From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) (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 686F64E3779; Tue, 21 Jul 2026 15:21:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=193.142.43.55 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784647280; cv=none; b=Mfo085Lr99siWymOzqkjlWBgUg33aehVv+LsZ8S3ijQCvRiN0fPgXbP/Bg7oA31HZg/F8Z4kb/6YmjaBWrp5UG0swEhi45DApduptLkU6vSHzX6L0h8YqRm8bLvwMoxPXPLyW1C10//6KASJ7TXcOs4DIf392Y5QUkq0Qt2wDpo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784647280; c=relaxed/simple; bh=Rn9T1Ij/p7WDJ7MNxLok4k8E+5Zh/8lMCXsIlnSdfUk=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=HFalQKYM8ulWeEZoYxBFhxwiYcOlmAsEGxaNUaZEpXxx/yompqu8oRjEEki+Wfy6jAwlHlfti5QnTltYnkfo6ZobXtOj3gUrrPcXztC01l8hLugV9FGwAhfzJGHrdZNqKA+JMKntOmZLOKZyEfQG0bzOFBBpEG64M72MhWM0KZ8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de; spf=pass smtp.mailfrom=linutronix.de; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=z7QJnGP6; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=1dJ3HDFS; arc=none smtp.client-ip=193.142.43.55 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linutronix.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="z7QJnGP6"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="1dJ3HDFS" Date: Tue, 21 Jul 2026 17:21:14 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1784647276; 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=r8Bb8jYj0RhS9Rf+pd9pfpTHkr9/nkvB/xMMYo+RrpQ=; b=z7QJnGP6pxAWrNGwLtFJCAyJrlfcD4b71sEcJi7hbBfqvW2JVFnXuKYJxQAMGUow1n0M9y LGzjHllFLXlpm/tdWynU0AX8gwL9yYJZObWumN7DzDiRPcRqulFQlc2fF71b7TR1eduHXg eIzyul9BcZsV92rVy3RXJtW3dMse+VF38loDiJcsPhcSqreJQtih+J/DwKQQu449RSNtVy CVaRXpSlWB1hZYXUB/Xt7D5GvPEBjTMFmdzjsy+7a3Q84ss5DHaIUcANvnSp0b8aLqM1tJ jwnSonCWl9NmbUrLh+1rAYNiOZDKf10pm7LOVQa7UlsfTsO9ecRnW+Qt15zyOw== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1784647276; 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=r8Bb8jYj0RhS9Rf+pd9pfpTHkr9/nkvB/xMMYo+RrpQ=; b=1dJ3HDFS7rSj5wJnfjUHsA2BHtsK4tm2Mq8g3/3eGFaG0uGISgZvLw8IHrwsRVrtPwHsUw rX8uKNLu8d6xshAQ== From: Sebastian Andrzej Siewior To: Steven Rostedt Cc: John Ogness , "Ahmed S. Darwish" , Jonathan Corbet , Clark Williams , linux-rt-devel@lists.linux.dev, Matthew Wilcox , Derek Barbosa , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v4 1/1] Documentation: real-time: Add kernel configuration guide Message-ID: <20260721152114.wTED4bR5@linutronix.de> References: <20260716195716.256025-1-darwi@linutronix.de> <20260716195716.256025-2-darwi@linutronix.de> <20260721130248.ndwsFtHE@linutronix.de> <874ihs5s4d.fsf@jogness.linutronix.de> <20260721143606.NqT15H0p@linutronix.de> <20260721104806.64afcd8f@gandalf.local.home> Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20260721104806.64afcd8f@gandalf.local.home> On 2026-07-21 10:48:06 [-0400], Steven Rostedt wrote: > On Tue, 21 Jul 2026 16:36:06 +0200 > Sebastian Andrzej Siewior wrote: > > > > Unfortunately, debugfs is needed to configure the fair deadline server: > > > > > > /sys/kernel/debug/sched/fair_server/cpu*/runtime > > > > So drop the reference to it. It is not "bad" to have it enabled. It is > > I believe that some distros feel that it is bad to enable because there's > no real auditing of its interface. Although, it is now only accessible by > root. Yeah. Either way, there shouldn't be anything real-time specific that requires the user have it enabled or disabled. > -- Steve Sebastian