Re: [PATCH v2 4/4] Documentation: no_hz: Add tick stop in polling idle

[Frederic Weisbecker <frederic@kernel.org>]

Le Wed, Nov 11, 2026 at 12:43:50PM +0100, Marco Crivellari a écrit :
> On nohz_full CPUs the scheduling-clock tick is stopped while polling.
> Update the documentation accordingly.
> 
> Cc: Anna-Maria Behnsen <anna-maria@linutronix.de>
> Cc: Thomas Gleixner <tglx@kernel.org>
> Cc: Jonathan Corbet <corbet@lwn.net>
> Cc: Shuah Khan <skhan@linuxfoundation.org>
> Cc: Randy Dunlap <rdunlap@infradead.org>
> Signed-off-by: Marco Crivellari <marco.crivellari@suse.com>
> ---
>  Documentation/timers/no_hz.rst | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/Documentation/timers/no_hz.rst b/Documentation/timers/no_hz.rst
> index 4006cab64079..86cea04d2a49 100644
> --- a/Documentation/timers/no_hz.rst
> +++ b/Documentation/timers/no_hz.rst
> @@ -246,6 +246,8 @@ Known Issues
>  		be even worse than that of dyntick-idle.  Furthermore,
>  		this parameter effectively disables Turbo Mode on Intel
>  		CPUs, which can significantly reduce maximum performance.
> +		Note also that on nohz_full CPUs the scheduling-clock tick
> +		is stopped while polling, as in the other idle states.

Reviewed-by: Frederic Weisbecker <frederic@kernel.org>

-- 
Frederic Weisbecker
SUSE Labs