lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Message-ID: <nt6pfc3lwud2k3eakjr7qutseuhtislao4jr43a5355tjqnbnb@6deb5jxmwadr>
Date: Thu, 3 Apr 2025 14:20:59 +0200
From: Michal Koutný <mkoutny@...e.com>
To: Peter Zijlstra <peterz@...radead.org>
Cc: cgroups@...r.kernel.org, linux-kernel@...r.kernel.org, 
	Ingo Molnar <mingo@...hat.com>, Juri Lelli <juri.lelli@...hat.com>, 
	Vincent Guittot <vincent.guittot@...aro.org>, Dietmar Eggemann <dietmar.eggemann@....com>, 
	Steven Rostedt <rostedt@...dmis.org>, Ben Segall <bsegall@...gle.com>, Mel Gorman <mgorman@...e.de>, 
	Valentin Schneider <vschneid@...hat.com>, Frederic Weisbecker <fweisbecker@...e.com>
Subject: Re: [PATCH v2 06/10] sched: Bypass bandwitdh checks with runtime
 disabled RT_GROUP_SCHED

On Wed, Apr 02, 2025 at 02:02:21PM +0200, Peter Zijlstra <peterz@...radead.org> wrote:
> Can we make it so that cgroup-v2 is explicitly disallowed for now? As I
> said earlier, we're looking at a new implemention with a incompatible
> interface.

I meant here that
- rt_group_sched=0 -> cgroup v2 works but there's no RT group scheduling
- rt_group_sched=1 -> cgroup v2 doesn't work (prohibit RT tasks in
                      non-root groups)

I.e. there is no new function for cgroup v2 besides that it is possible
to switch to RT group scheduling (with v1) without recompiling the
kernel.

Michal

Download attachment "signature.asc" of type "application/pgp-signature" (229 bytes)

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ