On 03/31/2015 11:43 AM, Jens Axboe wrote: > That'd be easy enough to do, that's how blk-mq handles offline CPUs as > well. The attached patch is completely untested, but will handle offline > or nohz CPUs in the same fashion - they will punt to hardware queue 0, > which is mapped to CPU0 (and others, depending on the queue vs CPU ratio).
I have done some sanity testing with your patch, starting a KVM guest with vcpus and emulator threads all pinned to nohz_full cpus. The guest is still able to do disk IO, so things appear to work... Thanks for looking into this, Jens. Tested-by: Rik van Riel <r...@redhat.com> -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
