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,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 999A8C6379D for ; Tue, 24 Nov 2020 14:23:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 22B3B2083E for ; Tue, 24 Nov 2020 14:23:30 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="RgNIne4l" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388874AbgKXOXN (ORCPT ); Tue, 24 Nov 2020 09:23:13 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42140 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731656AbgKXOXM (ORCPT ); Tue, 24 Nov 2020 09:23:12 -0500 Received: from merlin.infradead.org (merlin.infradead.org [IPv6:2001:8b0:10b:1231::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5927FC0617A6 for ; Tue, 24 Nov 2020 06:23:12 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=merlin.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=+Y3Hzccj3kNWKA+Fq9a4rpUhCDRfohJChJu1uJl6Seg=; b=RgNIne4l9wuC60z2fu3qXgNqcH FZTMUCHC3N8oCnMaprN0X5+4we+QC23CMXd3MOKrSiHoKcqLDHpv4xiMPJs3bQFTxi3id1lSa8lJb S9b0M0WR8m3guGciSqOEV+XplQ22XPtjedPg8KKvIFpo+QohoqOVJsKvf4j0qW6ClNeL06avn+emy rkI/gz16MZPgG1x/H5gCY+nxejQ/TFKta8db2s3dgv9d97V/hPmQ8klaxtsQNBKqrPHVh2h8vmEEK aW820X/AQWl+yj7y8AbFFz33PkekoEUgu7FsY3z2xxAekvZofjhZNUJTxnrLt2GZziejnx0ZBBQYX yyJ0g4fQ==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=noisy.programming.kicks-ass.net) by merlin.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1khZDk-00072H-Pt; Tue, 24 Nov 2020 14:23:04 +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 9CA41306E56; Tue, 24 Nov 2020 15:23:03 +0100 (CET) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id 5E3CD20222D7E; Tue, 24 Nov 2020 15:23:03 +0100 (CET) Date: Tue, 24 Nov 2020 15:23:03 +0100 From: Peter Zijlstra To: Sven Schnelle Cc: rafael@kernel.org, viresh.kumar@linaro.org, mingo@kernel.org, x86@kernel.org, mark.rutland@arm.com, will@kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 0/2] More RCU vs idle fixes Message-ID: <20201124142303.GF3092@hirez.programming.kicks-ass.net> References: <20201120114145.197714127@infradead.org> <20201124141853.GG2414@hirez.programming.kicks-ass.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20201124141853.GG2414@hirez.programming.kicks-ass.net> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Nov 24, 2020 at 03:18:53PM +0100, Peter Zijlstra wrote: > On Tue, Nov 24, 2020 at 02:47:27PM +0100, Sven Schnelle wrote: > > Peter Zijlstra writes: > > > > > Both arm64 and s390 are tripping over arch_cpu_idle() RCU,tracing,lockdep > > > interaction. While looking at that I also found fail in inte_idle. > > > > > > Please consider for this cycle. > > > > Is anyone taking this patchset? > > I think I'll stuff it in x86/urgent for lack of a better place. Ah, locking/urgent might be a better place I suppose.