Re: Linux 2.4.19-rc3 (hyperthreading)

[Bill Davidsen]

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 <[e-mail]>
  CTO, TMR Associates, Inc
Doing interesting things with little computers since 1979.