tree 24d446d16a2acf33c612ebf8856529607632bf37
parent 3564c7c45156b358efe921ab2e4e516dad92c94c
author KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> 1202372064 -0800
committer Linus Torvalds <torvalds@woody.linux-foundation.org> 1202402540 -0800

memory cgroup enhancements: add status accounting function for memory cgroup

Add statistics account infrastructure for memory controller.  All account
information is stored per-cpu and caller will not have to take lock or use
atomic ops.  This will be used by memory.stat file later.

CACHE includes swapcache now. I'd like to divide it to
PAGECACHE and SWAPCACHE later.

This patch adds 3 functions for accounting.
 * __mem_cgroup_stat_add() ... for usual routine.
 * __mem_cgroup_stat_add_safe ... for calling under irq_disabled section.
 * mem_cgroup_read_stat() ... for reading stat value.
 * renamed PAGECACHE to CACHE (because it may include swapcache *now*)

[akpm@linux-foundation.org: coding-style fixes]
[akpm@linux-foundation.org: fix smp_processor_id-in-preemptible]
[akpm@linux-foundation.org: uninline things]
[akpm@linux-foundation.org: remove dead code]
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
Cc: Balbir Singh <balbir@linux.vnet.ibm.com>
Cc: Pavel Emelianov <xemul@openvz.org>
Cc: Paul Menage <menage@google.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Kirill Korotaev <dev@sw.ru>
Cc: Herbert Poetzl <herbert@13thfloor.at>
Cc: David Rientjes <rientjes@google.com>
Cc: Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com>
Cc: Kirill Korotaev <dev@sw.ru>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Paul Menage <menage@google.com>
Cc: Pavel Emelianov <xemul@openvz.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com>
Cc: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>