Messages in this thread | | | Subject | Re: RFC [PATCH] SMP: Don't schedule tasks on inactive cpu(s) | From | Peter Zijlstra <> | Date | Wed, 29 Feb 2012 12:03:04 +0100 |
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On Wed, 2012-02-29 at 11:42 +0100, Jonas Aaberg wrote: > This patch removes the ability to schedule tasks on cpus that are online, > but not active. The reason for this patch is that during cpu hotplug > on ARM (atleast) there is a short window where cpuX (X > 0) is online, but > busy-waiting on cpu0 to put it active, meanwhile cpu0 can be interrupted > and try to schedule something on the cpu that is busy checking its active bit.
https://lkml.org/lkml/2011/12/15/255
that one?
I _think_ its correct, but it would be so good if someone else could verify.
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