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

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Message-ID: <20221125114454.yfh2mtctbi3nkud7@kamzik>
Date:   Fri, 25 Nov 2022 12:44:54 +0100
From:   Andrew Jones <ajones@...tanamicro.com>
To:     Conor Dooley <conor@...nel.org>
Cc:     Heiko Stübner <heiko@...ech.de>,
        Prabhakar <prabhakar.csengg@...il.com>,
        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>,
        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

On Thu, Nov 24, 2022 at 08:05:40PM +0000, Conor Dooley wrote:
> On Thu, Nov 24, 2022 at 08:58:41PM +0100, Heiko Stübner 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.
> 
> Oh I can promise you that there'll be a #4 ;)

I took a stab[*] at cleaning up alternative-macros.h a bit in order to
prepare for _3, _4, ..., _42. The idea was to try and find a way to
reduce as much duplication as possible, both in the current code and
in the new macros.

[*] https://lore.kernel.org/all/20221125113959.35328-1-ajones@ventanamicro.com/

Thanks,
drew