From: Zhaolei <zhaolei@cn.fujitsu.com>
Date: Tue, 31 Mar 2009 07:26:14 +0000 (+0800)
Subject: ftrace: clean up enable logic for sched_switch
X-Git-Tag: v2.6.31-rc1~401^2~186
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=dcef788eb9659b61a2110284fcce3ca6e63480d2;p=pandora-kernel.git

ftrace: clean up enable logic for sched_switch

Unify sched_switch and sched_wakeup's action to following logic:
Do record_cmdline when start_cmdline_record() is called.
Start tracing events when the tracer is started.

Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
LKML-Reference: <49D1C596.5050203@cn.fujitsu.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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