Re: [PATCH v3 08/13] sched/wait: Add a waitqueue helper for fully exclusive priority waiters

Hello Sean,

On 5/23/2025 5:22 AM, Sean Christopherson wrote:

Add a waitqueue helper to add a priority waiter that requires exclusive wakeups, i.e. that requires that it be the _only_ priority waiter. The API will be used by KVM to ensure that at most one of KVM's irqfds is bound to a single eventfd (across the entire kernel).

Open code the helper instead of using __add_wait_queue() so that the common path doesn't need to "handle" impossible failures.

Cc: K Prateek Nayak kprateek.nayak@amd.com

Feel free to include:

Reviewed-by: K Prateek Nayak kprateek.nayak@amd.com