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=-19.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham 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 9FEC7C43460 for ; Thu, 8 Apr 2021 22:39:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7AD5D61168 for ; Thu, 8 Apr 2021 22:39:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232807AbhDHWjU (ORCPT ); Thu, 8 Apr 2021 18:39:20 -0400 Received: from mail.kernel.org ([198.145.29.99]:48056 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232265AbhDHWjT (ORCPT ); Thu, 8 Apr 2021 18:39:19 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id E52FE61159; Thu, 8 Apr 2021 22:39:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1617921547; bh=icfb0cOZJw/ZYwhixn2emBhXKyyyLN9A85mxaGxW8W0=; h=From:To:Cc:Subject:Date:From; b=EMBUrJya0fJBxbVEH5D3mPfriQ9dDT7k9ips2tuXnTD2iIPW3HUhQ4LUlzquiM127 fzqTbMAXF1Ub0C3WpzjbN78viFbKmPLaJZzO5BiDpBOdjTr8BfstAGrgt0R+Cxb96t 7jEvUF/1SZRB0n1Wql51UYo0+JuaXYO8ZGmNx7isl6O0jbqHE0y/O6P0JJqMrqMLll oNic2WU2M30xbozKGl7EZBSb+4fz2tc/mzbZbFEQtNuoXzgFUk/3ErOR40t3jGQn3O DPi/SINIx57dZosJv16Hsrp+zf5TmZmbtSYFerMijoBgwUvnLFkNgPn2WB44eTUicp ZC1nZCumYDJHA== From: Frederic Weisbecker To: "Paul E . McKenney" Cc: LKML , Frederic Weisbecker , Uladzislau Rezki , Boqun Feng , Lai Jiangshan , Neeraj Upadhyay , Josh Triplett , Joel Fernandes Subject: [PATCH 0/5] srcu: Fix boot stall v2 Date: Fri, 9 Apr 2021 00:38:57 +0200 Message-Id: <20210408223902.6405-1-frederic@kernel.org> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org So here is a different approach to solve the early SRCU issue. Early initialized ssp's are reset on srcu_init() and their callbacks get requeued. I expanded testing in the last patch. git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks.git rcu/dev HEAD: 0dc3551822c74a0f34783cbd64a9199c9758ec6d Thanks, Frederic --- Frederic Weisbecker (5): srcu: Unconditionally embed struct lockdep_map srcu: Initialize SRCU after timers srcu: Fix broken node geometry after early ssp init srcu: Queue a callback in case of early started poll srcu: Early test SRCU polling start include/linux/srcu.h | 6 +++ include/linux/srcutree.h | 4 +- init/main.c | 2 + kernel/rcu/rcu.h | 6 --- kernel/rcu/srcutree.c | 119 ++++++++++++++++++++++++++++++++++++++++++----- kernel/rcu/tiny.c | 1 - kernel/rcu/tree.c | 1 - kernel/rcu/update.c | 12 ++++- 8 files changed, 129 insertions(+), 22 deletions(-)