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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> |
17 | #include <linux/unistd.h> |
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18 | |
19 | #define inline inline __attribute__((always_inline)) |
20 | |
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21 | #if defined(__powerpc__) || defined(__powerpc64__) |
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22 | #ifdef __powerpc64__ |
23 | #include <ltt/atomic-ppc64.h> |
24 | #include <ltt/system-ppc64.h> |
25 | #include <asm/timex.h> |
26 | #else |
27 | #include <ltt/ppc_asm-ppc.h> |
28 | #include <ltt/atomic-ppc.h> |
29 | #include <ltt/system-ppc.h> |
30 | #include <ltt/timex-ppc.h> |
31 | #endif |
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32 | #elif defined(__x86_64__) |
33 | #include <asm/timex.h> |
34 | #include <asm/bitops.h> |
35 | #include <asm/atomic.h> |
36 | #include <asm/system.h> |
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37 | #else |
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38 | #include <asm/timex.h> |
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39 | #include <asm/atomic.h> |
40 | #endif |
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41 | |
42 | #ifndef min |
43 | #define min(a,b) ((a)<(b)?(a):(b)) |
44 | #endif |
45 | |
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46 | #ifdef i386 |
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47 | #define __NR_ltt_trace_generic 317 |
48 | #define __NR_ltt_register_generic 318 |
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49 | #undef NR_syscalls |
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50 | #define NR_syscalls 319 |
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51 | #endif |
52 | |
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53 | #ifdef __x86_64__ |
54 | #define __NR_ltt_trace_generic 279 |
55 | #define __NR_ltt_register_generic 280 |
56 | #undef NR_syscalls |
57 | #define NR_syscalls 281 |
58 | #endif |
59 | |
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60 | #ifdef __powerpc__ |
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61 | #define __NR_ltt_trace_generic 301 |
62 | #define __NR_ltt_register_generic 302 |
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63 | #undef NR_syscalls |
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64 | #define NR_syscalls 303 |
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65 | #endif |
66 | |
67 | #ifdef __powerpc64__ |
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68 | #define __NR_ltt_trace_generic 301 |
69 | #define __NR_ltt_register_generic 302 |
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70 | #undef NR_syscalls |
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71 | #define NR_syscalls 303 |
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72 | #endif |
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73 | |
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74 | |
75 | |
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76 | //FIXME : setup for ARM |
77 | //FIXME : setup for MIPS |
78 | |
79 | #ifndef _LIBC |
80 | // Put in bits/syscall.h |
81 | #define SYS_ltt_trace_generic __NR_ltt_trace_generic |
82 | #define SYS_ltt_register_generic __NR_ltt_register_generic |
83 | #endif |
84 | |
85 | #define FACNAME_LEN 32 |
86 | |
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87 | /* LTT userspace tracing is non blocking by default when buffers are full */ |
88 | #ifndef LTT_BLOCKING |
89 | #define LTT_BLOCKING 0 |
90 | #endif //LTT_BLOCKING |
91 | |
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92 | typedef unsigned int ltt_facility_t; |
93 | |
94 | struct user_facility_info { |
95 | char name[FACNAME_LEN]; |
96 | unsigned int num_events; |
97 | size_t alignment; |
98 | uint32_t checksum; |
99 | size_t int_size; |
100 | size_t long_size; |
101 | size_t pointer_size; |
102 | size_t size_t_size; |
103 | }; |
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104 | #if 0 |
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105 | static inline __attribute__((no_instrument_function)) |
106 | _syscall5(int, ltt_trace_generic, unsigned int, facility_id, |
107 | unsigned int, event_id, void *, data, size_t, data_size, int, blocking) |
108 | static inline __attribute__((no_instrument_function)) |
109 | _syscall2(int, ltt_register_generic, unsigned int *, facility_id, |
110 | const struct user_facility_info *, info) |
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111 | #endif //0 |
112 | |
113 | #define ltt_register_generic(...) syscall(__NR_ltt_register_generic, __VA_ARGS__) |
114 | #define ltt_trace_generic(...) syscall(__NR_ltt_trace_generic, __VA_ARGS__) |
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115 | |
116 | #ifndef LTT_PACK |
117 | /* Calculate the offset needed to align the type */ |
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118 | static inline unsigned int __attribute__((no_instrument_function)) |
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119 | ltt_align(size_t align_drift, size_t size_of_type) |
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120 | { |
121 | size_t alignment = min(sizeof(void*), size_of_type); |
122 | |
123 | return ((alignment - align_drift) & (alignment-1)); |
124 | } |
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125 | #define LTT_ALIGN |
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126 | #else |
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127 | static inline unsigned int __attribute__((no_instrument_function)) |
128 | ltt_align(size_t align_drift, |
129 | size_t size_of_type) |
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130 | { |
131 | return 0; |
132 | } |
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133 | #define LTT_ALIGN __attribute__((packed)) |
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134 | #endif //LTT_PACK |
135 | |
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136 | #ifdef LTT_TRACE_FAST |
137 | #include <ltt/ltt-usertrace-fast.h> |
138 | #endif //LTT_TRACE_FAST |
139 | |
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140 | #endif //_LTT_USERTRACE_H |
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141 | |
142 | |