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1 | /***************************************************************************** |
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2 | * ltt-usertrace.h |
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3 | * |
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4 | * LTT userspace tracing header |
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5 | * |
6 | * Mathieu Desnoyers, March 2006 |
7 | */ |
8 | |
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9 | #ifndef _LTT_USERTRACE_H |
10 | #define _LTT_USERTRACE_H |
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11 | |
12 | #include <errno.h> |
13 | #include <syscall.h> |
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14 | #include <string.h> |
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15 | #include <stdint.h> |
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16 | #include <sys/types.h> |
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17 | |
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18 | #ifdef __cplusplus |
19 | extern "C" { |
20 | #endif |
21 | |
22 | |
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23 | #define inline inline __attribute__((always_inline)) |
24 | |
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25 | #if defined(__powerpc__) || defined(__powerpc64__) |
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26 | #ifdef __powerpc64__ |
27 | #include <ltt/atomic-ppc64.h> |
28 | #include <ltt/system-ppc64.h> |
29 | #include <asm/timex.h> |
30 | #else |
31 | #include <ltt/ppc_asm-ppc.h> |
32 | #include <ltt/atomic-ppc.h> |
33 | #include <ltt/system-ppc.h> |
34 | #include <ltt/timex-ppc.h> |
35 | #endif |
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36 | #elif defined(__x86_64__) |
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37 | #include <ltt/kernelutils-x86_64.h> |
38 | #elif defined(__i386__) |
39 | #include <ltt/kernelutils-i386.h> |
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40 | #elif defined(__arm__) |
41 | #include <ltt/kernelutils-arm.h> |
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42 | #else |
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43 | #error "Unsupported architecture" |
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44 | #endif |
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45 | |
46 | #ifndef min |
47 | #define min(a,b) ((a)<(b)?(a):(b)) |
48 | #endif |
49 | |
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50 | #ifdef i386 |
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51 | #define __NR_ltt_trace_generic 320 |
52 | #define __NR_ltt_register_generic 321 |
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53 | #undef NR_syscalls |
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54 | #define NR_syscalls 322 |
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55 | #endif |
56 | |
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57 | #ifdef __x86_64__ |
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58 | #define __NR_ltt_trace_generic 281 |
59 | #define __NR_ltt_register_generic 281 |
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60 | #undef NR_syscalls |
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61 | #define NR_syscalls 282 |
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62 | #endif |
63 | |
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64 | #ifdef __powerpc__ |
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65 | #define __NR_ltt_trace_generic 302 |
66 | #define __NR_ltt_register_generic 303 |
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67 | #undef NR_syscalls |
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68 | #define NR_syscalls 304 |
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69 | #endif |
70 | |
71 | #ifdef __powerpc64__ |
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72 | #define __NR_ltt_trace_generic 302 |
73 | #define __NR_ltt_register_generic 303 |
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74 | #undef NR_syscalls |
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75 | #define NR_syscalls 304 |
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76 | #endif |
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77 | |
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78 | #ifdef __arm__ |
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79 | #define __NR_ltt_trace_generic 347 |
80 | #define __NR_ltt_register_generic 348 |
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81 | #undef NR_syscalls |
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82 | #define NR_syscalls 349 |
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83 | #endif |
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84 | |
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85 | //FIXME : setup for MIPS |
86 | |
87 | #ifndef _LIBC |
88 | // Put in bits/syscall.h |
89 | #define SYS_ltt_trace_generic __NR_ltt_trace_generic |
90 | #define SYS_ltt_register_generic __NR_ltt_register_generic |
91 | #endif |
92 | |
93 | #define FACNAME_LEN 32 |
94 | |
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95 | /* LTT userspace tracing is non blocking by default when buffers are full */ |
96 | #ifndef LTT_BLOCKING |
97 | #define LTT_BLOCKING 0 |
98 | #endif //LTT_BLOCKING |
99 | |
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100 | typedef unsigned int ltt_facility_t; |
101 | |
102 | struct user_facility_info { |
103 | char name[FACNAME_LEN]; |
104 | unsigned int num_events; |
105 | size_t alignment; |
106 | uint32_t checksum; |
107 | size_t int_size; |
108 | size_t long_size; |
109 | size_t pointer_size; |
110 | size_t size_t_size; |
111 | }; |
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112 | #if 0 |
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113 | static inline __attribute__((no_instrument_function)) |
114 | _syscall5(int, ltt_trace_generic, unsigned int, facility_id, |
115 | unsigned int, event_id, void *, data, size_t, data_size, int, blocking) |
116 | static inline __attribute__((no_instrument_function)) |
117 | _syscall2(int, ltt_register_generic, unsigned int *, facility_id, |
118 | const struct user_facility_info *, info) |
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119 | #endif //0 |
120 | |
121 | #define ltt_register_generic(...) syscall(__NR_ltt_register_generic, __VA_ARGS__) |
122 | #define ltt_trace_generic(...) syscall(__NR_ltt_trace_generic, __VA_ARGS__) |
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123 | |
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124 | static inline unsigned int __attribute__((no_instrument_function)) |
125 | ltt_align(size_t align_drift, size_t size_of_type); |
126 | |
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127 | #ifndef LTT_PACK |
128 | /* Calculate the offset needed to align the type */ |
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129 | static inline unsigned int |
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130 | ltt_align(size_t align_drift, size_t size_of_type) |
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131 | { |
132 | size_t alignment = min(sizeof(void*), size_of_type); |
133 | |
134 | return ((alignment - align_drift) & (alignment-1)); |
135 | } |
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136 | #define LTT_ALIGN |
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137 | #else |
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138 | static inline unsigned int ltt_align(size_t align_drift, size_t size_of_type) |
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139 | { |
140 | return 0; |
141 | } |
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142 | #define LTT_ALIGN __attribute__((packed)) |
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143 | #endif //LTT_PACK |
144 | |
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145 | #ifdef __cplusplus |
146 | } /* end of extern "C" */ |
147 | #endif |
148 | |
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149 | #ifdef LTT_TRACE_FAST |
150 | #include <ltt/ltt-usertrace-fast.h> |
151 | #endif //LTT_TRACE_FAST |
152 | |
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153 | #endif //_LTT_USERTRACE_H |