From: Jiri Olsa <jolsa@redhat.com>
Date: Fri, 24 Sep 2010 15:41:02 +0000 (+0200)
Subject: tracing: Add proper check for irq_depth routines
X-Git-Tag: v2.6.37-rc1~214^2^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a9d61173dc1cb63e660ae89e874e51ba4fd2f991;p=pandora-kernel.git

tracing: Add proper check for irq_depth routines

The check_irq_entry and check_irq_return could be called
from graph event context. In such case there's no graph
private data allocated. Adding checks to handle this case.

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
LKML-Reference: <20100924154102.GB1818@jolsa.brq.redhat.com>

[ Fixed some grammar in the comments ]

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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