linux-kernel - Re: [PATCH v4 1/7] riscv: asm: alternative-macros: Introduce ALTERNATIVE

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Date:   Fri, 25 Nov 2022 10:02:21 +0000
From:   "Lad, Prabhakar" <prabhakar.csengg@...il.com>
To:     Heiko Stübner <heiko@...ech.de>
Cc:     Conor Dooley <conor@...nel.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Magnus Damm <magnus.damm@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor.dooley@...rochip.com>,
        Guo Ren <guoren@...nel.org>,
        Jisheng Zhang <jszhang@...nel.org>,
        Atish Patra <atishp@...osinc.com>,
        Anup Patel <apatel@...tanamicro.com>,
        Andrew Jones <ajones@...tanamicro.com>,
        Nathan Chancellor <nathan@...nel.org>,
        Philipp Tomsich <philipp.tomsich@...ll.eu>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-riscv@...ts.infradead.org, linux-renesas-soc@...r.kernel.org,
        Biju Das <biju.das.jz@...renesas.com>,
        Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: Re: [PATCH v4 1/7] riscv: asm: alternative-macros: Introduce
 ALTERNATIVE_3() macro

Hi Heiko,

On Thu, Nov 24, 2022 at 7:58 PM Heiko Stübner <heiko@...ech.de> wrote:
>
> Am Donnerstag, 24. November 2022, 20:52:33 CET schrieb Conor Dooley:
> > On Thu, Nov 24, 2022 at 05:22:01PM +0000, Prabhakar wrote:
> > > From: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
> > >
> > > Introduce ALTERNATIVE_3() macro.
> >
> > Bit perfunctory I think! There's a lovely comment down below that would
> > make for a better commit message if you were to yoink it.
> > Content looks about what I'd expect to see though.
>
> Also both the comment on the original ALTERNATIVE_2 and the new ALTERNATIVE_3
> should probably be merged into a single comment explaining this once for all
> ALTERNATIVE_x variants.
>
> Especially with the dma stuff, I'm pretty sure we'll get at least an ALTERNATIVE_4
> if not even more ;-) . So we defnitly don't want to repeat this multiple times.
>
Do agree. How about the below?

/*
 * Similar to what ALTERNATIVE_2() macro does but with an additional
 * vendor content.
 */

So the other ALTERNATIVE_2+() macros will keep on building on it.

Cheers,
Prabhakar