linux-kernel - Re: [PATCH RESEND 0/3] blk-mq: allow hardware queue to get more tag while sharing a tag set

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Message-ID: <daa6b7d6-5b4f-19f8-d89d-56f18c398d56@huawei.com>
Date:   Mon, 24 Jan 2022 11:46:29 +0800
From:   "yukuai (C)" <yukuai3@...wei.com>
To:     <axboe@...nel.dk>
CC:     <linux-block@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <yi.zhang@...wei.com>
Subject: Re: [PATCH RESEND 0/3] blk-mq: allow hardware queue to get more tag
 while sharing a tag set

在 2022/01/17 16:54, Yu Kuai 写道:
> Previous patch: https://lkml.org/lkml/2021/7/11/343
> 
> If there are multiple active queues while sharing a tag set, the available
> tags is limit to fair share for each active queue. This patchset take
> off such restriction if no one ever failed to get driver tag.
> 
> Yu Kuai (3):
>    blk-mq: add new interfaces to track if hctx failed to get driver tag
>    blk-mq: record how many hctx failed to get driver tag while sharing a
>      tag set
>    blk-mq: allow hardware queue to get more tag while sharing a tag set
> 
>   block/blk-mq-debugfs.c |  2 ++
>   block/blk-mq-tag.c     | 45 +++++++++++++++++++++++++++++++++++++++++-
>   block/blk-mq-tag.h     | 22 +++++++++++++++++++--
>   block/blk-mq.c         | 13 +++++++++---
>   block/blk-mq.h         |  4 ++++
>   include/linux/blk-mq.h | 12 +++++++++++
>   include/linux/blkdev.h |  2 ++
>   7 files changed, 94 insertions(+), 6 deletions(-)
> 

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