linux-kernel - Re: [GIT PULL] Second set of RISC-V updates for v5.5-rc1

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Message-ID: <alpine.DEB.2.21.9999.1912041128400.186402@viisi.sifive.com>
Date:   Wed, 4 Dec 2019 11:38:49 -0800 (PST)
From:   Paul Walmsley <paul.walmsley@...ive.com>
To:     Alistair Francis <Alistair.Francis@....com>
cc:     "anup@...infault.org" <anup@...infault.org>,
        "torvalds@...ux-foundation.org" <torvalds@...ux-foundation.org>,
        "linux-riscv@...ts.infradead.org" <linux-riscv@...ts.infradead.org>,
        Atish Patra <Atish.Patra@....com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "hch@....de" <hch@....de>
Subject: Re: [GIT PULL] Second set of RISC-V updates for v5.5-rc1

Alistair, Anup,

On Wed, 4 Dec 2019, Alistair Francis wrote:

> On Wed, 2019-12-04 at 18:22 +0530, Anup Patel wrote:
>
> > I had commented on your patch but my comments are still
> > not addressed.
> > 
> > Various debug options enabled by this patch have performance
> > impact. Instead of enabling these debug options in primary
> > defconfigs, I suggest to have separate debug defconfigs with
> > these options enabled.
> 
> +1
> 
> OE uses the defconfig (as I'm sure other distros do) and slowing down
> users seems like a bad idea.

While I respect your points of view, our defconfigs are oriented towards 
kernel developers.  This is particularly important when right now the only 
RISC-V hardware on the market are test chips.  Our expectation is that 
distros and benchmarkers will create their own Kconfigs for their needs.

Going forward, we'll probably add a few more validation and debug options, 
as Palmer suggested during the patch discussion.


- Paul