From nobody Sun Feb 8 21:09:50 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 2EE7112F5BF for ; Thu, 29 Feb 2024 14:15:02 +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=1709216108; cv=none; b=FA/3/aYMP+E3Ny7sKR4+fddyti+dPoXB+JkxTB56KXssYjVIWyWj+rr0RMfuEyerD5FlQUacCukDY3bTLw+9Ur9VhoVGFG/iLrlhU/oVUqmjGrhNHo3YpIj5idNQy6+VghOHqUkXirV8aCUh3w7QPQO5dlgsyaFxrReC+SsizoA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709216108; c=relaxed/simple; bh=rzd4JtCwqgERNe+0U2MytHKJF2ruWxwTsPOUunyqin4=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=AIR1WnctokMlSHSRMSx6AnNFWi36UpChD3kaGAx0Ol3htwWbBDHYx0W3elzNSr5CZMKguA9Nssxit7dYZeEp1cvXVroNOqiWpddpWUgRXF5pRv8rB7v6bIW1pdfKN3TjAXqnCFIJIxZiACZZac4FisJ0dynVP5emAMydS1OxXIc= 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: 34a8a4a27f1d4eb58b64b57e66a90f51-20240229 X-CID-O-RULE: Release_Ham X-CID-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.37,REQID:a3fe121b-272e-4285-92d4-ef4856197a96,IP:15, URL:0,TC:0,Content:0,EDM:0,RT:0,SF:-15,FILE:0,BULK:0,RULE:Release_Ham,ACTI ON:release,TS:0 X-CID-INFO: VERSION:1.1.37,REQID:a3fe121b-272e-4285-92d4-ef4856197a96,IP:15,UR L:0,TC:0,Content:0,EDM:0,RT:0,SF:-15,FILE:0,BULK:0,RULE:Release_Ham,ACTION :release,TS:0 X-CID-META: VersionHash:6f543d0,CLOUDID:85d659ff-c16b-4159-a099-3b9d0558e447,B ulkID:240229221451GHP3YYA9,BulkQuantity:0,Recheck:0,SF:66|24|17|19|44|102, TC:nil,Content:0,EDM:-3,IP:-2,URL:0,File:nil,RT:nil,Bulk:nil,QS:nil,BEC:ni l,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: 34a8a4a27f1d4eb58b64b57e66a90f51-20240229 X-User: gehao@kylinos.cn Received: from localhost.localdomain [(116.128.244.171)] by mailgw (envelope-from ) (Generic MTA) with ESMTP id 571878668; Thu, 29 Feb 2024 22:14:48 +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 v2] mm/vmstat: Add order's information for extfrag_index and unusable_index Date: Thu, 29 Feb 2024 22:14:43 +0800 Message-Id: <20240229141443.99408-1-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 ...... ...... ...... ...... Node 0, zone Normal ...... ...... ...... ...... cat /sys/kernel/debug/extfrag/unusable_index: Node 0, zone DMA32 ..... ..... ..... ..... Node 0, zone Normal ..... ..... ..... ..... after: cat /sys/kernel/debug/extfrag/extfrag_index: Extfrag index at order: 0 1 2 3 Node 0, zone DMA ...... ...... ...... ...... Node 0, zone Normal ...... ...... ...... ...... cat /sys/kernel/debug/extfrag/unusable_index: Unusable index at order: 0 1 2 3 Node 0, zone DMA ..... ..... ..... ..... Node 0, zone Normal ..... ..... ..... ..... Signed-off-by: Hao Ge --- v1 -> v2: Use '.' to replace related values for commit message --- 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