87f4ec6d1f367d76791855c58f25b432d0b769f2
[~shefty/rdma-dev.git] / tools / perf / perf.h
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 #define CPUINFO_PROC    "model name"
13 #ifndef __NR_perf_event_open
14 # define __NR_perf_event_open 336
15 #endif
16 #endif
17
18 #if defined(__x86_64__)
19 #include "../../arch/x86/include/asm/unistd.h"
20 #define rmb()           asm volatile("lfence" ::: "memory")
21 #define cpu_relax()     asm volatile("rep; nop" ::: "memory");
22 #define CPUINFO_PROC    "model name"
23 #ifndef __NR_perf_event_open
24 # define __NR_perf_event_open 298
25 #endif
26 #endif
27
28 #ifdef __powerpc__
29 #include "../../arch/powerpc/include/asm/unistd.h"
30 #define rmb()           asm volatile ("sync" ::: "memory")
31 #define cpu_relax()     asm volatile ("" ::: "memory");
32 #define CPUINFO_PROC    "cpu"
33 #endif
34
35 #ifdef __s390__
36 #include "../../arch/s390/include/asm/unistd.h"
37 #define rmb()           asm volatile("bcr 15,0" ::: "memory")
38 #define cpu_relax()     asm volatile("" ::: "memory");
39 #endif
40
41 #ifdef __sh__
42 #include "../../arch/sh/include/asm/unistd.h"
43 #if defined(__SH4A__) || defined(__SH5__)
44 # define rmb()          asm volatile("synco" ::: "memory")
45 #else
46 # define rmb()          asm volatile("" ::: "memory")
47 #endif
48 #define cpu_relax()     asm volatile("" ::: "memory")
49 #define CPUINFO_PROC    "cpu type"
50 #endif
51
52 #ifdef __hppa__
53 #include "../../arch/parisc/include/asm/unistd.h"
54 #define rmb()           asm volatile("" ::: "memory")
55 #define cpu_relax()     asm volatile("" ::: "memory");
56 #define CPUINFO_PROC    "cpu"
57 #endif
58
59 #ifdef __sparc__
60 #include "../../arch/sparc/include/asm/unistd.h"
61 #define rmb()           asm volatile("":::"memory")
62 #define cpu_relax()     asm volatile("":::"memory")
63 #define CPUINFO_PROC    "cpu"
64 #endif
65
66 #ifdef __alpha__
67 #include "../../arch/alpha/include/asm/unistd.h"
68 #define rmb()           asm volatile("mb" ::: "memory")
69 #define cpu_relax()     asm volatile("" ::: "memory")
70 #define CPUINFO_PROC    "cpu model"
71 #endif
72
73 #ifdef __ia64__
74 #include "../../arch/ia64/include/asm/unistd.h"
75 #define rmb()           asm volatile ("mf" ::: "memory")
76 #define cpu_relax()     asm volatile ("hint @pause" ::: "memory")
77 #define CPUINFO_PROC    "model name"
78 #endif
79
80 #ifdef __arm__
81 #include "../../arch/arm/include/asm/unistd.h"
82 /*
83  * Use the __kuser_memory_barrier helper in the CPU helper page. See
84  * arch/arm/kernel/entry-armv.S in the kernel source for details.
85  */
86 #define rmb()           ((void(*)(void))0xffff0fa0)()
87 #define cpu_relax()     asm volatile("":::"memory")
88 #define CPUINFO_PROC    "Processor"
89 #endif
90
91 #ifdef __mips__
92 #include "../../arch/mips/include/asm/unistd.h"
93 #define rmb()           asm volatile(                                   \
94                                 ".set   mips2\n\t"                      \
95                                 "sync\n\t"                              \
96                                 ".set   mips0"                          \
97                                 : /* no output */                       \
98                                 : /* no input */                        \
99                                 : "memory")
100 #define cpu_relax()     asm volatile("" ::: "memory")
101 #define CPUINFO_PROC    "cpu model"
102 #endif
103
104 #include <time.h>
105 #include <unistd.h>
106 #include <sys/types.h>
107 #include <sys/syscall.h>
108
109 #include "../../include/linux/perf_event.h"
110 #include "util/types.h"
111 #include <stdbool.h>
112
113 struct perf_mmap {
114         void                    *base;
115         int                     mask;
116         unsigned int            prev;
117 };
118
119 static inline unsigned int perf_mmap__read_head(struct perf_mmap *mm)
120 {
121         struct perf_event_mmap_page *pc = mm->base;
122         int head = pc->data_head;
123         rmb();
124         return head;
125 }
126
127 static inline void perf_mmap__write_tail(struct perf_mmap *md,
128                                          unsigned long tail)
129 {
130         struct perf_event_mmap_page *pc = md->base;
131
132         /*
133          * ensure all reads are done before we write the tail out.
134          */
135         /* mb(); */
136         pc->data_tail = tail;
137 }
138
139 /*
140  * prctl(PR_TASK_PERF_EVENTS_DISABLE) will (cheaply) disable all
141  * counters in the current task.
142  */
143 #define PR_TASK_PERF_EVENTS_DISABLE   31
144 #define PR_TASK_PERF_EVENTS_ENABLE    32
145
146 #ifndef NSEC_PER_SEC
147 # define NSEC_PER_SEC                   1000000000ULL
148 #endif
149
150 static inline unsigned long long rdclock(void)
151 {
152         struct timespec ts;
153
154         clock_gettime(CLOCK_MONOTONIC, &ts);
155         return ts.tv_sec * 1000000000ULL + ts.tv_nsec;
156 }
157
158 /*
159  * Pick up some kernel type conventions:
160  */
161 #define __user
162 #define asmlinkage
163
164 #define unlikely(x)     __builtin_expect(!!(x), 0)
165 #define min(x, y) ({                            \
166         typeof(x) _min1 = (x);                  \
167         typeof(y) _min2 = (y);                  \
168         (void) (&_min1 == &_min2);              \
169         _min1 < _min2 ? _min1 : _min2; })
170
171 static inline int
172 sys_perf_event_open(struct perf_event_attr *attr,
173                       pid_t pid, int cpu, int group_fd,
174                       unsigned long flags)
175 {
176         return syscall(__NR_perf_event_open, attr, pid, cpu,
177                        group_fd, flags);
178 }
179
180 #define MAX_COUNTERS                    256
181 #define MAX_NR_CPUS                     256
182
183 struct ip_callchain {
184         u64 nr;
185         u64 ips[0];
186 };
187
188 struct branch_flags {
189         u64 mispred:1;
190         u64 predicted:1;
191         u64 reserved:62;
192 };
193
194 struct branch_entry {
195         u64                             from;
196         u64                             to;
197         struct branch_flags flags;
198 };
199
200 struct branch_stack {
201         u64                             nr;
202         struct branch_entry     entries[0];
203 };
204
205 extern bool perf_host, perf_guest;
206 extern const char perf_version_string[];
207
208 void pthread__unblock_sigwinch(void);
209
210 #include "util/target.h"
211
212 enum perf_call_graph_mode {
213         CALLCHAIN_NONE,
214         CALLCHAIN_FP,
215         CALLCHAIN_DWARF
216 };
217
218 struct perf_record_opts {
219         struct perf_target target;
220         int          call_graph;
221         bool         group;
222         bool         inherit_stat;
223         bool         no_delay;
224         bool         no_inherit;
225         bool         no_samples;
226         bool         pipe_output;
227         bool         raw_samples;
228         bool         sample_address;
229         bool         sample_time;
230         bool         sample_id_all_missing;
231         bool         exclude_guest_missing;
232         bool         period;
233         unsigned int freq;
234         unsigned int mmap_pages;
235         unsigned int user_freq;
236         u64          branch_stack;
237         u64          default_interval;
238         u64          user_interval;
239         u16          stack_dump_size;
240 };
241
242 #endif