netdev - Re: [PATCH 30/33] kthread: Add API to update preferred affinity on kthread runtime

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Message-ID: <aQuIzQo3tDbwoytv@localhost.localdomain>
Date: Wed, 5 Nov 2025 18:26:37 +0100
From: Frederic Weisbecker <frederic@...nel.org>
To: Simon Horman <horms@...nel.org>
Cc: LKML <linux-kernel@...r.kernel.org>,
	Michal Koutný <mkoutny@...e.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Catalin Marinas <catalin.marinas@....com>,
	Danilo Krummrich <dakr@...nel.org>,
	"David S . Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Gabriele Monaco <gmonaco@...hat.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Ingo Molnar <mingo@...hat.com>, Jakub Kicinski <kuba@...nel.org>,
	Jens Axboe <axboe@...nel.dk>, Johannes Weiner <hannes@...xchg.org>,
	Lai Jiangshan <jiangshanlai@...il.com>,
	Marco Crivellari <marco.crivellari@...e.com>,
	Michal Hocko <mhocko@...e.com>, Muchun Song <muchun.song@...ux.dev>,
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	Shakeel Butt <shakeel.butt@...ux.dev>, Tejun Heo <tj@...nel.org>,
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	Vlastimil Babka <vbabka@...e.cz>, Waiman Long <longman@...hat.com>,
	Will Deacon <will@...nel.org>, cgroups@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-block@...r.kernel.org,
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	netdev@...r.kernel.org
Subject: Re: [PATCH 30/33] kthread: Add API to update preferred affinity on
 kthread runtime

Le Tue, Oct 14, 2025 at 01:35:43PM +0100, Simon Horman a écrit :
> On Mon, Oct 13, 2025 at 10:31:43PM +0200, Frederic Weisbecker wrote:
> 
> ...
> 
> > @@ -900,6 +899,46 @@ int kthread_affine_preferred(struct task_struct *p, const struct cpumask *mask)
> >  }
> >  EXPORT_SYMBOL_GPL(kthread_affine_preferred);
> >  
> > +/**
> > + * kthread_affine_preferred_update - update a kthread's preferred affinity
> > + * @p: thread created by kthread_create().
> > + * @cpumask: new mask of CPUs (might not be online, must be possible) for @k
> > + *           to run on.
> 
> nit: @mask: ...

Thanks! I'm dropping the current patch anyway but...

> 
> Likewise for the documentation of kthread_affine_preferred()
> in a subsequent patch in this series.

...fixing it to that patch.

-- 
Frederic Weisbecker
SUSE Labs