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=-2.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=no 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 E4FF5C433DF for ; Wed, 24 Jun 2020 20:12:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CB1112082F for ; Wed, 24 Jun 2020 20:12:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1593029526; bh=Ud+RpLMV4dWOyKjdxATNiBtJWY31iUXVLUKQ0Pw1OEs=; h=Date:From:To:Cc:Subject:Reply-To:List-ID:From; b=ZS40SiXgYh/WIpNoU3Tg0zeYMlmyqnkxZiJx/St0ps9h3Vve/J+V+EPFq5DjQ3S18 XEf66TPu2ONgq41T4pAPoqCDtSeqvYzcQpd2sgzGcuADHTavxdtcds8N1n07KWHtoJ raj5I3jN3SGTiDzN/rjpRSNWtGTvbNoSTUUZDp6M= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2406340AbgFXUMC (ORCPT ); Wed, 24 Jun 2020 16:12:02 -0400 Received: from mail.kernel.org ([198.145.29.99]:52182 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2406231AbgFXUMB (ORCPT ); Wed, 24 Jun 2020 16:12:01 -0400 Received: from paulmck-ThinkPad-P72.home (50-39-105-78.bvtn.or.frontiernet.net [50.39.105.78]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id C479E2081A; Wed, 24 Jun 2020 20:12:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1593029520; bh=Ud+RpLMV4dWOyKjdxATNiBtJWY31iUXVLUKQ0Pw1OEs=; h=Date:From:To:Cc:Subject:Reply-To:From; b=Sn8K7bJI2A2bReHxyKOVrn40YgYXvT6VRe4UiqcQ8SuYRzjDU6jCotK4fb0cmghkE iEpCpHtGTVnfLJNGkMM97h32Kll7pdcMi5nausdVV3hF1iT7HsxoHZSAF9OKHVbG28 bA+GJroXFubeCOb1DuR1OTdBkNFJ/FWcqh0PZetQ= Received: by paulmck-ThinkPad-P72.home (Postfix, from userid 1000) id AF09435228BC; Wed, 24 Jun 2020 13:12:00 -0700 (PDT) Date: Wed, 24 Jun 2020 13:12:00 -0700 From: "Paul E. McKenney" To: rcu@vger.kernel.org Cc: linux-kernel@vger.kernel.org, kernel-team@fb.com, mingo@kernel.org, jiangshanlai@gmail.com, dipankar@in.ibm.com, akpm@linux-foundation.org, mathieu.desnoyers@efficios.com, josh@joshtriplett.org, tglx@linutronix.de, peterz@infradead.org, rostedt@goodmis.org, dhowells@redhat.com, edumazet@google.com, fweisbec@gmail.com, oleg@redhat.com, joel@joelfernandes.org Subject: [PATCH tip/core/rcu 0/17] kfree_rcu updates for v5.9 Message-ID: <20200624201200.GA28901@paulmck-ThinkPad-P72> Reply-To: paulmck@kernel.org MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.9.4 (2018-02-28) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello! This series contains kfree_rcu() updates. Unless otherwise noted, these are all courtesy of Uladzislau Rezki. 1. Fix a kernel-doc warnings for "count", courtesy of Mauro Carvalho Chehab. 2. rcu/tree: Keep kfree_rcu() awake during lock contention, courtesy of Joel Fernandes. 3. rcu/tree: Skip entry into the page allocator for PREEMPT_RT, courtesy of Joel Fernandes. 4. rcu/tree: Repeat the monitor if any free channel is busy. 5. rcu/tree: Make debug_objects logic independent of rcu_head, courtesy of Joel Fernandes. 6. rcu/tree: Simplify KFREE_BULK_MAX_ENTR macro. 7. rcu/tree: Move kfree_rcu_cpu locking/unlocking to separate functions. 8. rcu/tree: Use static initializer for krc.lock, courtesy of Sebastian Andrzej Siewior. 9. rcu/tree: cache specified number of objects. 10. rcu/tree: Maintain separate array for vmalloc ptrs. 11. rcu/tiny: support vmalloc in tiny-RCU. 12. Rename *_kfree_callback/*_kfree_rcu_offset/kfree_call_*. 13. mm/list_lru.c: Rename kvfree_rcu() to local variant. 14. Introduce 2 arg kvfree_rcu() interface. 15. Support reclaim for head-less object. 16. Introduce single argument kvfree_rcu() interface. 17. lib/test_vmalloc.c: Add test cases for kvfree_rcu(). Thanx, Paul ------------------------------------------------------------------------ Documentation/admin-guide/kernel-parameters.txt | 8 include/linux/rcupdate.h | 61 ++- include/linux/rcutiny.h | 20 - include/linux/rcutree.h | 2 include/trace/events/rcu.h | 8 kernel/rcu/tiny.c | 7 kernel/rcu/tree.c | 443 ++++++++++++++++-------- lib/test_vmalloc.c | 103 +++++ mm/list_lru.c | 6 9 files changed, 481 insertions(+), 177 deletions(-)