From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5680FC432BE for ; Wed, 4 Aug 2021 15:57:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 37C6460ED6 for ; Wed, 4 Aug 2021 15:57:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239642AbhHDP6D (ORCPT ); Wed, 4 Aug 2021 11:58:03 -0400 Received: from Galois.linutronix.de ([193.142.43.55]:36740 "EHLO galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239291AbhHDP6C (ORCPT ); Wed, 4 Aug 2021 11:58:02 -0400 Date: Wed, 4 Aug 2021 17:57:47 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1628092668; 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=W0Ka5WCXvs7z/8LE8URZtq9Ty222C5WzSPRlUoQqkNY=; b=KHATt7/bumFM7H1Dp5bPJemVp613Uhui7ukuKAUzFED6PWGeoPSLdmhg5CrDnExiHyarkN GQUuuZBi7l53qHGbTMaGq0r5Uq0bDfxDaszEmV8Osq5fjI0pp9PoYFQFUCl6X6ktA/9VYs rtn6tjWnrn0qZVxg7wwUFYbReHiRdEGqkOCltwmUaJMeombqmTQ9DG+HtOdGjtr7IZblcC RmD5C/bTbrXNdP0nfv/1DRiPsOhDZWquhnY9B7CVkpKHucCBv/KEKAzP9hAXp1cn81w2Rp 3kw+p/RkTl6DW1Qkr+HXa8FeE7mEh+Pz3697EBpzFuSAfZOM60kCD0fAZw9uMg== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1628092668; 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=W0Ka5WCXvs7z/8LE8URZtq9Ty222C5WzSPRlUoQqkNY=; b=mhI6U25PdgsJYnNEO9b7dvbd5BXW+UYc4zmswcjNz7jlIGMUY2csfDyo61g1gVh9MX9KWJ O7t0UxI19WRX2pDQ== From: Sebastian Andrzej Siewior To: Jens Axboe Cc: Peter Zijlstra , Daniel Wagner , Thomas Gleixner , LKML , linux-rt-users@vger.kernel.org, Steven Rostedt Subject: Re: [ANNOUNCE] v5.14-rc4-rt4 Message-ID: <20210804155747.cwayhjsdjc4zaubd@linutronix.de> References: <20210804104340.fhdjwn3hruymu3ml@linutronix.de> <20210804104803.4nwxi74sa2vwiujd@linutronix.de> <20210804110057.chsvt7l5xpw7bo5r@linutronix.de> <20210804131731.GG8057@worktop.programming.kicks-ass.net> <4f549344-1040-c677-6a6a-53e243c5f364@kernel.dk> <20210804153308.oasahcxjmcw7vivo@linutronix.de> <20210804154743.niogqvnladdkfgi2@linutronix.de> <7c946918-ae0d-6195-6a78-b019f9bc1fd3@kernel.dk> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <7c946918-ae0d-6195-6a78-b019f9bc1fd3@kernel.dk> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2021-08-04 09:49:48 [-0600], Jens Axboe wrote: > > That'd work on non-RT as well, but it makes it worse on non-RT as well with > the irq enable/disable dance. While that's not the end of the world, would > be nice to have a solution that doesn't sacrifice anything, yet doesn't > make RT unhappy. There were plans to make local_irq_disable() mostly a nop (similar to what ppc64 does). But I have no idea what happened. I hope that work gets picked up. Sebastian