On 02/20, Christoph Lameter wrote: > > On Tue, 20 Feb 2007, Max Krasnyansky wrote: > > > > > Well seems that we have a set of unresolved issues with workqueues and > > > > cpu > > > > hotplug. > > > > How about storing 'cpu' explicitly in the work queue instead of relying on > > the > > smp_processor_id() and friends ? That way there is no ambiguity when > > threads/timers get > > moved around. > > The slab functionality is designed to work on the processor with the > queue. These tricks will only cause more trouble in the future. The > cache_reaper needs to be either disabled or run on the right processor. It > should never run on the wrong processor.
I personally agree. Besides, cache_reaper is not alone. Note the comment in debug_smp_processor_id() about cpu-bound processes. The slab does correct thing right now, stops the timer on CPU_DEAD. Other problems imho should be solved by fixing cpu-hotplug. Gautham and Srivatsa are working on that. 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/