linux-kernel - Re: [PATCH 2/2] S390 topology: don't use kthread() for arch_reinit_sched

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Message-Id: <20080630143334.66033f60.pj@sgi.com>
Date:	Mon, 30 Jun 2008 14:33:34 -0500
From:	Paul Jackson <pj@....com>
To:	Max Krasnyansky <maxk@...lcomm.com>
Cc:	heiko.carstens@...ibm.com, oleg@...sign.ru,
	akpm@...ux-foundation.org, ego@...ibm.com, menage@...gle.com,
	peterz@...radead.org, vegard.nossum@...il.com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] S390 topology: don't use kthread() for
 arch_reinit_sched_domains()

Max wrote:
> we either have to ... or change arch_init_sched_domains() to no destroy 
> current domains.

I might be misreading this, but I doubt that just not destroying
current domains is an option.  Once any CPU goes on or off line, the
only way back to the new correct sched domain configuration is via the
rebuild_sched_domains() routine in kernel/cpuset.c.

-- 
                  I won't rest till it's the best ...
                  Programmer, Linux Scalability
                  Paul Jackson <pj@....com> 1.940.382.4214
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