kernel/trace/trace_synth.h

   1 // SPDX-License-Identifier: GPL-2.0
   2 #ifndef __TRACE_SYNTH_H
   3 #define __TRACE_SYNTH_H
   4
   5 #include "trace_dynevent.h"
   6
   7 #define SYNTH_SYSTEM            "synthetic"
   8 #define SYNTH_FIELDS_MAX        64
   9
  10 #define STR_VAR_LEN_MAX         MAX_FILTER_STR_VAL /* must be multiple of sizeof(u64) */
  11
  12 struct synth_field {
  13         char *type;
  14         char *name;
  15         size_t size;
  16         unsigned int offset;
  17         unsigned int field_pos;
  18         bool is_signed;
  19         bool is_string;
  20         bool is_dynamic;
  21         bool is_stack;
  22 };
  23
  24 struct synth_event {
  25         struct dyn_event                        devent;
  26         int                                     ref;
  27         char                                    *name;
  28         struct synth_field                      **fields;
  29         unsigned int                            n_fields;
  30         struct synth_field                      **dynamic_fields;
  31         unsigned int                            n_dynamic_fields;
  32         unsigned int                            n_u64;
  33         struct trace_event_class                class;
  34         struct trace_event_call                 call;
  35         struct tracepoint                       *tp;
  36         struct module                           *mod;
  37 };
  38
  39 extern struct synth_event *find_synth_event(const char *name);
  40
  41 #endif /* __TRACE_SYNTH_H */