On Fri, Dec 02, 2016 at 08:15:16PM -0700, Jens Axboe wrote: > For MQ devices, we have to use other functions to run the queue. > No functional changes in this patch, just a prep patch for > support legacy schedulers on blk-mq. > > Signed-off-by: Jens Axboe <axboe@xxxxxx> > --- > block/cfq-iosched.c | 22 +++++++++++++++++++--- > 1 file changed, 19 insertions(+), 3 deletions(-) > > diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c > index c73a6fcaeb9d..d6d454a72bd4 100644 > --- a/block/cfq-iosched.c > +++ b/block/cfq-iosched.c > @@ -919,8 +919,14 @@ static inline struct cfq_data *cic_to_cfqd(struct cfq_io_cq *cic) > static inline void cfq_schedule_dispatch(struct cfq_data *cfqd) > { > if (cfqd->busy_queues) { > + struct request_queue *q = cfqd->queue; > + > cfq_log(cfqd, "schedule dispatch"); > - kblockd_schedule_work(&cfqd->unplug_work); > + > + if (q->mq_ops) You've introduced blk_use_mq_path() in patch 1, so why don't you use it here as well? > + blk_mq_run_hw_queues(q, true); > + else > + kblockd_schedule_work(&cfqd->unplug_work); > } > } > > @@ -4086,6 +4092,16 @@ static void cfq_preempt_queue(struct cfq_data *cfqd, struct cfq_queue *cfqq) > cfq_mark_cfqq_slice_new(cfqq); > } > > +static void cfq_run_queue(struct cfq_data *cfqd) > +{ > + struct request_queue *q = cfqd->queue; > + > + if (q->mq_ops) Ditto. > + blk_mq_run_hw_queues(q, true); > + else > + __blk_run_queue(q); > +} > + > /* > * Called when a new fs request (rq) is added (to cfqq). Check if there's > * something we should do about it > @@ -4122,7 +4138,7 @@ cfq_rq_enqueued(struct cfq_data *cfqd, struct cfq_queue *cfqq, > cfqd->busy_queues > 1) { > cfq_del_timer(cfqd, cfqq); > cfq_clear_cfqq_wait_request(cfqq); > - __blk_run_queue(cfqd->queue); > + cfq_run_queue(cfqd); > } else { > cfqg_stats_update_idle_time(cfqq->cfqg); > cfq_mark_cfqq_must_dispatch(cfqq); > @@ -4136,7 +4152,7 @@ cfq_rq_enqueued(struct cfq_data *cfqd, struct cfq_queue *cfqq, > * this new queue is RT and the current one is BE > */ > cfq_preempt_queue(cfqd, cfqq); > - __blk_run_queue(cfqd->queue); > + cfq_run_queue(cfqd); > } > } > > -- > 2.7.4 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-block" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- Johannes Thumshirn Storage jthumshirn@xxxxxxx +49 911 74053 689 SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg GF: Felix Imendörffer, Jane Smithard, Graham Norton HRB 21284 (AG Nürnberg) Key fingerprint = EC38 9CAB C2C4 F25D 8600 D0D0 0393 969D 2D76 0850 -- To unsubscribe from this list: send the line "unsubscribe linux-block" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html