[PATCH v7 6/6] blk-mq: Enable support for runtime power management
From: Bart Van Assche <bvanassche@acm.org>
Date: 2018-09-17 20:15:25
Subsystem:
block layer, the rest · Maintainers:
Jens Axboe, Linus Torvalds
Now that the blk-mq core processes power management requests (marked with RQF_PREEMPT) in other states than RPM_ACTIVE, enable runtime power management for blk-mq. Signed-off-by: Bart Van Assche <bvanassche@acm.org> Cc: Christoph Hellwig <hch@lst.de> Cc: Ming Lei <redacted> Cc: Jianchao Wang <redacted> Cc: Hannes Reinecke <hare@suse.com> Cc: Johannes Thumshirn <redacted> Cc: Alan Stern <stern@rowland.harvard.edu> --- block/blk-mq.c | 2 ++ block/blk-pm.c | 6 ------ 2 files changed, 2 insertions(+), 6 deletions(-)
diff --git a/block/blk-mq.c b/block/blk-mq.c
index 85a1c1a59c72..20fdd78b75c7 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c@@ -33,6 +33,7 @@ #include "blk-mq.h" #include "blk-mq-debugfs.h" #include "blk-mq-tag.h" +#include "blk-pm.h" #include "blk-stat.h" #include "blk-mq-sched.h" #include "blk-rq-qos.h"
@@ -475,6 +476,7 @@ static void __blk_mq_free_request(struct request *rq) struct blk_mq_hw_ctx *hctx = blk_mq_map_queue(q, ctx->cpu); const int sched_tag = rq->internal_tag; + blk_pm_mark_last_busy(rq); if (rq->tag != -1) blk_mq_put_tag(hctx, hctx->tags, ctx, rq->tag); if (sched_tag != -1)
diff --git a/block/blk-pm.c b/block/blk-pm.c
index 5f21bedcb307..04184ff8b182 100644
--- a/block/blk-pm.c
+++ b/block/blk-pm.c@@ -30,12 +30,6 @@ */ void blk_pm_runtime_init(struct request_queue *q, struct device *dev) { - /* Don't enable runtime PM for blk-mq until it is ready */ - if (q->mq_ops) { - pm_runtime_disable(dev); - return; - } - q->dev = dev; q->rpm_status = RPM_ACTIVE; pm_runtime_set_autosuspend_delay(q->dev, -1);
--
2.18.0