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1 | #ifndef _LTTNG_UST_ABI_H |
2 | #define _LTTNG_UST_ABI_H | |
3 | ||
4 | /* | |
5 | * lttng-ust-abi.h | |
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 | #define LTTNG_UST_SYM_NAME_LEN 128 | |
15 | ||
16 | enum lttng_ust_instrumentation { | |
17 | LTTNG_UST_TRACEPOINT = 0, | |
18 | }; | |
19 | ||
20 | /* | |
21 | * LTTng consumer mode | |
22 | */ | |
23 | enum lttng_ust_output { | |
24 | LTTNG_UST_MMAP = 0, | |
25 | }; | |
26 | ||
27 | /* | |
28 | * LTTng DebugFS ABI structures. | |
29 | */ | |
30 | ||
31 | struct lttng_ust_channel { | |
32 | int overwrite; /* 1: overwrite, 0: discard */ | |
33 | uint64_t subbuf_size; /* in bytes */ | |
34 | uint64_t num_subbuf; | |
35 | unsigned int switch_timer_interval; /* usecs */ | |
36 | unsigned int read_timer_interval; /* usecs */ | |
37 | enum lttng_ust_output output; /* mmap */ | |
38 | }; | |
39 | ||
40 | struct lttng_ust_event { | |
41 | char name[LTTNG_UST_SYM_NAME_LEN]; /* event name */ | |
42 | enum lttng_ust_instrumentation instrumentation; | |
43 | /* Per instrumentation type configuration */ | |
44 | union { | |
45 | } u; | |
46 | }; | |
47 | ||
48 | struct lttng_ust_tracer_version { | |
49 | uint32_t version; | |
50 | uint32_t patchlevel; | |
51 | uint32_t sublevel; | |
52 | }; | |
53 | ||
54 | enum lttng_ust_context_type { | |
55 | LTTNG_UST_CONTEXT_VTID = 0, | |
56 | }; | |
57 | ||
58 | struct 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 | /* LTTng-UST commands */ | |
69 | #define LTTNG_UST_SESSION _UST_CMD(0x40) | |
70 | #define LTTNG_UST_TRACER_VERSION \ | |
71 | _UST_CMDR(0x41, struct lttng_ust_tracer_version) | |
72 | #define LTTNG_UST_TRACEPOINT_LIST _UST_CMD(0x42) | |
73 | #define LTTNG_UST_WAIT_QUIESCENT _UST_CMD(0x43) | |
74 | ||
75 | /* Session FD ioctl */ | |
76 | #define LTTNG_UST_METADATA \ | |
77 | _UST_CMDW(0x50, struct lttng_ust_channel) | |
78 | #define LTTNG_UST_CHANNEL \ | |
79 | _UST_CMDW(0x51, struct lttng_ust_channel) | |
80 | #define LTTNG_UST_SESSION_START _UST_CMD(0x52) | |
81 | #define LTTNG_UST_SESSION_STOP _UST_CMD(0x53) | |
82 | ||
83 | /* Channel FD ioctl */ | |
84 | #define LTTNG_UST_STREAM _UST_CMD(0x60) | |
85 | #define LTTNG_UST_EVENT \ | |
86 | _UST_CMDW(0x61, struct lttng_ust_event) | |
87 | ||
88 | /* Event and Channel FD ioctl */ | |
89 | #define LTTNG_UST_CONTEXT \ | |
90 | _UST_CMDW(0x70, struct lttng_ust_context) | |
91 | ||
92 | /* Event, Channel and Session ioctl */ | |
93 | #define LTTNG_UST_ENABLE _UST_CMD(0x80) | |
94 | #define LTTNG_UST_DISABLE _UST_CMD(0x81) | |
95 | ||
96 | #endif /* _LTTNG_UST_ABI_H */ |