commit d3a73e2f074fa6c9cc11da0aee494a5eae92392d
Author: Julien Desfossez <jdesfossez@efficios.com>
Date:   Tue Sep 30 13:41:34 2014 -0400

    Fix: detect ubuntu kernel for task_nsproxy
    
    Fixes this compilation error on Ubuntu kernel :
    lttng-statedump-impl.c: In function ‘lttng_statedump_process_ns’:
    lttng-statedump-impl.c:417:2: error: implicit declaration of
    	function ‘task_nsproxy’ [-Werror=implicit-function-declaration]
      proxy = task_nsproxy(p);
        ^
    lttng-statedump-impl.c:417:8: warning: assignment makes pointer from integer
    	without a cast [enabled by default]
      proxy = task_nsproxy(p);
    
    Signed-off-by: Julien Desfossez <jdesfossez@efficios.com>

diff --git a/lttng-statedump-impl.c b/lttng-statedump-impl.c
index 656cebb..17fa2cc 100644
--- a/lttng-statedump-impl.c
+++ b/lttng-statedump-impl.c
@@ -46,6 +46,7 @@
 #include <linux/wait.h>
 #include <linux/mutex.h>
 #include <linux/device.h>
+#include <linux/vermagic.h>
 
 #include "lttng-events.h"
 #include "lttng-tracer.h"
@@ -411,7 +412,7 @@ void lttng_statedump_process_ns(struct lttng_session *session,
 	 * "namespaces: Use task_lock and not rcu to protect nsproxy"
 	 * for details.
 	 */
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(3,17,0))
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(3,17,0) && !defined(UTS_UBUNTU_RELEASE_ABI))
 	rcu_read_lock();
 	proxy = task_nsproxy(p);
 #else /* #if (LINUX_VERSION_CODE < KERNEL_VERSION(3,17,0)) */
@@ -428,7 +429,7 @@ void lttng_statedump_process_ns(struct lttng_session *session,
 		trace_lttng_statedump_process_state(session,
 			p, type, mode, submode, status, NULL);
 	}
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(3,17,0))
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(3,17,0) && !defined(UTS_UBUNTU_RELEASE_ABI))
 	rcu_read_unlock();
 #endif /* #if (LINUX_VERSION_CODE < KERNEL_VERSION(3,17,0)) */
 }