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From: "Siddha, Suresh B" <suresh.b.siddha@intel.com>
To: pj@sgi.com, dino@in.ibm.com, menage@google.com
Cc: Simon.Derr@bull.net, linux-kernel@vger.kernel.org,
	mbligh@google.com, rohitseth@google.com, dipankar@in.ibm.com,
	nickpiggin@yahoo.com.au
Subject: exclusive cpusets broken with cpu hotplug
Date: Tue, 17 Oct 2006 19:25:48 -0700	[thread overview]
Message-ID: <20061017192547.B19901@unix-os.sc.intel.com> (raw)

When ever a cpu hotplug happens, current kernel calls build_sched_domains()
with cpu_online_map. That will destroy all the domain partitions(done by
partition_sched_domains()) setup so far by exclusive cpusets.

And its not just cpu hotplug, this happens even if someone changes multi core
sched power savings policy.

Anyone would like to fix it up? In the presence of cpusets, we basically
need to traverse all the exclusive sets and setup the sched domains
accordingly.

If no one does :( then I will do that when I get some time...

thanks,
suresh

             reply	other threads:[~2006-10-18  2:45 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-10-18  2:25 Siddha, Suresh B [this message]
2006-10-18  7:14 ` exclusive cpusets broken with cpu hotplug Paul Jackson
2006-10-18  9:56   ` Robin Holt
2006-10-18 10:10     ` Paul Jackson
2006-10-18 10:53       ` Robin Holt
2006-10-18 21:07         ` Paul Jackson
2006-10-19  5:56           ` Paul Jackson
2006-10-18 12:16       ` Nick Piggin
2006-10-18 14:14         ` Siddha, Suresh B
2006-10-18 14:51           ` Nick Piggin
2006-10-19  6:15         ` Paul Jackson
2006-10-19  6:35           ` Nick Piggin
2006-10-19  6:57             ` Paul Jackson
2006-10-19  7:04               ` Nick Piggin
2006-10-19  7:33                 ` Paul Jackson
2006-10-19  8:16                   ` Nick Piggin
2006-10-19  8:31                     ` Paul Jackson
2006-10-19  7:34                 ` Paul Jackson
2006-10-19  8:07                   ` Nick Piggin
2006-10-19  8:11                     ` Paul Jackson
2006-10-19  8:22                       ` Nick Piggin
2006-10-19  8:42                         ` Paul Jackson
2006-10-18 17:54 ` Dinakar Guniguntala
2006-10-18 18:05   ` Paul Jackson

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