From: Jens Axboe <axboe@kernel.dk>
To: linux-block@vger.kernel.org
Cc: osandov@fb.com, efault@gmx.de, paolo.valente@linaro.org,
Jens Axboe <axboe@kernel.dk>
Subject: [PATCH 7/7] kyber-iosched: update shallow depth when setting up hardware queue
Date: Wed, 9 May 2018 14:49:27 -0600 [thread overview]
Message-ID: <1525898967-13425-8-git-send-email-axboe@kernel.dk> (raw)
In-Reply-To: <1525898967-13425-1-git-send-email-axboe@kernel.dk>
We don't expect the async depth to be smaller than the wake batch
count for sbitmap, but just in case, inform sbitmap of what shallow
depth kyber may use.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---
block/kyber-iosched.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/block/kyber-iosched.c b/block/kyber-iosched.c
index 564967fafe5f..b1b927224cd4 100644
--- a/block/kyber-iosched.c
+++ b/block/kyber-iosched.c
@@ -378,6 +378,7 @@ static void kyber_exit_sched(struct elevator_queue *e)
static int kyber_init_hctx(struct blk_mq_hw_ctx *hctx, unsigned int hctx_idx)
{
+ struct kyber_queue_data *kqd = hctx->queue->elevator->elevator_data;
struct kyber_hctx_data *khd;
int i;
@@ -400,6 +401,8 @@ static int kyber_init_hctx(struct blk_mq_hw_ctx *hctx, unsigned int hctx_idx)
khd->batching = 0;
hctx->sched_data = khd;
+ sbitmap_queue_shallow_depth(&hctx->sched_tags->bitmap_tags,
+ kqd->async_depth);
return 0;
}
--
2.7.4
next prev parent reply other threads:[~2018-05-09 20:49 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-09 20:49 [PATCHSET v2 0/7] blk-mq-sched and sbitmap shallow depth Jens Axboe
2018-05-09 20:49 ` [PATCH 1/7] blk-mq: don't call into depth limiting for reserved tags Jens Axboe
2018-05-09 20:49 ` [PATCH 2/7] bfq-iosched: don't worry about reserved tags in limit_depth Jens Axboe
2018-05-09 20:49 ` [PATCH 3/7] bfq: calculate shallow depths at init time Jens Axboe
2018-05-09 20:49 ` [PATCH 4/7] sbitmap: add helper to inform the core about shallow depth limiting Jens Axboe
2018-05-09 20:49 ` [PATCH 5/7] bfq-iosched: update shallow depth to smallest one used Jens Axboe
2018-05-09 20:49 ` [PATCH 6/7] bfq-iosched: remove unused variable Jens Axboe
2018-05-09 20:49 ` Jens Axboe [this message]
2018-05-10 4:32 ` [PATCHSET v2 0/7] blk-mq-sched and sbitmap shallow depth Paolo Valente
2018-05-10 16:20 ` Jens Axboe
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