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authorOmar Sandoval <osandov@fb.com>2018-05-09 02:08:49 -0700
committerJens Axboe <axboe@kernel.dk>2018-05-09 08:33:03 -0600
commit5238dcf4136fd7287be8e7d38752645bfa5782ec (patch)
tree9ae32c74428227bd647d35c6422246c14e228f81 /block/blk-throttle.c
parenta8a45941706bca05ef9234a17f5e4a50b9835a44 (diff)
downloadlinux-0-day-5238dcf4136fd7287be8e7d38752645bfa5782ec.tar.gz
block: replace bio->bi_issue_stat with bio-specific type
struct blk_issue_stat is going away, and bio->bi_issue_stat doesn't even use the blk-stats interface, so we can provide a separate implementation specific for bios. The helpers work the same way as the blk-stats helpers. Signed-off-by: Omar Sandoval <osandov@fb.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-throttle.c')
-rw-r--r--block/blk-throttle.c19
1 files changed, 8 insertions, 11 deletions
diff --git a/block/blk-throttle.c b/block/blk-throttle.c
index c5a1316..35f9b8f 100644
--- a/block/blk-throttle.c
+++ b/block/blk-throttle.c
@@ -36,8 +36,6 @@ static int throtl_quantum = 32;
*/
#define LATENCY_FILTERED_HD (1000L) /* 1ms */
-#define SKIP_LATENCY (((u64)1) << BLK_STAT_RES_SHIFT)
-
static struct blkcg_policy blkcg_policy_throtl;
/* A workqueue to queue throttle related work */
@@ -2139,7 +2137,7 @@ static void blk_throtl_assoc_bio(struct throtl_grp *tg, struct bio *bio)
bio->bi_cg_private = tg;
blkg_get(tg_to_blkg(tg));
}
- blk_stat_set_issue(&bio->bi_issue_stat, bio_sectors(bio));
+ bio_issue_init(&bio->bi_issue, bio_sectors(bio));
#endif
}
@@ -2251,7 +2249,7 @@ out:
#ifdef CONFIG_BLK_DEV_THROTTLING_LOW
if (throttled || !td->track_bio_latency)
- bio->bi_issue_stat.stat |= SKIP_LATENCY;
+ bio->bi_issue.value |= BIO_ISSUE_THROTL_SKIP_LATENCY;
#endif
return throttled;
}
@@ -2302,8 +2300,8 @@ void blk_throtl_bio_endio(struct bio *bio)
finish_time_ns = ktime_get_ns();
tg->last_finish_time = finish_time_ns >> 10;
- start_time = blk_stat_time(&bio->bi_issue_stat) >> 10;
- finish_time = __blk_stat_time(finish_time_ns) >> 10;
+ start_time = bio_issue_time(&bio->bi_issue) >> 10;
+ finish_time = __bio_issue_time(finish_time_ns) >> 10;
if (!start_time || finish_time <= start_time) {
blkg_put(tg_to_blkg(tg));
return;
@@ -2311,16 +2309,15 @@ void blk_throtl_bio_endio(struct bio *bio)
lat = finish_time - start_time;
/* this is only for bio based driver */
- if (!(bio->bi_issue_stat.stat & SKIP_LATENCY))
- throtl_track_latency(tg->td, blk_stat_size(&bio->bi_issue_stat),
- bio_op(bio), lat);
+ if (!(bio->bi_issue.value & BIO_ISSUE_THROTL_SKIP_LATENCY))
+ throtl_track_latency(tg->td, bio_issue_size(&bio->bi_issue),
+ bio_op(bio), lat);
if (tg->latency_target && lat >= tg->td->filtered_latency) {
int bucket;
unsigned int threshold;
- bucket = request_bucket_index(
- blk_stat_size(&bio->bi_issue_stat));
+ bucket = request_bucket_index(bio_issue_size(&bio->bi_issue));
threshold = tg->td->avg_buckets[rw][bucket].latency +
tg->latency_target;
if (lat > threshold)