tools/perf/util/probe-event.h

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