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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 | |
18 | #define inline inline __attribute__((always_inline)) |
19 | |
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20 | #if defined(__powerpc__) || defined(__powerpc64__) |
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21 | #ifdef __powerpc64__ |
22 | #include <ltt/atomic-ppc64.h> |
23 | #include <ltt/system-ppc64.h> |
24 | #include <asm/timex.h> |
25 | #else |
26 | #include <ltt/ppc_asm-ppc.h> |
27 | #include <ltt/atomic-ppc.h> |
28 | #include <ltt/system-ppc.h> |
29 | #include <ltt/timex-ppc.h> |
30 | #endif |
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31 | #elif defined(__x86_64__) |
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32 | #include <ltt/kernelutils-x86_64.h> |
33 | #elif defined(__i386__) |
34 | #include <ltt/kernelutils-i386.h> |
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35 | #else |
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36 | #error "Unsupported architecture" |
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37 | #endif |
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38 | |
39 | #ifndef min |
40 | #define min(a,b) ((a)<(b)?(a):(b)) |
41 | #endif |
42 | |
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43 | #ifdef i386 |
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44 | #define __NR_ltt_trace_generic 317 |
45 | #define __NR_ltt_register_generic 318 |
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46 | #undef NR_syscalls |
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47 | #define NR_syscalls 319 |
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48 | #endif |
49 | |
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50 | #ifdef __x86_64__ |
51 | #define __NR_ltt_trace_generic 279 |
52 | #define __NR_ltt_register_generic 280 |
53 | #undef NR_syscalls |
54 | #define NR_syscalls 281 |
55 | #endif |
56 | |
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57 | #ifdef __powerpc__ |
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58 | #define __NR_ltt_trace_generic 301 |
59 | #define __NR_ltt_register_generic 302 |
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60 | #undef NR_syscalls |
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61 | #define NR_syscalls 303 |
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62 | #endif |
63 | |
64 | #ifdef __powerpc64__ |
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65 | #define __NR_ltt_trace_generic 301 |
66 | #define __NR_ltt_register_generic 302 |
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67 | #undef NR_syscalls |
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68 | #define NR_syscalls 303 |
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69 | #endif |
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70 | |
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71 | |
72 | |
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73 | //FIXME : setup for ARM |
74 | //FIXME : setup for MIPS |
75 | |
76 | #ifndef _LIBC |
77 | // Put in bits/syscall.h |
78 | #define SYS_ltt_trace_generic __NR_ltt_trace_generic |
79 | #define SYS_ltt_register_generic __NR_ltt_register_generic |
80 | #endif |
81 | |
82 | #define FACNAME_LEN 32 |
83 | |
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84 | /* LTT userspace tracing is non blocking by default when buffers are full */ |
85 | #ifndef LTT_BLOCKING |
86 | #define LTT_BLOCKING 0 |
87 | #endif //LTT_BLOCKING |
88 | |
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89 | typedef unsigned int ltt_facility_t; |
90 | |
91 | struct user_facility_info { |
92 | char name[FACNAME_LEN]; |
93 | unsigned int num_events; |
94 | size_t alignment; |
95 | uint32_t checksum; |
96 | size_t int_size; |
97 | size_t long_size; |
98 | size_t pointer_size; |
99 | size_t size_t_size; |
100 | }; |
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101 | #if 0 |
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102 | static inline __attribute__((no_instrument_function)) |
103 | _syscall5(int, ltt_trace_generic, unsigned int, facility_id, |
104 | unsigned int, event_id, void *, data, size_t, data_size, int, blocking) |
105 | static inline __attribute__((no_instrument_function)) |
106 | _syscall2(int, ltt_register_generic, unsigned int *, facility_id, |
107 | const struct user_facility_info *, info) |
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108 | #endif //0 |
109 | |
110 | #define ltt_register_generic(...) syscall(__NR_ltt_register_generic, __VA_ARGS__) |
111 | #define ltt_trace_generic(...) syscall(__NR_ltt_trace_generic, __VA_ARGS__) |
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112 | |
113 | #ifndef LTT_PACK |
114 | /* Calculate the offset needed to align the type */ |
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115 | static inline unsigned int __attribute__((no_instrument_function)) |
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116 | ltt_align(size_t align_drift, size_t size_of_type) |
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117 | { |
118 | size_t alignment = min(sizeof(void*), size_of_type); |
119 | |
120 | return ((alignment - align_drift) & (alignment-1)); |
121 | } |
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122 | #define LTT_ALIGN |
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123 | #else |
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124 | static inline unsigned int __attribute__((no_instrument_function)) |
125 | ltt_align(size_t align_drift, |
126 | size_t size_of_type) |
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127 | { |
128 | return 0; |
129 | } |
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130 | #define LTT_ALIGN __attribute__((packed)) |
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131 | #endif //LTT_PACK |
132 | |
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133 | #ifdef LTT_TRACE_FAST |
134 | #include <ltt/ltt-usertrace-fast.h> |
135 | #endif //LTT_TRACE_FAST |
136 | |
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137 | #endif //_LTT_USERTRACE_H |
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138 | |
139 | |