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rcu@vger.kernel.org, linux-nfs@vger.kernel.org, linux-rt-devel@lists.linux.dev, 2407018371@qq.com, dakr@kernel.org, miguel.ojeda.sandonis@gmail.com, neilb@ownmail.net, bagasdotme@gmail.com, wsa+renesas@sang-engineering.com, dave.hansen@intel.com, geert@linux-m68k.org, ojeda@kernel.org, alex.gaynor@gmail.com, gary@garyguo.net, bjorn3_gh@protonmail.com, lossin@kernel.org, a.hindborg@kernel.org, aliceryhl@google.com, tmgross@umich.edu, rust-for-linux@vger.kernel.org Subject: [PATCH v18 32/42] completion, dept: introduce init_completion_dmap() API Date: Fri, 5 Dec 2025 16:18:45 +0900 Message-Id: <20251205071855.72743-33-byungchul@sk.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20251205071855.72743-1-byungchul@sk.com> References: <20251205071855.72743-1-byungchul@sk.com> X-Brightmail-Tracker: H4sIAAAAAAAAAzWSa0xTZxjH955bTytNTioZZ7qFrQuZ01DBiHk+LNPEXV4zjVO3fdAls5ET OaEgaS2XMZPWiVydTU2L0o2b2jE4AjlgJkK1A+xwiBY10k0Bi4wNC2NWLqHIXGHz2y/P//n/ 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agnFGSo3h3sBQKmY1gY4hcCEPK+VKYqagxvVWKngGZmmolJkOPrQngXqXrRMur23PhCKKuCCjGE7Re+OARexf7N8oHiD98g+AgBUyazoEaHr6M0MEhGXa3YdJB/wG7xW1QoFX X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: 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; }; -#define init_completion(x) \ -do { \ - __init_completion(x); \ -} while (0) +#define init_completion(x) init_completion_dmap(x, NULL) /* - * 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) static inline void complete_acquire(struct completion *x, long timeout) { @@ -48,8 +46,11 @@ static inline void complete_release(struct completion *x) } #define COMPLETION_INITIALIZER(work) \ - { 0, __SWAIT_QUEUE_HEAD_INITIALIZER((work).wait), } + { 0, __SWAIT_QUEUE_HEAD_INITIALIZER((work).wait), .dmap = NULL, } +/* + * XXX: This usage using lockdep's map should be deprecated. + */ #define COMPLETION_INITIALIZER_ONSTACK_MAP(work, map) \ (*({ init_completion_map(&(work), &(map)); &(work); })) @@ -90,15 +91,18 @@ static inline void complete_release(struct completion *x) #endif /** - * __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 = 0; + x->dmap = dmap; init_swait_queue_head(&x->wait); } @@ -136,13 +140,13 @@ extern void complete_all(struct completion *); #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 = __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 = __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 = __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 = __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 = __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 = __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 = __wait_for_completion_killable_timeout(x, t); \ sdt_might_sleep_end(); \ __ret; \ -- 2.17.1