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        32
   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         bool is_signed;
  18         bool is_string;
  19         bool is_dynamic;
  20         bool field_pos;
  21 };
  22
  23 struct synth_event {
  24         struct dyn_event                        devent;
  25         int                                     ref;
  26         char                                    *name;
  27         struct synth_field                      **fields;
  28         unsigned int                            n_fields;
  29         struct synth_field                      **dynamic_fields;
  30         unsigned int                            n_dynamic_fields;
  31         unsigned int                            n_u64;
  32         struct trace_event_class                class;
  33         struct trace_event_call                 call;
  34         struct tracepoint                       *tp;
  35         struct module                           *mod;
  36 };
  37
  38 extern struct synth_event *find_synth_event(const char *name);
  39
  40 #endif /* __TRACE_SYNTH_H */