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 X-Spam-Level: X-Spam-Status: No, score=-2.4 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,USER_AGENT_SANE_1 autolearn=no 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 2E90CC432C0 for ; Fri, 22 Nov 2019 01:54:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 013FB206D7 for ; Fri, 22 Nov 2019 01:54:41 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="bsIhPtmI" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726685AbfKVByk (ORCPT ); Thu, 21 Nov 2019 20:54:40 -0500 Received: from aserp2120.oracle.com ([141.146.126.78]:47576 "EHLO aserp2120.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726265AbfKVByj (ORCPT ); Thu, 21 Nov 2019 20:54:39 -0500 Received: from pps.filterd (aserp2120.oracle.com [127.0.0.1]) by aserp2120.oracle.com (8.16.0.27/8.16.0.27) with SMTP id xAM1sIoL121555; Fri, 22 Nov 2019 01:54:18 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=subject : to : cc : references : from : message-id : date : mime-version : in-reply-to : content-type : content-transfer-encoding; s=corp-2019-08-05; bh=h098rWglCkWR1LdZtyG2oxKaMO6+fTPcAneswQCztKA=; b=bsIhPtmITYCvuB9CmcJOaeiqqXIsplpKNvmWRC9hRS8ttG0hRXCINa9nXOpSaAnjsMRO jzYQ3cye5hPVug6OJBz/CTpPBnYfDVbDjhmd94oFPywKTFZggEN+Eu2aTmociWwmnj8U QB1iN5V1Ny8gQiRZtZ/Z43jdtXKctBtt551T7KyIsALfvv+q6g4n8CmTUSx/2xgFuA1k Dd4BSx21YFKp0BI+QLtUrb7jl68G30+l14D3myoVxuenNN7MiATvCHzweHC2l0Ix87Jy B5yrLhnWZjjq7GZrJB2b6IMo2eDbA5ctALrPPDJC8yaM4W25IiEDsOWDtM6BC2Z80PX+ nA== Received: from aserp3030.oracle.com (aserp3030.oracle.com [141.146.126.71]) by aserp2120.oracle.com with ESMTP id 2wa92q7tus-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 22 Nov 2019 01:54:17 +0000 Received: from pps.filterd (aserp3030.oracle.com [127.0.0.1]) by aserp3030.oracle.com (8.16.0.27/8.16.0.27) with SMTP id xAM1s1NM087198; Fri, 22 Nov 2019 01:54:17 GMT Received: from aserv0121.oracle.com (aserv0121.oracle.com [141.146.126.235]) by aserp3030.oracle.com with ESMTP id 2wd47y0m8q-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 22 Nov 2019 01:54:17 +0000 Received: from abhmp0011.oracle.com (abhmp0011.oracle.com [141.146.116.17]) by aserv0121.oracle.com (8.14.4/8.13.8) with ESMTP id xAM1sFVT006736; Fri, 22 Nov 2019 01:54:16 GMT Received: from prakashs-mbp-2.lan (/98.248.138.49) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Thu, 21 Nov 2019 17:54:15 -0800 Subject: Re: [RESEND RFC PATCH 0/1] CAP_SYS_NICE inside user namespace To: "Enrico Weigelt, metux IT consult" , Jann Horn Cc: kernel list , Linux API , "Eric W. Biederman" , Thomas Gleixner , Peter Zijlstra , "Serge E. Hallyn" , Christian Brauner References: <1574096478-11520-1-git-send-email-prakash.sangappa@oracle.com> <9a63f7ae-562e-67a6-8f40-050c58c08933@oracle.com> From: Prakash Sangappa Message-ID: <4593138d-421e-5770-6dd5-e31f103911c5@oracle.com> Date: Thu, 21 Nov 2019 17:54:13 -0800 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Content-Language: en-US X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9448 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=0 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1911140001 definitions=main-1911220015 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9448 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1011 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1911140001 definitions=main-1911220015 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 11/21/19 10:33 AM, Enrico Weigelt, metux IT consult wrote: > On 18.11.19 21:34, Prakash Sangappa wrote: > >> It is more the latter. Admin should be able to explicitly decide that container A >> workload is to be given priority over other containers. > I guess, you're talking about the host's admin, correct ? Yes, Specifically host's admin decides which container gets the privilege to increase priority of processes inside that container. > > Shouldn't this already be possibly by tweaking the container's cgroups ? Don't think so. The use case is that admin/user inside the container needs to be able to increase the priority of some the critical processes running in the container. > > > --mtx >