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From: Tejun Heo <tj@kernel.org>
To: Xi Wang <xii@google.com>
Cc: "Frederic Weisbecker" <frederic@kernel.org>,
	linux-kernel@vger.kernel.org, cgroups@vger.kernel.org,
	"Ingo Molnar" <mingo@redhat.com>,
	"Peter Zijlstra" <peterz@infradead.org>,
	"Juri Lelli" <juri.lelli@redhat.com>,
	"Vincent Guittot" <vincent.guittot@linaro.org>,
	"Dietmar Eggemann" <dietmar.eggemann@arm.com>,
	"Steven Rostedt" <rostedt@goodmis.org>,
	"Ben Segall" <bsegall@google.com>,
	"David Rientjes" <rientjes@google.com>,
	"Mel Gorman" <mgorman@suse.de>,
	"Valentin Schneider" <vschneid@redhat.com>,
	"Waiman Long" <longman@redhat.com>,
	"Johannes Weiner" <hannes@cmpxchg.org>,
	"Michal Koutný" <mkoutny@suse.com>,
	"Vlastimil Babka" <vbabka@suse.cz>,
	"Dan Carpenter" <dan.carpenter@linaro.org>,
	"Chen Yu" <yu.c.chen@intel.com>, "Kees Cook" <kees@kernel.org>,
	"Yu-Chun Lin" <eleanor15x@gmail.com>,
	"Thomas Gleixner" <tglx@linutronix.de>,
	"Mickaël Salaün" <mic@digikod.net>,
	jiangshanlai@gmail.com
Subject: Re: [RFC/PATCH] sched: Support moving kthreads into cpuset cgroups
Date: Wed, 7 May 2025 07:36:55 -1000	[thread overview]
Message-ID: <aBuaN-xtOMs17ers@slm.duckdns.org> (raw)
In-Reply-To: <CAOBoifgp=oEC9SSgFC+4_fYgDgSH_Z_TMgwhOxxaNZmyD-ijig@mail.gmail.com>

Hello,

On Wed, May 07, 2025 at 10:23:24AM -0700, Xi Wang wrote:
> Overall I think your arguments depend on kernel and application threads are
> significantly different for cpu affinity management, but there isn't enough
> evidence for it. If cpuset is a bad idea for kernel threads it's probably not
> a good idea for user threads either. Maybe we should just remove cpuset from
> kernel and let applications threads go with boot time global variables and
> set their own cpu affinities.

I can't tell whether you're making a good faith argument. Even if you are,
you're making one bold claim without much substance and then jumping to the
other extreme based on that. This isn't a productive way to discuss these
things.

Thanks.

-- 
tejun

  reply	other threads:[~2025-05-07 17:36 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-05-06 18:35 [RFC/PATCH] sched: Support moving kthreads into cpuset cgroups Xi Wang
2025-05-06 19:57 ` Waiman Long
2025-05-06 23:15   ` Xi Wang
2025-05-07  0:17 ` Tejun Heo
2025-05-07  3:43   ` Xi Wang
2025-05-07 14:11     ` Frederic Weisbecker
2025-05-07 17:23       ` Xi Wang
2025-05-07 17:36         ` Tejun Heo [this message]
2025-05-07 20:07           ` Xi Wang
2025-05-08  0:08             ` Frederic Weisbecker
2025-05-08 17:51               ` Xi Wang
2025-05-08 19:34                 ` Waiman Long
2025-05-08 22:39                   ` Xi Wang
2025-05-09  0:30                     ` Waiman Long
2025-05-09 16:52                       ` Xi Wang
2025-05-12 10:36 ` Michal Koutný
2025-05-12 18:55   ` Xi Wang

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