From patchwork Tue Mar 2 08:17:05 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vipin Sharma X-Patchwork-Id: 12111735 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-26.3 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT,USER_IN_DEF_DKIM_WL autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 34A9CC4361A for ; Tue, 2 Mar 2021 15:57:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5588464F17 for ; Tue, 2 Mar 2021 15:57:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1838912AbhCBPzP (ORCPT ); Tue, 2 Mar 2021 10:55:15 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42686 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1377322AbhCBISs (ORCPT ); Tue, 2 Mar 2021 03:18:48 -0500 Received: from mail-pl1-x649.google.com (mail-pl1-x649.google.com [IPv6:2607:f8b0:4864:20::649]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A3E2FC061356 for ; Tue, 2 Mar 2021 00:17:18 -0800 (PST) Received: by mail-pl1-x649.google.com with SMTP id e12so10812562plh.2 for ; Tue, 02 Mar 2021 00:17:18 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=sender:date:in-reply-to:message-id:mime-version:references:subject :from:to:cc; bh=9IvSzdbIQqhRyiLJGvOnZfh3hjug63Y1v74jXsaZzZ4=; b=vjq0i7utFQfq/ROgloM8fVCwD3GgQjSjJzxE39PPfoolW/2BTnmUwVxfnbfg/xE8xf nurEyFcMwK9nSlqkfz+TWWrBExl5stjBN3maC6gC31KMD3tBteKgPHUq12s7UUgkwI9M vp0ePmNo9Ra+e+AbeLvDNxW6QBHsadhycldlmZuWH02z7uHsyD1QYqllyYU3eT01p+fk N2vJPKSArl7dvqr7FyBPla3CszX6Ce2ByDzrrm12jXWuSi0kZ2yktEAiVYRWZrBI7lA/ KBQ/BHPJUdBBRMuJLk+UJD/X8LruP9bdJ6Fiw9PV3Pmud28l2jlck5kQNw4n2qMFnBC6 lbqw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=9IvSzdbIQqhRyiLJGvOnZfh3hjug63Y1v74jXsaZzZ4=; b=EfehRYuQW/4BpfRXuiJfGZia67hiyDrxi3dFkwGBiKeHKu5GxbtyguaOXvcSoxGiYv 850/Cul/mp/0gx1LqAO8Rw9QMOYJOSSt3lV6RQS+jRmYQG/pAE2pVuoVd4WUfzzLNEYR XsfjLOA4STyFp7jcyVxB0s5R9Uq4xVSoZWZ8ZgJRAWc9gmzZ57NOflvmmDthh36vkBjV N8uZpt2ytrWkUf3yqAeQIugbrBNro5Grjkr1JnbiRURFAD+DN5fkX2Fr3oRF2zBI9ZhT XLVMw+2dj9gGqN+Z22nBNx5cBJ1eKnWolXNvCVK59XvUQM28RfI3eO/efcDYydhcbbJj mTsA== X-Gm-Message-State: AOAM531mxhwOhmg/Pdu6K0fyNiuyKVPgC/E5sc9H9XIxxmBtEqvvDPvO Ypt2OXRHf4qFdIkv48GEdckk7Bczai10 X-Google-Smtp-Source: ABdhPJyCXCm/dfyyzcTbG52l5hOFatdhe7phOhVOcb2mXZhlI38K9zFUo51+s70nURdhIGdIur5gyGdzY6gm Sender: "vipinsh via sendgmr" X-Received: from vipinsh.kir.corp.google.com ([2620:0:1008:10:e829:dc2a:968a:1370]) (user=vipinsh job=sendgmr) by 2002:a05:6a00:23c5:b029:1e6:2f2e:a438 with SMTP id g5-20020a056a0023c5b02901e62f2ea438mr19154226pfc.75.1614673038114; Tue, 02 Mar 2021 00:17:18 -0800 (PST) Date: Tue, 2 Mar 2021 00:17:05 -0800 In-Reply-To: <20210302081705.1990283-1-vipinsh@google.com> Message-Id: <20210302081705.1990283-3-vipinsh@google.com> Mime-Version: 1.0 References: <20210302081705.1990283-1-vipinsh@google.com> X-Mailer: git-send-email 2.30.1.766.gb4fecdf3b7-goog Subject: [RFC v2 2/2] cgroup: sev: Miscellaneous cgroup documentation. From: Vipin Sharma To: tj@kernel.org, mkoutny@suse.com, rdunlap@infradead.org, thomas.lendacky@amd.com, brijesh.singh@amd.com, jon.grimm@amd.com, eric.vantassell@amd.com, pbonzini@redhat.com, hannes@cmpxchg.org, frankja@linux.ibm.com, borntraeger@de.ibm.com Cc: corbet@lwn.net, seanjc@google.com, vkuznets@redhat.com, wanpengli@tencent.com, jmattson@google.com, joro@8bytes.org, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, hpa@zytor.com, gingell@google.com, rientjes@google.com, dionnaglaze@google.com, kvm@vger.kernel.org, x86@kernel.org, cgroups@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, Vipin Sharma Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Documentation of miscellaneous cgroup controller. This new controller is used to track and limit the usage of scalar resources. Signed-off-by: Vipin Sharma Reviewed-by: David Rientjes --- Documentation/admin-guide/cgroup-v1/index.rst | 1 + Documentation/admin-guide/cgroup-v1/misc.rst | 4 ++ Documentation/admin-guide/cgroup-v2.rst | 69 ++++++++++++++++++- 3 files changed, 72 insertions(+), 2 deletions(-) create mode 100644 Documentation/admin-guide/cgroup-v1/misc.rst diff --git a/Documentation/admin-guide/cgroup-v1/index.rst b/Documentation/admin-guide/cgroup-v1/index.rst index 226f64473e8e..99fbc8a64ba9 100644 --- a/Documentation/admin-guide/cgroup-v1/index.rst +++ b/Documentation/admin-guide/cgroup-v1/index.rst @@ -17,6 +17,7 @@ Control Groups version 1 hugetlb memcg_test memory + misc net_cls net_prio pids diff --git a/Documentation/admin-guide/cgroup-v1/misc.rst b/Documentation/admin-guide/cgroup-v1/misc.rst new file mode 100644 index 000000000000..661614c24df3 --- /dev/null +++ b/Documentation/admin-guide/cgroup-v1/misc.rst @@ -0,0 +1,4 @@ +=============== +Misc controller +=============== +Please refer "Misc" documentation in Documentation/admin-guide/cgroup-v2.rst diff --git a/Documentation/admin-guide/cgroup-v2.rst b/Documentation/admin-guide/cgroup-v2.rst index 1de8695c264b..74777323b7fd 100644 --- a/Documentation/admin-guide/cgroup-v2.rst +++ b/Documentation/admin-guide/cgroup-v2.rst @@ -63,8 +63,11 @@ v1 is available under :ref:`Documentation/admin-guide/cgroup-v1/index.rst misc.max + + Limit can be set to max by:: + + # echo sev max > misc.max + + Limits can be set higher than the capacity value in the misc.capacity + file. + +Migration and Ownership +~~~~~~~~~~~~~~~~~~~~~~~ + +A miscellaneous scalar resource is charged to the cgroup in which it is used +first, and stays charged to that cgroup until that resource is freed. Migrating +a process to a different cgroup does not move the charge to the destination +cgroup where the process has moved. + +Others +------ + perf_event ~~~~~~~~~~