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| author | Jens Axboe <axboe@fb.com> | 2017-01-17 14:03:22 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2017-01-17 18:04:20 +0100 |
| commit | bd166ef183c263c5ced656d49ef19c7da4adc774 (patch) | |
| tree | 449bbd3b4e671b370b96e3846b2281116e7089e9 /block/blk-exec.c | |
| parent | blk-mq: split tag ->rqs[] into two (diff) | |
| download | linux-bd166ef183c263c5ced656d49ef19c7da4adc774.tar.xz linux-bd166ef183c263c5ced656d49ef19c7da4adc774.zip | |
blk-mq-sched: add framework for MQ capable IO schedulers
This adds a set of hooks that intercepts the blk-mq path of
allocating/inserting/issuing/completing requests, allowing
us to develop a scheduler within that framework.
We reuse the existing elevator scheduler API on the registration
side, but augment that with the scheduler flagging support for
the blk-mq interfce, and with a separate set of ops hooks for MQ
devices.
We split driver and scheduler tags, so we can run the scheduling
independently of device queue depth.
Signed-off-by: Jens Axboe <axboe@fb.com>
Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>
Diffstat (limited to 'block/blk-exec.c')
| -rw-r--r-- | block/blk-exec.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/block/blk-exec.c b/block/blk-exec.c index 3ecb00a6cf45..86656fdfa637 100644 --- a/block/blk-exec.c +++ b/block/blk-exec.c @@ -9,6 +9,7 @@ #include <linux/sched/sysctl.h> #include "blk.h" +#include "blk-mq-sched.h" /* * for max sense size @@ -65,7 +66,7 @@ void blk_execute_rq_nowait(struct request_queue *q, struct gendisk *bd_disk, * be reused after dying flag is set */ if (q->mq_ops) { - blk_mq_insert_request(rq, at_head, true, false); + blk_mq_sched_insert_request(rq, at_head, true, false); return; } |