X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=lttng-abi.h;h=83bf93180bc6d97c8a048f561051f2a9a06d038e;hb=1aca53e11bbd4a28fb88f8466744abf66447c92f;hp=24877dc863c6513c93221631239e35bffab6b6e9;hpb=149b9a9d86d7351ee9a44ce391884cc12e922124;p=lttng-modules.git

diff --git a/lttng-abi.h b/lttng-abi.h
index 24877dc8..83bf9318 100644
--- a/lttng-abi.h
+++ b/lttng-abi.h
@@ -75,10 +75,19 @@ struct lttng_kernel_function_tracer {
 } __attribute__((packed));
 
 struct lttng_kernel_uprobe {
-	char path[LTTNG_KERNEL_SYM_NAME_LEN];
+	int fd;
+} __attribute__((packed));
+
+struct lttng_kernel_event_callsite_uprobe {
 	uint64_t offset;
 } __attribute__((packed));
 
+struct lttng_kernel_event_callsite {
+	union {
+		struct lttng_kernel_event_callsite_uprobe uprobe;
+	} u;
+} __attribute__((packed));
+
 /*
  * For syscall tracing, name = "*" means "enable all".
  */
@@ -220,25 +229,32 @@ struct lttng_kernel_filter_bytecode {
 
 /* Event FD ioctl */
 #define LTTNG_KERNEL_FILTER			_IO(0xF6, 0x90)
+#define LTTNG_KERNEL_ADD_CALLSITE		_IO(0xF6, 0x91)
+
+/*
+ * LTTng-specific ioctls for the lib ringbuffer.
+ *
+ * Operations applying to the current sub-buffer need to occur between
+ * a get/put or get_next/put_next ioctl pair.
+ */
 
-/* LTTng-specific ioctls for the lib ringbuffer */
 /* returns the timestamp begin of the current sub-buffer */
 #define LTTNG_RING_BUFFER_GET_TIMESTAMP_BEGIN	_IOR(0xF6, 0x20, uint64_t)
 /* returns the timestamp end of the current sub-buffer */
 #define LTTNG_RING_BUFFER_GET_TIMESTAMP_END	_IOR(0xF6, 0x21, uint64_t)
-/* returns the number of events discarded */
+/* returns the number of events discarded of the current sub-buffer */
 #define LTTNG_RING_BUFFER_GET_EVENTS_DISCARDED	_IOR(0xF6, 0x22, uint64_t)
-/* returns the packet payload size */
+/* returns the packet payload size of the current sub-buffer */
 #define LTTNG_RING_BUFFER_GET_CONTENT_SIZE	_IOR(0xF6, 0x23, uint64_t)
-/* returns the actual packet size */
+/* returns the packet size of the current sub-buffer*/
 #define LTTNG_RING_BUFFER_GET_PACKET_SIZE	_IOR(0xF6, 0x24, uint64_t)
-/* returns the stream id */
+/* returns the stream id (invariant for the stream) */
 #define LTTNG_RING_BUFFER_GET_STREAM_ID		_IOR(0xF6, 0x25, uint64_t)
-/* returns the current timestamp */
+/* returns the current timestamp as perceived from the tracer */
 #define LTTNG_RING_BUFFER_GET_CURRENT_TIMESTAMP	_IOR(0xF6, 0x26, uint64_t)
-/* returns the packet sequence number */
+/* returns the packet sequence number of the current sub-buffer */
 #define LTTNG_RING_BUFFER_GET_SEQ_NUM		_IOR(0xF6, 0x27, uint64_t)
-/* returns the stream instance id */
+/* returns the stream instance id (invariant for the stream) */
 #define LTTNG_RING_BUFFER_INSTANCE_ID		_IOR(0xF6, 0x28, uint64_t)
 
 #ifdef CONFIG_COMPAT
@@ -248,25 +264,25 @@ struct lttng_kernel_filter_bytecode {
 /* returns the timestamp end of the current sub-buffer */
 #define LTTNG_RING_BUFFER_COMPAT_GET_TIMESTAMP_END \
 	LTTNG_RING_BUFFER_GET_TIMESTAMP_END
-/* returns the number of events discarded */
+/* returns the number of events discarded of the current sub-buffer */
 #define LTTNG_RING_BUFFER_COMPAT_GET_EVENTS_DISCARDED \
 	LTTNG_RING_BUFFER_GET_EVENTS_DISCARDED
-/* returns the packet payload size */
+/* returns the packet payload size of the current sub-buffer */
 #define LTTNG_RING_BUFFER_COMPAT_GET_CONTENT_SIZE \
 	LTTNG_RING_BUFFER_GET_CONTENT_SIZE
-/* returns the actual packet size */
+/* returns the packet size of the current sub-buffer */
 #define LTTNG_RING_BUFFER_COMPAT_GET_PACKET_SIZE \
 	LTTNG_RING_BUFFER_GET_PACKET_SIZE
-/* returns the stream id */
+/* returns the stream id (invariant for the stream) */
 #define LTTNG_RING_BUFFER_COMPAT_GET_STREAM_ID \
 	LTTNG_RING_BUFFER_GET_STREAM_ID
-/* returns the current timestamp */
+/* returns the current timestamp as perceived from the tracer */
 #define LTTNG_RING_BUFFER_COMPAT_GET_CURRENT_TIMESTAMP \
 	LTTNG_RING_BUFFER_GET_CURRENT_TIMESTAMP
-/* returns the packet sequence number */
+/* returns the packet sequence number of the current sub-buffer */
 #define LTTNG_RING_BUFFER_COMPAT_GET_SEQ_NUM	\
 	LTTNG_RING_BUFFER_GET_SEQ_NUM
-/* returns the stream instance id */
+/* returns the stream instance id (invariant for the stream) */
 #define LTTNG_RING_BUFFER_COMPAT_INSTANCE_ID	\
 	LTTNG_RING_BUFFER_INSTANCE_ID
 #endif /* CONFIG_COMPAT */