On 10/24, Gautham R Shenoy wrote: > > On Wed, Oct 24, 2007 at 10:04:41AM -0700, Christoph Lameter wrote: > > On Wed, 24 Oct 2007, Gautham R Shenoy wrote: > > > > > This is the version 2 of the refcount based cpu-hotplug "locking" > > > implementation. > > > > Uggh. This introduces a global lock that has to be taken always when > > scanning over cpus? > > Well, no! we take the global lock only while bumping up the refcount. > We don't hold the lock while scanning over the cpus. And this is > definitely an improvement over the lock_cpu_hotplug() global mutex > we have now.
Just to be sure I didn't miss something... preempt_disable() still works, yes? Oleg. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
