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| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2008-06-05 14:49:58 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-06-10 12:17:28 +0200 |
| commit | 7def2be1dc679984f4c4fb3ef19a8a081b2454ec (patch) | |
| tree | 5be15957919d095cdbbc9ed3217d9dec939b234b /kernel/kthread.c | |
| parent | e958b3600484533ff801920290468adc8135f89d (diff) | |
sched: fix hotplug cpus on ia64
Cliff Wickman wrote:
> I built an ia64 kernel from Andrew's tree (2.6.26-rc2-mm1)
> and get a very predictable hotplug cpu problem.
> billberry1:/tmp/cpw # ./dis
> disabled cpu 17
> enabled cpu 17
> billberry1:/tmp/cpw # ./dis
> disabled cpu 17
> enabled cpu 17
> billberry1:/tmp/cpw # ./dis
>
> The script that disables the cpu always hangs (unkillable)
> on the 3rd attempt.
>
> And a bit further:
> The kstopmachine thread always sits on the run queue (real time) for about
> 30 minutes before running.
this fix solves some (but not all) issues between CPU hotplug and
RT bandwidth throttling.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/kthread.c')
0 files changed, 0 insertions, 0 deletions