Adding LTTng UST 2.0 ABI
[lttng-tools.git] / include / lttng-ust.h
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1#ifndef _LTTNG_UST_H
2#define _LTTNG_UST_H
3
4/*
5 * Taken from the lttng-ust-abi.h in the UST 2.0 git tree
6 *
7 * Copyright 2010-2011 (c) - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
8 *
9 * LTTng-UST ABI header
10 *
11 * Dual LGPL v2.1/GPL v2 license.
12 */
13
14#include <stdint.h>
15
16#define LTTNG_UST_SYM_NAME_LEN 128
17
18#define LTTNG_UST_COMM_VERSION_MAJOR 0
19#define LTTNG_UST_COMM_VERSION_MINOR 1
20
21enum lttng_ust_instrumentation {
22 LTTNG_UST_TRACEPOINT = 0,
23 LTTNG_UST_PROBE = 1,
24 LTTNG_UST_FUNCTION = 2,
25};
26
27enum lttng_ust_output {
28 LTTNG_UST_MMAP = 0,
29};
30
31struct lttng_ust_tracer_version {
32 uint32_t version;
33 uint32_t patchlevel;
34 uint32_t sublevel;
35};
36
37struct lttng_ust_channel {
38 int overwrite; /* 1: overwrite, 0: discard */
39 uint64_t subbuf_size; /* in bytes */
40 uint64_t num_subbuf;
41 unsigned int switch_timer_interval; /* usecs */
42 unsigned int read_timer_interval; /* usecs */
43 enum lttng_ust_output output; /* output mode */
44};
45
46struct lttng_ust_event {
47 char name[LTTNG_UST_SYM_NAME_LEN]; /* event name */
48 enum lttng_ust_instrumentation instrumentation;
49 /* Per instrumentation type configuration */
50 union {
51 } u;
52};
53
54enum lttng_ust_context_type {
55 LTTNG_UST_CONTEXT_VTID = 0,
56};
57
58struct lttng_ust_context {
59 enum lttng_ust_context_type ctx;
60 union {
61 } u;
62};
63
64#define _UST_CMD(minor) (minor)
65#define _UST_CMDR(minor, type) (minor)
66#define _UST_CMDW(minor, type) (minor)
67
68/* Handled by object descriptor */
69#define LTTNG_UST_RELEASE _UST_CMD(0x1)
70
71/* Handled by object cmd */
72
73/* LTTng-UST commands */
74#define LTTNG_UST_SESSION _UST_CMD(0x40)
75#define LTTNG_UST_TRACER_VERSION \
76 _UST_CMDR(0x41, struct lttng_ust_tracer_version)
77#define LTTNG_UST_TRACEPOINT_LIST _UST_CMD(0x42)
78#define LTTNG_UST_WAIT_QUIESCENT _UST_CMD(0x43)
79
80/* Session FD ioctl */
81#define LTTNG_UST_METADATA \
82 _UST_CMDW(0x50, struct lttng_ust_channel)
83#define LTTNG_UST_CHANNEL \
84 _UST_CMDW(0x51, struct lttng_ust_channel)
85#define LTTNG_UST_SESSION_START _UST_CMD(0x52)
86#define LTTNG_UST_SESSION_STOP _UST_CMD(0x53)
87
88/* Channel FD ioctl */
89#define LTTNG_UST_STREAM _UST_CMD(0x60)
90#define LTTNG_UST_EVENT \
91 _UST_CMDW(0x61, struct lttng_ust_event)
92
93/* Event and Channel FD ioctl */
94#define LTTNG_UST_CONTEXT \
95 _UST_CMDW(0x70, struct lttng_ust_context)
96
97/* Event, Channel and Session ioctl */
98#define LTTNG_UST_ENABLE _UST_CMD(0x80)
99#define LTTNG_UST_DISABLE _UST_CMD(0x81)
100
101#endif /* _LTTNG_UST_H */
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