From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Date: Thu, 6 Aug 2015 22:02:21 +0000 (-0400)
Subject: Fix: take RCU read-side lock within hash table functions
X-Git-Tag: v2.8.0-rc1~481
X-Git-Url: https://git.lttng.org/?a=commitdiff_plain;h=42ce408ec43c984731b2cdb4a4dbbbb0196164b0;hp=42ce408ec43c984731b2cdb4a4dbbbb0196164b0;p=lttng-tools.git

Fix: take RCU read-side lock within hash table functions

After review, a great deal of caller sites miss the RCU read-side lock
when using the hash table modification functions. This is a case where
having a slight performance degradation might be worthwhile if we can be
a bit more stability. So instead of playing whack-a-mole, add the RCU
read-side lock in the hash table modification functions to ensure
protection from ABA.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
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