From patchwork Fri Mar 17 15:15:04 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Waiman Long X-Patchwork-Id: 13179201 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 D797CC7618E for ; Fri, 17 Mar 2023 15:16:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231808AbjCQPQv (ORCPT ); Fri, 17 Mar 2023 11:16:51 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44112 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230273AbjCQPQm (ORCPT ); Fri, 17 Mar 2023 11:16:42 -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 AABBF4D626 for ; Fri, 17 Mar 2023 08:15:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1679066135; 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=q7V46Q52rkSh11P7uwpvJlomEOhaWhBzxdnEpXedVNs=; b=Obe8WIAeMyZ+uyXIXL5lNqKdAyznM23sampzKQ8IBvKPKqUGbgjEnE+DQlUlM8slU95ZZx Xi7ZpzGGVMMwWWe3jsDBpfSuWSVwfwIdnKZgkUDuY6CLWCU0LnH8uUnCv5UC1V71NVioP1 mWDfQUvzegRxiTwHFk7bxVtFUF/yqd0= Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-657-W1yAmKFMMy2wcEDHNLbwnw-1; Fri, 17 Mar 2023 11:15:30 -0400 X-MC-Unique: W1yAmKFMMy2wcEDHNLbwnw-1 Received: from smtp.corp.redhat.com (int-mx09.intmail.prod.int.rdu2.redhat.com [10.11.54.9]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 7683C29AA2E3; Fri, 17 Mar 2023 15:15:29 +0000 (UTC) Received: from llong.com (unknown [10.22.10.238]) by smtp.corp.redhat.com (Postfix) with ESMTP id BBEE7492B00; Fri, 17 Mar 2023 15:15:28 +0000 (UTC) From: Waiman Long To: Tejun Heo , Zefan Li , Johannes Weiner , Shuah Khan Cc: cgroups@vger.kernel.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, Will Deacon , Peter Zijlstra , =?utf-8?q?Michal_Koutn=C3=BD?= , Juri Lelli , Waiman Long Subject: [PATCH v2 0/4] cgroup/cpuset: Miscellaneous updates Date: Fri, 17 Mar 2023 11:15:04 -0400 Message-Id: <20230317151508.1225282-1-longman@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.9 Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org v2: - Add a new patch 1 that fixes a bug introduced by recent v6.2 commit 7a2127e66a00 ("cpuset: Call set_cpus_allowed_ptr() with appropriate mask for task"). - Make a small twist and additional comment to patch 2 ("cgroup/cpuset: Skip task update if hotplug doesn't affect current cpuset") as suggested by Michal. - Remove v1 patches 3/4 for now for further discussion. This patch series includes miscellaneous update to the cpuset and its testing code. Patch 1 fixes a bug caused by commit 7a2127e66a00 ("cpuset: Call set_cpus_allowed_ptr() with appropriate mask for task") in the partition handling code. This fix was verified by running the test_cpuset_prs.sh test. Patch 2 is for a hotplug optimization. Patch 3 is actually a follow-up of commit 3fb906e7fabb ("cgroup/cpuset: Don't filter offline CPUs in cpuset_cpus_allowed() for top cpuset tasks"). Patch 4 reduces verbosity when running test_cpuset_prs.sh test script unless explicitly enabled with the -v option. Waiman Long (4): cgroup/cpuset: Fix partition root's cpuset.cpus update bug cgroup/cpuset: Skip task update if hotplug doesn't affect current cpuset cgroup/cpuset: Include offline CPUs when tasks' cpumasks in top_cpuset are updated cgroup/cpuset: Minor updates to test_cpuset_prs.sh kernel/cgroup/cpuset.c | 38 +++++++++++++------ .../selftests/cgroup/test_cpuset_prs.sh | 25 ++++++------ 2 files changed, 41 insertions(+), 22 deletions(-)