linux-kernel - Re: [PATCH v2 5/5] crypto/Documentation: Add crypto

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Date:   Mon, 9 Jan 2023 21:23:28 +0000
From:   Dmitry Safonov <dima@...sta.com>
To:     Jakub Kicinski <kuba@...nel.org>
Cc:     linux-kernel@...r.kernel.org, David Ahern <dsahern@...nel.org>,
        Eric Dumazet <edumazet@...gle.com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        "David S. Miller" <davem@...emloft.net>,
        Andy Lutomirski <luto@...capital.net>,
        Bob Gilligan <gilligan@...sta.com>,
        Dmitry Safonov <0x7f454c46@...il.com>,
        Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
        Leonard Crestez <cdleonard@...il.com>,
        Paolo Abeni <pabeni@...hat.com>,
        Salam Noureddine <noureddine@...sta.com>,
        netdev@...r.kernel.org, linux-crypto@...r.kernel.org
Subject: Re: [PATCH v2 5/5] crypto/Documentation: Add crypto_pool kernel API

On 1/7/23 02:06, Jakub Kicinski wrote:
> Some extra nits here since you need to respin for the build warning
> (include the document in some index / toc tree and adjust the length 
> of the underscores to match the line length).

Thanks again, will correct according to your review notes,

> 
> On Tue,  3 Jan 2023 18:42:57 +0000 Dmitry Safonov wrote:
>> diff --git a/Documentation/crypto/crypto_pool.rst b/Documentation/crypto/crypto_pool.rst
>> new file mode 100644
>> index 000000000000..4b8443171421
>> --- /dev/null
>> +++ b/Documentation/crypto/crypto_pool.rst
>> @@ -0,0 +1,33 @@
>> +.. SPDX-License-Identifier: GPL-2.0
>> +
>> +Per-CPU pool of crypto requests
>> +=============
>> +
>> +Overview
>> +--------
>> +The crypto pool API manages pre-allocated per-CPU pool of crypto requests,
>> +providing ability to use async crypto requests on fast paths, potentially
> 
> .. you *don't* enable async crypto in this series, right?
> 
>> +on atomic contexts. The allocation and initialization of the requests should
> 
> s/on/in/ atomic contexts
> 
>> +be done before their usage as it's slow-path and may sleep.
>> +
>> +Order of operations
>> +-------------------
>> +You are required to allocate a new pool prior using it and manage its lifetime.
> 
> The use of second person is quite uncommon for documentation, but if
> you prefer so be it..

I used Documentation/crypto/crypto_engine.rst as an example :-)
[where "example" was `cp crypto_{engine,pool}.rst && vim crypto_pool.rst`]

> 
>> +You can allocate a per-CPU pool of ahash requests by ``crypto_pool_alloc_ahash()``.
> 
> You don't need to use the backticks around function names and struct
> names. Our doc rendering system recognizes them automatically. 
> 
> `make htmldocs` to see for yourself.

Thanks,
          Dmitry