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=-5.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 1C034C63777 for ; Thu, 3 Dec 2020 13:04:44 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 88C0722259 for ; Thu, 3 Dec 2020 13:04:43 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 88C0722259 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References:Message-ID: Subject:To:From:Date:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=6uSOe3nPPAT/BYqoWQxbGwTKQ6xU3nDRry6XkEMhsws=; b=WFgMvyQ81APNbDden0nNaO9XH +0EsMsIn4s8+kBPU1OE8FnL8EbbZ9h/358uEWaisYPR57L2vlaXdbk7cqLDpH8K4A4ulTNmyHYkqI wDwp65jZSfFZDq/9EkjLX8XZCV05bi4w/1llvxEmWUcqh/11aTxFDfkAMOdq/jdyfXoDBkQwoNZ6B OLRSy7UDt0aZHiSL4a6Nl25Cl7DuKqUNMxpk2WMeawicdIjcuNzvpEKZnF49T+LvuGNMwSmB7lPAm uloKCCu2HP0ueVQG8aztDlbruvD3xt8zjBY3O3yumpTqFJIDLbkNN0xIf2sDJ2vzXxUqAyh2OjZAt S2e5H5Sxw==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kkoGc-0007WO-0v; Thu, 03 Dec 2020 13:03:26 +0000 Received: from casper.infradead.org ([2001:8b0:10b:1236::1]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kkoGa-0007W9-15 for linux-arm-kernel@merlin.infradead.org; Thu, 03 Dec 2020 13:03:24 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; 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=0nzBJOGip3OPorIjBIZGgUMsAydpfmGWWw72qte5Nr0=; b=FJi/3EXxP0Rhe1muyFSQFtnLVX B3cfQPpMz7Z7e3YmSl5pZvxFVCy0WiWNQoT7181zali2AtQJBwOj6Nc9TZ3eR+ZueJDB7+Co84K18 o163sC78XIA8AQQeA+JUOPWsDRx4SxIUwc35GSeCFnXPO74DOzAmJoRy7ojnqBIRQ2YZI/Sdc+Lyt mfh3Ki6MshGENUZCmEmquJCdoruXoeYT+WlxDCxR8kjzn5zHFGYlfYWnCE5E43OIs7FyjV/zGPd1H VlJNnH53UIAngq/olxaoteo+MXqyx1EjT1VdmPHZPYImRTs3QJXRdPyROfaoRjdKIMLGYfcSby/gZ YEJEd8tA==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=noisy.programming.kicks-ass.net) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1kkoGY-0000ru-0K; Thu, 03 Dec 2020 13:03:22 +0000 Received: from hirez.programming.kicks-ass.net (hirez.programming.kicks-ass.net [192.168.1.225]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by noisy.programming.kicks-ass.net (Postfix) with ESMTPS id 271CC3059DD; Thu, 3 Dec 2020 14:03:21 +0100 (CET) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id 04B01200EC4EA; Thu, 3 Dec 2020 14:03:21 +0100 (CET) Date: Thu, 3 Dec 2020 14:03:20 +0100 From: Peter Zijlstra To: Valentin Schneider Subject: Re: [PATCH v2 2/6] genirq: Allow an interrupt to be marked as 'raw' Message-ID: <20201203130320.GQ3021@hirez.programming.kicks-ass.net> References: <20201124141449.572446-1-maz@kernel.org> <20201124141449.572446-3-maz@kernel.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , Android Kernel Team , Russell King , Marc Zyngier , linux-kernel , Catalin Marinas , Thomas Gleixner , Will Deacon , LAK Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Thu, Nov 26, 2020 at 06:18:33PM +0000, Valentin Schneider wrote: > If I got the RCU bits right from what Thomas mentioned in > > https://lore.kernel.org/r/87ft5q18qs.fsf@nanos.tec.linutronix.de > https://lore.kernel.org/r/87lfewnmdz.fsf@nanos.tec.linutronix.de > > then we're still missing something to notify RCU in the case the IRQ hits > the idle task. All I see on our entry path is > > trace_hardirqs_off(); > ... > irq_handler() > handle_domain_irq(); > ... > trace_hardirqs_on(); > > so we do currently rely on handle_domain_irq()'s irq_enter() + irq_exit() > for that. rcu_irq_enter() says CONFIG_RCU_EQS_DEBUG=y can detect missing > bits, but I don't get any warnings with your series on my Juno. The scheduler IPI really doesn't need RCU either ;-) _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel