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 1B2B4C5519F for ; Fri, 20 Nov 2020 11:50:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 74D3B22255 for ; Fri, 20 Nov 2020 11:50:53 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="HIHA92Zg" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727846AbgKTLu3 (ORCPT ); Fri, 20 Nov 2020 06:50:29 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35694 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727392AbgKTLu2 (ORCPT ); Fri, 20 Nov 2020 06:50:28 -0500 Received: from merlin.infradead.org (merlin.infradead.org [IPv6:2001:8b0:10b:1231::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 417B8C0613CF for ; Fri, 20 Nov 2020 03:50:28 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=merlin.20170209; h=Subject:Cc:To:From:Date:Message-ID: Sender:Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding: Content-ID:Content-Description:In-Reply-To:References; bh=zI+nc36ErlTWClwueAha1W2gAtMlhwLJWOY1BMsravM=; b=HIHA92ZgX3OpfRzsmpEGGTtZHA MFiFkjwnrqZ7I4CvGivth3BikCapiwbdFWAEcDVCdPXrUnGqu+q+HqhcS6CBkeKTpFCpkUTHuhRnB TXhk6CTmxZB7XkMJxzwSP03rsML0qJILQKoV+GTSygN3cKpcJVaSUB5EOu08shMdUmkIdkPIAxHhU XEmzNRpj6NnBh/pDrgj5f+kOIrz2OgxjwtpQvt1F60KUsvJKs+v1tEy/B0A5R0J+3tTVo3ggDnGsF mSoxvu60OaiAXTqXjYKY5BZAbNwX7ae4cNMmqMeH18SL0/xAGyVbSKsDgKYpMblMfr7uMILpd2GSk gUgLzs/Q==; 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 1kg4vl-0003xA-VL; Fri, 20 Nov 2020 11:50:22 +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 0AE5430782A; Fri, 20 Nov 2020 12:50:19 +0100 (CET) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 0) id E32EC2B06A142; Fri, 20 Nov 2020 12:50:19 +0100 (CET) Message-ID: <20201120114145.197714127@infradead.org> User-Agent: quilt/0.66 Date: Fri, 20 Nov 2020 12:41:45 +0100 From: Peter Zijlstra To: rafael@kernel.org, viresh.kumar@linaro.org, mingo@kernel.org Cc: x86@kernel.org, mark.rutland@arm.com, will@kernel.org, svens@linux.ibm.com, linux-kernel@vger.kernel.org, peterz@infradead.org Subject: [PATCH 0/2] More RCU vs idle fixes Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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.