lkml.org 
[lkml]   [2008]   [Mar]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
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 <ego@in.ibm.com> wrote:
>>
>>> x86: Don't send RESCHEDULE_VECTOR to offlined cpus.
>>> From: Gautham R Shenoy <ego@in.ibm.com>
>>>
>>> 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 (http://lkml.org/lkml/2008/3/3/11)
> 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).

Regards,
-Greg


\
 
 \ /
  Last update: 2008-03-10 17:41    [W:0.042 / U:5.164 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site