From: Andi Kleen <ak@suse.de>
To: Andrew Morton <akpm@zip.com.au>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [patch 4/21] fix ARCH_HAS_PREFETCH
Date: 11 Aug 2002 11:53:21 +0200 [thread overview]
Message-ID: <p73u1m1iuwe.fsf@oldwotan.suse.de> (raw)
In-Reply-To: Andrew Morton's message of "11 Aug 2002 10:02:40 +0200"
Andrew Morton <akpm@zip.com.au> writes:
> Which needs a working ARCH_HAS_PREFETCH to avoid probable extra code
> generation on CPUs which don't have prefetch.
When you use gcc 3.1+ you can use __builtin_prefetch() and gcc takes care of
it. See asm-x86_64/prefetch.h of a working example.
Of course generic C code should not use the ugly builtins directly, but
it could be used to define the wrappers.
-Andi
next parent reply other threads:[~2002-08-11 9:49 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <3D56147E.15E7A98@zip.com.au.suse.lists.linux.kernel>
2002-08-11 9:53 ` Andi Kleen [this message]
2002-08-11 7:38 [patch 4/21] fix ARCH_HAS_PREFETCH Andrew Morton
2002-08-11 19:49 ` Alan Cox
2002-08-11 18:47 ` Andrew Morton
2002-08-11 18:46 ` Larry McVoy
2002-08-11 19:06 ` Linus Torvalds
2002-08-13 21:42 ` Adrian Bunk
2002-08-13 22:12 ` H. Peter Anvin
2002-08-13 22:22 ` Adrian Bunk
2002-08-13 22:42 ` H. Peter Anvin
2002-08-14 17:40 ` Rogier Wolff
2002-08-14 19:41 ` H. Peter Anvin
2002-08-14 19:57 ` Jamie Lokier
2002-08-14 22:03 ` Daniel Jacobowitz
2002-08-14 20:45 ` Willy Tarreau
2002-08-14 20:58 ` H. Peter Anvin
2002-08-14 21:11 ` Willy Tarreau
2002-08-14 21:13 ` H. Peter Anvin
2002-08-15 1:23 ` Alan Cox
2002-08-15 1:28 ` H. Peter Anvin
2002-08-15 1:37 ` Alan Cox
2002-08-14 22:53 ` David Lang
2002-08-14 23:31 ` Jamie Lokier
2002-08-15 6:44 ` Willy Tarreau
2002-08-15 6:55 ` H. Peter Anvin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=p73u1m1iuwe.fsf@oldwotan.suse.de \
--to=ak@suse.de \
--cc=akpm@zip.com.au \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox