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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 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_NOOVERWRITE,
 75         PARSE_EVENTS__TERM_TYPE_OVERWRITE,
 76         PARSE_EVENTS__TERM_TYPE_DRV_CFG,
 77         __PARSE_EVENTS__TERM_TYPE_NR,
 78 };
 79 
 80 struct parse_events_array {
 81         size_t nr_ranges;
 82         struct {
 83                 unsigned int start;
 84                 size_t length;
 85         } *ranges;
 86 };
 87 
 88 struct parse_events_term {
 89         char *config;
 90         struct parse_events_array array;
 91         union {
 92                 char *str;
 93                 u64  num;
 94         } val;
 95         int type_val;
 96         int type_term;
 97         struct list_head list;
 98         bool used;
 99         bool no_value;
100 
101         /* error string indexes for within parsed string */
102         int err_term;
103         int err_val;
104 
105         /* Coming from implicit alias */
106         bool weak;
107 };
108 
109 struct parse_events_error {
110         int   idx;      /* index in the parsed string */
111         char *str;      /* string to display at the index */
112         char *help;     /* optional help string */
113 };
114 
115 struct parse_events_state {
116         struct list_head           list;
117         int                        idx;
118         int                        nr_groups;
119         struct parse_events_error *error;
120         struct perf_evlist        *evlist;
121         struct list_head          *terms;
122 };
123 
124 void parse_events__shrink_config_terms(void);
125 int parse_events__is_hardcoded_term(struct parse_events_term *term);
126 int parse_events_term__num(struct parse_events_term **term,
127                            int type_term, char *config, u64 num,
128                            bool novalue,
129                            void *loc_term, void *loc_val);
130 int parse_events_term__str(struct parse_events_term **term,
131                            int type_term, char *config, char *str,
132                            void *loc_term, void *loc_val);
133 int parse_events_term__sym_hw(struct parse_events_term **term,
134                               char *config, unsigned idx);
135 int parse_events_term__clone(struct parse_events_term **new,
136                              struct parse_events_term *term);
137 void parse_events_terms__delete(struct list_head *terms);
138 void parse_events_terms__purge(struct list_head *terms);
139 void parse_events__clear_array(struct parse_events_array *a);
140 int parse_events__modifier_event(struct list_head *list, char *str, bool add);
141 int parse_events__modifier_group(struct list_head *list, char *event_mod);
142 int parse_events_name(struct list_head *list, char *name);
143 int parse_events_add_tracepoint(struct list_head *list, int *idx,
144                                 const char *sys, const char *event,
145                                 struct parse_events_error *error,
146                                 struct list_head *head_config);
147 int parse_events_load_bpf(struct parse_events_state *parse_state,
148                           struct list_head *list,
149                           char *bpf_file_name,
150                           bool source,
151                           struct list_head *head_config);
152 /* Provide this function for perf test */
153 struct bpf_object;
154 int parse_events_load_bpf_obj(struct parse_events_state *parse_state,
155                               struct list_head *list,
156                               struct bpf_object *obj,
157                               struct list_head *head_config);
158 int parse_events_add_numeric(struct parse_events_state *parse_state,
159                              struct list_head *list,
160                              u32 type, u64 config,
161                              struct list_head *head_config);
162 int parse_events_add_cache(struct list_head *list, int *idx,
163                            char *type, char *op_result1, char *op_result2,
164                            struct parse_events_error *error,
165                            struct list_head *head_config);
166 int parse_events_add_breakpoint(struct list_head *list, int *idx,
167                                 void *ptr, char *type, u64 len);
168 int parse_events_add_pmu(struct parse_events_state *parse_state,
169                          struct list_head *list, char *name,
170                          struct list_head *head_config,
171                          bool auto_merge_stats,
172                          bool use_alias);
173 
174 int parse_events_multi_pmu_add(struct parse_events_state *parse_state,
175                                char *str,
176                                struct list_head **listp);
177 
178 int parse_events_copy_term_list(struct list_head *old,
179                                  struct list_head **new);
180 
181 enum perf_pmu_event_symbol_type
182 perf_pmu__parse_check(const char *name);
183 void parse_events__set_leader(char *name, struct list_head *list,
184                               struct parse_events_state *parse_state);
185 void parse_events_update_lists(struct list_head *list_event,
186                                struct list_head *list_all);
187 void parse_events_evlist_error(struct parse_events_state *parse_state,
188                                int idx, const char *str);
189 
190 void print_events(const char *event_glob, bool name_only, bool quiet,
191                   bool long_desc, bool details_flag);
192 
193 struct event_symbol {
194         const char      *symbol;
195         const char      *alias;
196 };
197 extern struct event_symbol event_symbols_hw[];
198 extern struct event_symbol event_symbols_sw[];
199 void print_symbol_events(const char *event_glob, unsigned type,
200                                 struct event_symbol *syms, unsigned max,
201                                 bool name_only);
202 void print_tracepoint_events(const char *subsys_glob, const char *event_glob,
203                              bool name_only);
204 int print_hwcache_events(const char *event_glob, bool name_only);
205 void print_sdt_events(const char *subsys_glob, const char *event_glob,
206                       bool name_only);
207 int is_valid_tracepoint(const char *event_string);
208 
209 int valid_event_mount(const char *eventfs);
210 char *parse_events_formats_error_string(char *additional_terms);
211 
212 void parse_events_print_error(struct parse_events_error *err,
213                               const char *event);
214 
215 #ifdef HAVE_LIBELF_SUPPORT
216 /*
217  * If the probe point starts with '%',
218  * or starts with "sdt_" and has a ':' but no '=',
219  * then it should be a SDT/cached probe point.
220  */
221 static inline bool is_sdt_event(char *str)
222 {
223         return (str[0] == '%' ||
224                 (!strncmp(str, "sdt_", 4) &&
225                  !!strchr(str, ':') && !strchr(str, '=')));
226 }
227 #else
228 static inline bool is_sdt_event(char *str __maybe_unused)
229 {
230         return false;
231 }
232 #endif /* HAVE_LIBELF_SUPPORT */
233 
234 #endif /* __PERF_PARSE_EVENTS_H */
235 

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