linux-kernel - Re: [PATCH RFC] scsi: core: remove unsed 'restarts' from scsi

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Message-ID: <d8bd7bfd-7b19-cd8e-4f5b-928d5a721155@huaweicloud.com>
Date:   Mon, 28 Nov 2022 11:38:33 +0800
From:   Yu Kuai <yukuai1@...weicloud.com>
To:     Yu Kuai <yukuai1@...weicloud.com>, Ming Lei <ming.lei@...hat.com>
Cc:     jejb@...ux.ibm.com, martin.petersen@...cle.com,
        linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
        yi.zhang@...wei.com, "yukuai (C)" <yukuai3@...wei.com>
Subject: Re: [PATCH RFC] scsi: core: remove unsed 'restarts' from scsi_device



在 2022/11/28 11:35, Yu Kuai 写道:

> 
> Why the hw queue need to run if get budget never failed in this hw
> queue?

And by the way, after Jan's patch "blk-mq: Improve performance of non-mq
IO schedulers with multiple HW queues", scsi_run_queue_async() can only
garantee to run hw queue for the current cpu, not all the hw queues.