From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760552AbcIYSiF (ORCPT ); Sun, 25 Sep 2016 14:38:05 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:45056 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1759532AbcIYShO (ORCPT ); Sun, 25 Sep 2016 14:37:14 -0400 X-IMSS-HAND-OFF-DIRECTIVE: 127.0.0.1:10026 From: Reza Arbab To: Michael Ellerman , Benjamin Herrenschmidt , Paul Mackerras , Rob Herring , Frank Rowand , Jonathan Corbet , Andrew Morton Cc: Bharata B Rao , Nathan Fontenot , Stewart Smith , Alistair Popple , Balbir Singh , "Aneesh Kumar K.V" , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, devicetree@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH v3 5/5] mm: enable CONFIG_MOVABLE_NODE on powerpc Date: Sun, 25 Sep 2016 13:36:56 -0500 X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1474828616-16608-1-git-send-email-arbab@linux.vnet.ibm.com> References: <1474828616-16608-1-git-send-email-arbab@linux.vnet.ibm.com> X-TM-AS-GCONF: 00 X-Content-Scanned: Fidelis XPS MAILER x-cbid: 16092518-0020-0000-0000-000009E07D3D X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00005813; HX=3.00000240; KW=3.00000007; PH=3.00000004; SC=3.00000185; SDB=6.00761240; UDB=6.00362465; IPR=6.00536057; BA=6.00004754; NDR=6.00000001; ZLA=6.00000005; ZF=6.00000009; ZB=6.00000000; ZP=6.00000000; ZH=6.00000000; ZU=6.00000002; MB=3.00012779; XFM=3.00000011; UTC=2016-09-25 18:37:12 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 16092518-0021-0000-0000-000055E9AA11 Message-Id: <1474828616-16608-6-git-send-email-arbab@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2016-09-25_10:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=0 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1609020000 definitions=main-1609250356 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org To create a movable node, we need to hotplug all of its memory into ZONE_MOVABLE. Note that to do this, auto_online_blocks should be off. Since the memory will first be added to the default zone, we must explicitly use online_movable to online. Because such a node contains no normal memory, can_online_high_movable() will only allow us to do the onlining if CONFIG_MOVABLE_NODE is set. Enable the use of this config option on PPC64 platforms. Signed-off-by: Reza Arbab --- Documentation/kernel-parameters.txt | 2 +- mm/Kconfig | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index a4f4d69..3d8460d 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -2344,7 +2344,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted. that the amount of memory usable for all allocations is not too small. - movable_node [KNL,X86] Boot-time switch to enable the effects + movable_node [KNL,X86,PPC] Boot-time switch to enable the effects of CONFIG_MOVABLE_NODE=y. See mm/Kconfig for details. MTD_Partition= [MTD] diff --git a/mm/Kconfig b/mm/Kconfig index be0ee11..4b19cd3 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -153,7 +153,7 @@ config MOVABLE_NODE bool "Enable to assign a node which has only movable memory" depends on HAVE_MEMBLOCK depends on NO_BOOTMEM - depends on X86_64 + depends on X86_64 || PPC64 depends on NUMA default n help -- 1.8.3.1