From: Markus Metzger <markus.t.metzger@intel.com>
Date: Fri, 13 Mar 2009 09:48:52 +0000 (+0100)
Subject: x86, hw-branch-tracer: keep resources on stop
X-Git-Tag: v2.6.31-rc1~401^2~62^2~32
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ba9372a8f306c4e53a5f61dcbcd6c1e4a8c2e9ac;p=pandora-kernel.git

x86, hw-branch-tracer: keep resources on stop

Distinguish init/reset and start/stop:

init/reset will allocate and release bts tracing resources
stop/start will suspend and resume bts tracing

Return an error on init() if no cpu can be traced.

Signed-off-by: Markus Metzger <markus.t.metzger@intel.com>
LKML-Reference: <20090313104852.A30168@sedona.ch.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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