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Linux/tools/perf/util/parse-events.h

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  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 evsel;
 16 struct evlist;
 17 struct parse_events_error;
 18 
 19 struct option;
 20 struct perf_pmu;
 21 
 22 struct tracepoint_path {
 23         char *system;
 24         char *name;
 25         struct tracepoint_path *next;
 26 };
 27 
 28 struct tracepoint_path *tracepoint_id_to_path(u64 config);
 29 struct tracepoint_path *tracepoint_name_to_path(const char *name);
 30 bool have_tracepoints(struct list_head *evlist);
 31 
 32 const char *event_type(int type);
 33 
 34 int parse_events_option(const struct option *opt, const char *str, int unset);
 35 int parse_events_option_new_evlist(const struct option *opt, const char *str, int unset);
 36 int parse_events(struct evlist *evlist, const char *str,
 37                  struct parse_events_error *error);
 38 int parse_events_terms(struct list_head *terms, const char *str);
 39 int parse_filter(const struct option *opt, const char *str, int unset);
 40 int exclude_perf(const struct option *opt, const char *arg, int unset);
 41 
 42 #define EVENTS_HELP_MAX (128*1024)
 43 
 44 enum perf_pmu_event_symbol_type {
 45         PMU_EVENT_SYMBOL_ERR,           /* not a PMU EVENT */
 46         PMU_EVENT_SYMBOL,               /* normal style PMU event */
 47         PMU_EVENT_SYMBOL_PREFIX,        /* prefix of pre-suf style event */
 48         PMU_EVENT_SYMBOL_SUFFIX,        /* suffix of pre-suf style event */
 49 };
 50 
 51 struct perf_pmu_event_symbol {
 52         char    *symbol;
 53         enum perf_pmu_event_symbol_type type;
 54 };
 55 
 56 enum {
 57         PARSE_EVENTS__TERM_TYPE_NUM,
 58         PARSE_EVENTS__TERM_TYPE_STR,
 59 };
 60 
 61 enum {
 62         PARSE_EVENTS__TERM_TYPE_USER,
 63         PARSE_EVENTS__TERM_TYPE_CONFIG,
 64         PARSE_EVENTS__TERM_TYPE_CONFIG1,
 65         PARSE_EVENTS__TERM_TYPE_CONFIG2,
 66         PARSE_EVENTS__TERM_TYPE_NAME,
 67         PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD,
 68         PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ,
 69         PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE,
 70         PARSE_EVENTS__TERM_TYPE_TIME,
 71         PARSE_EVENTS__TERM_TYPE_CALLGRAPH,
 72         PARSE_EVENTS__TERM_TYPE_STACKSIZE,
 73         PARSE_EVENTS__TERM_TYPE_NOINHERIT,
 74         PARSE_EVENTS__TERM_TYPE_INHERIT,
 75         PARSE_EVENTS__TERM_TYPE_MAX_STACK,
 76         PARSE_EVENTS__TERM_TYPE_MAX_EVENTS,
 77         PARSE_EVENTS__TERM_TYPE_NOOVERWRITE,
 78         PARSE_EVENTS__TERM_TYPE_OVERWRITE,
 79         PARSE_EVENTS__TERM_TYPE_DRV_CFG,
 80         PARSE_EVENTS__TERM_TYPE_PERCORE,
 81         PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT,
 82         PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE,
 83         __PARSE_EVENTS__TERM_TYPE_NR,
 84 };
 85 
 86 struct parse_events_array {
 87         size_t nr_ranges;
 88         struct {
 89                 unsigned int start;
 90                 size_t length;
 91         } *ranges;
 92 };
 93 
 94 struct parse_events_term {
 95         char *config;
 96         struct parse_events_array array;
 97         union {
 98                 char *str;
 99                 u64  num;
100         } val;
101         int type_val;
102         int type_term;
103         struct list_head list;
104         bool used;
105         bool no_value;
106 
107         /* error string indexes for within parsed string */
108         int err_term;
109         int err_val;
110 
111         /* Coming from implicit alias */
112         bool weak;
113 };
114 
115 struct parse_events_error {
116         int   num_errors;       /* number of errors encountered */
117         int   idx;      /* index in the parsed string */
118         char *str;      /* string to display at the index */
119         char *help;     /* optional help string */
120         int   first_idx;/* as above, but for the first encountered error */
121         char *first_str;
122         char *first_help;
123 };
124 
125 struct parse_events_state {
126         struct list_head           list;
127         int                        idx;
128         int                        nr_groups;
129         struct parse_events_error *error;
130         struct evlist     *evlist;
131         struct list_head          *terms;
132         int                        stoken;
133 };
134 
135 void parse_events__handle_error(struct parse_events_error *err, int idx,
136                                 char *str, char *help);
137 void parse_events__shrink_config_terms(void);
138 int parse_events__is_hardcoded_term(struct parse_events_term *term);
139 int parse_events_term__num(struct parse_events_term **term,
140                            int type_term, char *config, u64 num,
141                            bool novalue,
142                            void *loc_term, void *loc_val);
143 int parse_events_term__str(struct parse_events_term **term,
144                            int type_term, char *config, char *str,
145                            void *loc_term, void *loc_val);
146 int parse_events_term__sym_hw(struct parse_events_term **term,
147                               char *config, unsigned idx);
148 int parse_events_term__clone(struct parse_events_term **new,
149                              struct parse_events_term *term);
150 void parse_events_term__delete(struct parse_events_term *term);
151 void parse_events_terms__delete(struct list_head *terms);
152 void parse_events_terms__purge(struct list_head *terms);
153 void parse_events__clear_array(struct parse_events_array *a);
154 int parse_events__modifier_event(struct list_head *list, char *str, bool add);
155 int parse_events__modifier_group(struct list_head *list, char *event_mod);
156 int parse_events_name(struct list_head *list, char *name);
157 int parse_events_add_tracepoint(struct list_head *list, int *idx,
158                                 const char *sys, const char *event,
159                                 struct parse_events_error *error,
160                                 struct list_head *head_config);
161 int parse_events_load_bpf(struct parse_events_state *parse_state,
162                           struct list_head *list,
163                           char *bpf_file_name,
164                           bool source,
165                           struct list_head *head_config);
166 /* Provide this function for perf test */
167 struct bpf_object;
168 int parse_events_load_bpf_obj(struct parse_events_state *parse_state,
169                               struct list_head *list,
170                               struct bpf_object *obj,
171                               struct list_head *head_config);
172 int parse_events_add_numeric(struct parse_events_state *parse_state,
173                              struct list_head *list,
174                              u32 type, u64 config,
175                              struct list_head *head_config);
176 enum perf_tool_event;
177 int parse_events_add_tool(struct parse_events_state *parse_state,
178                           struct list_head *list,
179                           enum perf_tool_event tool_event);
180 int parse_events_add_cache(struct list_head *list, int *idx,
181                            char *type, char *op_result1, char *op_result2,
182                            struct parse_events_error *error,
183                            struct list_head *head_config);
184 int parse_events_add_breakpoint(struct list_head *list, int *idx,
185                                 void *ptr, char *type, u64 len);
186 int parse_events_add_pmu(struct parse_events_state *parse_state,
187                          struct list_head *list, char *name,
188                          struct list_head *head_config,
189                          bool auto_merge_stats,
190                          bool use_alias);
191 
192 struct evsel *parse_events__add_event(int idx, struct perf_event_attr *attr,
193                                         char *name, struct perf_pmu *pmu);
194 
195 int parse_events_multi_pmu_add(struct parse_events_state *parse_state,
196                                char *str,
197                                struct list_head **listp);
198 
199 int parse_events_copy_term_list(struct list_head *old,
200                                  struct list_head **new);
201 
202 enum perf_pmu_event_symbol_type
203 perf_pmu__parse_check(const char *name);
204 void parse_events__set_leader(char *name, struct list_head *list,
205                               struct parse_events_state *parse_state);
206 void parse_events_update_lists(struct list_head *list_event,
207                                struct list_head *list_all);
208 void parse_events_evlist_error(struct parse_events_state *parse_state,
209                                int idx, const char *str);
210 
211 void print_events(const char *event_glob, bool name_only, bool quiet,
212                   bool long_desc, bool details_flag, bool deprecated);
213 
214 struct event_symbol {
215         const char      *symbol;
216         const char      *alias;
217 };
218 extern struct event_symbol event_symbols_hw[];
219 extern struct event_symbol event_symbols_sw[];
220 void print_symbol_events(const char *event_glob, unsigned type,
221                                 struct event_symbol *syms, unsigned max,
222                                 bool name_only);
223 void print_tool_events(const char *event_glob, bool name_only);
224 void print_tracepoint_events(const char *subsys_glob, const char *event_glob,
225                              bool name_only);
226 int print_hwcache_events(const char *event_glob, bool name_only);
227 void print_sdt_events(const char *subsys_glob, const char *event_glob,
228                       bool name_only);
229 int is_valid_tracepoint(const char *event_string);
230 
231 int valid_event_mount(const char *eventfs);
232 char *parse_events_formats_error_string(char *additional_terms);
233 
234 void parse_events_print_error(struct parse_events_error *err,
235                               const char *event);
236 
237 #ifdef HAVE_LIBELF_SUPPORT
238 /*
239  * If the probe point starts with '%',
240  * or starts with "sdt_" and has a ':' but no '=',
241  * then it should be a SDT/cached probe point.
242  */
243 static inline bool is_sdt_event(char *str)
244 {
245         return (str[0] == '%' ||
246                 (!strncmp(str, "sdt_", 4) &&
247                  !!strchr(str, ':') && !strchr(str, '=')));
248 }
249 #else
250 static inline bool is_sdt_event(char *str __maybe_unused)
251 {
252         return false;
253 }
254 #endif /* HAVE_LIBELF_SUPPORT */
255 
256 int perf_pmu__test_parse_init(void);
257 
258 #endif /* __PERF_PARSE_EVENTS_H */
259 

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