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authorOmar Sandoval <osandov@fb.com>2018-05-09 02:08:51 -0700
committerJens Axboe <axboe@kernel.dk>2018-05-09 08:33:06 -0600
commit84c7afcebed913c93d50f116b046b7f0d8ec0cdc (patch)
tree0c4b9bc41c6ef64b53ee51251ee3b957b2533d05 /block/bfq-iosched.h
parent544ccc8dc904db55d4576c27a1eb66a888ffacea (diff)
downloadlinux-84c7afcebed913c93d50f116b046b7f0d8ec0cdc.tar.bz2
block: use ktime_get_ns() instead of sched_clock() for cfq and bfq
cfq and bfq have some internal fields that use sched_clock() which can trivially use ktime_get_ns() instead. Their timestamp fields in struct request can also use ktime_get_ns(), which resolves the 8 year old comment added by commit 28f4197e5d47 ("block: disable preemption before using sched_clock()"). Signed-off-by: Omar Sandoval <osandov@fb.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/bfq-iosched.h')
-rw-r--r--block/bfq-iosched.h10
1 files changed, 5 insertions, 5 deletions
diff --git a/block/bfq-iosched.h b/block/bfq-iosched.h
index ae2f3dadec44..8ec7ff92cd6f 100644
--- a/block/bfq-iosched.h
+++ b/block/bfq-iosched.h
@@ -732,9 +732,9 @@ struct bfqg_stats {
/* total time with empty current active q with other requests queued */
struct blkg_stat empty_time;
/* fields after this shouldn't be cleared on stat reset */
- uint64_t start_group_wait_time;
- uint64_t start_idle_time;
- uint64_t start_empty_time;
+ u64 start_group_wait_time;
+ u64 start_idle_time;
+ u64 start_empty_time;
uint16_t flags;
#endif /* CONFIG_BFQ_GROUP_IOSCHED && CONFIG_DEBUG_BLK_CGROUP */
};
@@ -856,8 +856,8 @@ void bfqg_stats_update_io_add(struct bfq_group *bfqg, struct bfq_queue *bfqq,
unsigned int op);
void bfqg_stats_update_io_remove(struct bfq_group *bfqg, unsigned int op);
void bfqg_stats_update_io_merged(struct bfq_group *bfqg, unsigned int op);
-void bfqg_stats_update_completion(struct bfq_group *bfqg, uint64_t start_time,
- uint64_t io_start_time, unsigned int op);
+void bfqg_stats_update_completion(struct bfq_group *bfqg, u64 start_time_ns,
+ u64 io_start_time_ns, unsigned int op);
void bfqg_stats_update_dequeue(struct bfq_group *bfqg);
void bfqg_stats_set_start_empty_time(struct bfq_group *bfqg);
void bfqg_stats_update_idle_time(struct bfq_group *bfqg);