xref: /openbmc/linux/tools/perf/util/trace-event.h (revision 68198dca)
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _PERF_UTIL_TRACE_EVENT_H
3 #define _PERF_UTIL_TRACE_EVENT_H
4 
5 #include <traceevent/event-parse.h>
6 #include "parse-events.h"
7 
8 struct machine;
9 struct perf_sample;
10 union perf_event;
11 struct perf_tool;
12 struct thread;
13 struct plugin_list;
14 
15 struct trace_event {
16 	struct pevent		*pevent;
17 	struct plugin_list	*plugin_list;
18 };
19 
20 int trace_event__init(struct trace_event *t);
21 void trace_event__cleanup(struct trace_event *t);
22 int trace_event__register_resolver(struct machine *machine,
23 				   pevent_func_resolver_t *func);
24 struct event_format*
25 trace_event__tp_format(const char *sys, const char *name);
26 
27 struct event_format *trace_event__tp_format_id(int id);
28 
29 int bigendian(void);
30 
31 void event_format__fprintf(struct event_format *event,
32 			   int cpu, void *data, int size, FILE *fp);
33 
34 void event_format__print(struct event_format *event,
35 			 int cpu, void *data, int size);
36 
37 int parse_ftrace_file(struct pevent *pevent, char *buf, unsigned long size);
38 int parse_event_file(struct pevent *pevent,
39 		     char *buf, unsigned long size, char *sys);
40 
41 unsigned long long
42 raw_field_value(struct event_format *event, const char *name, void *data);
43 
44 void parse_proc_kallsyms(struct pevent *pevent, char *file, unsigned int size);
45 void parse_ftrace_printk(struct pevent *pevent, char *file, unsigned int size);
46 void parse_saved_cmdline(struct pevent *pevent, char *file, unsigned int size);
47 
48 ssize_t trace_report(int fd, struct trace_event *tevent, bool repipe);
49 
50 struct event_format *trace_find_next_event(struct pevent *pevent,
51 					   struct event_format *event);
52 unsigned long long read_size(struct event_format *event, void *ptr, int size);
53 unsigned long long eval_flag(const char *flag);
54 
55 int read_tracing_data(int fd, struct list_head *pattrs);
56 
57 struct tracing_data {
58 	/* size is only valid if temp is 'true' */
59 	ssize_t size;
60 	bool temp;
61 	char temp_file[50];
62 };
63 
64 struct tracing_data *tracing_data_get(struct list_head *pattrs,
65 				      int fd, bool temp);
66 int tracing_data_put(struct tracing_data *tdata);
67 
68 
69 struct addr_location;
70 
71 struct perf_session;
72 struct perf_stat_config;
73 
74 struct scripting_ops {
75 	const char *name;
76 	int (*start_script) (const char *script, int argc, const char **argv);
77 	int (*flush_script) (void);
78 	int (*stop_script) (void);
79 	void (*process_event) (union perf_event *event,
80 			       struct perf_sample *sample,
81 			       struct perf_evsel *evsel,
82 			       struct addr_location *al);
83 	void (*process_stat)(struct perf_stat_config *config,
84 			     struct perf_evsel *evsel, u64 tstamp);
85 	void (*process_stat_interval)(u64 tstamp);
86 	int (*generate_script) (struct pevent *pevent, const char *outfile);
87 };
88 
89 extern unsigned int scripting_max_stack;
90 
91 int script_spec_register(const char *spec, struct scripting_ops *ops);
92 
93 void setup_perl_scripting(void);
94 void setup_python_scripting(void);
95 
96 struct scripting_context {
97 	struct pevent *pevent;
98 	void *event_data;
99 };
100 
101 int common_pc(struct scripting_context *context);
102 int common_flags(struct scripting_context *context);
103 int common_lock_depth(struct scripting_context *context);
104 
105 #endif /* _PERF_UTIL_TRACE_EVENT_H */
106