1 #ifndef _LTTNG_UST_ABI_H
2 #define _LTTNG_UST_ABI_H
7 * Copyright 2010-2011 (c) - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
11 * Dual LGPL v2.1/GPL v2 license.
16 #define LTTNG_UST_SYM_NAME_LEN 128
18 #define LTTNG_UST_COMM_VERSION_MAJOR 0
19 #define LTTNG_UST_COMM_VERSION_MINOR 1
21 enum lttng_ust_instrumentation
{
22 LTTNG_UST_TRACEPOINT
= 0,
24 LTTNG_UST_FUNCTION
= 2,
27 enum lttng_ust_output
{
31 struct lttng_ust_tracer_version
{
37 struct lttng_ust_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_ust_output output
; /* output mode */
47 * This structure is only used internally within UST. It is not per-se
48 * part of the communication between sessiond and UST.
50 struct lttng_ust_stream
{
53 uint64_t memory_map_size
;
56 struct lttng_ust_event
{
57 char name
[LTTNG_UST_SYM_NAME_LEN
]; /* event name */
58 enum lttng_ust_instrumentation instrumentation
;
59 /* Per instrumentation type configuration */
64 enum lttng_ust_context_type
{
65 LTTNG_UST_CONTEXT_VTID
= 0,
68 struct lttng_ust_context
{
69 enum lttng_ust_context_type ctx
;
74 #define _UST_CMD(minor) (minor)
75 #define _UST_CMDR(minor, type) (minor)
76 #define _UST_CMDW(minor, type) (minor)
78 /* Handled by object descriptor */
79 #define LTTNG_UST_RELEASE _UST_CMD(0x1)
81 /* Handled by object cmd */
83 /* LTTng-UST commands */
84 #define LTTNG_UST_SESSION _UST_CMD(0x40)
85 #define LTTNG_UST_TRACER_VERSION \
86 _UST_CMDR(0x41, struct lttng_ust_tracer_version)
87 #define LTTNG_UST_TRACEPOINT_LIST _UST_CMD(0x42)
88 #define LTTNG_UST_WAIT_QUIESCENT _UST_CMD(0x43)
89 #define LTTNG_UST_REGISTER_DONE _UST_CMD(0x44)
91 /* Session FD commands */
92 #define LTTNG_UST_METADATA \
93 _UST_CMDW(0x50, struct lttng_ust_channel)
94 #define LTTNG_UST_CHANNEL \
95 _UST_CMDW(0x51, struct lttng_ust_channel)
96 #define LTTNG_UST_SESSION_START _UST_CMD(0x52)
97 #define LTTNG_UST_SESSION_STOP _UST_CMD(0x53)
99 /* Channel FD commands */
100 #define LTTNG_UST_STREAM _UST_CMD(0x60)
101 #define LTTNG_UST_EVENT \
102 _UST_CMDW(0x61, struct lttng_ust_event)
104 /* Event and Channel FD commands */
105 #define LTTNG_UST_CONTEXT \
106 _UST_CMDW(0x70, struct lttng_ust_context)
108 /* Event, Channel and Session commands */
109 #define LTTNG_UST_ENABLE _UST_CMD(0x80)
110 #define LTTNG_UST_DISABLE _UST_CMD(0x81)
112 #define LTTNG_UST_ROOT_HANDLE 0
117 long (*cmd
)(int objd
, unsigned int cmd
, unsigned long arg
);
118 int (*release
)(int objd
);
121 /* Create root handle. Always ID 0. */
122 int lttng_abi_create_root_handle(void);
124 const struct objd_ops
*objd_ops(int id
);
125 int objd_unref(int id
);
127 void lttng_ust_abi_exit(void);
128 void ltt_events_exit(void);
130 #endif /* _LTTNG_UST_ABI_H */