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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4482AC04A95 for ; Wed, 28 Sep 2022 22:34:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234599AbiI1WeH (ORCPT ); Wed, 28 Sep 2022 18:34:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60650 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234517AbiI1Wdy (ORCPT ); Wed, 28 Sep 2022 18:33:54 -0400 Received: from mail-qt1-x82c.google.com (mail-qt1-x82c.google.com [IPv6:2607:f8b0:4864:20::82c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EA0EAF9620; Wed, 28 Sep 2022 15:33:52 -0700 (PDT) Received: by mail-qt1-x82c.google.com with SMTP id w2so8855253qtv.9; Wed, 28 Sep 2022 15:33:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date; bh=cdp6gKq67l8BHxfvYyqMmk5Gv7X6BRjPu/o7++6IXk0=; b=URRpeJBFdppH8e/fE8Zn7u382jDrgAPrKGhvy+7Q9UV2n6l9mlnKvfUaPasfPDJqgk CD+pbglEc1OI5Fj/Ci2WqTozLVEtwoShQNGOrjiQFjdUvELjoZQctEpQ0qJlyiY1tPms mCJNKHtApeVTyeFWznRhP/VEmF+PEBVfL0Wj6h7o2eqTX4N+Rwbn+bTA29OKo7/TjhZr oFtvm1ZfUUbyXsguDLLXRWV61hzGuJRFQ3SHrca2K/fo6GpbBESMus7lg6s82a/2Xses 6HTILxedb1ZkW+eSgwHqH81i1xdlpXFU+5urGqxgxYDlYtqfNTdk8gQDSt36m8RjOxql PFVQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date; bh=cdp6gKq67l8BHxfvYyqMmk5Gv7X6BRjPu/o7++6IXk0=; b=oZcPVxuDEp4CWnHiUI4KPXN2QJ04Mg02WBfFG+RSBRxnLBrxU3Bv5AWk67ecW7VazB CJ0b5IXsoD38CuJrp9Oa11cL+mvO89htFDzWulixSRP1hZLLYmI+APdGNBQwDRZg7RqI Bc5CmuKVJZzMSW+TKhwPa6ODwXWrOxNnQqpLh6+4BDoFXcO5n9J46hh2fyY1PGebjgAR OFzKMCaS6Pwlc6w770w3/16EnwxUI7lqu89rMYuYyM8GN5gO3AuKmdlQn6pAPQs38SU+ kqS8/EEIFR3DPdVGCVhx6uE4J36q+K0oi+3Ofj3TT7yp+io4FwRtjSYsFhUIe80lf79t fISA== X-Gm-Message-State: ACrzQf2ZmZNwoQIxaCDc9I0sPXTFMs8weC4WOtQ0mzQsFllFZ13ENTPE YSGdOWTDIeqyHcp6+MBRzIE= X-Google-Smtp-Source: AMsMyM5HlDloR0Q6E7bhHNQx3py83nBExasTaOUqKPuAI2ERKE88ypL9nf6ynZrpI0Y72+pqvQzwZg== X-Received: by 2002:a05:622a:190b:b0:35b:b5a2:eceb with SMTP id w11-20020a05622a190b00b0035bb5a2ecebmr25196qtc.529.1664404432585; Wed, 28 Sep 2022 15:33:52 -0700 (PDT) Received: from stbirv-lnx-3.igp.broadcom.net ([192.19.223.252]) by smtp.gmail.com with ESMTPSA id j188-20020a37b9c5000000b006bb83c2be40sm3963481qkf.59.2022.09.28.15.33.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 28 Sep 2022 15:33:52 -0700 (PDT) From: Doug Berger To: Andrew Morton Cc: Jonathan Corbet , Mike Rapoport , Borislav Petkov , "Paul E. McKenney" , Neeraj Upadhyay , Randy Dunlap , Damien Le Moal , Muchun Song , KOSAKI Motohiro , Mel Gorman , Mike Kravetz , Florian Fainelli , David Hildenbrand , Oscar Salvador , Michal Hocko , Joonsoo Kim , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Doug Berger Subject: [PATCH v2 3/9] mm/page_alloc: calculate node_spanned_pages from pfns Date: Wed, 28 Sep 2022 15:32:55 -0700 Message-Id: <20220928223301.375229-4-opendmb@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220928223301.375229-1-opendmb@gmail.com> References: <20220928223301.375229-1-opendmb@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-doc@vger.kernel.org Since the start and end pfns of the node are passed as arguments to calculate_node_totalpages() they might as well be used to specify the node_spanned_pages value for the node rather than accumulating the spans of member zones. This prevents the need for additional adjustments if zones are allowed to overlap. Signed-off-by: Doug Berger --- mm/page_alloc.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index e5486d47406e..3412d644c230 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -7452,7 +7452,7 @@ static void __init calculate_node_totalpages(struct pglist_data *pgdat, unsigned long node_start_pfn, unsigned long node_end_pfn) { - unsigned long realtotalpages = 0, totalpages = 0; + unsigned long realtotalpages = 0; enum zone_type i; for (i = 0; i < MAX_NR_ZONES; i++) { @@ -7483,11 +7483,10 @@ static void __init calculate_node_totalpages(struct pglist_data *pgdat, zone->present_early_pages = real_size; #endif - totalpages += size; realtotalpages += real_size; } - pgdat->node_spanned_pages = totalpages; + pgdat->node_spanned_pages = node_end_pfn - node_start_pfn; pgdat->node_present_pages = realtotalpages; pr_debug("On node %d totalpages: %lu\n", pgdat->node_id, realtotalpages); } -- 2.25.1