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kyber: covert to use request_queue->async_depth

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Instead of the internal async_depth, remove kqd->async_depth and related
helpers.

Noted elevator attribute async_depth is now removed, queue attribute
with the same name is used instead.

Signed-off-by: Yu Kuai <yukuai@fnnas.com>
Reviewed-by: Nilay Shroff <nilay@linux.ibm.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Yu Kuai 2026-02-03 16:19:46 +08:00 • committed by Jens Axboe
parent f98afe4f31
commit 8cbe62f4d8
1 changed files with 5 additions and 28 deletions
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33
block/kyber-iosched.c
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@ -47,9 +47,8 @@ enum {
* asynchronous requests, we reserve 25% of requests for synchronous
* operations.
*/
KYBER_ASYNC_PERCENT = 75,
KYBER_DEFAULT_ASYNC_PERCENT = 75,
};
/*
* Maximum device-wide depth for each scheduling domain.
*
@ -157,9 +156,6 @@ struct kyber_queue_data {
*/
struct sbitmap_queue domain_tokens[KYBER_NUM_DOMAINS];
/* Number of allowed async requests. */
unsigned int async_depth;
struct kyber_cpu_latency __percpu *cpu_latency;
/* Timer for stats aggregation and adjusting domain tokens. */
@ -401,10 +397,7 @@ err:
static void kyber_depth_updated(struct request_queue *q)
{
struct kyber_queue_data *kqd = q->elevator->elevator_data;
kqd->async_depth = q->nr_requests * KYBER_ASYNC_PERCENT / 100U;
blk_mq_set_min_shallow_depth(q, kqd->async_depth);
blk_mq_set_min_shallow_depth(q, q->async_depth);
}
static int kyber_init_sched(struct request_queue *q, struct elevator_queue *eq)
@ -414,6 +407,7 @@ static int kyber_init_sched(struct request_queue *q, struct elevator_queue *eq)
blk_queue_flag_clear(QUEUE_FLAG_SQ_SCHED, q);
q->elevator = eq;
q->async_depth = q->nr_requests * KYBER_DEFAULT_ASYNC_PERCENT / 100;
kyber_depth_updated(q);
return 0;
@ -552,15 +546,8 @@ static void rq_clear_domain_token(struct kyber_queue_data *kqd,
static void kyber_limit_depth(blk_opf_t opf, struct blk_mq_alloc_data *data)
{
/*
* We use the scheduler tags as per-hardware queue queueing tokens.
* Async requests can be limited at this stage.
*/
if (!blk_mq_is_sync_read(opf)) {
struct kyber_queue_data *kqd = data->q->elevator->elevator_data;
data->shallow_depth = kqd->async_depth;
}
if (!blk_mq_is_sync_read(opf))
data->shallow_depth = data->q->async_depth;
}
static bool kyber_bio_merge(struct request_queue *q, struct bio *bio,
@ -956,15 +943,6 @@ KYBER_DEBUGFS_DOMAIN_ATTRS(KYBER_DISCARD, discard)
KYBER_DEBUGFS_DOMAIN_ATTRS(KYBER_OTHER, other)
#undef KYBER_DEBUGFS_DOMAIN_ATTRS
static int kyber_async_depth_show(void *data, struct seq_file *m)
{
struct request_queue *q = data;
struct kyber_queue_data *kqd = q->elevator->elevator_data;
seq_printf(m, "%u\n", kqd->async_depth);
return 0;
}
static int kyber_cur_domain_show(void *data, struct seq_file *m)
{
struct blk_mq_hw_ctx *hctx = data;
@ -990,7 +968,6 @@ static const struct blk_mq_debugfs_attr kyber_queue_debugfs_attrs[] = {
KYBER_QUEUE_DOMAIN_ATTRS(write),
KYBER_QUEUE_DOMAIN_ATTRS(discard),
KYBER_QUEUE_DOMAIN_ATTRS(other),
{"async_depth", 0400, kyber_async_depth_show},
{},
};
#undef KYBER_QUEUE_DOMAIN_ATTRS