On Wed, Aug 30, 2023 at 10:42:39AM -0700, Elliot Berman wrote: > Avoid the spurious wakeups by saving the state of TASK_FREEZABLE tasks. > If the task was running before entering TASK_FROZEN state > (__refrigerator()) or if the task received a wake up for the saved > state, then the task is woken on thaw. saved_state from PREEMPT_RT locks > can be re-used because freezer would not stomp on the rtlock wait flow: > TASK_RTLOCK_WAIT isn't considered freezable. You don't actually assert that anywhere I think, so the moment someone makes that happen you crash and burn. Also: > -#ifdef CONFIG_PREEMPT_RT > +#if IS_ENABLED(CONFIG_PREEMPT_RT) || IS_ENABLED(CONFIG_FREEZER) That makes wakeup more horrible for everyone :/
