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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 | #else |
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33 | #include <asm/timex.h> |
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34 | #include <asm/atomic.h> |
35 | #endif |
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36 | |
37 | #ifndef min |
38 | #define min(a,b) ((a)<(b)?(a):(b)) |
39 | #endif |
40 | |
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41 | #ifdef i386 |
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42 | #define __NR_ltt_trace_generic 311 |
43 | #define __NR_ltt_register_generic 312 |
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44 | #undef NR_syscalls |
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45 | #define NR_syscalls 313 |
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46 | #endif |
47 | |
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48 | #ifdef __powerpc__ |
49 | #define __NR_ltt_trace_generic 283 |
50 | #define __NR_ltt_register_generic 284 |
51 | #undef NR_syscalls |
52 | #define NR_syscalls 285 |
53 | #endif |
54 | |
55 | #ifdef __powerpc64__ |
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56 | #define __NR_ltt_trace_generic 283 |
57 | #define __NR_ltt_register_generic 284 |
58 | #undef NR_syscalls |
59 | #define NR_syscalls 285 |
60 | #endif |
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61 | |
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62 | |
63 | |
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64 | //FIXME : setup for ARM |
65 | //FIXME : setup for MIPS |
66 | |
67 | #ifndef _LIBC |
68 | // Put in bits/syscall.h |
69 | #define SYS_ltt_trace_generic __NR_ltt_trace_generic |
70 | #define SYS_ltt_register_generic __NR_ltt_register_generic |
71 | #endif |
72 | |
73 | #define FACNAME_LEN 32 |
74 | |
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75 | /* LTT userspace tracing is non blocking by default when buffers are full */ |
76 | #ifndef LTT_BLOCKING |
77 | #define LTT_BLOCKING 0 |
78 | #endif //LTT_BLOCKING |
79 | |
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80 | typedef unsigned int ltt_facility_t; |
81 | |
82 | struct user_facility_info { |
83 | char name[FACNAME_LEN]; |
84 | unsigned int num_events; |
85 | size_t alignment; |
86 | uint32_t checksum; |
87 | size_t int_size; |
88 | size_t long_size; |
89 | size_t pointer_size; |
90 | size_t size_t_size; |
91 | }; |
92 | |
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93 | static inline __attribute__((no_instrument_function)) |
94 | _syscall5(int, ltt_trace_generic, unsigned int, facility_id, |
95 | unsigned int, event_id, void *, data, size_t, data_size, int, blocking) |
96 | static inline __attribute__((no_instrument_function)) |
97 | _syscall2(int, ltt_register_generic, unsigned int *, facility_id, |
98 | const struct user_facility_info *, info) |
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99 | |
100 | #ifndef LTT_PACK |
101 | /* Calculate the offset needed to align the type */ |
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102 | static inline unsigned int __attribute__((no_instrument_function)) |
103 | ltt_align(size_t align_drift, |
104 | size_t size_of_type) |
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105 | { |
106 | size_t alignment = min(sizeof(void*), size_of_type); |
107 | |
108 | return ((alignment - align_drift) & (alignment-1)); |
109 | } |
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110 | #define LTT_ALIGN |
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111 | #else |
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112 | static inline unsigned int __attribute__((no_instrument_function)) |
113 | ltt_align(size_t align_drift, |
114 | size_t size_of_type) |
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115 | { |
116 | return 0; |
117 | } |
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118 | #define LTT_ALIGN __attribute__((packed)) |
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119 | #endif //LTT_PACK |
120 | |
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121 | #ifdef LTT_TRACE_FAST |
122 | #include <ltt/ltt-usertrace-fast.h> |
123 | #endif //LTT_TRACE_FAST |
124 | |
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125 | #endif //_LTT_USERTRACE_H |
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126 | |
127 | |