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runtime/kp_events.h - ktap

Data types defined

Macros defined

Source code

  1. #ifndef __KTAP_EVENTS_H__
  2. ‌#define __KTAP_EVENTS_H__

  4. #include <linux/ftrace_event.h>
  5. #include <trace/syscall.h>
  6. #include <trace/events/syscalls.h>
  7. #include <linux/syscalls.h>
  8. #include <linux/kprobes.h>

  10. ‌enum KTAP_EVENT_FIELD_TYPE {
  11.     KTAP_EVENT_FIELD_TYPE_INVALID = 0, /* arg type not support yet */

  13.     KTAP_EVENT_FIELD_TYPE_INT,
  14.     KTAP_EVENT_FIELD_TYPE_LONG,
  15.     KTAP_EVENT_FIELD_TYPE_STRING,

  17.     KTAP_EVENT_FIELD_TYPE_REGESTER,
  18.     KTAP_EVENT_FIELD_TYPE_CONST,
  19.     KTAP_EVENT_FIELD_TYPE_NIL /* arg not exist */
  20. };

  22. ‌struct ktap_event_field {
  23.     enum KTAP_EVENT_FIELD_TYPE type;
  24.     int offset;
  25. };

  27. ‌enum KTAP_EVENT_TYPE {
  28.     KTAP_EVENT_TYPE_PERF,
  29.     KTAP_EVENT_TYPE_TRACEPOINT,
  30.     KTAP_EVENT_TYPE_SYSCALL_ENTER,
  31.     KTAP_EVENT_TYPE_SYSCALL_EXIT,
  32.     KTAP_EVENT_TYPE_KPROBE,
  33. };

  35. ‌struct ktap_event {
  36.     struct list_head list;
  37.     int type;
  38.     ktap_state_t *ks;
  39.     ktap_func_t *fn;
  40.     struct perf_event *perf;
  41.     int syscall_nr; /* for syscall event */
  42.     struct ktap_event_field fields[9]; /* arg1..arg9 */
  43.     ktap_str_t *name; /* intern probename string */

  45.     struct kprobe kp; /* kprobe event */
  46. };

  48. /* this structure allocate on stack */
  49. ‌struct ktap_event_data {
  50.     struct ktap_event *event;
  51.     struct perf_sample_data *data;
  52.     struct pt_regs *regs;
  53.     ktap_str_t *argstr; /* for cache argstr intern string */
  54. };

  56. int kp_events_init(ktap_state_t *ks);
  57. void kp_events_exit(ktap_state_t *ks);

  59. int kp_event_create(ktap_state_t *ks, struct perf_event_attr *attr,
  60.             struct task_struct *task, const char *filter,
  61.             ktap_func_t *fn);
  62. int kp_event_create_tracepoint(ktap_state_t *ks, const char *event_name,
  63.                    ktap_func_t *fn);

  65. int kp_event_create_kprobe(ktap_state_t *ks, const char *event_name,
  66.                ktap_func_t *fn);
  67. void kp_event_getarg(ktap_state_t *ks, ktap_val_t *ra, int idx);
  68. const char *kp_event_tostr(ktap_state_t *ks);
  69. const ktap_str_t *kp_event_stringify(ktap_state_t *ks);

  71. #endif /* __KTAP_EVENTS_H__ */

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