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authorJens Axboe <axboe@fb.com>2016-12-14 14:34:47 -0700
committerJens Axboe <axboe@fb.com>2017-01-17 10:03:53 -0700
commit2c3ad667902ef6f4b60ef0a3c6f7d8c2b007769a (patch)
tree64efd11a702db36d78b3c2067ac9c36110987ad7 /block/blk-mq.h
parent16a3c2a70cad5ccdc2dc0a4544bff82554807493 (diff)
downloadlinux-2c3ad667902ef6f4b60ef0a3c6f7d8c2b007769a.tar.bz2
blk-mq: export some helpers we need to the scheduling framework
Signed-off-by: Jens Axboe <axboe@fb.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Omar Sandoval <osandov@fb.com>
Diffstat (limited to 'block/blk-mq.h')
-rw-r--r--block/blk-mq.h25
1 files changed, 25 insertions, 0 deletions
diff --git a/block/blk-mq.h b/block/blk-mq.h
index 63e9116cddbd..e59f5ca520a2 100644
--- a/block/blk-mq.h
+++ b/block/blk-mq.h
@@ -32,6 +32,21 @@ void blk_mq_free_queue(struct request_queue *q);
int blk_mq_update_nr_requests(struct request_queue *q, unsigned int nr);
void blk_mq_wake_waiters(struct request_queue *q);
bool blk_mq_dispatch_rq_list(struct blk_mq_hw_ctx *, struct list_head *);
+void blk_mq_flush_busy_ctxs(struct blk_mq_hw_ctx *hctx, struct list_head *list);
+
+/*
+ * Internal helpers for allocating/freeing the request map
+ */
+void blk_mq_free_rq_map(struct blk_mq_tag_set *set, struct blk_mq_tags *tags,
+ unsigned int hctx_idx);
+struct blk_mq_tags *blk_mq_init_rq_map(struct blk_mq_tag_set *set,
+ unsigned int hctx_idx);
+
+/*
+ * Internal helpers for request insertion into sw queues
+ */
+void __blk_mq_insert_request(struct blk_mq_hw_ctx *hctx, struct request *rq,
+ bool at_head);
/*
* CPU hotplug helpers
@@ -103,6 +118,16 @@ static inline void blk_mq_set_alloc_data(struct blk_mq_alloc_data *data,
data->hctx = hctx;
}
+/*
+ * Internal helpers for request allocation/init/free
+ */
+void blk_mq_rq_ctx_init(struct request_queue *q, struct blk_mq_ctx *ctx,
+ struct request *rq, unsigned int op);
+void __blk_mq_free_request(struct blk_mq_hw_ctx *hctx, struct blk_mq_ctx *ctx,
+ struct request *rq);
+struct request *__blk_mq_alloc_request(struct blk_mq_alloc_data *data,
+ unsigned int op);
+
static inline bool blk_mq_hctx_stopped(struct blk_mq_hw_ctx *hctx)
{
return test_bit(BLK_MQ_S_STOPPED, &hctx->state);