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[2003:cb:c70d:8300:4812:9d4f:6cd8:7f47]) by smtp.gmail.com with ESMTPSA id p11sm11384498eds.38.2022.01.27.04.47.23 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 27 Jan 2022 04:47:25 -0800 (PST) Message-ID: <469b0996-8c2b-a8e1-4c37-f6e60a50ed1e@redhat.com> Date: Thu, 27 Jan 2022 13:47:21 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.4.0 Subject: Re: [PATCH 5/6] mm: make free_area_init_node aware of memory less nodes To: Michal Hocko , Andrew Morton Cc: linux-mm@kvack.org, LKML , Alexey Makhalov , Dennis Zhou , Eric Dumazet , Oscar Salvador , Tejun Heo , Christoph Lameter , Nico Pache , Wei Yang , Rafael Aquini , Michal Hocko References: <20220127085305.20890-1-mhocko@kernel.org> <20220127085305.20890-6-mhocko@kernel.org> From: David Hildenbrand Organization: Red Hat In-Reply-To: <20220127085305.20890-6-mhocko@kernel.org> X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: 645944003D X-Stat-Signature: 3jta61q58acschbuawxqjt73gz5r71u9 Authentication-Results: imf12.hostedemail.com; dkim=pass header.d=redhat.com header.s=mimecast20190719 header.b=gYSQS0Hq; dmarc=pass (policy=none) header.from=redhat.com; spf=none (imf12.hostedemail.com: domain of david@redhat.com has no SPF policy when checking 170.10.133.124) smtp.mailfrom=david@redhat.com X-Rspam-User: nil X-HE-Tag: 1643287650-73254 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On 27.01.22 09:53, Michal Hocko wrote: > From: Michal Hocko > > free_area_init_node is also called from memory less node initialization > path (free_area_init_memoryless_node). It doesn't really make much sense > to display the physical memory range for those nodes: > Initmem setup node XX [mem 0x0000000000000000-0x0000000000000000] > > Instead be explicit that the node is memoryless: > Initmem setup node XX as memoryless > > Acked-by: Rafael Aquini > Signed-off-by: Michal Hocko > --- > mm/page_alloc.c | 11 ++++++++--- > 1 file changed, 8 insertions(+), 3 deletions(-) > > diff --git a/mm/page_alloc.c b/mm/page_alloc.c > index 32d0189de4c5..83da2279be72 100644 > --- a/mm/page_alloc.c > +++ b/mm/page_alloc.c > @@ -7682,9 +7682,14 @@ static void __init free_area_init_node(int nid) > pgdat->node_start_pfn = start_pfn; > pgdat->per_cpu_nodestats = NULL; > > - pr_info("Initmem setup node %d [mem %#018Lx-%#018Lx]\n", nid, > - (u64)start_pfn << PAGE_SHIFT, > - end_pfn ? ((u64)end_pfn << PAGE_SHIFT) - 1 : 0); > + if (start_pfn != end_pfn) { > + pr_info("Initmem setup node %d [mem %#018Lx-%#018Lx]\n", nid, > + (u64)start_pfn << PAGE_SHIFT, > + end_pfn ? ((u64)end_pfn << PAGE_SHIFT) - 1 : 0); > + } else { > + pr_info("Initmem setup node %d as memoryless\n", nid); > + } > + > calculate_node_totalpages(pgdat, start_pfn, end_pfn); > > alloc_node_mem_map(pgdat); Acked-by: David Hildenbrand -- Thanks, David / dhildenb