xref: /openbmc/linux/tools/perf/perf.h (revision 05bcf503)
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/uapi/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 __aarch64__
92 #include "../../arch/arm64/include/asm/unistd.h"
93 #define rmb()		asm volatile("dmb ld" ::: "memory")
94 #define cpu_relax()	asm volatile("yield" ::: "memory")
95 #endif
96 
97 #ifdef __mips__
98 #include "../../arch/mips/include/asm/unistd.h"
99 #define rmb()		asm volatile(					\
100 				".set	mips2\n\t"			\
101 				"sync\n\t"				\
102 				".set	mips0"				\
103 				: /* no output */			\
104 				: /* no input */			\
105 				: "memory")
106 #define cpu_relax()	asm volatile("" ::: "memory")
107 #define CPUINFO_PROC	"cpu model"
108 #endif
109 
110 #include <time.h>
111 #include <unistd.h>
112 #include <sys/types.h>
113 #include <sys/syscall.h>
114 
115 #include "../../include/uapi/linux/perf_event.h"
116 #include "util/types.h"
117 #include <stdbool.h>
118 
119 struct perf_mmap {
120 	void			*base;
121 	int			mask;
122 	unsigned int		prev;
123 };
124 
125 static inline unsigned int perf_mmap__read_head(struct perf_mmap *mm)
126 {
127 	struct perf_event_mmap_page *pc = mm->base;
128 	int head = pc->data_head;
129 	rmb();
130 	return head;
131 }
132 
133 static inline void perf_mmap__write_tail(struct perf_mmap *md,
134 					 unsigned long tail)
135 {
136 	struct perf_event_mmap_page *pc = md->base;
137 
138 	/*
139 	 * ensure all reads are done before we write the tail out.
140 	 */
141 	/* mb(); */
142 	pc->data_tail = tail;
143 }
144 
145 /*
146  * prctl(PR_TASK_PERF_EVENTS_DISABLE) will (cheaply) disable all
147  * counters in the current task.
148  */
149 #define PR_TASK_PERF_EVENTS_DISABLE   31
150 #define PR_TASK_PERF_EVENTS_ENABLE    32
151 
152 #ifndef NSEC_PER_SEC
153 # define NSEC_PER_SEC			1000000000ULL
154 #endif
155 
156 static inline unsigned long long rdclock(void)
157 {
158 	struct timespec ts;
159 
160 	clock_gettime(CLOCK_MONOTONIC, &ts);
161 	return ts.tv_sec * 1000000000ULL + ts.tv_nsec;
162 }
163 
164 /*
165  * Pick up some kernel type conventions:
166  */
167 #define __user
168 #define asmlinkage
169 
170 #define unlikely(x)	__builtin_expect(!!(x), 0)
171 #define min(x, y) ({				\
172 	typeof(x) _min1 = (x);			\
173 	typeof(y) _min2 = (y);			\
174 	(void) (&_min1 == &_min2);		\
175 	_min1 < _min2 ? _min1 : _min2; })
176 
177 static inline int
178 sys_perf_event_open(struct perf_event_attr *attr,
179 		      pid_t pid, int cpu, int group_fd,
180 		      unsigned long flags)
181 {
182 	return syscall(__NR_perf_event_open, attr, pid, cpu,
183 		       group_fd, flags);
184 }
185 
186 #define MAX_COUNTERS			256
187 #define MAX_NR_CPUS			256
188 
189 struct ip_callchain {
190 	u64 nr;
191 	u64 ips[0];
192 };
193 
194 struct branch_flags {
195 	u64 mispred:1;
196 	u64 predicted:1;
197 	u64 reserved:62;
198 };
199 
200 struct branch_entry {
201 	u64				from;
202 	u64				to;
203 	struct branch_flags flags;
204 };
205 
206 struct branch_stack {
207 	u64				nr;
208 	struct branch_entry	entries[0];
209 };
210 
211 extern bool perf_host, perf_guest;
212 extern const char perf_version_string[];
213 
214 void pthread__unblock_sigwinch(void);
215 
216 #include "util/target.h"
217 
218 enum perf_call_graph_mode {
219 	CALLCHAIN_NONE,
220 	CALLCHAIN_FP,
221 	CALLCHAIN_DWARF
222 };
223 
224 struct perf_record_opts {
225 	struct perf_target target;
226 	int	     call_graph;
227 	bool	     group;
228 	bool	     inherit_stat;
229 	bool	     no_delay;
230 	bool	     no_inherit;
231 	bool	     no_samples;
232 	bool	     pipe_output;
233 	bool	     raw_samples;
234 	bool	     sample_address;
235 	bool	     sample_time;
236 	bool	     sample_id_all_missing;
237 	bool	     exclude_guest_missing;
238 	bool	     period;
239 	unsigned int freq;
240 	unsigned int mmap_pages;
241 	unsigned int user_freq;
242 	u64          branch_stack;
243 	u64	     default_interval;
244 	u64	     user_interval;
245 	u16	     stack_dump_size;
246 };
247 
248 #endif
249