Messages in this thread | | | Date | Mon, 20 Jun 2011 10:50:53 +0100 | From | Russell King - ARM Linux <> | Subject | Re: [RFC PATCH] ARM: smp: Fix the CPU hotplug race with scheduler. |
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On Mon, Jun 20, 2011 at 02:53:59PM +0530, Santosh Shilimkar wrote: > The current ARM CPU hotplug code suffers from couple of race conditions > in CPU online path with scheduler. > The ARM CPU hotplug code doesn't wait for hot-plugged CPU to be marked > active as part of cpu_notify() by the CPU which brought it up before > enabling interrupts.
Hmm, why not just move the set_cpu_online() call before notify_cpu_starting() and add the wait after the set_cpu_online() ?
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