From: Andrew Morton <akpm@linux-foundation.org>
To: Johannes Weiner <hannes@cmpxchg.org>
Cc: Vladimir Davydov <vdavydov@virtuozzo.com>,
Michal Hocko <mhocko@suse.cz>,
linux-mm@kvack.org, cgroups@vger.kernel.org,
linux-kernel@vger.kernel.org, kernel-team@fb.com
Subject: Re: [PATCH] mm: memcontrol: drop superfluous entry in the per-memcg stats array
Date: Tue, 26 Jan 2016 13:30:24 -0800 [thread overview]
Message-ID: <20160126133024.07f372dbf8935e03a3035269@linux-foundation.org> (raw)
In-Reply-To: <1453841729-29072-1-git-send-email-hannes@cmpxchg.org>
On Tue, 26 Jan 2016 15:55:29 -0500 Johannes Weiner <hannes@cmpxchg.org> wrote:
> MEM_CGROUP_STAT_NSTATS is just a delimiter for cgroup1 statistics, not
> an actual array entry. Reuse it for the first cgroup2 stat entry, like
> in the event array.
>
> ...
>
> --- a/include/linux/memcontrol.h
> +++ b/include/linux/memcontrol.h
> @@ -51,7 +51,7 @@ enum mem_cgroup_stat_index {
> MEM_CGROUP_STAT_SWAP, /* # of pages, swapped out */
> MEM_CGROUP_STAT_NSTATS,
> /* default hierarchy stats */
> - MEMCG_SOCK,
> + MEMCG_SOCK = MEM_CGROUP_STAT_NSTATS,
> MEMCG_NR_STAT,
> };
The code looks a bit odd. How come mem_cgroup_stat_names[] ends with
"swap"? Should MEMCG_SOCK be in there at all?
And the naming is a bit sad. "MEM_CGROUP_STAT_FILE_MAPPED" maps to
"mapped_file", not "file_mapped".
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next prev parent reply other threads:[~2016-01-26 21:30 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-26 20:55 [PATCH] mm: memcontrol: drop superfluous entry in the per-memcg stats array Johannes Weiner
2016-01-26 21:30 ` Andrew Morton [this message]
2016-01-26 21:43 ` Johannes Weiner
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