linux-kernel - Re: [RFC PATCH 4/4] membarrier: Introduce Kconfig ARCH_HAS

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Message-ID: <49366b42-7921-484a-af5e-578b41fac1c3@efficios.com>
Date:   Mon, 11 Dec 2023 11:54:11 -0500
From:   Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
To:     Andrea Parri <parri.andrea@...il.com>
Cc:     paulmck@...nel.org, palmer@...belt.com, paul.walmsley@...ive.com,
        aou@...s.berkeley.edu, mmaas@...gle.com, hboehm@...gle.com,
        striker@...ibm.com, charlie@...osinc.com, rehn@...osinc.com,
        linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH 4/4] membarrier: Introduce Kconfig ARCH_HAS_MEMBARRIER

On 2023-12-11 11:53, Andrea Parri wrote:
> On Mon, Dec 11, 2023 at 08:34:21AM -0500, Mathieu Desnoyers wrote:
>> On 2023-12-11 04:44, Andrea Parri wrote:
>>> Architectures supporting the "private expedited" membarrier command must
>>> select the Kconfig to use the command.  Document status and requirements
>>> for each architecture in a single file under Documentation/features.
>>
>> Sorry for being vague in my suggestion: I did not intend to make it
>> optional (not ARCH_HAS_MEMBARRIER), but rather just to have a central
>> place where this would be documented.
> 
> I see.
> 
> 
>> I'm not sure where in Documentation this should land though ?
> 
> Not sure, perhaps a section in (a new) Documentation/scheduler/membarrier.rst?

Yes, it makes sense.

Thanks!

Mathieu

> 
>    Andrea

-- 
Mathieu Desnoyers
EfficiOS Inc.
https://www.efficios.com