linux-kernel - Re: [PATCH] sched: CPU hotplug events must not destroy scheduler domains created by the cpusets

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Date:	Mon, 02 Jun 2008 12:01:16 -0700
From:	Max Krasnyansky <maxk@...lcomm.com>
To:	Paul Jackson <pj@....com>
CC:	mingo@...e.hu, a.p.zijlstra@...llo.nl,
	linux-kernel@...r.kernel.org, menage@...gle.com,
	rostedt@...dmis.org
Subject: Re: [PATCH] sched: CPU hotplug events must not destroy scheduler
 domains created by the cpusets

Paul Jackson wrote:

> How about:
>  1) Defining arch_init_sched_domains() for all CONFIGs, CPUSET or not
>     (see for example how free_sched_groups() is defined, NUMA or not)
>  2) Then the ifndef can be removed from here.
>  3) Then the arch_init_sched_domains() can be moved comfortably inside
>     the switch statement.

Paul, I just realized that this won't work. We actually need the default
version of arch_init_sched_domains() which builds the default domain. It's
used during bootup. It's only the hotplug event handling where we do not want
the default.
I could still redo the switch() statement as you suggested but it seems that
it's not going to improve the readability that much at this point.

Max
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