linux-kernel - Re: [PATCH v6 3/4] powerpc/lib: implement strlen() in assembly

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Message-ID: <20180612145315.GJ27520@gate.crashing.org>
Date:   Tue, 12 Jun 2018 09:53:15 -0500
From:   Segher Boessenkool <segher@...nel.crashing.org>
To:     Christophe Leroy <christophe.leroy@....fr>
Cc:     Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Michael Ellerman <mpe@...erman.id.au>, wei.guo.simon@...il.com,
        linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org
Subject: Re: [PATCH v6 3/4] powerpc/lib: implement strlen() in assembly

On Tue, Jun 12, 2018 at 09:14:53AM +0000, Christophe Leroy wrote:
> ---
> Not tested on PPC64.

It won't be acceptable until that happens.  It also is likely quite bad
performance on all 64-bit CPUs from the last fifteen years or so.  Or you
did nothing to prove otherwise, at least.

> + * Algorigthm:

Typo.


Segher