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SubjectRe: [PATCH] x86: Don't send RESCHEDULE_VECTOR to offlined cpus
Gautham R Shenoy wrote:
> On Mon, Mar 10, 2008 at 01:24:18PM +0100, Ingo Molnar wrote:
>> * Gautham R Shenoy <> wrote:
>>> x86: Don't send RESCHEDULE_VECTOR to offlined cpus.
>>> From: Gautham R Shenoy <>
>>> In the x86 native_smp_send_reschedule_function(), don't send the IPI
>>> if the cpu has gone offline already. Warn nevertheless!!
>> have you seen this happen?
> Yup, this afternoon while running
> cpu-hotplug stress tests (
> in parallel with kern-bench, I got this on the serial console.

Note that this may be a side-effect of the bug we are chasing with the
rd->online problem.

E.g. if the rd->online issue is causing us to route tasks to dead CPUs,
this phenomenon would probably go away once rd->online is fixed (which I
believe it is with the patches that were submitted).


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