On Tue, May 26, 2020 at 06:11:01PM +0200, Peter Zijlstra wrote:
> +void flush_smp_call_function_from_idle(void)
> +{
> + unsigned long flags;
> +
> + if (llist_empty(this_cpu_ptr(&call_single_queue)))
> + return;Now it seems weird that sched_ttwu_pending() didn't have that llist_empty() optimization. The ordering should allow it. Anyway, Reviewed-by: Frederic Weisbecker <[email protected]>
