From: Tejun Heo <tj@kernel.org>
To: Yuri Andriaccio <yuri.andriaccio@santannapisa.it>
Cc: luca abeni <luca.abeni@santannapisa.it>,
Peter Zijlstra <peterz@infradead.org>,
Yuri Andriaccio <yurand2000@gmail.com>,
Ingo Molnar <mingo@redhat.com>,
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>, Mel Gorman <mgorman@suse.de>,
Valentin Schneider <vschneid@redhat.com>,
linux-kernel@vger.kernel.org, hannes@cmpxchg.org,
mkoutny@suse.com, cgroups@vger.kernel.org
Subject: Re: [RFC PATCH v5 20/29] sched/deadline: Allow deeper hierarchies of RT cgroups
Date: Tue, 12 May 2026 08:20:50 -1000 [thread overview]
Message-ID: <agNvghphiv9sCJrq@slm.duckdns.org> (raw)
In-Reply-To: <b549b3cb062f2823ba6d4723b7b9260b@kernel.org>
On Tue, May 12, 2026 at 08:19:02AM -1000, Tejun Heo wrote:
> How is a delegated subtree prevented from setting cpu.rt.min = 'root' and
> escaping its ancestors' cpu.rt.max budget?
Hmm.. I guess the same problem exists w/ separate rt controller too. If the
users on the system already started using rt, how do you enable the
controller from the top down with budgets already being used down in the
hierarchy?
Thanks.
--
tejun
next prev parent reply other threads:[~2026-05-12 18:20 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20260430213835.62217-1-yurand2000@gmail.com>
[not found] ` <20260430213835.62217-14-yurand2000@gmail.com>
2026-05-05 13:04 ` [RFC PATCH v5 13/29] sched/rt: Implement dl-server operations for rt-cgroups Peter Zijlstra
[not found] ` <20260430213835.62217-15-yurand2000@gmail.com>
2026-05-05 13:16 ` [RFC PATCH v5 14/29] sched/rt: Update task event callbacks for HCBS scheduling Peter Zijlstra
[not found] ` <20260430213835.62217-16-yurand2000@gmail.com>
2026-05-05 14:36 ` [RFC PATCH v5 15/29] sched/rt: Update rt-cgroup schedulability checks Peter Zijlstra
[not found] ` <20260430213835.62217-19-yurand2000@gmail.com>
2026-05-05 14:59 ` [RFC PATCH v5 18/29] sched/core: Cgroup v2 support Peter Zijlstra
2026-05-06 19:58 ` luca abeni
2026-05-07 7:01 ` Peter Zijlstra
2026-05-07 13:30 ` luca abeni
2026-05-07 14:16 ` Peter Zijlstra
[not found] ` <20260430213835.62217-20-yurand2000@gmail.com>
2026-05-05 15:01 ` [RFC PATCH v5 19/29] sched/rt: Remove support for cgroups-v1 Peter Zijlstra
2026-05-07 15:35 ` Juri Lelli
[not found] ` <20260430213835.62217-21-yurand2000@gmail.com>
2026-05-05 15:15 ` [RFC PATCH v5 20/29] sched/deadline: Allow deeper hierarchies of RT cgroups Peter Zijlstra
2026-05-05 19:56 ` Tejun Heo
2026-05-07 10:53 ` Peter Zijlstra
2026-05-07 15:03 ` Juri Lelli
2026-05-07 15:05 ` Peter Zijlstra
2026-05-07 16:39 ` luca abeni
2026-05-11 9:29 ` Juri Lelli
2026-05-11 17:52 ` Tejun Heo
2026-05-07 16:44 ` luca abeni
2026-05-11 9:40 ` luca abeni
2026-05-11 18:15 ` Tejun Heo
2026-05-11 17:37 ` Tejun Heo
2026-05-07 14:30 ` luca abeni
2026-05-11 18:28 ` Tejun Heo
2026-05-12 17:38 ` Yuri Andriaccio
2026-05-12 18:19 ` Tejun Heo
2026-05-12 18:20 ` Tejun Heo [this message]
[not found] ` <20260430213835.62217-23-yurand2000@gmail.com>
2026-05-05 15:20 ` [RFC PATCH v5 22/29] sched/rt: Add rt-cgroup migration functions Peter Zijlstra
2026-05-05 15:24 ` Peter Zijlstra
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