| From: |
| Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
| To: |
| linux-kernel@vger.kernel.org, lttng-dev@lists.lttng.org,
rp@svcs.cs.pdx.edu |
| Subject: |
| [RELEASE] Userspace RCU 0.6.9 |
| Date: |
| Wed, 9 Jan 2013 13:39:11 -0500 |
| Message-ID: |
| <20130109183911.GA14358@Krystal> |
| Cc: |
| "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
Lai Jiangshan <laijs@cn.fujitsu.com>,
Stephen Hemminger <shemminger@vyatta.com>,
Alan Stern <stern@rowland.harvard.edu> |
| Archive‑link: | |
Article |
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
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