Commit-ID: b71b437eedaed985062492565d9d421d975ae845 Gitweb: http://git.kernel.org/tip/b71b437eedaed985062492565d9d421d975ae845 Author: Peter Zijlstra <[email protected]> AuthorDate: Mon, 2 Nov 2015 10:50:51 +0100 Committer: Ingo Molnar <[email protected]> CommitDate: Mon, 9 Nov 2015 16:13:11 +0100
perf: Fix inherited events vs. tracepoint filters Arnaldo reported that tracepoint filters seem to misbehave (ie. not apply) on inherited events. The fix is obvious; filters are only set on the actual (parent) event, use the normal pattern of using this parent event for filters. This is safe because each child event has a reference to it. Reported-by: Arnaldo Carvalho de Melo <[email protected]> Tested-by: Arnaldo Carvalho de Melo <[email protected]> Signed-off-by: Peter Zijlstra (Intel) <[email protected]> Cc: Adrian Hunter <[email protected]> Cc: Arnaldo Carvalho de Melo <[email protected]> Cc: David Ahern <[email protected]> Cc: Frédéric Weisbecker <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Linus Torvalds <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Steven Rostedt <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Wang Nan <[email protected]> Cc: [email protected] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Ingo Molnar <[email protected]> --- kernel/events/core.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/kernel/events/core.c b/kernel/events/core.c index f8e5c44..98a4b9d 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -6909,6 +6909,10 @@ static int perf_tp_filter_match(struct perf_event *event, { void *record = data->raw->data; + /* only top level events have filters set */ + if (event->parent) + event = event->parent; + if (likely(!event->filter) || filter_match_preds(event->filter, record)) return 1; return 0; -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
