per-zone and reclaim enhancements for memory controller: per-zone active inactive counter

This patch adds per-zone status in memory cgroup.  These values are often read
(as per-zone value) by page reclaiming.

In current design, per-zone stat is just a unsigned long value and not an
atomic value because they are modified only under lru_lock.  (So, atomic_ops
is not necessary.)

This patch adds ACTIVE and INACTIVE per-zone status values.

For handling per-zone status, this patch adds
  struct mem_cgroup_per_zone {
		...
  }
and some helper functions. This will be useful to add per-zone objects
in mem_cgroup.

This patch turns memory controller's early_init to be 0 for calling
kmalloc() in initialization.

Acked-by: Balbir Singh <[email protected]>
Signed-off-by: KAMEZAWA Hiroyuki <[email protected]>
Cc: "Eric W. Biederman" <[email protected]>
Cc: David Rientjes <[email protected]>
Cc: Herbert Poetzl <[email protected]>
Cc: Kirill Korotaev <[email protected]>
Cc: Nick Piggin <[email protected]>
Cc: Paul Menage <[email protected]>
Cc: Pavel Emelianov <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Vaidyanathan Srinivasan <[email protected]>
Cc: Rik van Riel <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

0 files changed, 0 insertions, 0 deletions