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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 /kernel/trace/trace_event_perf.c | |
| parent | ceec0b6fc7cd43b38a40c2d40223f9cd0616f0cd (diff) | |
| download | linux-489c75c3b333dfda4c8d2b7ad1b00e5da024bfa7.tar.gz linux-489c75c3b333dfda4c8d2b7ad1b00e5da024bfa7.tar.xz | |
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>
Diffstat (limited to 'kernel/trace/trace_event_perf.c')
| -rw-r--r-- | kernel/trace/trace_event_perf.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/kernel/trace/trace_event_perf.c b/kernel/trace/trace_event_perf.c index 0cfcc37f63de..d72af0b03822 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, |