Re: [PATCH] configure HAVE_UNSTABLE_SCHED_CLOCK for SGI_SN systems

Greg KH
2009-01-22T19:04:52Z

On Thu, Jan 15, 2009 at 11:21:05AM -0800, Luck, Tony wrote:
> > > Greg, if everyone is OK with this patch, this should also be applied
> > > to all stable trees starting with 2.6.26.
>
> > What is the status of this going into Linus's tree?
>
> I'm about to ask Linus to pull a modified version that does
> a "select HAVE_UNSTABLE_SCHED_CLOCK" for all IA64 systems ...
> SGI sched_clock() is a lot less "stable" than most, but all
> ia64 systems can hit this as the ar.itc cycle counter is only
> s/w synchronized between cpus.

Thanks, I see it now and will queue it up for the next -stable releases.

greg k-h