1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __PERF_MACHINE_H
3 #define __PERF_MACHINE_H
4
5 #include <sys/types.h>
6 #include <linux/rbtree.h>
7 #include "map.h"
8 #include "dso.h"
9 #include "event.h"
10 #include "rwsem.h"
11
12 struct addr_location;
13 struct branch_stack;
14 struct perf_evsel;
15 struct perf_sample;
16 struct symbol;
17 struct thread;
18 union perf_event;
19
20 /* Native host kernel uses -1 as pid index in machine */
21 #define HOST_KERNEL_ID (-1)
22 #define DEFAULT_GUEST_KERNEL_ID (0)
23
24 extern const char *ref_reloc_sym_names[];
25
26 struct vdso_info;
27
28 #define THREADS__TABLE_BITS 8
29 #define THREADS__TABLE_SIZE (1 << THREADS__TABLE_BITS)
30
31 struct threads {
32 struct rb_root entries;
33 struct rw_semaphore lock;
34 unsigned int nr;
35 struct list_head dead;
36 struct thread *last_match;
37 };
38
39 struct machine {
40 struct rb_node rb_node;
41 pid_t pid;
42 u16 id_hdr_size;
43 bool comm_exec;
44 bool kptr_restrict_warned;
45 char *root_dir;
46 char *mmap_name;
47 struct threads threads[THREADS__TABLE_SIZE];
48 struct vdso_info *vdso_info;
49 struct perf_env *env;
50 struct dsos dsos;
51 struct map_groups kmaps;
52 struct map *vmlinux_map;
53 u64 kernel_start;
54 pid_t *current_tid;
55 union { /* Tool specific area */
56 void *priv;
57 u64 db_id;
58 };
59 bool trampolines_mapped;
60 };
61
machine__threads(struct machine * machine,pid_t tid)62 static inline struct threads *machine__threads(struct machine *machine, pid_t tid)
63 {
64 /* Cast it to handle tid == -1 */
65 return &machine->threads[(unsigned int)tid % THREADS__TABLE_SIZE];
66 }
67
68 /*
69 * The main kernel (vmlinux) map
70 */
71 static inline
machine__kernel_map(struct machine * machine)72 struct map *machine__kernel_map(struct machine *machine)
73 {
74 return machine->vmlinux_map;
75 }
76
77 /*
78 * kernel (the one returned by machine__kernel_map()) plus kernel modules maps
79 */
80 static inline
machine__kernel_maps(struct machine * machine)81 struct maps *machine__kernel_maps(struct machine *machine)
82 {
83 return &machine->kmaps.maps;
84 }
85
86 int machine__get_kernel_start(struct machine *machine);
87
machine__kernel_start(struct machine * machine)88 static inline u64 machine__kernel_start(struct machine *machine)
89 {
90 if (!machine->kernel_start)
91 machine__get_kernel_start(machine);
92 return machine->kernel_start;
93 }
94
machine__kernel_ip(struct machine * machine,u64 ip)95 static inline bool machine__kernel_ip(struct machine *machine, u64 ip)
96 {
97 u64 kernel_start = machine__kernel_start(machine);
98
99 return ip >= kernel_start;
100 }
101
102 struct thread *machine__find_thread(struct machine *machine, pid_t pid,
103 pid_t tid);
104 struct comm *machine__thread_exec_comm(struct machine *machine,
105 struct thread *thread);
106
107 int machine__process_comm_event(struct machine *machine, union perf_event *event,
108 struct perf_sample *sample);
109 int machine__process_exit_event(struct machine *machine, union perf_event *event,
110 struct perf_sample *sample);
111 int machine__process_fork_event(struct machine *machine, union perf_event *event,
112 struct perf_sample *sample);
113 int machine__process_lost_event(struct machine *machine, union perf_event *event,
114 struct perf_sample *sample);
115 int machine__process_lost_samples_event(struct machine *machine, union perf_event *event,
116 struct perf_sample *sample);
117 int machine__process_aux_event(struct machine *machine,
118 union perf_event *event);
119 int machine__process_itrace_start_event(struct machine *machine,
120 union perf_event *event);
121 int machine__process_switch_event(struct machine *machine,
122 union perf_event *event);
123 int machine__process_namespaces_event(struct machine *machine,
124 union perf_event *event,
125 struct perf_sample *sample);
126 int machine__process_mmap_event(struct machine *machine, union perf_event *event,
127 struct perf_sample *sample);
128 int machine__process_mmap2_event(struct machine *machine, union perf_event *event,
129 struct perf_sample *sample);
130 int machine__process_event(struct machine *machine, union perf_event *event,
131 struct perf_sample *sample);
132
133 typedef void (*machine__process_t)(struct machine *machine, void *data);
134
135 struct machines {
136 struct machine host;
137 struct rb_root guests;
138 };
139
140 void machines__init(struct machines *machines);
141 void machines__exit(struct machines *machines);
142
143 void machines__process_guests(struct machines *machines,
144 machine__process_t process, void *data);
145
146 struct machine *machines__add(struct machines *machines, pid_t pid,
147 const char *root_dir);
148 struct machine *machines__find_host(struct machines *machines);
149 struct machine *machines__find(struct machines *machines, pid_t pid);
150 struct machine *machines__findnew(struct machines *machines, pid_t pid);
151
152 void machines__set_id_hdr_size(struct machines *machines, u16 id_hdr_size);
153 void machines__set_comm_exec(struct machines *machines, bool comm_exec);
154
155 struct machine *machine__new_host(void);
156 struct machine *machine__new_kallsyms(void);
157 int machine__init(struct machine *machine, const char *root_dir, pid_t pid);
158 void machine__exit(struct machine *machine);
159 void machine__delete_threads(struct machine *machine);
160 void machine__delete(struct machine *machine);
161 void machine__remove_thread(struct machine *machine, struct thread *th);
162
163 struct branch_info *sample__resolve_bstack(struct perf_sample *sample,
164 struct addr_location *al);
165 struct mem_info *sample__resolve_mem(struct perf_sample *sample,
166 struct addr_location *al);
167
168 struct callchain_cursor;
169
170 int thread__resolve_callchain(struct thread *thread,
171 struct callchain_cursor *cursor,
172 struct perf_evsel *evsel,
173 struct perf_sample *sample,
174 struct symbol **parent,
175 struct addr_location *root_al,
176 int max_stack);
177
178 /*
179 * Default guest kernel is defined by parameter --guestkallsyms
180 * and --guestmodules
181 */
machine__is_default_guest(struct machine * machine)182 static inline bool machine__is_default_guest(struct machine *machine)
183 {
184 return machine ? machine->pid == DEFAULT_GUEST_KERNEL_ID : false;
185 }
186
machine__is_host(struct machine * machine)187 static inline bool machine__is_host(struct machine *machine)
188 {
189 return machine ? machine->pid == HOST_KERNEL_ID : false;
190 }
191
192 bool machine__is(struct machine *machine, const char *arch);
193 int machine__nr_cpus_avail(struct machine *machine);
194
195 struct thread *__machine__findnew_thread(struct machine *machine, pid_t pid, pid_t tid);
196 struct thread *machine__findnew_thread(struct machine *machine, pid_t pid, pid_t tid);
197
198 struct dso *machine__findnew_dso(struct machine *machine, const char *filename);
199
200 size_t machine__fprintf(struct machine *machine, FILE *fp);
201
202 static inline
machine__find_kernel_symbol(struct machine * machine,u64 addr,struct map ** mapp)203 struct symbol *machine__find_kernel_symbol(struct machine *machine, u64 addr,
204 struct map **mapp)
205 {
206 return map_groups__find_symbol(&machine->kmaps, addr, mapp);
207 }
208
209 static inline
machine__find_kernel_symbol_by_name(struct machine * machine,const char * name,struct map ** mapp)210 struct symbol *machine__find_kernel_symbol_by_name(struct machine *machine,
211 const char *name,
212 struct map **mapp)
213 {
214 return map_groups__find_symbol_by_name(&machine->kmaps, name, mapp);
215 }
216
217 struct map *machine__findnew_module_map(struct machine *machine, u64 start,
218 const char *filename);
219 int arch__fix_module_text_start(u64 *start, const char *name);
220
221 int machine__load_kallsyms(struct machine *machine, const char *filename);
222
223 int machine__load_vmlinux_path(struct machine *machine);
224
225 size_t machine__fprintf_dsos_buildid(struct machine *machine, FILE *fp,
226 bool (skip)(struct dso *dso, int parm), int parm);
227 size_t machines__fprintf_dsos(struct machines *machines, FILE *fp);
228 size_t machines__fprintf_dsos_buildid(struct machines *machines, FILE *fp,
229 bool (skip)(struct dso *dso, int parm), int parm);
230
231 void machine__destroy_kernel_maps(struct machine *machine);
232 int machine__create_kernel_maps(struct machine *machine);
233
234 int machines__create_kernel_maps(struct machines *machines, pid_t pid);
235 int machines__create_guest_kernel_maps(struct machines *machines);
236 void machines__destroy_kernel_maps(struct machines *machines);
237
238 size_t machine__fprintf_vmlinux_path(struct machine *machine, FILE *fp);
239
240 int machine__for_each_thread(struct machine *machine,
241 int (*fn)(struct thread *thread, void *p),
242 void *priv);
243 int machines__for_each_thread(struct machines *machines,
244 int (*fn)(struct thread *thread, void *p),
245 void *priv);
246
247 int __machine__synthesize_threads(struct machine *machine, struct perf_tool *tool,
248 struct target *target, struct thread_map *threads,
249 perf_event__handler_t process, bool data_mmap,
250 unsigned int proc_map_timeout,
251 unsigned int nr_threads_synthesize);
252 static inline
machine__synthesize_threads(struct machine * machine,struct target * target,struct thread_map * threads,bool data_mmap,unsigned int proc_map_timeout,unsigned int nr_threads_synthesize)253 int machine__synthesize_threads(struct machine *machine, struct target *target,
254 struct thread_map *threads, bool data_mmap,
255 unsigned int proc_map_timeout,
256 unsigned int nr_threads_synthesize)
257 {
258 return __machine__synthesize_threads(machine, NULL, target, threads,
259 perf_event__process, data_mmap,
260 proc_map_timeout,
261 nr_threads_synthesize);
262 }
263
264 pid_t machine__get_current_tid(struct machine *machine, int cpu);
265 int machine__set_current_tid(struct machine *machine, int cpu, pid_t pid,
266 pid_t tid);
267 /*
268 * For use with libtraceevent's tep_set_function_resolver()
269 */
270 char *machine__resolve_kernel_addr(void *vmachine, unsigned long long *addrp, char **modp);
271
272 void machine__get_kallsyms_filename(struct machine *machine, char *buf,
273 size_t bufsz);
274
275 int machine__create_extra_kernel_maps(struct machine *machine,
276 struct dso *kernel);
277
278 /* Kernel-space maps for symbols that are outside the main kernel map and module maps */
279 struct extra_kernel_map {
280 u64 start;
281 u64 end;
282 u64 pgoff;
283 char name[KMAP_NAME_LEN];
284 };
285
286 int machine__create_extra_kernel_map(struct machine *machine,
287 struct dso *kernel,
288 struct extra_kernel_map *xm);
289
290 int machine__map_x86_64_entry_trampolines(struct machine *machine,
291 struct dso *kernel);
292
293 #endif /* __PERF_MACHINE_H */
294
