From: Steven Rostedt <srostedt@redhat.com>
Date: Tue, 24 Mar 2009 04:18:31 +0000 (-0400)
Subject: function-graph: prevent more than one tracer registering
X-Git-Tag: v2.6.30-rc1~2^2~13^3~12
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=05ce5818adee8f8efd0a5ca0d900a6789012516b;p=pandora-kernel.git

function-graph: prevent more than one tracer registering

Impact: prevent crash due to multiple function graph tracers

The function graph tracer can currently only handle a single tracer
being registered. If another tracer registers with the function
graph tracer it can crash the system.

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