X-Git-Url: http://git.lttng.org/?a=blobdiff_plain;f=lttng-kernel-version.h;h=53657c92f18bc80d5a97eb12c1fa697070b379ef;hb=ea14d581084a4c237426d853cd07bfa93e9bac82;hp=280a398a93e370db16f95b416802fb0ef0946213;hpb=5fa38800d965d5fa35a2c0c9a93e330711ec87e0;p=lttng-modules.git

diff --git a/lttng-kernel-version.h b/lttng-kernel-version.h
index 280a398a..53657c92 100644
--- a/lttng-kernel-version.h
+++ b/lttng-kernel-version.h
@@ -25,12 +25,178 @@
 
 #include <linux/version.h>
 
+/*
+ * The following defines are extracted from the toplevel Linux Makefile and
+ * passed on the command line -with '-D'.
+ */
+
+#ifndef LTTNG_LINUX_MAJOR
+#define LTTNG_LINUX_MAJOR 0
+#endif
+
+#ifndef LTTNG_LINUX_MINOR
+#define LTTNG_LINUX_MINOR 0
+#endif
+
+#ifndef LTTNG_LINUX_PATCH
+#define LTTNG_LINUX_PATCH 0
+#endif
+
+/*
+ * Some stable releases have overflowed the 8bits allocated to the sublevel in
+ * the version code. To determine if the current kernel is affected, use the
+ * sublevel version from the Makefile. This is currently true for the 4.4.256
+ * and 4.9.256 stable releases.
+ *
+ * When the sublevel has overflowed, use the values from the Makefile instead
+ * of LINUX_VERSION_CODE from the kernel headers and allocate 16bits.
+ * Otherwise, keep using the version code from the headers to minimise the
+ * behavior change and avoid regressions.
+ *
+ * Cast the result to uint64_t to prevent overflowing when we append distro
+ * specific version information.
+ */
+#if (LTTNG_LINUX_PATCH >= 256)
+
+#define LTTNG_KERNEL_VERSION(a, b, c) \
+	((((a) << 24) + ((b) << 16) + (c)) * 1ULL)
+
+#define LTTNG_LINUX_VERSION_CODE \
+	LTTNG_KERNEL_VERSION(LTTNG_LINUX_MAJOR, LTTNG_LINUX_MINOR, LTTNG_LINUX_PATCH)
+
+#else
+
+#define LTTNG_KERNEL_VERSION(a, b, c) (KERNEL_VERSION(a, b, c) * 1ULL)
+#define LTTNG_LINUX_VERSION_CODE (LINUX_VERSION_CODE * 1ULL)
+
+#endif
+
+#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(2,6,33))
+#include <generated/utsrelease.h>
+#else /* #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(2,6,33)) */
+#include <linux/utsrelease.h>
+#endif /* #else #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(2,6,33)) */
+
 /*
  * This macro checks if the kernel version is between the two specified
- * versions (inclusive).
+ * versions (lower limit inclusive, upper limit exclusive).
  */
 #define LTTNG_KERNEL_RANGE(a_low, b_low, c_low, a_high, b_high, c_high) \
-	(LINUX_VERSION_CODE >= KERNEL_VERSION(a_low, b_low, c_low) && \
-	 LINUX_VERSION_CODE <= KERNEL_VERSION(a_high, b_high, c_high))
+	(LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(a_low, b_low, c_low) && \
+	 LTTNG_LINUX_VERSION_CODE < LTTNG_KERNEL_VERSION(a_high, b_high, c_high))
+
+/* Ubuntu */
+
+#define LTTNG_UBUNTU_KERNEL_VERSION(a, b, c, d) \
+	(((LTTNG_KERNEL_VERSION(a, b, c)) << 16) + (d))
+
+#ifdef UTS_UBUNTU_RELEASE_ABI
+#define LTTNG_UBUNTU_VERSION_CODE \
+	((LTTNG_LINUX_VERSION_CODE << 16) + UTS_UBUNTU_RELEASE_ABI)
+#else
+#define LTTNG_UBUNTU_VERSION_CODE 	0
+#endif
+
+#define LTTNG_UBUNTU_KERNEL_RANGE(a_low, b_low, c_low, d_low, \
+		a_high, b_high, c_high, d_high) \
+	(LTTNG_UBUNTU_VERSION_CODE >= \
+		LTTNG_UBUNTU_KERNEL_VERSION(a_low, b_low, c_low, d_low) && \
+		LTTNG_UBUNTU_VERSION_CODE < \
+		LTTNG_UBUNTU_KERNEL_VERSION(a_high, b_high, c_high, d_high))
+
+/* Debian */
+
+#define LTTNG_DEBIAN_KERNEL_VERSION(a, b, c, d, e, f) \
+	(((LTTNG_KERNEL_VERSION(a, b, c)) * 1000000ULL) + ((d) * 10000) + ((e) * 100) + (f))
+
+#ifdef DEBIAN_API_VERSION
+#define LTTNG_DEBIAN_VERSION_CODE \
+	((LTTNG_LINUX_VERSION_CODE * 1000000ULL) + DEBIAN_API_VERSION)
+#else
+#define LTTNG_DEBIAN_VERSION_CODE	0
+#endif
+
+#define LTTNG_DEBIAN_KERNEL_RANGE(a_low, b_low, c_low, d_low, e_low, f_low, \
+		a_high, b_high, c_high, d_high, e_high, f_high) \
+	(LTTNG_DEBIAN_VERSION_CODE >= \
+		LTTNG_DEBIAN_KERNEL_VERSION(a_low, b_low, c_low, d_low, e_low, f_low) && \
+		LTTNG_DEBIAN_VERSION_CODE < \
+		LTTNG_DEBIAN_KERNEL_VERSION(a_high, b_high, c_high, d_high, e_high, f_high))
+
+#define LTTNG_RHEL_KERNEL_VERSION(a, b, c, d, e, f) \
+	(((LTTNG_KERNEL_VERSION(a, b, c)) * 10000000ULL) + ((d) * 10000) + ((e) * 100) + (f))
+
+/* RHEL */
+
+#ifdef RHEL_API_VERSION
+#define LTTNG_RHEL_VERSION_CODE \
+	((LTTNG_LINUX_VERSION_CODE * 10000000ULL) + RHEL_API_VERSION)
+#else
+#define LTTNG_RHEL_VERSION_CODE		0
+#endif
+
+#define LTTNG_RHEL_KERNEL_RANGE(a_low, b_low, c_low, d_low, e_low, f_low, \
+		a_high, b_high, c_high, d_high, e_high, f_high) \
+	(LTTNG_RHEL_VERSION_CODE >= \
+		LTTNG_RHEL_KERNEL_VERSION(a_low, b_low, c_low, d_low, e_low, f_low) && \
+		LTTNG_RHEL_VERSION_CODE < \
+		LTTNG_RHEL_KERNEL_VERSION(a_high, b_high, c_high, d_high, e_high, f_high))
+
+/* SUSE Linux enterprise */
+
+#define LTTNG_SLE_KERNEL_VERSION(a, b, c, d, e, f) \
+	(((LTTNG_KERNEL_VERSION(a, b, c)) * 10000000ULL) + ((d) * 10000) + ((e) * 100) + (f))
+
+#ifdef SLE_API_VERSION
+#define LTTNG_SLE_VERSION_CODE \
+	((LTTNG_LINUX_VERSION_CODE * 10000000ULL) + SLE_API_VERSION)
+#else
+#define LTTNG_SLE_VERSION_CODE 	0
+#endif
+
+#define LTTNG_SLE_KERNEL_RANGE(a_low, b_low, c_low, d_low, e_low, f_low, \
+		a_high, b_high, c_high, d_high, e_high, f_high) \
+	(LTTNG_SLE_VERSION_CODE >= \
+		LTTNG_SLE_KERNEL_VERSION(a_low, b_low, c_low, d_low, e_low, f_low) && \
+		LTTNG_SLE_VERSION_CODE < \
+		LTTNG_SLE_KERNEL_VERSION(a_high, b_high, c_high, d_high, e_high, f_high))
+
+/* Fedora */
+
+#define LTTNG_FEDORA_KERNEL_VERSION(a, b, c, d) \
+        (((LTTNG_KERNEL_VERSION(a, b, c)) * 10000ULL) + (d))
+
+#ifdef FEDORA_REVISION_VERSION
+#define LTTNG_FEDORA_VERSION_CODE \
+        ((LTTNG_LINUX_VERSION_CODE * 10000ULL) + FEDORA_REVISION_VERSION)
+#else
+#define LTTNG_FEDORA_VERSION_CODE         0
+#endif
+
+#define LTTNG_FEDORA_KERNEL_RANGE(a_low, b_low, c_low, d_low, \
+                a_high, b_high, c_high, d_high) \
+        (LTTNG_FEDORA_VERSION_CODE >= \
+                LTTNG_FEDORA_KERNEL_VERSION(a_low, b_low, c_low, d_low) && \
+                LTTNG_FEDORA_VERSION_CODE < \
+                LTTNG_FEDORA_KERNEL_VERSION(a_high, b_high, c_high, d_high))
+
+/* RT patch */
+
+#define LTTNG_RT_KERNEL_VERSION(a, b, c, d) \
+	(((LTTNG_KERNEL_VERSION(a, b, c)) << 16) + (d))
+
+#ifdef RT_PATCH_VERSION
+#define LTTNG_RT_VERSION_CODE \
+	((LTTNG_LINUX_VERSION_CODE << 16) + RT_PATCH_VERSION)
+#else
+#define LTTNG_RT_VERSION_CODE 	0
+#endif
+
+#define LTTNG_RT_KERNEL_RANGE(a_low, b_low, c_low, d_low, \
+		a_high, b_high, c_high, d_high) \
+	(LTTNG_RT_VERSION_CODE >= \
+		LTTNG_RT_KERNEL_VERSION(a_low, b_low, c_low, d_low) && \
+		LTTNG_RT_VERSION_CODE < \
+		LTTNG_RT_KERNEL_VERSION(a_high, b_high, c_high, d_high))
 
 #endif /* _LTTNG_KERNEL_VERSION_H */