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1 | #ifndef _PERF_PERF_H |
2 | #define _PERF_PERF_H |
3 | |
4 | struct winsize; |
5 | |
6 | void get_term_dimensions(struct winsize *ws); |
7 | |
8 | #if defined(__i386__) |
9 | #include "../../arch/x86/include/asm/unistd.h" |
10 | #define rmb() asm volatile("lock; addl $0,0(%%esp)" ::: "memory") |
11 | #define cpu_relax() asm volatile("rep; nop" ::: "memory"); |
12 | #endif |
13 | |
14 | #if defined(__x86_64__) |
15 | #include "../../arch/x86/include/asm/unistd.h" |
16 | #define rmb() asm volatile("lfence" ::: "memory") |
17 | #define cpu_relax() asm volatile("rep; nop" ::: "memory"); |
18 | #endif |
19 | |
20 | #ifdef __powerpc__ |
21 | #include "../../arch/powerpc/include/asm/unistd.h" |
22 | #define rmb() asm volatile ("sync" ::: "memory") |
23 | #define cpu_relax() asm volatile ("" ::: "memory"); |
24 | #endif |
25 | |
26 | #ifdef __s390__ |
27 | #include "../../arch/s390/include/asm/unistd.h" |
28 | #define rmb() asm volatile("bcr 15,0" ::: "memory") |
29 | #define cpu_relax() asm volatile("" ::: "memory"); |
30 | #endif |
31 | |
32 | #ifdef __sh__ |
33 | #include "../../arch/sh/include/asm/unistd.h" |
34 | #if defined(__SH4A__) || defined(__SH5__) |
35 | # define rmb() asm volatile("synco" ::: "memory") |
36 | #else |
37 | # define rmb() asm volatile("" ::: "memory") |
38 | #endif |
39 | #define cpu_relax() asm volatile("" ::: "memory") |
40 | #endif |
41 | |
42 | #ifdef __hppa__ |
43 | #include "../../arch/parisc/include/asm/unistd.h" |
44 | #define rmb() asm volatile("" ::: "memory") |
45 | #define cpu_relax() asm volatile("" ::: "memory"); |
46 | #endif |
47 | |
48 | #ifdef __sparc__ |
49 | #include "../../arch/sparc/include/asm/unistd.h" |
50 | #define rmb() asm volatile("":::"memory") |
51 | #define cpu_relax() asm volatile("":::"memory") |
52 | #endif |
53 | |
54 | #ifdef __alpha__ |
55 | #include "../../arch/alpha/include/asm/unistd.h" |
56 | #define rmb() asm volatile("mb" ::: "memory") |
57 | #define cpu_relax() asm volatile("" ::: "memory") |
58 | #endif |
59 | |
60 | #ifdef __ia64__ |
61 | #include "../../arch/ia64/include/asm/unistd.h" |
62 | #define rmb() asm volatile ("mf" ::: "memory") |
63 | #define cpu_relax() asm volatile ("hint @pause" ::: "memory") |
64 | #endif |
65 | |
66 | #ifdef __arm__ |
67 | #include "../../arch/arm/include/asm/unistd.h" |
68 | /* |
69 | * Use the __kuser_memory_barrier helper in the CPU helper page. See |
70 | * arch/arm/kernel/entry-armv.S in the kernel source for details. |
71 | */ |
72 | #define rmb() ((void(*)(void))0xffff0fa0)() |
73 | #define cpu_relax() asm volatile("":::"memory") |
74 | #endif |
75 | |
76 | #ifdef __mips__ |
77 | #include "../../arch/mips/include/asm/unistd.h" |
78 | #define rmb() asm volatile( \ |
79 | ".set mips2\n\t" \ |
80 | "sync\n\t" \ |
81 | ".set mips0" \ |
82 | : /* no output */ \ |
83 | : /* no input */ \ |
84 | : "memory") |
85 | #define cpu_relax() asm volatile("" ::: "memory") |
86 | #endif |
87 | |
88 | #include <time.h> |
89 | #include <unistd.h> |
90 | #include <sys/types.h> |
91 | #include <sys/syscall.h> |
92 | |
93 | #include "../../include/linux/perf_event.h" |
94 | #include "util/types.h" |
95 | #include <stdbool.h> |
96 | |
97 | struct perf_mmap { |
98 | void *base; |
99 | int mask; |
100 | unsigned int prev; |
101 | }; |
102 | |
103 | static inline unsigned int perf_mmap__read_head(struct perf_mmap *mm) |
104 | { |
105 | struct perf_event_mmap_page *pc = mm->base; |
106 | int head = pc->data_head; |
107 | rmb(); |
108 | return head; |
109 | } |
110 | |
111 | static inline void perf_mmap__write_tail(struct perf_mmap *md, |
112 | unsigned long tail) |
113 | { |
114 | struct perf_event_mmap_page *pc = md->base; |
115 | |
116 | /* |
117 | * ensure all reads are done before we write the tail out. |
118 | */ |
119 | /* mb(); */ |
120 | pc->data_tail = tail; |
121 | } |
122 | |
123 | /* |
124 | * prctl(PR_TASK_PERF_EVENTS_DISABLE) will (cheaply) disable all |
125 | * counters in the current task. |
126 | */ |
127 | #define PR_TASK_PERF_EVENTS_DISABLE 31 |
128 | #define PR_TASK_PERF_EVENTS_ENABLE 32 |
129 | |
130 | #ifndef NSEC_PER_SEC |
131 | # define NSEC_PER_SEC 1000000000ULL |
132 | #endif |
133 | |
134 | static inline unsigned long long rdclock(void) |
135 | { |
136 | struct timespec ts; |
137 | |
138 | clock_gettime(CLOCK_MONOTONIC, &ts); |
139 | return ts.tv_sec * 1000000000ULL + ts.tv_nsec; |
140 | } |
141 | |
142 | /* |
143 | * Pick up some kernel type conventions: |
144 | */ |
145 | #define __user |
146 | #define asmlinkage |
147 | |
148 | #define unlikely(x) __builtin_expect(!!(x), 0) |
149 | #define min(x, y) ({ \ |
150 | typeof(x) _min1 = (x); \ |
151 | typeof(y) _min2 = (y); \ |
152 | (void) (&_min1 == &_min2); \ |
153 | _min1 < _min2 ? _min1 : _min2; }) |
154 | |
155 | static inline int |
156 | sys_perf_event_open(struct perf_event_attr *attr, |
157 | pid_t pid, int cpu, int group_fd, |
158 | unsigned long flags) |
159 | { |
160 | attr->size = sizeof(*attr); |
161 | return syscall(__NR_perf_event_open, attr, pid, cpu, |
162 | group_fd, flags); |
163 | } |
164 | |
165 | #define MAX_COUNTERS 256 |
166 | #define MAX_NR_CPUS 256 |
167 | |
168 | struct ip_callchain { |
169 | u64 nr; |
170 | u64 ips[0]; |
171 | }; |
172 | |
173 | extern bool perf_host, perf_guest; |
174 | |
175 | #endif |
176 |
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od-2011-09-04
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v2.6.34-rc5
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