From: Joris van Rantwijk <jorispubl@xs4all.nl>
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Inflation of vmlinux by linker on x86_64
Date: Fri, 26 Sep 2008 21:50:11 +0200 [thread overview]
Message-ID: <eb34240721c0b92818908672eccecf62@xs4all.nl> (raw)
In-Reply-To: <48DD2F68.6000609@zytor.com>
On 26 sep 2008, at 20:52, H. Peter Anvin wrote:
> Instead of adding a comment like this, we should simply rename it
> memmove().
Yes. I tried, but it clashed with an existing memmove declaration in
asm-x86/string_32.h.
What is the accepted solution for this?
Redefining memmove should be allowed, but then it could no longer be a
static function.
Using the memmove implementation from the main kernel would be painful
and ugly.
We could also define "__memmove()" plus "#define memmove __memmove",
which would also be ugly.
> Furthermore, we probably spend enough time copying that using a real
> memmove() implementation, using string instructions, would be good.
Are string instructions that much faster?
We can also get some speedup by copying ints instead of chars.
Joris.
next prev parent reply other threads:[~2008-09-26 19:57 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-26 12:42 Joris van Rantwijk
2008-09-26 18:52 ` H. Peter Anvin
2008-09-26 19:50 ` Joris van Rantwijk [this message]
2008-09-26 20:07 ` H. Peter Anvin
2008-09-26 21:55 ` Joris van Rantwijk
2008-09-26 21:57 ` H. Peter Anvin
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