From: Steven Rostedt <srostedt@redhat.com>
Date: Tue, 17 Mar 2009 23:59:53 +0000 (-0400)
Subject: tracing: make sched_switch stop/start light weight
X-Git-Tag: v2.6.30-rc1~2^2~27^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5fec6ddcb43a91aa9a254c8ecf174c803de6f07e;p=pandora-kernel.git

tracing: make sched_switch stop/start light weight

The stopping and starting of a tracer should be light weight and
be able to be called in all contexts. The sched_switch grabbed
mutexes in the start/stop functions. This patch changes it to a
simple variable, on/off.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
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