From patchwork Wed May 8 09:47:01 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Byungchul Park X-Patchwork-Id: 13658399 Received: from invmail4.hynix.com (exvmail4.hynix.com [166.125.252.92]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 4F0BD7E0EB; Wed, 8 May 2024 10:02:59 +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=1715162583; cv=none; b=RiXjqj7Dr0WbENu+J1owW4MARGVRBwS1UaUSmhvR5uCx6eemT+kZKgzT401wvlWZsocareg4iU5byVtdqlO3NSKumNNUFgTAliSfZKxls5bqMaOELo1iVbLKMP6INnvd0HkysK9rQAOPL5L0vKVazst7QWBXu0twlvYoTXZ+PDo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715162583; c=relaxed/simple; bh=ZnDomY68etRURkOftpc7pgxDDdwCW9QdH8k+FPh35/w=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=cAPrh9HMm8DWdSs2tBIzTHDEexUEq24Xmh5b5TThhEbTB1a23ymZ9MuGH7pEiEUg8qxHkWaRFi6G9lLDcTLL+Ju7koEImVzXM2Qa+0xYQeL32We7C8r/Z0qC23nEfVHp9irf1i14XN1xmqT/AcydpBKHdZbfBHvFJ4xfAeKy4uE= 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-d85ff70000001748-55-663b4a39ddb3 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, 42.hyeyoo@gmail.com, chris.p.wilson@intel.com, gwan-gyeong.mun@intel.com, max.byungchul.park@gmail.com, boqun.feng@gmail.com, longman@redhat.com, hdanton@sina.com, her0gyugyu@gmail.com Subject: [PATCH v14 04/28] dept: Add lock dependency tracker APIs Date: Wed, 8 May 2024 18:47:01 +0900 Message-Id: <20240508094726.35754-5-byungchul@sk.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20240508094726.35754-1-byungchul@sk.com> References: <20240508094726.35754-1-byungchul@sk.com> X-Brightmail-Tracker: H4sIAAAAAAAAAzWSa0hTcRjG+//P2TlztDjMyJNRxsAsK9Our92oPughioryS9HlkEc3vCSb l4wCzdllplmkM5OYZlO8pG1FN2dTcXkhW7VKRVeKeMmpYc0yJZtGX15+vO/zPDwfXjEheyzy Fitj4wVVLB8tpySkZGR+4drgvdsiArsqPeHGtUBw/bhCQkFVBQW2B+UIKh6lYhhqDIVPE04E U6/fEKDLsSEo7Okm4JHVgcBcepGC930LwO4ao6A5J4OCtHtVFLwdnsbQlXsTQ7lxP7RmF2Gw TA6QoBui4I4uDbvHIIZJQxkNhhRf6C3Np2G6JwiaHR9FYO5cDbfvdlFQY24mwfq0F8P75wUU OCpmRNBqbSLBdiNTBJWjRRQMTxgIMLjGaHhn0WOo1riDLn3/I4JXmRYMl4ofYrB3vEBQe+UL BmPFRwoaXE4MJmMOAb9LGhH0Zo3QkH5tkoY7qVkIMtJzSdB0bYKpXwXUrmCuwTlGcBpTEmee 0JNcSxHLPcvvpjlNbSfN6Y0JnKnUn7tXM4S5wnGXiDOWXaU44/hNmtOO2DE32tZGc015UyTX Z9fhg95HJdvDhWhloqBat/OURKFxF4sb9Dp735KCUlC5TIs8xCyzkXVZRsj//DN3QDTLFOPH trdPErO8kFnOmjL75/YE45SwxW0hs+zJ7GZrcv7MeUnGl3V8GUSzLGU2sfqZ6/hfpg9bXm2Z y/FgNrMdA6NzGplb8yItn9YiiVszI2YfWlvQP8Nitq60ncxGUj2aV4ZkytjEGF4ZvTFAkRyr PBtw+kyMEbmfyXBh+thTNG47XI8YMZLPl1q8tkbIRHyiOjmmHrFiQr5Q2nh5S4RMGs4nnxNU Z06qEqIFdT1aIiblXtL1E0nhMiaSjxeiBCFOUP2/YrGHdwoKSt8aFh51yKvzm1Z3pDI44GWf vehTCO/Zn6YO6F0a4mdaUbJP0XrqZJD/Kp8ntq/K4yeSTh/20WYcEM6HDPRlf/7qPWj1K67j SxQf4l/XOe3DO+I8arKizJZlRHzH7dCmhoQ9jOBLtYQ1rJCF3U+95djQrele1Pgrck1P/4/I vJVyUq3gg/wJlZr/C/69brJIAwAA X-Brightmail-Tracker: H4sIAAAAAAAAAzWSfUzMcRzHfb+/p+vm7OdkfjLLbszz06Z8yBrN+C0P6x9r8w9Hv6tTd9pd xdlY6YSeKK4j4Qqn1REX5qFrp3QVeqCkqKMW1To16SKl3GX++ey1z+e91z5/vEWE1Ej5iZTq OEGjlsfIaDEp3h2UvBJCgxRrrjs2QFb6GnAPnyEhr8RCQ+PdYgSWB0kY+qq2w/sRF4KxugYC jIZGBPmdHQQ8cDgR2ApP0tDUPQOa3YM01BrSaEi+UULDm/5xDO052RiKrbvg1fkCDPbRHhKM fTRcMSZjz+jFMGouYsCcuAi6CnMZGO9cC7XOFgoqr9ZSYPuwHC5fa6ehzFZLguNxF4amp3k0 OC2TFLxy1JDQmJVBwZ2BAhr6R8wEmN2DDLy1mzDc03tsKT8mKKjOsGNIuXkfQ3PbMwTlZz5j sFpaaKh0uzCUWg0E/L5dhaAr8xsDp9JHGbiSlIkg7VQOCfr2ABj7lUdv3shXugYJXl96hLeN mEj+ZQHHP8ntYHh9+QeGN1nj+dLCZfyNsj7M5w+5Kd5adJbmrUPZDJ/6rRnzA/X1DF9zaYzk u5uNOGzeXvGmCCFGmSBoVgfvF0fpPY/F9s45esueiBJRsTQV+Yg4dh33M6eH8jLNLuZaW0cJ L/uyC7jSjK9Te4J1ibmb9du8PIvdwpUZJkgvk+wizvm5F3lZwgZwpslz+J/Tnyu+Z5/y+LCB XFvPwFRG6sk8S85lziOxCU0rQr5KdYJKrowJWKWNjtKplUdXHTyssiJPXczHx7Meo+Gm7RWI FSHZdEkjHaSQUvIErU5VgTgRIfOVVJ1er5BKIuS6Y4Lm8D5NfIygrUDzRKRsjiQ0XNgvZSPl cUK0IMQKmv9XLPLxS0TzU+Mz2yJ3q3dInoc9igy+tLh17gVX9C+V0+/hurDw6tklNUtXH/z+ 8d2T7ukvst8+HRhO+ap4/V434Y6YDE173rGgLbbhnMJf6W/7w/osXFG+YX3gp5kh9Z2Gh6qK QMnWyiXGL/kndHvs4TmO6iHZiZ2KQ7K6Ax1ESHRCfvBFC4qQykhtlHztMkKjlf8FVpLjJyoD AAA= X-CFilter-Loop: Reflected Precedence: bulk X-Mailing-List: linux-block@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Wrapped the base APIs for easier annotation on typical lock. Signed-off-by: Byungchul Park --- include/linux/dept_ldt.h | 77 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 77 insertions(+) create mode 100644 include/linux/dept_ldt.h diff --git a/include/linux/dept_ldt.h b/include/linux/dept_ldt.h new file mode 100644 index 000000000000..062613e89fc3 --- /dev/null +++ b/include/linux/dept_ldt.h @@ -0,0 +1,77 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Lock Dependency Tracker + * + * Started by Byungchul Park : + * + * Copyright (c) 2020 LG Electronics, Inc., Byungchul Park + */ + +#ifndef __LINUX_DEPT_LDT_H +#define __LINUX_DEPT_LDT_H + +#include + +#ifdef CONFIG_DEPT +#define LDT_EVT_L 1UL +#define LDT_EVT_R 2UL +#define LDT_EVT_W 1UL +#define LDT_EVT_RW (LDT_EVT_R | LDT_EVT_W) +#define LDT_EVT_ALL (LDT_EVT_L | LDT_EVT_RW) + +#define ldt_init(m, k, su, n) dept_map_init(m, k, su, n) +#define ldt_lock(m, sl, t, n, i) \ + do { \ + if (n) \ + dept_ecxt_enter_nokeep(m); \ + else if (t) \ + dept_ecxt_enter(m, LDT_EVT_L, i, "trylock", "unlock", sl);\ + else { \ + dept_wait(m, LDT_EVT_L, i, "lock", sl); \ + dept_ecxt_enter(m, LDT_EVT_L, i, "lock", "unlock", sl);\ + } \ + } while (0) + +#define ldt_rlock(m, sl, t, n, i, q) \ + do { \ + if (n) \ + dept_ecxt_enter_nokeep(m); \ + else if (t) \ + dept_ecxt_enter(m, LDT_EVT_R, i, "read_trylock", "read_unlock", sl);\ + else { \ + dept_wait(m, q ? LDT_EVT_RW : LDT_EVT_W, i, "read_lock", sl);\ + dept_ecxt_enter(m, LDT_EVT_R, i, "read_lock", "read_unlock", sl);\ + } \ + } while (0) + +#define ldt_wlock(m, sl, t, n, i) \ + do { \ + if (n) \ + dept_ecxt_enter_nokeep(m); \ + else if (t) \ + dept_ecxt_enter(m, LDT_EVT_W, i, "write_trylock", "write_unlock", sl);\ + else { \ + dept_wait(m, LDT_EVT_RW, i, "write_lock", sl); \ + dept_ecxt_enter(m, LDT_EVT_W, i, "write_lock", "write_unlock", sl);\ + } \ + } while (0) + +#define ldt_unlock(m, i) dept_ecxt_exit(m, LDT_EVT_ALL, i) + +#define ldt_downgrade(m, i) \ + do { \ + if (dept_ecxt_holding(m, LDT_EVT_W)) \ + dept_map_ecxt_modify(m, LDT_EVT_W, NULL, LDT_EVT_R, i, "downgrade", "read_unlock", -1);\ + } while (0) + +#define ldt_set_class(m, n, k, sl, i) dept_map_ecxt_modify(m, LDT_EVT_ALL, k, 0UL, i, "lock_set_class", "(any)unlock", sl) +#else /* !CONFIG_DEPT */ +#define ldt_init(m, k, su, n) do { (void)(k); } while (0) +#define ldt_lock(m, sl, t, n, i) do { } while (0) +#define ldt_rlock(m, sl, t, n, i, q) do { } while (0) +#define ldt_wlock(m, sl, t, n, i) do { } while (0) +#define ldt_unlock(m, i) do { } while (0) +#define ldt_downgrade(m, i) do { } while (0) +#define ldt_set_class(m, n, k, sl, i) do { } while (0) +#endif +#endif /* __LINUX_DEPT_LDT_H */