Messages in this thread | | | Date | Fri, 12 Apr 2013 07:37:18 +0200 | From | Ingo Molnar <> | Subject | Re: Bulk CPU Hotplug (Was Re: [PATCH] Do not force shutdown/reboot to boot cpu.) |
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* Robin Holt <holt@sgi.com> wrote:
> For the v3.9 release, can we consider my awful patch?
How about trying what I suggested, to make reboot affine to the boot CPU explicitly, not by shutting down all the other CPUs, but by set_cpus_allowed() or so?
That should solve the regression, without the ugly special-casing - while giving time to address the hot-unplug performance bottleneck.
Once that is done disable_nonboot_cpus() can be used again for reboot.
(But no strong feelings either way - both solutions are a workaround in a sense.)
Thanks,
Ingo
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