Re: [RFC/RFT][PATCH v2 2/6] sched: idle: Do not stop the tick upfront in the idle loop

[Frederic Weisbecker]

On Tue, Mar 06, 2018 at 10:02:15AM +0100, Rafael J. Wysocki wrote:
> Index: linux-pm/kernel/sched/idle.c
> ===================================================================
> --- linux-pm.orig/kernel/sched/idle.c
> +++ linux-pm/kernel/sched/idle.c
> @@ -220,13 +220,17 @@ static void do_idle(void)
>  	 */
>  
>  	__current_set_polling();
> -	tick_nohz_idle_enter();
> +	tick_nohz_idle_prepare();

Since we leave tick_nohz_idle_exit() unchanged, can we keep tick_nohz_idle_prepare()
under the name tick_nohz_idle_enter() so that we stay symetric? And then make xen call
the two functions:

    tick_nohz_idle_enter();
    tick_nohz_idle_go_idle();

Also can we rename tick_nohz_idle_go_idle() to tick_nohz_idle_stop_tick() ?
This will be more self-explanatory.

Thanks.