Merge branch 'for-4.9/block-irq' of git://git.kernel.dk/linux-block

Pull blk-mq irq/cpu mapping updates from Jens Axboe:
 "This is the block-irq topic branch for 4.9-rc. It's mostly from
  Christoph, and it allows drivers to specify their own mappings, and
  more importantly, to share the blk-mq mappings with the IRQ affinity
  mappings. It's a good step towards making this work better out of the
  box"

* 'for-4.9/block-irq' of git://git.kernel.dk/linux-block:
  blk_mq: linux/blk-mq.h does not include all the headers it depends on
  blk-mq: kill unused blk_mq_create_mq_map()
  blk-mq: get rid of the cpumask in struct blk_mq_tags
  nvme: remove the post_scan callout
  nvme: switch to use pci_alloc_irq_vectors
  blk-mq: provide a default queue mapping for PCI device
  blk-mq: allow the driver to pass in a queue mapping
  blk-mq: remove ->map_queue
  blk-mq: only allocate a single mq_map per tag_set
  blk-mq: don't redistribute hardware queues on a CPU hotplug event

1 files changed, 4 insertions, 8 deletions

diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h
index 5daa0ef756dd..ef6aebf291ed 100644
--- a/include/linux/blk-mq.h
+++ b/include/linux/blk-mq.h
@@ -62,6 +62,7 @@ struct blk_mq_hw_ctx {
 };
 
 struct blk_mq_tag_set {
+        unsigned int            *mq_map;
         struct blk_mq_ops       *ops;
         unsigned int            nr_hw_queues;
         unsigned int            queue_depth;    /* max hw supported */
@@ -85,7 +86,6 @@ struct blk_mq_queue_data {
 };
 
 typedef int (queue_rq_fn)(struct blk_mq_hw_ctx *, const struct blk_mq_queue_data *);
-typedef struct blk_mq_hw_ctx *(map_queue_fn)(struct request_queue *, const int);
 typedef enum blk_eh_timer_return (timeout_fn)(struct request *, bool);
 typedef int (init_hctx_fn)(struct blk_mq_hw_ctx *, void *, unsigned int);
 typedef void (exit_hctx_fn)(struct blk_mq_hw_ctx *, unsigned int);
@@ -99,6 +99,7 @@ typedef void (busy_iter_fn)(struct blk_mq_hw_ctx *, struct request *, void *,
                 bool);
 typedef void (busy_tag_iter_fn)(struct request *, void *, bool);
 typedef int (poll_fn)(struct blk_mq_hw_ctx *, unsigned int);
+typedef int (map_queues_fn)(struct blk_mq_tag_set *set);
 
 
 struct blk_mq_ops {
@@ -108,11 +109,6 @@ struct blk_mq_ops {
         queue_rq_fn             *queue_rq;
 
         /*
-         * Map to specific hardware queue
-         */
-        map_queue_fn            *map_queue;
-
-        /*
          * Called on request timeout
          */
         timeout_fn              *timeout;
@@ -144,6 +140,8 @@ struct blk_mq_ops {
         init_request_fn         *init_request;
         exit_request_fn         *exit_request;
         reinit_request_fn       *reinit_request;
+
+        map_queues_fn           *map_queues;
 };
 
 enum {
@@ -199,7 +197,6 @@ struct request *blk_mq_alloc_request(struct request_queue *q, int rw,
 struct request *blk_mq_alloc_request_hctx(struct request_queue *q, int op,
                 unsigned int flags, unsigned int hctx_idx);
 struct request *blk_mq_tag_to_rq(struct blk_mq_tags *tags, unsigned int tag);
-struct cpumask *blk_mq_tags_cpumask(struct blk_mq_tags *tags);
 
 enum {
         BLK_MQ_UNIQUE_TAG_BITS = 16,
@@ -218,7 +215,6 @@ static inline u16 blk_mq_unique_tag_to_tag(u32 unique_tag)
         return unique_tag & BLK_MQ_UNIQUE_TAG_MASK;
 }
 
-struct blk_mq_hw_ctx *blk_mq_map_queue(struct request_queue *, const int ctx_index);
 
 int blk_mq_request_started(struct request *rq);
 void blk_mq_start_request(struct request *rq);