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block, bfq: only do counting of pending-request for BFQ_GROUP_IOSCHED

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The 'bfqd->num_groups_with_pending_reqs' is used when
CONFIG_BFQ_GROUP_IOSCHED is enabled, so let the variables and processes
take effect when CONFIG_BFQ_GROUP_IOSCHED is enabled.

Cc: Yu Kuai <yukuai3@huawei.com>
Signed-off-by: Yuwei Guan <Yuwei.Guan@zeekrlife.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Yu Kuai <yukuai3@huawei.com>
Link: https://lore.kernel.org/r/20221110112622.389332-1-Yuwei.Guan@zeekrlife.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Yuwei Guan 2022-11-10 19:26:22 +08:00 committed by Jens Axboe
parent 813e693023
commit 1eb206208b
3 changed files with 10 additions and 4 deletions
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2
block/bfq-iosched.c
View File

@ -7063,7 +7063,9 @@ static int bfq_init_queue(struct request_queue *q, struct elevator_type *e)
bfqd->idle_slice_timer.function = bfq_idle_slice_timer;
bfqd->queue_weights_tree = RB_ROOT_CACHED;
#ifdef CONFIG_BFQ_GROUP_IOSCHED
bfqd->num_groups_with_pending_reqs = 0;
#endif
INIT_LIST_HEAD(&bfqd->active_list);
INIT_LIST_HEAD(&bfqd->idle_list);

4
block/bfq-iosched.h
View File

@ -197,8 +197,10 @@ struct bfq_entity {
/* flag, set to request a weight, ioprio or ioprio_class change */
int prio_changed;
#ifdef CONFIG_BFQ_GROUP_IOSCHED
/* flag, set if the entity is counted in groups_with_pending_reqs */
bool in_groups_with_pending_reqs;
#endif
/* last child queue of entity created (for non-leaf entities) */
struct bfq_queue *last_bfqq_created;
@ -491,6 +493,7 @@ struct bfq_data {
*/
struct rb_root_cached queue_weights_tree;
#ifdef CONFIG_BFQ_GROUP_IOSCHED
/*
* Number of groups with at least one process that
* has at least one request waiting for completion. Note that
@ -538,6 +541,7 @@ struct bfq_data {
* with no request waiting for completion.
*/
unsigned int num_groups_with_pending_reqs;
#endif
/*
* Per-class (RT, BE, IDLE) number of bfq_queues containing

8
block/bfq-wf2q.c
View File

@ -1612,28 +1612,28 @@ void bfq_requeue_bfqq(struct bfq_data *bfqd, struct bfq_queue *bfqq,
void bfq_add_bfqq_in_groups_with_pending_reqs(struct bfq_queue *bfqq)
{
#ifdef CONFIG_BFQ_GROUP_IOSCHED
struct bfq_entity *entity = &bfqq->entity;
if (!entity->in_groups_with_pending_reqs) {
entity->in_groups_with_pending_reqs = true;
#ifdef CONFIG_BFQ_GROUP_IOSCHED
if (!(bfqq_group(bfqq)->num_queues_with_pending_reqs++))
bfqq->bfqd->num_groups_with_pending_reqs++;
#endif
}
#endif
}
void bfq_del_bfqq_in_groups_with_pending_reqs(struct bfq_queue *bfqq)
{
#ifdef CONFIG_BFQ_GROUP_IOSCHED
struct bfq_entity *entity = &bfqq->entity;
if (entity->in_groups_with_pending_reqs) {
entity->in_groups_with_pending_reqs = false;
#ifdef CONFIG_BFQ_GROUP_IOSCHED
if (!(--bfqq_group(bfqq)->num_queues_with_pending_reqs))
bfqq->bfqd->num_groups_with_pending_reqs--;
#endif
}
#endif
}
/*