On Thu, Aug 23, 2007 at 08:55:26AM -0700, Paul E. McKenney wrote: > > Even if we use another cpumask_t, whenever a cpu goes down or comes up, > > that will be reflected in this map, no? So what's the additional > > advantage of using it? > > The additional map allows the code to use something other than the > lock_cpu_hotplug/unlock_cpu_hotplug, and also is robust against any > changes to the hotplug synchronization mechanism. Might well be > better just to use the current hotplug synchronization mechanism, > but I was feeling paranoid. ;-) If it was doing something more complicated in the critical section other than summing stuff up, I would probably recommend going for another map instead of using the current hotplug synchronization. But for this case the current hotplug synchronization would work just fine. I can very well understand your paranoia, but let me assure you, you are not the only one ;-) Regards gautham. > > Thanx, Paul -- Gautham R Shenoy Linux Technology Center IBM India. "Freedom comes with a price tag of responsibility, which is still a bargain, because Freedom is priceless!" - To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
