Re: [PATCH] powerpc/pseries: Fix cpu hotplug

2008-11-28 Thread Sebastien Dugue
Hi Nathan, On Thu, 27 Nov 2008 18:14:33 -0600 Nathan Lynch <[EMAIL PROTECTED]> wrote: > Hi, I have some questions about this patch. > > Sebastien Dugue wrote: > > > > Currently, pseries_cpu_die() calls msleep() while polling RTAS for > > the status of the dying cpu. > > > > However if t

Re: [PATCH] powerpc/pseries: Fix cpu hotplug

2008-11-27 Thread Nathan Lynch
Hi, I have some questions about this patch. Sebastien Dugue wrote: > > Currently, pseries_cpu_die() calls msleep() while polling RTAS for > the status of the dying cpu. > > However if the cpu that is going down also happens to be the one doing > the tick then we're hosed as the tick_do_timer

[PATCH] powerpc/pseries: Fix cpu hotplug

2008-11-27 Thread Sebastien Dugue
Currently, pseries_cpu_die() calls msleep() while polling RTAS for the status of the dying cpu. However if the cpu that is going down also happens to be the one doing the tick then we're hosed as the tick_do_timer_cpu 'baton' is only passed later on in tick_shutdown() when _cpu_down() does th