1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _PERF_UTIL_TRACE_EVENT_H
3 #define _PERF_UTIL_TRACE_EVENT_H
4
5 #include <stdbool.h>
6 #include <stdio.h>
7 #include <sys/types.h>
8 #include <linux/types.h>
9
10 struct evlist;
11 struct machine;
12 struct perf_sample;
13 union perf_event;
14 struct perf_tool;
15 struct thread;
16 struct tep_plugin_list;
17 struct evsel;
18 struct tep_format_field;
19
20 struct trace_event {
21 struct tep_handle *pevent;
22 struct tep_plugin_list *plugin_list;
23 };
24
25 /* Computes a version number comparable with LIBTRACEEVENT_VERSION from Makefile.config. */
26 #define MAKE_LIBTRACEEVENT_VERSION(a, b, c) ((a)*255*255+(b)*255+(c))
27
28 typedef char *(tep_func_resolver_t)(void *priv,
29 unsigned long long *addrp, char **modp);
30
31 bool have_tracepoints(struct list_head *evlist);
32
33 int trace_event__init(struct trace_event *t);
34 void trace_event__cleanup(struct trace_event *t);
35 int trace_event__register_resolver(struct machine *machine,
36 tep_func_resolver_t *func);
37 struct tep_event*
38 trace_event__tp_format(const char *sys, const char *name);
39
40 struct tep_event *trace_event__tp_format_id(int id);
41
42 void event_format__fprintf(struct tep_event *event,
43 int cpu, void *data, int size, FILE *fp);
44
45 void event_format__print(struct tep_event *event,
46 int cpu, void *data, int size);
47
48 int parse_ftrace_file(struct tep_handle *pevent, char *buf, unsigned long size);
49 int parse_event_file(struct tep_handle *pevent,
50 char *buf, unsigned long size, char *sys);
51
52 unsigned long long
53 raw_field_value(struct tep_event *event, const char *name, void *data);
54
55 const char *parse_task_states(struct tep_format_field *state_field);
56
57 void parse_proc_kallsyms(struct tep_handle *pevent, char *file, unsigned int size);
58 void parse_ftrace_printk(struct tep_handle *pevent, char *file, unsigned int size);
59 void parse_saved_cmdline(struct tep_handle *pevent, char *file, unsigned int size);
60
61 ssize_t trace_report(int fd, struct trace_event *tevent, bool repipe);
62
63 unsigned long long read_size(struct tep_event *event, void *ptr, int size);
64 unsigned long long eval_flag(const char *flag);
65
66 int read_tracing_data(int fd, struct list_head *pattrs);
67
68 /*
69 * Return the tracepoint name in the format "subsystem:event_name",
70 * callers should free the returned string.
71 */
72 char *tracepoint_id_to_name(u64 config);
73
74 struct tracing_data {
75 /* size is only valid if temp is 'true' */
76 ssize_t size;
77 bool temp;
78 char temp_file[50];
79 };
80
81 struct tracing_data *tracing_data_get(struct list_head *pattrs,
82 int fd, bool temp);
83 int tracing_data_put(struct tracing_data *tdata);
84
85
86 struct addr_location;
87
88 struct perf_session;
89 struct perf_stat_config;
90
91 struct scripting_ops {
92 const char *name;
93 const char *dirname; /* For script path .../scripts/<dirname>/... */
94 int (*start_script)(const char *script, int argc, const char **argv,
95 struct perf_session *session);
96 int (*flush_script) (void);
97 int (*stop_script) (void);
98 void (*process_event) (union perf_event *event,
99 struct perf_sample *sample,
100 struct evsel *evsel,
101 struct addr_location *al,
102 struct addr_location *addr_al);
103 void (*process_switch)(union perf_event *event,
104 struct perf_sample *sample,
105 struct machine *machine);
106 void (*process_auxtrace_error)(struct perf_session *session,
107 union perf_event *event);
108 void (*process_stat)(struct perf_stat_config *config,
109 struct evsel *evsel, u64 tstamp);
110 void (*process_stat_interval)(u64 tstamp);
111 void (*process_throttle)(union perf_event *event,
112 struct perf_sample *sample,
113 struct machine *machine);
114 int (*generate_script) (struct tep_handle *pevent, const char *outfile);
115 };
116
117 extern unsigned int scripting_max_stack;
118
119 int script_spec_register(const char *spec, struct scripting_ops *ops);
120
121 void script_fetch_insn(struct perf_sample *sample, struct thread *thread,
122 struct machine *machine);
123
124 void setup_perl_scripting(void);
125 void setup_python_scripting(void);
126
127 struct scripting_context {
128 struct tep_handle *pevent;
129 void *event_data;
130 union perf_event *event;
131 struct perf_sample *sample;
132 struct evsel *evsel;
133 struct addr_location *al;
134 struct addr_location *addr_al;
135 struct perf_session *session;
136 };
137
138 void scripting_context__update(struct scripting_context *scripting_context,
139 union perf_event *event,
140 struct perf_sample *sample,
141 struct evsel *evsel,
142 struct addr_location *al,
143 struct addr_location *addr_al);
144
145 int common_pc(struct scripting_context *context);
146 int common_flags(struct scripting_context *context);
147 int common_lock_depth(struct scripting_context *context);
148
149 #define SAMPLE_FLAGS_BUF_SIZE 64
150 int perf_sample__sprintf_flags(u32 flags, char *str, size_t sz);
151
152 #if defined(LIBTRACEEVENT_VERSION) && LIBTRACEEVENT_VERSION >= MAKE_LIBTRACEEVENT_VERSION(1, 5, 0)
153 #include <traceevent/event-parse.h>
154
155 static inline bool tep_field_is_relative(unsigned long flags)
156 {
157 return (flags & TEP_FIELD_IS_RELATIVE) != 0;
158 }
159 #else
160 #include <linux/compiler.h>
161
162 static inline bool tep_field_is_relative(unsigned long flags __maybe_unused)
163 {
164 return false;
165 }
166 #endif
167
168 #endif /* _PERF_UTIL_TRACE_EVENT_H */
169
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