[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH v3 1/6] xen/sched: call cpu_disable_scheduler() via cpu notifier
Hi, On 02/04/2019 06:34, Juergen Gross wrote: cpu_disable_scheduler() is being called from __cpu_disable() today. There is no need to execute it on the cpu just being disabled, so use the CPU_DEAD case of the cpu notifier chain. Moving the call out of stop_machine() context is fine, as we just need to hold the domain RCU lock and need the scheduler percpu data to be still allocated. Add another hook for CPU_DOWN_PREPARE to bail out early in case cpu_disable_scheduler() would fail. This will avoid crashes in rare cases for cpu hotplug or suspend. Signed-off-by: Juergen Gross <jgross@xxxxxxxx> Reviewed-by: Dario Faggioli <dfaggioli@xxxxxxxx> For the Arm bits: Acked-by: Julien Grall <julien.grall@xxxxxxx> Cheers, -- Julien Grall _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxxx https://lists.xenproject.org/mailman/listinfo/xen-devel
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