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blk-mq: short cut the IPI path in blk_mq_force_complete_rq for !SMP 

Let the compile optimize out the entire IPI path, given that we are
obviously not going to use it.

Reviewed-by: Daniel Wagner <dwagner@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2020-06-11 08:44:45 +02:00 committed by Jens Axboe
parent 6aab1da603
commit d6cc464cc5
1 changed files with 2 additions and 1 deletions
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3
block/blk-mq.c
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@ -727,7 +727,8 @@ void blk_mq_force_complete_rq(struct request *rq)
return;
}
if (!test_bit(QUEUE_FLAG_SAME_COMP, &q->queue_flags)) {
if (!IS_ENABLED(CONFIG_SMP) ||
!test_bit(QUEUE_FLAG_SAME_COMP, &q->queue_flags)) {
q->mq_ops->complete(rq);
return;
}