Messages in this thread Patch in this message | | | Date | Fri, 9 May 2008 14:56:31 +0900 | From | KAMEZAWA Hiroyuki <> | Subject | [PATCH] memcg: make global var to be read_mostly |
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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 <kamezawa.hiroyu@jp.fujitsu.com>
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 <asm/uaccess.h> -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.
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