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Thu, 14 Dec 2023 01:30:27 +0300 (MSK) Received: from localhost.localdomain (100.64.160.123) by p-i-exch-sc-m01.sberdevices.ru (172.16.192.107) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.40; Thu, 14 Dec 2023 01:30:27 +0300 From: George Stark To: , , , , , , , , , , , , , , Subject: [PATCH v3 02/11] locking: add define if mutex_destroy() is not an empty function Date: Thu, 14 Dec 2023 01:30:11 +0300 Message-ID: <20231213223020.2713164-3-gnstark@salutedevices.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20231213223020.2713164-1-gnstark@salutedevices.com> References: <20231213223020.2713164-1-gnstark@salutedevices.com> MIME-Version: 1.0 X-Originating-IP: [100.64.160.123] X-ClientProxiedBy: p-i-exch-sc-m01.sberdevices.ru (172.16.192.107) To p-i-exch-sc-m01.sberdevices.ru (172.16.192.107) X-KSMG-Rule-ID: 10 X-KSMG-Message-Action: clean X-KSMG-AntiSpam-Lua-Profiles: 182098 [Dec 13 2023] X-KSMG-AntiSpam-Version: 6.1.0.3 X-KSMG-AntiSpam-Envelope-From: gnstark@salutedevices.com X-KSMG-AntiSpam-Rate: 0 X-KSMG-AntiSpam-Status: not_detected X-KSMG-AntiSpam-Method: none X-KSMG-AntiSpam-Auth: dkim=none X-KSMG-AntiSpam-Info: LuaCore: 7 0.3.7 6d6bf5bd8eea7373134f756a2fd73e9456bb7d1a, {Tracking_from_domain_doesnt_match_to}, 100.64.160.123:7.1.2;127.0.0.199:7.1.2;salutedevices.com:7.1.1;d41d8cd98f00b204e9800998ecf8427e.com:7.1.1;smtp.sberdevices.ru:5.0.1,7.1.1, FromAlignment: s, ApMailHostAddress: 100.64.160.123 X-MS-Exchange-Organization-SCL: -1 X-KSMG-AntiSpam-Interceptor-Info: scan successful X-KSMG-AntiPhishing: Clean X-KSMG-LinksScanning: Clean X-KSMG-AntiVirus: Kaspersky Secure Mail Gateway, version 2.0.1.6960, bases: 2023/12/13 21:35:00 #22672360 X-KSMG-AntiVirus-Status: Clean, skipped X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kernel@salutedevices.com, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, linux-leds@vger.kernel.org, George Stark Errors-To: linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" mutex_destroy() is only a debug helper and an empty function on non-debug configurations still we can't legally ignore it because it's the established API call and it can be extended theoretically in the future. Sometimes it could be useful to know e.g. in the higher-level API if mutex_destroy() really does something in the current configuration and it's should be called or skipped otherwise for the sake of optimization so add dedicated define to recognize these cases. Signed-off-by: George Stark Acked-by: Waiman Long --- include/linux/mutex.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/include/linux/mutex.h b/include/linux/mutex.h index a33aa9eb9fc3..2395ce4fcaf6 100644 --- a/include/linux/mutex.h +++ b/include/linux/mutex.h @@ -83,6 +83,9 @@ struct mutex { extern void mutex_destroy(struct mutex *lock); +/* mutex_destroy() is a real function, not a NOP */ +#define mutex_destroy mutex_destroy + #else # define __DEBUG_MUTEX_INITIALIZER(lockname)