[PATCH v4 3/4] memcg: rework usage of stats by soft limit

[KAMEZAWA Hiroyuki]

On Sun, 27 Dec 2009 04:09:01 +0200
"Kirill A. Shutemov" <kirill at shutemov.name> wrote:

> Instead of incrementing counter on each page in/out and comparing it
> with constant, we set counter to constant, decrement counter on each
> page in/out and compare it with zero. We want to make comparing as fast
> as possible. On many RISC systems (probably not only RISC) comparing
> with zero is more effective than comparing with a constant, since not
> every constant can be immediate operand for compare instruction.
> 
> Also, I've renamed MEM_CGROUP_STAT_EVENTS to MEM_CGROUP_STAT_SOFTLIMIT,
> since really it's not a generic counter.
> 
> Signed-off-by: Kirill A. Shutemov <kirill at shutemov.name>

I have to sort out these counter stuff after this. But now,

Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu at jp.fujitsu.com>