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authorJosef Bacik <jbacik@fb.com>2018-07-03 18:32:35 +0300
committerJens Axboe <axboe@kernel.dk>2018-07-09 18:07:54 +0300
commita79050434b45959f397042080fd1d70ffa9bd9df (patch)
treed5689153d497925d326a8b7e9963f4c3f88685ea /block/blk-sysfs.c
parent2ecbf456352d0699f51b4c6d70ea5bf29766579c (diff)
downloadlinux-a79050434b45959f397042080fd1d70ffa9bd9df.tar.xz
blk-rq-qos: refactor out common elements of blk-wbt
blkcg-qos is going to do essentially what wbt does, only on a cgroup basis. Break out the common code that will be shared between blkcg-qos and wbt into blk-rq-qos.* so they can both utilize the same infrastructure. Signed-off-by: Josef Bacik <jbacik@fb.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-sysfs.c')
-rw-r--r--block/blk-sysfs.c22
1 files changed, 10 insertions, 12 deletions
diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c
index 94987b1f69e1..49c29a5d06bb 100644
--- a/block/blk-sysfs.c
+++ b/block/blk-sysfs.c
@@ -422,16 +422,16 @@ static ssize_t queue_poll_store(struct request_queue *q, const char *page,
static ssize_t queue_wb_lat_show(struct request_queue *q, char *page)
{
- if (!q->rq_wb)
+ if (!wbt_rq_qos(q))
return -EINVAL;
- return sprintf(page, "%llu\n", div_u64(q->rq_wb->min_lat_nsec, 1000));
+ return sprintf(page, "%llu\n", div_u64(wbt_get_min_lat(q), 1000));
}
static ssize_t queue_wb_lat_store(struct request_queue *q, const char *page,
size_t count)
{
- struct rq_wb *rwb;
+ struct rq_qos *rqos;
ssize_t ret;
s64 val;
@@ -441,23 +441,21 @@ static ssize_t queue_wb_lat_store(struct request_queue *q, const char *page,
if (val < -1)
return -EINVAL;
- rwb = q->rq_wb;
- if (!rwb) {
+ rqos = wbt_rq_qos(q);
+ if (!rqos) {
ret = wbt_init(q);
if (ret)
return ret;
}
- rwb = q->rq_wb;
if (val == -1)
- rwb->min_lat_nsec = wbt_default_latency_nsec(q);
+ val = wbt_default_latency_nsec(q);
else if (val >= 0)
- rwb->min_lat_nsec = val * 1000ULL;
+ val *= 1000ULL;
- if (rwb->enable_state == WBT_STATE_ON_DEFAULT)
- rwb->enable_state = WBT_STATE_ON_MANUAL;
+ wbt_set_min_lat(q, val);
- wbt_update_limits(rwb);
+ wbt_update_limits(q);
return count;
}
@@ -964,7 +962,7 @@ void blk_unregister_queue(struct gendisk *disk)
kobject_del(&q->kobj);
blk_trace_remove_sysfs(disk_to_dev(disk));
- wbt_exit(q);
+ rq_qos_exit(q);
mutex_lock(&q->sysfs_lock);
if (q->request_fn || (q->mq_ops && q->elevator))