Re: [PATCH 4/8] kernel/workqueue.c: unbound work queue rescuer runson first cpu in cpumask_online_cpu

[Peter Zijlstra]

On Wed, 2011-10-05 at 20:52 +0200, Thomas Gleixner wrote:
> On Wed, 5 Oct 2011, Fenghua Yu wrote:
> 
> > From: Fenghua Yu <fenghua.yu@xxxxxxxxx>
> > 
> > If work queue is unbound to a specific cpu, run rescuer on first cpu in
> > cpumask_online_cpu instead BSP which could be offlined.
> 
> This patch needs to be applied separate from that series as it fixes a
> bug which affects all architectures which can offline the boot cpu.

AFAIKT it really doesn't matter in this case, all the rescuer_thread()
needs is some bit set in that mask, since its UNBOUND it won't actually
try and migrate to any cpu and just run wherever it woke up.


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/