On Wed, May 29, 2024 at 08:00:50PM +0200, Bernd Schubert wrote:
> This is needed by fuse-over-io-uring to wake up the waiting
> application thread on the core it was submitted from.
> Avoiding core switching is actually a major factor for
> fuse performance improvements of fuse-over-io-uring.
Then maybe split that into a separate enhancement?
> --- a/kernel/sched/wait.c
> +++ b/kernel/sched/wait.c
> @@ -132,6 +132,7 @@ void __wake_up_on_current_cpu(struct wait_queue_head *wq_head, unsigned int mode
> {
> __wake_up_common_lock(wq_head, mode, 1, WF_CURRENT_CPU, key);
> }
> +EXPORT_SYMBOL(__wake_up_on_current_cpu);
I'll leave it to the scheduler maintainers if they want this exported
at all and if yes with the __-prefix and without a kerneldoc comment
explaining the API, but anything this low-level should be
EXPORT_SYMBOL_GPL for sure.
