From mboxrd@z Thu Jan 1 00:00:00 1970 From: Waiman Long Subject: [PATCH v4 0/5] cgroup/cpuset: Fix CLONE_INTO_CGROUP problem & other issues Date: Tue, 11 Apr 2023 09:35:56 -0400 Message-ID: <20230411133601.2969636-1-longman@redhat.com> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Return-path: DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1681220182; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=0AGalK6TkETefuR8vqn2ZgXGP9Ke/hGkmxhOP0sbpu8=; b=GCaV4vKC7lpUtrB+yF7L2tJ9iJ4YXq71L06EhqtFwXbJrqXMiEyYd+SOEw0s3KdpuvP8IX nade9prE8hWDc/Bf/XOA5rLqtE07ieQ9kYHG8Hrl6ZCt9xP5ut6kPRQaMqyzld0/BdxHhY FbgHCI0hf1GS/v2r6nXaP6NlnO8zKG4= List-ID: Content-Type: text/plain; charset="us-ascii" To: Tejun Heo , Zefan Li , Johannes Weiner , Christian Brauner Cc: cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Juri Lelli , Dietmar Eggemann , =?UTF-8?q?Michal=20Koutn=C3=BD?= , Giuseppe Scrivano , Waiman Long v4: - Add missing rcu_read_lock/unlock to cpuset_cancel_fork() in patch 3. - Add patch 5 to reduce performance impact for the non-CLONE_INTO_CGROUP case. v3: - Update patches 2 & 3 to put task_cs() call under rcu_read_lock(). v2: - Drop v1 patch 3 - Add a new patch to fix an issue in cpuset_cancel_attach() and another patch to add cpuset_can_fork() and cpuset_cacnel_fork() methods. The first patch in this series fixes a problem in cpuset_cancel_attach(). Patches 2 and 3 fixes the CLONE_INTO_CGROUP problem in cpuset. Patch 4 is a minor fix. The last patch is a performance optimization patch for the non-CLONE_INTO_CGROUP case. Waiman Long (5): cgroup/cpuset: Wake up cpuset_attach_wq tasks in cpuset_cancel_attach() cgroup/cpuset: Make cpuset_fork() handle CLONE_INTO_CGROUP properly cgroup/cpuset: Add cpuset_can_fork() and cpuset_cancel_fork() methods cgroup/cpuset: Make cpuset_attach_task() skip subpartitions CPUs for top_cpuset cgroup/cpuset: Optimize out unneeded cpuset_can_fork/cpuset_cancel_fork calls include/linux/cgroup-defs.h | 6 ++ kernel/cgroup/cgroup.c | 23 +++-- kernel/cgroup/cpuset.c | 167 +++++++++++++++++++++++++++++------- 3 files changed, 159 insertions(+), 37 deletions(-) -- 2.31.1 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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id AF7B9C76196 for ; Tue, 11 Apr 2023 13:37:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229639AbjDKNhI (ORCPT ); Tue, 11 Apr 2023 09:37:08 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46420 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229571AbjDKNhF (ORCPT ); Tue, 11 Apr 2023 09:37:05 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C938D30FE for ; Tue, 11 Apr 2023 06:36:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1681220182; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=0AGalK6TkETefuR8vqn2ZgXGP9Ke/hGkmxhOP0sbpu8=; b=GCaV4vKC7lpUtrB+yF7L2tJ9iJ4YXq71L06EhqtFwXbJrqXMiEyYd+SOEw0s3KdpuvP8IX nade9prE8hWDc/Bf/XOA5rLqtE07ieQ9kYHG8Hrl6ZCt9xP5ut6kPRQaMqyzld0/BdxHhY FbgHCI0hf1GS/v2r6nXaP6NlnO8zKG4= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-517-CV3BEFLoNY-TGqZlnAEKpA-1; Tue, 11 Apr 2023 09:36:18 -0400 X-MC-Unique: CV3BEFLoNY-TGqZlnAEKpA-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id F31588018AC; Tue, 11 Apr 2023 13:36:17 +0000 (UTC) Received: from llong.com (unknown [10.22.33.155]) by smtp.corp.redhat.com (Postfix) with ESMTP id 3E92F47CE1; Tue, 11 Apr 2023 13:36:17 +0000 (UTC) From: Waiman Long To: Tejun Heo , Zefan Li , Johannes Weiner , Christian Brauner Cc: cgroups@vger.kernel.org, linux-kernel@vger.kernel.org, Juri Lelli , Dietmar Eggemann , =?UTF-8?q?Michal=20Koutn=C3=BD?= , Giuseppe Scrivano , Waiman Long Subject: [PATCH v4 0/5] cgroup/cpuset: Fix CLONE_INTO_CGROUP problem & other issues Date: Tue, 11 Apr 2023 09:35:56 -0400 Message-Id: <20230411133601.2969636-1-longman@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.1 on 10.11.54.5 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org v4: - Add missing rcu_read_lock/unlock to cpuset_cancel_fork() in patch 3. - Add patch 5 to reduce performance impact for the non-CLONE_INTO_CGROUP case. v3: - Update patches 2 & 3 to put task_cs() call under rcu_read_lock(). v2: - Drop v1 patch 3 - Add a new patch to fix an issue in cpuset_cancel_attach() and another patch to add cpuset_can_fork() and cpuset_cacnel_fork() methods. The first patch in this series fixes a problem in cpuset_cancel_attach(). Patches 2 and 3 fixes the CLONE_INTO_CGROUP problem in cpuset. Patch 4 is a minor fix. The last patch is a performance optimization patch for the non-CLONE_INTO_CGROUP case. Waiman Long (5): cgroup/cpuset: Wake up cpuset_attach_wq tasks in cpuset_cancel_attach() cgroup/cpuset: Make cpuset_fork() handle CLONE_INTO_CGROUP properly cgroup/cpuset: Add cpuset_can_fork() and cpuset_cancel_fork() methods cgroup/cpuset: Make cpuset_attach_task() skip subpartitions CPUs for top_cpuset cgroup/cpuset: Optimize out unneeded cpuset_can_fork/cpuset_cancel_fork calls include/linux/cgroup-defs.h | 6 ++ kernel/cgroup/cgroup.c | 23 +++-- kernel/cgroup/cpuset.c | 167 +++++++++++++++++++++++++++++------- 3 files changed, 159 insertions(+), 37 deletions(-) -- 2.31.1