From: liubaozhu <liubaozhu@uniontech.com>
To: paolo.valente@linaro.org
Cc: axboe@kernel.dk, linux-block@vger.kernel.org,
linux-kernel@vger.kernel.org, liubaozhu <liubaozhu@uniontech.com>
Subject: [PATCH] block/bfq: the delta_from_first should be ns rather than us
Date: Wed, 21 Jul 2021 14:30:47 +0800 [thread overview]
Message-ID: <20210721063047.92122-1-liubaozhu@uniontech.com> (raw)
In the block/bfq-iosched.c,the function bfq_update_peak_rate(),
bfqd->delta_from_first = now_ns - bfqd->first_dispatch,
according to the subtraction operation here,now_ns is ns,
and bfqd->first_dispatch is also ns,so bfqd->delta_from_first should be ns.
Signed-off-by: liubaozhu <liubaozhu@uniontech.com>
---
block/bfq-iosched.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/block/bfq-iosched.h b/block/bfq-iosched.h
index 99c2a3cb0..7cf4fc8c3 100644
--- a/block/bfq-iosched.h
+++ b/block/bfq-iosched.h
@@ -632,7 +632,7 @@ struct bfq_data {
u64 tot_sectors_dispatched;
/* max rq size seen during current observation interval (sectors) */
u32 last_rq_max_size;
- /* time elapsed from first dispatch in current observ. interval (us) */
+ /* time elapsed from first dispatch in current observ. interval (ns) */
u64 delta_from_first;
/*
* Current estimate of the device peak rate, measured in
--
2.20.1
next reply other threads:[~2021-07-21 6:31 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-21 6:30 liubaozhu [this message]
2021-07-21 7:56 ` [PATCH] block/bfq: the delta_from_first should be ns rather than us Paolo Valente
[not found] ` <3A3B282C-FA5D-43F3-9C78-5E257C93A835@linaro.org>
2021-07-21 16:19 ` Jens Axboe
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