Received: by 2002:a05:6a10:c604:0:0:0:0 with SMTP id y4csp349050pxt; Wed, 4 Aug 2021 12:49:47 -0700 (PDT) X-Google-Smtp-Source: ABdhPJz/B3hNPe9a3JQqWuH2/xrvjSMb5I/z+bTl6TjqxeCRfEG5pZVuf39a55ubsXVkhu189xLK X-Received: by 2002:a92:c54d:: with SMTP id a13mr903854ilj.74.1628106587320; Wed, 04 Aug 2021 12:49:47 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1628106587; cv=none; d=google.com; s=arc-20160816; b=eaKfWTWoR0osO08RYEw3OilL/kTx0XXtjsSBAJuSKR+t8O4l6ZlC8GqQOoxGOArv4P CrBkMCiq1Z5ptoAHPsn+KDfw5yp2KlJ+lMQFBGzD1V3bN8bbwVlM1Vhx4HnZJOVjLWdM EhHawMInLspU1QvI3uxSfT5bPNDl6S89zR/DshWT9UCDIVW/oAi/oGd3q5DK3Vhqq49D hUrHITo92vJ/VPzU3zyIK7//QgpgrU6tRPPSHMHQiKX2rbLXQCnqOMjKlK/NiRLZmwkO KyDOOS5d37zx0esbKhQKxnomrbnYQ+IE2F1UYf7X84JFjF9XTbXdLfpJrpurl7sHnp7u QgGQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:subject:cc:to:from:date; bh=VmVBB6s/MlOF1eewWPIyJ7aeTNOHOfrnAzuVDPsD2Ms=; b=MeBe1a5EFXa8vRPVTwBdqHkfIOHyasIftTmo6ZUdq+l2x2XOYjsBwgyvN7RSPJPSy7 9R7lg8/1RmmIkrZ6fYOTquRVEEtaaQOoLlN2CU7yLa2FSswQ/LL+VIL+s5A8oR9pEr/d FvruXF+Gp4O5qGzvr+5rq+oSkb7tKbRLs4j7VL9Tc3ZP6gDMMwJYnzg5agK6yz7OEzRH fCnPi6edJEJNCiQGX7ZB8SSFwKHRlMRF5TSCVjk3HU639NN4XenGZA24BJgTfDqC+PoL Z6+wII+gAkrk25cOcDokJYPCmeaACrFQkQr29cSticjUYFQNjBkMXK/OUEox3agzEa+F u1xw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id q18si3151416ile.96.2021.08.04.12.49.32; Wed, 04 Aug 2021 12:49:47 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236868AbhHDQ0F (ORCPT + 99 others); Wed, 4 Aug 2021 12:26:05 -0400 Received: from mail.kernel.org ([198.145.29.99]:46976 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236825AbhHDQZz (ORCPT ); Wed, 4 Aug 2021 12:25:55 -0400 Received: from oasis.local.home (cpe-66-24-58-225.stny.res.rr.com [66.24.58.225]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 7A9AB60F41; Wed, 4 Aug 2021 16:25:42 +0000 (UTC) Date: Wed, 4 Aug 2021 12:25:41 -0400 From: Steven Rostedt To: Sebastian Andrzej Siewior Cc: Jens Axboe , Peter Zijlstra , Daniel Wagner , Thomas Gleixner , LKML , linux-rt-users@vger.kernel.org Subject: Re: [ANNOUNCE] v5.14-rc4-rt4 Message-ID: <20210804122541.741cf858@oasis.local.home> In-Reply-To: <20210804162231.rfj5i736lqc4nsio@linutronix.de> References: <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> <20210804121704.1587c41b@oasis.local.home> <20210804162231.rfj5i736lqc4nsio@linutronix.de> X-Mailer: Claws Mail 3.17.3 (GTK+ 2.24.33; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 4 Aug 2021 18:22:31 +0200 Sebastian Andrzej Siewior wrote: > no preemption happens here with NEED_RESCHED set. But if interrupts were disabled, how would NEED_RESCHED be set? As soon as you enable interrupts, the interrupt that sets NEED_RESCHED would trigger the preemption. -- Steve