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[2620:137:e000::1:20]) by mx.google.com with ESMTP id w67-20020a626246000000b005e7509bfeaasi457396pfb.297.2023.02.24.09.03.41; Fri, 24 Feb 2023 09:04:01 -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=TkEdBD95; 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 S230029AbjBXQuQ (ORCPT + 99 others); Fri, 24 Feb 2023 11:50:16 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49946 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230022AbjBXQuP (ORCPT ); Fri, 24 Feb 2023 11:50:15 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 126F352DFD; Fri, 24 Feb 2023 08:50:14 -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 A21576193E; Fri, 24 Feb 2023 16:50:13 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 839F4C433D2; Fri, 24 Feb 2023 16:50:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1677257413; bh=/eJtNjckHnQFplB3Qoe3dNHpdJc/ipL91nL41jMQZiw=; h=From:To:Cc:Subject:Date:From; b=TkEdBD95c8810I1jH9ym2fsI8woI1k7zAGhetcRLfUiUz5/urjNGtQY7+mcs17gVJ v175HRfzKCk3/ybFcUewEoYHR5UN3ZwmRBnm2mBkdgIsQyGv1rX5lNYkX8v1Y/PNrd j7+4E0mgjVIheduAok9GVwP8IeoXOU2M0HHoixW/ipITKsKBKysuI27E7ZcgEOa0Gv Z1TizjRxg/tSTMSG3GeunMXcEPSNYPLDNzz7M0IU5TVSRpy+N47B8n1m7vRKYm+SS7 oISnGG6yFXpZc+Gs9+EOGBnUTSdCkNHiWGHuTv3jozWhG4zin04O+xhqL/gDPPwrU6 W6KdxeFz8oKpQ== 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 v3 0/3] livepatch,sched: Add livepatch task switching to cond_resched() Date: Fri, 24 Feb 2023 08:49:58 -0800 Message-Id: X-Mailer: git-send-email 2.39.1 MIME-Version: 1.0 Content-type: text/plain X-Spam-Status: No, score=-7.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_HI, 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?1758732698365537997?= X-GMAIL-MSGID: =?utf-8?q?1758732737834855508?= v3: - Add barriers (pmladek) - Update comments 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/core.c | 1 + kernel/livepatch/transition.c | 113 +++++++++++++++++++++++++++----- kernel/sched/core.c | 64 +++++++++++++++--- 7 files changed, 200 insertions(+), 31 deletions(-) create mode 100644 include/linux/livepatch_sched.h Acked-by: Miroslav Benes