X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=lttng-abi.h;h=b63ead8d134c636838bf38baa9b3e2dcdf62879f;hb=42cabb802371ac5f22232eb494c0fdbcebd4a693;hp=8f5c0935cb4037046ca1e1d65ef093396b976761;hpb=29c956bb789f1d96f4283a44e6c5a4032180c3f3;p=lttng-modules.git

diff --git a/lttng-abi.h b/lttng-abi.h
index 8f5c0935..b63ead8d 100644
--- a/lttng-abi.h
+++ b/lttng-abi.h
@@ -25,6 +25,13 @@
 
 #include <linux/fs.h>
 
+/*
+ * Major/minor version of ABI exposed to lttng tools. Major number
+ * should be increased when an incompatible ABI change is done.
+ */
+#define LTTNG_MODULES_ABI_MAJOR_VERSION		1
+#define LTTNG_MODULES_ABI_MINOR_VERSION		0
+
 #define LTTNG_KERNEL_SYM_NAME_LEN	256
 
 enum lttng_kernel_instrumentation {
@@ -109,6 +116,11 @@ struct lttng_kernel_tracer_version {
 	uint32_t patchlevel;
 } __attribute__((packed));
 
+struct lttng_kernel_tracer_abi_version {
+	uint32_t major;
+	uint32_t minor;
+} __attribute__((packed));
+
 enum lttng_kernel_calibrate_type {
 	LTTNG_KERNEL_CALIBRATE_KRETPROBE,
 };
@@ -163,6 +175,8 @@ struct lttng_kernel_context {
 #define LTTNG_KERNEL_CALIBRATE			\
 	_IOWR(0xF6, 0x49, struct lttng_kernel_calibrate)
 #define LTTNG_KERNEL_SYSCALL_LIST		_IO(0xF6, 0x4A)
+#define LTTNG_KERNEL_TRACER_ABI_VERSION		\
+	_IOR(0xF6, 0x4B, struct lttng_kernel_tracer_abi_version)
 
 /* Session FD ioctl */
 #define LTTNG_KERNEL_METADATA			\