diff options
| author | Kemeng Shi <shikemeng@huawei.com> | 2022-10-18 14:19:31 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2022-12-01 15:44:12 +0100 |
| commit | 6c31be320c52bad07e0317d2565ae8a4e5dab03b (patch) | |
| tree | 8d37db5629bd53d74eaa4f96615adaaa1ba8baab /block/blk-iocost.c | |
| parent | blk-iocost: Trace vtime_base_rate instead of vtime_rate (diff) | |
| download | linux-6c31be320c52bad07e0317d2565ae8a4e5dab03b.tar.xz linux-6c31be320c52bad07e0317d2565ae8a4e5dab03b.zip | |
blk-iocost: Remove vrate member in struct ioc_now
If we trace vtime_base_rate instead of vtime_rate, there is nowhere
which accesses now->vrate except function ioc_now using now->vrate locally.
Just remove it.
Signed-off-by: Kemeng Shi <shikemeng@huawei.com>
Acked-by: Tejun Heo <tj@kernel.org>
Link: https://lore.kernel.org/r/20221018121932.10792-5-shikemeng@huawei.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-iocost.c')
| -rw-r--r-- | block/blk-iocost.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/block/blk-iocost.c b/block/blk-iocost.c index f57a84ff0244..1b1a2d0f5564 100644 --- a/block/blk-iocost.c +++ b/block/blk-iocost.c @@ -556,7 +556,6 @@ struct ioc_now { u64 now_ns; u64 now; u64 vnow; - u64 vrate; }; struct iocg_wait { @@ -1020,10 +1019,11 @@ static void ioc_adjust_base_vrate(struct ioc *ioc, u32 rq_wait_pct, static void ioc_now(struct ioc *ioc, struct ioc_now *now) { unsigned seq; + u64 vrate; now->now_ns = ktime_get(); now->now = ktime_to_us(now->now_ns); - now->vrate = atomic64_read(&ioc->vtime_rate); + vrate = atomic64_read(&ioc->vtime_rate); /* * The current vtime is @@ -1036,7 +1036,7 @@ static void ioc_now(struct ioc *ioc, struct ioc_now *now) do { seq = read_seqcount_begin(&ioc->period_seqcount); now->vnow = ioc->period_at_vtime + - (now->now - ioc->period_at) * now->vrate; + (now->now - ioc->period_at) * vrate; } while (read_seqcount_retry(&ioc->period_seqcount, seq)); } |