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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 | #else |
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41 | #error "Unsupported architecture" |
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42 | #endif |
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43 | |
44 | #ifndef min |
45 | #define min(a,b) ((a)<(b)?(a):(b)) |
46 | #endif |
47 | |
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48 | #ifdef i386 |
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49 | #define __NR_ltt_trace_generic 318 |
50 | #define __NR_ltt_register_generic 319 |
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51 | #undef NR_syscalls |
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52 | #define NR_syscalls 320 |
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53 | #endif |
54 | |
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55 | #ifdef __x86_64__ |
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56 | #define __NR_ltt_trace_generic 281 |
57 | #define __NR_ltt_register_generic 281 |
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58 | #undef NR_syscalls |
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59 | #define NR_syscalls 282 |
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60 | #endif |
61 | |
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62 | #ifdef __powerpc__ |
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63 | #define __NR_ltt_trace_generic 301 |
64 | #define __NR_ltt_register_generic 302 |
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65 | #undef NR_syscalls |
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66 | #define NR_syscalls 303 |
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67 | #endif |
68 | |
69 | #ifdef __powerpc64__ |
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70 | #define __NR_ltt_trace_generic 301 |
71 | #define __NR_ltt_register_generic 302 |
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72 | #undef NR_syscalls |
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73 | #define NR_syscalls 303 |
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74 | #endif |
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75 | |
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76 | |
77 | |
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78 | //FIXME : setup for ARM |
79 | //FIXME : setup for MIPS |
80 | |
81 | #ifndef _LIBC |
82 | // Put in bits/syscall.h |
83 | #define SYS_ltt_trace_generic __NR_ltt_trace_generic |
84 | #define SYS_ltt_register_generic __NR_ltt_register_generic |
85 | #endif |
86 | |
87 | #define FACNAME_LEN 32 |
88 | |
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89 | /* LTT userspace tracing is non blocking by default when buffers are full */ |
90 | #ifndef LTT_BLOCKING |
91 | #define LTT_BLOCKING 0 |
92 | #endif //LTT_BLOCKING |
93 | |
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94 | typedef unsigned int ltt_facility_t; |
95 | |
96 | struct user_facility_info { |
97 | char name[FACNAME_LEN]; |
98 | unsigned int num_events; |
99 | size_t alignment; |
100 | uint32_t checksum; |
101 | size_t int_size; |
102 | size_t long_size; |
103 | size_t pointer_size; |
104 | size_t size_t_size; |
105 | }; |
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106 | #if 0 |
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107 | static inline __attribute__((no_instrument_function)) |
108 | _syscall5(int, ltt_trace_generic, unsigned int, facility_id, |
109 | unsigned int, event_id, void *, data, size_t, data_size, int, blocking) |
110 | static inline __attribute__((no_instrument_function)) |
111 | _syscall2(int, ltt_register_generic, unsigned int *, facility_id, |
112 | const struct user_facility_info *, info) |
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113 | #endif //0 |
114 | |
115 | #define ltt_register_generic(...) syscall(__NR_ltt_register_generic, __VA_ARGS__) |
116 | #define ltt_trace_generic(...) syscall(__NR_ltt_trace_generic, __VA_ARGS__) |
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117 | |
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118 | static inline unsigned int __attribute__((no_instrument_function)) |
119 | ltt_align(size_t align_drift, size_t size_of_type); |
120 | |
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121 | #ifndef LTT_PACK |
122 | /* Calculate the offset needed to align the type */ |
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123 | static inline unsigned int |
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124 | ltt_align(size_t align_drift, size_t size_of_type) |
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125 | { |
126 | size_t alignment = min(sizeof(void*), size_of_type); |
127 | |
128 | return ((alignment - align_drift) & (alignment-1)); |
129 | } |
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130 | #define LTT_ALIGN |
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131 | #else |
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132 | static inline unsigned int ltt_align(size_t align_drift, size_t size_of_type) |
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133 | { |
134 | return 0; |
135 | } |
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136 | #define LTT_ALIGN __attribute__((packed)) |
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137 | #endif //LTT_PACK |
138 | |
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139 | #ifdef __cplusplus |
140 | } /* end of extern "C" */ |
141 | #endif |
142 | |
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143 | #ifdef LTT_TRACE_FAST |
144 | #include <ltt/ltt-usertrace-fast.h> |
145 | #endif //LTT_TRACE_FAST |
146 | |
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147 | #endif //_LTT_USERTRACE_H |