On Thu, Jul 23, 2015 at 06:42:10PM +0200, Frederic Weisbecker wrote:
> +unsigned long __tick_nohz_set_tick_dependency(enum tick_dependency_bit bit,
> + unsigned long *dep)
> +{
> + unsigned long prev;
> + unsigned long old = *dep;
> + unsigned long mask = BIT_MASK(bit);
> +
> + while ((prev = cmpxchg(dep, old, old | mask)) != old) {
> + old = prev;
> + cpu_relax();
> + }
> +
> + return prev;
> +}
That's typically called a fetch_or(). The function name, which is
entirely too long, also doesn't suggest a return value.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
