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| author | Jiri Olsa <jolsa@redhat.com> | 2012-02-15 15:51:50 +0100 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2012-02-21 11:08:25 -0500 |
| commit | 489c75c3b333dfda4c8d2b7ad1b00e5da024bfa7 (patch) | |
| tree | beb0b36b48dfbbe389ea14e36be75b4837ad0cf1 | |
| parent | ceec0b6fc7cd43b38a40c2d40223f9cd0616f0cd (diff) | |
| download | op-kernel-dev-489c75c3b333dfda4c8d2b7ad1b00e5da024bfa7.zip op-kernel-dev-489c75c3b333dfda4c8d2b7ad1b00e5da024bfa7.tar.gz | |
ftrace, perf: Add add/del tracepoint perf registration actions
Adding TRACE_REG_PERF_ADD and TRACE_REG_PERF_DEL to handle
perf event schedule in/out actions.
The add action is invoked for when the perf event is scheduled in,
while the del action is invoked when the event is scheduled out.
Link: http://lkml.kernel.org/r/1329317514-8131-4-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>
| -rw-r--r-- | include/linux/ftrace_event.h | 2 | ||||
| -rw-r--r-- | kernel/trace/trace_event_perf.c | 4 | ||||
| -rw-r--r-- | kernel/trace/trace_events.c | 2 | ||||
| -rw-r--r-- | kernel/trace/trace_kprobe.c | 2 | ||||
| -rw-r--r-- | kernel/trace/trace_syscalls.c | 4 |
5 files changed, 13 insertions, 1 deletions
diff --git a/include/linux/ftrace_event.h b/include/linux/ftrace_event.h index 195e360..2bf677c 100644 --- a/include/linux/ftrace_event.h +++ b/include/linux/ftrace_event.h @@ -148,6 +148,8 @@ enum trace_reg { TRACE_REG_PERF_UNREGISTER, TRACE_REG_PERF_OPEN, TRACE_REG_PERF_CLOSE, + TRACE_REG_PERF_ADD, + TRACE_REG_PERF_DEL, }; struct ftrace_event_call; diff --git a/kernel/trace/trace_event_perf.c b/kernel/trace/trace_event_perf.c index 0cfcc37..d72af0b 100644 --- a/kernel/trace/trace_event_perf.c +++ b/kernel/trace/trace_event_perf.c @@ -211,12 +211,14 @@ int perf_trace_add(struct perf_event *p_event, int flags) list = this_cpu_ptr(pcpu_list); hlist_add_head_rcu(&p_event->hlist_entry, list); - return 0; + return tp_event->class->reg(tp_event, TRACE_REG_PERF_ADD, p_event); } void perf_trace_del(struct perf_event *p_event, int flags) { + struct ftrace_event_call *tp_event = p_event->tp_event; hlist_del_rcu(&p_event->hlist_entry); + tp_event->class->reg(tp_event, TRACE_REG_PERF_DEL, p_event); } __kprobes void *perf_trace_buf_prepare(int size, unsigned short type, diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c index 5138fea..079a93a 100644 --- a/kernel/trace/trace_events.c +++ b/kernel/trace/trace_events.c @@ -173,6 +173,8 @@ int ftrace_event_reg(struct ftrace_event_call *call, return 0; case TRACE_REG_PERF_OPEN: case TRACE_REG_PERF_CLOSE: + case TRACE_REG_PERF_ADD: + case TRACE_REG_PERF_DEL: return 0; #endif } diff --git a/kernel/trace/trace_kprobe.c b/kernel/trace/trace_kprobe.c index 5667f89..580a05e 100644 --- a/kernel/trace/trace_kprobe.c +++ b/kernel/trace/trace_kprobe.c @@ -1912,6 +1912,8 @@ int kprobe_register(struct ftrace_event_call *event, return 0; case TRACE_REG_PERF_OPEN: case TRACE_REG_PERF_CLOSE: + case TRACE_REG_PERF_ADD: + case TRACE_REG_PERF_DEL: return 0; #endif } diff --git a/kernel/trace/trace_syscalls.c b/kernel/trace/trace_syscalls.c index e23515f..96fc733 100644 --- a/kernel/trace/trace_syscalls.c +++ b/kernel/trace/trace_syscalls.c @@ -666,6 +666,8 @@ static int syscall_enter_register(struct ftrace_event_call *event, return 0; case TRACE_REG_PERF_OPEN: case TRACE_REG_PERF_CLOSE: + case TRACE_REG_PERF_ADD: + case TRACE_REG_PERF_DEL: return 0; #endif } @@ -690,6 +692,8 @@ static int syscall_exit_register(struct ftrace_event_call *event, return 0; case TRACE_REG_PERF_OPEN: case TRACE_REG_PERF_CLOSE: + case TRACE_REG_PERF_ADD: + case TRACE_REG_PERF_DEL: return 0; #endif } |
