From: Akira Tsukamoto <at541@columbia.edu>
To: Andi Kleen <ak@suse.de>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH] 1/2 2.5.45 cleanup & add original copy_ro/from_user
Date: Sat, 02 Nov 2002 06:04:20 -0500 [thread overview]
Message-ID: <20021102055614.0327.AT541@columbia.edu> (raw)
In-Reply-To: <p737kfws378.fsf@oldwotan.suse.de>
On 02 Nov 2002 10:58:35 +0100
Andi Kleen <ak@suse.de> mentioned:
> Akira Tsukamoto <at541@columbia.edu> writes:
>
> > This patch will:
> > 1) If it is not X86_MPENTIUMIII or 4, use the original copy routines,
> > which does not exist in 2.5.45.
>
> First you're ignoring Athlon, which also prefers unrolled copies.
>
> The old user copy functions should then only used when not optimizing for
> modern cpus, but not when the minimum level is 386. And perhaps when
> CONFIG_SMALL is defined.
Yes, it is ignoring Athlon because my patch is basically just clean up and not changing
anything.
If you read the 2.5.45, you will see *2.5.45* is also ignoring Athlon and not using
unrolled copies.
I am working on optimized version for AMD, go over on this patch.
But thank you for your comment, I will consider using CONFIG_SMALL for
putting all the old stuff in it.
next prev parent reply other threads:[~2002-11-02 11:58 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20021102024957.220C.AT541@columbia.edu.suse.lists.linux.kernel>
2002-11-02 9:58 ` Andi Kleen
2002-11-02 11:04 ` Akira Tsukamoto [this message]
2002-11-02 8:06 Akira Tsukamoto
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