From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Fri, 9 May 2008 14:56:31 +0900 From: KAMEZAWA Hiroyuki Subject: [PATCH] memcg: make global var to be read_mostly Message-Id: <20080509145631.408a9a67.kamezawa.hiroyu@jp.fujitsu.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: LKML Cc: "linux-mm@kvack.org" , Andrew Morton , "balbir@linux.vnet.ibm.com" , "xemul@openvz.org" , lizf@cn.fujitsu.com, "yamamoto@valinux.co.jp" List-ID: An easy cut out from memcg: performance improvement patch set. Tested on: x86-64/linux-2.6.26-rc1-git6 Thanks, -Kame == mem_cgroup_subsys and page_cgroup_cache should be read_mostly and MEM_CGROUP_RECLAIM_RETRIES can be just a fixed number. Changelog: * makes MEM_CGROUP_RECLAIM_RETRIES to be a macro Signed-off-by: KAMEZAWA Hiroyuki Index: linux-2.6.26-rc1/mm/memcontrol.c =================================================================== --- linux-2.6.26-rc1.orig/mm/memcontrol.c +++ linux-2.6.26-rc1/mm/memcontrol.c @@ -35,9 +35,9 @@ #include -struct cgroup_subsys mem_cgroup_subsys; -static const int MEM_CGROUP_RECLAIM_RETRIES = 5; -static struct kmem_cache *page_cgroup_cache; +struct cgroup_subsys mem_cgroup_subsys __read_mostly; +static struct kmem_cache *page_cgroup_cache __read_mostly; +#define MEM_CGROUP_RECLAIM_RETRIES 5 /* * Statistics for memory cgroup. -- 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