Re: [PATCH] Small optimization for UP in sched and prefetch

Jeff Garzik (jgarzik@mandrakesoft.com)
Fri, 11 Jan 2002 05:51:14 -0500

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
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