fix: RT_PATCH_VERSION is close to overflow

We allocated only 8bits for RT_PATCH_VERSION in LTTNG_RT_VERSION_CODE,
the current RT patch version for the 4.4 branch is currently 214 which
is getting close to 256. Bump it to 16bits to avoid breakage in the
future.

Signed-off-by: Michael Jeanson <mjeanson@efficios.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Change-Id: If791cecf3ac8ceb2a4d0c2879410ae6b4199117d

diff --git a/lttng-kernel-version.h b/lttng-kernel-version.h
index 7bed5a90812c956517a77783f510ff2305f53f56..12521a089aa79e2bd2bca474c01523d7478a7468 100644 (file)
--- a/lttng-kernel-version.h
+++ b/lttng-kernel-version.h
@@ -165,11 +165,11 @@
 /* RT patch */
 
 #define LTTNG_RT_KERNEL_VERSION(a, b, c, d) \
-       (((LTTNG_KERNEL_VERSION(a, b, c)) << 8) + (d))
+       (((LTTNG_KERNEL_VERSION(a, b, c)) << 16) + (d))
 
 #ifdef RT_PATCH_VERSION
 #define LTTNG_RT_VERSION_CODE \
-       ((LTTNG_LINUX_VERSION_CODE << 8) + RT_PATCH_VERSION)
+       ((LTTNG_LINUX_VERSION_CODE << 16) + RT_PATCH_VERSION)
 #else
 #define LTTNG_RT_VERSION_CODE  0
 #endif