From: Dave Airlie <airlied@redhat.com>
Date: Wed, 19 Sep 2012 01:12:41 +0000 (+1000)
Subject: drm: micro optimise cache flushing
X-Git-Tag: omap-for-v3.7-rc1/fixes-cpufreq-signed~20^2~16
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=87229ad9de079cb12ee09a3dc16113c390b729d5;p=pandora-kernel.git

drm: micro optimise cache flushing

We hit this a lot with i915 and although we'd like to engineer things to hit
it a lot less, this commit at least makes it consume a few less cycles.

from something containing
movzwl 0x0(%rip),%r10d
to
add    %r8,%rdx

I only noticed it while using perf to profile something else.

Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Dave Airlie <airlied@redhat.com>
---

Reading git-diff-tree failed