[PATCH v2 05/10] um: Determine sleep based on need_resched()

[Johannes Berg]

On Sun, 2025-08-10 at 13:51 +0800, Tiwei Bie wrote:
> 
>  void um_idle_sleep(void)
>  {
> -	if (time_travel_mode != TT_MODE_OFF)
> +	if (time_travel_mode != TT_MODE_OFF) {
>  		time_travel_sleep();
> -	else
> +	} else {
> +		raw_local_irq_enable();
>  		os_idle_sleep();
> +		raw_local_irq_disable();
> +	}

This seems wrong, with it, lockdep gets really unhappy, and if I remove
this change it seems to work OK?

I'll note that arch_cpu_idle() for x86 also doesn't change anything with
interrupts.

Was there something else that required this change that I'm missing?

johannes