From nobody Sat Feb 7 18:16:07 2026 Received: from out-181.mta0.migadu.com (out-181.mta0.migadu.com [91.218.175.181]) (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 0514F524F for ; Thu, 16 Oct 2025 05:49:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.181 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760593783; cv=none; b=HsKWBQUJ2KWDf14y9eNPNr3ymqo8gR+DUd7SPcOHyZwyaw14E2WlGT/TCuf7USuIfTw9nERgnbeEXtDX1ZyWItMn0/ksNGe1xaL+G5MBaqGENvNaacQ7QFFo4RxIG8X6O1nL+NfYQemz0WvcANykutRMbWaR0XWr7tAs7yX8224= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760593783; c=relaxed/simple; bh=FeH2ILsi8RigrWTKi4rZwraUZRbqydO1TN/E4Wsb1NM=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=MhimC+3CF/tw19NaLRPceMuHHbO2yaC+lY5hSR/oViJ7YjtKzPPWOY7kpZFK6oc0if8gBPg90O/ML02GLBLUDbIgWIYrgKv5wNGug3QDuUHntQvuUMVqxwqNpteU5SJjNgDiChCz7kEfq4UIMdHx3NEC+p2XcvJ8xsejZDHHlAU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=F8SavXB8; arc=none smtp.client-ip=91.218.175.181 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="F8SavXB8" X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1760593774; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=EFi/2T+JfX3yrnVTv+ZbY4H4bdONoS55M7+1hOejhnA=; b=F8SavXB8nlOB2ONHaUbOYK3T3TF0cql2RjsVnXIRw44j0XDXkxtkV1gbyE3R1E3PxK2U7I 0XWV/LSCy3sl3yl+YNGMbRFkfyqhzl6qkO9wgvWPyIGDi16IUcaSR21zuqD83N/IjDn031 ed2sPRArgdY/G0EnKe7R135bMGaGNgs= From: Ye Liu To: Andrew Morton Cc: Ye Liu , linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: [PATCH] tools/mm/page_owner_sort: add help option support Date: Thu, 16 Oct 2025 13:49:25 +0800 Message-ID: <20251016054927.138510-1-ye.liu@linux.dev> 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 X-Migadu-Flow: FLOW_OUT Content-Type: text/plain; charset="utf-8" From: Ye Liu Add -h/--help option to display usage information and improve code style. Signed-off-by: Ye Liu Reviewed-by: SeongJae Park --- tools/mm/page_owner_sort.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/tools/mm/page_owner_sort.c b/tools/mm/page_owner_sort.c index 880e36df0c11..202eafed66a9 100644 --- a/tools/mm/page_owner_sort.c +++ b/tools/mm/page_owner_sort.c @@ -669,14 +669,15 @@ int main(int argc, char **argv) { "pid", required_argument, NULL, 1 }, { "tgid", required_argument, NULL, 2 }, { "name", required_argument, NULL, 3 }, - { "cull", required_argument, NULL, 4 }, - { "sort", required_argument, NULL, 5 }, + { "cull", required_argument, NULL, 4 }, + { "sort", required_argument, NULL, 5 }, + { "help", no_argument, NULL, 'h' }, { 0, 0, 0, 0}, }; =20 compare_flag =3D COMP_NO_FLAG; =20 - while ((opt =3D getopt_long(argc, argv, "admnpstP", longopts, NULL)) !=3D= -1) + while ((opt =3D getopt_long(argc, argv, "admnpstPh", longopts, NULL)) != =3D -1) switch (opt) { case 'a': compare_flag |=3D COMP_ALLOC; @@ -702,6 +703,9 @@ int main(int argc, char **argv) case 'n': compare_flag |=3D COMP_COMM; break; + case 'h': + usage(); + exit(0); case 1: filter =3D filter | FILTER_PID; fc.pids =3D parse_nums_list(optarg, &fc.pids_size); --=20 2.43.0