Root/tools/perf/perf.h

1#ifndef _PERF_PERF_H
2#define _PERF_PERF_H
3
4struct winsize;
5
6void 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
113struct perf_mmap {
114    void *base;
115    int mask;
116    unsigned int prev;
117};
118
119static 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
127static 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
150static 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
171static inline int
172sys_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
183struct ip_callchain {
184    u64 nr;
185    u64 ips[0];
186};
187
188struct branch_flags {
189    u64 mispred:1;
190    u64 predicted:1;
191    u64 reserved:62;
192};
193
194struct branch_entry {
195    u64 from;
196    u64 to;
197    struct branch_flags flags;
198};
199
200struct branch_stack {
201    u64 nr;
202    struct branch_entry entries[0];
203};
204
205extern bool perf_host, perf_guest;
206extern const char perf_version_string[];
207
208void pthread__unblock_sigwinch(void);
209
210#include "util/target.h"
211
212struct perf_record_opts {
213    struct perf_target target;
214    bool call_graph;
215    bool group;
216    bool inherit_stat;
217    bool no_delay;
218    bool no_inherit;
219    bool no_samples;
220    bool pipe_output;
221    bool raw_samples;
222    bool sample_address;
223    bool sample_time;
224    bool sample_id_all_missing;
225    bool exclude_guest_missing;
226    bool period;
227    unsigned int freq;
228    unsigned int mmap_pages;
229    unsigned int user_freq;
230    u64 branch_stack;
231    u64 default_interval;
232    u64 user_interval;
233};
234
235#endif
236

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