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Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
1#ifndef _PROBE_EVENT_H
2#define _PROBE_EVENT_H
3
4#include <stdbool.h>
5#include "strlist.h"
6#include "strfilter.h"
7
8extern bool probe_event_dry_run;
9
10/* kprobe-tracer tracing point */
11struct probe_trace_point {
12 char *symbol; /* Base symbol */
13 char *module; /* Module name */
14 unsigned long offset; /* Offset from symbol */
15 bool retprobe; /* Return probe flag */
16};
17
18/* probe-tracer tracing argument referencing offset */
19struct probe_trace_arg_ref {
20 struct probe_trace_arg_ref *next; /* Next reference */
21 long offset; /* Offset value */
22};
23
24/* kprobe-tracer tracing argument */
25struct probe_trace_arg {
26 char *name; /* Argument name */
27 char *value; /* Base value */
28 char *type; /* Type name */
29 struct probe_trace_arg_ref *ref; /* Referencing offset */
30};
31
32/* kprobe-tracer tracing event (point + arg) */
33struct probe_trace_event {
34 char *event; /* Event name */
35 char *group; /* Group name */
36 struct probe_trace_point point; /* Trace point */
37 int nargs; /* Number of args */
38 struct probe_trace_arg *args; /* Arguments */
39};
40
41/* Perf probe probing point */
42struct perf_probe_point {
43 char *file; /* File path */
44 char *function; /* Function name */
45 int line; /* Line number */
46 bool retprobe; /* Return probe flag */
47 char *lazy_line; /* Lazy matching pattern */
48 unsigned long offset; /* Offset from function entry */
49};
50
51/* Perf probe probing argument field chain */
52struct perf_probe_arg_field {
53 struct perf_probe_arg_field *next; /* Next field */
54 char *name; /* Name of the field */
55 long index; /* Array index number */
56 bool ref; /* Referencing flag */
57};
58
59/* Perf probe probing argument */
60struct perf_probe_arg {
61 char *name; /* Argument name */
62 char *var; /* Variable name */
63 char *type; /* Type name */
64 struct perf_probe_arg_field *field; /* Structure fields */
65};
66
67/* Perf probe probing event (point + arg) */
68struct perf_probe_event {
69 char *event; /* Event name */
70 char *group; /* Group name */
71 struct perf_probe_point point; /* Probe point */
72 int nargs; /* Number of arguments */
73 struct perf_probe_arg *args; /* Arguments */
74};
75
76
77/* Line number container */
78struct line_node {
79 struct list_head list;
80 int line;
81};
82
83/* Line range */
84struct line_range {
85 char *file; /* File name */
86 char *function; /* Function name */
87 int start; /* Start line number */
88 int end; /* End line number */
89 int offset; /* Start line offset */
90 char *path; /* Real path name */
91 char *comp_dir; /* Compile directory */
92 struct list_head line_list; /* Visible lines */
93};
94
95/* List of variables */
96struct variable_list {
97 struct probe_trace_point point; /* Actual probepoint */
98 struct strlist *vars; /* Available variables */
99};
100
101/* Command string to events */
102extern int parse_perf_probe_command(const char *cmd,
103 struct perf_probe_event *pev);
104
105/* Events to command string */
106extern char *synthesize_perf_probe_command(struct perf_probe_event *pev);
107extern char *synthesize_probe_trace_command(struct probe_trace_event *tev);
108extern int synthesize_perf_probe_arg(struct perf_probe_arg *pa, char *buf,
109 size_t len);
110
111/* Check the perf_probe_event needs debuginfo */
112extern bool perf_probe_event_need_dwarf(struct perf_probe_event *pev);
113
114/* Release event contents */
115extern void clear_perf_probe_event(struct perf_probe_event *pev);
116
117/* Command string to line-range */
118extern int parse_line_range_desc(const char *cmd, struct line_range *lr);
119
120/* Internal use: Return kernel/module path */
121extern const char *kernel_get_module_path(const char *module);
122
123extern int add_perf_probe_events(struct perf_probe_event *pevs, int npevs,
124 int max_probe_points, const char *module,
125 bool force_add);
126extern int del_perf_probe_events(struct strlist *dellist);
127extern int show_perf_probe_events(void);
128extern int show_line_range(struct line_range *lr, const char *module);
129extern int show_available_vars(struct perf_probe_event *pevs, int npevs,
130 int max_probe_points, const char *module,
131 struct strfilter *filter, bool externs);
132extern int show_available_funcs(const char *module, struct strfilter *filter);
133
134
135/* Maximum index number of event-name postfix */
136#define MAX_EVENT_INDEX 1024
137
138#endif /*_PROBE_EVENT_H */