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_flags: The ELF EF_* associated with the thread. Valid if e_machine != EM_NONE. 65 */ 66 uint16_t e_flags; 67 /** 68 * @e_machine: The ELF EM_* associated with the thread. EM_NONE if not 69 * computed. 70 */ 71 uint16_t e_machine; 72 /* LBR call stack stitch */ 73 bool lbr_stitch_enable; 74 struct lbr_stitch *lbr_stitch; 75 }; 76 77 struct machine; 78 struct namespaces; 79 struct comm; 80 81 struct thread *thread__new(pid_t pid, pid_t tid); 82 int thread__init_maps(struct thread *thread, struct machine *machine); 83 void thread__delete(struct thread *thread); 84 85 void thread__set_priv_destructor(void (*destructor)(void *priv)); 86 87 struct thread *thread__get(struct thread *thread); 88 void thread__put(struct thread *thread); 89 90 static inline void __thread__zput(struct thread **thread) 91 { 92 thread__put(*thread); 93 *thread = NULL; 94 } 95 96 #define thread__zput(thread) __thread__zput(&thread) 97 98 struct namespaces *thread__namespaces(struct thread *thread); 99 int thread__set_namespaces(struct thread *thread, u64 timestamp, 100 struct perf_record_namespaces *event); 101 102 int __thread__set_comm(struct thread *thread, const char *comm, u64 timestamp, 103 bool exec); 104 static inline int thread__set_comm(struct thread *thread, const char *comm, 105 u64 timestamp) 106 { 107 return __thread__set_comm(thread, comm, timestamp, false); 108 } 109 110 int thread__set_comm_from_proc(struct thread *thread); 111 112 int thread__comm_len(struct thread *thread); 113 struct comm *thread__comm(struct thread *thread); 114 struct comm *thread__exec_comm(struct thread *thread); 115 const char *thread__comm_str(struct thread *thread); 116 int thread__insert_map(struct thread *thread, struct map *map); 117 int thread__fork(struct thread *thread, struct thread *parent, u64 timestamp, bool do_maps_clone); 118 size_t thread__fprintf(struct thread *thread, FILE *fp); 119 120 struct thread *thread__main_thread(struct machine *machine, struct thread *thread); 121 122 struct map *thread__find_map(struct thread *thread, u8 cpumode, u64 addr, 123 struct addr_location *al); 124 struct map *thread__find_map_fb(struct thread *thread, u8 cpumode, u64 addr, 125 struct addr_location *al); 126 127 struct symbol *thread__find_symbol(struct thread *thread, u8 cpumode, 128 u64 addr, struct addr_location *al); 129 struct symbol *thread__find_symbol_fb(struct thread *thread, u8 cpumode, 130 u64 addr, struct addr_location *al); 131 132 void thread__find_cpumode_addr_location(struct thread *thread, u64 addr, 133 bool symbols, struct addr_location *al); 134 135 int thread__memcpy(struct thread *thread, struct machine *machine, 136 void *buf, u64 ip, int len, bool *is64bit); 137 138 static inline struct maps *thread__maps(struct thread *thread) 139 { 140 return RC_CHK_ACCESS(thread)->maps; 141 } 142 143 static inline void thread__set_maps(struct thread *thread, struct maps *maps) 144 { 145 RC_CHK_ACCESS(thread)->maps = maps; 146 } 147 148 static inline pid_t thread__pid(const struct thread *thread) 149 { 150 return RC_CHK_ACCESS(thread)->pid_; 151 } 152 153 static inline void thread__set_pid(struct thread *thread, pid_t pid_) 154 { 155 RC_CHK_ACCESS(thread)->pid_ = pid_; 156 } 157 158 static inline pid_t thread__tid(const struct thread *thread) 159 { 160 return RC_CHK_ACCESS(thread)->tid; 161 } 162 163 static inline void thread__set_tid(struct thread *thread, pid_t tid) 164 { 165 RC_CHK_ACCESS(thread)->tid = tid; 166 } 167 168 static inline pid_t thread__ppid(const struct thread *thread) 169 { 170 return RC_CHK_ACCESS(thread)->ppid; 171 } 172 173 static inline void thread__set_ppid(struct thread *thread, pid_t ppid) 174 { 175 RC_CHK_ACCESS(thread)->ppid = ppid; 176 } 177 178 static inline int thread__cpu(const struct thread *thread) 179 { 180 return RC_CHK_ACCESS(thread)->cpu; 181 } 182 183 static inline void thread__set_cpu(struct thread *thread, int cpu) 184 { 185 RC_CHK_ACCESS(thread)->cpu = cpu; 186 } 187 188 static inline int thread__guest_cpu(const struct thread *thread) 189 { 190 return RC_CHK_ACCESS(thread)->guest_cpu; 191 } 192 193 static inline void thread__set_guest_cpu(struct thread *thread, int guest_cpu) 194 { 195 RC_CHK_ACCESS(thread)->guest_cpu = guest_cpu; 196 } 197 198 static inline refcount_t *thread__refcnt(struct thread *thread) 199 { 200 return &RC_CHK_ACCESS(thread)->refcnt; 201 } 202 203 static inline void thread__set_exited(struct thread *thread, bool exited) 204 { 205 RC_CHK_ACCESS(thread)->exited = exited; 206 } 207 208 static inline bool thread__comm_set(const struct thread *thread) 209 { 210 return RC_CHK_ACCESS(thread)->comm_set; 211 } 212 213 static inline void thread__set_comm_set(struct thread *thread, bool set) 214 { 215 RC_CHK_ACCESS(thread)->comm_set = set; 216 } 217 218 static inline int thread__var_comm_len(const struct thread *thread) 219 { 220 return RC_CHK_ACCESS(thread)->comm_len; 221 } 222 223 static inline void thread__set_comm_len(struct thread *thread, int len) 224 { 225 RC_CHK_ACCESS(thread)->comm_len = len; 226 } 227 228 static inline struct list_head *thread__namespaces_list(struct thread *thread) 229 { 230 return &RC_CHK_ACCESS(thread)->namespaces_list; 231 } 232 233 static inline int thread__namespaces_list_empty(const struct thread *thread) 234 { 235 return list_empty(&RC_CHK_ACCESS(thread)->namespaces_list); 236 } 237 238 static inline struct rw_semaphore *thread__namespaces_lock(struct thread *thread) 239 { 240 return &RC_CHK_ACCESS(thread)->namespaces_lock; 241 } 242 243 static inline struct rw_semaphore *thread__comm_lock(struct thread *thread) 244 { 245 return &RC_CHK_ACCESS(thread)->comm_lock; 246 } 247 248 static inline struct list_head *thread__comm_list(struct thread *thread) 249 SHARED_LOCKS_REQUIRED(thread__comm_lock(thread)) 250 { 251 return &RC_CHK_ACCESS(thread)->comm_list; 252 } 253 254 static inline u64 thread__db_id(const struct thread *thread) 255 { 256 return RC_CHK_ACCESS(thread)->db_id; 257 } 258 259 static inline void thread__set_db_id(struct thread *thread, u64 db_id) 260 { 261 RC_CHK_ACCESS(thread)->db_id = db_id; 262 } 263 264 static inline void *thread__priv(struct thread *thread) 265 { 266 return RC_CHK_ACCESS(thread)->priv; 267 } 268 269 static inline void thread__set_priv(struct thread *thread, void *p) 270 { 271 RC_CHK_ACCESS(thread)->priv = p; 272 } 273 274 static inline struct thread_stack *thread__ts(struct thread *thread) 275 { 276 return RC_CHK_ACCESS(thread)->ts; 277 } 278 279 static inline void thread__set_ts(struct thread *thread, struct thread_stack *ts) 280 { 281 RC_CHK_ACCESS(thread)->ts = ts; 282 } 283 284 static inline struct nsinfo *thread__nsinfo(struct thread *thread) 285 { 286 return RC_CHK_ACCESS(thread)->nsinfo; 287 } 288 289 static inline struct srccode_state *thread__srccode_state(struct thread *thread) 290 { 291 return &RC_CHK_ACCESS(thread)->srccode_state; 292 } 293 294 static inline bool thread__filter(const struct thread *thread) 295 { 296 return RC_CHK_ACCESS(thread)->filter; 297 } 298 299 static inline void thread__set_filter(struct thread *thread, bool filter) 300 { 301 RC_CHK_ACCESS(thread)->filter = filter; 302 } 303 304 static inline int thread__filter_entry_depth(const struct thread *thread) 305 { 306 return RC_CHK_ACCESS(thread)->filter_entry_depth; 307 } 308 309 static inline void thread__set_filter_entry_depth(struct thread *thread, int depth) 310 { 311 RC_CHK_ACCESS(thread)->filter_entry_depth = depth; 312 } 313 314 uint16_t thread__e_machine(struct thread *thread, struct machine *machine, uint32_t *e_flags); 315 316 static inline void thread__set_e_machine(struct thread *thread, uint16_t e_machine) 317 { 318 RC_CHK_ACCESS(thread)->e_machine = e_machine; 319 } 320 321 static inline uint32_t thread__e_flags(const struct thread *thread) 322 { 323 return RC_CHK_ACCESS(thread)->e_flags; 324 } 325 326 static inline void thread__set_e_flags(struct thread *thread, uint32_t e_flags) 327 { 328 RC_CHK_ACCESS(thread)->e_flags = e_flags; 329 } 330 331 332 static inline bool thread__lbr_stitch_enable(const struct thread *thread) 333 { 334 return RC_CHK_ACCESS(thread)->lbr_stitch_enable; 335 } 336 337 static inline void thread__set_lbr_stitch_enable(struct thread *thread, bool en) 338 { 339 RC_CHK_ACCESS(thread)->lbr_stitch_enable = en; 340 } 341 342 static inline struct lbr_stitch *thread__lbr_stitch(struct thread *thread) 343 { 344 return RC_CHK_ACCESS(thread)->lbr_stitch; 345 } 346 347 static inline void thread__set_lbr_stitch(struct thread *thread, struct lbr_stitch *lbrs) 348 { 349 RC_CHK_ACCESS(thread)->lbr_stitch = lbrs; 350 } 351 352 static inline bool thread__is_filtered(struct thread *thread) 353 { 354 if (symbol_conf.comm_list && 355 !strlist__has_entry(symbol_conf.comm_list, thread__comm_str(thread))) { 356 return true; 357 } 358 359 if (symbol_conf.pid_list && 360 !intlist__has_entry(symbol_conf.pid_list, thread__pid(thread))) { 361 return true; 362 } 363 364 if (symbol_conf.tid_list && 365 !intlist__has_entry(symbol_conf.tid_list, thread__tid(thread))) { 366 return true; 367 } 368 369 return false; 370 } 371 372 void thread__free_stitch_list(struct thread *thread); 373 374 void thread__resolve(struct thread *thread, struct addr_location *al, 375 struct perf_sample *sample); 376 377 #endif /* __PERF_THREAD_H */ 378