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57a13317 MD |
1 | #ifndef _LTT_DEBUGFS_ABI_H |
2 | #define _LTT_DEBUGFS_ABI_H | |
3 | ||
4 | /* | |
5 | * ltt-debugfs-abi.h | |
6 | * | |
7 | * Copyright 2010 (c) - Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
8 | * | |
9 | * LTTng debugfs ABI header | |
17baffe2 MD |
10 | * |
11 | * Dual LGPL v2.1/GPL v2 license. | |
57a13317 MD |
12 | */ |
13 | ||
14 | #include <linux/fs.h> | |
15 | ||
e0a7a7c4 | 16 | #define LTTNG_SYM_NAME_LEN 128 |
d6d808f3 | 17 | |
38d024ae | 18 | enum lttng_kernel_instrumentation { |
4c183524 MD |
19 | LTTNG_KERNEL_TRACEPOINT = 0, |
20 | LTTNG_KERNEL_KPROBE = 1, | |
21 | LTTNG_KERNEL_FUNCTION = 2, | |
57a13317 MD |
22 | }; |
23 | ||
96ba7208 JD |
24 | /* |
25 | * LTTng consumer mode | |
26 | */ | |
27 | enum lttng_kernel_output { | |
28 | LTTNG_KERNEL_SPLICE = 0, | |
29 | LTTNG_KERNEL_MMAP = 1, | |
30 | }; | |
31 | ||
57a13317 MD |
32 | /* |
33 | * LTTng DebugFS ABI structures. | |
34 | */ | |
35 | ||
38d024ae | 36 | struct lttng_kernel_channel { |
9e245ead MD |
37 | int overwrite; /* 1: overwrite, 0: discard */ |
38 | uint64_t subbuf_size; /* in bytes */ | |
80c16bcf | 39 | uint64_t num_subbuf; |
9e245ead MD |
40 | unsigned int switch_timer_interval; /* usecs */ |
41 | unsigned int read_timer_interval; /* usecs */ | |
96ba7208 | 42 | enum lttng_kernel_output output; /* splice, mmap */ |
57a13317 MD |
43 | }; |
44 | ||
38d024ae MD |
45 | /* |
46 | * Either addr is used, or symbol_name and offset. | |
47 | */ | |
48 | struct lttng_kernel_kprobe { | |
80c16bcf | 49 | uint64_t addr; |
38d024ae | 50 | |
80c16bcf | 51 | uint64_t offset; |
e0a7a7c4 | 52 | char symbol_name[LTTNG_SYM_NAME_LEN]; |
d6d808f3 MD |
53 | }; |
54 | ||
f17701fb | 55 | struct lttng_kernel_function_tracer { |
e0a7a7c4 | 56 | char symbol_name[LTTNG_SYM_NAME_LEN]; |
f17701fb MD |
57 | }; |
58 | ||
d6d808f3 | 59 | struct lttng_kernel_event { |
30bdb6e4 | 60 | char name[LTTNG_SYM_NAME_LEN]; /* event name */ |
d6d808f3 MD |
61 | enum lttng_kernel_instrumentation instrumentation; |
62 | /* Per instrumentation type configuration */ | |
63 | union { | |
64 | struct lttng_kernel_kprobe kprobe; | |
f17701fb | 65 | struct lttng_kernel_function_tracer ftrace; |
d6d808f3 | 66 | } u; |
38d024ae | 67 | }; |
c099397a | 68 | |
80c16bcf MD |
69 | struct lttng_kernel_tracer_version { |
70 | uint32_t version; | |
71 | uint32_t patchlevel; | |
72 | uint32_t sublevel; | |
73 | }; | |
74 | ||
12a313a5 | 75 | enum lttng_kernel_context_type { |
4c183524 MD |
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, | |
8070f5c0 MD |
86 | }; |
87 | ||
88 | struct lttng_kernel_perf_counter_ctx { | |
89 | uint32_t type; | |
90 | uint64_t config; | |
c24a0d71 | 91 | char name[LTTNG_SYM_NAME_LEN]; |
8070f5c0 MD |
92 | }; |
93 | ||
94 | struct lttng_kernel_context { | |
12a313a5 | 95 | enum lttng_kernel_context_type ctx; |
8070f5c0 | 96 | union { |
8070f5c0 MD |
97 | struct lttng_kernel_perf_counter_ctx perf_counter; |
98 | } u; | |
99 | }; | |
100 | ||
33749530 | 101 | /* LTTng file descriptor ioctl */ |
ab2277d6 | 102 | #define LTTNG_KERNEL_SESSION _IO(0xF6, 0x40) |
33749530 MD |
103 | #define LTTNG_KERNEL_TRACER_VERSION \ |
104 | _IOR(0xF6, 0x41, struct lttng_kernel_tracer_version) | |
271b6681 | 105 | #define LTTNG_KERNEL_TRACEPOINT_LIST _IO(0xF6, 0x42) |
360f38ea | 106 | #define LTTNG_KERNEL_WAIT_QUIESCENT _IO(0xF6, 0x43) |
33749530 MD |
107 | |
108 | /* Session FD ioctl */ | |
109 | #define LTTNG_KERNEL_METADATA \ | |
110 | _IOW(0xF6, 0x50, struct lttng_kernel_channel) | |
ab2277d6 | 111 | #define LTTNG_KERNEL_CHANNEL \ |
33749530 MD |
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) | |
115 | ||
116 | /* Channel FD ioctl */ | |
117 | #define LTTNG_KERNEL_STREAM _IO(0xF6, 0x60) | |
ab2277d6 | 118 | #define LTTNG_KERNEL_EVENT \ |
33749530 | 119 | _IOW(0xF6, 0x61, struct lttng_kernel_event) |
57a13317 | 120 | |
8070f5c0 MD |
121 | /* Event and Channel FD ioctl */ |
122 | #define LTTNG_KERNEL_CONTEXT \ | |
123 | _IOW(0xF6, 0x70, struct lttng_kernel_context) | |
124 | ||
e64957da MD |
125 | /* Event, Channel and Session ioctl */ |
126 | #define LTTNG_KERNEL_ENABLE _IO(0xF6, 0x80) | |
127 | #define LTTNG_KERNEL_DISABLE _IO(0xF6, 0x81) | |
128 | ||
57a13317 | 129 | #endif /* _LTT_DEBUGFS_ABI_H */ |