This is a note to let you know that I've just added the patch titled
perf: Handle stopped state with tracepoints
to the 2.6.32-longterm tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/longterm/longterm-queue-2.6.32.git;a=summary
The filename of the patch is:
perf-handle-stopped-state-with-tracepoints.patch
and it can be found in the queue-2.6.32 subdirectory.
If you, or anyone else, feels it should not be added to the 2.6.32 longterm
tree,
please let <[email protected]> know about it.
>From a0f7d0f7fc02465bb9758501f611f63381792996 Mon Sep 17 00:00:00 2001
From: Frederic Weisbecker <[email protected]>
Date: Mon, 7 Mar 2011 21:27:09 +0100
Subject: perf: Handle stopped state with tracepoints
From: Frederic Weisbecker <[email protected]>
commit a0f7d0f7fc02465bb9758501f611f63381792996 upstream.
We toggle the state from start and stop callbacks but actually
don't check it when the event triggers. Do it so that
these callbacks actually work.
Signed-off-by: Frederic Weisbecker <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Stephane Eranian <[email protected]>
Signed-off-by: Peter Zijlstra <[email protected]>
LKML-Reference: <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
kernel/perf_event.c | 2 ++
1 file changed, 2 insertions(+)
--- a/kernel/perf_event.c
+++ b/kernel/perf_event.c
@@ -4167,6 +4167,8 @@ static void tp_perf_event_destroy(struct
static const struct pmu *tp_perf_event_init(struct perf_event *event)
{
+ if (event->hw.state & PERF_HES_STOPPED)
+ return 0;
/*
* Raw tracepoint data is a severe data leak, only allow root to
* have these.
Patches currently in longterm-queue-2.6.32 which might be from
[email protected] are
/home/gregkh/linux/longterm/longterm-queue-2.6.32/queue-2.6.32/perf-handle-stopped-state-with-tracepoints.patch
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