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Re: [PATCH] sched: Avoid sched domain rebuilding when hotplugging an isolate cpu

From Peter Zijlstra <peterz@infradead.org>
Newsgroups linux.kernel
Subject Re: [PATCH] sched: Avoid sched domain rebuilding when hotplugging an isolate cpu
Date 2015-07-30 12:40 +0200
Message-ID <pRTpM-47f-3@gated-at.bofh.it> (permalink)
References <pN8Su-82M-3@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Fri, Jul 17, 2015 at 04:03:45PM +0800, Xunlei Pang wrote:
> From: Xunlei Pang <pang.xunlei@linaro.org>
> 
> The sched domain is always rebuilt when hotplugging an isolate cpu,
> as we can see in partition_sched_domains() with the NULL doms_new,
> current sched domain is destroyed, then rebuilt. Worse still, the
> rebuilding will reset all the parameters of the sched_domain. This
> makes no sense and contradicts the isloate concept.

What parameters? isolcpus should have fairly trivial domains to begin
with.
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Re: [PATCH] sched: Avoid sched domain rebuilding when hotplugging an  isolate cpu Peter Zijlstra <peterz@infradead.org> - 2015-07-30 12:40 +0200
  Re: [PATCH] sched: Avoid sched domain rebuilding when hotplugging an  isolate cpu pang.xunlei@zte.com.cn - 2015-07-30 13:20 +0200

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