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=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 21D0CC4CEC6 for ; Thu, 12 Sep 2019 15:40:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id F2F3E20578 for ; Thu, 12 Sep 2019 15:40:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1733098AbfILPkC (ORCPT ); Thu, 12 Sep 2019 11:40:02 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:47324 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1732566AbfILPkC (ORCPT ); Thu, 12 Sep 2019 11:40:02 -0400 Received: from pps.filterd (m0098420.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x8CFXoMW109103; Thu, 12 Sep 2019 11:39:49 -0400 Received: from pps.reinject (localhost [127.0.0.1]) by mx0b-001b2d01.pphosted.com with ESMTP id 2uyqfmv0k7-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 12 Sep 2019 11:39:49 -0400 Received: from m0098420.ppops.net (m0098420.ppops.net [127.0.0.1]) by pps.reinject (8.16.0.27/8.16.0.27) with SMTP id x8CFYJmk111935; Thu, 12 Sep 2019 11:39:48 -0400 Received: from ppma02dal.us.ibm.com (a.bd.3ea9.ip4.static.sl-reverse.com [169.62.189.10]) by mx0b-001b2d01.pphosted.com with ESMTP id 2uyqfmv0ju-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 12 Sep 2019 11:39:48 -0400 Received: from pps.filterd (ppma02dal.us.ibm.com [127.0.0.1]) by ppma02dal.us.ibm.com (8.16.0.27/8.16.0.27) with SMTP id x8CFZlMR026556; Thu, 12 Sep 2019 15:39:48 GMT Received: from b03cxnp08027.gho.boulder.ibm.com (b03cxnp08027.gho.boulder.ibm.com [9.17.130.19]) by ppma02dal.us.ibm.com with ESMTP id 2uv467yxgm-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 12 Sep 2019 15:39:47 +0000 Received: from b03ledav003.gho.boulder.ibm.com (b03ledav003.gho.boulder.ibm.com [9.17.130.234]) by b03cxnp08027.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x8CFdj4j52166930 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 12 Sep 2019 15:39:45 GMT Received: from b03ledav003.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 9D3F86A061; Thu, 12 Sep 2019 15:39:45 +0000 (GMT) Received: from b03ledav003.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 7AA6D6A057; Thu, 12 Sep 2019 15:39:45 +0000 (GMT) Received: from localhost (unknown [9.41.101.192]) by b03ledav003.gho.boulder.ibm.com (Postfix) with ESMTP; Thu, 12 Sep 2019 15:39:45 +0000 (GMT) From: Nathan Lynch To: "Gautham R. Shenoy" Cc: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, Vaidyanathan Srinivasan , Kamalesh Babulal , "Naveen N . Rao" , "Aneesh Kumar K.V" , Michael Ellerman , Nicholas Piggin , Tyrel Datwyler Subject: Re: [PATCH 0/2] pseries/hotplug: Change the default behaviour of cede_offline In-Reply-To: <1568284541-15169-1-git-send-email-ego@linux.vnet.ibm.com> References: <1568284541-15169-1-git-send-email-ego@linux.vnet.ibm.com> Date: Thu, 12 Sep 2019 10:39:45 -0500 Message-ID: <87impxr0am.fsf@linux.ibm.com> MIME-Version: 1.0 Content-Type: text/plain X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-09-12_08:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=1 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=642 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1906280000 definitions=main-1909120160 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org "Gautham R. Shenoy" writes: > The patchset also defines a new sysfs attribute > "/sys/device/system/cpu/cede_offline_enabled" on PSeries Linux guests > to allow userspace programs to change the state into which the > offlined CPU need to be put to at runtime. A boolean sysfs interface will become awkward if we need to add another mode in the future. What do you think about naming the attribute something like 'offline_mode', with the possible values 'extended-cede' and 'rtas-stopped'?