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