Re: Linux 2.4.19-rc3 (hyperthreading)

Bill Davidsen (davidsen@tmr.com)
Tue, 30 Jul 2002 23:08:19 -0400 (EDT)


On Tue, 30 Jul 2002, J.A. Magallon wrote:

> How about this version (gcc-3.2 generates the same amount of assembler):

Now *that* is readable code!

> int find(int this_cpu)
> {
> int i;
>
> for ( i = (this_cpu+1)%smp_num_cpus;
> i != this_cpu;
> i = (i+1)%smp_num_cpus )
> {
> int physical = cpu_logical_map(i);
> int sibling = cpu_sibling_map[physical];
>
> if (idle_cpu(physical) && idle_cpu(sibling))
> return physical;
> }
> return -1;
> }

-- 
bill davidsen <davidsen@tmr.com>
  CTO, TMR Associates, Inc
Doing interesting things with little computers since 1979.

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