linux-kernel - Re: [RFC PATCH] memcg: export knobs for the defaul cgroup hierarchy

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Message-ID: <20140721132213.GE8393@dhcp22.suse.cz>
Date:	Mon, 21 Jul 2014 15:22:13 +0200
From:	Michal Hocko <mhocko@...e.cz>
To:	Johannes Weiner <hannes@...xchg.org>
Cc:	linux-mm@...ck.org, LKML <linux-kernel@...r.kernel.org>,
	Tejun Heo <tj@...nel.org>, Hugh Dickins <hughd@...gle.com>,
	Greg Thelen <gthelen@...gle.com>,
	Vladimir Davydov <vdavydov@...allels.com>,
	Glauber Costa <glommer@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
Subject: Re: [RFC PATCH] memcg: export knobs for the defaul cgroup hierarchy

On Wed 16-07-14 11:58:14, Johannes Weiner wrote:
> On Wed, Jul 16, 2014 at 04:39:38PM +0200, Michal Hocko wrote:
[...]
> > +#ifdef CONFIG_MEMCG_KMEM
> > +	{
> > +		.name = "kmem.limit_in_bytes",
> > +		.private = MEMFILE_PRIVATE(_KMEM, RES_LIMIT),
> > +		.write = mem_cgroup_write,
> > +		.read_u64 = mem_cgroup_read_u64,
> > +	},
> 
> Does it really make sense to have a separate limit for kmem only?

It seems that needs furhter discussion so I will drop it in next version
of the patch and we can enable it or move to a single knob for U+K
later.
-- 
Michal Hocko
SUSE Labs
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