tree 08bf7cf0c04256df0cf5c1f100bc4778ec928fba
parent d52f2dc40b52201700001e868093c5ec827a8f33
author Michael Neuling <mikey@neuling.org> 1368470697 +0000
committer Benjamin Herrenschmidt <benh@kernel.crashing.org> 1368511222 +1000

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>