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,
22 LTTNG_KERNEL_KRETPROBE
= 3,
28 enum lttng_kernel_output
{
29 LTTNG_KERNEL_SPLICE
= 0,
30 LTTNG_KERNEL_MMAP
= 1,
34 * LTTng DebugFS ABI structures.
37 struct lttng_kernel_channel
{
38 int overwrite
; /* 1: overwrite, 0: discard */
39 uint64_t subbuf_size
; /* in bytes */
41 unsigned int switch_timer_interval
; /* usecs */
42 unsigned int read_timer_interval
; /* usecs */
43 enum lttng_kernel_output output
; /* splice, mmap */
46 struct lttng_kernel_kretprobe
{
50 char symbol_name
[LTTNG_SYM_NAME_LEN
];
54 * Either addr is used, or symbol_name and offset.
56 struct lttng_kernel_kprobe
{
60 char symbol_name
[LTTNG_SYM_NAME_LEN
];
63 struct lttng_kernel_function_tracer
{
64 char symbol_name
[LTTNG_SYM_NAME_LEN
];
67 struct lttng_kernel_event
{
68 char name
[LTTNG_SYM_NAME_LEN
]; /* event name */
69 enum lttng_kernel_instrumentation instrumentation
;
70 /* Per instrumentation type configuration */
72 struct lttng_kernel_kretprobe kretprobe
;
73 struct lttng_kernel_kprobe kprobe
;
74 struct lttng_kernel_function_tracer ftrace
;
78 struct lttng_kernel_tracer_version
{
84 enum lttng_kernel_context_type
{
85 LTTNG_KERNEL_CONTEXT_PID
= 0,
86 LTTNG_KERNEL_CONTEXT_PERF_COUNTER
= 1,
87 LTTNG_KERNEL_CONTEXT_COMM
= 2,
88 LTTNG_KERNEL_CONTEXT_PRIO
= 3,
89 LTTNG_KERNEL_CONTEXT_NICE
= 4,
90 LTTNG_KERNEL_CONTEXT_VPID
= 5,
91 LTTNG_KERNEL_CONTEXT_TID
= 6,
92 LTTNG_KERNEL_CONTEXT_VTID
= 7,
93 LTTNG_KERNEL_CONTEXT_PPID
= 8,
94 LTTNG_KERNEL_CONTEXT_VPPID
= 9,
97 struct lttng_kernel_perf_counter_ctx
{
100 char name
[LTTNG_SYM_NAME_LEN
];
103 struct lttng_kernel_context
{
104 enum lttng_kernel_context_type ctx
;
106 struct lttng_kernel_perf_counter_ctx perf_counter
;
110 /* LTTng file descriptor ioctl */
111 #define LTTNG_KERNEL_SESSION _IO(0xF6, 0x40)
112 #define LTTNG_KERNEL_TRACER_VERSION \
113 _IOR(0xF6, 0x41, struct lttng_kernel_tracer_version)
114 #define LTTNG_KERNEL_TRACEPOINT_LIST _IO(0xF6, 0x42)
115 #define LTTNG_KERNEL_WAIT_QUIESCENT _IO(0xF6, 0x43)
117 /* Session FD ioctl */
118 #define LTTNG_KERNEL_METADATA \
119 _IOW(0xF6, 0x50, struct lttng_kernel_channel)
120 #define LTTNG_KERNEL_CHANNEL \
121 _IOW(0xF6, 0x51, struct lttng_kernel_channel)
122 #define LTTNG_KERNEL_SESSION_START _IO(0xF6, 0x52)
123 #define LTTNG_KERNEL_SESSION_STOP _IO(0xF6, 0x53)
125 /* Channel FD ioctl */
126 #define LTTNG_KERNEL_STREAM _IO(0xF6, 0x60)
127 #define LTTNG_KERNEL_EVENT \
128 _IOW(0xF6, 0x61, struct lttng_kernel_event)
130 /* Event and Channel FD ioctl */
131 #define LTTNG_KERNEL_CONTEXT \
132 _IOW(0xF6, 0x70, struct lttng_kernel_context)
134 /* Event, Channel and Session ioctl */
135 #define LTTNG_KERNEL_ENABLE _IO(0xF6, 0x80)
136 #define LTTNG_KERNEL_DISABLE _IO(0xF6, 0x81)
138 #endif /* _LTT_DEBUGFS_ABI_H */