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         32 /* 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 };
  20
  21 struct synth_event {
  22         struct dyn_event                        devent;
  23         int                                     ref;
  24         char                                    *name;
  25         struct synth_field                      **fields;
  26         unsigned int                            n_fields;
  27         unsigned int                            n_u64;
  28         struct trace_event_class                class;
  29         struct trace_event_call                 call;
  30         struct tracepoint                       *tp;
  31         struct module                           *mod;
  32 };
  33
  34 extern struct synth_event *find_synth_event(const char *name);
  35
  36 #endif /* __TRACE_SYNTH_H */