blk-mq: Remove some unused function arguments

The struct blk_mq_hw_ctx pointer argument in blk_mq_put_tag(),
blk_mq_poll_nsecs(), and blk_mq_poll_hybrid_sleep() is unused, so remove
it.

Overall obj code size shows a minor reduction, before:
   text	   data	    bss	    dec	    hex	filename
  27306	   1312	      0	  28618	   6fca	block/blk-mq.o
   4303	    272	      0	   4575	   11df	block/blk-mq-tag.o

after:
  27282	   1312	      0	  28594	   6fb2	block/blk-mq.o
   4311	    272	      0	   4583	   11e7	block/blk-mq-tag.o

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: John Garry <john.garry@huawei.com>
--
This minor patch had been carried as part of the blk-mq shared tags RFC,
I'd rather not carry it anymore as it required rebasing, so now or never..
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/block/blk-mq-tag.c b/block/blk-mq-tag.c
index fbacde4..586c9d6 100644 (file)
--- a/block/blk-mq-tag.c
+++ b/block/blk-mq-tag.c
@@ -183,8 +183,8 @@ found_tag:
        return tag + tag_offset;
 }
 
-void blk_mq_put_tag(struct blk_mq_hw_ctx *hctx, struct blk_mq_tags *tags,
-                   struct blk_mq_ctx *ctx, unsigned int tag)
+void blk_mq_put_tag(struct blk_mq_tags *tags, struct blk_mq_ctx *ctx,
+                   unsigned int tag)
 {
        if (!blk_mq_tag_is_reserved(tags, tag)) {
                const int real_tag = tag - tags->nr_reserved_tags;

diff --git a/block/blk-mq-tag.h b/block/blk-mq-tag.h
index 15bc74a..2b8321e 100644 (file)
--- a/block/blk-mq-tag.h
+++ b/block/blk-mq-tag.h
@@ -26,8 +26,8 @@ extern struct blk_mq_tags *blk_mq_init_tags(unsigned int nr_tags, unsigned int r
 extern void blk_mq_free_tags(struct blk_mq_tags *tags);
 
 extern unsigned int blk_mq_get_tag(struct blk_mq_alloc_data *data);
-extern void blk_mq_put_tag(struct blk_mq_hw_ctx *hctx, struct blk_mq_tags *tags,
-                          struct blk_mq_ctx *ctx, unsigned int tag);
+extern void blk_mq_put_tag(struct blk_mq_tags *tags, struct blk_mq_ctx *ctx,
+                          unsigned int tag);
 extern int blk_mq_tag_update_depth(struct blk_mq_hw_ctx *hctx,
                                        struct blk_mq_tags **tags,
                                        unsigned int depth, bool can_grow);

diff --git a/block/blk-mq.c b/block/blk-mq.c
index 5e1e415..d92088d 100644 (file)
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -477,9 +477,9 @@ static void __blk_mq_free_request(struct request *rq)
        blk_pm_mark_last_busy(rq);
        rq->mq_hctx = NULL;
        if (rq->tag != -1)
-               blk_mq_put_tag(hctx, hctx->tags, ctx, rq->tag);
+               blk_mq_put_tag(hctx->tags, ctx, rq->tag);
        if (sched_tag != -1)
-               blk_mq_put_tag(hctx, hctx->sched_tags, ctx, sched_tag);
+               blk_mq_put_tag(hctx->sched_tags, ctx, sched_tag);
        blk_mq_sched_restart(hctx);
        blk_queue_exit(q);
 }
@@ -3402,7 +3402,6 @@ static void blk_mq_poll_stats_fn(struct blk_stat_callback *cb)
 }
 
 static unsigned long blk_mq_poll_nsecs(struct request_queue *q,
-                                      struct blk_mq_hw_ctx *hctx,
                                       struct request *rq)
 {
        unsigned long ret = 0;
@@ -3435,7 +3434,6 @@ static unsigned long blk_mq_poll_nsecs(struct request_queue *q,
 }
 
 static bool blk_mq_poll_hybrid_sleep(struct request_queue *q,
-                                    struct blk_mq_hw_ctx *hctx,
                                     struct request *rq)
 {
        struct hrtimer_sleeper hs;
@@ -3455,7 +3453,7 @@ static bool blk_mq_poll_hybrid_sleep(struct request_queue *q,
        if (q->poll_nsec > 0)
                nsecs = q->poll_nsec;
        else
-               nsecs = blk_mq_poll_nsecs(q, hctx, rq);
+               nsecs = blk_mq_poll_nsecs(q, rq);
 
        if (!nsecs)
                return false;
@@ -3510,7 +3508,7 @@ static bool blk_mq_poll_hybrid(struct request_queue *q,
                        return false;
        }
 
-       return blk_mq_poll_hybrid_sleep(q, hctx, rq);
+       return blk_mq_poll_hybrid_sleep(q, rq);
 }
 
 /**

diff --git a/block/blk-mq.h b/block/blk-mq.h
index c0fa343..10bfdfb 100644 (file)
--- a/block/blk-mq.h
+++ b/block/blk-mq.h
@@ -200,7 +200,7 @@ static inline bool blk_mq_get_dispatch_budget(struct blk_mq_hw_ctx *hctx)
 static inline void __blk_mq_put_driver_tag(struct blk_mq_hw_ctx *hctx,
                                           struct request *rq)
 {
-       blk_mq_put_tag(hctx, hctx->tags, rq->mq_ctx, rq->tag);
+       blk_mq_put_tag(hctx->tags, rq->mq_ctx, rq->tag);
        rq->tag = -1;
 
        if (rq->rq_flags & RQF_MQ_INFLIGHT) {