1 #ifndef _LTT_DEBUGFS_ABI_H
2 #define _LTT_DEBUGFS_ABI_H
7 * Copyright 2010 (c) - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
9 * LTTng debugfs ABI header
11 * Dual LGPL v2.1/GPL v2 license.
16 #define LTTNG_SYM_NAME_LEN 128
18 enum lttng_kernel_instrumentation
{
19 LTTNG_KERNEL_TRACEPOINT
= 0,
20 LTTNG_KERNEL_KPROBE
= 1,
21 LTTNG_KERNEL_FUNCTION
= 2,
27 enum lttng_kernel_output
{
28 LTTNG_KERNEL_SPLICE
= 0,
29 LTTNG_KERNEL_MMAP
= 1,
33 * LTTng DebugFS ABI structures.
36 struct lttng_kernel_channel
{
37 int overwrite
; /* 1: overwrite, 0: discard */
38 uint64_t subbuf_size
; /* in bytes */
40 unsigned int switch_timer_interval
; /* usecs */
41 unsigned int read_timer_interval
; /* usecs */
42 enum lttng_kernel_output output
; /* splice, mmap */
46 * Either addr is used, or symbol_name and offset.
48 struct lttng_kernel_kprobe
{
52 char symbol_name
[LTTNG_SYM_NAME_LEN
];
55 struct lttng_kernel_function_tracer
{
56 char symbol_name
[LTTNG_SYM_NAME_LEN
];
59 struct lttng_kernel_event
{
60 char name
[LTTNG_SYM_NAME_LEN
]; /* event name */
61 enum lttng_kernel_instrumentation instrumentation
;
62 /* Per instrumentation type configuration */
64 struct lttng_kernel_kprobe kprobe
;
65 struct lttng_kernel_function_tracer ftrace
;
69 struct lttng_kernel_tracer_version
{
75 enum lttng_kernel_context_type
{
76 LTTNG_KERNEL_CONTEXT_PID
= 0,
77 LTTNG_KERNEL_CONTEXT_PERF_COUNTER
= 1,
78 LTTNG_KERNEL_CONTEXT_COMM
= 2,
79 LTTNG_KERNEL_CONTEXT_PRIO
= 3,
80 LTTNG_KERNEL_CONTEXT_NICE
= 4,
81 LTTNG_KERNEL_CONTEXT_VPID
= 5,
82 LTTNG_KERNEL_CONTEXT_TID
= 6,
83 LTTNG_KERNEL_CONTEXT_VTID
= 7,
84 LTTNG_KERNEL_CONTEXT_PPID
= 8,
85 LTTNG_KERNEL_CONTEXT_VPPID
= 9,
88 struct lttng_kernel_perf_counter_ctx
{
91 char name
[LTTNG_SYM_NAME_LEN
];
94 struct lttng_kernel_context
{
95 enum lttng_kernel_context_type ctx
;
97 struct lttng_kernel_perf_counter_ctx perf_counter
;
101 /* LTTng file descriptor ioctl */
102 #define LTTNG_KERNEL_SESSION _IO(0xF6, 0x40)
103 #define LTTNG_KERNEL_TRACER_VERSION \
104 _IOR(0xF6, 0x41, struct lttng_kernel_tracer_version)
105 #define LTTNG_KERNEL_TRACEPOINT_LIST _IO(0xF6, 0x42)
106 #define LTTNG_KERNEL_WAIT_QUIESCENT _IO(0xF6, 0x43)
108 /* Session FD ioctl */
109 #define LTTNG_KERNEL_METADATA \
110 _IOW(0xF6, 0x50, struct lttng_kernel_channel)
111 #define LTTNG_KERNEL_CHANNEL \
112 _IOW(0xF6, 0x51, struct lttng_kernel_channel)
113 #define LTTNG_KERNEL_SESSION_START _IO(0xF6, 0x52)
114 #define LTTNG_KERNEL_SESSION_STOP _IO(0xF6, 0x53)
116 /* Channel FD ioctl */
117 #define LTTNG_KERNEL_STREAM _IO(0xF6, 0x60)
118 #define LTTNG_KERNEL_EVENT \
119 _IOW(0xF6, 0x61, struct lttng_kernel_event)
121 /* Event and Channel FD ioctl */
122 #define LTTNG_KERNEL_CONTEXT \
123 _IOW(0xF6, 0x70, struct lttng_kernel_context)
125 /* Event, Channel and Session ioctl */
126 #define LTTNG_KERNEL_ENABLE _IO(0xF6, 0x80)
127 #define LTTNG_KERNEL_DISABLE _IO(0xF6, 0x81)
129 #endif /* _LTT_DEBUGFS_ABI_H */