In message <Pine.LNX.4.44.0305072221120.16772-100000@home.transmeta.com> you write:
> In other words, the proper way to do set_cpu() is
>
> int set_cpu(int cpu)
> {
> fd_set cpuset;
>
> FD_ZERO(&cpuset);
> FD_SET(cpu, cpuset);
> return sched_setaffinity(getpid(), sizeof(cpuset), &cpuset);
> }
>
> which is a HELL OF A LOT more readable than the crap you're spouting
> (either your "before" _or_ your "after" crap).
Sorry, I remember your solution now. You're absolutely right (still).
I preferred the "include/exclude" flag, which covers the "what to do
when cpus come online/go offline" as well as the size issue, but
that's personal preference.
However, I shall dutifully attack the glibc people for this, then
(/usr/include/sched.h):
#ifdef __USE_GNU
/* Set the CPU affinity for a task */
extern int sched_setaffinity (__pid_t __pid, unsigned long int __len,
unsigned long int *__mask) __THROW;
/* Get the CPU affinity for a task */
extern int sched_getaffinity (__pid_t __pid, unsigned long int __len,
unsigned long int *__mask) __THROW;
#endif
Thanks!
Rusty.
-- Anyone who quotes me in their sig is an idiot. -- Rusty Russell. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Thu May 15 2003 - 22:00:26 EST