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 */ 41