From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id ECE90C43458 for ; Mon, 6 Jul 2026 06:21:50 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id C8A326B00EB; Mon, 6 Jul 2026 02:21:00 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id C616A6B00EF; Mon, 6 Jul 2026 02:21:00 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id B02736B00F0; Mon, 6 Jul 2026 02:21:00 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0017.hostedemail.com [216.40.44.17]) by kanga.kvack.org (Postfix) with ESMTP id 8228D6B00EB for ; Mon, 6 Jul 2026 02:21:00 -0400 (EDT) Received: from smtpin01.hostedemail.com (lb01a-stub [10.200.18.249]) by unirelay07.hostedemail.com (Postfix) with ESMTP id 010761686F6 for ; Mon, 6 Jul 2026 06:20:59 +0000 (UTC) X-FDA: 84957353880.01.5260377 Received: from invmail4.hynix.com (exvmail4.skhynix.com [166.125.252.92]) by imf13.hostedemail.com (Postfix) with ESMTP id 1F6E420006 for ; Mon, 6 Jul 2026 06:20:57 +0000 (UTC) Authentication-Results: imf13.hostedemail.com; dkim=none; dmarc=pass (policy=none) header.from=sk.com; spf=pass (imf13.hostedemail.com: domain of byungchul@sk.com designates 166.125.252.92 as permitted sender) smtp.mailfrom=byungchul@sk.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1783318858; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=YcZh1vV8SgfnVfzw8dvpv0mjAeTrgvYMwuwe6YQxv7g=; b=wQJfmbQbZHvDkSQiHFQ2hRwq9WZqssvD8umD93a2VAcVouVkah/HvFjiUMLS1NNwnnWOCF T5sB/jWVkNFfUi9WFEmbKOSna7H+NvTKKvl9o2LhwCZT1QteLnLABDc1hYLLxmdbibEcMd ST3T3qoIHA4ctB1GBaMA2YcDP6ycgyM= ARC-Authentication-Results: i=1; imf13.hostedemail.com; dkim=none; dmarc=pass (policy=none) header.from=sk.com; spf=pass (imf13.hostedemail.com: domain of byungchul@sk.com designates 166.125.252.92 as permitted sender) smtp.mailfrom=byungchul@sk.com ARC-Seal: i=1; a=rsa-sha256; d=hostedemail.com; s=arc-20220608; cv=none; t=1783318858; b=z3Gz7bziemJxddcW1FoyU/Wnl9NiSRVnkym4zzLlRXQVOkn1jhppzW3svaHtUNWQwhhSIK 3tBHp/K5fylJZA8/3Ufy19E0Cjp76P2sFZEIt9ayR95iCTfuRebyy9mBMfrlg3buHQrEsl nQFAfAcf4UpiTOW76FxM8ayFwj5XX6Q= X-AuditID: a67dfc5b-c45ff70000001609-0f-6a4b49054145 From: Byungchul Park To: linux-kernel@vger.kernel.org Cc: max.byungchul.park@gmail.com, kernel_team@skhynix.com, torvalds@linux-foundation.org, damien.lemoal@opensource.wdc.com, linux-ide@vger.kernel.org, adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, mingo@redhat.com, peterz@infradead.org, will@kernel.org, tglx@linutronix.de, rostedt@goodmis.org, joel@joelfernandes.org, sashal@kernel.org, daniel.vetter@ffwll.ch, duyuyang@gmail.com, johannes.berg@intel.com, tj@kernel.org, tytso@mit.edu, willy@infradead.org, david@fromorbit.com, amir73il@gmail.com, gregkh@linuxfoundation.org, kernel-team@lge.com, linux-mm@kvack.org, akpm@linux-foundation.org, mhocko@kernel.org, minchan@kernel.org, hannes@cmpxchg.org, vdavydov.dev@gmail.com, sj@kernel.org, jglisse@redhat.com, dennis@kernel.org, cl@linux.com, penberg@kernel.org, rientjes@google.com, vbabka@suse.cz, ngupta@vflare.org, linux-block@vger.kernel.org, josef@toxicpanda.com, linux-fsdevel@vger.kernel.org, jack@suse.cz, jlayton@kernel.org, dan.j.williams@intel.com, hch@infradead.org, djwong@kernel.org, dri-devel@lists.freedesktop.org, rodrigosiqueiramelo@gmail.com, melissa.srw@gmail.com, hamohammed.sa@gmail.com, harry.yoo@oracle.com, chris.p.wilson@intel.com, gwan-gyeong.mun@intel.com, boqun.feng@gmail.com, longman@redhat.com, yunseong.kim@ericsson.com, ysk@kzalloc.com, yeoreum.yun@arm.com, netdev@vger.kernel.org, matthew.brost@intel.com, her0gyugyu@gmail.com, corbet@lwn.net, catalin.marinas@arm.com, bp@alien8.de, x86@kernel.org, hpa@zytor.com, luto@kernel.org, sumit.semwal@linaro.org, gustavo@padovan.org, christian.koenig@amd.com, andi.shyti@kernel.org, arnd@arndb.de, lorenzo.stoakes@oracle.com, Liam.Howlett@oracle.com, rppt@kernel.org, surenb@google.com, mcgrof@kernel.org, petr.pavlu@suse.com, da.gomez@kernel.org, samitolvanen@google.com, paulmck@kernel.org, frederic@kernel.org, neeraj.upadhyay@kernel.org, joelagnelf@nvidia.com, josh@joshtriplett.org, urezki@gmail.com, mathieu.desnoyers@efficios.com, jiangshanlai@gmail.com, qiang.zhang@linux.dev, juri.lelli@redhat.com, vincent.guittot@linaro.org, dietmar.eggemann@arm.com, bsegall@google.com, mgorman@suse.de, vschneid@redhat.com, chuck.lever@oracle.com, neil@brown.name, okorniev@redhat.com, Dai.Ngo@oracle.com, tom@talpey.com, trondmy@kernel.org, anna@kernel.org, kees@kernel.org, bigeasy@linutronix.de, clrkwllms@kernel.org, mark.rutland@arm.com, ada.coupriediaz@arm.com, kristina.martsenko@arm.com, wangkefeng.wang@huawei.com, broonie@kernel.org, kevin.brodsky@arm.com, dwmw@amazon.co.uk, shakeel.butt@linux.dev, 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, 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 v19 32/40] completion, dept: introduce init_completion_dmap() API Date: Mon, 6 Jul 2026 15:19:20 +0900 Message-Id: <20260706061928.66713-33-byungchul@sk.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20260706061928.66713-1-byungchul@sk.com> References: <20260706061928.66713-1-byungchul@sk.com> X-Brightmail-Tracker: H4sIAAAAAAAAAzWSbUxTZxTH99z73Beq1ZvqxkU+QJqpiFGnYeYkvoS4D141SzSafZi62Yy7 0VKgaRHFaUAU10zQrksRAQ24USstoK1DBOsLClIrs4zNdVAqRFZCKmIUMGWtXavx2y///zm/ nA+HJWVeahGrzCsQtXkKtZyWYMnE3PoVzJZtqk/Gb2aAvqwYfE9GKZie0mOobbHR0PN3KQZP sxXBk2k9grLrUQwRYzcDU6FBBqLObgS2q0cJCN59icA0MkrDpLkcwXjXZogOjRFgHn1DQKQy B86YPAjqR4ZIuNrtR+C0lNLwr+E3EvpH54HLdJKGib5aAgIDTgIqz9kx9AXDBPgqjQRY7Z+D 23Ahll9JhJozxwgwNXUQEDI3MlDT209BeGQ1ROvyYei0CUPzxCMKXP7HFAQDRhqulQwzYP+n K3ZneYAE+9NYcfa8j4YbThcGfWQKQX97LQ1+W5SCkprXFHhuuyn4w+rB0DLmJcBVfQnDYO9p Bh61N1EwMuylwNH7kISZU8ng+amCyswSGh2thGA7b0PCf7NGJJQZYnT32SQpHHccEBrcz2hh dvovWnDO1GHhwQVeuF49xAjHbw4wQp19v+CwpAu/3BgnhIHghu3pX0rWZ4lqZaGoXbVxnyS7 oaWG1jiXHbz3yoBK0GzKjyiB5bkM/oG5mnrPlnoLGWeaW8p7vaG3vJBL5R0VgdiMhCW5/hS+ 3FyB48UCbgcfcuvpOGNuMX/LcIuJs5Rby4eCHeidNIW3Xr79VpQQy5vD54g4y7hP+cHJ+zgu 5TlrAm+6+JB8t5DE37F4sQFJ69AHjUimzCvMVSjVGSuzi/KUB1d+k59rR7F/Mx8J725DLz07 OxHHIvlcKWRuVckoRaGuKLcT8SwpXyhdkrZNJZNmKYoOidr8r7X71aKuEyWzWJ4oXTNzIEvG facoEHNEUSNq37cEm7CoBJ1I3Lvl8ONwX9dTVeS1sdWfduL+z8+LDfOZdVXmw6lbNZkFX+1q qk/evv5D70XXvA68obQqc47uo32XNafGqi79uaOgXN2W+nHr7tycnqQ5m5cmnm0PLG76/ocv lqc1mMP+Xd2RNt/vx/YU+ord3/76GZvauGo4KXmN5oXqTuvJnr6j9zbJsS5bsTqd1OoU/wM3 LlxMawMAAA== X-Brightmail-Tracker: H4sIAAAAAAAAAzWSe0yTZxTGfb9bS13NZ23mFyXBNMFbos5kbGfReElIfC1jmYlhxmik6hcp BSStY7DNCJRix8SUZi3ODxAYVALVYsELkgaCE6doLLAhGbJi0pYRilUskJabrcv+Ofmd5znn yfnjiEnZPXqdWJ1zjtfmqLIUjISSfLVLv40+mJL5SakjAYyGC/DS46VhqKibgpmQkYIqh52B ReGuCIzOX2n440UxBe6bLQg8M0YEc/MCCYaOZQoWzb0iCIVHRGApQrDs6kVg7TeTMOzuIsHe XkTAu9YlBiYfTCOwvPIyUDlRREHQdgnBVb8ggomHB2DK00nD8ug4AS9mAwhs3iUCvN0XESxa NXCtvi26bn3DwPyz5yRUWtwI6l6NkjA9MYagvfcfBK6mYgZ8ptskDHpXwZ8zQQYeW35mYKq/ ioDXrQzUFrto6H86iaBaMCPw/+0iQP+bgwFrtZOCjrH7IuifXCDgpdVMQIszFTw2PwV9pnoi em506tZaECr1RLT8S4DlRicBYVuzaF8jwnOGyxRubrtDYMPAIoPtNXaE5yNmhEONehIbTNH2 QSBI4pK273BjX4DBkZm/GOyaraXwk3oON/wUIXDFs2244+qo6Ov9RyW7T/NZ6jxeu2NPuiSj 0SEwua4t+b+/M6FCFEkoQ3Fijv2Ua6prImPMsJu44eHwB5azG7i2cj9dhiRikh1M4C7ZyqmY sYY9xIX7jEyMKTaR6zJ1iWIsZT/jwpOd6L/QBK6ltftDUFxUv7lQTcRYxiZxI8FHlAlJatGK ZiRX5+Rlq9RZSdt1moyCHHX+9lNns50o+k+28wsV91Bo8EAPYsVI8ZEU9ikzZbQqT1eQ3YM4 MamQSzduTsmUSU+rCr7ntWdPaL/N4nU9aL2YUqyVKr/h02XsGdU5XsPzubz2f5cQx60rRApa flkYvXJkqb205uNZP6xJ+rKqqaLzZPKujVscUCoE7NfcJWXJ1QM1EyWRExtSQoGp8Xi3nFPu zk0vmOaHGn5IfOTD4cOmROtIvFG5em/uyoFC4cfrq1LfejRHeEzqfGS8suEKFUgr/+VzzpcW SNXcrirRH3R+cdwX1B9TULoM1c6tpFaneg9Ns3PXSwMAAA== X-CFilter-Loop: Reflected X-Rspam-User: X-Rspamd-Server: rspam09 X-Rspamd-Queue-Id: 1F6E420006 X-Stat-Signature: kfaoxudg5uqnc6henajokbf8j4jhej7t X-HE-Tag: 1783318857-310272 X-HE-Meta: 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 wYcESAb2 Tjx7xZHs9LBxob8ACk1koEFMACBV25b2DaVlbteVNjkhAettVoxhIAYO0XlnQf2h18OPc7O8V25fe11X4mnoYAXglStGqCL7tLfqokNq9I81oABMj5AsQZXHiADLI3cE0HRcjOe1n8RYZcpjbVTfvVdMBstfbt7trCi114aqoE5Rh7yoX9Ie5VM4UG3MGkFDSRNHyU0wKSdRY+X3LqrI2M9c+7g== 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