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authorLinus Torvalds <torvalds@linux-foundation.org>2012-05-22 18:18:55 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-05-22 18:18:55 -0700
commit2ff2b289a695807e291e1ed9f639d8a3ba5f4254 (patch)
treee4b7f44e5cc1582ba2be8aeba221f4841f4c86a6 /include
parent88d6ae8dc33af12fe1c7941b1fae2767374046fd (diff)
parent73787190d04a34e6da745da893b3ae8bedde418f (diff)
Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf changes from Ingo Molnar: "Lots of changes: - (much) improved assembly annotation support in perf report, with jump visualization, searching, navigation, visual output improvements and more. - kernel support for AMD IBS PMU hardware features. Notably 'perf record -e cycles:p' and 'perf top -e cycles:p' should work without skid now, like PEBS does on the Intel side, because it takes advantage of IBS transparently. - the libtracevents library: it is the first step towards unifying tracing tooling and perf, and it also gives a tracing library for external tools like powertop to rely on. - infrastructure: various improvements and refactoring of the UI modules and related code - infrastructure: cleanup and simplification of the profiling targets code (--uid, --pid, --tid, --cpu, --all-cpus, etc.) - tons of robustness fixes all around - various ftrace updates: speedups, cleanups, robustness improvements. - typing 'make' in tools/ will now give you a menu of projects to build and a short help text to explain what each does. - ... and lots of other changes I forgot to list. The perf record make bzImage + perf report regression you reported should be fixed." * 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (166 commits) tracing: Remove kernel_lock annotations tracing: Fix initial buffer_size_kb state ring-buffer: Merge separate resize loops perf evsel: Create events initially disabled -- again perf tools: Split term type into value type and term type perf hists: Fix callchain ip printf format perf target: Add uses_mmap field ftrace: Remove selecting FRAME_POINTER with FUNCTION_TRACER ftrace/x86: Have x86 ftrace use the ftrace_modify_all_code() ftrace: Make ftrace_modify_all_code() global for archs to use ftrace: Return record ip addr for ftrace_location() ftrace: Consolidate ftrace_location() and ftrace_text_reserved() ftrace: Speed up search by skipping pages by address ftrace: Remove extra helper functions ftrace: Sort all function addresses, not just per page tracing: change CPU ring buffer state from tracing_cpumask tracing: Check return value of tracing_dentry_percpu() ring-buffer: Reset head page before running self test ring-buffer: Add integrity check at end of iter read ring-buffer: Make addition of pages in ring buffer atomic ...
Diffstat (limited to 'include')
-rw-r--r--include/asm-generic/vmlinux.lds.h2
-rw-r--r--include/linux/ftrace.h19
-rw-r--r--include/linux/kernel.h13
-rw-r--r--include/linux/perf_event.h29
-rw-r--r--include/linux/ring_buffer.h6
5 files changed, 38 insertions, 31 deletions
diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index 8aeadf6b553a..4e2e1cc505ab 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -486,8 +486,8 @@
CPU_DISCARD(init.data) \
MEM_DISCARD(init.data) \
KERNEL_CTORS() \
- *(.init.rodata) \
MCOUNT_REC() \
+ *(.init.rodata) \
FTRACE_EVENTS() \
TRACE_SYSCALLS() \
DEV_DISCARD(init.rodata) \
diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h
index 72a6cabb4d5b..55e6d63d46d0 100644
--- a/include/linux/ftrace.h
+++ b/include/linux/ftrace.h
@@ -286,10 +286,16 @@ struct ftrace_rec_iter *ftrace_rec_iter_start(void);
struct ftrace_rec_iter *ftrace_rec_iter_next(struct ftrace_rec_iter *iter);
struct dyn_ftrace *ftrace_rec_iter_record(struct ftrace_rec_iter *iter);
+#define for_ftrace_rec_iter(iter) \
+ for (iter = ftrace_rec_iter_start(); \
+ iter; \
+ iter = ftrace_rec_iter_next(iter))
+
+
int ftrace_update_record(struct dyn_ftrace *rec, int enable);
int ftrace_test_record(struct dyn_ftrace *rec, int enable);
void ftrace_run_stop_machine(int command);
-int ftrace_location(unsigned long ip);
+unsigned long ftrace_location(unsigned long ip);
extern ftrace_func_t ftrace_trace_function;
@@ -308,11 +314,14 @@ ftrace_set_early_filter(struct ftrace_ops *ops, char *buf, int enable);
/* defined in arch */
extern int ftrace_ip_converted(unsigned long ip);
extern int ftrace_dyn_arch_init(void *data);
+extern void ftrace_replace_code(int enable);
extern int ftrace_update_ftrace_func(ftrace_func_t func);
extern void ftrace_caller(void);
extern void ftrace_call(void);
extern void mcount_call(void);
+void ftrace_modify_all_code(int command);
+
#ifndef FTRACE_ADDR
#define FTRACE_ADDR ((unsigned long)ftrace_caller)
#endif
@@ -485,8 +494,12 @@ static inline void __ftrace_enabled_restore(int enabled)
extern void trace_preempt_on(unsigned long a0, unsigned long a1);
extern void trace_preempt_off(unsigned long a0, unsigned long a1);
#else
- static inline void trace_preempt_on(unsigned long a0, unsigned long a1) { }
- static inline void trace_preempt_off(unsigned long a0, unsigned long a1) { }
+/*
+ * Use defines instead of static inlines because some arches will make code out
+ * of the CALLER_ADDR, when we really want these to be a real nop.
+ */
+# define trace_preempt_on(a0, a1) do { } while (0)
+# define trace_preempt_off(a0, a1) do { } while (0)
#endif
#ifdef CONFIG_FTRACE_MCOUNT_RECORD
diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index 645231c373c8..c0d34420a913 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -480,15 +480,16 @@ do { \
#define trace_printk(fmt, args...) \
do { \
+ static const char *trace_printk_fmt \
+ __attribute__((section("__trace_printk_fmt"))) = \
+ __builtin_constant_p(fmt) ? fmt : NULL; \
+ \
__trace_printk_check_format(fmt, ##args); \
- if (__builtin_constant_p(fmt)) { \
- static const char *trace_printk_fmt \
- __attribute__((section("__trace_printk_fmt"))) = \
- __builtin_constant_p(fmt) ? fmt : NULL; \
\
+ if (__builtin_constant_p(fmt)) \
__trace_bprintk(_THIS_IP_, trace_printk_fmt, ##args); \
- } else \
- __trace_printk(_THIS_IP_, fmt, ##args); \
+ else \
+ __trace_printk(_THIS_IP_, fmt, ##args); \
} while (0)
extern __printf(2, 3)
diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index ddbb6a901f65..8adf70e9e3cc 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -1084,10 +1084,8 @@ extern void perf_pmu_unregister(struct pmu *pmu);
extern int perf_num_counters(void);
extern const char *perf_pmu_name(void);
-extern void __perf_event_task_sched_in(struct task_struct *prev,
- struct task_struct *task);
-extern void __perf_event_task_sched_out(struct task_struct *prev,
- struct task_struct *next);
+extern void __perf_event_task_sched(struct task_struct *prev,
+ struct task_struct *next);
extern int perf_event_init_task(struct task_struct *child);
extern void perf_event_exit_task(struct task_struct *child);
extern void perf_event_free_task(struct task_struct *task);
@@ -1132,11 +1130,14 @@ struct perf_sample_data {
struct perf_branch_stack *br_stack;
};
-static inline void perf_sample_data_init(struct perf_sample_data *data, u64 addr)
+static inline void perf_sample_data_init(struct perf_sample_data *data,
+ u64 addr, u64 period)
{
+ /* remaining struct members initialized in perf_prepare_sample() */
data->addr = addr;
data->raw = NULL;
data->br_stack = NULL;
+ data->period = period;
}
extern void perf_output_sample(struct perf_output_handle *handle,
@@ -1204,20 +1205,13 @@ perf_sw_event(u32 event_id, u64 nr, struct pt_regs *regs, u64 addr)
extern struct static_key_deferred perf_sched_events;
-static inline void perf_event_task_sched_in(struct task_struct *prev,
+static inline void perf_event_task_sched(struct task_struct *prev,
struct task_struct *task)
{
- if (static_key_false(&perf_sched_events.key))
- __perf_event_task_sched_in(prev, task);
-}
-
-static inline void perf_event_task_sched_out(struct task_struct *prev,
- struct task_struct *next)
-{
perf_sw_event(PERF_COUNT_SW_CONTEXT_SWITCHES, 1, NULL, 0);
if (static_key_false(&perf_sched_events.key))
- __perf_event_task_sched_out(prev, next);
+ __perf_event_task_sched(prev, task);
}
extern void perf_event_mmap(struct vm_area_struct *vma);
@@ -1292,11 +1286,8 @@ extern void perf_event_disable(struct perf_event *event);
extern void perf_event_task_tick(void);
#else
static inline void
-perf_event_task_sched_in(struct task_struct *prev,
- struct task_struct *task) { }
-static inline void
-perf_event_task_sched_out(struct task_struct *prev,
- struct task_struct *next) { }
+perf_event_task_sched(struct task_struct *prev,
+ struct task_struct *task) { }
static inline int perf_event_init_task(struct task_struct *child) { return 0; }
static inline void perf_event_exit_task(struct task_struct *child) { }
static inline void perf_event_free_task(struct task_struct *task) { }
diff --git a/include/linux/ring_buffer.h b/include/linux/ring_buffer.h
index 7be2e88f23fd..6c8835f74f79 100644
--- a/include/linux/ring_buffer.h
+++ b/include/linux/ring_buffer.h
@@ -96,9 +96,11 @@ __ring_buffer_alloc(unsigned long size, unsigned flags, struct lock_class_key *k
__ring_buffer_alloc((size), (flags), &__key); \
})
+#define RING_BUFFER_ALL_CPUS -1
+
void ring_buffer_free(struct ring_buffer *buffer);
-int ring_buffer_resize(struct ring_buffer *buffer, unsigned long size);
+int ring_buffer_resize(struct ring_buffer *buffer, unsigned long size, int cpu);
void ring_buffer_change_overwrite(struct ring_buffer *buffer, int val);
@@ -129,7 +131,7 @@ ring_buffer_read(struct ring_buffer_iter *iter, u64 *ts);
void ring_buffer_iter_reset(struct ring_buffer_iter *iter);
int ring_buffer_iter_empty(struct ring_buffer_iter *iter);
-unsigned long ring_buffer_size(struct ring_buffer *buffer);
+unsigned long ring_buffer_size(struct ring_buffer *buffer, int cpu);
void ring_buffer_reset_cpu(struct ring_buffer *buffer, int cpu);
void ring_buffer_reset(struct ring_buffer *buffer);