Re: [PATCH v11 1/7] locking/mutex: Remove wakeups from under mutex::wait_lock

[Peter Zijlstra]

On Tue, Jul 09, 2024 at 01:31:44PM -0700, John Stultz wrote:
> @@ -405,8 +409,10 @@ ww_mutex_set_context_fastpath(struct ww_mutex *lock, struct ww_acquire_ctx *ctx)
>  	 * die or wound us.
>  	 */
>  	lock_wait_lock(&lock->base);
> -	__ww_mutex_check_waiters(&lock->base, ctx);
> +	__ww_mutex_check_waiters(&lock->base, ctx, &wake_q);

  preempt_disable()

>  	unlock_wait_lock(&lock->base);
> +
> +	wake_up_q(&wake_q);

  preempt_enable();

>  }
>  
>  static __always_inline int