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authorJens Axboe <axboe@fb.com>2016-11-10 21:50:51 -0700
committerJens Axboe <axboe@fb.com>2016-11-11 16:18:24 -0700
commit8054b89f8fca75d514965ee627a15b47020d2053 (patch)
treeeb5848111e22d9cd2cb81aacb3cc3a3fa7489cee /block/blk-wbt.c
parentd8a0cbfd73cb7281120d1b49f90afeef26ad48a2 (diff)
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blk-wbt: remove stat ops
Again a leftover from when the throttling code was generic. Now that we just have the block user, get rid of the stat ops and indirections. Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'block/blk-wbt.c')
-rw-r--r--block/blk-wbt.c15
1 files changed, 5 insertions, 10 deletions
diff --git a/block/blk-wbt.c b/block/blk-wbt.c
index 4ab9cebc8003..f6ec7e587fa6 100644
--- a/block/blk-wbt.c
+++ b/block/blk-wbt.c
@@ -308,7 +308,7 @@ static int __latency_exceeded(struct rq_wb *rwb, struct blk_rq_stat *stat)
* waited or still has writes in flights, consider us doing
* just writes as well.
*/
- if ((stat[1].nr_samples && rwb->stat_ops->is_current(stat)) ||
+ if ((stat[1].nr_samples && blk_stat_is_current(stat)) ||
wb_recent_wait(rwb) || wbt_inflight(rwb))
return LAT_UNKNOWN_WRITES;
return LAT_UNKNOWN;
@@ -333,7 +333,7 @@ static int latency_exceeded(struct rq_wb *rwb)
{
struct blk_rq_stat stat[2];
- rwb->stat_ops->get(rwb->ops_data, stat);
+ blk_queue_stat_get(rwb->queue, stat);
return __latency_exceeded(rwb, stat);
}
@@ -355,7 +355,7 @@ static void scale_up(struct rq_wb *rwb)
rwb->scale_step--;
rwb->unknown_cnt = 0;
- rwb->stat_ops->clear(rwb->ops_data);
+ blk_stat_clear(rwb->queue);
rwb->scaled_max = calc_wb_limits(rwb);
@@ -385,7 +385,7 @@ static void scale_down(struct rq_wb *rwb, bool hard_throttle)
rwb->scaled_max = false;
rwb->unknown_cnt = 0;
- rwb->stat_ops->clear(rwb->ops_data);
+ blk_stat_clear(rwb->queue);
calc_wb_limits(rwb);
rwb_trace_step(rwb, "step down");
}
@@ -675,7 +675,7 @@ void wbt_disable(struct rq_wb *rwb)
}
EXPORT_SYMBOL_GPL(wbt_disable);
-int wbt_init(struct request_queue *q, struct wb_stat_ops *ops)
+int wbt_init(struct request_queue *q)
{
struct rq_wb *rwb;
int i;
@@ -688,9 +688,6 @@ int wbt_init(struct request_queue *q, struct wb_stat_ops *ops)
BUILD_BUG_ON(RWB_WINDOW_NSEC > BLK_STAT_NSEC);
BUILD_BUG_ON(WBT_NR_BITS > BLK_STAT_RES_BITS);
- if (!ops->get || !ops->is_current || !ops->clear)
- return -EINVAL;
-
rwb = kzalloc(sizeof(*rwb), GFP_KERNEL);
if (!rwb)
return -ENOMEM;
@@ -706,8 +703,6 @@ int wbt_init(struct request_queue *q, struct wb_stat_ops *ops)
rwb->last_comp = rwb->last_issue = jiffies;
rwb->queue = q;
rwb->win_nsec = RWB_WINDOW_NSEC;
- rwb->stat_ops = ops;
- rwb->ops_data = q;
wbt_update_limits(rwb);
/*