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[2620:137:e000::1:20]) by mx.google.com with ESMTP id g5-20020a17090ac30500b0020a66fc1398si1663677pjt.91.2023.01.25.02.22.00; Wed, 25 Jan 2023 02:22:42 -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=@google.com header.s=20210112 header.b=KDQQgzA6; 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=REJECT sp=REJECT dis=NONE) header.from=google.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235381AbjAYKNr (ORCPT + 99 others); Wed, 25 Jan 2023 05:13:47 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52936 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235375AbjAYKNq (ORCPT ); Wed, 25 Jan 2023 05:13:46 -0500 Received: from mail-yb1-xb4a.google.com (mail-yb1-xb4a.google.com [IPv6:2607:f8b0:4864:20::b4a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C5C802E0D7 for ; Wed, 25 Jan 2023 02:13:44 -0800 (PST) Received: by mail-yb1-xb4a.google.com with SMTP id n8-20020a258d08000000b007facaf67acfso19318662ybl.0 for ; Wed, 25 Jan 2023 02:13:44 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=cc:to:from:subject:message-id:mime-version:date:from:to:cc:subject :date:message-id:reply-to; bh=nLUsTBHrrP1VhsvDJnzbuN/5sK2viyEG6W8L3lNl6Sk=; b=KDQQgzA6ROA2joiFtYVUURuaQ1Hsp1OMCTQ7RsdBogEMxTx122OSOHHe/2ladw+zv0 SzzJeyLfJS/ccz87LZGefevS6O2iblGCSEqXx7UM26cCyX9jP6MN1E2EdjwgKlZcTZMA pHCKWTG2IdJ6tKiyjC+D6ECoCoc/X1D3Gk1HNh0y4NgVmioOfI4OPHknIdtt4aNWRA9p WE5m1qE4qQkzI3s2c762i19eabLJ/P6M9ioPZBWAiGwtTFwddbbROIocPguNqdzo2G94 9Ml6Tpb+/4bnQHEZbmzYKHjsjZn+TYqS+pJT7lAh2hCaQdILQSpX9QJIQ58BM9ddCXG8 S/MQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:from:subject:message-id:mime-version:date:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=nLUsTBHrrP1VhsvDJnzbuN/5sK2viyEG6W8L3lNl6Sk=; b=haqY+npTTjDCa51buei/XvPgN+B0LcOpELt5qO0yBjSVsfpdhuc33G9FsFPOdgop3v FTto2kxJSKNeTX7xyjmYDMEsHFj8FymOiv/bWG363go50PiCPKm7feJ5dg7rcvE9WVlm AJuF7eJ/ZMiiB3r+cMyffctG4JpUIVWa+vf8X6zJPHbvBNDxUF7W6QJCH9HI9fglTDW0 3cT2z/yEZIjjczQ090Pdh6GyiT0gesqyBYu4Q26LHaKNDSeR8judvRWc+ht1hvBy5uCH ko2g4a8qCJ1yKASW2XWe0G/T1r5zvDFkxNyRgGSaM4WhnGjH/ruupVwkHWN4sXk516vh KYuw== X-Gm-Message-State: AO0yUKVn9jNx02789R6MWQgD840LhgIaWUx5BssJWyRhL9TjOOHioM6B GASDCDpxnylbcVPkSwrpnXZRaHf2VKeF2QoS/g== X-Received: from peternewman10.zrh.corp.google.com ([2a00:79e0:9d:6:e533:80e6:38fe:22c]) (user=peternewman job=sendgmr) by 2002:a25:a28e:0:b0:80b:72cc:ba35 with SMTP id c14-20020a25a28e000000b0080b72ccba35mr481251ybi.330.1674641623977; Wed, 25 Jan 2023 02:13:43 -0800 (PST) Date: Wed, 25 Jan 2023 11:13:31 +0100 Mime-Version: 1.0 X-Mailer: git-send-email 2.39.1.405.gd4c25cc71f-goog Message-ID: <20230125101334.1069060-1-peternewman@google.com> Subject: [PATCH v3 0/3] x86/resctrl: Implement rename to help move containers' tasks From: Peter Newman To: reinette.chatre@intel.com, fenghua.yu@intel.com Cc: Babu.Moger@amd.com, bp@alien8.de, dave.hansen@linux.intel.com, eranian@google.com, gupasani@google.com, hpa@zytor.com, james.morse@arm.com, linux-kernel@vger.kernel.org, mingo@redhat.com, skodak@google.com, tony.luck@intel.com, tglx@linutronix.de, x86@kernel.org, Peter Newman X-Spam-Status: No, score=-9.6 required=5.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS,USER_IN_DEF_DKIM_WL 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?1755989580331105376?= X-GMAIL-MSGID: =?utf-8?q?1755989580331105376?= Hi Reinette, Fenghua, This patch series implements the solution Reinette suggested in the earlier RFD thread[1] for the problem of moving a container's tasks to a different control group on systems that don't provide enough CLOSIDs to give every container its own control group. This patch series assumes that a MON group's CLOSID can simply be changed to that of a new parent CTRL_MON group. This is allowed on Intel and AMD, but not MPAM implementations. While we (Google) only foresee needing this functionality on Intel and AMD systems, this series should hopefully be a good starting point for supporting MPAM. Thanks! -Peter Updates: v3: use revised task CLOSID/RMID update IPI sync method from [3] v2: reworded change logs based on what I've learned from review comments in another patch series[2] [v1] https://lore.kernel.org/lkml/20221115154515.952783-1-peternewman@google.com/ [v2] https://lore.kernel.org/lkml/20221129120149.1035444-1-peternewman@google.com/ [1] https://lore.kernel.org/lkml/7b09fb62-e61a-65b9-a71e-ab725f527ded@intel.com/ [2] https://lore.kernel.org/lkml/54e50a9b-268f-2020-f54c-d38312489e2f@intel.com/ [3] https://lore.kernel.org/lkml/20221220161123.432120-1-peternewman@google.com/ Peter Newman (3): x86/resctrl: Factor rdtgroup lock for multi-file ops x86/resctrl: Factor work to update task CLOSID/RMID x86/resctrl: Implement rename op for mon groups arch/x86/kernel/cpu/resctrl/rdtgroup.c | 170 ++++++++++++++++++------- 1 file changed, 126 insertions(+), 44 deletions(-) base-commit: 2241ab53cbb5cdb08a6b2d4688feb13971058f65