From 69399ee9cbcb00bbdd9ff6fafafde23ef404d40f Mon Sep 17 00:00:00 2001
From: Kevin Hao <haokexin@gmail.com>
Date: Thu, 13 Aug 2015 19:51:36 +0800
Subject: [PATCH] powerpc/e6500: hw tablewalk: optimize a bit for tcd lock
 acquiring codes

It makes no sense to put the instructions for calculating the lock
value (cpu number + 1) and the clearing of eq bit of cr1 in lbarx/stbcx
loop. And when the lock is acquired by the other thread, the current
lock value has no chance to equal with the lock value used by current
cpu. So we can skip the comparing for these two lock values in the
lbz/bne loop.

Signed-off-by: Kevin Hao <haokexin@gmail.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>
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