From patchwork Wed Jan 24 11:59:15 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Byungchul Park X-Patchwork-Id: 13529098 Received: from invmail4.hynix.com (exvmail4.hynix.com [166.125.252.92]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 4502960DC5; Wed, 24 Jan 2024 11:59:55 +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=1706097602; cv=none; b=HIVPmwgSzZ2+zKGoLEwkXvrHDM0tnKUWtmXUNxMHX3/SrIiKpJC27CN1r3cVuH5Loz4amOVHAtCucWCgJsHlWRDjUhvXV+hrRAiL9dJcHhaVi3P44zd6NLHE9OcQLPwARkytG8ZXafCNMrn6cbE9FCfmzsgt3jHPfv6Vk6Mjmas= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706097602; c=relaxed/simple; bh=ZnDomY68etRURkOftpc7pgxDDdwCW9QdH8k+FPh35/w=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=sQtIAxlx/a1szzowXynbed5Ad+8U07ne5Mii8PiUoVsqWdETMy/YChIX7NlV0CosX33ocBm6ispEXIRR36GwJS4dl3z26UoMw4R6shoAoksqoPi4oH8NonFC6y3Ej3ZuYpmZf8VJRVs2goxcKWLAYbgLZe7Ijqzq6r9iXdc0GY0= 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-d85ff70000001748-82-65b0fbb4b9cc 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, viro@zeniv.linux.org.uk, 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 v11 04/26] dept: Add lock dependency tracker APIs Date: Wed, 24 Jan 2024 20:59:15 +0900 Message-Id: <20240124115938.80132-5-byungchul@sk.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20240124115938.80132-1-byungchul@sk.com> References: <20240124115938.80132-1-byungchul@sk.com> X-Brightmail-Tracker: H4sIAAAAAAAAAzWSa0hTcRjG+5/rtloc1sWjBcVKutEVq5eIMLodCKEoghKqoYccXptpGUQr tzIvpXmZN0Kt1piaaxp4WyxFzUS3ctWyaWZRmVuWtqFOrWn15eUHz8OP58MrwCUNZIBAHnOO V8TIoqSUiBC55pWuf+w18JuKMiSQlb4J3L9SCCiuqqDA+rAcQUXNFQwGWw7AG48TgbfTgoMm 14qg9EMvDjWtfQhMuqsUdH+aDzb3MAXtuWkUJN+touDF0CQGjrzbGJQbQ6AjswwD8/gXAjSD FBRpkjHf+YrBuFZPg1YZCAO6QhomP2yG9r7XJJh61kHBHQcFjaZ2AlprBzDori+moK/iNwkd rc8IsGZlkFD5vYyCIY8WB617mIaX5hIMDCqf6NroNAltGWYMrt17hIHtbQOCJyn9GBgrXlPQ 7HZiUG3MxWHiQQuCgZsuGtTp4zQUXbmJIE2dR4Blqo0ElWMreMeKqeAdXLNzGOdU1ec5k6eE 4J6XsVxdYS/NqZ700FyJMYGr1q3l7jYOYlzpiJvkjPobFGccuU1zqS4bxn3v6qK5Z/legvtk 02CHlpwQ7Qzno+SJvGLjrtOiCJVvXdxXvwv3zUqkROWSVCQUsEwQ+y1liPjP171p+AxTzCrW bh+f5YXMcrY64zOZikQCnLk+l9X96KRmggXMbnYqy4lmmGAC2Zbu97MiMbOVzW77iP5Kl7Hl BvOsSMhsYysLemY7El+nX3+LnpGyTLKQza7V/Fvhzz7V2YlMJC5Bc/RIIo9JjJbJo4I2RCTF yC9sCIuNNiLfS2kvTYbWohHrkSbECJB0njhYX8VLSFlifFJ0E2IFuHSh2O7/kJeIw2VJF3lF 7ClFQhQf34SWCAipn3iL53y4hDkjO8dH8nwcr/ifYgJhgBIdPdjbOm1Vv9u+0ikMK1C6Vw9Y Jppf1ZR5dmlyfoaZL9e9qu2cCs68lLY4dqzj7PDJ56Ia0DS6jSGW7YjdW9cWid/yXzrx0nDY sT/f9N5xPKJ+TWWuSx2aE9I/HWAvVMd2EbZJ/4/HwlyRKUWjCXGj2WM/r+6797Z034pIxaLL e6REfIRs81pcES/7Aya/SYBOAwAA X-Brightmail-Tracker: H4sIAAAAAAAAAzWSa0hTcRjG+//P1dXqsKROFlQrFYosq9VLRrcvHroR9CEqolYdcjlnbHmt YObKcmnOUstLeMkl874JZWoMRW1dLZeZmLekFG9hTbLZZRp9efnB8/Dj+fCyhCyH8mFVmvOi VqNUy2kJKdkfFL+myl0hrmsr2wymG+vA9f0aCdnlJTS0lBUjKKmKwzDYGAzvJ4YRuF++JiAj rQVBXu9HAqqauhDUFV2mobV/LjhdYzQ40ow0xBeU0/BmaApDZ3oqhmLrPnieko/BPvmFhIxB GrIy4rHnDGCYNFsYMOt9oa8ok4Gp3kBwdLVR0JDjoKCuYzXcvddJQ22dg4SmR30YWh9n09BV 8oeC501PSWgxJVFQOppPw9CEmQCza4yBt/ZcDBUGj+3qt98UNCfZMVy9X4nB+aEGwZNrPRis JW00NLiGMdisaQT8fNCIoC95hIErNyYZyIpLRmC8kk7C61/NFBg6FeD+kU3vCBIahscIwWCL EuomcknhWT4vVGd+ZATDkw5GyLVGCLaiVUJB7SAW8sZdlGC1XKcF63gqIySOOLEw+uoVIzy9 4yaFfmcGPrDkiGTraVGtihS1a7edkIQYPOvODSyMLrTrkR4VyxKRF8tzG/kEt5GYZprz59vb J2fYm1vG25I+U4lIwhJcwmy+6OtLejqYz+3kf5mG0TSTnC/f2NpNTrOUU/C3mj+hf9KlfHGF fUbkxW3iS+92zHRknk6P5SaTgiS5aJYFeas0kWFKlVoRoAsNidGoogNOhYdZkedpzJemTI/Q 99bgesSxSD5HusNSLsooZaQuJqwe8Swh95a2LyoTZdLTyphYURt+XBuhFnX1aDFLyhdKdx8S T8i4M8rzYqgonhO1/1PMevno0UnjhmOBqpDy5Tma0abIhoB36akG27fseVOVK2oc1Q+To6pc g2xn7Elb5vqgFt+BlWce+k8sGM3Uz4/oTjk8vr1acXDkaPOCdzU3w26rw5dnbSk0bdyTJYsa 69r7Is7v64WLBfA+QhF6K6EWGzXBvs6E6AeNu9hY/yNnL/ttSfZLPysndSHKwFWEVqf8CxVQ taswAwAA 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 */