projects / lttng-modules.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 | ||
| e0a7a7c4 | 14 | #define LTTNG_SYM_NAME_LEN 128 |
| d6d808f3 | 15 | |
| 38d024ae MD |
16 | enum lttng_kernel_instrumentation { |
| 17 | LTTNG_KERNEL_TRACEPOINTS, | |
| 18 | LTTNG_KERNEL_KPROBES, | |
| f17701fb | 19 | LTTNG_KERNEL_FUNCTION_TRACER, |
| 57a13317 MD |
20 | }; |
| 21 | ||
| 22 | /* | |
| 23 | * LTTng DebugFS ABI structures. | |
| 24 | */ | |
| 25 | ||
| 38d024ae | 26 | struct lttng_kernel_channel { |
| 57a13317 | 27 | int overwrite; /* 1: overwrite, 0: discard */ |
| 80c16bcf MD |
28 | uint64_t subbuf_size; |
| 29 | uint64_t num_subbuf; | |
| 57a13317 MD |
30 | unsigned int switch_timer_interval; |
| 31 | unsigned int read_timer_interval; | |
| 32 | }; | |
| 33 | ||
| 38d024ae MD |
34 | /* |
| 35 | * Either addr is used, or symbol_name and offset. | |
| 36 | */ | |
| 37 | struct lttng_kernel_kprobe { | |
| 80c16bcf | 38 | uint64_t addr; |
| 38d024ae | 39 | |
| 80c16bcf | 40 | uint64_t offset; |
| e0a7a7c4 | 41 | char symbol_name[LTTNG_SYM_NAME_LEN]; |
| d6d808f3 MD |
42 | }; |
| 43 | ||
| f17701fb | 44 | struct lttng_kernel_function_tracer { |
| e0a7a7c4 | 45 | char symbol_name[LTTNG_SYM_NAME_LEN]; |
| f17701fb MD |
46 | }; |
| 47 | ||
| d6d808f3 MD |
48 | struct lttng_kernel_event { |
| 49 | enum lttng_kernel_instrumentation instrumentation; | |
| 50 | /* Per instrumentation type configuration */ | |
| 51 | union { | |
| 52 | struct lttng_kernel_kprobe kprobe; | |
| f17701fb | 53 | struct lttng_kernel_function_tracer ftrace; |
| d6d808f3 | 54 | } u; |
| f17701fb | 55 | char name[]; /* event name */ |
| 38d024ae | 56 | }; |
| c099397a | 57 | |
| 80c16bcf MD |
58 | struct lttng_kernel_tracer_version { |
| 59 | uint32_t version; | |
| 60 | uint32_t patchlevel; | |
| 61 | uint32_t sublevel; | |
| 62 | }; | |
| 63 | ||
| 38d024ae MD |
64 | #define LTTNG_KERNEL_SESSION _IO(0xF6, 0x40) |
| 65 | #define LTTNG_KERNEL_SESSION_START _IO(0xF6, 0x41) | |
| 66 | #define LTTNG_KERNEL_SESSION_STOP _IO(0xF6, 0x42) | |
| 67 | #define LTTNG_KERNEL_CHANNEL \ | |
| 68 | _IOW(0xF6, 0x43, struct lttng_kernel_channel) | |
| 69 | #define LTTNG_KERNEL_STREAM _IO(0xF6, 0x44) | |
| 70 | #define LTTNG_KERNEL_EVENT \ | |
| 71 | _IOW(0xF6, 0x45, struct lttng_kernel_event) | |
| 72 | #define LTTNG_KERNEL_METADATA \ | |
| 73 | _IOW(0xF6, 0x46, struct lttng_kernel_channel) | |
| 74 | #define LTTNG_KERNEL_KPROBE \ | |
| 75 | _IOW(0xF6, 0x47, struct lttng_kernel_kprobe) | |
| 76 | #define LTTNG_KERNEL_TRACER_VERSION \ | |
| 80c16bcf | 77 | _IOR(0xF6, 0x48, struct lttng_kernel_tracer_version) |
| 57a13317 MD |
78 | |
| 79 | #endif /* _LTT_DEBUGFS_ABI_H */ |