1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef __PERF_THREAD_H 3 #define __PERF_THREAD_H 4 5 #include <linux/refcount.h> 6 #include <linux/list.h> 7 #include <stdio.h> 8 #include <unistd.h> 9 #include <sys/types.h> 10 #include "srccode.h" 11 #include "symbol_conf.h" 12 #include <strlist.h> 13 #include <intlist.h> 14 #include "rwsem.h" 15 #include "callchain.h" 16 #include <internal/rc_check.h> 17 18 struct addr_location; 19 struct map; 20 struct perf_record_namespaces; 21 struct thread_stack; 22 struct unwind_libunwind_ops; 23 24 struct lbr_stitch { 25 struct list_head lists; 26 struct list_head free_lists; 27 struct perf_sample prev_sample; 28 struct callchain_cursor_node *prev_lbr_cursor; 29 unsigned int prev_lbr_cursor_size; 30 }; 31 32 DECLARE_RC_STRUCT(thread) { 33 /** @maps: mmaps associated with this thread. */ 34 struct maps *maps; 35 pid_t pid_; /* Not all tools update this */ 36 /** @tid: thread ID number unique to a machine. */ 37 pid_t tid; 38 /** @ppid: parent process of the process this thread belongs to. */ 39 pid_t ppid; 40 int cpu; 41 int guest_cpu; /* For QEMU thread */ 42 refcount_t refcnt; 43 /** 44 * @exited: Has the thread had an exit event. Such threads are usually 45 * removed from the machine's threads but some events/tools require 46 * access to dead threads. 47 */ 48 bool exited; 49 bool comm_set; 50 int comm_len; 51 struct list_head namespaces_list; 52 struct rw_semaphore namespaces_lock; 53 struct list_head comm_list; 54 struct rw_semaphore comm_lock; 55 u64 db_id; 56 57 void *priv; 58 struct thread_stack *ts; 59 struct nsinfo *nsinfo; 60 struct srccode_state srccode_state; 61 bool filter; 62 int filter_entry_depth; 63 /** 64 * @e_machine: The ELF EM_* associated with the thread. EM_NONE if not 65 * computed. 66 */ 67 uint16_t e_machine; 68 /* LBR call stack stitch */ 69 bool lbr_stitch_enable; 70 struct lbr_stitch *lbr_stitch; 71 }; 72 73 struct machine; 74 struct namespaces; 75 struct comm; 76 77 struct thread *thread__new(pid_t pid, pid_t tid); 78 int thread__init_maps(struct thread *thread, struct machine *machine); 79 void thread__delete(struct thread *thread); 80 81 void thread__set_priv_destructor(void (*destructor)(void *priv)); 82 83 struct thread *thread__get(struct thread *thread); 84 void thread__put(struct thread *thread); 85 86 static inline void __thread__zput(struct thread **thread) 87 { 88 thread__put(*thread); 89 *thread = NULL; 90 } 91 92 #define thread__zput(thread) __thread__zput(&thread) 93 94 struct namespaces *thread__namespaces(struct thread *thread); 95 int thread__set_namespaces(struct thread *thread, u64 timestamp, 96 struct perf_record_namespaces *event); 97 98 int __thread__set_comm(struct thread *thread, const char *comm, u64 timestamp, 99 bool exec); 100 static inline int thread__set_comm(struct thread *thread, const char *comm, 101 u64 timestamp) 102 { 103 return __thread__set_comm(thread, comm, timestamp, false); 104 } 105 106 int thread__set_comm_from_proc(struct thread *thread); 107 108 int thread__comm_len(struct thread *thread); 109 struct comm *thread__comm(struct thread *thread); 110 struct comm *thread__exec_comm(struct thread *thread); 111 const char *thread__comm_str(struct thread *thread); 112 int thread__insert_map(struct thread *thread, struct map *map); 113 int thread__fork(struct thread *thread, struct thread *parent, u64 timestamp, bool do_maps_clone); 114 size_t thread__fprintf(struct thread *thread, FILE *fp); 115 116 struct thread *thread__main_thread(struct machine *machine, struct thread *thread); 117 118 struct map *thread__find_map(struct thread *thread, u8 cpumode, u64 addr, 119 struct addr_location *al); 120 struct map *thread__find_map_fb(struct thread *thread, u8 cpumode, u64 addr, 121 struct addr_location *al); 122 123 struct symbol *thread__find_symbol(struct thread *thread, u8 cpumode, 124 u64 addr, struct addr_location *al); 125 struct symbol *thread__find_symbol_fb(struct thread *thread, u8 cpumode, 126 u64 addr, struct addr_location *al); 127 128 void thread__find_cpumode_addr_location(struct thread *thread, u64 addr, 129 struct addr_location *al); 130 131 int thread__memcpy(struct thread *thread, struct machine *machine, 132 void *buf, u64 ip, int len, bool *is64bit); 133 134 static inline struct maps *thread__maps(struct thread *thread) 135 { 136 return RC_CHK_ACCESS(thread)->maps; 137 } 138 139 static inline void thread__set_maps(struct thread *thread, struct maps *maps) 140 { 141 RC_CHK_ACCESS(thread)->maps = maps; 142 } 143 144 static inline pid_t thread__pid(const struct thread *thread) 145 { 146 return RC_CHK_ACCESS(thread)->pid_; 147 } 148 149 static inline void thread__set_pid(struct thread *thread, pid_t pid_) 150 { 151 RC_CHK_ACCESS(thread)->pid_ = pid_; 152 } 153 154 static inline pid_t thread__tid(const struct thread *thread) 155 { 156 return RC_CHK_ACCESS(thread)->tid; 157 } 158 159 static inline void thread__set_tid(struct thread *thread, pid_t tid) 160 { 161 RC_CHK_ACCESS(thread)->tid = tid; 162 } 163 164 static inline pid_t thread__ppid(const struct thread *thread) 165 { 166 return RC_CHK_ACCESS(thread)->ppid; 167 } 168 169 static inline void thread__set_ppid(struct thread *thread, pid_t ppid) 170 { 171 RC_CHK_ACCESS(thread)->ppid = ppid; 172 } 173 174 static inline int thread__cpu(const struct thread *thread) 175 { 176 return RC_CHK_ACCESS(thread)->cpu; 177 } 178 179 static inline void thread__set_cpu(struct thread *thread, int cpu) 180 { 181 RC_CHK_ACCESS(thread)->cpu = cpu; 182 } 183 184 static inline int thread__guest_cpu(const struct thread *thread) 185 { 186 return RC_CHK_ACCESS(thread)->guest_cpu; 187 } 188 189 static inline void thread__set_guest_cpu(struct thread *thread, int guest_cpu) 190 { 191 RC_CHK_ACCESS(thread)->guest_cpu = guest_cpu; 192 } 193 194 static inline refcount_t *thread__refcnt(struct thread *thread) 195 { 196 return &RC_CHK_ACCESS(thread)->refcnt; 197 } 198 199 static inline void thread__set_exited(struct thread *thread, bool exited) 200 { 201 RC_CHK_ACCESS(thread)->exited = exited; 202 } 203 204 static inline bool thread__comm_set(const struct thread *thread) 205 { 206 return RC_CHK_ACCESS(thread)->comm_set; 207 } 208 209 static inline void thread__set_comm_set(struct thread *thread, bool set) 210 { 211 RC_CHK_ACCESS(thread)->comm_set = set; 212 } 213 214 static inline int thread__var_comm_len(const struct thread *thread) 215 { 216 return RC_CHK_ACCESS(thread)->comm_len; 217 } 218 219 static inline void thread__set_comm_len(struct thread *thread, int len) 220 { 221 RC_CHK_ACCESS(thread)->comm_len = len; 222 } 223 224 static inline struct list_head *thread__namespaces_list(struct thread *thread) 225 { 226 return &RC_CHK_ACCESS(thread)->namespaces_list; 227 } 228 229 static inline int thread__namespaces_list_empty(const struct thread *thread) 230 { 231 return list_empty(&RC_CHK_ACCESS(thread)->namespaces_list); 232 } 233 234 static inline struct rw_semaphore *thread__namespaces_lock(struct thread *thread) 235 { 236 return &RC_CHK_ACCESS(thread)->namespaces_lock; 237 } 238 239 static inline struct list_head *thread__comm_list(struct thread *thread) 240 { 241 return &RC_CHK_ACCESS(thread)->comm_list; 242 } 243 244 static inline struct rw_semaphore *thread__comm_lock(struct thread *thread) 245 { 246 return &RC_CHK_ACCESS(thread)->comm_lock; 247 } 248 249 static inline u64 thread__db_id(const struct thread *thread) 250 { 251 return RC_CHK_ACCESS(thread)->db_id; 252 } 253 254 static inline void thread__set_db_id(struct thread *thread, u64 db_id) 255 { 256 RC_CHK_ACCESS(thread)->db_id = db_id; 257 } 258 259 static inline void *thread__priv(struct thread *thread) 260 { 261 return RC_CHK_ACCESS(thread)->priv; 262 } 263 264 static inline void thread__set_priv(struct thread *thread, void *p) 265 { 266 RC_CHK_ACCESS(thread)->priv = p; 267 } 268 269 static inline struct thread_stack *thread__ts(struct thread *thread) 270 { 271 return RC_CHK_ACCESS(thread)->ts; 272 } 273 274 static inline void thread__set_ts(struct thread *thread, struct thread_stack *ts) 275 { 276 RC_CHK_ACCESS(thread)->ts = ts; 277 } 278 279 static inline struct nsinfo *thread__nsinfo(struct thread *thread) 280 { 281 return RC_CHK_ACCESS(thread)->nsinfo; 282 } 283 284 static inline struct srccode_state *thread__srccode_state(struct thread *thread) 285 { 286 return &RC_CHK_ACCESS(thread)->srccode_state; 287 } 288 289 static inline bool thread__filter(const struct thread *thread) 290 { 291 return RC_CHK_ACCESS(thread)->filter; 292 } 293 294 static inline void thread__set_filter(struct thread *thread, bool filter) 295 { 296 RC_CHK_ACCESS(thread)->filter = filter; 297 } 298 299 static inline int thread__filter_entry_depth(const struct thread *thread) 300 { 301 return RC_CHK_ACCESS(thread)->filter_entry_depth; 302 } 303 304 static inline void thread__set_filter_entry_depth(struct thread *thread, int depth) 305 { 306 RC_CHK_ACCESS(thread)->filter_entry_depth = depth; 307 } 308 309 uint16_t thread__e_machine(struct thread *thread, struct machine *machine); 310 311 static inline void thread__set_e_machine(struct thread *thread, uint16_t e_machine) 312 { 313 RC_CHK_ACCESS(thread)->e_machine = e_machine; 314 } 315 316 317 static inline bool thread__lbr_stitch_enable(const struct thread *thread) 318 { 319 return RC_CHK_ACCESS(thread)->lbr_stitch_enable; 320 } 321 322 static inline void thread__set_lbr_stitch_enable(struct thread *thread, bool en) 323 { 324 RC_CHK_ACCESS(thread)->lbr_stitch_enable = en; 325 } 326 327 static inline struct lbr_stitch *thread__lbr_stitch(struct thread *thread) 328 { 329 return RC_CHK_ACCESS(thread)->lbr_stitch; 330 } 331 332 static inline void thread__set_lbr_stitch(struct thread *thread, struct lbr_stitch *lbrs) 333 { 334 RC_CHK_ACCESS(thread)->lbr_stitch = lbrs; 335 } 336 337 static inline bool thread__is_filtered(struct thread *thread) 338 { 339 if (symbol_conf.comm_list && 340 !strlist__has_entry(symbol_conf.comm_list, thread__comm_str(thread))) { 341 return true; 342 } 343 344 if (symbol_conf.pid_list && 345 !intlist__has_entry(symbol_conf.pid_list, thread__pid(thread))) { 346 return true; 347 } 348 349 if (symbol_conf.tid_list && 350 !intlist__has_entry(symbol_conf.tid_list, thread__tid(thread))) { 351 return true; 352 } 353 354 return false; 355 } 356 357 void thread__free_stitch_list(struct thread *thread); 358 359 void thread__resolve(struct thread *thread, struct addr_location *al, 360 struct perf_sample *sample); 361 362 #endif /* __PERF_THREAD_H */ 363