X-Git-Url: http://git.lttng.org./?a=blobdiff_plain;f=ltt-debugfs-abi.h;h=d7d68926960d3a51a030d5179f83a4c063ed3436;hb=162769efd7bca728713c4bf8e609fc408d58f512;hp=ef2554b81bce95f546e799ac1ad4021a5d118bca;hpb=80c16bcf4ae014301d1da2584029bef6f6062a09;p=lttng-modules.git

diff --git a/ltt-debugfs-abi.h b/ltt-debugfs-abi.h
index ef2554b8..d7d68926 100644
--- a/ltt-debugfs-abi.h
+++ b/ltt-debugfs-abi.h
@@ -11,9 +11,12 @@
 
 #include <linux/fs.h>
 
+#define LTTNG_SYM_NAME_LEN	128
+
 enum lttng_kernel_instrumentation {
 	LTTNG_KERNEL_TRACEPOINTS,
 	LTTNG_KERNEL_KPROBES,
+	LTTNG_KERNEL_FUNCTION_TRACER,
 };
 
 /*
@@ -21,16 +24,14 @@ enum lttng_kernel_instrumentation {
  */
 
 struct lttng_kernel_channel {
-	int overwrite;			/* 1: overwrite, 0: discard */
-	uint64_t subbuf_size;
+	int overwrite;				/* 1: overwrite, 0: discard */
+	uint64_t subbuf_size;			/* in bytes */
 	uint64_t num_subbuf;
-	unsigned int switch_timer_interval;
-	unsigned int read_timer_interval;
+	unsigned int switch_timer_interval;	/* usecs */
+	unsigned int read_timer_interval;	/* usecs */
 };
 
-struct lttng_kernel_event {
-	enum lttng_kernel_instrumentation instrumentation;
-	char name[];
+struct lttng_kernel_tracepoint {
 };
 
 /*
@@ -40,7 +41,22 @@ struct lttng_kernel_kprobe {
 	uint64_t addr;
 
 	uint64_t offset;
-	char symbol_name[];
+	char symbol_name[LTTNG_SYM_NAME_LEN];
+};
+
+struct lttng_kernel_function_tracer {
+	char symbol_name[LTTNG_SYM_NAME_LEN];
+};
+
+struct lttng_kernel_event {
+	char name[LTTNG_SYM_NAME_LEN];	/* event name */
+	enum lttng_kernel_instrumentation instrumentation;
+	/* Per instrumentation type configuration */
+	union {
+		struct lttng_kernel_tracepoint tracepoint;
+		struct lttng_kernel_kprobe kprobe;
+		struct lttng_kernel_function_tracer ftrace;
+	} u;
 };
 
 struct lttng_kernel_tracer_version {