From nobody Wed Dec 17 17:45:11 2025 Received: from invmail4.hynix.com (exvmail4.skhynix.com [166.125.252.92]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 96C973009F1; Fri, 5 Dec 2025 07:19:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=166.125.252.92 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764919181; cv=none; b=SBakHnOwD5pA796C0uDhjXH7yl7H57u878NAwGlMNoKC3cIFOYanFDjJftSOOqcvdetV4P55jJAbYQ9625wm/CxmOkumyC6cf94djeU4Xh5YgCUGbP3C2cdXWelcv3vfTTcOltC3y09zSjl5ULMzZByGOb80wskcUCuY7SjSwWw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764919181; c=relaxed/simple; bh=mVczWw5AJvTGaUa2k+kGuAdITLqzYAqLiO2CNQ+CNGE=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=H3kqhV290w052K0WyqE25v6md7nI6PfdDzqrU5QPD+H+07nHG9qgsoIaJgfd0E0Ny0Qv6R+Ocllxn11LRzEYbbenJEjICplPeZOOI/xjcsTPByFRfqqKX/T7b3duqXzYxl6qwrKwzdcsJVBIU5cZu6o/cRiSfXql0cLWWNgPdoY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=sk.com; spf=pass smtp.mailfrom=sk.com; arc=none smtp.client-ip=166.125.252.92 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=sk.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=sk.com X-AuditID: a67dfc5b-c45ff70000001609-25-6932876cc6fb From: Byungchul Park To: linux-kernel@vger.kernel.org Cc: 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, max.byungchul.park@gmail.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 v18 10/42] dept: apply sdt_might_sleep_{start,end}() to wait_for_completion()/complete() Date: Fri, 5 Dec 2025 16:18:23 +0900 Message-Id: <20251205071855.72743-11-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: H4sIAAAAAAAAAzWSa0hTcRiH+5/7RpPTup3ygzGKILCaWLxE96LOl8DqWwU29KTDaTIvZVB5 SbyV1mhFnizTXOpOGbMwV0tbNJKSZra2LmYz08qVYDpxc9lc9O15fz/e5/3yMrjyE7mU0WZk C/oMjU5FyQn5z7l1seklcdq1DW3R8LF/kIS3BZ0EXG2RKAiJbTSUWq6Q8NxdSIDzjhlB/0Qp gsmgiENx+wwBIYODhhmbA4HH2YGDdK8Ag5GnYwiM3kEKLn8vIGDUdBZB9ZBIw8/+hyS4/T4E psE/GIQupcH1ulYKgt2vcLjh7cPB1lhIwZuJUQq6jBUU/LpLQW2hjYSelyMIakQDgqH3NgyK 6lsoaP9spcFs2RO+QoF4+RsGxtsPMZgyNdMgdveSMNBYTcO0Vw0O8zANfVVGAizvniEYf+PF QDo7hEOpdSKcfXlLwiNbFwGloXEEjgcDGPRar1LwSZohIV+cJKFl2INBV3UTAR+6q2h4Zb1N QoO7BwPvZw8J/srorcl88esQxUvXJMQHAwbEjzcU4Xzx+fD41DeK84EJF8Xb/LUEf7MsgPEX umP59uo+mj/z+D3N11py+PpH3zHe0lxG8ZYxA52w6oB8Y7Kg0+YK+jWbD8tTg/ZyLNM27/g3 lxPlo9aociRjODaeK3sxQP/nCqtIzjLFruQ8nil8lhewy7jWc0PhXM7gbG8MVzJVGSnms6nc E9sHapYJdgU3IlZGRAp2PecO/MD/SWM4893OCMvCudEdiLCSXcddL5+MSDm2XsYV2avQv4Ul 3JNGD3EeKWrRnGak1Gbkpmu0uvjVqXkZ2uOrk46mW1D460wnpw8+QGPO/XbEMkg1V9F5TK1V kprcrLx0O+IYXLVA4dOt1SoVyZq8E4L+aKI+Rydk2VE0Q6gWK+L8x5KVbIomW0gThExB/7/F GNnSfBTrujWMFu5zHCE2HX7e4dsZ9Espdet27zaJPunC/fKuva6YHVHbEtOazb3bE5eNdRiy ZdEbmrZsP1fhMsdyCcWK05nzS56ZatTxPTmu6U3xnc6or3UDNbukg/U31BebflcuYmT72OyF 04e+npqZnNOXlJDS5nFVGTcnLY/bW5T2R0VkpWrUq3B9luYvacPVVnEDAAA= X-Brightmail-Tracker: H4sIAAAAAAAAAzWSe0xScRTH+917uSALu5Krm9UstlYrH9lrp8d6/OXtYfVPq9UfRXWXJKiD Qm290EjT8sEGrvBdslQqk8qosYiW056YGWaZYkSamD18DJQMbf1z9jnf7znfnT8ODxfe54Tx JInHWHmiWCoi+QR/+9qMSGnmMsnSRmcUZKnPwMdOFwfeqawEDA1mEVB0y0iCX1/Phay6yxxo dKQTYL9Zg6BzKAvByKgeB7V5nAC/poELg94PXNCqEIxbGhDomjU4tNkf4WC8o8Lgd+0fEvqe /EKgdbpIKOxVETBguIjgilvPhd6nsdDf+ZAD4x1fMXAMexAYXH8wcFkzEfh1CVBaYQqs636Q MPryNQ6FWjuCcmcHDr96uxDcafiEwHI9nYQv+XdxaHEFw9uhARKatDkk9DcXYfC9loSydAsH ml/0ISjWaxC42y0YZFy9RYKuuI4Ac9cDLjT3jWHwUafBoKYuDjoNbgKe51dggXMDU7dngr4w AwuUHgy0Nx5i4DVUczdWImZEnUsw1aZ7GKN+4ycZY4kRMaM+DWIGKzNwRp0faJ94BnDmnCmF qXzuIRnfUCvJWIbLCOZZBc1cu+DDmIKXkYz5Sgd356a9/HWHWalEycqj1x/gx4/asrFkS0hq T6sdnUWm4GwUxKOpFXTOAz1ngklqId3W5sUnOJSaR5suuQM6n4dTLeF0pjd30phOxdOPLR/I CSaoBXSfPpc7wQJqFe3wfcP/hYbTNbXWSQ4K6FqHb5KF1Eq6NHuEk4/4ZWhKNQqVJCplYol0 ZZQiIT4tUZIadShJVocC/2Q4NVZwHw22xNoQxUOiqQJrSoxEyBErFWkyG6J5uChU4JEulQgF h8VpJ1h50n75cSmrsKHZPEI0U7BlN3tASB0RH2MTWDaZlf93MV5Q2Fl0dEl9knqOLa87aVrB Dr45TzVPtpgWtRelaPrfl3itqze01+oiTz7euk8Ys2bLdQ9efFqaXL8rr7DE6WvtXu8OyUzV fQ6PcLzSh8maFjl75nYFn/fPj6iyW29vi3Ziyu6D0dde7YlLL1HOmHW8a/mijhkVm29GTHeZ q4psQeU/jWtFhCJeHLMYlyvEfwHk5RxMSwMAAA== 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" Make dept able to track dependencies by wait_for_completion()/complete(). Signed-off-by: Byungchul Park --- include/linux/completion.h | 30 +++++++++++++++++++++++++----- 1 file changed, 25 insertions(+), 5 deletions(-) diff --git a/include/linux/completion.h b/include/linux/completion.h index fb2915676574..bd2c207481d6 100644 --- a/include/linux/completion.h +++ b/include/linux/completion.h @@ -10,6 +10,7 @@ */ =20 #include +#include =20 /* * struct completion - structure used to maintain state for a "completion" @@ -26,14 +27,33 @@ struct completion { unsigned int done; struct swait_queue_head wait; + struct dept_map dmap; }; =20 +#define init_completion(x) \ +do { \ + sdt_map_init(&(x)->dmap); \ + __init_completion(x); \ +} while (0) + +/* + * XXX: No use cases for now. Fill the body when needed. + */ #define init_completion_map(x, m) init_completion(x) -static inline void complete_acquire(struct completion *x) {} -static inline void complete_release(struct completion *x) {} + +static inline void complete_acquire(struct completion *x) +{ + sdt_might_sleep_start(&x->dmap); +} + +static inline void complete_release(struct completion *x) +{ + sdt_might_sleep_end(); +} =20 #define COMPLETION_INITIALIZER(work) \ - { 0, __SWAIT_QUEUE_HEAD_INITIALIZER((work).wait) } + { 0, __SWAIT_QUEUE_HEAD_INITIALIZER((work).wait), \ + .dmap =3D DEPT_MAP_INITIALIZER(work, NULL), } =20 #define COMPLETION_INITIALIZER_ONSTACK_MAP(work, map) \ (*({ init_completion_map(&(work), &(map)); &(work); })) @@ -75,13 +95,13 @@ static inline void complete_release(struct completion *= x) {} #endif =20 /** - * init_completion - Initialize a dynamically allocated completion + * __init_completion - Initialize a dynamically allocated completion * @x: pointer to completion structure that is to be initialized * * This inline function will initialize a dynamically created completion * structure. */ -static inline void init_completion(struct completion *x) +static inline void __init_completion(struct completion *x) { x->done =3D 0; init_swait_queue_head(&x->wait); --=20 2.17.1