From: Jeff Garzik <jgarzik@mandrakesoft.com>
To: Rainer Keller <Keller@hlrs.de>
Cc: linux-kernel@vger.kernel.org, Marcelo Tosatti <marcelo@conectiva.com.br>
Subject: Re: [PATCH] Small optimization for UP in sched and prefetch
Date: Fri, 11 Jan 2002 05:51:14 -0500 [thread overview]
Message-ID: <3C3EC3A2.C9C9D184@mandrakesoft.com> (raw)
In-Reply-To: <3C3EBF76.3AEB82AB@hlrs.de>
Rainer Keller wrote:
> PS: Because of usage of prefetch in include/linux/list.h, the memory
> prefetch is triggered 137 times on my configuration...
We need to merge in __builtin_prefetch support into the kernel, because
gcc 3.1 recently got support for it. It would be nice at least for
future prefetch-related patches to perhaps call __builtin_prefetch, and
have the headers substitute a prefetch if the compiler does not support
it.
Jeff
--
Jeff Garzik | Alternate titles for LOTR:
Building 1024 | Fast Times at Uruk-Hai
MandrakeSoft | The Took, the Elf, His Daughter and Her Lover
| Samwise Gamgee: International Hobbit of Mystery
next prev parent reply other threads:[~2002-01-11 10:51 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-01-11 10:33 [PATCH] Small optimization for UP in sched and prefetch Rainer Keller
2002-01-11 10:51 ` Jeff Garzik [this message]
2002-01-11 17:07 ` [PATCH] Small optimization for UP in sched and prefetch (take 3) Rainer Keller
2002-01-11 19:59 ` [PATCH] Small optimization for UP in sched and prefetch Robert Love
2002-01-11 20:02 ` Dave Jones
2002-01-11 20:07 ` Robert Love
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