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Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.12 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.12; helo=SATLEXMB04.amd.com; pr=C Received: from SATLEXMB04.amd.com (165.204.84.12) by CY4PEPF0000EDD0.mail.protection.outlook.com (10.167.241.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.8158.14 via Frontend Transport; Tue, 19 Nov 2024 17:21:14 +0000 Received: from AUS-P9-MLIMONCI.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 15.1.2507.39; Tue, 19 Nov 2024 11:21:11 -0600 From: Mario Limonciello To: Hans de Goede , =?utf-8?q?Ilpo_J=C3=A4rvinen?= CC: "Rafael J . Wysocki" , Len Brown , Maximilian Luz , Lee Chun-Yi , "Shyam Sundar S K" , Corentin Chary , "Luke D . Jones" , Ike Panhc , Henrique de Moraes Holschuh , "Alexis Belmonte" , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= , Ai Chao , Gergo Koteles , open list , "open list:ACPI" , "open list:MICROSOFT SURFACE PLATFORM PROFILE DRIVER" , "open list:THINKPAD ACPI EXTRAS DRIVER" , Mark Pearson , Matthew Schwartz , Mario Limonciello , Armin Wolf Subject: [PATCH v7 09/22] ACPI: platform_profile: Use `scoped_cond_guard` Date: Tue, 19 Nov 2024 11:17:26 -0600 Message-ID: <20241119171739.77028-10-mario.limonciello@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241119171739.77028-1-mario.limonciello@amd.com> References: <20241119171739.77028-1-mario.limonciello@amd.com> Precedence: bulk X-Mailing-List: linux-acpi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: SATLEXMB04.amd.com (10.181.40.145) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CY4PEPF0000EDD0:EE_|DS0PR12MB7994:EE_ X-MS-Office365-Filtering-Correlation-Id: 3efde092-5d25-4967-1414-08dd08be91fa X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; ARA:13230040|82310400026|1800799024|36860700013|376014|7416014; X-Microsoft-Antispam-Message-Info: =?utf-8?q?hvHdq/GR4+Z/O5Xu5k0ILforSQk6s1b?= =?utf-8?q?tFJpdjzYr0dVwLO9Xvxy/7ijSYU2CZiRrGHXRwxBLfSlkXpbiOOHhnk4ggVFJh8Pg?= =?utf-8?q?nccKH9+gLKkMjlJwZH/ak4OmGKC2pm3DY+UFwBUFQDITc9FtYLKzSP9tSIsaHpqTN?= =?utf-8?q?OzJL1u3Ye4HNZqru0o9o3v8KRxAXZK9vxoMMUkPWlRml2SV9MkYZ6JrtZWHwoo0iy?= =?utf-8?q?rbN7S5cC1yUJBG4nWwqDtgZLv70s6r+k7HRxdgmgQcRvx9xxD/aNO3ut+0k4ZKPOJ?= =?utf-8?q?OZ1ulUmtJWlOiEMtXdSDm/Cgk9PAuzxv6r/OqszZ5cZCWV5tv7Mj1fWzyOygZ5VB8?= =?utf-8?q?hvMz4rkX7Zj9qvdFhw60uUgFqSvm/0za1XyEok1LEzYzSPH6DjJwW2sPdNhgxeQ32?= =?utf-8?q?R0yPoCqDYXSgOL8lr4e94qSDS1StD1Kob9iESI9+Wd18bCJSkkz/HD/R9KUO9flHQ?= =?utf-8?q?okm6oOiQ+5Hg4au40fYbGBnInhLds5y+CuA6uWun2/uSXXwHhfFd+UeGpncFMWilU?= =?utf-8?q?wASYIyGGAkEeJHAAzOzrQa6eJ3ZhqXTsX0OgfG3LDrDmL+h5tUs+oZTuYY/RPfs27?= =?utf-8?q?BkoQ/TCyc1ft0UzNeLKB90s0H9wa//49YNSd10xkRGX2Vnrx5Nmjh0CfbZ/QP1TAE?= =?utf-8?q?C5el1A9SOe0Nk2rPTsQOpRhOU+rAcUUJennQTT8cR5QuNyyskYHCCmDVL6+cy6R8g?= =?utf-8?q?HknjOC3XsG3hwBP+9nU4Md9ecQbLCGYaFs1HHXTimVxU/U2Ww2ev8XSSKLqcKH1pT?= =?utf-8?q?Y9wNeZM7YpN9omHLfJPHvqTcsYGjFRoMwn4jAa3SMYroSPefR1hV1KwvshxMnxV01?= =?utf-8?q?pV72Mq0qGhEEhhKApUNkisGlXmbtle4kE7KbeBMuurOmkmv53isdoINyJf3x41U0W?= =?utf-8?q?flnaVn6W9uNWTiBSzDO+fCELtIPQoYJNEjUvW6p9AWcWPyCZUOwaJylFC+GU/Ufh0?= =?utf-8?q?Fd/ySHp9GMRrN4A8ycXl66GrLJus+Xb2QbiTNMFiQGy5HILm0mdqnGFbaz5z2L8de?= =?utf-8?q?oBNY5nKkIC+OD/CK/hPzp143GexsBYyRKSk1s0KPaB+gtGfmsGZAleMk0vdFLNWRt?= =?utf-8?q?H1d0YRyJm0T+NDzDAgTX0RSLbL7ZzzPl9UiBRN0rtXDrWWKc531MvOaRbOK4vXBGI?= =?utf-8?q?bl2y+J5awFYhwoCdCH8iW19cXs2kUvMf+aQCjxAYacO0wb9ofMfn2qxVexui9YT+C?= =?utf-8?q?uZLB7yWR1sK2saeBVII+TF8GR8N7NryvuUYdzZVsqpdYRW7BE+rdO7CrOEowsTIFB?= =?utf-8?q?m3AooBuRH0xU4rTWTcEI81mVKYxkXyrmU/hr7zYC2/2R4qBZ7/SFRql7c5kLWTBKd?= =?utf-8?q?q0wqxA8yMw3HdZboLq3ZNjckEVPEZf3x/w=3D=3D?= X-Forefront-Antispam-Report: CIP:165.204.84.12; CTRY:US; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:SATLEXMB04.amd.com; PTR:atlvpn-bp.amd.com; CAT:NONE; SFS:(13230040)(82310400026)(1800799024)(36860700013)(376014)(7416014); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 19 Nov 2024 17:21:14.0341 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 3efde092-5d25-4967-1414-08dd08be91fa X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d; Ip=[165.204.84.12]; Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CY4PEPF0000EDD0.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS0PR12MB7994 Migrate away from using an interruptible mutex to scoped_cond_guard in all functions. While changing, move the sysfs notification used in platform_profile_store() outside of mutex scope. Reviewed-by: Armin Wolf Tested-by: Mark Pearson Reviewed-by: Mark Pearson Reviewed-by: Ilpo Järvinen Signed-off-by: Mario Limonciello --- v7: * Add Armin's tag --- drivers/acpi/platform_profile.c | 111 +++++++++++++------------------- 1 file changed, 43 insertions(+), 68 deletions(-) diff --git a/drivers/acpi/platform_profile.c b/drivers/acpi/platform_profile.c index 9729543df6333..32affb75e782d 100644 --- a/drivers/acpi/platform_profile.c +++ b/drivers/acpi/platform_profile.c @@ -27,25 +27,20 @@ static ssize_t platform_profile_choices_show(struct device *dev, char *buf) { int len = 0; - int err, i; - - err = mutex_lock_interruptible(&profile_lock); - if (err) - return err; - - if (!cur_profile) { - mutex_unlock(&profile_lock); - return -ENODEV; - } - - for_each_set_bit(i, cur_profile->choices, PLATFORM_PROFILE_LAST) { - if (len == 0) - len += sysfs_emit_at(buf, len, "%s", profile_names[i]); - else - len += sysfs_emit_at(buf, len, " %s", profile_names[i]); + int i; + + scoped_cond_guard(mutex_intr, return -ERESTARTSYS, &profile_lock) { + if (!cur_profile) + return -ENODEV; + for_each_set_bit(i, cur_profile->choices, PLATFORM_PROFILE_LAST) { + if (len == 0) + len += sysfs_emit_at(buf, len, "%s", profile_names[i]); + else + len += sysfs_emit_at(buf, len, " %s", profile_names[i]); + } } len += sysfs_emit_at(buf, len, "\n"); - mutex_unlock(&profile_lock); + return len; } @@ -56,20 +51,15 @@ static ssize_t platform_profile_show(struct device *dev, enum platform_profile_option profile = PLATFORM_PROFILE_BALANCED; int err; - err = mutex_lock_interruptible(&profile_lock); - if (err) - return err; + scoped_cond_guard(mutex_intr, return -ERESTARTSYS, &profile_lock) { + if (!cur_profile) + return -ENODEV; - if (!cur_profile) { - mutex_unlock(&profile_lock); - return -ENODEV; + err = cur_profile->profile_get(cur_profile, &profile); + if (err) + return err; } - err = cur_profile->profile_get(cur_profile, &profile); - mutex_unlock(&profile_lock); - if (err) - return err; - /* Check that profile is valid index */ if (WARN_ON((profile < 0) || (profile >= ARRAY_SIZE(profile_names)))) return -EIO; @@ -88,28 +78,21 @@ static ssize_t platform_profile_store(struct device *dev, if (i < 0) return -EINVAL; - err = mutex_lock_interruptible(&profile_lock); - if (err) - return err; + scoped_cond_guard(mutex_intr, return -ERESTARTSYS, &profile_lock) { + if (!cur_profile) + return -ENODEV; - if (!cur_profile) { - mutex_unlock(&profile_lock); - return -ENODEV; - } + /* Check that platform supports this profile choice */ + if (!test_bit(i, cur_profile->choices)) + return -EOPNOTSUPP; - /* Check that platform supports this profile choice */ - if (!test_bit(i, cur_profile->choices)) { - mutex_unlock(&profile_lock); - return -EOPNOTSUPP; + err = cur_profile->profile_set(cur_profile, i); + if (err) + return err; } - err = cur_profile->profile_set(cur_profile, i); - if (!err) - sysfs_notify(acpi_kobj, NULL, "platform_profile"); + sysfs_notify(acpi_kobj, NULL, "platform_profile"); - mutex_unlock(&profile_lock); - if (err) - return err; return count; } @@ -140,36 +123,28 @@ int platform_profile_cycle(void) enum platform_profile_option next; int err; - err = mutex_lock_interruptible(&profile_lock); - if (err) - return err; + scoped_cond_guard(mutex_intr, return -ERESTARTSYS, &profile_lock) { + if (!cur_profile) + return -ENODEV; - if (!cur_profile) { - mutex_unlock(&profile_lock); - return -ENODEV; - } + err = cur_profile->profile_get(cur_profile, &profile); + if (err) + return err; - err = cur_profile->profile_get(cur_profile, &profile); - if (err) { - mutex_unlock(&profile_lock); - return err; - } + next = find_next_bit_wrap(cur_profile->choices, PLATFORM_PROFILE_LAST, + profile + 1); - next = find_next_bit_wrap(cur_profile->choices, PLATFORM_PROFILE_LAST, - profile + 1); + if (WARN_ON(next == PLATFORM_PROFILE_LAST)) + return -EINVAL; - if (WARN_ON(next == PLATFORM_PROFILE_LAST)) { - mutex_unlock(&profile_lock); - return -EINVAL; + err = cur_profile->profile_set(cur_profile, next); + if (err) + return err; } - err = cur_profile->profile_set(cur_profile, next); - mutex_unlock(&profile_lock); - - if (!err) - sysfs_notify(acpi_kobj, NULL, "platform_profile"); + sysfs_notify(acpi_kobj, NULL, "platform_profile"); - return err; + return 0; } EXPORT_SYMBOL_GPL(platform_profile_cycle);