tools/perf/util/parse-events.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __PERF_PARSE_EVENTS_H
   3 #define __PERF_PARSE_EVENTS_H
   4 /*
   5  * Parse symbolic events/counts passed in as options:
   6  */
   7
   8 #include <linux/list.h>
   9 #include <stdbool.h>
  10 #include <linux/types.h>
  11 #include <linux/perf_event.h>
  12 #include <string.h>
  13
  14 struct list_head;
  15 struct perf_evsel;
  16 struct perf_evlist;
  17 struct parse_events_error;
  18
  19 struct option;
  20
  21 struct tracepoint_path {
  22         char *system;
  23         char *name;
  24         struct tracepoint_path *next;
  25 };
  26
  27 struct tracepoint_path *tracepoint_id_to_path(u64 config);
  28 struct tracepoint_path *tracepoint_name_to_path(const char *name);
  29 bool have_tracepoints(struct list_head *evlist);
  30
  31 const char *event_type(int type);
  32
  33 int parse_events_option(const struct option *opt, const char *str, int unset);
  34 int parse_events(struct perf_evlist *evlist, const char *str,
  35                  struct parse_events_error *error);
  36 int parse_events_terms(struct list_head *terms, const char *str);
  37 int parse_filter(const struct option *opt, const char *str, int unset);
  38 int exclude_perf(const struct option *opt, const char *arg, int unset);
  39
  40 #define EVENTS_HELP_MAX (128*1024)
  41
  42 enum perf_pmu_event_symbol_type {
  43         PMU_EVENT_SYMBOL_ERR,           /* not a PMU EVENT */
  44         PMU_EVENT_SYMBOL,               /* normal style PMU event */
  45         PMU_EVENT_SYMBOL_PREFIX,        /* prefix of pre-suf style event */
  46         PMU_EVENT_SYMBOL_SUFFIX,        /* suffix of pre-suf style event */
  47 };
  48
  49 struct perf_pmu_event_symbol {
  50         char    *symbol;
  51         enum perf_pmu_event_symbol_type type;
  52 };
  53
  54 enum {
  55         PARSE_EVENTS__TERM_TYPE_NUM,
  56         PARSE_EVENTS__TERM_TYPE_STR,
  57 };
  58
  59 enum {
  60         PARSE_EVENTS__TERM_TYPE_USER,
  61         PARSE_EVENTS__TERM_TYPE_CONFIG,
  62         PARSE_EVENTS__TERM_TYPE_CONFIG1,
  63         PARSE_EVENTS__TERM_TYPE_CONFIG2,
  64         PARSE_EVENTS__TERM_TYPE_NAME,
  65         PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD,
  66         PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ,
  67         PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE,
  68         PARSE_EVENTS__TERM_TYPE_TIME,
  69         PARSE_EVENTS__TERM_TYPE_CALLGRAPH,
  70         PARSE_EVENTS__TERM_TYPE_STACKSIZE,
  71         PARSE_EVENTS__TERM_TYPE_NOINHERIT,
  72         PARSE_EVENTS__TERM_TYPE_INHERIT,
  73         PARSE_EVENTS__TERM_TYPE_MAX_STACK,
  74         PARSE_EVENTS__TERM_TYPE_MAX_EVENTS,
  75         PARSE_EVENTS__TERM_TYPE_NOOVERWRITE,
  76         PARSE_EVENTS__TERM_TYPE_OVERWRITE,
  77         PARSE_EVENTS__TERM_TYPE_DRV_CFG,
  78         __PARSE_EVENTS__TERM_TYPE_NR,
  79 };
  80
  81 struct parse_events_array {
  82         size_t nr_ranges;
  83         struct {
  84                 unsigned int start;
  85                 size_t length;
  86         } *ranges;
  87 };
  88
  89 struct parse_events_term {
  90         char *config;
  91         struct parse_events_array array;
  92         union {
  93                 char *str;
  94                 u64  num;
  95         } val;
  96         int type_val;
  97         int type_term;
  98         struct list_head list;
  99         bool used;
 100         bool no_value;
 101
 102         /* error string indexes for within parsed string */
 103         int err_term;
 104         int err_val;
 105
 106         /* Coming from implicit alias */
 107         bool weak;
 108 };
 109
 110 struct parse_events_error {
 111         int   idx;      /* index in the parsed string */
 112         char *str;      /* string to display at the index */
 113         char *help;     /* optional help string */
 114 };
 115
 116 struct parse_events_state {
 117         struct list_head           list;
 118         int                        idx;
 119         int                        nr_groups;
 120         struct parse_events_error *error;
 121         struct perf_evlist        *evlist;
 122         struct list_head          *terms;
 123 };
 124
 125 void parse_events__shrink_config_terms(void);
 126 int parse_events__is_hardcoded_term(struct parse_events_term *term);
 127 int parse_events_term__num(struct parse_events_term **term,
 128                            int type_term, char *config, u64 num,
 129                            bool novalue,
 130                            void *loc_term, void *loc_val);
 131 int parse_events_term__str(struct parse_events_term **term,
 132                            int type_term, char *config, char *str,
 133                            void *loc_term, void *loc_val);
 134 int parse_events_term__sym_hw(struct parse_events_term **term,
 135                               char *config, unsigned idx);
 136 int parse_events_term__clone(struct parse_events_term **new,
 137                              struct parse_events_term *term);
 138 void parse_events_terms__delete(struct list_head *terms);
 139 void parse_events_terms__purge(struct list_head *terms);
 140 void parse_events__clear_array(struct parse_events_array *a);
 141 int parse_events__modifier_event(struct list_head *list, char *str, bool add);
 142 int parse_events__modifier_group(struct list_head *list, char *event_mod);
 143 int parse_events_name(struct list_head *list, char *name);
 144 int parse_events_add_tracepoint(struct list_head *list, int *idx,
 145                                 const char *sys, const char *event,
 146                                 struct parse_events_error *error,
 147                                 struct list_head *head_config);
 148 int parse_events_load_bpf(struct parse_events_state *parse_state,
 149                           struct list_head *list,
 150                           char *bpf_file_name,
 151                           bool source,
 152                           struct list_head *head_config);
 153 /* Provide this function for perf test */
 154 struct bpf_object;
 155 int parse_events_load_bpf_obj(struct parse_events_state *parse_state,
 156                               struct list_head *list,
 157                               struct bpf_object *obj,
 158                               struct list_head *head_config);
 159 int parse_events_add_numeric(struct parse_events_state *parse_state,
 160                              struct list_head *list,
 161                              u32 type, u64 config,
 162                              struct list_head *head_config);
 163 int parse_events_add_cache(struct list_head *list, int *idx,
 164                            char *type, char *op_result1, char *op_result2,
 165                            struct parse_events_error *error,
 166                            struct list_head *head_config);
 167 int parse_events_add_breakpoint(struct list_head *list, int *idx,
 168                                 void *ptr, char *type, u64 len);
 169 int parse_events_add_pmu(struct parse_events_state *parse_state,
 170                          struct list_head *list, char *name,
 171                          struct list_head *head_config,
 172                          bool auto_merge_stats,
 173                          bool use_alias);
 174
 175 int parse_events_multi_pmu_add(struct parse_events_state *parse_state,
 176                                char *str,
 177                                struct list_head **listp);
 178
 179 int parse_events_copy_term_list(struct list_head *old,
 180                                  struct list_head **new);
 181
 182 enum perf_pmu_event_symbol_type
 183 perf_pmu__parse_check(const char *name);
 184 void parse_events__set_leader(char *name, struct list_head *list,
 185                               struct parse_events_state *parse_state);
 186 void parse_events_update_lists(struct list_head *list_event,
 187                                struct list_head *list_all);
 188 void parse_events_evlist_error(struct parse_events_state *parse_state,
 189                                int idx, const char *str);
 190
 191 void print_events(const char *event_glob, bool name_only, bool quiet,
 192                   bool long_desc, bool details_flag);
 193
 194 struct event_symbol {
 195         const char      *symbol;
 196         const char      *alias;
 197 };
 198 extern struct event_symbol event_symbols_hw[];
 199 extern struct event_symbol event_symbols_sw[];
 200 void print_symbol_events(const char *event_glob, unsigned type,
 201                                 struct event_symbol *syms, unsigned max,
 202                                 bool name_only);
 203 void print_tracepoint_events(const char *subsys_glob, const char *event_glob,
 204                              bool name_only);
 205 int print_hwcache_events(const char *event_glob, bool name_only);
 206 void print_sdt_events(const char *subsys_glob, const char *event_glob,
 207                       bool name_only);
 208 int is_valid_tracepoint(const char *event_string);
 209
 210 int valid_event_mount(const char *eventfs);
 211 char *parse_events_formats_error_string(char *additional_terms);
 212
 213 void parse_events_print_error(struct parse_events_error *err,
 214                               const char *event);
 215
 216 #ifdef HAVE_LIBELF_SUPPORT
 217 /*
 218  * If the probe point starts with '%',
 219  * or starts with "sdt_" and has a ':' but no '=',
 220  * then it should be a SDT/cached probe point.
 221  */
 222 static inline bool is_sdt_event(char *str)
 223 {
 224         return (str[0] == '%' ||
 225                 (!strncmp(str, "sdt_", 4) &&
 226                  !!strchr(str, ':') && !strchr(str, '=')));
 227 }
 228 #else
 229 static inline bool is_sdt_event(char *str __maybe_unused)
 230 {
 231         return false;
 232 }
 233 #endif /* HAVE_LIBELF_SUPPORT */
 234
 235 #endif /* __PERF_PARSE_EVENTS_H */