Re: [PATCH] Documentation/kernel-parameters: Remove "Deprecated" from isolcpus=

Re: [PATCH] Documentation/kernel-parameters: Remove "Deprecated" from isolcpus=

[Frederic Weisbecker]

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