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]) by smtp.lore.kernel.org (Postfix) with ESMTP id 61CB8C05027 for ; Fri, 27 Jan 2023 01:19:46 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 733EA6B0072; Thu, 26 Jan 2023 20:19:45 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 612286B0078; Thu, 26 Jan 2023 20:19:45 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 48C478E0001; Thu, 26 Jan 2023 20:19:45 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0016.hostedemail.com [216.40.44.16]) by kanga.kvack.org (Postfix) with ESMTP id 340256B0071 for ; Thu, 26 Jan 2023 20:19:45 -0500 (EST) Received: from smtpin16.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay08.hostedemail.com (Postfix) with ESMTP id EF1DA140762 for ; Fri, 27 Jan 2023 01:19:44 +0000 (UTC) X-FDA: 80398821888.16.CC39480 Received: from lgeamrelo11.lge.com (lgeamrelo13.lge.com [156.147.23.53]) by imf14.hostedemail.com (Postfix) with ESMTP id AD09E100015 for ; Fri, 27 Jan 2023 01:19:42 +0000 (UTC) Authentication-Results: imf14.hostedemail.com; dkim=none; spf=softfail (imf14.hostedemail.com: 156.147.23.53 is neither permitted nor denied by domain of max.byungchul.park@gmail.com) smtp.mailfrom=max.byungchul.park@gmail.com; dmarc=fail reason="No valid SPF, No valid DKIM" header.from=gmail.com (policy=none) ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1674782383; 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=QUPYVXukvkhJQyvCaOVez+3E4bKK4emd7/QpFX7Le/Y=; b=tlZ4E56KQ46+VCwlmMNQ4Z0h/OdeSotgrCMU5XI6P0D5BMhjEP2KosVIZJaxoqQGDVvqED pAfjmmYozyZZWQvbqNqDiB3UHp+TIYDY6gICjnBnDf1qPCQDzjKjWDGY2u16SsbiUrQtgh nkOaCw7tuj+lzg4koxi4Mg/nQGvZyhM= ARC-Authentication-Results: i=1; imf14.hostedemail.com; dkim=none; spf=softfail (imf14.hostedemail.com: 156.147.23.53 is neither permitted nor denied by domain of max.byungchul.park@gmail.com) smtp.mailfrom=max.byungchul.park@gmail.com; dmarc=fail reason="No valid SPF, No valid DKIM" header.from=gmail.com (policy=none) ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1674782383; a=rsa-sha256; cv=none; b=JGa4gtfS0AXwSRhSRV4xTSe8HYMqaarA8sYmdyR0FsOpnRmlSh+BM9dEI7utfwfzBI30wN fdvOCMaRO4yyr6v80IjDeGis6NmqNFFemZ3u/xMSbSWQhaCsUVdUaRqears+WKmJf3yHek +0HwjGbw3RVPgwbro9EvgN3NOZWUt4Y= Received: from unknown (HELO lgemrelse7q.lge.com) (156.147.1.151) by 156.147.23.53 with ESMTP; 27 Jan 2023 10:19:41 +0900 X-Original-SENDERIP: 156.147.1.151 X-Original-MAILFROM: max.byungchul.park@gmail.com Received: from unknown (HELO localhost.localdomain) (10.177.244.38) by 156.147.1.151 with ESMTP; 27 Jan 2023 10:19:40 +0900 X-Original-SENDERIP: 10.177.244.38 X-Original-MAILFROM: max.byungchul.park@gmail.com From: Byungchul Park To: linux-kernel@vger.kernel.org Cc: 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, paolo.valente@linaro.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 Subject: [PATCH v8 04/25] dept: Add lock dependency tracker APIs Date: Fri, 27 Jan 2023 10:18:57 +0900 Message-Id: <1674782358-25542-5-git-send-email-max.byungchul.park@gmail.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1674782358-25542-1-git-send-email-max.byungchul.park@gmail.com> References: <1674782358-25542-1-git-send-email-max.byungchul.park@gmail.com> X-Stat-Signature: a895p9d1cep7od6jod5r7dseq9w6maaj X-Rspam-User: X-Rspamd-Queue-Id: AD09E100015 X-Rspamd-Server: rspam06 X-HE-Tag: 1674782382-949781 X-HE-Meta: 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 a4oYt9JM T2SebLkwViB6eyKuS4vqAnqjLVHjLwSH7Hc8xzAHEGa3a+HAVuvDHUNl6nED+AKmhTkHIPSLgNEtx6HouRBSZxFkXQhmkhHYPEzYRoTubz9KKlM2DbOiX3F8rgGNE18br5RDxO7k38hBBW/D2isfiBV6IL6dUQHw4ho3Jx5Xy1EPjXCBXuURKDpB/8/HRUfXuWc3Nx2wRafpHflnNem4tNWRFqxJFzkkTSoqlOCIzYJeVu05Be6/95yVCk5U8k6pynZmreVtH+Lh8OszLX38bWwNfBuCYpMrnECMP2j4Zo8K4+Cxp2h9QUhtnLg== 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: 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 00000000..062613e --- /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 */ -- 1.9.1