From: Michael Neuling <mikey@neuling.org>
Date: Mon, 13 May 2013 18:44:57 +0000 (+0000)
Subject: powerpc/pmu: Fix order of interpreting BHRB target entries
X-Git-Tag: v3.10-rc2~31^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=506e70d13236dfdb0bc15e0914298ab0a7b7f4df;p=pandora-kernel.git

powerpc/pmu: Fix order of interpreting BHRB target entries

The current Branch History Rolling Buffer (BHRB) code misinterprets the order
of entries in the hardware buffer.  It assumes that a branch target address
will be read _after_ its corresponding branch.  In reality the branch target
comes before (lower mfbhrb entry) it's corresponding branch.

This is a rewrite of the code to take this into account.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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