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c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1793963077; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=9O2vKxr3vIPnGovxy920EtF3PDuvoKhJLdNO+mkZXkw=; b=44LMbXC1z2hogBrAf+RVFd6f+/6xUuu+52pujs91eMqtr4+g3rwmjiLKqYUHbF9xbQlsx1 G9NxWbV/oOTGLHBA== From: Sebastian Andrzej Siewior To: Peter Zijlstra Cc: Tejun Heo , linux-rt-devel@lists.linux.dev, cgroups@vger.kernel.org, linux-kernel@vger.kernel.org, Ingo Molnar , Juri Lelli , Vincent Guittot , Dietmar Eggemann , Steven Rostedt , K Prateek Nayak , Johannes Weiner , Michal =?utf-8?Q?Koutn=C3=BD?= , John Ogness , Shrikanth Hegde , luca abeni , Yuri Andriaccio , Yuri Andriaccio Subject: Re: [PATCH] sched: Remove CONFIG_RT_GROUP_SCHED Message-ID: <20261106110435.5MWA_4Hw@linutronix.de> References: <20261105164724.yxONBd03@linutronix.de> <20261105193010.tXUDDu2w@linutronix.de> <20261106105003.GU1813469@noisy.programming.kicks-ass.net> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20261106105003.GU1813469@noisy.programming.kicks-ass.net> On 2026-11-06 11:50:03 [+0100], Peter Zijlstra wrote: > On Thu, Nov 05, 2026 at 08:30:10PM +0100, Sebastian Andrzej Siewior wrote: > > On 2026-11-05 07:19:27 [-1000], Tejun Heo wrote: > > > Hello, Sebastian. > > Hi Tejun, > > > > > > > > I'm not against it but wonder whether it'd be useful to do it more gradually > > > so that people can pipe up if they depend on it. ie. Mark it deprecated and > > > put it behind EXPORT for a bit and then BROKEN before actual removal. > > > > I would be surprised if this is actually used especially since it is > > cg-v1 and v2 is the default/ used by everyone (?). > > So I would love to actually delete this. But IIRC there were actually > people who used it. That would mean that it is working which does surprise me. > But yes, we need to replace this with that other thing. so no removal, keeping this thing that nobody can use? You don't give your love a chance? The plan is to make HCBS appear as CONFIG_RT_GROUP_SCHED or do I mix up things? Sebastian