern void sched_clock_idle_wakeup_event(u64 delta_ns);
+
+/*
+ * As outlined in clock.c, provides a fast, high resolution, nanosecond
+ * time source that is monotonic per cpu argument and has bounded drift
+ * between cpus.
+ *
+ * ######################### BIG FAT WARNING ##########################
+ * # when comparing cpu_clock(i) to cpu_clock(j) for i != j, time can #
+ * # go backwards !! #
+ * ####################################################################
+ */
+static inline u64 cpu_clock(int cpu)
+{
+ return sched_clock_cpu(cpu);
+}
+
+static inline u64 local_clock(void)
+{
+ return sched_clock_cpu(raw_smp_processor_id());
+}
+#endif
+
+#ifdef CONFIG_IRQ_TIME_ACCOUNTING
+/*
+ * An i/f to runtime opt-in for irq time accounting based off of sched_clock.
+ * The reason for this explicit opt-in is not to have perf penalty with
+ * slow sched_clocks.
+ */
+extern void enable_sched_clock_irqtime(void);
+extern void disable_sched_clock_irqtime(void);
+#else
+static inline void enable_sched_clock_irqtime(void) {}
+static inline void disable_sched_clock_irqtime(void) {}
+#endif
+
+#endif /* _LINUX_SCHED_CLOCK_H */
diff --git a/include/linux/sched/coredump.h b/include/linux/sched/coredump.h
new file mode 100644
index 000000000000..69eedcef8f03
--- /dev/null
+++ b/include/linux/sched/coredump.h
@@ -0,0 +1,74 @@
+#ifndef _LINUX_SCHED_COREDUMP_H
+#define _LINUX_SCHED_COREDUMP_H
+
+#include <linux/mm_types.h>
+
+#define SUID_DUMP_DISABLE 0 /* No setuid dumping */
+#define SUID_DUMP_USER 1 /* Dump as user of process */
+#define SUID_DUMP_ROOT 2 /* Dump as root */
+
+/* mm flags */
+
+/* for SUID_DUMP_* above */
+#define MMF_DUMPABLE_BITS 2
+#define MMF_DUMPABLE_MASK ((1 << MMF_DUMPABLE_BITS) - 1)
+
+extern void set_dumpable(struct mm_struct *mm, int value);
+/*
+ * This returns the actual value of the suid_dumpable flag. For things
+ * that are using this for checking for privilege transitions, it must
+ * test against SUID_DUMP_USER rather than treating it as a boolean
+ * value.
+ */
+static inline int __get_dumpable(unsigned long mm_flags)
+{
+ return mm_flags & MMF_DUMPABLE_MASK;
+}
+
+static inline int get_dumpable(struct mm_struct *mm)
+{
+ return __get_dumpable(mm->flags);
+}
+
+/* coredump filter bits */
+#define MMF_DUMP_ANON_PRIVATE 2
+#define MMF_DUMP_ANON_SHARED 3
+#define MMF_DUMP_MAPPED_PRIVATE 4
+#define MMF_DUMP_MAPPED_SHARED 5
+#define MMF_DUMP_ELF_HEADERS 6
+#define MMF_DUMP_HUGETLB_PRIVATE 7
+#define MMF_DUMP_HUGETLB_SHARED 8
+#define MMF_DUMP_DAX_PRIVATE 9
+#define MMF_DUMP_DAX_SHARED 10
+
+#define MMF_DUMP_FILTER_SHIFT MMF_DUMPABLE_BITS
+#define MMF_DUMP_FILTER_BITS 9
+#define MMF_DUMP_FILTER_MASK \
+ (((1 << MMF_DUMP_FILTER_BITS) - 1) << MMF_DUMP_FILTER_SHIFT)
+#define MMF_DUMP_FILTER_DEFAULT \
+ ((1 << MMF_DUMP_ANON_PRIVATE) | (1 << MMF_DUMP_ANON_SHARED) |\
+ (1 << MMF_DUMP_HUGETLB_PRIVATE) | MMF_DUMP_MASK_DEFAULT_ELF)
+
+#ifdef CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS
+# define MMF_DUMP_MASK_DEFAULT_ELF (1 << MMF_DUMP_ELF_HEADERS)
+#else
+# define MMF_DUMP_MASK_DEFAULT_ELF 0
+#endif
+ /* leave room for more dump flags */
+#define MMF_VM_MERGEABLE 16 /* KSM may merge identical pages */
+#define MMF_VM_HUGEPAGE 17 /* set when VM_HUGEPAGE is set on vma */
+/*
+ * This one-shot flag is dropped due to necessity of changing exe once again
+ * on NFS restore
+ */
+//#define MMF_EXE_FILE_CHANGED 18 /* see prctl_set_mm_exe_file() */
+
+#define MMF_HAS_UPROBES 19 /* has uprobes */
+#define MMF_RECALC_UPROBES 20 /* MMF_HAS_UPROBES can be wrong */
+#define MMF_OOM_SKIP 21 /* mm is of no interest for the OOM killer */
+#define MMF_UNSTABLE 22 /* mm is unstable for copy_from_user */
+#define MMF_HUGE_ZERO_PAGE 23 /* mm has ever used the global huge zero page */
+
+#define MMF_INIT_MASK (MMF_DUMPABLE_MASK | MMF_DUMP_FILTER_MASK)
+
+#endif /* _LINUX_SCHED_COREDUMP_H */
diff --git a/include/linux/sched/cpufreq.h b/include/linux/sched/cpufreq.h
new file mode 100644
index 000000000000..d2be2ccbb372
--- /dev/null
+++ b/include/linux/sched/cpufreq.h
@@ -0,0 +1,27 @@
+#ifndef _LINUX_SCHED_CPUFREQ_H
+#define _LINUX_SCHED_CPUFREQ_H
+
+#include <linux/types.h>
+
+/*
+ * Interface between cpufreq drivers and the scheduler:
+ */
+
+#define SCHED_CPUFREQ_RT (1U << 0)
+#define SCHED_CPUFREQ_DL (1U << 1)
+#define SCHED_CPUFREQ_IOWAIT (1U << 2)
+
+#define SCHED_CPUFREQ_RT_DL (SCHED_CPUFREQ_RT | SCHED_CPUFREQ_DL)
+
+#ifdef CONFIG_CPU_FREQ
+struct update_util_data {
+ void (*func)(struct update_util_data *data, u64 time, unsigned int flags);
+};
+
+void cpufreq_add_update_util_hook(int cpu, struct update_util_data *data,
+ void (*func)(struct update_util_data *data, u64 time,
+ unsigned int flags));
+void cpufreq_remove_update_util_hook(int cpu);
+#endif /* CONFIG_CPU_FREQ */
+
+#endif /* _LINUX_SCHED_CPUFREQ_H */
diff --git a/include/linux/sched/cputime.h b/include/linux/sched/cputime.h
new file mode 100644
index 000000000000..4c5b9735c1ae
--- /dev/null
+++ b/include/linux/sched/cputime.h
@@ -0,0 +1,187 @@
+#ifndef _LINUX_SCHED_CPUTIME_H
+#define _LINUX_SCHED_CPUTIME_H
+
+#include <linux/sched/signal.h>
+
+/*
+ * cputime accounting APIs:
+ */
+
+#ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE
+#include <asm/cputime.h>
+
+#ifndef cputime_to_nsecs
+# define cputime_to_nsecs(__ct) \
+ (cputime_to_usecs(__ct) * NSEC_PER_USEC)
+#endif
+#endif /* CONFIG_VIRT_CPU_ACCOUNTING_NATIVE */
+
+#ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN
+extern void task_cputime(struct task_struct *t,
+ u64 *utime, u64 *stime);
+extern u64 task_gtime(struct task_struct *t);
+#else
+static inline void task_cputime(struct task_struct *t,
+ u64 *utime, u64 *stime)
+{
+ *utime = t->utime;
+ *stime = t->stime;
+}
+
+static inline u64 task_gtime(struct task_struct *t)
+{
+ return t->gtime;
+}
+#endif
+
+#ifdef CONFIG_ARCH_HAS_SCALED_CPUTIME
+static inline void task_cputime_scaled(struct task_struct *t,
+ u64 *utimescaled,
+ u64 *stimescaled)
+{
+ *utimescaled = t->utimescaled;
+ *stimescaled = t->stimescaled;
+}
+#else
+static inline void task_cputime_scaled(struct task_struct *t,
+ u64 *utimescaled,
+ u64 *stimescaled)
+{
+ task_cputime(t, utimescaled, stimescaled);
+}
+#endif
+
+extern void task_cputime_adjusted(struct task_struct *p, u64 *ut, u64 *st);
+extern void thread_group_cputime_adjusted(struct task_struct *p, u64 *ut, u64 *st);
+
+
+/*
+ * Thread group CPU time accounting.
+ */
+void thread_group_cputime(struct task_struct *tsk, struct task_cputime *times);
+void thread_group_cputimer(struct task_struct *tsk, struct task_cputime *times);
+
+
+/*
+ * The following are functions that support scheduler-internal time accounting.
+ * These functions are generally called at the timer tick. None of this depends
+ * on CONFIG_SCHEDSTATS.
+ */
+
+/**
+ * get_running_cputimer - return &tsk->signal->cputimer if cputimer is running
+ *
+ * @tsk: Pointer to target task.
+ */
+#ifdef CONFIG_POSIX_TIMERS
+static inline
+struct thread_group_cputimer *get_running_cputimer(struct task_struct *tsk)
+{
+ struct thread_group_cputimer *cputimer = &tsk->signal->cputimer;
+
+ /* Check if cputimer isn't running. This is accessed without locking. */
+ if (!READ_ONCE(cputimer->running))
+ return NULL;
+
+ /*
+ * After we flush the task's sum_exec_runtime to sig->sum_sched_runtime
+ * in __exit_signal(), we won't account to the signal struct further
+ * cputime consumed by that task, even though the task can still be
+ * ticking after __exit_signal().
+ *
+ * In order to keep a consistent behaviour between thread group cputime
+ * and thread group cputimer accounting, lets also ignore the cputime
+ * elapsing after __exit_signal() in any thread group timer running.
+ *
+ * This makes sure that POSIX CPU clocks and timers are synchronized, so
+ * that a POSIX CPU timer won't expire while the corresponding POSIX CPU
+ * clock delta is behind the expiring timer value.
+ */
+ if (unlikely(!tsk->sighand))
+ return NULL;
+
+ return cputimer;
+}
+#else
+static inline
+struct thread_group_cputimer *get_running_cputimer(struct task_struct *tsk)
+{
+ return NULL;
+}
+#endif
+
+/**
+ * account_group_user_time - Maintain utime for a thread group.
+ *
+ * @tsk: Pointer to task structure.
+ * @cputime: Time value by which to increment the utime field of the
+ * thread_group_cputime structure.
+ *
+ * If thread group time is being maintained, get the structure for the
+ * running CPU and update the utime field there.
+ */
+static inline void account_group_user_time(struct task_struct *tsk,
+ u64 cputime)
+{
+ struct thread_group_cputimer *cputimer = get_running_cputimer(tsk);
+
+ if (!cputimer)
+ return;
+
+ atomic64_add(cputime, &cputimer->cputime_atomic.utime);
+}
+
+/**
+ * account_group_system_time - Maintain stime for a thread group.
+ *
+ * @tsk: Pointer to task structure.
+ * @cputime: Time value by which to increment the stime field of the
+ * thread_group_cputime structure.
+ *
+ * If thread group time is being maintained, get the structure for the
+ * running CPU and update the stime field there.
+ */
+static inline void account_group_system_time(struct task_struct *tsk,
+ u64 cputime)
+{
+ struct thread_group_cputimer *cputimer = get_running_cputimer(tsk);
+
+ if (!cputimer)
+ return;
+
+ atomic64_add(cputime, &cputimer->cputime_atomic.stime);
+}
+
+/**
+ * account_group_exec_runtime - Maintain exec runtime for a thread group.
+ *
+ * @tsk: Pointer to task structure.
+ * @ns: Time value by which to increment the sum_exec_runtime field
+ * of the thread_group_cputime structure.
+ *
+ * If thread group time is being maintained, get the structure for the
+ * running CPU and update the sum_exec_runtime field there.
+ */
+static inline void account_group_exec_runtime(struct task_struct *tsk,
+ unsigned long long ns)
+{
+ struct thread_group_cputimer *cputimer = get_running_cputimer(tsk);
+
+ if (!cputimer)
+ return;
+
+ atomic64_add(ns, &cputimer->cputime_atomic.sum_exec_runtime);
+}
+
+static inline void prev_cputime_init(struct prev_cputime *prev)
+{
+#ifndef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE
+ prev->utime = prev->stime = 0;
+ raw_spin_lock_init(&prev->lock);
+#endif
+}
+
+extern unsigned long long
+task_sched_runtime(struct task_struct *task);
+
+#endif /* _LINUX_SCHED_CPUTIME_H */
diff --git a/include/linux/sched/deadline.h b/include/linux/sched/deadline.h
index 9089a2ae913d..975be862e083 100644
--- a/include/linux/sched/deadline.h
+++ b/include/linux/sched/deadline.h
@@ -1,5 +1,7 @@
-#ifndef _SCHED_DEADLINE_H
-#define _SCHED_DEADLINE_H
+#ifndef _LINUX_SCHED_DEADLINE_H
+#define _LINUX_SCHED_DEADLINE_H
+
+#include <linux/sched.h>
/*
* SCHED_DEADLINE tasks has negative priorities, reflecting
@@ -26,4 +28,4 @@ static inline bool dl_time_before(u64 a, u64 b)
return (s64)(a - b) < 0;
}
-#endif /* _SCHED_DEADLINE_H */
+#endif /* _LINUX_SCHED_DEADLINE_H */
diff --git a/include/linux/sched/debug.h b/include/linux/sched/debug.h
new file mode 100644
index 000000000000..e0eaee54c5a4
--- /dev/null
+++ b/include/linux/sched/debug.h
@@ -0,0 +1,50 @@
+#ifndef _LINUX_SCHED_DEBUG_H
+#define _LINUX_SCHED_DEBUG_H
+
+/*
+ * Various scheduler/task debugging interfaces:
+ */
+
+struct task_struct;
+
+extern void dump_cpu_task(int cpu);
+
+/*
+ * Only dump TASK_* tasks. (0 for all tasks)
+ */
+extern void show_state_filter(unsigned long state_filter);
+
+static inline void show_state(void)
+{
+ show_state_filter(0);
+}
+
+struct pt_regs;
+
+extern void show_regs(struct pt_regs *);
+
+/*
+ * TASK is a pointer to the task whose backtrace we want to see (or NULL for current
+ * task), SP is the stack pointer of the first frame that should be shown in the back
+ * trace (or NULL if the entire call-chain of the task should be shown).
+ */
+extern void show_stack(struct task_struct *task, unsigned long *sp);
+
+extern void sched_show_task(struct task_struct *p);
+
+#ifdef CONFIG_SCHED_DEBUG
+struct seq_file;
+extern void proc_sched_show_task(struct task_struct *p, struct seq_file *m);
+extern void proc_sched_set_task(struct task_struct *p);
+#endif
+
+/* Attach to any functions which should be ignored in wchan output. */
+#define __sched __attribute__((__section__(".sched.text")))
+
+/* Linker adds these: start and end of __sched functions */
+extern char __sched_text_start[], __sched_text_end[];
+
+/* Is this address in the __sched functions? */
+extern int in_sched_functions(unsigned long addr);
+
+#endif /* _LINUX_SCHED_DEBUG_H */
diff --git a/include/linux/sched/hotplug.h b/include/linux/sched/hotplug.h
new file mode 100644
index 000000000000..752ac7e628d7
--- /dev/null
+++ b/include/linux/sched/hotplug.h
@@ -0,0 +1,24 @@
+#ifndef _LINUX_SCHED_HOTPLUG_H
+#define _LINUX_SCHED_HOTPLUG_H
+
+/*
+ * Scheduler interfaces for hotplug CPU support:
+ */
+
+extern int sched_cpu_starting(unsigned int cpu);
+extern int sched_cpu_activate(unsigned int cpu);
+extern int sched_cpu_deactivate(unsigned int cpu);
+
+#ifdef CONFIG_HOTPLUG_CPU
+extern int sched_cpu_dying(unsigned int cpu);
+#else
+# define sched_cpu_dying NULL
+#endif
+
+#ifdef CONFIG_HOTPLUG_CPU
+extern void idle_task_exit(void);
+#else
+static inline void idle_task_exit(void) {}
+#endif
+
+#endif /* _LINUX_SCHED_HOTPLUG_H */
diff --git a/include/linux/sched/idle.h b/include/linux/sched/idle.h
new file mode 100644
index 000000000000..5ca63ebad6b4
--- /dev/null
+++ b/include/linux/sched/idle.h
@@ -0,0 +1,86 @@
+#ifndef _LINUX_SCHED_IDLE_H
+#define _LINUX_SCHED_IDLE_H
+
+#include <linux/sched.h>
+
+enum cpu_idle_type {
+ CPU_IDLE,
+ CPU_NOT_IDLE,
+ CPU_NEWLY_IDLE,
+ CPU_MAX_IDLE_TYPES
+};
+
+extern void wake_up_if_idle(int cpu);
+
+/*
+ * Idle thread specific functions to determine the need_resched
+ * polling state.
+ */
+#ifdef TIF_POLLING_NRFLAG
+
+static inline void __current_set_polling(void)
+{
+ set_thread_flag(TIF_POLLING_NRFLAG);
+}
+
+static inline bool __must_check current_set_polling_and_test(void)
+{
+ __current_set_polling();
+
+ /*
+ * Polling state must be visible before we test NEED_RESCHED,
+ * paired by resched_curr()
+ */
+ smp_mb__after_atomic();
+
+ return unlikely(tif_need_resched());
+}
+
+static inline void __current_clr_polling(void)
+{
+ clear_thread_flag(TIF_POLLING_NRFLAG);
+}
+
+static inline bool __must_check current_clr_polling_and_test(void)
+{
+ __current_clr_polling();
+
+ /*
+ * Polling state must be visible before we test NEED_RESCHED,
+ * paired by resched_curr()
+ */
+ smp_mb__after_atomic();
+
+ return unlikely(tif_need_resched());
+}
+
+#else
+static inline void __current_set_polling(void) { }
+static inline void __current_clr_polling(void) { }
+
+static inline bool __must_check current_set_polling_and_test(void)
+{
+ return unlikely(tif_need_resched());
+}
+static inline bool __must_check current_clr_polling_and_test(void)
+{
+ return unlikely(tif_need_resched());
+}
+#endif
+
+static inline void current_clr_polling(void)
+{
+ __current_clr_polling();
+
+ /*
+ * Ensure we check TIF_NEED_RESCHED after we clear the polling bit.
+ * Once the bit is cleared, we'll get IPIs with every new
+ * TIF_NEED_RESCHED and the IPI handler, scheduler_ipi(), will also
+ * fold.
+ */
+ smp_mb(); /* paired with resched_curr() */
+
+ preempt_fold_need_resched();
+}
+
+#endif /* _LINUX_SCHED_IDLE_H */
diff --git a/include/linux/sched/init.h b/include/linux/sched/init.h
new file mode 100644
index 000000000000..127215045285
--- /dev/null
+++ b/include/linux/sched/init.h
@@ -0,0 +1,11 @@
+#ifndef _LINUX_SCHED_INIT_H
+#define _LINUX_SCHED_INIT_H
+
+/*
+ * Scheduler init related prototypes:
+ */
+
+extern void sched_init(void);
+extern void sched_init_smp(void);
+
+#endif /* _LINUX_SCHED_INIT_H */
diff --git a/include/linux/sched/jobctl.h b/include/linux/sched/jobctl.h
new file mode 100644
index 000000000000..016afa0fb3bb
--- /dev/null
+++ b/include/linux/sched/jobctl.h
@@ -0,0 +1,36 @@
+#ifndef _LINUX_SCHED_JOBCTL_H
+#define _LINUX_SCHED_JOBCTL_H
+
+#include <linux/types.h>
+
+struct task_struct;
+
+/*
+ * task->jobctl flags
+ */
+#define JOBCTL_STOP_SIGMASK 0xffff /* signr of the last group stop */
+
+#define JOBCTL_STOP_DEQUEUED_BIT 16 /* stop signal dequeued */
+#define JOBCTL_STOP_PENDING_BIT 17 /* task should stop for group stop */
+#define JOBCTL_STOP_CONSUME_BIT 18 /* consume group stop count */
+#define JOBCTL_TRAP_STOP_BIT 19 /* trap for STOP */
+#define JOBCTL_TRAP_NOTIFY_BIT 20 /* trap for NOTIFY */
+#define JOBCTL_TRAPPING_BIT 21 /* switching to TRACED */
+#define JOBCTL_LISTENING_BIT 22 /* ptracer is listening for events */
+
+#define JOBCTL_STOP_DEQUEUED (1UL << JOBCTL_STOP_DEQUEUED_BIT)
+#define JOBCTL_STOP_PENDING (1UL << JOBCTL_STOP_PENDING_BIT)
+#define JOBCTL_STOP_CONSUME (1UL << JOBCTL_STOP_CONSUME_BIT)
+#define JOBCTL_TRAP_STOP (1UL << JOBCTL_TRAP_STOP_BIT)
+#define JOBCTL_TRAP_NOTIFY (1UL << JOBCTL_TRAP_NOTIFY_BIT)
+#define JOBCTL_TRAPPING (1UL << JOBCTL_TRAPPING_BIT)
+#define JOBCTL_LISTENING (1UL << JOBCTL_LISTENING_BIT)
+
+#define JOBCTL_TRAP_MASK (JOBCTL_TRAP_STOP | JOBCTL_TRAP_NOTIFY)
+#define JOBCTL_PENDING_MASK (JOBCTL_STOP_PENDING | JOBCTL_TRAP_MASK)
+
+extern bool task_set_jobctl_pending(struct task_struct *task, unsigned long mask);
+extern void task_clear_jobctl_trapping(struct task_struct *task);
+extern void task_clear_jobctl_pending(struct task_struct *task, unsigned long mask);
+
+#endif /* _LINUX_SCHED_JOBCTL_H */
diff --git a/include/linux/sched/loadavg.h b/include/linux/sched/loadavg.h
new file mode 100644
index 000000000000..4264bc6b2c27
--- /dev/null
+++ b/include/linux/sched/loadavg.h
@@ -0,0 +1,31 @@
+#ifndef _LINUX_SCHED_LOADAVG_H
+#define _LINUX_SCHED_LOADAVG_H
+
+/*
+ * These are the constant used to fake the fixed-point load-average
+ * counting. Some notes:
+ * - 11 bit fractions expand to 22 bits by the multiplies: this gives
+ * a load-average precision of 10 bits integer + 11 bits fractional
+ * - if you want to count load-averages more often, you need more
+ * precision, or rounding will get you. With 2-second counting freq,
+ * the EXP_n values would be 1981, 2034 and 2043 if still using only
+ * 11 bit fractions.
+ */
+extern unsigned long avenrun[]; /* Load averages */
+extern void get_avenrun(unsigned long *loads, unsigned long offset, int shift);
+
+#define FSHIFT 11 /* nr of bits of precision */
+#define FIXED_1 (1<<FSHIFT) /* 1.0 as fixed-point */
+#define LOAD_FREQ (5*HZ+1) /* 5 sec intervals */
+#define EXP_1 1884 /* 1/exp(5sec/1min) as fixed-point */
+#define EXP_5 2014 /* 1/exp(5sec/5min) */
+#define EXP_15 2037 /* 1/exp(5sec/15min) */
+
+#define CALC_LOAD(load,exp,n) \
+ load *= exp; \
+ load += n*(FIXED_1-exp); \
+ load >>= FSHIFT;
+
+extern void calc_global_load(unsigned long ticks);
+
+#endif /* _LINUX_SCHED_LOADAVG_H */
diff --git a/include/linux/sched/mm.h b/include/linux/sched/mm.h
new file mode 100644
index 000000000000..830953ebb391
--- /dev/null
+++ b/include/linux/sched/mm.h
@@ -0,0 +1,174 @@
+#ifndef _LINUX_SCHED_MM_H
+#define _LINUX_SCHED_MM_H
+
+#include <linux/kernel.h>
+#include <linux/atomic.h>
+#include <linux/sched.h>
+#include <linux/mm_types.h>
+#include <linux/gfp.h>
+
+/*
+ * Routines for handling mm_structs
+ */
+extern struct mm_struct * mm_alloc(void);
+
+/**
+ * mmgrab() - Pin a &struct mm_struct.
+ * @mm: The &struct mm_struct to pin.
+ *
+ * Make sure that @mm will not get freed even after the owning task
+ * exits. This doesn't guarantee that the associated address space
+ * will still exist later on and mmget_not_zero() has to be used before
+ * accessing it.
+ *
+ * This is a preferred way to to pin @mm for a longer/unbounded amount
+ * of time.
+ *
+ * Use mmdrop() to release the reference acquired by mmgrab().
+ *
+ * See also <Documentation/vm/active_mm.txt> for an in-depth explanation
+ * of &mm_struct.mm_count vs &mm_struct.mm_users.
+ */
+static inline void mmgrab(struct mm_struct *mm)
+{
+ atomic_inc(&mm->mm_count);
+}
+
+/* mmdrop drops the mm and the page tables */
+extern void __mmdrop(struct mm_struct *);
+static inline void mmdrop(struct mm_struct *mm)
+{
+ if (unlikely(atomic_dec_and_test(&mm->mm_count)))
+ __mmdrop(mm);
+}
+
+static inline void mmdrop_async_fn(struct work_struct *work)
+{
+ struct mm_struct *mm = container_of(work, struct mm_struct, async_put_work);
+ __mmdrop(mm);
+}
+
+static inline void mmdrop_async(struct mm_struct *mm)
+{
+ if (unlikely(atomic_dec_and_test(&mm->mm_count))) {
+ INIT_WORK(&mm->async_put_work, mmdrop_async_fn);
+ schedule_work(&mm->async_put_work);
+ }
+}
+
+/**
+ * mmget() - Pin the address space associated with a &struct mm_struct.
+ * @mm: The address space to pin.
+ *
+ * Make sure that the address space of the given &struct mm_struct doesn't
+ * go away. This does not protect against parts of the address space being
+ * modified or freed, however.
+ *
+ * Never use this function to pin this address space for an
+ * unbounded/indefinite amount of time.
+ *
+ * Use mmput() to release the reference acquired by mmget().
+ *
+ * See also <Documentation/vm/active_mm.txt> for an in-depth explanation
+ * of &mm_struct.mm_count vs &mm_struct.mm_users.
+ */
+static inline void mmget(struct mm_struct *mm)
+{
+ atomic_inc(&mm->mm_users);
+}
+
+static inline bool mmget_not_zero(struct mm_struct *mm)
+{
+ return atomic_inc_not_zero(&mm->mm_users);
+}
+
+/* mmput gets rid of the mappings and all user-space */
+extern void mmput(struct mm_struct *);
+#ifdef CONFIG_MMU
+/* same as above but performs the slow path from the async context. Can
+ * be called from the atomic context as well
+ */
+extern void mmput_async(struct mm_struct *);
+#endif
+
+/* Grab a reference to a task's mm, if it is not already going away */
+extern struct mm_struct *get_task_mm(struct task_struct *task);
+/*
+ * Grab a reference to a task's mm, if it is not already going away
+ * and ptrace_may_access with the mode parameter passed to it
+ * succeeds.
+ */
+extern struct mm_struct *mm_access(struct task_struct *task, unsigned int mode);
+/* Remove the current tasks stale references to the old mm_struct */
+extern void mm_release(struct task_struct *, struct mm_struct *);
+
+#ifdef CONFIG_MEMCG
+extern void mm_update_next_owner(struct mm_struct *mm);
+#else
+static inline void mm_update_next_owner(struct mm_struct *mm)
+{
+}
+#endif /* CONFIG_MEMCG */
+
+#ifdef CONFIG_MMU
+extern void arch_pick_mmap_layout(struct mm_struct *mm);
+extern unsigned long
+arch_get_unmapped_area(struct file *, unsigned long, unsigned long,
+ unsigned long, unsigned long);
+extern unsigned long
+arch_get_unmapped_area_topdown(struct file *filp, unsigned long addr,
+ unsigned long len, unsigned long pgoff,
+ unsigned long flags);
+#else
+static inline void arch_pick_mmap_layout(struct mm_struct *mm) {}
+#endif
+
+static inline bool in_vfork(struct task_struct *tsk)
+{
+ bool ret;
+
+ /*
+ * need RCU to access ->real_parent if CLONE_VM was used along with
+ * CLONE_PARENT.
+ *
+ * We check real_parent->mm == tsk->mm because CLONE_VFORK does not
+ * imply CLONE_VM
+ *
+ * CLONE_VFORK can be used with CLONE_PARENT/CLONE_THREAD and thus
+ * ->real_parent is not necessarily the task doing vfork(), so in
+ * theory we can't rely on task_lock() if we want to dereference it.
+ *
+ * And in this case we can't trust the real_parent->mm == tsk->mm
+ * check, it can be false negative. But we do not care, if init or
+ * another oom-unkillable task does this it should blame itself.
+ */
+ rcu_read_lock();
+ ret = tsk->vfork_done && tsk->real_parent->mm == tsk->mm;
+ rcu_read_unlock();
+
+ return ret;
+}
+
+/* __GFP_IO isn't allowed if PF_MEMALLOC_NOIO is set in current->flags
+ * __GFP_FS is also cleared as it implies __GFP_IO.
+ */
+static inline gfp_t memalloc_noio_flags(gfp_t flags)
+{
+ if (unlikely(current->flags & PF_MEMALLOC_NOIO))
+ flags &= ~(__GFP_IO | __GFP_FS);
+ return flags;
+}
+
+static inline unsigned int memalloc_noio_save(void)
+{
+ unsigned int flags = current->flags & PF_MEMALLOC_NOIO;
+ current->flags |= PF_MEMALLOC_NOIO;
+ return flags;
+}
+
+static inline void memalloc_noio_restore(unsigned int flags)
+{
+ current->flags = (current->flags & ~PF_MEMALLOC_NOIO) | flags;
+}
+
+#endif /* _LINUX_SCHED_MM_H */
diff --git a/include/linux/sched/nohz.h b/include/linux/sched/nohz.h
new file mode 100644
index 000000000000..4995b717500b
--- /dev/null
+++ b/include/linux/sched/nohz.h
@@ -0,0 +1,43 @@
+#ifndef _LINUX_SCHED_NOHZ_H
+#define _LINUX_SCHED_NOHZ_H
+
+/*
+ * This is the interface between the scheduler and nohz/dyntics:
+ */
+
+#if defined(CONFIG_SMP) && defined(CONFIG_NO_HZ_COMMON)
+extern void cpu_load_update_nohz_start(void);
+extern void cpu_load_update_nohz_stop(void);
+#else
+static inline void cpu_load_update_nohz_start(void) { }
+static inline void cpu_load_update_nohz_stop(void) { }
+#endif
+
+#if defined(CONFIG_SMP) && defined(CONFIG_NO_HZ_COMMON)
+extern void nohz_balance_enter_idle(int cpu);
+extern void set_cpu_sd_state_idle(void);
+extern int get_nohz_timer_target(void);
+#else
+static inline void nohz_balance_enter_idle(int cpu) { }
+static inline void set_cpu_sd_state_idle(void) { }
+#endif
+
+#ifdef CONFIG_NO_HZ_COMMON
+void calc_load_enter_idle(void);
+void calc_load_exit_idle(void);
+#else
+static inline void calc_load_enter_idle(void) { }
+static inline void calc_load_exit_idle(void) { }
+#endif /* CONFIG_NO_HZ_COMMON */
+
+#if defined(CONFIG_NO_HZ_COMMON) && defined(CONFIG_SMP)
+extern void wake_up_nohz_cpu(int cpu);
+#else
+static inline void wake_up_nohz_cpu(int cpu) { }
+#endif
+
+#ifdef CONFIG_NO_HZ_FULL
+extern u64 scheduler_tick_max_deferment(void);
+#endif
+
+#endif /* _LINUX_SCHED_NOHZ_H */
diff --git a/include/linux/sched/numa_balancing.h b/include/linux/sched/numa_balancing.h
new file mode 100644
index 000000000000..35d5fc77b4be
--- /dev/null
+++ b/include/linux/sched/numa_balancing.h
@@ -0,0 +1,46 @@
+#ifndef _LINUX_SCHED_NUMA_BALANCING_H
+#define _LINUX_SCHED_NUMA_BALANCING_H
+
+/*
+ * This is the interface between the scheduler and the MM that
+ * implements memory access pattern based NUMA-balancing:
+ */
+
+#include <linux/sched.h>
+
+#define TNF_MIGRATED 0x01
+#define TNF_NO_GROUP 0x02
+#define TNF_SHARED 0x04
+#define TNF_FAULT_LOCAL 0x08
+#define TNF_MIGRATE_FAIL 0x10
+
+#ifdef CONFIG_NUMA_BALANCING
+extern void task_numa_fault(int last_node, int node, int pages, int flags);
+extern pid_t task_numa_group_id(struct task_struct *p);
+extern void set_numabalancing_state(bool enabled);
+extern void task_numa_free(struct task_struct *p);
+extern bool should_numa_migrate_memory(struct task_struct *p, struct page *page,
+ int src_nid, int dst_cpu);
+#else
+static inline void task_numa_fault(int last_node, int node, int pages,
+ int flags)
+{
+}
+static inline pid_t task_numa_group_id(struct task_struct *p)
+{
+ return 0;
+}
+static inline void set_numabalancing_state(bool enabled)
+{
+}
+static inline void task_numa_free(struct task_struct *p)
+{
+}
+static inline bool should_numa_migrate_memory(struct task_struct *p,
+ struct page *page, int src_nid, int dst_cpu)
+{
+ return true;
+}
+#endif
+
+#endif /* _LINUX_SCHED_NUMA_BALANCING_H */
diff --git a/include/linux/sched/prio.h b/include/linux/sched/prio.h
index d9cf5a5762d9..2cc450f6ec54 100644
--- a/include/linux/sched/prio.h
+++ b/include/linux/sched/prio.h
@@ -1,5 +1,5 @@
-#ifndef _SCHED_PRIO_H
-#define _SCHED_PRIO_H
+#ifndef _LINUX_SCHED_PRIO_H
+#define _LINUX_SCHED_PRIO_H
#define MAX_NICE 19
#define MIN_NICE -20
@@ -57,4 +57,4 @@ static inline long rlimit_to_nice(long prio)
return (MAX_NICE - prio + 1);
}
-#endif /* _SCHED_PRIO_H */
+#endif /* _LINUX_SCHED_PRIO_H */
diff --git a/include/linux/sched/rt.h b/include/linux/sched/rt.h
index a30b172df6e1..3bd668414f61 100644
--- a/include/linux/sched/rt.h
+++ b/include/linux/sched/rt.h
@@ -1,7 +1,9 @@
-#ifndef _SCHED_RT_H
-#define _SCHED_RT_H
+#ifndef _LINUX_SCHED_RT_H
+#define _LINUX_SCHED_RT_H
-#include <linux/sched/prio.h>
+#include <linux/sched.h>
+
+struct task_struct;
static inline int rt_prio(int prio)
{
@@ -57,4 +59,4 @@ extern void normalize_rt_tasks(void);
*/
#define RR_TIMESLICE (100 * HZ / 1000)
-#endif /* _SCHED_RT_H */
+#endif /* _LINUX_SCHED_RT_H */
diff --git a/include/linux/sched/signal.h b/include/linux/sched/signal.h
new file mode 100644
index 000000000000..2cf446704cd4
--- /dev/null
+++ b/include/linux/sched/signal.h
@@ -0,0 +1,613 @@
+#ifndef _LINUX_SCHED_SIGNAL_H
+#define _LINUX_SCHED_SIGNAL_H
+
+#include <linux/rculist.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/sched/jobctl.h>
+#include <linux/sched/task.h>
+#include <linux/cred.h>
+
+/*
+ * Types defining task->signal and task->sighand and APIs using them:
+ */
+
+struct sighand_struct {
+ atomic_t count;
+ struct k_sigaction action[_NSIG];
+ spinlock_t siglock;
+ wait_queue_head_t signalfd_wqh;
+};
+
+/*
+ * Per-process accounting stats:
+ */
+struct pacct_struct {
+ int ac_flag;
+ long ac_exitcode;
+ unsigned long ac_mem;
+ u64 ac_utime, ac_stime;
+ unsigned long ac_minflt, ac_majflt;
+};
+
+struct cpu_itimer {
+ u64 expires;
+ u64 incr;
+};
+
+/*
+ * This is the atomic variant of task_cputime, which can be used for
+ * storing and updating task_cputime statistics without locking.
+ */
+struct task_cputime_atomic {
+ atomic64_t utime;
+ atomic64_t stime;
+ atomic64_t sum_exec_runtime;
+};
+
+#define INIT_CPUTIME_ATOMIC \
+ (struct task_cputime_atomic) { \
+ .utime = ATOMIC64_INIT(0), \
+ .stime = ATOMIC64_INIT(0), \
+ .sum_exec_runtime = ATOMIC64_INIT(0), \
+ }
+/**
+ * struct thread_group_cputimer - thread group interval timer counts
+ * @cputime_atomic: atomic thread group interval timers.
+ * @running: true when there are timers running and
+ * @cputime_atomic receives updates.
+ * @checking_timer: true when a thread in the group is in the
+ * process of checking for thread group timers.
+ *
+ * This structure contains the version of task_cputime, above, that is
+ * used for thread group CPU timer calculations.
+ */
+struct thread_group_cputimer {
+ struct task_cputime_atomic cputime_atomic;
+ bool running;
+ bool checking_timer;
+};
+
+/*
+ * NOTE! "signal_struct" does not have its own
+ * locking, because a shared signal_struct always
+ * implies a shared sighand_struct, so locking
+ * sighand_struct is always a proper superset of
+ * the locking of signal_struct.
+ */
+struct signal_struct {
+ atomic_t sigcnt;
+ atomic_t live;
+ int nr_threads;
+ struct list_head thread_head;
+
+ wait_queue_head_t wait_chldexit; /* for wait4() */
+
+ /* current thread group signal load-balancing target: */
+ struct task_struct *curr_target;
+
+ /* shared signal handling: */
+ struct sigpending shared_pending;
+
+ /* thread group exit support */
+ int group_exit_code;
+ /* overloaded:
+ * - notify group_exit_task when ->count is equal to notify_count
+ * - everyone except group_exit_task is stopped during signal delivery
+ * of fatal signals, group_exit_task processes the signal.
+ */
+ int notify_count;
+ struct task_struct *group_exit_task;
+
+ /* thread group stop support, overloads group_exit_code too */
+ int group_stop_count;
+ unsigned int flags; /* see SIGNAL_* flags below */
+
+ /*
+ * PR_SET_CHILD_SUBREAPER marks a process, like a service
+ * manager, to re-parent orphan (double-forking) child processes
+ * to this process instead of 'init'. The service manager is
+ * able to receive SIGCHLD signals and is able to investigate
+ * the process until it calls wait(). All children of this
+ * process will inherit a flag if they should look for a
+ * child_subreaper process at exit.
+ */
+ unsigned int is_child_subreaper:1;
+ unsigned int has_child_subreaper:1;
+
+#ifdef CONFIG_POSIX_TIMERS
+
+ /* POSIX.1b Interval Timers */
+ int posix_timer_id;
+ struct list_head posix_timers;
+
+ /* ITIMER_REAL timer for the process */
+ struct hrtimer real_timer;
+ ktime_t it_real_incr;
+
+ /*
+ * ITIMER_PROF and ITIMER_VIRTUAL timers for the process, we use
+ * CPUCLOCK_PROF and CPUCLOCK_VIRT for indexing array as these
+ * values are defined to 0 and 1 respectively
+ */
+ struct cpu_itimer it[2];
+
+ /*
+ * Thread group totals for process CPU timers.
+ * See thread_group_cputimer(), et al, for details.
+ */
+ struct thread_group_cputimer cputimer;
+
+ /* Earliest-expiration cache. */
+ struct task_cputime cputime_expires;
+
+ struct list_head cpu_timers[3];
+
+#endif
+
+ struct pid *leader_pid;
+
+#ifdef CONFIG_NO_HZ_FULL
+ atomic_t tick_dep_mask;
+#endif
+
+ struct pid *tty_old_pgrp;
+
+ /* boolean value for session group leader */
+ int leader;
+
+ struct tty_struct *tty; /* NULL if no tty */
+
+#ifdef CONFIG_SCHED_AUTOGROUP
+ struct autogroup *autogroup;
+#endif
+ /*
+ * Cumulative resource counters for dead threads in the group,
+ * and for reaped dead child processes forked by this group.
+ * Live threads maintain their own counters and add to these
+ * in __exit_signal, except for the group leader.
+ */
+ seqlock_t stats_lock;
+ u64 utime, stime, cutime, cstime;
+ u64 gtime;
+ u64 cgtime;
+ struct prev_cputime prev_cputime;
+ unsigned long nvcsw, nivcsw, cnvcsw, cnivcsw;
+ unsigned long min_flt, maj_flt, cmin_flt, cmaj_flt;
+ unsigned long inblock, oublock, cinblock, coublock;
+ unsigned long maxrss, cmaxrss;
+ struct task_io_accounting ioac;
+
+ /*
+ * Cumulative ns of schedule CPU time fo dead threads in the
+ * group, not including a zombie group leader, (This only differs
+ * from jiffies_to_ns(utime + stime) if sched_clock uses something
+ * other than jiffies.)
+ */
+ unsigned long long sum_sched_runtime;
+
+ /*
+ * We don't bother to synchronize most readers of this at all,
+ * because there is no reader checking a limit that actually needs
+ * to get both rlim_cur and rlim_max atomically, and either one
+ * alone is a single word that can safely be read normally.
+ * getrlimit/setrlimit use task_lock(current->group_leader) to
+ * protect this instead of the siglock, because they really
+ * have no need to disable irqs.
+ */
+ struct rlimit rlim[RLIM_NLIMITS];
+
+#ifdef CONFIG_BSD_PROCESS_ACCT
+ struct pacct_struct pacct; /* per-process accounting information */
+#endif
+#ifdef CONFIG_TASKSTATS
+ struct taskstats *stats;
+#endif
+#ifdef CONFIG_AUDIT
+ unsigned audit_tty;
+ struct tty_audit_buf *tty_audit_buf;
+#endif
+
+ /*
+ * Thread is the potential origin of an oom condition; kill first on
+ * oom
+ */
+ bool oom_flag_origin;
+ short oom_score_adj; /* OOM kill score adjustment */
+ short oom_score_adj_min; /* OOM kill score adjustment min value.
+ * Only settable by CAP_SYS_RESOURCE. */
+ struct mm_struct *oom_mm; /* recorded mm when the thread group got
+ * killed by the oom killer */
+
+ struct mutex cred_guard_mutex; /* guard against foreign influences on
+ * credential calculations
+ * (notably. ptrace) */
+};
+
+/*
+ * Bits in flags field of signal_struct.
+ */
+#define SIGNAL_STOP_STOPPED 0x00000001 /* job control stop in effect */
+#define SIGNAL_STOP_CONTINUED 0x00000002 /* SIGCONT since WCONTINUED reap */
+#define SIGNAL_GROUP_EXIT 0x00000004 /* group exit in progress */
+#define SIGNAL_GROUP_COREDUMP 0x00000008 /* coredump in progress */
+/*
+ * Pending notifications to parent.
+ */
+#define SIGNAL_CLD_STOPPED 0x00000010
+#define SIGNAL_CLD_CONTINUED 0x00000020
+#define SIGNAL_CLD_MASK (SIGNAL_CLD_STOPPED|SIGNAL_CLD_CONTINUED)
+
+#define SIGNAL_UNKILLABLE 0x00000040 /* for init: ignore fatal signals */
+
+#define SIGNAL_STOP_MASK (SIGNAL_CLD_MASK | SIGNAL_STOP_STOPPED | \
+ SIGNAL_STOP_CONTINUED)
+
+static inline void signal_set_stop_flags(struct signal_struct *sig,
+ unsigned int flags)
+{
+ WARN_ON(sig->flags & (SIGNAL_GROUP_EXIT|SIGNAL_GROUP_COREDUMP));
+ sig->flags = (sig->flags & ~SIGNAL_STOP_MASK) | flags;
+}
+
+/* If true, all threads except ->group_exit_task have pending SIGKILL */
+static inline int signal_group_exit(const struct signal_struct *sig)
+{
+ return (sig->flags & SIGNAL_GROUP_EXIT) ||
+ (sig->group_exit_task != NULL);
+}
+
+extern void flush_signals(struct task_struct *);
+extern void ignore_signals(struct task_struct *);
+extern void flush_signal_handlers(struct task_struct *, int force_default);
+extern int dequeue_signal(struct task_struct *tsk, sigset_t *mask, siginfo_t *info);
+
+static inline int kernel_dequeue_signal(siginfo_t *info)
+{
+ struct task_struct *tsk = current;
+ siginfo_t __info;
+ int ret;
+
+ spin_lock_irq(&tsk->sighand->siglock);
+ ret = dequeue_signal(tsk, &tsk->blocked, info ?: &__info);
+ spin_unlock_irq(&tsk->sighand->siglock);
+
+ return ret;
+}
+
+static inline void kernel_signal_stop(void)
+{
+ spin_lock_irq(&current->sighand->siglock);
+ if (current->jobctl & JOBCTL_STOP_DEQUEUED)
+ __set_current_state(TASK_STOPPED);
+ spin_unlock_irq(&current->sighand->siglock);
+
+ schedule();
+}
+extern int send_sig_info(int, struct siginfo *, struct task_struct *);
+extern int force_sigsegv(int, struct task_struct *);
+extern int force_sig_info(int, struct siginfo *, struct task_struct *);
+extern int __kill_pgrp_info(int sig, struct siginfo *info, struct pid *pgrp);
+extern int kill_pid_info(int sig, struct siginfo *info, struct pid *pid);
+extern int kill_pid_info_as_cred(int, struct siginfo *, struct pid *,
+ const struct cred *, u32);
+extern int kill_pgrp(struct pid *pid, int sig, int priv);
+extern int kill_pid(struct pid *pid, int sig, int priv);
+extern int kill_proc_info(int, struct siginfo *, pid_t);
+extern __must_check bool do_notify_parent(struct task_struct *, int);
+extern void __wake_up_parent(struct task_struct *p, struct task_struct *parent);
+extern void force_sig(int, struct task_struct *);
+extern int send_sig(int, struct task_struct *, int);
+extern int zap_other_threads(struct task_struct *p);
+extern struct sigqueue *sigqueue_alloc(void);
+extern void sigqueue_free(struct sigqueue *);
+extern int send_sigqueue(struct sigqueue *, struct task_struct *, int group);
+extern int do_sigaction(int, struct k_sigaction *, struct k_sigaction *);
+
+static inline int restart_syscall(void)
+{
+ set_tsk_thread_flag(current, TIF_SIGPENDING);
+ return -ERESTARTNOINTR;
+}
+
+static inline int signal_pending(struct task_struct *p)
+{
+ return unlikely(test_tsk_thread_flag(p,TIF_SIGPENDING));
+}
+
+static inline int __fatal_signal_pending(struct task_struct *p)
+{
+ return unlikely(sigismember(&p->pending.signal, SIGKILL));
+}
+
+static inline int fatal_signal_pending(struct task_struct *p)
+{
+ return signal_pending(p) && __fatal_signal_pending(p);
+}
+
+static inline int signal_pending_state(long state, struct task_struct *p)
+{
+ if (!(state & (TASK_INTERRUPTIBLE | TASK_WAKEKILL)))
+ return 0;
+ if (!signal_pending(p))
+ return 0;
+
+ return (state & TASK_INTERRUPTIBLE) || __fatal_signal_pending(p);
+}
+
+/*
+ * Reevaluate whether the task has signals pending delivery.
+ * Wake the task if so.
+ * This is required every time the blocked sigset_t changes.
+ * callers must hold sighand->siglock.
+ */
+extern void recalc_sigpending_and_wake(struct task_struct *t);
+extern void recalc_sigpending(void);
+
+extern void signal_wake_up_state(struct task_struct *t, unsigned int state);
+
+static inline void signal_wake_up(struct task_struct *t, bool resume)
+{
+ signal_wake_up_state(t, resume ? TASK_WAKEKILL : 0);
+}
+static inline void ptrace_signal_wake_up(struct task_struct *t, bool resume)
+{
+ signal_wake_up_state(t, resume ? __TASK_TRACED : 0);
+}
+
+#ifdef TIF_RESTORE_SIGMASK
+/*
+ * Legacy restore_sigmask accessors. These are inefficient on
+ * SMP architectures because they require atomic operations.
+ */
+
+/**
+ * set_restore_sigmask() - make sure saved_sigmask processing gets done
+ *
+ * This sets TIF_RESTORE_SIGMASK and ensures that the arch signal code
+ * will run before returning to user mode, to process the flag. For
+ * all callers, TIF_SIGPENDING is already set or it's no harm to set
+ * it. TIF_RESTORE_SIGMASK need not be in the set of bits that the
+ * arch code will notice on return to user mode, in case those bits
+ * are scarce. We set TIF_SIGPENDING here to ensure that the arch
+ * signal code always gets run when TIF_RESTORE_SIGMASK is set.
+ */
+static inline void set_restore_sigmask(void)
+{
+ set_thread_flag(TIF_RESTORE_SIGMASK);
+ WARN_ON(!test_thread_flag(TIF_SIGPENDING));
+}
+static inline void clear_restore_sigmask(void)
+{
+ clear_thread_flag(TIF_RESTORE_SIGMASK);
+}
+static inline bool test_restore_sigmask(void)
+{
+ return test_thread_flag(TIF_RESTORE_SIGMASK);
+}
+static inline bool test_and_clear_restore_sigmask(void)
+{
+ return test_and_clear_thread_flag(TIF_RESTORE_SIGMASK);
+}
+
+#else /* TIF_RESTORE_SIGMASK */
+
+/* Higher-quality implementation, used if TIF_RESTORE_SIGMASK doesn't exist. */
+static inline void set_restore_sigmask(void)
+{
+ current->restore_sigmask = true;
+ WARN_ON(!test_thread_flag(TIF_SIGPENDING));
+}
+static inline void clear_restore_sigmask(void)
+{
+ current->restore_sigmask = false;
+}
+static inline bool test_restore_sigmask(void)
+{
+ return current->restore_sigmask;
+}
+static inline bool test_and_clear_restore_sigmask(void)
+{
+ if (!current->restore_sigmask)
+ return false;
+ current->restore_sigmask = false;
+ return true;
+}
+#endif
+
+static inline void restore_saved_sigmask(void)
+{
+ if (test_and_clear_restore_sigmask())
+ __set_current_blocked(&current->saved_sigmask);
+}
+
+static inline sigset_t *sigmask_to_save(void)
+{
+ sigset_t *res = &current->blocked;
+ if (unlikely(test_restore_sigmask()))
+ res = &current->saved_sigmask;
+ return res;
+}
+
+static inline int kill_cad_pid(int sig, int priv)
+{
+ return kill_pid(cad_pid, sig, priv);
+}
+
+/* These can be the second arg to send_sig_info/send_group_sig_info. */
+#define SEND_SIG_NOINFO ((struct siginfo *) 0)
+#define SEND_SIG_PRIV ((struct siginfo *) 1)
+#define SEND_SIG_FORCED ((struct siginfo *) 2)
+
+/*
+ * True if we are on the alternate signal stack.
+ */
+static inline int on_sig_stack(unsigned long sp)
+{
+ /*
+ * If the signal stack is SS_AUTODISARM then, by construction, we
+ * can't be on the signal stack unless user code deliberately set
+ * SS_AUTODISARM when we were already on it.
+ *
+ * This improves reliability: if user state gets corrupted such that
+ * the stack pointer points very close to the end of the signal stack,
+ * then this check will enable the signal to be handled anyway.
+ */
+ if (current->sas_ss_flags & SS_AUTODISARM)
+ return 0;
+
+#ifdef CONFIG_STACK_GROWSUP
+ return sp >= current->sas_ss_sp &&
+ sp - current->sas_ss_sp < current->sas_ss_size;
+#else
+ return sp > current->sas_ss_sp &&
+ sp - current->sas_ss_sp <= current->sas_ss_size;
+#endif
+}
+
+static inline int sas_ss_flags(unsigned long sp)
+{
+ if (!current->sas_ss_size)
+ return SS_DISABLE;
+
+ return on_sig_stack(sp) ? SS_ONSTACK : 0;
+}
+
+static inline void sas_ss_reset(struct task_struct *p)
+{
+ p->sas_ss_sp = 0;
+ p->sas_ss_size = 0;
+ p->sas_ss_flags = SS_DISABLE;
+}
+
+static inline unsigned long sigsp(unsigned long sp, struct ksignal *ksig)
+{
+ if (unlikely((ksig->ka.sa.sa_flags & SA_ONSTACK)) && ! sas_ss_flags(sp))
+#ifdef CONFIG_STACK_GROWSUP
+ return current->sas_ss_sp;
+#else
+ return current->sas_ss_sp + current->sas_ss_size;
+#endif
+ return sp;
+}
+
+extern void __cleanup_sighand(struct sighand_struct *);
+extern void flush_itimer_signals(void);
+
+#define tasklist_empty() \
+ list_empty(&init_task.tasks)
+
+#define next_task(p) \
+ list_entry_rcu((p)->tasks.next, struct task_struct, tasks)
+
+#define for_each_process(p) \
+ for (p = &init_task ; (p = next_task(p)) != &init_task ; )
+
+extern bool current_is_single_threaded(void);
+
+/*
+ * Careful: do_each_thread/while_each_thread is a double loop so
+ * 'break' will not work as expected - use goto instead.
+ */
+#define do_each_thread(g, t) \
+ for (g = t = &init_task ; (g = t = next_task(g)) != &init_task ; ) do
+
+#define while_each_thread(g, t) \
+ while ((t = next_thread(t)) != g)
+
+#define __for_each_thread(signal, t) \
+ list_for_each_entry_rcu(t, &(signal)->thread_head, thread_node)
+
+#define for_each_thread(p, t) \
+ __for_each_thread((p)->signal, t)
+
+/* Careful: this is a double loop, 'break' won't work as expected. */
+#define for_each_process_thread(p, t) \
+ for_each_process(p) for_each_thread(p, t)
+
+typedef int (*proc_visitor)(struct task_struct *p, void *data);
+void walk_process_tree(struct task_struct *top, proc_visitor, void *);
+
+static inline int get_nr_threads(struct task_struct *tsk)
+{
+ return tsk->signal->nr_threads;
+}
+
+static inline bool thread_group_leader(struct task_struct *p)
+{
+ return p->exit_signal >= 0;
+}
+
+/* Do to the insanities of de_thread it is possible for a process
+ * to have the pid of the thread group leader without actually being
+ * the thread group leader. For iteration through the pids in proc
+ * all we care about is that we have a task with the appropriate
+ * pid, we don't actually care if we have the right task.
+ */
+static inline bool has_group_leader_pid(struct task_struct *p)
+{
+ return task_pid(p) == p->signal->leader_pid;
+}
+
+static inline
+bool same_thread_group(struct task_struct *p1, struct task_struct *p2)
+{
+ return p1->signal == p2->signal;
+}
+
+static inline struct task_struct *next_thread(const struct task_struct *p)
+{
+ return list_entry_rcu(p->thread_group.next,
+ struct task_struct, thread_group);
+}
+
+static inline int thread_group_empty(struct task_struct *p)
+{
+ return list_empty(&p->thread_group);
+}
+
+#define delay_group_leader(p) \
+ (thread_group_leader(p) && !thread_group_empty(p))
+
+extern struct sighand_struct *__lock_task_sighand(struct task_struct *tsk,
+ unsigned long *flags);
+
+static inline struct sighand_struct *lock_task_sighand(struct task_struct *tsk,
+ unsigned long *flags)
+{
+ struct sighand_struct *ret;
+
+ ret = __lock_task_sighand(tsk, flags);
+ (void)__cond_lock(&tsk->sighand->siglock, ret);
+ return ret;
+}
+
+static inline void unlock_task_sighand(struct task_struct *tsk,
+ unsigned long *flags)
+{
+ spin_unlock_irqrestore(&tsk->sighand->siglock, *flags);
+}
+
+static inline unsigned long task_rlimit(const struct task_struct *tsk,
+ unsigned int limit)
+{
+ return READ_ONCE(tsk->signal->rlim[limit].rlim_cur);
+}
+
+static inline unsigned long task_rlimit_max(const struct task_struct *tsk,
+ unsigned int limit)
+{
+ return READ_ONCE(tsk->signal->rlim[limit].rlim_max);
+}
+
+static inline unsigned long rlimit(unsigned int limit)
+{
+ return task_rlimit(current, limit);
+}
+
+static inline unsigned long rlimit_max(unsigned int limit)
+{
+ return task_rlimit_max(current, limit);
+}
+
+#endif /* _LINUX_SCHED_SIGNAL_H */
diff --git a/include/linux/sched/stat.h b/include/linux/sched/stat.h
new file mode 100644
index 000000000000..141b74c53fad
--- /dev/null
+++ b/include/linux/sched/stat.h
@@ -0,0 +1,40 @@
+#ifndef _LINUX_SCHED_STAT_H
+#define _LINUX_SCHED_STAT_H
+
+#include <linux/percpu.h>
+
+/*
+ * Various counters maintained by the scheduler and fork(),
+ * exposed via /proc, sys.c or used by drivers via these APIs.
+ *
+ * ( Note that all these values are aquired without locking,
+ * so they can only be relied on in narrow circumstances. )
+ */
+
+extern unsigned long total_forks;
+extern int nr_threads;
+DECLARE_PER_CPU(unsigned long, process_counts);
+extern int nr_processes(void);
+extern unsigned long nr_running(void);
+extern bool single_task_running(void);
+extern unsigned long nr_iowait(void);
+extern unsigned long nr_iowait_cpu(int cpu);
+extern void get_iowait_load(unsigned long *nr_waiters, unsigned long *load);
+
+static inline int sched_info_on(void)
+{
+#ifdef CONFIG_SCHEDSTATS
+ return 1;
+#elif defined(CONFIG_TASK_DELAY_ACCT)
+ extern int delayacct_on;
+ return delayacct_on;
+#else
+ return 0;
+#endif
+}
+
+#ifdef CONFIG_SCHEDSTATS
+void force_schedstat_enabled(void);
+#endif
+
+#endif /* _LINUX_SCHED_STAT_H */
diff --git a/include/linux/sched/sysctl.h b/include/linux/sched/sysctl.h
index 49308e142aae..0f5ecd4d298e 100644
--- a/include/linux/sched/sysctl.h
+++ b/include/linux/sched/sysctl.h
@@ -1,5 +1,9 @@
-#ifndef _SCHED_SYSCTL_H
-#define _SCHED_SYSCTL_H
+#ifndef _LINUX_SCHED_SYSCTL_H
+#define _LINUX_SCHED_SYSCTL_H
+
+#include <linux/types.h>
+
+struct ctl_table;
#ifdef CONFIG_DETECT_HUNG_TASK
extern int sysctl_hung_task_check_count;
@@ -78,4 +82,4 @@ extern int sysctl_schedstats(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos);
-#endif /* _SCHED_SYSCTL_H */
+#endif /* _LINUX_SCHED_SYSCTL_H */
diff --git a/include/linux/sched/task.h b/include/linux/sched/task.h
new file mode 100644
index 000000000000..a978d7189cfd
--- /dev/null
+++ b/include/linux/sched/task.h
@@ -0,0 +1,139 @@
+#ifndef _LINUX_SCHED_TASK_H
+#define _LINUX_SCHED_TASK_H
+
+/*
+ * Interface between the scheduler and various task lifetime (fork()/exit())
+ * functionality:
+ */
+
+#include <linux/sched.h>
+
+struct task_struct;
+union thread_union;
+
+/*
+ * This serializes "schedule()" and also protects
+ * the run-queue from deletions/modifications (but
+ * _adding_ to the beginning of the run-queue has
+ * a separate lock).
+ */
+extern rwlock_t tasklist_lock;
+extern spinlock_t mmlist_lock;
+
+extern union thread_union init_thread_union;
+extern struct task_struct init_task;
+
+#ifdef CONFIG_PROVE_RCU
+extern int lockdep_tasklist_lock_is_held(void);
+#endif /* #ifdef CONFIG_PROVE_RCU */
+
+extern asmlinkage void schedule_tail(struct task_struct *prev);
+extern void init_idle(struct task_struct *idle, int cpu);
+extern void init_idle_bootup_task(struct task_struct *idle);
+
+extern int sched_fork(unsigned long clone_flags, struct task_struct *p);
+extern void sched_dead(struct task_struct *p);
+
+void __noreturn do_task_dead(void);
+
+extern void proc_caches_init(void);
+
+extern void release_task(struct task_struct * p);
+
+#ifdef CONFIG_HAVE_COPY_THREAD_TLS
+extern int copy_thread_tls(unsigned long, unsigned long, unsigned long,
+ struct task_struct *, unsigned long);
+#else
+extern int copy_thread(unsigned long, unsigned long, unsigned long,
+ struct task_struct *);
+
+/* Architectures that haven't opted into copy_thread_tls get the tls argument
+ * via pt_regs, so ignore the tls argument passed via C. */
+static inline int copy_thread_tls(
+ unsigned long clone_flags, unsigned long sp, unsigned long arg,
+ struct task_struct *p, unsigned long tls)
+{
+ return copy_thread(clone_flags, sp, arg, p);
+}
+#endif
+extern void flush_thread(void);
+
+#ifdef CONFIG_HAVE_EXIT_THREAD
+extern void exit_thread(struct task_struct *tsk);
+#else
+static inline void exit_thread(struct task_struct *tsk)
+{
+}
+#endif
+extern void do_group_exit(int);
+
+extern void exit_files(struct task_struct *);
+extern void exit_itimers(struct signal_struct *);
+
+extern long _do_fork(unsigned long, unsigned long, unsigned long, int __user *, int __user *, unsigned long);
+extern long do_fork(unsigned long, unsigned long, unsigned long, int __user *, int __user *);
+struct task_struct *fork_idle(int);
+extern pid_t kernel_thread(int (*fn)(void *), void *arg, unsigned long flags);
+
+extern void free_task(struct task_struct *tsk);
+
+/* sched_exec is called by processes performing an exec */
+#ifdef CONFIG_SMP
+extern void sched_exec(void);
+#else
+#define sched_exec() {}
+#endif
+
+#define get_task_struct(tsk) do { atomic_inc(&(tsk)->usage); } while(0)
+
+extern void __put_task_struct(struct task_struct *t);
+
+static inline void put_task_struct(struct task_struct *t)
+{
+ if (atomic_dec_and_test(&t->usage))
+ __put_task_struct(t);
+}
+
+struct task_struct *task_rcu_dereference(struct task_struct **ptask);
+struct task_struct *try_get_task_struct(struct task_struct **ptask);
+
+
+#ifdef CONFIG_ARCH_WANTS_DYNAMIC_TASK_STRUCT
+extern int arch_task_struct_size __read_mostly;
+#else
+# define arch_task_struct_size (sizeof(struct task_struct))
+#endif
+
+#ifdef CONFIG_VMAP_STACK
+static inline struct vm_struct *task_stack_vm_area(const struct task_struct *t)
+{
+ return t->stack_vm_area;
+}
+#else
+static inline struct vm_struct *task_stack_vm_area(const struct task_struct *t)
+{
+ return NULL;
+}
+#endif
+
+/*
+ * Protects ->fs, ->files, ->mm, ->group_info, ->comm, keyring
+ * subscriptions and synchronises with wait4(). Also used in procfs. Also
+ * pins the final release of task.io_context. Also protects ->cpuset and
+ * ->cgroup.subsys[]. And ->vfork_done.
+ *
+ * Nests both inside and outside of read_lock(&tasklist_lock).
+ * It must not be nested with write_lock_irq(&tasklist_lock),
+ * neither inside nor outside.
+ */
+static inline void task_lock(struct task_struct *p)
+{
+ spin_lock(&p->alloc_lock);
+}
+
+static inline void task_unlock(struct task_struct *p)
+{
+ spin_unlock(&p->alloc_lock);
+}
+
+#endif /* _LINUX_SCHED_TASK_H */
diff --git a/include/linux/sched/task_stack.h b/include/linux/sched/task_stack.h
new file mode 100644
index 000000000000..df6ea6665b31
--- /dev/null
+++ b/include/linux/sched/task_stack.h
@@ -0,0 +1,121 @@
+#ifndef _LINUX_SCHED_TASK_STACK_H
+#define _LINUX_SCHED_TASK_STACK_H
+
+/*
+ * task->stack (kernel stack) handling interfaces:
+ */
+
+#include <linux/sched.h>
+#include <linux/magic.h>
+
+#ifdef CONFIG_THREAD_INFO_IN_TASK
+
+/*
+ * When accessing the stack of a non-current task that might exit, use
+ * try_get_task_stack() instead. task_stack_page will return a pointer
+ * that could get freed out from under you.
+ */
+static inline void *task_stack_page(const struct task_struct *task)
+{
+ return task->stack;
+}
+
+#define setup_thread_stack(new,old) do { } while(0)
+
+static inline unsigned long *end_of_stack(const struct task_struct *task)
+{
+ return task->stack;
+}
+
+#elif !defined(__HAVE_THREAD_FUNCTIONS)
+
+#define task_stack_page(task) ((void *)(task)->stack)
+
+static inline void setup_thread_stack(struct task_struct *p, struct task_struct *org)
+{
+ *task_thread_info(p) = *task_thread_info(org);
+ task_thread_info(p)->task = p;
+}
+
+/*
+ * Return the address of the last usable long on the stack.
+ *
+ * When the stack grows down, this is just above the thread
+ * info struct. Going any lower will corrupt the threadinfo.
+ *
+ * When the stack grows up, this is the highest address.
+ * Beyond that position, we corrupt data on the next page.
+ */
+static inline unsigned long *end_of_stack(struct task_struct *p)
+{
+#ifdef CONFIG_STACK_GROWSUP
+ return (unsigned long *)((unsigned long)task_thread_info(p) + THREAD_SIZE) - 1;
+#else
+ return (unsigned long *)(task_thread_info(p) + 1);
+#endif
+}
+
+#endif
+
+#ifdef CONFIG_THREAD_INFO_IN_TASK
+static inline void *try_get_task_stack(struct task_struct *tsk)
+{
+ return atomic_inc_not_zero(&tsk->stack_refcount) ?
+ task_stack_page(tsk) : NULL;
+}
+
+extern void put_task_stack(struct task_struct *tsk);
+#else
+static inline void *try_get_task_stack(struct task_struct *tsk)
+{
+ return task_stack_page(tsk);
+}
+
+static inline void put_task_stack(struct task_struct *tsk) {}
+#endif
+
+#define task_stack_end_corrupted(task) \
+ (*(end_of_stack(task)) != STACK_END_MAGIC)
+
+static inline int object_is_on_stack(void *obj)
+{
+ void *stack = task_stack_page(current);
+
+ return (obj >= stack) && (obj < (stack + THREAD_SIZE));
+}
+
+extern void thread_stack_cache_init(void);
+
+#ifdef CONFIG_DEBUG_STACK_USAGE
+static inline unsigned long stack_not_used(struct task_struct *p)
+{
+ unsigned long *n = end_of_stack(p);
+
+ do { /* Skip over canary */
+# ifdef CONFIG_STACK_GROWSUP
+ n--;
+# else
+ n++;
+# endif
+ } while (!*n);
+
+# ifdef CONFIG_STACK_GROWSUP
+ return (unsigned long)end_of_stack(p) - (unsigned long)n;
+# else
+ return (unsigned long)n - (unsigned long)end_of_stack(p);
+# endif
+}
+#endif
+extern void set_task_stack_end_magic(struct task_struct *tsk);
+
+#ifndef __HAVE_ARCH_KSTACK_END
+static inline int kstack_end(void *addr)
+{
+ /* Reliable end of stack detection:
+ * Some APM bios versions misalign the stack
+ */
+ return !(((unsigned long)addr+sizeof(void*)-1) & (THREAD_SIZE-sizeof(void*)));
+}
+#endif
+
+#endif /* _LINUX_SCHED_TASK_STACK_H */
diff --git a/include/linux/sched/topology.h b/include/linux/sched/topology.h
new file mode 100644
index 000000000000..7d065abc7a47
--- /dev/null
+++ b/include/linux/sched/topology.h
@@ -0,0 +1,226 @@
+#ifndef _LINUX_SCHED_TOPOLOGY_H
+#define _LINUX_SCHED_TOPOLOGY_H
+
+#include <linux/topology.h>
+
+#include <linux/sched/idle.h>
+
+/*
+ * sched-domains (multiprocessor balancing) declarations:
+ */
+#ifdef CONFIG_SMP
+
+#define SD_LOAD_BALANCE 0x0001 /* Do load balancing on this domain. */
+#define SD_BALANCE_NEWIDLE 0x0002 /* Balance when about to become idle */
+#define SD_BALANCE_EXEC 0x0004 /* Balance on exec */
+#define SD_BALANCE_FORK 0x0008 /* Balance on fork, clone */
+#define SD_BALANCE_WAKE 0x0010 /* Balance on wakeup */
+#define SD_WAKE_AFFINE 0x0020 /* Wake task to waking CPU */
+#define SD_ASYM_CPUCAPACITY 0x0040 /* Groups have different max cpu capacities */
+#define SD_SHARE_CPUCAPACITY 0x0080 /* Domain members share cpu capacity */
+#define SD_SHARE_POWERDOMAIN 0x0100 /* Domain members share power domain */
+#define SD_SHARE_PKG_RESOURCES 0x0200 /* Domain members share cpu pkg resources */
+#define SD_SERIALIZE 0x0400 /* Only a single load balancing instance */
+#define SD_ASYM_PACKING 0x0800 /* Place busy groups earlier in the domain */
+#define SD_PREFER_SIBLING 0x1000 /* Prefer to place tasks in a sibling domain */
+#define SD_OVERLAP 0x2000 /* sched_domains of this level overlap */
+#define SD_NUMA 0x4000 /* cross-node balancing */
+
+/*
+ * Increase resolution of cpu_capacity calculations
+ */
+#define SCHED_CAPACITY_SHIFT SCHED_FIXEDPOINT_SHIFT
+#define SCHED_CAPACITY_SCALE (1L << SCHED_CAPACITY_SHIFT)
+
+#ifdef CONFIG_SCHED_SMT
+static inline int cpu_smt_flags(void)
+{
+ return SD_SHARE_CPUCAPACITY | SD_SHARE_PKG_RESOURCES;
+}
+#endif
+
+#ifdef CONFIG_SCHED_MC
+static inline int cpu_core_flags(void)
+{
+ return SD_SHARE_PKG_RESOURCES;
+}
+#endif
+
+#ifdef CONFIG_NUMA
+static inline int cpu_numa_flags(void)
+{
+ return SD_NUMA;
+}
+#endif
+
+extern int arch_asym_cpu_priority(int cpu);
+
+struct sched_domain_attr {
+ int relax_domain_level;
+};
+
+#define SD_ATTR_INIT (struct sched_domain_attr) { \
+ .relax_domain_level = -1, \
+}
+
+extern int sched_domain_level_max;
+
+struct sched_group;
+
+struct sched_domain_shared {
+ atomic_t ref;
+ atomic_t nr_busy_cpus;
+ int has_idle_cores;
+};
+
+struct sched_domain {
+ /* These fields must be setup */
+ struct sched_domain *parent; /* top domain must be null terminated */
+ struct sched_domain *child; /* bottom domain must be null terminated */
+ struct sched_group *groups; /* the balancing groups of the domain */
+ unsigned long min_interval; /* Minimum balance interval ms */
+ unsigned long max_interval; /* Maximum balance interval ms */
+ unsigned int busy_factor; /* less balancing by factor if busy */
+ unsigned int imbalance_pct; /* No balance until over watermark */
+ unsigned int cache_nice_tries; /* Leave cache hot tasks for # tries */
+ unsigned int busy_idx;
+ unsigned int idle_idx;
+ unsigned int newidle_idx;
+ unsigned int wake_idx;
+ unsigned int forkexec_idx;
+ unsigned int smt_gain;
+
+ int nohz_idle; /* NOHZ IDLE status */
+ int flags; /* See SD_* */
+ int level;
+
+ /* Runtime fields. */
+ unsigned long last_balance; /* init to jiffies. units in jiffies */
+ unsigned int balance_interval; /* initialise to 1. units in ms. */
+ unsigned int nr_balance_failed; /* initialise to 0 */
+
+ /* idle_balance() stats */
+ u64 max_newidle_lb_cost;
+ unsigned long next_decay_max_lb_cost;
+
+ u64 avg_scan_cost; /* select_idle_sibling */
+
+#ifdef CONFIG_SCHEDSTATS
+ /* load_balance() stats */
+ unsigned int lb_count[CPU_MAX_IDLE_TYPES];
+ unsigned int lb_failed[CPU_MAX_IDLE_TYPES];
+ unsigned int lb_balanced[CPU_MAX_IDLE_TYPES];
+ unsigned int lb_imbalance[CPU_MAX_IDLE_TYPES];
+ unsigned int lb_gained[CPU_MAX_IDLE_TYPES];
+ unsigned int lb_hot_gained[CPU_MAX_IDLE_TYPES];
+ unsigned int lb_nobusyg[CPU_MAX_IDLE_TYPES];
+ unsigned int lb_nobusyq[CPU_MAX_IDLE_TYPES];
+
+ /* Active load balancing */
+ unsigned int alb_count;
+ unsigned int alb_failed;
+ unsigned int alb_pushed;
+
+ /* SD_BALANCE_EXEC stats */
+ unsigned int sbe_count;
+ unsigned int sbe_balanced;
+ unsigned int sbe_pushed;
+
+ /* SD_BALANCE_FORK stats */
+ unsigned int sbf_count;
+ unsigned int sbf_balanced;
+ unsigned int sbf_pushed;
+
+ /* try_to_wake_up() stats */
+ unsigned int ttwu_wake_remote;
+ unsigned int ttwu_move_affine;
+ unsigned int ttwu_move_balance;
+#endif
+#ifdef CONFIG_SCHED_DEBUG
+ char *name;
+#endif
+ union {
+ void *private; /* used during construction */
+ struct rcu_head rcu; /* used during destruction */
+ };
+ struct sched_domain_shared *shared;
+
+ unsigned int span_weight;
+ /*
+ * Span of all CPUs in this domain.
+ *
+ * NOTE: this field is variable length. (Allocated dynamically
+ * by attaching extra space to the end of the structure,
+ * depending on how many CPUs the kernel has booted up with)
+ */
+ unsigned long span[0];
+};
+
+static inline struct cpumask *sched_domain_span(struct sched_domain *sd)
+{
+ return to_cpumask(sd->span);
+}
+
+extern void partition_sched_domains(int ndoms_new, cpumask_var_t doms_new[],
+ struct sched_domain_attr *dattr_new);
+
+/* Allocate an array of sched domains, for partition_sched_domains(). */
+cpumask_var_t *alloc_sched_domains(unsigned int ndoms);
+void free_sched_domains(cpumask_var_t doms[], unsigned int ndoms);
+
+bool cpus_share_cache(int this_cpu, int that_cpu);
+
+typedef const struct cpumask *(*sched_domain_mask_f)(int cpu);
+typedef int (*sched_domain_flags_f)(void);
+
+#define SDTL_OVERLAP 0x01
+
+struct sd_data {
+ struct sched_domain **__percpu sd;
+ struct sched_domain_shared **__percpu sds;
+ struct sched_group **__percpu sg;
+ struct sched_group_capacity **__percpu sgc;
+};
+
+struct sched_domain_topology_level {
+ sched_domain_mask_f mask;
+ sched_domain_flags_f sd_flags;
+ int flags;
+ int numa_level;
+ struct sd_data data;
+#ifdef CONFIG_SCHED_DEBUG
+ char *name;
+#endif
+};
+
+extern void set_sched_topology(struct sched_domain_topology_level *tl);
+
+#ifdef CONFIG_SCHED_DEBUG
+# define SD_INIT_NAME(type) .name = #type
+#else
+# define SD_INIT_NAME(type)
+#endif
+
+#else /* CONFIG_SMP */
+
+struct sched_domain_attr;
+
+static inline void
+partition_sched_domains(int ndoms_new, cpumask_var_t doms_new[],
+ struct sched_domain_attr *dattr_new)
+{
+}
+
+static inline bool cpus_share_cache(int this_cpu, int that_cpu)
+{
+ return true;
+}
+
+#endif /* !CONFIG_SMP */
+
+static inline int task_node(const struct task_struct *p)
+{
+ return cpu_to_node(task_cpu(p));
+}
+
+#endif /* _LINUX_SCHED_TOPOLOGY_H */
diff --git a/include/linux/sched/user.h b/include/linux/sched/user.h
new file mode 100644
index 000000000000..5d5415e129d4
--- /dev/null
+++ b/include/linux/sched/user.h
@@ -0,0 +1,61 @@
+#ifndef _LINUX_SCHED_USER_H
+#define _LINUX_SCHED_USER_H
+
+#include <linux/uidgid.h>
+#include <linux/atomic.h>
+
+struct key;
+
+/*
+ * Some day this will be a full-fledged user tracking system..
+ */
+struct user_struct {
+ atomic_t __count; /* reference count */
+ atomic_t processes; /* How many processes does this user have? */
+ atomic_t sigpending; /* How many pending signals does this user have? */
+#ifdef CONFIG_FANOTIFY
+ atomic_t fanotify_listeners;
+#endif
+#ifdef CONFIG_EPOLL
+ atomic_long_t epoll_watches; /* The number of file descriptors currently watched */
+#endif
+#ifdef CONFIG_POSIX_MQUEUE
+ /* protected by mq_lock */
+ unsigned long mq_bytes; /* How many bytes can be allocated to mqueue? */
+#endif
+ unsigned long locked_shm; /* How many pages of mlocked shm ? */
+ unsigned long unix_inflight; /* How many files in flight in unix sockets */
+ atomic_long_t pipe_bufs; /* how many pages are allocated in pipe buffers */
+
+#ifdef CONFIG_KEYS
+ struct key *uid_keyring; /* UID specific keyring */
+ struct key *session_keyring; /* UID's default session keyring */
+#endif
+
+ /* Hash table maintenance information */
+ struct hlist_node uidhash_node;
+ kuid_t uid;
+
+#if defined(CONFIG_PERF_EVENTS) || defined(CONFIG_BPF_SYSCALL)
+ atomic_long_t locked_vm;
+#endif
+};
+
+extern int uids_sysfs_init(void);
+
+extern struct user_struct *find_user(kuid_t);
+
+extern struct user_struct root_user;
+#define INIT_USER (&root_user)
+
+
+/* per-UID process charging. */
+extern struct user_struct * alloc_uid(kuid_t);
+static inline struct user_struct *get_uid(struct user_struct *u)
+{
+ atomic_inc(&u->__count);
+ return u;
+}
+extern void free_uid(struct user_struct *);
+
+#endif /* _LINUX_SCHED_USER_H */
diff --git a/include/linux/sched/wake_q.h b/include/linux/sched/wake_q.h
new file mode 100644
index 000000000000..d03d8a9047dc
--- /dev/null
+++ b/include/linux/sched/wake_q.h
@@ -0,0 +1,53 @@
+#ifndef _LINUX_SCHED_WAKE_Q_H
+#define _LINUX_SCHED_WAKE_Q_H
+
+/*
+ * Wake-queues are lists of tasks with a pending wakeup, whose
+ * callers have already marked the task as woken internally,
+ * and can thus carry on. A common use case is being able to
+ * do the wakeups once the corresponding user lock as been
+ * released.
+ *
+ * We hold reference to each task in the list across the wakeup,
+ * thus guaranteeing that the memory is still valid by the time
+ * the actual wakeups are performed in wake_up_q().
+ *
+ * One per task suffices, because there's never a need for a task to be
+ * in two wake queues simultaneously; it is forbidden to abandon a task
+ * in a wake queue (a call to wake_up_q() _must_ follow), so if a task is
+ * already in a wake queue, the wakeup will happen soon and the second
+ * waker can just skip it.
+ *
+ * The DEFINE_WAKE_Q macro declares and initializes the list head.
+ * wake_up_q() does NOT reinitialize the list; it's expected to be
+ * called near the end of a function. Otherwise, the list can be
+ * re-initialized for later re-use by wake_q_init().
+ *
+ * Note that this can cause spurious wakeups. schedule() callers
+ * must ensure the call is done inside a loop, confirming that the
+ * wakeup condition has in fact occurred.
+ */
+
+#include <linux/sched.h>
+
+struct wake_q_head {
+ struct wake_q_node *first;
+ struct wake_q_node **lastp;
+};
+
+#define WAKE_Q_TAIL ((struct wake_q_node *) 0x01)
+
+#define DEFINE_WAKE_Q(name) \
+ struct wake_q_head name = { WAKE_Q_TAIL, &name.first }
+
+static inline void wake_q_init(struct wake_q_head *head)
+{
+ head->first = WAKE_Q_TAIL;
+ head->lastp = &head->first;
+}
+
+extern void wake_q_add(struct wake_q_head *head,
+ struct task_struct *task);
+extern void wake_up_q(struct wake_q_head *head);
+
+#endif /* _LINUX_SCHED_WAKE_Q_H */
diff --git a/include/linux/sched/xacct.h b/include/linux/sched/xacct.h
new file mode 100644
index 000000000000..a28156a0d34a
--- /dev/null
+++ b/include/linux/sched/xacct.h
@@ -0,0 +1,48 @@
+#ifndef _LINUX_SCHED_XACCT_H
+#define _LINUX_SCHED_XACCT_H
+
+/*
+ * Extended task accounting methods:
+ */
+
+#include <linux/sched.h>
+
+#ifdef CONFIG_TASK_XACCT
+static inline void add_rchar(struct task_struct *tsk, ssize_t amt)
+{
+ tsk->ioac.rchar += amt;
+}
+
+static inline void add_wchar(struct task_struct *tsk, ssize_t amt)
+{
+ tsk->ioac.wchar += amt;
+}
+
+static inline void inc_syscr(struct task_struct *tsk)
+{
+ tsk->ioac.syscr++;
+}
+
+static inline void inc_syscw(struct task_struct *tsk)
+{
+ tsk->ioac.syscw++;
+}
+#else
+static inline void add_rchar(struct task_struct *tsk, ssize_t amt)
+{
+}
+
+static inline void add_wchar(struct task_struct *tsk, ssize_t amt)
+{
+}
+
+static inline void inc_syscr(struct task_struct *tsk)
+{
+}
+
+static inline void inc_syscw(struct task_struct *tsk)
+{
+}
+#endif
+
+#endif /* _LINUX_SCHED_XACCT_H */
diff --git a/include/linux/signal.h b/include/linux/signal.h
index 5308304993be..94ad6eea9550 100644
--- a/include/linux/signal.h
+++ b/include/linux/signal.h
@@ -1,32 +1,13 @@
#ifndef _LINUX_SIGNAL_H
#define _LINUX_SIGNAL_H
-#include <linux/list.h>
#include <linux/bug.h>
-#include <uapi/linux/signal.h>
+#include <linux/signal_types.h>
struct task_struct;
/* for sysctl */
extern int print_fatal_signals;
-/*
- * Real Time signals may be queued.
- */
-
-struct sigqueue {
- struct list_head list;
- int flags;
- siginfo_t info;
- struct user_struct *user;
-};
-
-/* flags values. */
-#define SIGQUEUE_PREALLOC 1
-
-struct sigpending {
- struct list_head list;
- sigset_t signal;
-};
#ifndef HAVE_ARCH_COPY_SIGINFO
@@ -272,42 +253,6 @@ extern void set_current_blocked(sigset_t *);
extern void __set_current_blocked(const sigset_t *);
extern int show_unhandled_signals;
-struct sigaction {
-#ifndef __ARCH_HAS_IRIX_SIGACTION
- __sighandler_t sa_handler;
- unsigned long sa_flags;
-#else
- unsigned int sa_flags;
- __sighandler_t sa_handler;
-#endif
-#ifdef __ARCH_HAS_SA_RESTORER
- __sigrestore_t sa_restorer;
-#endif
- sigset_t sa_mask; /* mask last for extensibility */
-};
-
-struct k_sigaction {
- struct sigaction sa;
-#ifdef __ARCH_HAS_KA_RESTORER
- __sigrestore_t ka_restorer;
-#endif
-};
-
-#ifdef CONFIG_OLD_SIGACTION
-struct old_sigaction {
- __sighandler_t sa_handler;
- old_sigset_t sa_mask;
- unsigned long sa_flags;
- __sigrestore_t sa_restorer;
-};
-#endif
-
-struct ksignal {
- struct k_sigaction ka;
- siginfo_t info;
- int sig;
-};
-
extern int get_signal(struct ksignal *ksig);
extern void signal_setup_done(int failed, struct ksignal *ksig, int stepping);
extern void exit_signals(struct task_struct *tsk);
diff --git a/include/linux/signal_types.h b/include/linux/signal_types.h
new file mode 100644
index 000000000000..16d862a3d8f3
--- /dev/null
+++ b/include/linux/signal_types.h
@@ -0,0 +1,66 @@
+#ifndef _LINUX_SIGNAL_TYPES_H
+#define _LINUX_SIGNAL_TYPES_H
+
+/*
+ * Basic signal handling related data type definitions:
+ */
+
+#include <linux/list.h>
+#include <uapi/linux/signal.h>
+
+/*
+ * Real Time signals may be queued.
+ */
+
+struct sigqueue {
+ struct list_head list;
+ int flags;
+ siginfo_t info;
+ struct user_struct *user;
+};
+
+/* flags values. */
+#define SIGQUEUE_PREALLOC 1
+
+struct sigpending {
+ struct list_head list;
+ sigset_t signal;
+};
+
+struct sigaction {
+#ifndef __ARCH_HAS_IRIX_SIGACTION
+ __sighandler_t sa_handler;
+ unsigned long sa_flags;
+#else
+ unsigned int sa_flags;
+ __sighandler_t sa_handler;
+#endif
+#ifdef __ARCH_HAS_SA_RESTORER
+ __sigrestore_t sa_restorer;
+#endif
+ sigset_t sa_mask; /* mask last for extensibility */
+};
+
+struct k_sigaction {
+ struct sigaction sa;
+#ifdef __ARCH_HAS_KA_RESTORER
+ __sigrestore_t ka_restorer;
+#endif
+};
+
+#ifdef CONFIG_OLD_SIGACTION
+struct old_sigaction {
+ __sighandler_t sa_handler;
+ old_sigset_t sa_mask;
+ unsigned long sa_flags;
+ __sigrestore_t sa_restorer;
+};
+#endif
+
+struct ksignal {
+ struct k_sigaction ka;
+ siginfo_t info;
+ int sig;
+};
+
+#endif /* _LINUX_SIGNAL_TYPES_H */
diff --git a/include/linux/signalfd.h b/include/linux/signalfd.h
index eadbe227c256..4985048640a7 100644
--- a/include/linux/signalfd.h
+++ b/include/linux/signalfd.h
@@ -8,7 +8,7 @@
#define _LINUX_SIGNALFD_H
#include <uapi/linux/signalfd.h>
-
+#include <linux/sched/signal.h>
#ifdef CONFIG_SIGNALFD
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 69ccd2636911..c776abd86937 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -34,6 +34,7 @@
#include <linux/dma-mapping.h>
#include <linux/netdev_features.h>
#include <linux/sched.h>
+#include <linux/sched/clock.h>
#include <net/flow_dissector.h>
#include <linux/splice.h>
#include <linux/in6.h>
diff --git a/include/linux/sunrpc/types.h b/include/linux/sunrpc/types.h
index d222f47550af..11a7536c0fd2 100644
--- a/include/linux/sunrpc/types.h
+++ b/include/linux/sunrpc/types.h
@@ -10,6 +10,7 @@
#define _LINUX_SUNRPC_TYPES_H_
#include <linux/timer.h>
+#include <linux/sched/signal.h>
#include <linux/workqueue.h>
#include <linux/sunrpc/debug.h>
#include <linux/list.h>
diff --git a/include/linux/taskstats_kern.h b/include/linux/taskstats_kern.h
index 58de6edf751f..e2a5daf8d14f 100644
--- a/include/linux/taskstats_kern.h
+++ b/include/linux/taskstats_kern.h
@@ -8,7 +8,7 @@
#define _LINUX_TASKSTATS_KERN_H
#include <linux/taskstats.h>
-#include <linux/sched.h>
+#include <linux/sched/signal.h>
#include <linux/slab.h>
#ifdef CONFIG_TASKSTATS
diff --git a/include/linux/timekeeping.h b/include/linux/timekeeping.h
index d2e804e15c3e..b598cbc7b576 100644
--- a/include/linux/timekeeping.h
+++ b/include/linux/timekeeping.h
@@ -8,6 +8,10 @@
void timekeeping_init(void);
extern int timekeeping_suspended;
+/* Architecture timer tick functions: */
+extern void update_process_times(int user);
+extern void xtime_update(unsigned long ticks);
+
/*
* Get and set timeofday
*/
diff --git a/include/linux/timer.h b/include/linux/timer.h
index c7bdf895179c..e6789b8757d5 100644
--- a/include/linux/timer.h
+++ b/include/linux/timer.h
@@ -212,7 +212,7 @@ struct hrtimer;
extern enum hrtimer_restart it_real_fn(struct hrtimer *);
#if defined(CONFIG_SMP) && defined(CONFIG_NO_HZ_COMMON)
-#include <linux/sysctl.h>
+struct ctl_table;
extern unsigned int sysctl_timer_migration;
int timer_migration_handler(struct ctl_table *table, int write,
diff --git a/include/linux/user_namespace.h b/include/linux/user_namespace.h
index 363e0e8082a9..be765234c0a2 100644
--- a/include/linux/user_namespace.h
+++ b/include/linux/user_namespace.h
@@ -5,6 +5,9 @@
#include <linux/nsproxy.h>
#include <linux/ns_common.h>
#include <linux/sched.h>
+#include <linux/workqueue.h>
+#include <linux/rwsem.h>
+#include <linux/sysctl.h>
#include <linux/err.h>
#define UID_GID_MAP_MAX_EXTENTS 5
diff --git a/include/linux/vmacache.h b/include/linux/vmacache.h
index c3fa0fd43949..1081db987391 100644
--- a/include/linux/vmacache.h
+++ b/include/linux/vmacache.h
@@ -12,7 +12,7 @@
static inline void vmacache_flush(struct task_struct *tsk)
{
- memset(tsk->vmacache, 0, sizeof(tsk->vmacache));
+ memset(tsk->vmacache.vmas, 0, sizeof(tsk->vmacache.vmas));
}
extern void vmacache_flush_all(struct mm_struct *mm);
diff --git a/include/linux/wait.h b/include/linux/wait.h
index 1421132e9086..aacb1282d19a 100644
--- a/include/linux/wait.h
+++ b/include/linux/wait.h
@@ -6,6 +6,7 @@
#include <linux/list.h>
#include <linux/stddef.h>
#include <linux/spinlock.h>
+
#include <asm/current.h>
#include <uapi/linux/wait.h>