From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail202.messagelabs.com (mail202.messagelabs.com [216.82.254.227]) by kanga.kvack.org (Postfix) with ESMTP id 003C86B0085 for ; Wed, 27 Oct 2010 04:47:36 -0400 (EDT) From: Mel Gorman Subject: [PATCH 0/2] Reduce the amount of time spent in watermark-related functions Date: Wed, 27 Oct 2010 09:47:34 +0100 Message-Id: <1288169256-7174-1-git-send-email-mel@csn.ul.ie> Sender: owner-linux-mm@kvack.org To: Andrew Morton Cc: Shaohua Li , KOSAKI Motohiro , Christoph Lameter , David Rientjes , KAMEZAWA Hiroyuki , LKML , Linux-MM , Mel Gorman List-ID: The following two patches are in response to a bug report by Shaohua Li where the amount of time spent in zone_nr_free_pages() is unacceptable for large machines. All the background is in the first patches leader. The second patch replaces two setter functions with one function that takes a callback function as a parameter. Mel Gorman (2): mm: page allocator: Adjust the per-cpu counter threshold when memory is low mm: vmstat: Use a single setter function and callback for adjusting percpu thresholds include/linux/mmzone.h | 10 +++------- include/linux/vmstat.h | 7 +++++++ mm/mmzone.c | 21 --------------------- mm/page_alloc.c | 35 +++++++++++++++++++++++++++-------- mm/vmscan.c | 25 +++++++++++++++---------- mm/vmstat.c | 32 +++++++++++++++++++++++++++++--- 6 files changed, 81 insertions(+), 49 deletions(-) -- 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