From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mathieu Desnoyers Subject: [RELEASE] Userspace RCU 0.6.9 Date: Wed, 9 Jan 2013 13:39:11 -0500 Message-ID: <20130109183911.GA14358@Krystal> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org To: linux-kernel@vger.kernel.org, lttng-dev@lists.lttng.org, rp@svcs.cs.pdx.edu Cc: "Paul E. McKenney" , Lai Jiangshan , Stephen Hemminger , Alan Stern List-Id: lttng-dev@lists.lttng.org liburcu is a LGPLv2.1 userspace RCU (read-copy-update) library. This data synchronization library provides read-side access which scales linearly with the number of cores. It does so by allowing multiples copies of a given data structure to live at the same time, and by monitoring the data structure accesses to detect grace periods after which memory reclamation is possible. This is a bugfix release for the stable-0.6 series of the Userspace RCU library. It fixes a hang in use-case where call_rcu is used in a parent process that performs a fork(), without following exec(), and then continues to use call_rcu or synchronize_rcu. Changelog: 2013-01-09 Userspace RCU 0.6.9 * API cleanup: use "uatomic_*" in cmm_smp_mb__ API * uatomic: add memory barrier API for and/or/add/sub/inc/sub * Fix uatomic sign cast * Discourage use of pthread_atfork() for call_rcu handlers * Fix call_rcu fork handling * test: fork handling Project website: http://lttng.org/urcu Download link: http://lttng.org/files/urcu/ -- Mathieu Desnoyers Operating System Efficiency R&D Consultant EfficiOS Inc. http://www.efficios.com