From: Shaohua Li <shaohua.li@intel.com>
To: Gilad Ben-Yossef <gilad@benyossef.com>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Frederic Weisbecker <fweisbec@gmail.com>,
Russell King <linux@arm.linux.org.uk>,
Chris Metcalf <cmetcalf@tilera.com>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
Christoph Lameter <cl@linux-foundation.org>,
Pekka Enberg <penberg@kernel.org>, Matt Mackall <mpm@selenic.com>
Subject: Re: [PATCH 4/5] mm: Only IPI CPUs to drain local pages if they exist
Date: Mon, 26 Sep 2011 09:52:04 +0800 [thread overview]
Message-ID: <1317001924.29510.160.camel@sli10-conroe> (raw)
In-Reply-To: <1316940890-24138-5-git-send-email-gilad@benyossef.com>
On Sun, 2011-09-25 at 16:54 +0800, Gilad Ben-Yossef wrote:
> Use a cpumask to track CPUs with per-cpu pages in any zone
> and only send an IPI requesting CPUs to drain these pages
> to the buddy allocator if they actually have pages.
Did you have evaluation why the fine-grained ipi is required? I suppose
every CPU has local pages here.
WARNING: multiple messages have this Message-ID (diff)
From: Shaohua Li <shaohua.li@intel.com>
To: Gilad Ben-Yossef <gilad@benyossef.com>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Frederic Weisbecker <fweisbec@gmail.com>,
Russell King <linux@arm.linux.org.uk>,
Chris Metcalf <cmetcalf@tilera.com>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
Christoph Lameter <cl@linux-foundation.org>,
Pekka Enberg <penberg@kernel.org>, Matt Mackall <mpm@selenic.com>
Subject: Re: [PATCH 4/5] mm: Only IPI CPUs to drain local pages if they exist
Date: Mon, 26 Sep 2011 09:52:04 +0800 [thread overview]
Message-ID: <1317001924.29510.160.camel@sli10-conroe> (raw)
In-Reply-To: <1316940890-24138-5-git-send-email-gilad@benyossef.com>
On Sun, 2011-09-25 at 16:54 +0800, Gilad Ben-Yossef wrote:
> Use a cpumask to track CPUs with per-cpu pages in any zone
> and only send an IPI requesting CPUs to drain these pages
> to the buddy allocator if they actually have pages.
Did you have evaluation why the fine-grained ipi is required? I suppose
every CPU has local pages here.
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next prev parent reply other threads:[~2011-09-26 1:47 UTC|newest]
Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-25 8:54 [PATCH 0/5] Reduce cross CPU IPI interference Gilad Ben-Yossef
2011-09-25 8:54 ` Gilad Ben-Yossef
2011-09-25 8:54 ` [PATCH 1/5] smp: Introduce a generic on_each_cpu_mask function Gilad Ben-Yossef
2011-09-25 8:54 ` Gilad Ben-Yossef
2011-09-25 11:37 ` Sasha Levin
2011-09-25 11:37 ` Sasha Levin
2011-09-26 8:48 ` Peter Zijlstra
2011-09-26 8:48 ` Peter Zijlstra
2011-09-25 8:54 ` [PATCH 2/5] arm: Move arm over to generic on_each_cpu_mask Gilad Ben-Yossef
2011-09-25 8:54 ` Gilad Ben-Yossef
2011-09-25 8:54 ` [PATCH 3/5] tile: Move tile to use " Gilad Ben-Yossef
2011-09-25 8:54 ` Gilad Ben-Yossef
2011-09-25 8:54 ` [PATCH 4/5] mm: Only IPI CPUs to drain local pages if they exist Gilad Ben-Yossef
2011-09-25 8:54 ` Gilad Ben-Yossef
2011-09-26 1:52 ` Shaohua Li [this message]
2011-09-26 1:52 ` Shaohua Li
2011-09-26 6:47 ` Gilad Ben-Yossef
2011-09-26 6:47 ` Gilad Ben-Yossef
2011-09-26 15:24 ` Christoph Lameter
2011-09-26 15:24 ` Christoph Lameter
2011-09-27 7:27 ` Gilad Ben-Yossef
2011-09-27 7:27 ` Gilad Ben-Yossef
2011-09-27 16:13 ` Christoph Lameter
2011-09-27 16:13 ` Christoph Lameter
2011-09-26 7:28 ` Peter Zijlstra
2011-09-26 7:28 ` Peter Zijlstra
2011-09-26 8:39 ` Gilad Ben-Yossef
2011-09-26 8:39 ` Gilad Ben-Yossef
2011-09-26 7:29 ` Peter Zijlstra
2011-09-26 7:29 ` Peter Zijlstra
2011-09-25 8:54 ` [PATCH 5/5] slub: Only IPI CPUs that have per cpu obj to flush Gilad Ben-Yossef
2011-09-25 8:54 ` Gilad Ben-Yossef
2011-09-26 6:54 ` Pekka Enberg
2011-09-26 6:54 ` Pekka Enberg
2011-09-26 7:36 ` Peter Zijlstra
2011-09-26 7:36 ` Peter Zijlstra
2011-09-26 8:07 ` Gilad Ben-Yossef
2011-09-26 8:07 ` Gilad Ben-Yossef
2011-09-26 10:03 ` Pekka Enberg
2011-09-26 10:03 ` Pekka Enberg
2011-09-26 8:10 ` Gilad Ben-Yossef
2011-09-26 8:10 ` Gilad Ben-Yossef
2011-09-26 7:33 ` Peter Zijlstra
2011-09-26 7:33 ` Peter Zijlstra
2011-09-26 8:35 ` Gilad Ben-Yossef
2011-09-26 8:35 ` Gilad Ben-Yossef
2011-09-26 9:28 ` Pekka Enberg
2011-09-26 9:28 ` Pekka Enberg
2011-09-26 9:45 ` Peter Zijlstra
2011-09-26 9:45 ` Peter Zijlstra
2011-09-26 12:05 ` Gilad Ben-Yossef
2011-09-26 12:05 ` Gilad Ben-Yossef
2011-09-26 13:49 ` Gilad Ben-Yossef
2011-09-26 13:49 ` Gilad Ben-Yossef
2011-09-26 7:20 ` [PATCH 0/5] Reduce cross CPU IPI interference Peter Zijlstra
2011-09-26 7:20 ` Peter Zijlstra
2011-09-26 8:43 ` Gilad Ben-Yossef
2011-09-26 8:43 ` Gilad Ben-Yossef
2011-09-26 8:46 ` Peter Zijlstra
2011-09-26 8:46 ` Peter Zijlstra
2011-09-28 13:00 ` Chris Metcalf
2011-09-28 13:00 ` Chris Metcalf
2011-10-02 8:44 ` Gilad Ben-Yossef
2011-10-02 8:44 ` Gilad Ben-Yossef
2011-10-02 14:58 ` Chris Metcalf
2011-10-02 14:58 ` Chris Metcalf
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