From patchwork Fri Feb 17 22:22:53 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Josh Poimboeuf X-Patchwork-Id: 5581 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:adf:eb09:0:0:0:0:0 with SMTP id s9csp99269wrn; Fri, 17 Feb 2023 14:30:50 -0800 (PST) X-Google-Smtp-Source: AK7set/Wjyyuvmgew8rjhROdLmLlczdH5CInEh9tQduylZOd6OlgZ8DHg6OEEdGsB3SVaL2fssIE X-Received: by 2002:aa7:d395:0:b0:4ab:c411:8ac5 with SMTP id x21-20020aa7d395000000b004abc4118ac5mr1775048edq.17.1676673049839; Fri, 17 Feb 2023 14:30:49 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1676673049; cv=none; d=google.com; s=arc-20160816; b=vHtv2kUhQ/KdN6xu/T8yQProVCCm9PTtTcLpJ66c+xBTiV1G1EOigAYEiZWGrWhymb aKbjSnY/EnwlEo5srV/lC+8mA1cuY+u/cdG4dYyrXuCRz/0za/PbxYF+2GKCl3C25HzH bHdggmIAbE+QI+4QY22WbOME8ofTJgO6swjXBRVBZ/2RzsIZcjYAwV2O8PH3gSZ0Vkub g4hRrQUMOLM2CfKUzBpczn8P2EqR7kkwIdMC9BsFbJZVVH+5aRJg8oxwAFj2Bwvp3xY0 FA9/YNxiP7uwJPQ/BBAdrv1MzokYgn8NkI0hh7EJ0LkVmcvzGQyPEIfAVJdKm4MhgYSu /YWA== 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=1MBnd4++k9WyrOuk7cSYrJK5iZaByQJ9elJtITXI5a0=; b=KAIRDbhnPDHsfR63YBMvvDdB44OA0/1NE1hBpHGqV1fjlXrRFiGfZOA72IKyKug7d1 haN/aiDrapgmjH/qqiqS1WoQwWjvbjANggnoHcAv5FkmEoSdcWPDq03vQLsOkSoH7I5f GUz6BxbvkKl5+rTfmHX/BXZ0vFI03sjSq9kIsBILl3Nt3U/3DPai1XDr8ry5wQB58ODc ML1F9k2yvz12/s03dPOCxwXwyQTp8TB7objYcAofls9u0116HVuEXYkLWQ2zeY1xOizK X9O8kJyDDQudr7psb2LfWXH6u5rI33WWK1qmIV2mh4IgpPKQQ1Tn1cAPTtCKE9by3WCD l3JQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=pqbwAvx9; 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 l5-20020aa7d945000000b004ace5d2cec7si7114015eds.73.2023.02.17.14.30.26; Fri, 17 Feb 2023 14:30:49 -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=pqbwAvx9; 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 S229718AbjBQWXE (ORCPT + 99 others); Fri, 17 Feb 2023 17:23:04 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51794 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229460AbjBQWXC (ORCPT ); Fri, 17 Feb 2023 17:23:02 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2B47AE066; Fri, 17 Feb 2023 14:23:01 -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 ams.source.kernel.org (Postfix) with ESMTPS id D7E51B82E67; Fri, 17 Feb 2023 22:22:59 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 27D6CC433D2; Fri, 17 Feb 2023 22:22:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1676672578; bh=soqJwxnfjFfPwqvDVA1zHd0RVwQAJ3bvumgTs5D6PTU=; h=From:To:Cc:Subject:Date:From; b=pqbwAvx9gV476BnOxI1ZPxn/BwklItTpv0TYKujlOcv2JAdENw3chZusPHpRRJNga /SKD6eRPD9Re30MqTE6SPZ2ItrZDmS6R72ismMEYaK2ZufzoCkV6wHRVcd9Z5BwqVb 4V+6fAxxmdP3j36QsIvKK0vUV4qTiehDBvpF05wuG7xMb4sa7h5vdvurxVQfypHVAe m1Jb9JTRqj93xtkrStBejWZnOUI83P3j0OX7C08GELxPyzVtZLTJ1s29sKzVHeLF24 4d+aYHXx7ai1LnsoXiM++4buo+oML9vVKr9aGzqNasVJSRe3h41mjD42hyNkXmzYk3 KU/2ZhhglgJhA== From: Josh Poimboeuf To: live-patching@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Seth Forshee , Peter Zijlstra , Song Liu , Mark Rutland , Petr Mladek , Joe Lawrence , Miroslav Benes , Jiri Kosina , Ingo Molnar , Rik van Riel Subject: [PATCH v2 0/3] livepatch,sched: Add livepatch task switching to cond_resched() Date: Fri, 17 Feb 2023 14:22:53 -0800 Message-Id: X-Mailer: git-send-email 2.39.1 MIME-Version: 1.0 Content-type: text/plain 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?1758119120101326884?= X-GMAIL-MSGID: =?utf-8?q?1758119120101326884?= v2: - Avoid calling klp_cond_resched_disable() in klp_cancel_transition() - Fix race in klp_reverse_transition() Fix patching stalls caused by busy kthreads. Josh Poimboeuf (3): livepatch: Skip task_call_func() for current task livepatch,sched: Add livepatch task switching to cond_resched() vhost: Fix livepatch timeouts in vhost_worker() drivers/vhost/vhost.c | 3 +- include/linux/livepatch.h | 1 + include/linux/livepatch_sched.h | 29 ++++++++++++ include/linux/sched.h | 20 ++++++-- kernel/livepatch/transition.c | 84 ++++++++++++++++++++++++++++----- kernel/sched/core.c | 64 +++++++++++++++++++++---- 6 files changed, 174 insertions(+), 27 deletions(-) create mode 100644 include/linux/livepatch_sched.h