Hello, Tang. On Thu, Jul 23, 2015 at 12:44:53PM +0800, Tang Chen wrote: > Allocating cpuid when a new cpu comes up and reusing the cpuid when it > comes up again is possible. But I'm not quite sure if it will be less > modification > because we still need an array or bit map or something to keep the mapping, > and select backup nodes for cpus on memory-less nodes when allocating > memory. > > I can post a set of patches for this idea. And then we can see which one is > better.
I suspect the difference could be that in the current code the users (workqueue) can remain the same while if we do it lazily there probably needs to be a way to poke it. As long as the IDs are allocated to the online CPUs first, I think pre-allocating everything should be fine too. Thanks. -- tejun -- 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/
