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authorJiri Olsa <jolsa@redhat.com>2012-02-15 15:51:49 +0100
committerSteven Rostedt <rostedt@goodmis.org>2012-02-21 11:08:24 -0500
commitceec0b6fc7cd43b38a40c2d40223f9cd0616f0cd (patch)
tree31e7deb76a5827883251dc578300bdc35ef62538 /kernel/trace/trace_kprobe.c
parente248491ac283b516958ca9ab62c8e74b6718bca8 (diff)
downloadop-kernel-dev-ceec0b6fc7cd43b38a40c2d40223f9cd0616f0cd.zip
op-kernel-dev-ceec0b6fc7cd43b38a40c2d40223f9cd0616f0cd.tar.gz
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_kprobe.c')
-rw-r--r--kernel/trace/trace_kprobe.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/kernel/trace/trace_kprobe.c b/kernel/trace/trace_kprobe.c
index 00d527c..5667f89 100644
--- a/kernel/trace/trace_kprobe.c
+++ b/kernel/trace/trace_kprobe.c
@@ -1892,7 +1892,8 @@ static __kprobes void kretprobe_perf_func(struct kretprobe_instance *ri,
#endif /* CONFIG_PERF_EVENTS */
static __kprobes
-int kprobe_register(struct ftrace_event_call *event, enum trace_reg type)
+int kprobe_register(struct ftrace_event_call *event,
+ enum trace_reg type, void *data)
{
struct trace_probe *tp = (struct trace_probe *)event->data;
@@ -1909,6 +1910,9 @@ int kprobe_register(struct ftrace_event_call *event, enum trace_reg type)
case TRACE_REG_PERF_UNREGISTER:
disable_trace_probe(tp, TP_FLAG_PROFILE);
return 0;
+ case TRACE_REG_PERF_OPEN:
+ case TRACE_REG_PERF_CLOSE:
+ return 0;
#endif
}
return 0;
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