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From: Aaron Tomlin <atomlin@atomlin.com>
To: oleg@redhat.com, frederic@kernel.org, peterz@infradead.org
Cc: nick.lange@gmail.com, seun.ewulomi@gmail.com,
	mtosatti@redhat.com,  linux-kernel@vger.kernel.org
Subject: Re: [RFC PATCH 0/1] sched/isolation: Warn when maxcpus= is specified with nohz_full= or isolcpus=
Date: Wed, 8 Jan 2025 21:14:45 +0000 (GMT)	[thread overview]
Message-ID: <caabddb6-2c36-1372-e94c-9a50c659f5fb@atomlin.com> (raw)
In-Reply-To: <b51c2515-8cbc-ac7e-97ea-c6fd0e07cad6@atomlin.com>

On Sun, 1 Dec 2024, Aaron Tomlin wrote:
> Hi Oleg, Frederic, Peter,
>
> I have seen a case where maxcpus=1 and e.g. nohz_full=1,3-31, was used to
> force the CPU affinity of certain unbound or non CPU-specific kernel
> threads at boot-time. Albeit, since commit 9cc5b8656892a ("isolcpus: Affine
> unbound kernel threads to housekeeping cpus") this is handled entirely via
> nohz_full=. I thought it might be worth adding a warning.
>
>
> Aaron Tomlin (1):
>   sched/isolation: Warn when maxcpus= is specified with nohz_full= or
>     isolcpus=
>
>  kernel/sched/isolation.c | 2 ++
>  1 file changed, 2 insertions(+)
>
> --
> 2.47.1

Hi Oleg, Frederic, Peter,

Any thoughts?

-- 
Aaron Tomlin

      parent reply	other threads:[~2025-01-08 21:14 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-12-01 18:42 Aaron Tomlin
2025-01-08 21:10 ` Aaron Tomlin
2025-01-08 21:14 ` Aaron Tomlin [this message]

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