X-Git-Url: http://git.lttng.org/?a=blobdiff_plain;f=ltt-debugfs-abi.h;h=8483b2750a74106aa30313120affbeaafc07c70e;hb=53f1f0ca4eb1890673992697c19e4e1507ec4ac5;hp=a232e1318c1a33ffe0d0d007f0b9ab1ae581fef8;hpb=57a13317407af307da09f519799a860f88ae7246;p=lttng-modules.git

diff --git a/ltt-debugfs-abi.h b/ltt-debugfs-abi.h
index a232e131..8483b275 100644
--- a/ltt-debugfs-abi.h
+++ b/ltt-debugfs-abi.h
@@ -11,32 +11,97 @@
 
 #include <linux/fs.h>
 
-enum instrum_type {
-	INSTRUM_TRACEPOINTS,
+#define LTTNG_SYM_NAME_LEN	128
+
+enum lttng_kernel_instrumentation {
+	LTTNG_KERNEL_TRACEPOINT,
+	LTTNG_KERNEL_KPROBE,
+	LTTNG_KERNEL_FUNCTION,
 };
 
 /*
  * LTTng DebugFS ABI structures.
  */
 
-struct lttng_channel {
-	int overwrite;			/* 1: overwrite, 0: discard */
-	u64 subbuf_size;
-	u64 num_subbuf;
-	unsigned int switch_timer_interval;
-	unsigned int read_timer_interval;
+struct lttng_kernel_channel {
+	int overwrite;				/* 1: overwrite, 0: discard */
+	uint64_t subbuf_size;			/* in bytes */
+	uint64_t num_subbuf;
+	unsigned int switch_timer_interval;	/* usecs */
+	unsigned int read_timer_interval;	/* usecs */
+};
+
+/*
+ * Either addr is used, or symbol_name and offset.
+ */
+struct lttng_kernel_kprobe {
+	uint64_t addr;
+
+	uint64_t offset;
+	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_kprobe kprobe;
+		struct lttng_kernel_function_tracer ftrace;
+	} u;
 };
 
-struct lttng_event {
-	enum instrum_type itype;
-	char name[];
+struct lttng_kernel_tracer_version {
+	uint32_t version;
+	uint32_t patchlevel;
+	uint32_t sublevel;
 };
 
-#define LTTNG_SESSION		_IO(0xF6, 0x40)
-#define LTTNG_SESSION_START	_IO(0xF6, 0x41)
-#define LTTNG_SESSION_STOP	_IO(0xF6, 0x42)
-#define LTTNG_CHANNEL		_IOW(0xF6, 0x43, struct lttng_channel)
-#define LTTNG_STREAM		_IO(0xF6, 0x44)
-#define LTTNG_EVENT		_IOW(0xF6, 0x45, struct lttng_event)
+enum lttng_kernel_context_type {
+	LTTNG_KERNEL_CONTEXT_PID,
+	LTTNG_KERNEL_CONTEXT_PERF_COUNTER,
+	LTTNG_KERNEL_CONTEXT_COMM,
+	LTTNG_KERNEL_CONTEXT_PRIO,
+	LTTNG_KERNEL_CONTEXT_NICE,
+};
+
+struct lttng_kernel_perf_counter_ctx {
+	uint32_t type;
+	uint64_t config;
+};
+
+struct lttng_kernel_context {
+	enum lttng_kernel_context_type ctx;
+	union {
+		struct lttng_kernel_perf_counter_ctx perf_counter;
+	} u;
+};
+
+/* LTTng file descriptor ioctl */
+#define LTTNG_KERNEL_SESSION			_IO(0xF6, 0x40)
+#define LTTNG_KERNEL_TRACER_VERSION		\
+	_IOR(0xF6, 0x41, struct lttng_kernel_tracer_version)
+#define LTTNG_KERNEL_TRACEPOINT_LIST		_IO(0xF6, 0x42)
+
+/* Session FD ioctl */
+#define LTTNG_KERNEL_METADATA			\
+	_IOW(0xF6, 0x50, struct lttng_kernel_channel)
+#define LTTNG_KERNEL_CHANNEL			\
+	_IOW(0xF6, 0x51, struct lttng_kernel_channel)
+#define LTTNG_KERNEL_SESSION_START		_IO(0xF6, 0x52)
+#define LTTNG_KERNEL_SESSION_STOP		_IO(0xF6, 0x53)
+
+/* Channel FD ioctl */
+#define LTTNG_KERNEL_STREAM			_IO(0xF6, 0x60)
+#define LTTNG_KERNEL_EVENT			\
+	_IOW(0xF6, 0x61, struct lttng_kernel_event)
+
+/* Event and Channel FD ioctl */
+#define LTTNG_KERNEL_CONTEXT			\
+	_IOW(0xF6, 0x70, struct lttng_kernel_context)
 
 #endif /* _LTT_DEBUGFS_ABI_H */