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=-3.8 required=3.0 tests=BAYES_00, 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 CE94FC433E0 for ; Thu, 4 Feb 2021 07:01:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8B94464D9E for ; Thu, 4 Feb 2021 07:01:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233043AbhBDHBJ (ORCPT ); Thu, 4 Feb 2021 02:01:09 -0500 Received: from muru.com ([72.249.23.125]:56986 "EHLO muru.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229998AbhBDHBG (ORCPT ); Thu, 4 Feb 2021 02:01:06 -0500 Received: from atomide.com (localhost [127.0.0.1]) by muru.com (Postfix) with ESMTPS id 12F3D80C5; Thu, 4 Feb 2021 07:00:36 +0000 (UTC) Date: Thu, 4 Feb 2021 09:00:21 +0200 From: Tony Lindgren To: Grygorii Strashko Cc: Lokesh Vutla , Nishanth Menon , linux-kernel@vger.kernel.org, Carl-Oscar Varnander , linux-omap@vger.kernel.org Subject: Re: [PATCH] bus: omap_l3_noc: mark l3 irqs as IRQF_NO_THREAD Message-ID: References: <20210128191548.4376-1-grygorii.strashko@ti.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210128191548.4376-1-grygorii.strashko@ti.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Grygorii Strashko [210128 21:16]: > The main purpose of l3 IRQs is to catch OCP bus access errors and identify > corresponding code places by showing call stack, so it's important to > handle L3 interconnect errors as fast as possible. On RT these IRQs will > became threaded and will be scheduled mach more late from the moment actual > error occurred so showing completely useless information. > > Hence, mark l3 IRQs as IRQF_NO_THREAD so they will not be forced threaded > on RT or if force_irqthreads = true. > > Fixes: 0ee7261c9212 ("drivers: bus: Move the OMAP interconnect driver to drivers/bus/") Thanks applying into fixes. Tony