Thanks for your response, Am 9/28/2024 um 1:33 PM schrieb Mathieu Desnoyers:
This is a userspace prototype. This will behave similarly to a userspace spinlock in that case, which is not great in terms of CPU usage, but should eventually unblock the waiter, unless it has a RT priority that really prevents any progress from the emergency slot owner. On my TODO list, I have a bullet about integrating with sys_futex to block on wait, wake up on slot release. I would then use the wait/wakeup code based on sys_futex already present in liburcu.
Oh, I see. I think if it is for userspace then it really should use wait/wakeup as you said.
Best wishes, jonas
