blk-mq: allow the driver to pass in a queue mapping

[cascardo/linux.git] / block / blk-mq.h

diff --git a/block/blk-mq.h b/block/blk-mq.h
index 9087b11..c92bb7d 100644 (file)
--- a/block/blk-mq.h
+++ b/block/blk-mq.h
@@ -47,11 +47,15 @@ void blk_mq_disable_hotplug(void);
 /*
  * CPU -> queue mappings
  */
-extern unsigned int *blk_mq_make_queue_map(struct blk_mq_tag_set *set);
-extern int blk_mq_update_queue_map(unsigned int *map, unsigned int nr_queues,
-                                  const struct cpumask *online_mask);
+int blk_mq_map_queues(struct blk_mq_tag_set *set);
 extern int blk_mq_hw_queue_to_node(unsigned int *map, unsigned int);
 
+static inline struct blk_mq_hw_ctx *blk_mq_map_queue(struct request_queue *q,
+               int cpu)
+{
+       return q->queue_hw_ctx[q->mq_map[cpu]];
+}
+
 /*
  * sysfs helpers
  */