diff options
| author | Gabriel Krisman Bertazi <krisman@collabora.com> | 2020-11-16 12:42:01 -0500 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2020-11-16 21:53:15 +0100 |
| commit | 524666cb5de7c38a1925e7401a6e59d68682dd8c (patch) | |
| tree | 7e2ce85286288e28520bc8d3b235128da192e5bc /include | |
| parent | 23d67a54857a768acdb0804cdd6037c324a50ecd (diff) | |
tracepoints: Migrate to use SYSCALL_WORK flag
On architectures using the generic syscall entry code the architecture
independent syscall work is moved to flags in thread_info::syscall_work.
This removes architecture dependencies and frees up TIF bits.
Define SYSCALL_WORK_SYSCALL_TRACEPOINT, use it in the generic entry code
and convert the code which uses the TIF specific helper functions to use
the new *_syscall_work() helpers which either resolve to the new mode for
users of the generic entry code or to the TIF based functions for the other
architectures.
Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Andy Lutomirski <luto@kernel.org>
Link: https://lore.kernel.org/r/20201116174206.2639648-6-krisman@collabora.com
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/entry-common.h | 13 | ||||
| -rw-r--r-- | include/linux/thread_info.h | 2 | ||||
| -rw-r--r-- | include/trace/syscall.h | 6 |
3 files changed, 10 insertions, 11 deletions
diff --git a/include/linux/entry-common.h b/include/linux/entry-common.h index fa3cdb102dbf..2a01eee2dbba 100644 --- a/include/linux/entry-common.h +++ b/include/linux/entry-common.h @@ -17,10 +17,6 @@ # define _TIF_SYSCALL_EMU (0) #endif -#ifndef _TIF_SYSCALL_TRACEPOINT -# define _TIF_SYSCALL_TRACEPOINT (0) -#endif - #ifndef _TIF_SYSCALL_AUDIT # define _TIF_SYSCALL_AUDIT (0) #endif @@ -46,7 +42,7 @@ #define SYSCALL_ENTER_WORK \ (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | \ - _TIF_SYSCALL_TRACEPOINT | _TIF_SYSCALL_EMU | \ + _TIF_SYSCALL_EMU | \ ARCH_SYSCALL_ENTER_WORK) /* @@ -58,10 +54,11 @@ #define SYSCALL_EXIT_WORK \ (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | \ - _TIF_SYSCALL_TRACEPOINT | ARCH_SYSCALL_EXIT_WORK) + ARCH_SYSCALL_EXIT_WORK) -#define SYSCALL_WORK_ENTER (SYSCALL_WORK_SECCOMP) -#define SYSCALL_WORK_EXIT (0) +#define SYSCALL_WORK_ENTER (SYSCALL_WORK_SECCOMP | \ + SYSCALL_WORK_SYSCALL_TRACEPOINT) +#define SYSCALL_WORK_EXIT (SYSCALL_WORK_SYSCALL_TRACEPOINT) /* * TIF flags handled in exit_to_user_mode_loop() diff --git a/include/linux/thread_info.h b/include/linux/thread_info.h index a308ba4ef07b..c232043c12d3 100644 --- a/include/linux/thread_info.h +++ b/include/linux/thread_info.h @@ -37,9 +37,11 @@ enum { enum syscall_work_bit { SYSCALL_WORK_BIT_SECCOMP, + SYSCALL_WORK_BIT_SYSCALL_TRACEPOINT, }; #define SYSCALL_WORK_SECCOMP BIT(SYSCALL_WORK_BIT_SECCOMP) +#define SYSCALL_WORK_SYSCALL_TRACEPOINT BIT(SYSCALL_WORK_BIT_SYSCALL_TRACEPOINT) #include <asm/thread_info.h> diff --git a/include/trace/syscall.h b/include/trace/syscall.h index dc8ac27d27c1..8e193f3a33b3 100644 --- a/include/trace/syscall.h +++ b/include/trace/syscall.h @@ -37,10 +37,10 @@ struct syscall_metadata { #if defined(CONFIG_TRACEPOINTS) && defined(CONFIG_HAVE_SYSCALL_TRACEPOINTS) static inline void syscall_tracepoint_update(struct task_struct *p) { - if (test_thread_flag(TIF_SYSCALL_TRACEPOINT)) - set_tsk_thread_flag(p, TIF_SYSCALL_TRACEPOINT); + if (test_syscall_work(SYSCALL_TRACEPOINT)) + set_task_syscall_work(p, SYSCALL_TRACEPOINT); else - clear_tsk_thread_flag(p, TIF_SYSCALL_TRACEPOINT); + clear_task_syscall_work(p, SYSCALL_TRACEPOINT); } #else static inline void syscall_tracepoint_update(struct task_struct *p) |