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 7A4EFC6FA82 for ; Wed, 28 Sep 2022 22:33:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234579AbiI1Wdx (ORCPT ); Wed, 28 Sep 2022 18:33:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60584 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234479AbiI1Wdv (ORCPT ); Wed, 28 Sep 2022 18:33:51 -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 B8770F9617; Wed, 28 Sep 2022 15:33:50 -0700 (PDT) Received: by mail-qt1-x82c.google.com with SMTP id w2so8855194qtv.9; Wed, 28 Sep 2022 15:33:50 -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=6/+RylwAUS1L6kGkdbzNevLkV7SCUovxqo9fjOaS6JU=; b=kC/0LNb9bktbL+TEwR3l+o6fUDutxrrSeCaNe1//+eoGCAW+xNZO4DlmQHy9VcTyfS NwAIyqoskQm/m5kv6XZ4r7B1ACZBqZis8V/cQNWWyzM9pA3Is409pWX7+mJZ+/N2vvBI YozbOIh7aY5FgIxfp56OJu1Gme5MA8TIs7VrQ4zlIKfuDoRx/M7tAtjTXSP7dzFQ50dF x6WJ/l4IoBT3rvV++v7Beym46s0QSrWDIFgJllEiXfwCqYwnQOCcV3XO4+cbD8UDzrDC Fgpv0bDTnfoI7cOl7Bdut11t3RGz5K9z2orfa9hNqZxWTfMH5f4yEJcCefUWQ9e0L4rd pWOA== 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=6/+RylwAUS1L6kGkdbzNevLkV7SCUovxqo9fjOaS6JU=; b=T459pcZ7buM1cuU/Nt9RP4nnxyl0pU9W/4+nlQkTGdVzPcYKrPll+5ZFtj0JAZIAsD JiD53QLOQQHH9+OYAxcsCTBTI3JI88267YOG+3+TFalKSMNO55mlDVon0m3TWGhB7Xqx VE4UIeoahloZ1VYIEQvefHlLKZQcdOA2Hed3Vb1URyyOPJDzVTuyd3hjkOVVTPrFu4z4 v26Xm0nvwWpurOTlgbV2ne+TG9n9KaoDIYR8gf6WNhq/ud6PtB0eemlOmc/4fSyJbilx WD7MfsVMxYN4bsOuwA+vUgFjZqPWnajqa7blCHI5X7zPHkf2CtmLqf3yPXM9PXhYW8P2 pDNg== X-Gm-Message-State: ACrzQf07ZbxpDokL55Ej5tQsQCMfEvYcL5MEv/c8zvhd5PU9PZasFOJM hXgd42QAesnkRYkEeGY47n4= X-Google-Smtp-Source: AMsMyM6j7B74qZOjrMnDAmps4FdyuXPteigyZvK3BDi31VGk6vlpVOIX8YjcSQSYPDGzBZGstAm8RA== X-Received: by 2002:a05:622a:138f:b0:35b:bb7b:743c with SMTP id o15-20020a05622a138f00b0035bbb7b743cmr33120qtk.361.1664404429867; Wed, 28 Sep 2022 15:33:49 -0700 (PDT) Received: from stbirv-lnx-3.igp.broadcom.net ([192.19.223.252]) by smtp.gmail.com with ESMTPSA id j188-20020a37b9c5000000b006bb83c2be40sm3963481qkf.59.2022.09.28.15.33.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 28 Sep 2022 15:33:49 -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 2/9] mm/vmstat: show start_pfn when zone spans pages Date: Wed, 28 Sep 2022 15:32:54 -0700 Message-Id: <20220928223301.375229-3-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 A zone that overlaps with another zone may span a range of pages that are not present. In this case, displaying the start_pfn of the zone allows the zone page range to be identified. Signed-off-by: Doug Berger --- mm/vmstat.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/mm/vmstat.c b/mm/vmstat.c index 90af9a8572f5..e2f19f2b7615 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -1717,6 +1717,11 @@ static void zoneinfo_show_print(struct seq_file *m, pg_data_t *pgdat, /* If unpopulated, no other information is useful */ if (!populated_zone(zone)) { + /* Show start_pfn for empty overlapped zones */ + if (zone->spanned_pages) + seq_printf(m, + "\n start_pfn: %lu", + zone->zone_start_pfn); seq_putc(m, '\n'); return; } -- 2.25.1