Re: [PATCH v3] doc: Add CPU Isolation documentation

From: Jonathan Corbet

Date: Sun Apr 12 2026 - 15:11:40 EST


Frederic Weisbecker <frederic@xxxxxxxxxx> writes:

> nohz_full was introduced in v3.10 in 2013, which means this
> documentation is overdue for 13 years.

I've seen worse :)

> Fortunately Paul wrote a part of the needed documentation a while ago,
> especially concerning nohz_full in Documentation/timers/no_hz.rst and
> also about per-CPU kthreads in
> Documentation/admin-guide/kernel-per-CPU-kthreads.rst
>
> Introduce a new page that gives an overview of CPU isolation in general.
>
> Acked-by: Waiman Long <longman@xxxxxxxxxx>
> Reviewed-by: Valentin Schneider <vschneid@xxxxxxxxxx>
> Reviewed-by: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
> Signed-off-by: Frederic Weisbecker <frederic@xxxxxxxxxx>
> ---
> v3: Apply suggestions from Randy, Steven, Valentin, Waiman and also Sashiko!
>
> Documentation/admin-guide/cpu-isolation.rst | 357 ++++++++++++++++++++
> Documentation/admin-guide/index.rst | 1 +
> 2 files changed, 358 insertions(+)
> create mode 100644 Documentation/admin-guide/cpu-isolation.rst

Applied, thanks.

jon