linux-kernel - [tip:perf/core] x86/mmiotrace: Remove redundant instruction prefix checks

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Message-ID: <tip-841bca1393d315d79077f272c2918423e36dc364@git.kernel.org>
Date:	Sun, 23 May 2010 09:25:45 GMT
From:	tip-bot for Akinobu Mita <akinobu.mita@...il.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com,
	pq@....fi, akinobu.mita@...il.com, tglx@...utronix.de,
	mingo@...e.hu
Subject: [tip:perf/core] x86/mmiotrace: Remove redundant instruction prefix checks

Commit-ID:  841bca1393d315d79077f272c2918423e36dc364
Gitweb:     http://git.kernel.org/tip/841bca1393d315d79077f272c2918423e36dc364
Author:     Akinobu Mita <akinobu.mita@...il.com>
AuthorDate: Tue, 18 May 2010 08:48:30 +0900
Committer:  Ingo Molnar <mingo@...e.hu>
CommitDate: Sun, 23 May 2010 11:02:43 +0200

x86/mmiotrace: Remove redundant instruction prefix checks

Get rid of the duplicated entries in prefix_codes[]
to eliminate redundant checks by skip_prefix().

Signed-off-by: Akinobu Mita <akinobu.mita@...il.com>
Acked-by: Pekka Paalanen <pq@....fi>
LKML-Reference: <1274140110-5841-1-git-send-email-akinobu.mita@...il.com>
Signed-off-by: Ingo Molnar <mingo@...e.hu>
---
 arch/x86/mm/pf_in.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/mm/pf_in.c b/arch/x86/mm/pf_in.c
index df3d5c8..308e325 100644
--- a/arch/x86/mm/pf_in.c
+++ b/arch/x86/mm/pf_in.c
@@ -34,7 +34,7 @@
 /* IA32 Manual 3, 2-1 */
 static unsigned char prefix_codes[] = {
 	0xF0, 0xF2, 0xF3, 0x2E, 0x36, 0x3E, 0x26, 0x64,
-	0x65, 0x2E, 0x3E, 0x66, 0x67
+	0x65, 0x66, 0x67
 };
 /* IA32 Manual 3, 3-432*/
 static unsigned int reg_rop[] = {
--
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