From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 19E0B48167F for ; Tue, 5 May 2026 15:01:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=90.155.92.199 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777993314; cv=none; b=iEb4iSwoE+xIPtiy9HeZPelEq9x5TkVTktuN6EHwiHs2ZUO+K7iJxNK+zpeUu5hWxjGx9ES9VETJYUwd+E47Zx8qElRPwgORj2m7kEl+9YjzHMrODlznus5U/L8eu42kEFzIiAQJE/+RUlGkjXKZmd6roQG9ukvawcOlvb/kV6M= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777993314; c=relaxed/simple; bh=ahRLt6XRX/jsMA71FkFsjlfxpT5wV0yHz5Ta/tkPBUY=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=cDw393W3NmBVf7VmIa17q2O8pLuvD3QrS3qieex2ZyEOnGpQv0Kc29iuTlcNUR0ersGFUEY1tbpdBphacEIrwAXjnh+pJZJDkaw+SeytjwvFsMiXPtj5yaGcbp2++2WOWDgTRt8mDfUbYVKjFVBE8Xt3SoBji1Dtqpx4FYssfuY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=infradead.org; spf=none smtp.mailfrom=infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=o4zD1xp6; arc=none smtp.client-ip=90.155.92.199 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=infradead.org Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="o4zD1xp6" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=udWxX+GmRBf4i+w3IKJqcSqJgjgeZJVVZh0+PRl/7a8=; b=o4zD1xp6CnKUEjExiAnY6C4NtY ScpLXO59SDi0HOqpMOAcs1zHPVMh1CiE2T4V/AGtK1WeDFalXMdnYxHDeKZTenXKpq/1RImt6KU0J UaTf7vFD0dzgI5yE0l3w+NY/D6oAzQSF7KTkcKs2OKm6NuRuvc46+eNLL59ZPAVHu8b+Z3XRYrdNC YQW+BSkMWtNQPtiY1i+pjkzRKQuCjmMfmCX1FPO1mvpbB2yN4azIpr8tE588RJ74UywZCuvRJZO+3 YmPYYbJCBgxq7468ug8Ha/2sE2FN5jFOYb7FWVjOzdgf7QYR7NVWo5yXM+9SREQiX/cSm1IlFPhdn 6XgdLsfQ==; Received: from 2001-1c00-8d85-4b00-266e-96ff-fe07-7dcc.cable.dynamic.v6.ziggo.nl ([2001:1c00:8d85:4b00:266e:96ff:fe07:7dcc] helo=noisy.programming.kicks-ass.net) by desiato.infradead.org with esmtpsa (Exim 4.98.2 #2 (Red Hat Linux)) id 1wKHHN-0000000DpSm-042O; Tue, 05 May 2026 15:01:45 +0000 Received: by noisy.programming.kicks-ass.net (Postfix, from userid 1000) id 693B2300324; Tue, 05 May 2026 17:01:44 +0200 (CEST) Date: Tue, 5 May 2026 17:01:44 +0200 From: Peter Zijlstra To: Yuri Andriaccio Cc: Ingo Molnar , Juri Lelli , Vincent Guittot , Dietmar Eggemann , Steven Rostedt , Ben Segall , Mel Gorman , Valentin Schneider , linux-kernel@vger.kernel.org, Luca Abeni , Yuri Andriaccio Subject: Re: [RFC PATCH v5 19/29] sched/rt: Remove support for cgroups-v1 Message-ID: <20260505150144.GE3102624@noisy.programming.kicks-ass.net> References: <20260430213835.62217-1-yurand2000@gmail.com> <20260430213835.62217-20-yurand2000@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260430213835.62217-20-yurand2000@gmail.com> On Thu, Apr 30, 2026 at 11:38:23PM +0200, Yuri Andriaccio wrote: > Disable control files for cgroups-v1, and allow only cgroups-v2. > This should simplify maintaining the code, since cgroups-v1 are deprecated. So while I love seeing all this code go away; I very much doubt we can pull this off. People might actually be using this. I think at best we can hide the whole cgroup-v1 thing behind a CONFIG and eventually remove once no distro is left using it or something like that :/