From: Jens Axboe <axboe@kernel.dk>
To: Christoph Hellwig <hch@infradead.org>
Cc: linux-block@vger.kernel.org
Subject: Re: [PATCH 4/4] block: move update request helpers into blk-mq.c
Date: Wed, 13 Oct 2021 11:57:51 -0600 [thread overview]
Message-ID: <2418e448-6df4-ce6e-da2d-99fb7ac41fcb@kernel.dk> (raw)
In-Reply-To: <YWcdXjZPpYvuaJ5O@infradead.org>
On 10/13/21 11:54 AM, Christoph Hellwig wrote:
> On Wed, Oct 13, 2021 at 11:46:40AM -0600, Jens Axboe wrote:
>> On 10/13/21 11:32 AM, Christoph Hellwig wrote:
>>> On Wed, Oct 13, 2021 at 10:49:37AM -0600, Jens Axboe wrote:
>>>> For some reason we still have them in blk-core, with the rest of the
>>>> request completion being in blk-mq. That causes and out-of-line call
>>>> for each completion.
>>>>
>>>> Move them into blk-mq.c instead.
>>>
>>> The status/errno helpers really are core code. And if we change
>>> the block_rq_complete tracepoint to just take the status and do the
>>> conversion inside the trace event to avoid the fast path out of line
>>> call.
>>
>> It's all core code at this point imho, there's on request based without
>> mq.
>
> But the errno mapping is just as relevant for bio based drivers.
It's not like they are conditionally enabled, if you get one you get
the other. But I can shuffle it around if it means a lot to you...
--
Jens Axboe
next prev parent reply other threads:[~2021-10-13 17:57 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-13 16:49 [PATCHSET 0/4] Various block optimizations Jens Axboe
2021-10-13 16:49 ` [PATCH 1/4] block: provide helpers for rq_list manipulation Jens Axboe
2021-10-13 17:11 ` Christoph Hellwig
2021-10-13 17:47 ` Jens Axboe
2021-10-13 16:49 ` [PATCH 2/4] block: inline fast path of driver tag allocation Jens Axboe
2021-10-13 17:22 ` Christoph Hellwig
2021-10-13 17:46 ` Jens Axboe
2021-10-13 17:57 ` Christoph Hellwig
2021-10-13 18:07 ` Jens Axboe
2021-10-13 16:49 ` [PATCH 3/4] block: don't bother iter advancing a fully done bio Jens Axboe
2021-10-13 17:26 ` Christoph Hellwig
2021-10-13 17:46 ` Jens Axboe
2021-10-13 16:49 ` [PATCH 4/4] block: move update request helpers into blk-mq.c Jens Axboe
2021-10-13 17:32 ` Christoph Hellwig
2021-10-13 17:46 ` Jens Axboe
2021-10-13 17:54 ` Christoph Hellwig
2021-10-13 17:57 ` Jens Axboe [this message]
2021-10-14 5:00 ` Christoph Hellwig
2021-10-14 15:14 ` Jens Axboe
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