linux-kernel - Re: [patch] mm: memcg: shorten preempt-disabled section around event checks

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Message-ID: <1321883167.20742.4.camel@frodo>
Date:	Mon, 21 Nov 2011 08:46:07 -0500
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Johannes Weiner <jweiner@...hat.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Michal Hocko <mhocko@...e.cz>,
	Yong Zhang <yong.zhang0@...il.com>,
	Luis Henriques <henrix@...andro.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	cgroups@...r.kernel.org, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: [patch] mm: memcg: shorten preempt-disabled section around
 event checks

On Mon, 2011-11-21 at 12:09 +0100, Johannes Weiner wrote:
> -rt ran into a problem with the soft limit spinlock inside the
> non-preemptible section, because that is sleeping inside an atomic
> context.  But I think it makes sense for vanilla, too, to keep the
> non-preemptible section as short as possible.  Also, -3 lines.
> 

Johannes,

Thanks for this patch. It is very much appreciated by us -rt folks :)

-- Steve


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