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, struct parse_events_error *error,
37 		   struct perf_pmu *fake_pmu);
38 
parse_events(struct evlist * evlist,const char * str,struct parse_events_error * err)39 static inline int parse_events(struct evlist *evlist, const char *str,
40 			       struct parse_events_error *err)
41 {
42 	return __parse_events(evlist, str, err, NULL);
43 }
44 
45 int parse_events_terms(struct list_head *terms, const char *str);
46 int parse_filter(const struct option *opt, const char *str, int unset);
47 int exclude_perf(const struct option *opt, const char *arg, int unset);
48 
49 #define EVENTS_HELP_MAX (128*1024)
50 
51 enum perf_pmu_event_symbol_type {
52 	PMU_EVENT_SYMBOL_ERR,		/* not a PMU EVENT */
53 	PMU_EVENT_SYMBOL,		/* normal style PMU event */
54 	PMU_EVENT_SYMBOL_PREFIX,	/* prefix of pre-suf style event */
55 	PMU_EVENT_SYMBOL_SUFFIX,	/* suffix of pre-suf style event */
56 	PMU_EVENT_SYMBOL_SUFFIX2,	/* suffix of pre-suf2 style event */
57 };
58 
59 struct perf_pmu_event_symbol {
60 	char	*symbol;
61 	enum perf_pmu_event_symbol_type	type;
62 };
63 
64 enum {
65 	PARSE_EVENTS__TERM_TYPE_NUM,
66 	PARSE_EVENTS__TERM_TYPE_STR,
67 };
68 
69 enum {
70 	PARSE_EVENTS__TERM_TYPE_USER,
71 	PARSE_EVENTS__TERM_TYPE_CONFIG,
72 	PARSE_EVENTS__TERM_TYPE_CONFIG1,
73 	PARSE_EVENTS__TERM_TYPE_CONFIG2,
74 	PARSE_EVENTS__TERM_TYPE_NAME,
75 	PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD,
76 	PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ,
77 	PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE,
78 	PARSE_EVENTS__TERM_TYPE_TIME,
79 	PARSE_EVENTS__TERM_TYPE_CALLGRAPH,
80 	PARSE_EVENTS__TERM_TYPE_STACKSIZE,
81 	PARSE_EVENTS__TERM_TYPE_NOINHERIT,
82 	PARSE_EVENTS__TERM_TYPE_INHERIT,
83 	PARSE_EVENTS__TERM_TYPE_MAX_STACK,
84 	PARSE_EVENTS__TERM_TYPE_MAX_EVENTS,
85 	PARSE_EVENTS__TERM_TYPE_NOOVERWRITE,
86 	PARSE_EVENTS__TERM_TYPE_OVERWRITE,
87 	PARSE_EVENTS__TERM_TYPE_DRV_CFG,
88 	PARSE_EVENTS__TERM_TYPE_PERCORE,
89 	PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT,
90 	PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE,
91 	PARSE_EVENTS__TERM_TYPE_METRIC_ID,
92 	__PARSE_EVENTS__TERM_TYPE_NR,
93 };
94 
95 struct parse_events_array {
96 	size_t nr_ranges;
97 	struct {
98 		unsigned int start;
99 		size_t length;
100 	} *ranges;
101 };
102 
103 struct parse_events_term {
104 	char *config;
105 	struct parse_events_array array;
106 	union {
107 		char *str;
108 		u64  num;
109 	} val;
110 	int type_val;
111 	int type_term;
112 	struct list_head list;
113 	bool used;
114 	bool no_value;
115 
116 	/* error string indexes for within parsed string */
117 	int err_term;
118 	int err_val;
119 
120 	/* Coming from implicit alias */
121 	bool weak;
122 };
123 
124 struct parse_events_error {
125 	int   num_errors;       /* number of errors encountered */
126 	int   idx;	/* index in the parsed string */
127 	char *str;      /* string to display at the index */
128 	char *help;	/* optional help string */
129 	int   first_idx;/* as above, but for the first encountered error */
130 	char *first_str;
131 	char *first_help;
132 };
133 
134 struct parse_events_state {
135 	struct list_head	   list;
136 	int			   idx;
137 	int			   nr_groups;
138 	struct parse_events_error *error;
139 	struct evlist		  *evlist;
140 	struct list_head	  *terms;
141 	int			   stoken;
142 	struct perf_pmu		  *fake_pmu;
143 	char			  *hybrid_pmu_name;
144 };
145 
146 void parse_events__shrink_config_terms(void);
147 int parse_events__is_hardcoded_term(struct parse_events_term *term);
148 int parse_events_term__num(struct parse_events_term **term,
149 			   int type_term, char *config, u64 num,
150 			   bool novalue,
151 			   void *loc_term, void *loc_val);
152 int parse_events_term__str(struct parse_events_term **term,
153 			   int type_term, char *config, char *str,
154 			   void *loc_term, void *loc_val);
155 int parse_events_term__sym_hw(struct parse_events_term **term,
156 			      char *config, unsigned idx);
157 int parse_events_term__clone(struct parse_events_term **new,
158 			     struct parse_events_term *term);
159 void parse_events_term__delete(struct parse_events_term *term);
160 void parse_events_terms__delete(struct list_head *terms);
161 void parse_events_terms__purge(struct list_head *terms);
162 void parse_events__clear_array(struct parse_events_array *a);
163 int parse_events__modifier_event(struct list_head *list, char *str, bool add);
164 int parse_events__modifier_group(struct list_head *list, char *event_mod);
165 int parse_events_name(struct list_head *list, const char *name);
166 int parse_events_add_tracepoint(struct list_head *list, int *idx,
167 				const char *sys, const char *event,
168 				struct parse_events_error *error,
169 				struct list_head *head_config);
170 int parse_events_load_bpf(struct parse_events_state *parse_state,
171 			  struct list_head *list,
172 			  char *bpf_file_name,
173 			  bool source,
174 			  struct list_head *head_config);
175 /* Provide this function for perf test */
176 struct bpf_object;
177 int parse_events_load_bpf_obj(struct parse_events_state *parse_state,
178 			      struct list_head *list,
179 			      struct bpf_object *obj,
180 			      struct list_head *head_config);
181 int parse_events_add_numeric(struct parse_events_state *parse_state,
182 			     struct list_head *list,
183 			     u32 type, u64 config,
184 			     struct list_head *head_config);
185 int parse_events_add_tool(struct parse_events_state *parse_state,
186 			  struct list_head *list,
187 			  int tool_event);
188 int parse_events_add_cache(struct list_head *list, int *idx,
189 			   char *type, char *op_result1, char *op_result2,
190 			   struct parse_events_error *error,
191 			   struct list_head *head_config,
192 			   struct parse_events_state *parse_state);
193 int parse_events_add_breakpoint(struct list_head *list, int *idx,
194 				u64 addr, char *type, u64 len);
195 int parse_events_add_pmu(struct parse_events_state *parse_state,
196 			 struct list_head *list, char *name,
197 			 struct list_head *head_config,
198 			 bool auto_merge_stats,
199 			 bool use_alias);
200 
201 struct evsel *parse_events__add_event(int idx, struct perf_event_attr *attr,
202 				      const char *name, const char *metric_id,
203 				      struct perf_pmu *pmu);
204 
205 int parse_events_multi_pmu_add(struct parse_events_state *parse_state,
206 			       char *str,
207 			       struct list_head *head_config,
208 			       struct list_head **listp);
209 
210 int parse_events_copy_term_list(struct list_head *old,
211 				 struct list_head **new);
212 
213 enum perf_pmu_event_symbol_type
214 perf_pmu__parse_check(const char *name);
215 void parse_events__set_leader(char *name, struct list_head *list,
216 			      struct parse_events_state *parse_state);
217 void parse_events_update_lists(struct list_head *list_event,
218 			       struct list_head *list_all);
219 void parse_events_evlist_error(struct parse_events_state *parse_state,
220 			       int idx, const char *str);
221 
222 void print_events(const char *event_glob, bool name_only, bool quiet,
223 		  bool long_desc, bool details_flag, bool deprecated,
224 		  const char *pmu_name);
225 
226 struct event_symbol {
227 	const char	*symbol;
228 	const char	*alias;
229 };
230 extern struct event_symbol event_symbols_hw[];
231 extern struct event_symbol event_symbols_sw[];
232 void print_symbol_events(const char *event_glob, unsigned type,
233 				struct event_symbol *syms, unsigned max,
234 				bool name_only);
235 void print_tool_events(const char *event_glob, bool name_only);
236 void print_tracepoint_events(const char *subsys_glob, const char *event_glob,
237 			     bool name_only);
238 int print_hwcache_events(const char *event_glob, bool name_only);
239 void print_sdt_events(const char *subsys_glob, const char *event_glob,
240 		      bool name_only);
241 int is_valid_tracepoint(const char *event_string);
242 
243 int valid_event_mount(const char *eventfs);
244 char *parse_events_formats_error_string(char *additional_terms);
245 
246 void parse_events_error__init(struct parse_events_error *err);
247 void parse_events_error__exit(struct parse_events_error *err);
248 void parse_events_error__handle(struct parse_events_error *err, int idx,
249 				char *str, char *help);
250 void parse_events_error__print(struct parse_events_error *err,
251 			       const char *event);
252 
253 #ifdef HAVE_LIBELF_SUPPORT
254 /*
255  * If the probe point starts with '%',
256  * or starts with "sdt_" and has a ':' but no '=',
257  * then it should be a SDT/cached probe point.
258  */
is_sdt_event(char * str)259 static inline bool is_sdt_event(char *str)
260 {
261 	return (str[0] == '%' ||
262 		(!strncmp(str, "sdt_", 4) &&
263 		 !!strchr(str, ':') && !strchr(str, '=')));
264 }
265 #else
is_sdt_event(char * str __maybe_unused)266 static inline bool is_sdt_event(char *str __maybe_unused)
267 {
268 	return false;
269 }
270 #endif /* HAVE_LIBELF_SUPPORT */
271 
272 int perf_pmu__test_parse_init(void);
273 
274 struct evsel *parse_events__add_event_hybrid(struct list_head *list, int *idx,
275 					     struct perf_event_attr *attr,
276 					     const char *name,
277 					     const char *metric_id,
278 					     struct perf_pmu *pmu,
279 					     struct list_head *config_terms);
280 
281 #endif /* __PERF_PARSE_EVENTS_H */
282