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authorBart Van Assche <bvanassche@acm.org>2018-09-27 00:01:10 +0300
committerJens Axboe <axboe@kernel.dk>2018-09-27 00:11:29 +0300
commit986d413b7c156e69198dfc80fb74aa18d0ddef44 (patch)
treee0fcd51efae63e0a77af2d7213771e82ce757b4d
parent7cedffec8e759480f7f7a9be9cd0d7ebf0aafff2 (diff)
downloadlinux-986d413b7c156e69198dfc80fb74aa18d0ddef44.tar.xz
blk-mq: Enable support for runtime power management
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> Reviewed-by: Ming Lei <ming.lei@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Cc: Jianchao Wang <jianchao.w.wang@oracle.com> Cc: Hannes Reinecke <hare@suse.com> Cc: Johannes Thumshirn <jthumshirn@suse.de> Cc: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Jens Axboe <axboe@kernel.dk>
-rw-r--r--block/blk-mq.c2
-rw-r--r--block/blk-pm.c6
2 files changed, 2 insertions, 6 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c
index 96d501e8663c..d384ab700afd 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 972fbc656846..f8fdae01bea2 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);