From: Peter Zijlstra <peterz@infradead.org>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Greg Thelen <gthelen@google.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
Balbir Singh <bsingharora@gmail.com>,
Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>,
linux-arch@vger.kernel.org
Subject: Re: [PATCH] memcg: remove unneeded preempt_disable
Date: Thu, 25 Aug 2011 16:57:52 +0200 [thread overview]
Message-ID: <1314284272.27911.32.camel@twins> (raw)
In-Reply-To: <20110818144025.8e122a67.akpm@linux-foundation.org>
On Thu, 2011-08-18 at 14:40 -0700, Andrew Morton wrote:
>
> I think I'll apply it, as the call frequency is low (correct?) and the
> problem will correct itself as other architectures implement their
> atomic this_cpu_foo() operations.
Which leads me to wonder, can anything but x86 implement that this_cpu_*
muck? I doubt any of the risk chips can actually do all this.
Maybe Itanic, but then that seems to be dying fast.
WARNING: multiple messages have this Message-ID (diff)
From: Peter Zijlstra <peterz@infradead.org>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Greg Thelen <gthelen@google.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
Balbir Singh <bsingharora@gmail.com>,
Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>,
linux-arch@vger.kernel.org
Subject: Re: [PATCH] memcg: remove unneeded preempt_disable
Date: Thu, 25 Aug 2011 16:57:52 +0200 [thread overview]
Message-ID: <1314284272.27911.32.camel@twins> (raw)
In-Reply-To: <20110818144025.8e122a67.akpm@linux-foundation.org>
On Thu, 2011-08-18 at 14:40 -0700, Andrew Morton wrote:
>
> I think I'll apply it, as the call frequency is low (correct?) and the
> problem will correct itself as other architectures implement their
> atomic this_cpu_foo() operations.
Which leads me to wonder, can anything but x86 implement that this_cpu_*
muck? I doubt any of the risk chips can actually do all this.
Maybe Itanic, but then that seems to be dying fast.
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next prev parent reply other threads:[~2011-08-25 14:58 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-18 6:50 [PATCH] memcg: remove unneeded preempt_disable Greg Thelen
2011-08-18 6:50 ` Greg Thelen
2011-08-18 6:52 ` KAMEZAWA Hiroyuki
2011-08-18 6:52 ` KAMEZAWA Hiroyuki
2011-08-18 9:38 ` Johannes Weiner
2011-08-18 9:38 ` Johannes Weiner
2011-08-18 14:26 ` Valdis.Kletnieks
2011-08-18 14:41 ` Johannes Weiner
2011-08-18 14:41 ` Johannes Weiner
2011-08-18 18:27 ` Valdis.Kletnieks
2011-08-18 21:40 ` Andrew Morton
2011-08-18 21:40 ` Andrew Morton
2011-08-19 0:00 ` Greg Thelen
2011-08-19 0:00 ` Greg Thelen
2011-08-25 14:57 ` Peter Zijlstra [this message]
2011-08-25 14:57 ` Peter Zijlstra
2011-08-25 15:11 ` Christoph Lameter
2011-08-25 15:11 ` Christoph Lameter
2011-08-25 16:20 ` James Bottomley
2011-08-25 16:20 ` James Bottomley
2011-08-25 16:31 ` Christoph Lameter
2011-08-25 16:31 ` Christoph Lameter
2011-08-25 16:34 ` James Bottomley
2011-08-25 16:34 ` James Bottomley
2011-08-25 17:07 ` Christoph Lameter
2011-08-25 17:07 ` Christoph Lameter
2011-08-25 18:34 ` James Bottomley
2011-08-25 18:34 ` James Bottomley
2011-08-25 18:46 ` Christoph Lameter
2011-08-25 18:46 ` Christoph Lameter
2011-08-25 18:49 ` Peter Zijlstra
2011-08-25 18:49 ` Peter Zijlstra
2011-08-25 18:53 ` Peter Zijlstra
2011-08-25 18:53 ` Peter Zijlstra
2011-08-25 19:05 ` Peter Zijlstra
2011-08-25 19:05 ` Peter Zijlstra
2011-08-25 19:19 ` Christoph Lameter
2011-08-25 19:19 ` Christoph Lameter
2011-08-25 22:56 ` Peter Zijlstra
2011-08-25 22:56 ` Peter Zijlstra
2011-08-25 19:29 ` James Bottomley
2011-08-25 19:29 ` James Bottomley
2011-08-25 23:01 ` Peter Zijlstra
2011-08-25 23:01 ` Peter Zijlstra
2011-08-25 18:40 ` Peter Zijlstra
2011-08-25 18:40 ` Peter Zijlstra
2011-09-06 9:58 ` Johannes Weiner
2011-09-06 9:58 ` Johannes Weiner
2011-09-06 10:04 ` KAMEZAWA Hiroyuki
2011-09-06 10:04 ` KAMEZAWA Hiroyuki
2011-09-06 10:49 ` Johannes Weiner
2011-09-06 10:49 ` Johannes Weiner
2011-09-06 10:45 ` KAMEZAWA Hiroyuki
2011-09-06 10:45 ` KAMEZAWA Hiroyuki
2011-09-06 18:04 ` Greg Thelen
2011-09-06 18:04 ` Greg Thelen
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