From patchwork Wed Feb 22 14:46:41 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Frederic Weisbecker X-Patchwork-Id: 5739 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a5d:5915:0:0:0:0:0 with SMTP id v21csp617964wrd; Wed, 22 Feb 2023 06:51:45 -0800 (PST) X-Google-Smtp-Source: AK7set8HGudTbAjZEzqRS0QbdpZSQybo1+zVPVCNFTrJKdndsvqPrjsCir5cyMXX8aUfLbdiqGzH X-Received: by 2002:aa7:dc0c:0:b0:4af:6409:30ea with SMTP id b12-20020aa7dc0c000000b004af640930eamr1580688edu.19.1677077505278; Wed, 22 Feb 2023 06:51:45 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1677077505; cv=none; d=google.com; s=arc-20160816; b=vNB2Tr0OZ0nCn3fFwEQ0NRccVNECZV4W3lpM/6bThTlYOJh+A2wd/Y/w31svvwMOQZ Vdi/v9uDTo1O9C56r3jNJgjWNFqsgjh3ZO7fIHa2y4h0IoTbPQq3IpZRuzzOyiWbT+Tl PSbglgNWpRKDsjkBFana0L9r9Hk654oI3o+i3T4mg43FBEWpfnRrjSqfW6JpVnhdvVxq L72GfITDJ36UL46yz2r9c31qpr+sbwvSraCQwSZzHckR2Emg0eHlukfYcEEcfT9qkPNz AgIx8p8jNwkBdaa/WkIh3wga9SQMjHWEI6IxYUO702QfTbDPFHGUhDZfgzN/jV8mNsxv 2YRg== 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 :message-id:date:subject:cc:to:from:dkim-signature; bh=y1CYlbaoaKjhBqmDPU6u3taWUf9RUXpA535KOX+VHVE=; b=EmkJY658ZPr2mR3o0dcDVW9Keb/LIg3SYpHBUMaeoHgiVNbs9sx0aNSyvxxRM38ZTN waehMsseZg/qlU87nYZuE/DQoZ359glHJzZGvDhijkU2hQkHZIXq8tKCijz42TEjNkNu pz6/0CoMPJjKvpMl5HUI7YhXmzK4v+uJRqbjIt7LovZM+/AWkUASkQuS6Iarjc35dUb6 LqpuW1JVYy6h+cQ4lY03LQOMMa5c+POzX9Kf0SfdZyN07prru7T3WFobHIF/e7Gq31T5 TgkDWPYzug5c+qVCMxBH9Ou50cdzCMGWu0qpn5L5UE5BGp+cxFR9jgpSxdrRsfLmmHjk 68eQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b="A/l1QU7a"; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id by25-20020a0564021b1900b004ad08ed6815si5140489edb.403.2023.02.22.06.51.22; Wed, 22 Feb 2023 06:51:45 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b="A/l1QU7a"; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231905AbjBVOrY (ORCPT + 99 others); Wed, 22 Feb 2023 09:47:24 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59326 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231174AbjBVOrT (ORCPT ); Wed, 22 Feb 2023 09:47:19 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D869A3B65C for ; Wed, 22 Feb 2023 06:46:58 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id E4CBE61480 for ; Wed, 22 Feb 2023 14:46:56 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 394E9C433EF; Wed, 22 Feb 2023 14:46:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1677077216; bh=ZfJtndrFWcZCScshDBOMweySQa8G/TRdKVrKnsxi7mE=; h=From:To:Cc:Subject:Date:From; b=A/l1QU7asZery8BgIzMySL+Y+ue3oCTe2bQWVfG6Jgxp8DxbM4JKBmYYkCyMKITUu j5YtM1PCJb+JMbXpMcQHoxXFXYI5EhByvrx/0NBFi4lWgxLItg/IQAONlNS1ekgEe+ FoRxmVYPzLQEji9Ij33zM7Hen4TSUMJrPqIioA6RQUVc49J4GC0Uis5VEAx85Tn9le fJxtQznb8uNVafgBljCv6kRl2OHSY0Z30Kd7y3AyieQonfrg/GSrlBio+bpt/Bte5u 94+n1rQQUxyYETJifcoSrReSQND9l2ymlar429hmxl8TJqcAhfhLnrpd8m7CW1ZEyb n27iMcty6enSA== From: Frederic Weisbecker To: Thomas Gleixner Cc: LKML , Frederic Weisbecker , Alexey Dobriyan , Wei Li , Peter Zijlstra , Mirsad Goran Todorovac , Yu Liao , Hillf Danton , Ingo Molnar Subject: [PATCH 0/8] timers/nohz: Fixes and cleanups v3 Date: Wed, 22 Feb 2023 15:46:41 +0100 Message-Id: <20230222144649.624380-1-frederic@kernel.org> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1758543222187610161?= X-GMAIL-MSGID: =?utf-8?q?1758543222187610161?= Try to (partially) fix the issue reported in https://lore.kernel.org/lkml/20230128020051.2328465-1-liaoyu15@huawei.com/ Changes since v2: * Keep the monotonicity check against /proc/uptime first field * Add monotonicity test between clock_gettime(CLOCK_BOOTTIME) and /proc/uptime git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks.git timers/core-v2 HEAD: 45034144d493f62516285d7ec8bcd6408653d056 Thanks, Frederic --- Frederic Weisbecker (8): timers/nohz: Restructure and reshuffle struct tick_sched timers/nohz: Only ever update sleeptime from idle exit timers/nohz: Protect idle/iowait sleep time under seqcount timers/nohz: Add a comment about broken iowait counter update race timers/nohz: Remove middle-function __tick_nohz_idle_stop_tick() MAINTAINERS: Remove stale email address selftests/proc: Remove idle time monotonicity assertions selftests/proc: Assert clock_gettime(CLOCK_BOOTTIME) VS /proc/uptime monotonicity MAINTAINERS | 2 +- kernel/time/tick-sched.c | 135 ++++++++++++------------- kernel/time/tick-sched.h | 67 +++++++----- tools/testing/selftests/proc/proc-uptime-001.c | 25 +++-- tools/testing/selftests/proc/proc-uptime-002.c | 27 +++-- tools/testing/selftests/proc/proc-uptime.h | 28 ++--- 6 files changed, 159 insertions(+), 125 deletions(-)