X-Git-Url: http://git.lttng.org/?a=blobdiff_plain;f=ltt-debugfs-abi.h;h=8dc0fde9b8c4cd59738438f41f9ec76bb4f86326;hb=b64bc438d1c9bbcf241c598ca9f0e00d5770d784;hp=103e561b45f0460b8ac43bdb1acbd8f7c76d3dcc;hpb=38d024aef3fc8a0dc8dbecf6fbd4b55dc1e5e49f;p=lttng-modules.git

diff --git a/ltt-debugfs-abi.h b/ltt-debugfs-abi.h
index 103e561b..8dc0fde9 100644
--- a/ltt-debugfs-abi.h
+++ b/ltt-debugfs-abi.h
@@ -7,13 +7,18 @@
  * Copyright 2010 (c) - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
  *
  * LTTng debugfs ABI header
+ *
+ * Dual LGPL v2.1/GPL v2 license.
  */
 
 #include <linux/fs.h>
 
+#define LTTNG_SYM_NAME_LEN	128
+
 enum lttng_kernel_instrumentation {
-	LTTNG_KERNEL_TRACEPOINTS,
-	LTTNG_KERNEL_KPROBES,
+	LTTNG_KERNEL_TRACEPOINT,
+	LTTNG_KERNEL_KPROBE,
+	LTTNG_KERNEL_FUNCTION,
 };
 
 /*
@@ -21,41 +26,94 @@ enum lttng_kernel_instrumentation {
  */
 
 struct lttng_kernel_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_event {
-	enum lttng_kernel_instrumentation instrumentation;
-	char name[];
+	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 {
-	u64 addr;
-
-	u64 offset;
-	char symbol_name[];
-};
-
-#define LTTNG_KERNEL_SESSION		_IO(0xF6, 0x40)
-#define LTTNG_KERNEL_SESSION_START	_IO(0xF6, 0x41)
-#define LTTNG_KERNEL_SESSION_STOP	_IO(0xF6, 0x42)
-#define LTTNG_KERNEL_CHANNEL		\
-	_IOW(0xF6, 0x43, struct lttng_kernel_channel)
-#define LTTNG_KERNEL_STREAM		_IO(0xF6, 0x44)
-#define LTTNG_KERNEL_EVENT		\
-	_IOW(0xF6, 0x45, struct lttng_kernel_event)
-#define LTTNG_KERNEL_METADATA		\
-	_IOW(0xF6, 0x46, struct lttng_kernel_channel)
-#define LTTNG_KERNEL_KPROBE		\
-	_IOW(0xF6, 0x47, struct lttng_kernel_kprobe)
-#define LTTNG_KERNEL_TRACER_VERSION	\
-	_IOW(0xF6, 0x48, struct lttng_kernel_tracer_version)
+	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_kernel_tracer_version {
+	uint32_t version;
+	uint32_t patchlevel;
+	uint32_t sublevel;
+};
+
+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,
+	LTTNG_KERNEL_CONTEXT_VPID,
+	LTTNG_KERNEL_CONTEXT_TID,
+	LTTNG_KERNEL_CONTEXT_VTID,
+	LTTNG_KERNEL_CONTEXT_PPID,
+	LTTNG_KERNEL_CONTEXT_VPPID,
+};
+
+struct lttng_kernel_perf_counter_ctx {
+	uint32_t type;
+	uint64_t config;
+	char name[LTTNG_SYM_NAME_LEN];
+};
+
+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)
+
+/* Event, Channel and Session ioctl */
+#define LTTNG_KERNEL_ENABLE			_IO(0xF6, 0x80)
+#define LTTNG_KERNEL_DISABLE			_IO(0xF6, 0x81)
 
 #endif /* _LTT_DEBUGFS_ABI_H */