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| author |   Sergey Matyukevich <sergey.matyukevich@synopsys.com> | 2022-04-14 11:17:23 +0300 |
|---|---|---|
| committer |   Vineet Gupta <vgupta@kernel.org> | 2022-04-25 13:09:47 -0700 |
| commit | fb0b54909b153ac6195378fa8ddee3f7531f8e51 (patch) | |
| tree | 7d74e0f30de818900f5b8f9a4e160ac96e64b593 /arch/arc/include | |
| parent | ARC: enable HAVE_REGS_AND_STACK_ACCESS_API feature (diff) | |
| download | linux-dev-fb0b54909b153ac6195378fa8ddee3f7531f8e51.tar.xz linux-dev-fb0b54909b153ac6195378fa8ddee3f7531f8e51.zip | |
ARC: implement syscall tracepoints
Implement all the bits required to support HAVE_SYSCALL_TRACEPOINTS
according to Documentation/trace/ftrace-design.rst.
Signed-off-by: Sergey Matyukevich <sergey.matyukevich@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@kernel.org>
Diffstat (limited to 'arch/arc/include')
| -rw-r--r-- | arch/arc/include/asm/syscall.h | 2 | ||||
| -rw-r--r-- | arch/arc/include/asm/thread_info.h | 5 |
2 files changed, 6 insertions, 1 deletions
diff --git a/arch/arc/include/asm/syscall.h b/arch/arc/include/asm/syscall.h index 94529e89dff0..9709256e31c8 100644 --- a/arch/arc/include/asm/syscall.h +++ b/arch/arc/include/asm/syscall.h @@ -12,6 +12,8 @@ #include <asm/unistd.h> #include <asm/ptrace.h> /* in_syscall() */ +extern void *sys_call_table[]; + static inline long syscall_get_nr(struct task_struct *task, struct pt_regs *regs) { diff --git a/arch/arc/include/asm/thread_info.h b/arch/arc/include/asm/thread_info.h index 1e0b2e3914d5..6ba7fe417095 100644 --- a/arch/arc/include/asm/thread_info.h +++ b/arch/arc/include/asm/thread_info.h @@ -78,9 +78,9 @@ static inline __attribute_const__ struct thread_info *current_thread_info(void) #define TIF_SYSCALL_AUDIT 4 /* syscall auditing active */ #define TIF_NOTIFY_SIGNAL 5 /* signal notifications exist */ #define TIF_SYSCALL_TRACE 15 /* syscall trace active */ - /* true if poll_idle() is polling TIF_NEED_RESCHED */ #define TIF_MEMDIE 16 +#define TIF_SYSCALL_TRACEPOINT 17 /* syscall tracepoint instrumentation */ #define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE) #define _TIF_NOTIFY_RESUME (1<<TIF_NOTIFY_RESUME) @@ -89,11 +89,14 @@ static inline __attribute_const__ struct thread_info *current_thread_info(void) #define _TIF_SYSCALL_AUDIT (1<<TIF_SYSCALL_AUDIT) #define _TIF_NOTIFY_SIGNAL (1<<TIF_NOTIFY_SIGNAL) #define _TIF_MEMDIE (1<<TIF_MEMDIE) +#define _TIF_SYSCALL_TRACEPOINT (1<<TIF_SYSCALL_TRACEPOINT) /* work to do on interrupt/exception return */ #define _TIF_WORK_MASK (_TIF_NEED_RESCHED | _TIF_SIGPENDING | \ _TIF_NOTIFY_RESUME | _TIF_NOTIFY_SIGNAL) +#define _TIF_SYSCALL_WORK (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_TRACEPOINT) + /* * _TIF_ALLWORK_MASK includes SYSCALL_TRACE, but we don't need it. * SYSCALL_TRACE is anyway separately/unconditionally tested right after a |