From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qk0-f197.google.com (mail-qk0-f197.google.com [209.85.220.197]) by kanga.kvack.org (Postfix) with ESMTP id E12FD6B000C for ; Wed, 23 May 2018 14:24:20 -0400 (EDT) Received: by mail-qk0-f197.google.com with SMTP id 5-v6so2337371qke.19 for ; Wed, 23 May 2018 11:24:20 -0700 (PDT) Received: from mx1.redhat.com (mx3-rdu2.redhat.com. [66.187.233.73]) by mx.google.com with ESMTPS id j5-v6si2158014qvi.225.2018.05.23.11.24.20 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 23 May 2018 11:24:20 -0700 (PDT) From: David Hildenbrand Subject: [PATCH RFCv2 3/4] s390: numa: implement memory_add_physaddr_to_nid() Date: Wed, 23 May 2018 20:24:03 +0200 Message-Id: <20180523182404.11433-4-david@redhat.com> In-Reply-To: <20180523182404.11433-1-david@redhat.com> References: <20180523182404.11433-1-david@redhat.com> Sender: owner-linux-mm@kvack.org List-ID: To: linux-mm@kvack.org Cc: linux-kernel@vger.kernel.org, David Hildenbrand , Martin Schwidefsky , Heiko Carstens , Michal Hocko , Andrew Morton , Vlastimil Babka , Greg Kroah-Hartman , linux-s390@vger.kernel.org The common interface to be used with add_memory(). Cc: Martin Schwidefsky Cc: Heiko Carstens Cc: Michal Hocko Cc: Andrew Morton Cc: Vlastimil Babka Cc: Greg Kroah-Hartman Cc: linux-s390@vger.kernel.org Signed-off-by: David Hildenbrand --- arch/s390/numa/numa.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/arch/s390/numa/numa.c b/arch/s390/numa/numa.c index 06a80434cfe6..8902652ab3e5 100644 --- a/arch/s390/numa/numa.c +++ b/arch/s390/numa/numa.c @@ -44,6 +44,18 @@ int numa_pfn_to_nid(unsigned long pfn) return mode->__pfn_to_nid ? mode->__pfn_to_nid(pfn) : 0; } +#ifdef CONFIG_MEMORY_HOTPLUG +int memory_add_physaddr_to_nid(u64 addr) +{ + int nid = numa_pfn_to_nid(PFN_DOWN(addr)); + + if (nid < 0) + return 0; + return nid; +} +EXPORT_SYMBOL(memory_add_physaddr_to_nid); +#endif + void numa_update_cpu_topology(void) { if (mode->update_cpu_topology) -- 2.17.0