From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail203.messagelabs.com (mail203.messagelabs.com [216.82.254.243]) by kanga.kvack.org (Postfix) with ESMTP id A5EE55F000E for ; Mon, 20 Apr 2009 18:20:07 -0400 (EDT) From: Mel Gorman Subject: [PATCH 12/25] Remove a branch by assuming __GFP_HIGH == ALLOC_HIGH Date: Mon, 20 Apr 2009 23:19:58 +0100 Message-Id: <1240266011-11140-13-git-send-email-mel@csn.ul.ie> In-Reply-To: <1240266011-11140-1-git-send-email-mel@csn.ul.ie> References: <1240266011-11140-1-git-send-email-mel@csn.ul.ie> Sender: owner-linux-mm@kvack.org To: Mel Gorman , Linux Memory Management List Cc: KOSAKI Motohiro , Christoph Lameter , Nick Piggin , Linux Kernel Mailing List , Lin Ming , Zhang Yanmin , Peter Zijlstra , Pekka Enberg , Andrew Morton List-ID: Allocations that specify __GFP_HIGH get the ALLOC_HIGH flag. If these flags are equal to each other, we can eliminate a branch. [akpm@linux-foundation.org: Suggested the hack] Signed-off-by: Mel Gorman --- mm/page_alloc.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 51e1ded..b13fc29 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -1639,8 +1639,8 @@ gfp_to_alloc_flags(gfp_t gfp_mask) * policy or is asking for __GFP_HIGH memory. GFP_ATOMIC requests will * set both ALLOC_HARDER (!wait) and ALLOC_HIGH (__GFP_HIGH). */ - if (gfp_mask & __GFP_HIGH) - alloc_flags |= ALLOC_HIGH; + VM_BUG_ON(__GFP_HIGH != ALLOC_HIGH); + alloc_flags |= (gfp_mask & __GFP_HIGH); if (!wait) { alloc_flags |= ALLOC_HARDER; -- 1.5.6.5 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org