From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pf0-f198.google.com (mail-pf0-f198.google.com [209.85.192.198]) by kanga.kvack.org (Postfix) with ESMTP id 8A72F6B0253 for ; Mon, 8 Aug 2016 14:27:33 -0400 (EDT) Received: by mail-pf0-f198.google.com with SMTP id h186so681279272pfg.2 for ; Mon, 08 Aug 2016 11:27:33 -0700 (PDT) Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com. [148.163.156.1]) by mx.google.com with ESMTPS id dh10si38105790pad.226.2016.08.08.11.27.32 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 08 Aug 2016 11:27:32 -0700 (PDT) Received: from pps.filterd (m0098396.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.11/8.16.0.11) with SMTP id u78H5YaX069519 for ; Mon, 8 Aug 2016 14:27:32 -0400 Received: from e18.ny.us.ibm.com (e18.ny.us.ibm.com [129.33.205.208]) by mx0a-001b2d01.pphosted.com with ESMTP id 24na7fpyc7-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Mon, 08 Aug 2016 14:27:31 -0400 Received: from localhost by e18.ny.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Mon, 8 Aug 2016 14:27:30 -0400 From: Reza Arbab Subject: [PATCH 3/4] powerpc/mm: allow memory hotplug into a memoryless node Date: Mon, 8 Aug 2016 13:27:22 -0500 In-Reply-To: <1470680843-28702-1-git-send-email-arbab@linux.vnet.ibm.com> References: <1470680843-28702-1-git-send-email-arbab@linux.vnet.ibm.com> Message-Id: <1470680843-28702-4-git-send-email-arbab@linux.vnet.ibm.com> Sender: owner-linux-mm@kvack.org List-ID: To: Rob Herring , Mark Rutland , Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , Jonathan Corbet , Bharata B Rao , Nathan Fontenot , devicetree@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-doc@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Remove the check which prevents us from hotplugging into an empty node. Signed-off-by: Reza Arbab --- arch/powerpc/mm/numa.c | 13 +------------ 1 file changed, 1 insertion(+), 12 deletions(-) diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c index 80d067d..bc70c4f 100644 --- a/arch/powerpc/mm/numa.c +++ b/arch/powerpc/mm/numa.c @@ -1127,7 +1127,7 @@ static int hot_add_node_scn_to_nid(unsigned long scn_addr) int hot_add_scn_to_nid(unsigned long scn_addr) { struct device_node *memory = NULL; - int nid, found = 0; + int nid; if (!numa_enabled || (min_common_depth < 0)) return first_online_node; @@ -1143,17 +1143,6 @@ int hot_add_scn_to_nid(unsigned long scn_addr) if (nid < 0 || !node_online(nid)) nid = first_online_node; - if (NODE_DATA(nid)->node_spanned_pages) - return nid; - - for_each_online_node(nid) { - if (NODE_DATA(nid)->node_spanned_pages) { - found = 1; - break; - } - } - - BUG_ON(!found); return nid; } -- 1.8.3.1 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org