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 X-Spam-Level: X-Spam-Status: No, score=-9.1 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3BD9BC433E2 for ; Mon, 20 Jul 2020 15:55:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 193532065E for ; Mon, 20 Jul 2020 15:55:44 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="cm5VzJaz"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="ZAFWlyQo" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731715AbgGTPzn (ORCPT ); Mon, 20 Jul 2020 11:55:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41396 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730669AbgGTPzd (ORCPT ); Mon, 20 Jul 2020 11:55:33 -0400 Received: from galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5E0D9C061794; Mon, 20 Jul 2020 08:55:33 -0700 (PDT) From: "Ahmed S. Darwish" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1595260531; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=2jbWthf/sjZFiaxrDbdSXd7IDu0n+zAeGRM5n6XQ12Q=; b=cm5VzJaz5qrAkoZitAhzUZDycS7yfhS15HX/+qK23ajutc5u5UwdCxFcqwQzLus/vh7EWX UyDw/ZPHkHN0liJK3lBqbLf/i9L+sWnoSe6WIs1Gwx0jp3TkBs4IYDOE1YG7MPnC878s3w miPatgXK3fxnduOAlyFX1rDdxV+nxkYn47JxWpPmVWWwd7Glvmu7qAv3Wyil3jAmMaDY0v t9TgnD9Echr0UPz3HIcpF4TyuPgtaatVtc/2O94aTqnAy7T4WnHmjJF6O1OnQ9sedFqgKE SgF9i7DxWT0Af0lsIBTlGl05ZNKEBKMpJB1XK2TR2FaerXgz/IbL3NL1yn2O4g== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1595260531; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=2jbWthf/sjZFiaxrDbdSXd7IDu0n+zAeGRM5n6XQ12Q=; b=ZAFWlyQoaZ+tWxi7yUUbv462J9muSHDnco6CRcWa+luXz/lRxaZdbaNGE+wDp+0kF4FYvu h9M+wZzjsYe0YpDw== To: Peter Zijlstra , Ingo Molnar , Will Deacon Cc: Thomas Gleixner , "Paul E. McKenney" , "Sebastian A. Siewior" , Steven Rostedt , LKML , "Ahmed S. Darwish" , Jonathan Corbet , linux-doc@vger.kernel.org, "David S. Miller" , netdev@vger.kernel.org, Alexander Viro , linux-fsdevel@vger.kernel.org Subject: [PATCH v4 00/24] seqlock: Extend seqcount API with associated locks Date: Mon, 20 Jul 2020 17:55:06 +0200 Message-Id: <20200720155530.1173732-1-a.darwish@linutronix.de> In-Reply-To: <20200519214547.352050-1-a.darwish@linutronix.de> References: <20200519214547.352050-1-a.darwish@linutronix.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, This is v4 of the seqlock patch series: [PATCH v1 00/25] https://lore.kernel.org/lkml/20200519214547.352050-1-a.darwish@linutronix.de [PATCH v2 00/06] (bugfixes-only, merged) https://lore.kernel.org/lkml/20200603144949.1122421-1-a.darwish@linutronix.de [PATCH v2 00/18] https://lore.kernel.org/lkml/20200608005729.1874024-1-a.darwish@linutronix.de [PATCH v3 00/20] https://lore.kernel.org/lkml/20200630054452.3675847-1-a.darwish@linutronix.de It is based over: git://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git :: locking/core Changelog ========= - Unconditionally use C11 _Generic() expressions for seqcount_locktype_t switching. Thanks to Peter, pushing for 6ec4476ac825 ("Raise gcc version requirement to 4.9"). - Compress the new seqcount_locktype_t code code by using generative macros, as suggested by Peter here: https://lkml.kernel.org/r/20200708122938.GQ4800@hirez.programming.kicks-ass.net Keep *all* functions that are to be invoked by call-sites out of such generative macros though. This simplifies the generative macros code, and (more importantly) make the newly exported seqlock.h API explicit. - Make all documentation "RST-lite", for better readability from text editors. - Add additional clean-ups at the start of the series for better overall readability of seqlock.h code, and for future extensibility. Thanks, 8<-------------- Ahmed S. Darwish (24): Documentation: locking: Describe seqlock design and usage seqlock: Properly format kernel-doc code samples seqlock: seqcount_t latch: End read sections with read_seqcount_retry() seqlock: Reorder seqcount_t and seqlock_t API definitions seqlock: Add kernel-doc for seqcount_t and seqlock_t APIs seqlock: Implement raw_seqcount_begin() in terms of raw_read_seqcount() lockdep: Add preemption enabled/disabled assertion APIs seqlock: lockdep assert non-preemptibility on seqcount_t write seqlock: Extend seqcount API with associated locks seqlock: Align multi-line macros newline escapes at 72 columns dma-buf: Remove custom seqcount lockdep class key dma-buf: Use sequence counter with associated wound/wait mutex sched: tasks: Use sequence counter with associated spinlock netfilter: conntrack: Use sequence counter with associated spinlock netfilter: nft_set_rbtree: Use sequence counter with associated rwlock xfrm: policy: Use sequence counters with associated lock timekeeping: Use sequence counter with associated raw spinlock vfs: Use sequence counter with associated spinlock raid5: Use sequence counter with associated spinlock iocost: Use sequence counter with associated spinlock NFSv4: Use sequence counter with associated spinlock userfaultfd: Use sequence counter with associated spinlock kvm/eventfd: Use sequence counter with associated spinlock hrtimer: Use sequence counter with associated raw spinlock Documentation/locking/index.rst | 1 + Documentation/locking/seqlock.rst | 222 ++++ block/blk-iocost.c | 5 +- drivers/dma-buf/dma-resv.c | 15 +- .../gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c | 2 - drivers/md/raid5.c | 2 +- drivers/md/raid5.h | 2 +- fs/dcache.c | 2 +- fs/fs_struct.c | 4 +- fs/nfs/nfs4_fs.h | 2 +- fs/nfs/nfs4state.c | 2 +- fs/userfaultfd.c | 4 +- include/linux/dcache.h | 2 +- include/linux/dma-resv.h | 4 +- include/linux/fs_struct.h | 2 +- include/linux/hrtimer.h | 2 +- include/linux/kvm_irqfd.h | 2 +- include/linux/lockdep.h | 19 + include/linux/sched.h | 2 +- include/linux/seqlock.h | 1139 +++++++++++++---- include/net/netfilter/nf_conntrack.h | 2 +- init/init_task.c | 3 +- kernel/fork.c | 2 +- kernel/time/hrtimer.c | 13 +- kernel/time/timekeeping.c | 19 +- lib/Kconfig.debug | 1 + net/netfilter/nf_conntrack_core.c | 5 +- net/netfilter/nft_set_rbtree.c | 4 +- net/xfrm/xfrm_policy.c | 10 +- virt/kvm/eventfd.c | 2 +- 30 files changed, 1173 insertions(+), 323 deletions(-) create mode 100644 Documentation/locking/seqlock.rst base-commit: a9232dc5607dbada801f2fe83ea307cda762969a -- 2.20.1