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From: Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
To: Glauber Costa <glommer-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
Cc: cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	Li Zefan <lizefan-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>,
	kamezawa.hiroyu-+CUm20s59erQFUHtdCDX3A@public.gmane.org,
	linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org,
	devel-GEFAQzZX7r8dnm+yROfE0A@public.gmane.org
Subject: Re: [PATCH v3 2/2] decrement static keys on real destroy time
Date: Thu, 26 Apr 2012 15:32:14 -0700	[thread overview]
Message-ID: <CAOS58YPKtZ-oLOtaNqgbxB4Nf0Vc=eL+FjgfMj4a9T0yjn57Sg@mail.gmail.com> (raw)
In-Reply-To: <4F99CC17.4080006-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>

On Thu, Apr 26, 2012 at 3:28 PM, Glauber Costa <glommer-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org> wrote:
> We need a broader audience for this, but if I understand the interface
> right, those functions should not be called in fast paths at all (contrary
> to the static_branch tests)
>
> The static_branch tests can be called from irq context, so we can't just get
> rid of the atomic op and use the mutex everywhere, we'd have
> to live with both.
>
> I will repost this series, with some more people in the CC list.

Great, thanks!

-- 
tejun

WARNING: multiple messages have this Message-ID (diff)
From: Tejun Heo <tj@kernel.org>
To: Glauber Costa <glommer@parallels.com>
Cc: cgroups@vger.kernel.org, netdev@vger.kernel.org,
	Li Zefan <lizefan@huawei.com>,
	kamezawa.hiroyu@jp.fujitsu.com, linux-mm@kvack.org,
	devel@openvz.org
Subject: Re: [PATCH v3 2/2] decrement static keys on real destroy time
Date: Thu, 26 Apr 2012 15:32:14 -0700	[thread overview]
Message-ID: <CAOS58YPKtZ-oLOtaNqgbxB4Nf0Vc=eL+FjgfMj4a9T0yjn57Sg@mail.gmail.com> (raw)
In-Reply-To: <4F99CC17.4080006@parallels.com>

On Thu, Apr 26, 2012 at 3:28 PM, Glauber Costa <glommer@parallels.com> wrote:
> We need a broader audience for this, but if I understand the interface
> right, those functions should not be called in fast paths at all (contrary
> to the static_branch tests)
>
> The static_branch tests can be called from irq context, so we can't just get
> rid of the atomic op and use the mutex everywhere, we'd have
> to live with both.
>
> I will repost this series, with some more people in the CC list.

Great, thanks!

-- 
tejun

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  parent reply	other threads:[~2012-04-26 22:32 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-04-26 21:24 [PATCH v3 0/2] fix problem with static_branch() for sock memcg Glauber Costa
2012-04-26 21:24 ` Glauber Costa
2012-04-26 21:24 ` [PATCH v3 1/2] Always free struct memcg through schedule_work() Glauber Costa
2012-04-26 21:24   ` Glauber Costa
2012-04-26 21:24   ` Glauber Costa
2012-04-26 21:24 ` [PATCH v3 2/2] decrement static keys on real destroy time Glauber Costa
2012-04-26 21:24   ` Glauber Costa
2012-04-26 21:24   ` Glauber Costa
     [not found]   ` <1335475463-25167-3-git-send-email-glommer-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
2012-04-26 21:39     ` Tejun Heo
2012-04-26 21:39       ` Tejun Heo
2012-04-26 21:58       ` Glauber Costa
2012-04-26 21:58         ` Glauber Costa
2012-04-26 22:13         ` Tejun Heo
2012-04-26 22:17           ` Glauber Costa
2012-04-26 22:17             ` Glauber Costa
     [not found]             ` <4F99C980.3030801-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
2012-04-26 22:22               ` Tejun Heo
2012-04-26 22:22                 ` Tejun Heo
2012-04-26 22:28                 ` Glauber Costa
2012-04-26 22:28                   ` Glauber Costa
     [not found]                   ` <4F99CC17.4080006-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
2012-04-26 22:32                     ` Tejun Heo [this message]
2012-04-26 22:32                       ` Tejun Heo

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