From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail137.messagelabs.com (mail137.messagelabs.com [216.82.249.19]) by kanga.kvack.org (Postfix) with SMTP id 828BB6B0012 for ; Thu, 28 Apr 2011 09:38:43 -0400 (EDT) Date: Thu, 28 Apr 2011 21:38:38 +0800 From: Wu Fengguang Subject: [patch] vmstat: account page allocation failures Message-ID: <20110428133838.GA12573@localhost> References: <20110426055521.GA18473@localhost> <20110426062535.GB19717@localhost> <20110426063421.GC19717@localhost> <20110426092029.GA27053@localhost> <20110426124743.e58d9746.akpm@linux-foundation.org> <20110428133644.GA12400@localhost> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20110428133644.GA12400@localhost> Sender: owner-linux-mm@kvack.org List-ID: To: Andrew Morton Cc: Minchan Kim , Dave Young , linux-mm , Linux Kernel Mailing List , Mel Gorman , KAMEZAWA Hiroyuki , KOSAKI Motohiro , Christoph Lameter , Dave Chinner , David Rientjes Just for your reference. It seems not necessary given that page allocation failure rate is no long high. Signed-off-by: Wu Fengguang --- include/linux/mmzone.h | 1 + mm/page_alloc.c | 2 ++ mm/vmstat.c | 1 + 3 files changed, 4 insertions(+) --- linux-next.orig/include/linux/mmzone.h 2011-04-28 21:34:30.000000000 +0800 +++ linux-next/include/linux/mmzone.h 2011-04-28 21:34:35.000000000 +0800 @@ -106,6 +106,7 @@ enum zone_stat_item { NR_SHMEM, /* shmem pages (included tmpfs/GEM pages) */ NR_DIRTIED, /* page dirtyings since bootup */ NR_WRITTEN, /* page writings since bootup */ + NR_ALLOC_FAIL, #ifdef CONFIG_NUMA NUMA_HIT, /* allocated in intended node */ NUMA_MISS, /* allocated in non intended node */ --- linux-next.orig/mm/page_alloc.c 2011-04-28 21:34:34.000000000 +0800 +++ linux-next/mm/page_alloc.c 2011-04-28 21:34:35.000000000 +0800 @@ -2165,6 +2165,8 @@ rebalance: } nopage: + inc_zone_state(preferred_zone, NR_ALLOC_FAIL); + /* count_zone_vm_events(PGALLOCFAIL, preferred_zone, 1 << order); */ if (!(gfp_mask & __GFP_NOWARN) && printk_ratelimit()) { unsigned int filter = SHOW_MEM_FILTER_NODES; --- linux-next.orig/mm/vmstat.c 2011-04-28 21:34:30.000000000 +0800 +++ linux-next/mm/vmstat.c 2011-04-28 21:34:35.000000000 +0800 @@ -879,6 +879,7 @@ static const char * const vmstat_text[] "nr_shmem", "nr_dirtied", "nr_written", + "nr_alloc_fail", #ifdef CONFIG_NUMA "numa_hit", -- 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org