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From: Steven Rostedt <rostedt-nx8X9YLhiw1AfugRpC6u6w@public.gmane.org>
To: Johannes Weiner <jweiner-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Cc: Andrew Morton
	<akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>,
	KAMEZAWA Hiroyuki
	<kamezawa.hiroyu-+CUm20s59erQFUHtdCDX3A@public.gmane.org>,
	Michal Hocko <mhocko-AlSwsSmVLrQ@public.gmane.org>,
	Yong Zhang <yong.zhang0-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
	Luis Henriques <henrix-CCGZq9okbVlg9hUCZPvPmw@public.gmane.org>,
	Thomas Gleixner <tglx-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>,
	Peter Zijlstra
	<a.p.zijlstra-/NLkJaSkS4VmR6Xm/wNWPw@public.gmane.org>,
	cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org,
	linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [patch] mm: memcg: shorten preempt-disabled section around event checks
Date: Mon, 21 Nov 2011 08:46:07 -0500	[thread overview]
Message-ID: <1321883167.20742.4.camel@frodo> (raw)
In-Reply-To: <20111121110954.GE1771-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>

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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WARNING: multiple messages have this Message-ID (diff)
From: Steven Rostedt <rostedt@goodmis.org>
To: Johannes Weiner <jweiner@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
	Michal Hocko <mhocko@suse.cz>, Yong Zhang <yong.zhang0@gmail.com>,
	Luis Henriques <henrix@camandro.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	Peter Zijlstra <a.p.zijlstra@chello.nl>,
	cgroups@vger.kernel.org, linux-mm@kvack.org,
	linux-kernel@vger.kernel.org
Subject: Re: [patch] mm: memcg: shorten preempt-disabled section around event checks
Date: Mon, 21 Nov 2011 08:46:07 -0500	[thread overview]
Message-ID: <1321883167.20742.4.camel@frodo> (raw)
In-Reply-To: <20111121110954.GE1771@redhat.com>

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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WARNING: multiple messages have this Message-ID (diff)
From: Steven Rostedt <rostedt@goodmis.org>
To: Johannes Weiner <jweiner@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
	Michal Hocko <mhocko@suse.cz>, Yong Zhang <yong.zhang0@gmail.com>,
	Luis Henriques <henrix@camandro.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	Peter Zijlstra <a.p.zijlstra@chello.nl>,
	cgroups@vger.kernel.org, linux-mm@kvack.org,
	linux-kernel@vger.kernel.org
Subject: Re: [patch] mm: memcg: shorten preempt-disabled section around event checks
Date: Mon, 21 Nov 2011 08:46:07 -0500	[thread overview]
Message-ID: <1321883167.20742.4.camel@frodo> (raw)
In-Reply-To: <20111121110954.GE1771@redhat.com>

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



  parent reply	other threads:[~2011-11-21 13:46 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-11-21 11:09 [patch] mm: memcg: shorten preempt-disabled section around event checks Johannes Weiner
2011-11-21 11:09 ` Johannes Weiner
2011-11-21 13:36 ` Luis Henriques
2011-11-21 13:36   ` Luis Henriques
     [not found] ` <20111121110954.GE1771-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2011-11-21 13:46   ` Steven Rostedt [this message]
2011-11-21 13:46     ` Steven Rostedt
2011-11-21 13:46     ` Steven Rostedt
2011-11-22  0:52   ` KAMEZAWA Hiroyuki
2011-11-22  0:52     ` KAMEZAWA Hiroyuki
2011-11-22  0:52     ` KAMEZAWA Hiroyuki
2011-11-22  2:09   ` Yong Zhang
2011-11-22  2:09     ` Yong Zhang
2011-11-22  2:09     ` Yong Zhang

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