From patchwork Mon Jun 19 19:05:00 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wyes Karny X-Patchwork-Id: 110145 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:994d:0:b0:3d9:f83d:47d9 with SMTP id k13csp3214956vqr; Mon, 19 Jun 2023 12:40:59 -0700 (PDT) X-Google-Smtp-Source: ACHHUZ4n9i6QIsPDCOpknT8lkhcMoLWZvMaA6UmDVmyaZVbRQG+eLNjtMap536EBrHlNFkV+uhEx X-Received: by 2002:a05:6871:411:b0:1a6:a6fc:f6f8 with SMTP id d17-20020a056871041100b001a6a6fcf6f8mr11227064oag.50.1687203659504; Mon, 19 Jun 2023 12:40:59 -0700 (PDT) ARC-Seal: i=2; a=rsa-sha256; t=1687203659; cv=pass; d=google.com; s=arc-20160816; b=nnwS9BSTIfCJrhBi7+VzyM8hTVSzzLbv50rJ8AbN3J7tF0h9Wf9IQOErgdhuuMwRt6 Z6bPFmr3/Jzq8/wODpEkWk0repcK2LMP1yE78Aerh1UBRYMfUNuDHijLTOJ00oXD91iE gcwn44eXWop4J7j3cWCMjEkTxbO8ReKs4cuh5WHwMZG7apK4vFulbe/8DU1rPZ9ezWJy ziYEXWvfs+O2ap8VOKzFUo65WLmno/EyUH563pGQyxR4niEiJVFPy08pDqIR5bLnmfdA d5pBpo9Hj2FY01+y+ZYOAtMHdfcgO6djJjzwfX9/JocZ3uFXOEePBuXTrpIydcSG4wGQ 2tYw== ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=NQlqZYlreNSY3LyI7KoCib8kaJACbv3iuZxvQEl5aYM=; b=DihAMxMxPlqgkpQYyg8JHo9O6bRTV8JGPP2+b2q+SUQAswvWOEec1nQrNKZ+sgoUb8 d8jW0hhRoqLoI/YVK+N4MPRFjQPEWKZXuc9cwnK0E9JeYF2EEj8uxlQoQrNa+R0p02Yo HjtAl8wXftEcG3X99Ii5god1I06ktDWDWj6q/kwfSOaWRmVIIGTiAP5QRDSPW8D6E7Vz W5qypuoUxU4NqxtqwZdh5VcnLt510d8/J1edTWZDwBfOi72LM0h6UKh/B5m0yAtpDXOC fU+XyAR+d6318HKpPBV9UcVspEf1u3IZwhgimq+tkbyOsG324GafNbQ1R0xi31TBwRro cF2w== ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@amd.com header.s=selector1 header.b=0ZgYgcuj; arc=pass (i=1 spf=pass spfdomain=amd.com dmarc=pass fromdomain=amd.com); spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=amd.com Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id k21-20020a637b55000000b00534849cb1afsi121158pgn.593.2023.06.19.12.40.45; Mon, 19 Jun 2023 12:40:59 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@amd.com header.s=selector1 header.b=0ZgYgcuj; arc=pass (i=1 spf=pass spfdomain=amd.com dmarc=pass fromdomain=amd.com); spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=amd.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229945AbjFSTGU (ORCPT + 99 others); Mon, 19 Jun 2023 15:06:20 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35020 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232099AbjFSTGS (ORCPT ); Mon, 19 Jun 2023 15:06:18 -0400 Received: from NAM11-BN8-obe.outbound.protection.outlook.com (mail-bn8nam11on2040.outbound.protection.outlook.com [40.107.236.40]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D53B8E65; Mon, 19 Jun 2023 12:06:10 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=aUuzT1DCh3iaRxUOr4ytvTeTAwDrPy+luTh3+FcgE+96/uOEN+7P1KMeOQuKbMz58X16oUc2PHWhgdskkP5B/Outlv1iUqsM9M1pub4WI+vKluzZhZpN43HMbGRQtf0UfLm70hJNZRiHJyiN07RgTUPXV7M9kwOjswA2xIlrk0RNtrGH687gst7KnuUZPyj9Isch0Ee9ZaurRzKix83zE/PohZuLn9wrhNALkzXuK4E9kcESjtLAcNOB4YrG4Ro1PtS+n2F13mhJkcRQ9OvxiH7kqfZqzMLQUcUMHGGXcUgptMWOkt5LyECllP2ZhirTvHvSreIZOi8UDsqj6JUXLw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=NQlqZYlreNSY3LyI7KoCib8kaJACbv3iuZxvQEl5aYM=; b=j/2xnWaxSdgFQUBRrC6Rk0PLD7ELtZXwm2Egr+NplBGvSjC9Es2g9NP+ozHaG9tKyK83d01hHmgSzNbZ7ZB7xXGX8MgMtR/4FtYLOENwt827Ja770HWpkUV+8hJTgXLEdtx+FNybfmq78XGS5mzXUSmayVs57tP+tgPqTNz/GaqCu78W4/MWQmpiE89KKS6szEQkckp04hwABXPE2GC5JVEjHe4I2vQ+z02yG2vt3QBsa4Oi+MBHQ7SU+kyCrXJM9cFKKnU+eCx2+9J1lsVSRaUCqDsomyXnahEOOE/IIT7sr5nd0shXVMJH0lTBfCm4iKWBCx0W95yGBYQGH6wvpQ== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 165.204.84.17) smtp.rcpttodomain=suse.com smtp.mailfrom=amd.com; dmarc=pass (p=quarantine sp=quarantine pct=100) action=none header.from=amd.com; dkim=none (message not signed); arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amd.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=NQlqZYlreNSY3LyI7KoCib8kaJACbv3iuZxvQEl5aYM=; b=0ZgYgcujxJfH4/xPl+bgfWoMd2mlXeT3C/VyuHzrg3QOPHg/4gSQZzqO4B6SeLTdAgGQSZvHmyKcw7ulsk2BAldx8zXC3sST10SXq6vbj5YiqpcDX+/YNBAWLGyXMqNoac1zZKOJoWDcj3h0vT60VSbYL8GWw+neUfXgqc9IleE= Received: from DM6PR12CA0022.namprd12.prod.outlook.com (2603:10b6:5:1c0::35) by PH8PR12MB7448.namprd12.prod.outlook.com (2603:10b6:510:214::11) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6500.36; Mon, 19 Jun 2023 19:06:08 +0000 Received: from DM6NAM11FT041.eop-nam11.prod.protection.outlook.com (2603:10b6:5:1c0:cafe::1e) by DM6PR12CA0022.outlook.office365.com (2603:10b6:5:1c0::35) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6500.37 via Frontend Transport; Mon, 19 Jun 2023 19:06:08 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 165.204.84.17) smtp.mailfrom=amd.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=amd.com; Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C Received: from SATLEXMB04.amd.com (165.204.84.17) by DM6NAM11FT041.mail.protection.outlook.com (10.13.172.98) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.6500.37 via Frontend Transport; Mon, 19 Jun 2023 19:06:07 +0000 Received: from beas.amd.com (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.23; Mon, 19 Jun 2023 14:06:04 -0500 From: Wyes Karny To: , CC: , , , , , , , Wyes Karny , Mario Limonciello Subject: [PATCH v3 2/5] cpupower: Add is_valid_path API Date: Mon, 19 Jun 2023 19:05:00 +0000 Message-ID: <20230619190503.4061-3-wyes.karny@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230619190503.4061-1-wyes.karny@amd.com> References: <20230619190503.4061-1-wyes.karny@amd.com> MIME-Version: 1.0 X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB03.amd.com (10.181.40.144) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DM6NAM11FT041:EE_|PH8PR12MB7448:EE_ X-MS-Office365-Filtering-Correlation-Id: 42badac2-b557-4164-44d2-08db70f83cb9 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:SATLEXMB04.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230028)(4636009)(396003)(39860400002)(376002)(136003)(346002)(451199021)(40470700004)(46966006)(36840700001)(478600001)(70206006)(70586007)(36756003)(8676002)(4326008)(41300700001)(81166007)(47076005)(356005)(40480700001)(2616005)(426003)(83380400001)(336012)(82310400005)(44832011)(86362001)(7696005)(5660300002)(6666004)(2906002)(110136005)(54906003)(316002)(8936002)(1076003)(26005)(186003)(16526019)(40460700003)(82740400003)(36860700001)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 19 Jun 2023 19:06:07.5251 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 42badac2-b557-4164-44d2-08db70f83cb9 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: DM6NAM11FT041.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH8PR12MB7448 X-Spam-Status: No, score=-1.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FORGED_SPF_HELO, RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H2,SPF_HELO_PASS,SPF_NONE, T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1769161264725231297?= X-GMAIL-MSGID: =?utf-8?q?1769161264725231297?= Add is_valid_path API to check whether the sysfs file is present or not. Suggested-by: Gautham R. Shenoy Reviewed-by: Mario Limonciello Signed-off-by: Wyes Karny Tested-by: Perry Yuan Acked-by: Huang Rui --- tools/power/cpupower/lib/cpupower.c | 7 +++++++ tools/power/cpupower/lib/cpupower_intern.h | 1 + 2 files changed, 8 insertions(+) diff --git a/tools/power/cpupower/lib/cpupower.c b/tools/power/cpupower/lib/cpupower.c index 3f7d0c0c5067..7a2ef691b20e 100644 --- a/tools/power/cpupower/lib/cpupower.c +++ b/tools/power/cpupower/lib/cpupower.c @@ -14,6 +14,13 @@ #include "cpupower.h" #include "cpupower_intern.h" +int is_valid_path(const char *path) +{ + if (access(path, F_OK) == -1) + return 0; + return 1; +} + unsigned int cpupower_read_sysfs(const char *path, char *buf, size_t buflen) { ssize_t numread; diff --git a/tools/power/cpupower/lib/cpupower_intern.h b/tools/power/cpupower/lib/cpupower_intern.h index ac1112b956ec..5fdb8620d41b 100644 --- a/tools/power/cpupower/lib/cpupower_intern.h +++ b/tools/power/cpupower/lib/cpupower_intern.h @@ -7,5 +7,6 @@ #define SYSFS_PATH_MAX 255 +int is_valid_path(const char *path); unsigned int cpupower_read_sysfs(const char *path, char *buf, size_t buflen); unsigned int cpupower_write_sysfs(const char *path, char *buf, size_t buflen);