X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=ltt-debugfs-abi.h;h=c20ae2da1a152f2069e6171c7b120baefdc7d1a5;hb=c26fddc2d5dca76292182857908a0307d91863b6;hp=ecbd5413825f6fe8d877293ace6320b81d1fd56c;hpb=d6d808f3780d0b519aaf966e66df501730db7d13;p=lttng-modules.git

diff --git a/ltt-debugfs-abi.h b/ltt-debugfs-abi.h
index ecbd5413..c20ae2da 100644
--- a/ltt-debugfs-abi.h
+++ b/ltt-debugfs-abi.h
@@ -7,15 +7,29 @@
  * 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_KPROBE_SYM_NAME_LEN	128
+#define LTTNG_SYM_NAME_LEN	128
 
 enum lttng_kernel_instrumentation {
-	LTTNG_KERNEL_TRACEPOINTS,
-	LTTNG_KERNEL_KPROBES,
+	LTTNG_KERNEL_TRACEPOINT	= 0,
+	LTTNG_KERNEL_KPROBE	= 1,
+	LTTNG_KERNEL_FUNCTION	= 2,
+	LTTNG_KERNEL_KRETPROBE	= 3,
+	LTTNG_KERNEL_NOOP	= 4,	/* not hooked */
+	LTTNG_KERNEL_SYSCALL	= 5,
+};
+
+/*
+ * LTTng consumer mode
+ */
+enum lttng_kernel_output {
+	LTTNG_KERNEL_SPLICE	= 0,
+	LTTNG_KERNEL_MMAP	= 1,
 };
 
 /*
@@ -23,11 +37,19 @@ 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 */
+	enum lttng_kernel_output output;	/* splice, mmap */
+};
+
+struct lttng_kernel_kretprobe {
+	uint64_t addr;
+
+	uint64_t offset;
+	char symbol_name[LTTNG_SYM_NAME_LEN];
 };
 
 /*
@@ -37,16 +59,25 @@ struct lttng_kernel_kprobe {
 	uint64_t addr;
 
 	uint64_t offset;
-	char symbol_name[LTTNG_KPROBE_SYM_NAME_LEN];
+	char symbol_name[LTTNG_SYM_NAME_LEN];
+};
+
+struct lttng_kernel_function_tracer {
+	char symbol_name[LTTNG_SYM_NAME_LEN];
 };
 
+/*
+ * For syscall tracing, name = '\0' means "enable all".
+ */
 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_kretprobe kretprobe;
 		struct lttng_kernel_kprobe kprobe;
+		struct lttng_kernel_function_tracer ftrace;
 	} u;
-	char name[];
 };
 
 struct lttng_kernel_tracer_version {
@@ -55,19 +86,68 @@ struct lttng_kernel_tracer_version {
 	uint32_t sublevel;
 };
 
-#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	\
-	_IOR(0xF6, 0x48, struct lttng_kernel_tracer_version)
+enum lttng_kernel_calibrate_type {
+	LTTNG_KERNEL_CALIBRATE_KRETPROBE,
+};
+
+struct lttng_kernel_calibrate {
+	enum lttng_kernel_calibrate_type type;	/* type (input) */
+};
+
+enum lttng_kernel_context_type {
+	LTTNG_KERNEL_CONTEXT_PID		= 0,
+	LTTNG_KERNEL_CONTEXT_PERF_COUNTER	= 1,
+	LTTNG_KERNEL_CONTEXT_COMM		= 2,
+	LTTNG_KERNEL_CONTEXT_PRIO		= 3,
+	LTTNG_KERNEL_CONTEXT_NICE		= 4,
+	LTTNG_KERNEL_CONTEXT_VPID		= 5,
+	LTTNG_KERNEL_CONTEXT_TID		= 6,
+	LTTNG_KERNEL_CONTEXT_VTID		= 7,
+	LTTNG_KERNEL_CONTEXT_PPID		= 8,
+	LTTNG_KERNEL_CONTEXT_VPPID		= 9,
+};
+
+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)
+#define LTTNG_KERNEL_WAIT_QUIESCENT		_IO(0xF6, 0x43)
+#define LTTNG_KERNEL_CALIBRATE			\
+	_IOWR(0xF6, 0x44, struct lttng_kernel_calibrate)
+
+/* 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 */