Re: [PATCH 15/15] tick: Assume timekeeping is correctly handed over upon last offline idle call

[Thomas Gleixner]

On Wed, Jan 24 2024 at 18:04, Frederic Weisbecker wrote:
> The timekeeping duty is handed over from the outgoing CPU on stop
> machine, then the oneshot tick is stopped right after.  Therefore it's
> guaranteed that the current CPU isn't the timekeeper upon its last call
> to idle.
>
> Besides, calling tick_nohz_idle_stop_tick() while the dying CPU goes
> into idle suggests that the tick is going to be stopped while it is
> actually stopped already from the appropriate CPU hotplug state.
>
> Remove the confusing call and the obsolete case handling and convert it
> to a sanity check that verifies the above assumption.
>
> Signed-off-by: Frederic Weisbecker <frederic@xxxxxxxxxx>

Reviewed-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>