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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 | |
10 | */ | |
11 | ||
12 | #include <linux/fs.h> | |
13 | ||
d6d808f3 MD |
14 | #define LTTNG_KPROBE_SYM_NAME_LEN 128 |
15 | ||
38d024ae MD |
16 | enum lttng_kernel_instrumentation { |
17 | LTTNG_KERNEL_TRACEPOINTS, | |
18 | LTTNG_KERNEL_KPROBES, | |
57a13317 MD |
19 | }; |
20 | ||
21 | /* | |
22 | * LTTng DebugFS ABI structures. | |
23 | */ | |
24 | ||
38d024ae | 25 | struct lttng_kernel_channel { |
57a13317 | 26 | int overwrite; /* 1: overwrite, 0: discard */ |
80c16bcf MD |
27 | uint64_t subbuf_size; |
28 | uint64_t num_subbuf; | |
57a13317 MD |
29 | unsigned int switch_timer_interval; |
30 | unsigned int read_timer_interval; | |
31 | }; | |
32 | ||
38d024ae MD |
33 | /* |
34 | * Either addr is used, or symbol_name and offset. | |
35 | */ | |
36 | struct lttng_kernel_kprobe { | |
80c16bcf | 37 | uint64_t addr; |
38d024ae | 38 | |
80c16bcf | 39 | uint64_t offset; |
d6d808f3 MD |
40 | char symbol_name[LTTNG_KPROBE_SYM_NAME_LEN]; |
41 | }; | |
42 | ||
43 | struct lttng_kernel_event { | |
44 | enum lttng_kernel_instrumentation instrumentation; | |
45 | /* Per instrumentation type configuration */ | |
46 | union { | |
47 | struct lttng_kernel_kprobe kprobe; | |
48 | } u; | |
49 | char name[]; | |
38d024ae | 50 | }; |
c099397a | 51 | |
80c16bcf MD |
52 | struct lttng_kernel_tracer_version { |
53 | uint32_t version; | |
54 | uint32_t patchlevel; | |
55 | uint32_t sublevel; | |
56 | }; | |
57 | ||
38d024ae MD |
58 | #define LTTNG_KERNEL_SESSION _IO(0xF6, 0x40) |
59 | #define LTTNG_KERNEL_SESSION_START _IO(0xF6, 0x41) | |
60 | #define LTTNG_KERNEL_SESSION_STOP _IO(0xF6, 0x42) | |
61 | #define LTTNG_KERNEL_CHANNEL \ | |
62 | _IOW(0xF6, 0x43, struct lttng_kernel_channel) | |
63 | #define LTTNG_KERNEL_STREAM _IO(0xF6, 0x44) | |
64 | #define LTTNG_KERNEL_EVENT \ | |
65 | _IOW(0xF6, 0x45, struct lttng_kernel_event) | |
66 | #define LTTNG_KERNEL_METADATA \ | |
67 | _IOW(0xF6, 0x46, struct lttng_kernel_channel) | |
68 | #define LTTNG_KERNEL_KPROBE \ | |
69 | _IOW(0xF6, 0x47, struct lttng_kernel_kprobe) | |
70 | #define LTTNG_KERNEL_TRACER_VERSION \ | |
80c16bcf | 71 | _IOR(0xF6, 0x48, struct lttng_kernel_tracer_version) |
57a13317 MD |
72 | |
73 | #endif /* _LTT_DEBUGFS_ABI_H */ |