Hi! > Use the observation that try_to_freeze_tasks() need not loop while waiting for > the freezing tasks to enter the refrigerator and make it use a wait queue. > > The idea is that after sending freeze requests to the tasks regarded as > freezable try_to_freeze_tasks() can go to sleep and wait until at least one task > enters the refrigerator. The first task that does it wakes up > try_to_freeze_tasks() and the procedure is repeated. If the refrigerator is not > entered by any tasks before TIMEOUT expires, the freezing of tasks fails. > > This way, try_to_freeze_tasks() doesn't occupy the CPU unnecessarily when some > freezing tasks are waiting for I/O to complete. Ok, I guess this is as simple as it gets. ACK. Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
