* Re: [PATCH] Documentation/kernel-parameters: Remove "Deprecated" from isolcpus=
[not found] <20260427150739.bwVmmkj2@linutronix.de>
@ 2026-05-12 13:45 ` Frederic Weisbecker
0 siblings, 0 replies; only message in thread
From: Frederic Weisbecker @ 2026-05-12 13:45 UTC (permalink / raw)
To: Sebastian Andrzej Siewior
Cc: LKML, Gabriele Monaco, Ingo Molnar, Jonathan Corbet,
Marcelo Tosatti, Marco Crivellari, Michal Hocko,
Paul E . McKenney, Peter Zijlstra, Phil Auld, Steven Rostedt,
Thomas Gleixner, Valentin Schneider, Vlastimil Babka, Waiman Long,
linux-doc, Bagas Sanjaya, Shuah Khan, John Ogness
Le Mon, Apr 27, 2026 at 05:07:39PM +0200, Sebastian Andrzej Siewior a écrit :
> The isolcpus= option has been marked as deprecated in 2017. Back then it
> was desired for the domain sub option to be configured dynamically at
> runtime instead using this boot command line which provides a static
> configuration. In the meantime this option was extended by other sub
> options which don't have runtime counterpart or it does not make sense
> to provide one.
>
> The deprecated part always referred to the default `domain' sub option
> but it was not obvious. Also the reasoning behind the deprecation is
> sort of dubious: There is nothing wrong with a static configuration if
> there is no desired to reconfigure. This is useful on systems which
> have one purpose and the CPU partition configuration is not changed for
> the entire lifetime.
>
> Remove the "Deprecated" note. Remove the part of the description which
> suggest to use cpuset.sched_load_balance and instead point to the
> documentation file which explains how to use cpusets to configure this
> at runtime.
>
> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Acked-by: Frederic Weisbecker <frederic@kernel.org>
--
Frederic Weisbecker
SUSE Labs
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