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Subject[tip:perf/urgent] perf_event: Fix perf_swevent_hrtimer() variable initialization
Commit-ID:  21140f4d3387aa2213f1deea0128df1dbf924379
Gitweb: http://git.kernel.org/tip/21140f4d3387aa2213f1deea0128df1dbf924379
Author: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
AuthorDate: Thu, 10 Dec 2009 14:00:51 +0800
Committer: Ingo Molnar <mingo@elte.hu>
CommitDate: Thu, 10 Dec 2009 07:11:05 +0100

perf_event: Fix perf_swevent_hrtimer() variable initialization

fix:

[<c0477471>] ? printk+0x1d/0x24
[<c01c98f9>] ? perf_prepare_sample+0x269/0x280
[<c0149231>] warn_slowpath_common+0x71/0xd0
[<c01c98f9>] ? perf_prepare_sample+0x269/0x280
[<c01492aa>] warn_slowpath_null+0x1a/0x20
[<c01c98f9>] perf_prepare_sample+0x269/0x280
[<c016e9f3>] ? cpu_clock+0x53/0x90
[<c01cc368>] __perf_event_overflow+0x2a8/0x300
[<c01ccc3b>] perf_event_overflow+0x1b/0x30
[<c01ccccf>] perf_swevent_hrtimer+0x7f/0x120
This is because 'data.raw' variable not initialize.

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <4B208E93.1010801@cn.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
kernel/perf_event.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/kernel/perf_event.c b/kernel/perf_event.c
index 94e1b28..3a5d6c4 100644
--- a/kernel/perf_event.c
+++ b/kernel/perf_event.c
@@ -4010,6 +4010,7 @@ static enum hrtimer_restart perf_swevent_hrtimer(struct hrtimer *hrtimer)
event->pmu->read(event);

data.addr = 0;
+ data.raw = NULL;
data.period = event->hw.last_period;
regs = get_irq_regs();
/*

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