linux-kernel - Re: [PATCH] memcg: doc the pagefault count

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Date:	Fri, 4 Nov 2011 18:54:37 +0900
From:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
To:	Wanlong Gao <gaowanlong@...fujitsu.com>
Cc:	linux-kernel@...r.kernel.org, cgroups@...r.kernel.org,
	akpm@...ux-foundation.org, yinghan@...gle.com
Subject: Re: [PATCH] memcg: doc the pagefault count

On Fri, 4 Nov 2011 17:15:21 +0800
Wanlong Gao <gaowanlong@...fujitsu.com> wrote:

> Pagefault count has added to memcg stats since commit 456f998e,
> but forgot to doc it.
> 
> Signed-off-by: Wanlong Gao <gaowanlong@...fujitsu.com>

Thanks,
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>

> ---
>  Documentation/cgroups/memory.txt |    7 +++++++
>  1 files changed, 7 insertions(+), 0 deletions(-)
> 
> diff --git a/Documentation/cgroups/memory.txt b/Documentation/cgroups/memory.txt
> index cc0ebc5..081f4f44 100644
> --- a/Documentation/cgroups/memory.txt
> +++ b/Documentation/cgroups/memory.txt
> @@ -389,6 +389,13 @@ mapped_file	- # of bytes of mapped file (includes tmpfs/shmem)
>  pgpgin		- # of pages paged in (equivalent to # of charging events).
>  pgpgout		- # of pages paged out (equivalent to # of uncharging events).
>  swap		- # of bytes of swap usage
> +
> +pgfault		- # of page-faults
> +pgmajfault	- # of major page-faults
> +		These two are different from "pgpgin"/"pgpgout" stat which
> +		count number of pages charged/discharged to the cgroup and
> +		have no meaning of reading/writing page to disk.
> +




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