From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Date: Mon, 16 Sep 2013 16:10:04 +0000 (-0500)
Subject: Blacklist Linux kernels 3.10+
X-Git-Tag: v2.4.0-rc1~16
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=fc8216ae9ec5d18172d8227d179475e7cc1fb45c;p=lttng-modules.git

Blacklist Linux kernels 3.10+

Linux kernels 3.10 and 3.11 introduce a deadlock in the timekeeping
subsystem. See
http://lkml.kernel.org/r/1378943457-27314-1-git-send-email-john.stultz@linaro.org
for details. Awaiting patch merge into Linux master, stable-3.10 and
stable-3.11 for fine-grained kernel version blacklisting.

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

diff --git a/wrapper/trace-clock.h b/wrapper/trace-clock.h
index bced61c2..4266f256 100644
--- a/wrapper/trace-clock.h
+++ b/wrapper/trace-clock.h
@@ -32,8 +32,13 @@
 #include <linux/ktime.h>
 #include <linux/time.h>
 #include <linux/hrtimer.h>
+#include <linux/version.h>
 #include "random.h"
 
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,10,0))
+#error "Linux kernels 3.10 and 3.11 introduce a deadlock in the timekeeping subsystem. See http://lkml.kernel.org/r/1378943457-27314-1-git-send-email-john.stultz@linaro.org for details. Awaiting patch merge into Linux master, stable-3.10 and stable-3.11 for fine-grained kernel version blacklisting."
+#endif
+
 static inline u64 trace_clock_monotonic_wrapper(void)
 {
 	ktime_t ktime;