From: Li Zefan <lizf@cn.fujitsu.com>
Date: Wed, 24 Mar 2010 02:57:37 +0000 (+0800)
Subject: tracing: Fix lockdep warning in global_clock()
X-Git-Tag: v2.6.34-rc4~77^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e36673ec5126f15a8cddf6049aede7bdcf484c26;p=pandora-kernel.git

tracing: Fix lockdep warning in global_clock()

# echo 1 > events/enable
 # echo global > trace_clock

------------[ cut here ]------------
WARNING: at kernel/lockdep.c:3162 check_flags+0xb2/0x190()
...
---[ end trace 3f86734a89416623 ]---
possible reason: unannotated irqs-on.
...

There's no reason to use the raw_local_irq_save() in trace_clock_global.
The local_irq_save() version is fine, and does not cause the bug in lockdep.

Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
LKML-Reference: <4BA97FA1.7030606@cn.fujitsu.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
---

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