From nobody Mon Feb 9 10:30:42 2026 Received: from mailgw.kylinos.cn (mailgw.kylinos.cn [124.126.103.232]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2BC9B73533 for ; Wed, 28 Feb 2024 11:48:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=124.126.103.232 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709120908; cv=none; b=PIw+ev+RDXessoQ1dTEFq11FkcugWVWnDbKTjIro8h3ymGz/EOgIfCpR7nn7fecXTu3PyLJUjYRU+3JYqyglkVMHtB/H25RQI933QK3qQpHTv81BzX46GD2L0bLM0JRljt1E1C/00EoTHBboEexXc7aDaIGCcT0/4m/CGf3PWPg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709120908; c=relaxed/simple; bh=WL1fpduwUEpRKgpUq+pEj/knyqDpO+pLivu9HQ6uSH4=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=PQir9+oXoD3nYpRtuWnsmrR8i9zlbylznPL1tyqcZAmzMUKK4sFCZfx/GscESPu+fRuqh0d9uOTPowbRm9pqLPWwx8lCDE6D5Thbn3DedxaLCEkvF0WeW7H3vEuVMNZSiVLvQkYptWlw3T+Urwn7pUoBgrw7YONGH0AvNJ2c11A= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=kylinos.cn; spf=pass smtp.mailfrom=kylinos.cn; arc=none smtp.client-ip=124.126.103.232 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=kylinos.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=kylinos.cn X-UUID: dde3066479fe4382bc4efadbeab66e36-20240228 X-CID-O-RULE: Release_Ham X-CID-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.37,REQID:ed1b5a2b-df31-4a64-b9ae-00bffb2acdba,IP:15, URL:0,TC:0,Content:0,EDM:25,RT:0,SF:-15,FILE:0,BULK:0,RULE:Release_Ham,ACT ION:release,TS:25 X-CID-INFO: VERSION:1.1.37,REQID:ed1b5a2b-df31-4a64-b9ae-00bffb2acdba,IP:15,UR L:0,TC:0,Content:0,EDM:25,RT:0,SF:-15,FILE:0,BULK:0,RULE:Release_Ham,ACTIO N:release,TS:25 X-CID-META: VersionHash:6f543d0,CLOUDID:bf656884-8d4f-477b-89d2-1e3bdbef96d1,B ulkID:240228193342X0FU5XHX,BulkQuantity:5,Recheck:0,SF:24|17|19|44|66|102, TC:nil,Content:0,EDM:5,IP:-2,URL:0,File:nil,RT:nil,Bulk:40,QS:nil,BEC:nil, COL:0,OSI:0,OSA:0,AV:0,LES:1,SPR:NO,DKR:0,DKP:0,BRR:0,BRE:0 X-CID-BVR: 0,NGT X-CID-BAS: 0,NGT,0,_ X-CID-FACTOR: TF_CID_SPAM_SNR,TF_CID_SPAM_FAS,TF_CID_SPAM_FSD,TF_CID_SPAM_FSI X-UUID: dde3066479fe4382bc4efadbeab66e36-20240228 X-User: gehao@kylinos.cn Received: from localhost.localdomain [(116.128.244.171)] by mailgw (envelope-from ) (Generic MTA) with ESMTP id 1002070599; Wed, 28 Feb 2024 19:48:20 +0800 From: Hao Ge To: akpm@linux-foundation.org Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, gehao618@163.com, Hao Ge Subject: [PATCH] mm/vmstat: Add order's information for extfrag_index and unusable_index Date: Wed, 28 Feb 2024 19:48:17 +0800 Message-Id: <20240228114817.360084-1-gehao@kylinos.cn> X-Mailer: git-send-email 2.25.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Current cat /sys/kernel/debug/extfrag/extfrag_index and /sys/kernel/debug/extfrag/unusable_index is not friendly to userspace. We should add order's information so that users can clearly understand the situation of each order at a glance like pagetypeinfo. before: cat /sys/kernel/debug/extfrag/extfrag_index: Node 0, zone DMA32 -1.000 -1.000 -1.000 -1.000 -1.000 -1.000 ... Node 0, zone Normal -1.000 -1.000 -1.000 -1.000 -1.000 -1.000 ... cat /sys/kernel/debug/extfrag/unusable_index: Node 0, zone DMA32 0.000 0.000 0.000 0.000 0.001 0.003 0.007 ... Node 0, zone Normal 0.000 0.053 0.106 0.159 0.205 0.244 0.265 ... after: cat /sys/kernel/debug/extfrag/extfrag_index: Extfrag index at order: 0 1 2 3 4 5 ... Node 0, zone DMA -1.000 -1.000 -1.000 -1.000 -1.000 -1.000 ... Node 0, zone Normal -1.000 -1.000 -1.000 -1.000 -1.000 -1.000 ... cat /sys/kernel/debug/extfrag/unusable_index: Unusable index at order: 0 1 2 3 4 5 ... Node 0, zone DMA 0.000 0.030 0.059 0.085 0.096 0.102 ... Node 0, zone Normal 0.000 0.225 0.427 0.569 0.776 0.827 ... Signed-off-by: Hao Ge --- mm/vmstat.c | 18 ++++++++++++++++-- 1 file changed, 16 insertions(+), 2 deletions(-) diff --git a/mm/vmstat.c b/mm/vmstat.c index db79935e4a54..fe0b811e9d7f 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -2178,7 +2178,7 @@ static void unusable_show_print(struct seq_file *m, int index; struct contig_page_info info; =20 - seq_printf(m, "Node %d, zone %8s ", + seq_printf(m, "Node %d, zone %11s ", pgdat->node_id, zone->name); for (order =3D 0; order < NR_PAGE_ORDERS; ++order) { @@ -2201,12 +2201,19 @@ static void unusable_show_print(struct seq_file *m, */ static int unusable_show(struct seq_file *m, void *arg) { + int order; pg_data_t *pgdat =3D (pg_data_t *)arg; =20 /* check memoryless node */ if (!node_state(pgdat->node_id, N_MEMORY)) return 0; =20 + /* Print header */ + seq_printf(m, "%s ", "Unusable index at order:"); + for (order =3D 0; order < NR_PAGE_ORDERS; ++order) + seq_printf(m, "%5d ", order); + seq_putc(m, '\n'); + walk_zones_in_node(m, pgdat, true, false, unusable_show_print); =20 return 0; @@ -2230,7 +2237,7 @@ static void extfrag_show_print(struct seq_file *m, /* Alloc on stack as interrupts are disabled for zone walk */ struct contig_page_info info; =20 - seq_printf(m, "Node %d, zone %8s ", + seq_printf(m, "Node %d, zone %10s ", pgdat->node_id, zone->name); for (order =3D 0; order < NR_PAGE_ORDERS; ++order) { @@ -2247,8 +2254,15 @@ static void extfrag_show_print(struct seq_file *m, */ static int extfrag_show(struct seq_file *m, void *arg) { + int order; pg_data_t *pgdat =3D (pg_data_t *)arg; =20 + /* Print header */ + seq_printf(m, "%s ", "Extfrag index at order:"); + for (order =3D 0; order < NR_PAGE_ORDERS; ++order) + seq_printf(m, "%6d ", order); + seq_putc(m, '\n'); + walk_zones_in_node(m, pgdat, true, false, extfrag_show_print); =20 return 0; --=20 2.25.1