linux-kernel - Re: [PATCH 1/3] cpuset: Don't pass empty cpumasks to partition_sched

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Message-ID: <6599ad830807160014t2ae6cb4dm5c273d612bf4522b@mail.gmail.com>
Date:	Wed, 16 Jul 2008 00:14:32 -0700
From:	"Paul Menage" <menage@...gle.com>
To:	"Lai Jiangshan" <laijs@...fujitsu.com>
Cc:	"Andrew Morton" <akpm@...ux-foundation.org>,
	"Paul Jackson" <pj@....com>,
	"Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/3] cpuset: Don't pass empty cpumasks to partition_sched_domains()

On Tue, Jul 15, 2008 at 8:43 PM, Lai Jiangshan <laijs@...fujitsu.com> wrote:
> i create a lots of empty cpusets(empty cpumasks) and
> turn off the "sched_load_balance" in top cpuset.
>
> And i found that all these empty cpumasks are passed to
> partition_sched_domains() in rebuild_sched_domains(),
> it's very time-consuming for partition_sched_domains()
> and it's not need.
>
> It also reduce memory consumed and some works in
> rebuild_sched_domains() too.
>
> Signed-off-by: Lai Jiangshan <laijs@...fujitsu.com>

Acked-by: Paul Menage <menage@...gle.com>

Seems reasonable, and I don't think that it clashes with the other
outstanding rebuild_sched_domains() patches.

Paul
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