Commit 76451d79 authored Jul 18, 2017 by Christoph Hellwig Committed by Jens Axboe Jul 24, 2017

blk-mq: map queues to all present CPUs



We already do this for PCI mappings, and the higher level code now
expects that CPU on/offlining doesn't have an affect on the queue
mappings.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: Max Gurtovoy <maxg@mellanox.com>
Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

parent 765e40b6

block/blk-mq-cpumap.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -17,9 +17,9 @@
		static int cpu_to_queue_index(unsigned int nr_queues, const int cpu)
		{
		/*
		* Non online CPU will be mapped to queue index 0.
		* Non present CPU will be mapped to queue index 0.
		*/
		if (!cpu_online(cpu))
		if (!cpu_present(cpu))
		return 0;
		return cpu % nr_queues;
		}