From: Heiko Carstens <heiko.carstens@de.ibm.com>
Date: Fri, 15 Aug 2014 10:33:46 +0000 (+0200)
Subject: s390/ftrace: optimize function graph caller code
X-Git-Tag: fixes-against-v3.18-rc2~83^2~33
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2481a87b0250bbf429fc8cdc78331efbc44a0221;p=pandora-kernel.git

s390/ftrace: optimize function graph caller code

When the function graph tracer is disabled we can skip three additional
instructions. So let's just do this.

So if function tracing is enabled but function graph tracing is
runtime disabled, we get away with a single unconditional branch.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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