From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Date: Wed, 13 Dec 2017 18:40:42 +0000 (-0500)
Subject: Fix: Don't nest get online cpus
X-Git-Tag: v2.11.0-rc1~96
X-Git-Url: http://git.lttng.org./?a=commitdiff_plain;ds=sidebyside;h=f78cce4bcb07f2e98c6a1f6fd15af12819bbd5c7;hp=f78cce4bcb07f2e98c6a1f6fd15af12819bbd5c7;p=lttng-modules.git

Fix: Don't nest get online cpus

Since the cpu hotplug refactoring in the Linux kernel, CPU hotplug
"online cpus" read lock cannot be nested anymore.

Fix this by disabling preemption around the section instead.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
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