From 4d5bba5bee0aa002523125e51789e95d47794a06 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Thu, 13 Apr 2023 08:06:51 +0200 Subject: blk-mq: remove __blk_mq_run_hw_queue __blk_mq_run_hw_queue just contains a WARN_ON_ONCE for calls from interrupt context and a blk_mq_run_dispatch_ops-protected call to blk_mq_sched_dispatch_requests. Open code the call to blk_mq_sched_dispatch_requests in both callers, and move the WARN_ON_ONCE to blk_mq_run_hw_queue where it can be extended to all !async calls, while the other call is from workqueue context and thus obviously does not need the assert. Signed-off-by: Christoph Hellwig Reviewed-by: Damien Le Moal Link: https://lore.kernel.org/r/20230413060651.694656-6-hch@lst.de Signed-off-by: Jens Axboe --- block/blk-mq.c | 29 +++++++++-------------------- 1 file changed, 9 insertions(+), 20 deletions(-) (limited to 'block/blk-mq.c') diff --git a/block/blk-mq.c b/block/blk-mq.c index 68575c71d167..c2d297efe229 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -2138,24 +2138,6 @@ out: return true; } -/** - * __blk_mq_run_hw_queue - Run a hardware queue. - * @hctx: Pointer to the hardware queue to run. - * - * Send pending requests to the hardware. - */ -static void __blk_mq_run_hw_queue(struct blk_mq_hw_ctx *hctx) -{ - /* - * We can't run the queue inline with ints disabled. Ensure that - * we catch bad users of this early. - */ - WARN_ON_ONCE(in_interrupt()); - - blk_mq_run_dispatch_ops(hctx->queue, - blk_mq_sched_dispatch_requests(hctx)); -} - static inline int blk_mq_first_mapped_cpu(struct blk_mq_hw_ctx *hctx) { int cpu = cpumask_first_and(hctx->cpumask, cpu_online_mask); @@ -2240,6 +2222,11 @@ void blk_mq_run_hw_queue(struct blk_mq_hw_ctx *hctx, bool async) { bool need_run; + /* + * We can't run the queue inline with interrupts disabled. + */ + WARN_ON_ONCE(!async && in_interrupt()); + /* * When queue is quiesced, we may be switching io scheduler, or * updating nr_hw_queues, or other things, and we can't run queue @@ -2261,7 +2248,8 @@ void blk_mq_run_hw_queue(struct blk_mq_hw_ctx *hctx, bool async) return; } - __blk_mq_run_hw_queue(hctx); + blk_mq_run_dispatch_ops(hctx->queue, + blk_mq_sched_dispatch_requests(hctx)); } EXPORT_SYMBOL(blk_mq_run_hw_queue); @@ -2429,7 +2417,8 @@ static void blk_mq_run_work_fn(struct work_struct *work) struct blk_mq_hw_ctx *hctx = container_of(work, struct blk_mq_hw_ctx, run_work.work); - __blk_mq_run_hw_queue(hctx); + blk_mq_run_dispatch_ops(hctx->queue, + blk_mq_sched_dispatch_requests(hctx)); } /** -- cgit v1.2.3