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SubjectRe: spin_lock forgets to clobber memory and other smp fixes [was Re: [patch] waitqueue optimization, 2.4.0-test7]
On Thu, 7 Sep 2000, Jamie Lokier wrote:

>int *p;
>int func()
>{
> int x;
> x = *p;
> __asm__ __volatile__ ("" : : : "memory");
> x = *p;
> return x;
>}
>

Defintely none difference here (-fstrict-aliasing doesn't change anything
either).

andrea@inspiron:~ > gcc -v
Reading specs from /usr/lib/gcc-lib/i486-suse-linux/2.95.2/specs
gcc version 2.95.2 19991024 (release)

Andrea

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