On Fri, Feb 27, 2009 at 03:22:39PM +0100, Rafael J. Wysocki wrote:
> On Friday 27 February 2009, Pavel Machek wrote:
> > Wakelocks done right are single atomic_t... and if you set it to 0,
> > you just unblock "sleeper" thread or something. Zero polling and very
> > simple...
>
> Except that you have to check all of the wakelocks periodically in a loop =>
> polling. So?
Why do you need to check them? If you're taking this approach you just
have something like:
suspend_unblock() {
if (atomc_dec_and_test(&suspend_lock))
suspend();
}
and then check that the lock count is still 0 after device_suspend().
There's no need to poll.
--
Matthew Garrett | mjg59@xxxxxxxxxxxxx
_______________________________________________
linux-pm mailing list
linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx
https://lists.linux-foundation.org/mailman/listinfo/linux-pm
