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ast@kernel.org, ziy@nvidia.com, yuzhao@google.com, baolin.wang@linux.alibaba.com, usamaarif642@gmail.com, joel.granados@kernel.org, richard.weiyang@gmail.com, geert+renesas@glider.be, tim.c.chen@linux.intel.com, linux@treblig.org, alexander.shishkin@linux.intel.com, lillian@star-ark.net, chenhuacai@kernel.org, francesco@valla.it, guoweikang.kernel@gmail.com, link@vivo.com, jpoimboe@kernel.org, masahiroy@kernel.org, brauner@kernel.org, thomas.weissschuh@linutronix.de, oleg@redhat.com, mjguzik@gmail.com, andrii@kernel.org, wangfushuai@baidu.com, linux-doc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-media@vger.kernel.org, linaro-mm-sig@lists.linaro.org, linux-i2c@vger.kernel.org, linux-arch@vger.kernel.org, linux-modules@vger.kernel.org, rcu@vger.kernel.org, linux-nfs@vger.kernel.org, linux-rt-devel@lists.linux.dev Subject: [PATCH v17 37/47] completion, dept: introduce init_completion_dmap() API Date: Thu, 2 Oct 2025 17:12:37 +0900 Message-Id: <20251002081247.51255-38-byungchul@sk.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20251002081247.51255-1-byungchul@sk.com> References: <20251002081247.51255-1-byungchul@sk.com> X-Brightmail-Tracker: H4sIAAAAAAAAAzXSa0xTdxQAcP/3WarVm0riHbKhTfCBr8mYniVmaGLi/8sSnR+Mr0iFG9tI 0bUKMrOslaLI3MQmLa4XGSAllRaBgkaqRKnCYA3aWodsAZSJlWZgM7Q4oIa1Or+c/HLOyTnn w5GQ8t/pJIk675igzVPmKhgpJR2fV70mMWNI9emzjmToM9yhIPK6hIKKRicDvqsOBE8iJQje zIgkFLfNUvDW1MWCxW8iwdlqIMA8PMJAechAQbjuHAJrUGQh1LkNZgdfEPB4cgzBW8thKDf7 EIw2nUHQ2jWEoN1+ioHnZddICIzMh0eRMAM95h8YeNnEwCXRhKDociMDlksuCtqeulnw/x0l YMBiIsDh+gq8ZTVEbGWsoXkRiOVFRCyMxi5puEnAVF09C3X6VBB7AzT8ZbeyEB1eD12OFywM njdT0DPUR8OTX0/T4PqjE4HzXJCEEneEAtezWKH9z1VQfbqWgp8rBxgIuCsYGHLO0qAX39Dw 0OGjwNvVHRtivULBA3cDDbbHfmJzDnZWOhGemTYh/NpWROK7Y2ESG1sK8G81PL7Quwa3WQdZ XOU6jo33xmncYk/Dl2+FCFw9EaGxq/4sg10TJhZXz4yS21fukW7KEXLV+YJ23ZdZUpWtUWSO tq88ce9VGdKj6ZRSlCDhuQz+Qccs8cHNPVVM3Ay3nO/vnyLjTuSW8C0/Bum4Sc6bzPf5V8e9 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Q4OliwHPGT0F13qbBKv1CP/SnKawufoGgTUvRmlcfqEc4ZFhHcIDpWoSa7SBtL6nn8S51Qdx aWMPjYcHX9HY/tNI4aclHD7rjMK1hR4G5957y2xaul20PIlPUWTwyuiViSJ5aaWB3mufm/ng hxZlo+GI4yhEyLGxXNUTIx00zc7mXr8eIoMOZadz1ac6BUGTbONUrsU1P+iJ7GaussCBgqbY SK6k2/J3Rswu5h5fOU3+2xnBWax1fx0SqDe3N1JBS9g4TtOfS2iRyIjGmFGoIi0jVaZIiVug SpZnpSkyF+xKT7WhwDeZDnvP3kIDzfEOxAqRdJzYFemRSwSyDFVWqgNxQlIaKk4sc8sl4iRZ 1iFemb5TeSCFVzlQuJCShonXbeMTJewe2X4+mef38sr/XUIYMiUbjd0Q/U0YPkP1Mjz6Q0Wr 8UhTws0R36Sbrc43C/eZ+yxhpebUNerM1b74SXBs+qyKCbcdw4v84qbJ0mLPzKgdR7y+rbE5 9c+u4BY2Zp3jyyP3rS3rE/LcK+Zg/9i7v21FkyOSlmyMc+4+k31y5dqumiT025y7tq9t1btz xdbl3vvT1kgplVwWM49UqmR/AOk0IJhJAwAA X-CFilter-Loop: Reflected Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Currently, dept uses dept's map embedded in task_struct to track dependencies related to wait_for_completion() and its family. So it doesn't need an explicit map basically. However, for those who want to set the maps with customized class or key, introduce a new API to use external maps. Signed-off-by: Byungchul Park --- include/linux/completion.h | 40 +++++++++++++++++++++----------------- 1 file changed, 22 insertions(+), 18 deletions(-) diff --git a/include/linux/completion.h b/include/linux/completion.h index 4d8fb1d95c0a..e50f7d9b4b97 100644 --- a/include/linux/completion.h +++ b/include/linux/completion.h @@ -27,17 +27,15 @@ struct completion { unsigned int done; struct swait_queue_head wait; + struct dept_map *dmap; }; =20 -#define init_completion(x) \ -do { \ - __init_completion(x); \ -} while (0) +#define init_completion(x) init_completion_dmap(x, NULL) =20 /* - * XXX: No use cases for now. Fill the body when needed. + * XXX: This usage using lockdep's map should be deprecated. */ -#define init_completion_map(x, m) init_completion(x) +#define init_completion_map(x, m) init_completion_dmap(x, NULL) =20 static inline void complete_acquire(struct completion *x, long timeout) { @@ -48,8 +46,11 @@ static inline void complete_release(struct completion *x) } =20 #define COMPLETION_INITIALIZER(work) \ - { 0, __SWAIT_QUEUE_HEAD_INITIALIZER((work).wait), } + { 0, __SWAIT_QUEUE_HEAD_INITIALIZER((work).wait), .dmap =3D NULL, } =20 +/* + * XXX: This usage using lockdep's map should be deprecated. + */ #define COMPLETION_INITIALIZER_ONSTACK_MAP(work, map) \ (*({ init_completion_map(&(work), &(map)); &(work); })) =20 @@ -90,15 +91,18 @@ static inline void complete_release(struct completion *= x) #endif =20 /** - * __init_completion - Initialize a dynamically allocated completion + * init_completion_dmap - Initialize a dynamically allocated completion * @x: pointer to completion structure that is to be initialized + * @dmap: pointer to external dept's map to be used as a separated map * * This inline function will initialize a dynamically created completion * structure. */ -static inline void __init_completion(struct completion *x) +static inline void init_completion_dmap(struct completion *x, + struct dept_map *dmap) { x->done =3D 0; + x->dmap =3D dmap; init_swait_queue_head(&x->wait); } =20 @@ -136,13 +140,13 @@ extern void complete_all(struct completion *); =20 #define wait_for_completion(x) \ ({ \ - sdt_might_sleep_start_timeout(NULL, -1L); \ + sdt_might_sleep_start_timeout((x)->dmap, -1L); \ __wait_for_completion(x); \ sdt_might_sleep_end(); \ }) #define wait_for_completion_io(x) \ ({ \ - sdt_might_sleep_start_timeout(NULL, -1L); \ + sdt_might_sleep_start_timeout((x)->dmap, -1L); \ __wait_for_completion_io(x); \ sdt_might_sleep_end(); \ }) @@ -150,7 +154,7 @@ extern void complete_all(struct completion *); ({ \ int __ret; \ \ - sdt_might_sleep_start_timeout(NULL, -1L); \ + sdt_might_sleep_start_timeout((x)->dmap, -1L); \ __ret =3D __wait_for_completion_interruptible(x); \ sdt_might_sleep_end(); \ __ret; \ @@ -159,7 +163,7 @@ extern void complete_all(struct completion *); ({ \ int __ret; \ \ - sdt_might_sleep_start_timeout(NULL, -1L); \ + sdt_might_sleep_start_timeout((x)->dmap, -1L); \ __ret =3D __wait_for_completion_killable(x); \ sdt_might_sleep_end(); \ __ret; \ @@ -168,7 +172,7 @@ extern void complete_all(struct completion *); ({ \ int __ret; \ \ - sdt_might_sleep_start_timeout(NULL, -1L); \ + sdt_might_sleep_start_timeout((x)->dmap, -1L); \ __ret =3D __wait_for_completion_state(x, s); \ sdt_might_sleep_end(); \ __ret; \ @@ -177,7 +181,7 @@ extern void complete_all(struct completion *); ({ \ unsigned long __ret; \ \ - sdt_might_sleep_start_timeout(NULL, t); \ + sdt_might_sleep_start_timeout((x)->dmap, t); \ __ret =3D __wait_for_completion_timeout(x, t); \ sdt_might_sleep_end(); \ __ret; \ @@ -186,7 +190,7 @@ extern void complete_all(struct completion *); ({ \ unsigned long __ret; \ \ - sdt_might_sleep_start_timeout(NULL, t); \ + sdt_might_sleep_start_timeout((x)->dmap, t); \ __ret =3D __wait_for_completion_io_timeout(x, t); \ sdt_might_sleep_end(); \ __ret; \ @@ -195,7 +199,7 @@ extern void complete_all(struct completion *); ({ \ long __ret; \ \ - sdt_might_sleep_start_timeout(NULL, t); \ + sdt_might_sleep_start_timeout((x)->dmap, t); \ __ret =3D __wait_for_completion_interruptible_timeout(x, t); \ sdt_might_sleep_end(); \ __ret; \ @@ -204,7 +208,7 @@ extern void complete_all(struct completion *); ({ \ long __ret; \ \ - sdt_might_sleep_start_timeout(NULL, t); \ + sdt_might_sleep_start_timeout((x)->dmap, t); \ __ret =3D __wait_for_completion_killable_timeout(x, t); \ sdt_might_sleep_end(); \ __ret; \ --=20 2.17.1