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| author | Jiri Olsa <jolsa@redhat.com> | 2012-02-15 15:51:49 +0100 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2012-02-21 17:08:24 +0100 |
| commit | ceec0b6fc7cd43b38a40c2d40223f9cd0616f0cd (patch) | |
| tree | 31e7deb76a5827883251dc578300bdc35ef62538 /kernel/trace/trace_syscalls.c | |
| parent | ftrace: Add enable/disable ftrace_ops control interface (diff) | |
| download | linux-ceec0b6fc7cd43b38a40c2d40223f9cd0616f0cd.tar.xz linux-ceec0b6fc7cd43b38a40c2d40223f9cd0616f0cd.zip | |
ftrace, perf: Add open/close tracepoint perf registration actions
Adding TRACE_REG_PERF_OPEN and TRACE_REG_PERF_CLOSE to differentiate
register/unregister from open/close actions.
The register/unregister actions are invoked for the first/last
tracepoint user when opening/closing the event.
The open/close actions are invoked for each tracepoint user when
opening/closing the event.
Link: http://lkml.kernel.org/r/1329317514-8131-3-git-send-email-jolsa@redhat.com
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/trace_syscalls.c')
| -rw-r--r-- | kernel/trace/trace_syscalls.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/kernel/trace/trace_syscalls.c b/kernel/trace/trace_syscalls.c index 43500153dd1e..e23515f51ed4 100644 --- a/kernel/trace/trace_syscalls.c +++ b/kernel/trace/trace_syscalls.c @@ -17,9 +17,9 @@ static DECLARE_BITMAP(enabled_enter_syscalls, NR_syscalls); static DECLARE_BITMAP(enabled_exit_syscalls, NR_syscalls); static int syscall_enter_register(struct ftrace_event_call *event, - enum trace_reg type); + enum trace_reg type, void *data); static int syscall_exit_register(struct ftrace_event_call *event, - enum trace_reg type); + enum trace_reg type, void *data); static int syscall_enter_define_fields(struct ftrace_event_call *call); static int syscall_exit_define_fields(struct ftrace_event_call *call); @@ -649,7 +649,7 @@ void perf_sysexit_disable(struct ftrace_event_call *call) #endif /* CONFIG_PERF_EVENTS */ static int syscall_enter_register(struct ftrace_event_call *event, - enum trace_reg type) + enum trace_reg type, void *data) { switch (type) { case TRACE_REG_REGISTER: @@ -664,13 +664,16 @@ static int syscall_enter_register(struct ftrace_event_call *event, case TRACE_REG_PERF_UNREGISTER: perf_sysenter_disable(event); return 0; + case TRACE_REG_PERF_OPEN: + case TRACE_REG_PERF_CLOSE: + return 0; #endif } return 0; } static int syscall_exit_register(struct ftrace_event_call *event, - enum trace_reg type) + enum trace_reg type, void *data) { switch (type) { case TRACE_REG_REGISTER: @@ -685,6 +688,9 @@ static int syscall_exit_register(struct ftrace_event_call *event, case TRACE_REG_PERF_UNREGISTER: perf_sysexit_disable(event); return 0; + case TRACE_REG_PERF_OPEN: + case TRACE_REG_PERF_CLOSE: + return 0; #endif } return 0; |