#include "blk-mq-sched.h"
#include "blk-mq-tag.h"
+/*
+ * Recalculate wakeup batch when tag is shared by hctx.
+ */
+static void blk_mq_update_wake_batch(struct blk_mq_tags *tags,
+ unsigned int users)
+{
+ if (!users)
+ return;
+
+ sbitmap_queue_recalculate_wake_batch(&tags->bitmap_tags,
+ users);
+ sbitmap_queue_recalculate_wake_batch(&tags->breserved_tags,
+ users);
+}
+
/*
* If a previously inactive queue goes active, bump the active user count.
* We need to do this before try to allocate driver tag, then even if fail
*/
bool __blk_mq_tag_busy(struct blk_mq_hw_ctx *hctx)
{
+ unsigned int users;
+
if (blk_mq_is_shared_tags(hctx->flags)) {
struct request_queue *q = hctx->queue;
- if (!test_bit(QUEUE_FLAG_HCTX_ACTIVE, &q->queue_flags) &&
- !test_and_set_bit(QUEUE_FLAG_HCTX_ACTIVE, &q->queue_flags))
- atomic_inc(&hctx->tags->active_queues);
+ if (test_bit(QUEUE_FLAG_HCTX_ACTIVE, &q->queue_flags) ||
+ test_and_set_bit(QUEUE_FLAG_HCTX_ACTIVE, &q->queue_flags)) {
+ return true;
+ }
} else {
- if (!test_bit(BLK_MQ_S_TAG_ACTIVE, &hctx->state) &&
- !test_and_set_bit(BLK_MQ_S_TAG_ACTIVE, &hctx->state))
- atomic_inc(&hctx->tags->active_queues);
+ if (test_bit(BLK_MQ_S_TAG_ACTIVE, &hctx->state) ||
+ test_and_set_bit(BLK_MQ_S_TAG_ACTIVE, &hctx->state)) {
+ return true;
+ }
}
+ users = atomic_inc_return(&hctx->tags->active_queues);
+
+ blk_mq_update_wake_batch(hctx->tags, users);
+
return true;
}
void __blk_mq_tag_idle(struct blk_mq_hw_ctx *hctx)
{
struct blk_mq_tags *tags = hctx->tags;
+ unsigned int users;
if (blk_mq_is_shared_tags(hctx->flags)) {
struct request_queue *q = hctx->queue;
return;
}
- atomic_dec(&tags->active_queues);
+ users = atomic_dec_return(&tags->active_queues);
+
+ blk_mq_update_wake_batch(tags, users);
blk_mq_tag_wakeup_all(tags, false);
}