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=-9.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable 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 9AF95C742A8 for ; Fri, 12 Jul 2019 08:51:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6AE442166E for ; Fri, 12 Jul 2019 08:51:47 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=amazon.de header.i=@amazon.de header.b="UR3LEgR9" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726411AbfGLIvq (ORCPT ); Fri, 12 Jul 2019 04:51:46 -0400 Received: from smtp-fw-9102.amazon.com ([207.171.184.29]:46518 "EHLO smtp-fw-9102.amazon.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726222AbfGLIvp (ORCPT ); Fri, 12 Jul 2019 04:51:45 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.de; i=@amazon.de; q=dns/txt; s=amazon201209; t=1562921504; x=1594457504; h=from:to:cc:subject:date:message-id; bh=gIX56E206Ygtmlz0jOLcOvzHgmUrVjC3hqqjQDtHYu4=; b=UR3LEgR9qvTWGJK4w2V/1+WTqanObJxl+AXKqhv/UTFNBj9dwl2aEtUQ mYmYFjEZYW6UlVa2xfR3uuFuviZy/w0dnTDJckC4JI5D/VU/5XBJmYCKC ncXqewPnym8CtD9FIqFJDBQLgNqK6Gd4OCbvD7ZT4axMplzkBfkPjsahe A=; X-IronPort-AV: E=Sophos;i="5.62,481,1554768000"; d="scan'208";a="685113937" Received: from sea3-co-svc-lb6-vlan2.sea.amazon.com (HELO email-inbound-relay-2b-859fe132.us-west-2.amazon.com) ([10.47.22.34]) by smtp-border-fw-out-9102.sea19.amazon.com with ESMTP; 12 Jul 2019 08:51:43 +0000 Received: from u54e1ad5160425a4b64ea.ant.amazon.com (pdx2-ws-svc-lb17-vlan3.amazon.com [10.247.140.70]) by email-inbound-relay-2b-859fe132.us-west-2.amazon.com (Postfix) with ESMTPS id 0FFBE222159; Fri, 12 Jul 2019 08:51:41 +0000 (UTC) Received: from u54e1ad5160425a4b64ea.ant.amazon.com (localhost [127.0.0.1]) by u54e1ad5160425a4b64ea.ant.amazon.com (8.15.2/8.15.2/Debian-3) with ESMTP id x6C8pb32024010; Fri, 12 Jul 2019 10:51:38 +0200 Received: (from karahmed@localhost) by u54e1ad5160425a4b64ea.ant.amazon.com (8.15.2/8.15.2/Submit) id x6C8pZ4Q024001; Fri, 12 Jul 2019 10:51:35 +0200 From: KarimAllah Ahmed To: linux-kernel@vger.kernel.org, linux-mm@kvack.org Cc: KarimAllah Ahmed , Andrew Morton , Pavel Tatashin , Oscar Salvador , Michal Hocko , Mike Rapoport , Baoquan He , Qian Cai , Wei Yang , Logan Gunthorpe Subject: [PATCH] mm: sparse: Skip no-map regions in memblocks_present Date: Fri, 12 Jul 2019 10:51:31 +0200 Message-Id: <1562921491-23899-1-git-send-email-karahmed@amazon.de> X-Mailer: git-send-email 2.7.4 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Do not mark regions that are marked with nomap to be present, otherwise these memblock cause unnecessarily allocation of metadata. Cc: Andrew Morton Cc: Pavel Tatashin Cc: Oscar Salvador Cc: Michal Hocko Cc: Mike Rapoport Cc: Baoquan He Cc: Qian Cai Cc: Wei Yang Cc: Logan Gunthorpe Cc: linux-mm@kvack.org Cc: linux-kernel@vger.kernel.org Signed-off-by: KarimAllah Ahmed --- mm/sparse.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/mm/sparse.c b/mm/sparse.c index fd13166..33810b6 100644 --- a/mm/sparse.c +++ b/mm/sparse.c @@ -256,6 +256,10 @@ void __init memblocks_present(void) struct memblock_region *reg; for_each_memblock(memory, reg) { + + if (memblock_is_nomap(reg)) + continue; + memory_present(memblock_get_region_node(reg), memblock_region_memory_base_pfn(reg), memblock_region_memory_end_pfn(reg)); -- 2.7.4