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 /* LBR call stack stitch */ 65 bool lbr_stitch_enable; 66 struct lbr_stitch *lbr_stitch; 67 }; 68 69 struct machine; 70 struct namespaces; 71 struct comm; 72 73 struct thread *thread__new(pid_t pid, pid_t tid); 74 int thread__init_maps(struct thread *thread, struct machine *machine); 75 void thread__delete(struct thread *thread); 76 77 void thread__set_priv_destructor(void (*destructor)(void *priv)); 78 79 struct thread *thread__get(struct thread *thread); 80 void thread__put(struct thread *thread); 81 82 static inline void __thread__zput(struct thread **thread) 83 { 84 thread__put(*thread); 85 *thread = NULL; 86 } 87 88 #define thread__zput(thread) __thread__zput(&thread) 89 90 struct namespaces *thread__namespaces(struct thread *thread); 91 int thread__set_namespaces(struct thread *thread, u64 timestamp, 92 struct perf_record_namespaces *event); 93 94 int __thread__set_comm(struct thread *thread, const char *comm, u64 timestamp, 95 bool exec); 96 static inline int thread__set_comm(struct thread *thread, const char *comm, 97 u64 timestamp) 98 { 99 return __thread__set_comm(thread, comm, timestamp, false); 100 } 101 102 int thread__set_comm_from_proc(struct thread *thread); 103 104 int thread__comm_len(struct thread *thread); 105 struct comm *thread__comm(struct thread *thread); 106 struct comm *thread__exec_comm(struct thread *thread); 107 const char *thread__comm_str(struct thread *thread); 108 int thread__insert_map(struct thread *thread, struct map *map); 109 int thread__fork(struct thread *thread, struct thread *parent, u64 timestamp, bool do_maps_clone); 110 size_t thread__fprintf(struct thread *thread, FILE *fp); 111 112 struct thread *thread__main_thread(struct machine *machine, struct thread *thread); 113 114 struct map *thread__find_map(struct thread *thread, u8 cpumode, u64 addr, 115 struct addr_location *al); 116 struct map *thread__find_map_fb(struct thread *thread, u8 cpumode, u64 addr, 117 struct addr_location *al); 118 119 struct symbol *thread__find_symbol(struct thread *thread, u8 cpumode, 120 u64 addr, struct addr_location *al); 121 struct symbol *thread__find_symbol_fb(struct thread *thread, u8 cpumode, 122 u64 addr, struct addr_location *al); 123 124 void thread__find_cpumode_addr_location(struct thread *thread, u64 addr, 125 struct addr_location *al); 126 127 int thread__memcpy(struct thread *thread, struct machine *machine, 128 void *buf, u64 ip, int len, bool *is64bit); 129 130 static inline struct maps *thread__maps(struct thread *thread) 131 { 132 return RC_CHK_ACCESS(thread)->maps; 133 } 134 135 static inline void thread__set_maps(struct thread *thread, struct maps *maps) 136 { 137 RC_CHK_ACCESS(thread)->maps = maps; 138 } 139 140 static inline pid_t thread__pid(const struct thread *thread) 141 { 142 return RC_CHK_ACCESS(thread)->pid_; 143 } 144 145 static inline void thread__set_pid(struct thread *thread, pid_t pid_) 146 { 147 RC_CHK_ACCESS(thread)->pid_ = pid_; 148 } 149 150 static inline pid_t thread__tid(const struct thread *thread) 151 { 152 return RC_CHK_ACCESS(thread)->tid; 153 } 154 155 static inline void thread__set_tid(struct thread *thread, pid_t tid) 156 { 157 RC_CHK_ACCESS(thread)->tid = tid; 158 } 159 160 static inline pid_t thread__ppid(const struct thread *thread) 161 { 162 return RC_CHK_ACCESS(thread)->ppid; 163 } 164 165 static inline void thread__set_ppid(struct thread *thread, pid_t ppid) 166 { 167 RC_CHK_ACCESS(thread)->ppid = ppid; 168 } 169 170 static inline int thread__cpu(const struct thread *thread) 171 { 172 return RC_CHK_ACCESS(thread)->cpu; 173 } 174 175 static inline void thread__set_cpu(struct thread *thread, int cpu) 176 { 177 RC_CHK_ACCESS(thread)->cpu = cpu; 178 } 179 180 static inline int thread__guest_cpu(const struct thread *thread) 181 { 182 return RC_CHK_ACCESS(thread)->guest_cpu; 183 } 184 185 static inline void thread__set_guest_cpu(struct thread *thread, int guest_cpu) 186 { 187 RC_CHK_ACCESS(thread)->guest_cpu = guest_cpu; 188 } 189 190 static inline refcount_t *thread__refcnt(struct thread *thread) 191 { 192 return &RC_CHK_ACCESS(thread)->refcnt; 193 } 194 195 static inline void thread__set_exited(struct thread *thread, bool exited) 196 { 197 RC_CHK_ACCESS(thread)->exited = exited; 198 } 199 200 static inline bool thread__comm_set(const struct thread *thread) 201 { 202 return RC_CHK_ACCESS(thread)->comm_set; 203 } 204 205 static inline void thread__set_comm_set(struct thread *thread, bool set) 206 { 207 RC_CHK_ACCESS(thread)->comm_set = set; 208 } 209 210 static inline int thread__var_comm_len(const struct thread *thread) 211 { 212 return RC_CHK_ACCESS(thread)->comm_len; 213 } 214 215 static inline void thread__set_comm_len(struct thread *thread, int len) 216 { 217 RC_CHK_ACCESS(thread)->comm_len = len; 218 } 219 220 static inline struct list_head *thread__namespaces_list(struct thread *thread) 221 { 222 return &RC_CHK_ACCESS(thread)->namespaces_list; 223 } 224 225 static inline int thread__namespaces_list_empty(const struct thread *thread) 226 { 227 return list_empty(&RC_CHK_ACCESS(thread)->namespaces_list); 228 } 229 230 static inline struct rw_semaphore *thread__namespaces_lock(struct thread *thread) 231 { 232 return &RC_CHK_ACCESS(thread)->namespaces_lock; 233 } 234 235 static inline struct list_head *thread__comm_list(struct thread *thread) 236 { 237 return &RC_CHK_ACCESS(thread)->comm_list; 238 } 239 240 static inline struct rw_semaphore *thread__comm_lock(struct thread *thread) 241 { 242 return &RC_CHK_ACCESS(thread)->comm_lock; 243 } 244 245 static inline u64 thread__db_id(const struct thread *thread) 246 { 247 return RC_CHK_ACCESS(thread)->db_id; 248 } 249 250 static inline void thread__set_db_id(struct thread *thread, u64 db_id) 251 { 252 RC_CHK_ACCESS(thread)->db_id = db_id; 253 } 254 255 static inline void *thread__priv(struct thread *thread) 256 { 257 return RC_CHK_ACCESS(thread)->priv; 258 } 259 260 static inline void thread__set_priv(struct thread *thread, void *p) 261 { 262 RC_CHK_ACCESS(thread)->priv = p; 263 } 264 265 static inline struct thread_stack *thread__ts(struct thread *thread) 266 { 267 return RC_CHK_ACCESS(thread)->ts; 268 } 269 270 static inline void thread__set_ts(struct thread *thread, struct thread_stack *ts) 271 { 272 RC_CHK_ACCESS(thread)->ts = ts; 273 } 274 275 static inline struct nsinfo *thread__nsinfo(struct thread *thread) 276 { 277 return RC_CHK_ACCESS(thread)->nsinfo; 278 } 279 280 static inline struct srccode_state *thread__srccode_state(struct thread *thread) 281 { 282 return &RC_CHK_ACCESS(thread)->srccode_state; 283 } 284 285 static inline bool thread__filter(const struct thread *thread) 286 { 287 return RC_CHK_ACCESS(thread)->filter; 288 } 289 290 static inline void thread__set_filter(struct thread *thread, bool filter) 291 { 292 RC_CHK_ACCESS(thread)->filter = filter; 293 } 294 295 static inline int thread__filter_entry_depth(const struct thread *thread) 296 { 297 return RC_CHK_ACCESS(thread)->filter_entry_depth; 298 } 299 300 static inline void thread__set_filter_entry_depth(struct thread *thread, int depth) 301 { 302 RC_CHK_ACCESS(thread)->filter_entry_depth = depth; 303 } 304 305 static inline bool thread__lbr_stitch_enable(const struct thread *thread) 306 { 307 return RC_CHK_ACCESS(thread)->lbr_stitch_enable; 308 } 309 310 static inline void thread__set_lbr_stitch_enable(struct thread *thread, bool en) 311 { 312 RC_CHK_ACCESS(thread)->lbr_stitch_enable = en; 313 } 314 315 static inline struct lbr_stitch *thread__lbr_stitch(struct thread *thread) 316 { 317 return RC_CHK_ACCESS(thread)->lbr_stitch; 318 } 319 320 static inline void thread__set_lbr_stitch(struct thread *thread, struct lbr_stitch *lbrs) 321 { 322 RC_CHK_ACCESS(thread)->lbr_stitch = lbrs; 323 } 324 325 static inline bool thread__is_filtered(struct thread *thread) 326 { 327 if (symbol_conf.comm_list && 328 !strlist__has_entry(symbol_conf.comm_list, thread__comm_str(thread))) { 329 return true; 330 } 331 332 if (symbol_conf.pid_list && 333 !intlist__has_entry(symbol_conf.pid_list, thread__pid(thread))) { 334 return true; 335 } 336 337 if (symbol_conf.tid_list && 338 !intlist__has_entry(symbol_conf.tid_list, thread__tid(thread))) { 339 return true; 340 } 341 342 return false; 343 } 344 345 void thread__free_stitch_list(struct thread *thread); 346 347 void thread__resolve(struct thread *thread, struct addr_location *al, 348 struct perf_sample *sample); 349 350 #endif /* __PERF_THREAD_H */ 351