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ftrace: ensure every event gets an id

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Impact: widen user-space visibe event IDs to all events

Previously only TRACE_EVENT events got ids, because only they
generated raw output which needs to be demuxed from the trace.

In order to provide a unique ID for each event, register everybody,
regardless.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
LKML-Reference: <20090319194233.464914218@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Peter Zijlstra 2009-03-19 20:26:14 +01:00 • committed by Ingo Molnar
parent 23725aeeab
commit 28bea271e5
2 changed files with 19 additions and 1 deletions
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5
kernel/trace/trace_output.c
View file

@ -481,6 +481,11 @@ int register_ftrace_event(struct trace_event *event)
mutex_lock(&trace_event_mutex);
if (!event) {
ret = next_event_type++;
goto out;
}
if (!event->type)
event->type = next_event_type++;
else if (event->type > __TRACE_LAST_TYPE) {