From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:49181 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755967AbcBXDeA (ORCPT ); Tue, 23 Feb 2016 22:34:00 -0500 Subject: Patch "perf: Fix inherited events vs. tracepoint filters" has been added to the 3.14-stable tree To: peterz@infradead.org, acme@kernel.org, acme@redhat.com, adrian.hunter@intel.com, dsahern@gmail.com, fweisbec@gmail.com, gregkh@linuxfoundation.org, jolsa@kernel.org, jolsa@redhat.com, mingo@kernel.org, rostedt@goodmis.org, tglx@linutronix.de, torvalds@linux-foundation.org, wangnan0@huawei.com Cc: , From: Date: Tue, 23 Feb 2016 19:23:46 -0800 Message-ID: <145628422688161@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled perf: Fix inherited events vs. tracepoint filters to the 3.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: perf-fix-inherited-events-vs.-tracepoint-filters.patch and it can be found in the queue-3.14 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From b71b437eedaed985062492565d9d421d975ae845 Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Mon, 2 Nov 2015 10:50:51 +0100 Subject: perf: Fix inherited events vs. tracepoint filters MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Peter Zijlstra commit b71b437eedaed985062492565d9d421d975ae845 upstream. 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 Tested-by: Arnaldo Carvalho de Melo Signed-off-by: Peter Zijlstra (Intel) Cc: Adrian Hunter Cc: Arnaldo Carvalho de Melo Cc: David Ahern Cc: Frédéric Weisbecker Cc: Jiri Olsa Cc: Jiri Olsa Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Steven Rostedt Cc: Thomas Gleixner Cc: Wang Nan Link: http://lkml.kernel.org/r/20151102095051.GN17308@twins.programming.kicks-ass.net Signed-off-by: Ingo Molnar Signed-off-by: Greg Kroah-Hartman --- kernel/events/core.c | 4 ++++ 1 file changed, 4 insertions(+) --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -5945,6 +5945,10 @@ static int perf_tp_filter_match(struct p { 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; Patches currently in stable-queue which might be from peterz@infradead.org are queue-3.14/futex-drop-refcount-if-requeue_pi-acquired-the-rtmutex.patch queue-3.14/perf-fix-inherited-events-vs.-tracepoint-filters.patch