diff options
| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2009-03-19 22:26:15 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-03-20 12:17:07 +0300 |
| commit | ac199db0189c091f2863312061c0575937f68810 (patch) | |
| tree | 0068aaa77ca00102ca60754eb32329f06821bba0 /kernel/trace/trace_event_profile.c | |
| parent | 28bea271e58e429eccfad3d7ee2ad12d6ee015bf (diff) | |
| download | linux-ac199db0189c091f2863312061c0575937f68810.tar.xz | |
ftrace: event profile hooks
Impact: new tracing infrastructure feature
Provide infrastructure to generate software perf counter events
from tracepoints.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
LKML-Reference: <20090319194233.557364871@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/trace/trace_event_profile.c')
| -rw-r--r-- | kernel/trace/trace_event_profile.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/kernel/trace/trace_event_profile.c b/kernel/trace/trace_event_profile.c new file mode 100644 index 000000000000..22cba9970776 --- /dev/null +++ b/kernel/trace/trace_event_profile.c @@ -0,0 +1,31 @@ +/* + * trace event based perf counter profiling + * + * Copyright (C) 2009 Red Hat Inc, Peter Zijlstra <pzijlstr@redhat.com> + * + */ + +#include "trace.h" + +int ftrace_profile_enable(int event_id) +{ + struct ftrace_event_call *event; + + for_each_event(event) { + if (event->id == event_id) + return event->profile_enable(event); + } + + return -EINVAL; +} + +void ftrace_profile_disable(int event_id) +{ + struct ftrace_event_call *event; + + for_each_event(event) { + if (event->id == event_id) + return event->profile_disable(event); + } +} + |