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_groups.h"
8 #include "dsos.h"
9 #include "rwsem.h"
10
11 struct addr_location;
12 struct branch_stack;
13 struct dso;
14 struct evsel;
15 struct perf_sample;
16 struct symbol;
17 struct target;
18 struct thread;
19 union perf_event;
20
21 /* Native host kernel uses -1 as pid index in machine */
22 #define HOST_KERNEL_ID (-1)
23 #define DEFAULT_GUEST_KERNEL_ID (0)
24
25 extern const char *ref_reloc_sym_names[];
26
27 struct vdso_info;
28
29 #define THREADS__TABLE_BITS 8
30 #define THREADS__TABLE_SIZE (1 << THREADS__TABLE_BITS)
31
32 struct threads {
33 struct rb_root_cached entries;
34 struct rw_semaphore lock;
35 unsigned int nr;
36 struct list_head dead;
37 struct thread *last_match;
38 };
39
40 struct machine {
41 struct rb_node rb_node;
42 pid_t pid;
43 u16 id_hdr_size;
44 bool comm_exec;
45 bool kptr_restrict_warned;
46 bool single_address_space;
47 char *root_dir;
48 char *mmap_name;
49 struct threads threads[THREADS__TABLE_SIZE];
50 struct vdso_info *vdso_info;
51 struct perf_env *env;
52 struct dsos dsos;
53 struct map_groups kmaps;
54 struct map *vmlinux_map;
55 u64 kernel_start;
56 pid_t *current_tid;
57 union { /* Tool specific area */
58 void *priv;
59 u64 db_id;
60 };
61 bool trampolines_mapped;
62 };
63
machine__threads(struct machine * machine,pid_t tid)64 static inline struct threads *machine__threads(struct machine *machine, pid_t tid)
65 {
66 /* Cast it to handle tid == -1 */
67 return &machine->threads[(unsigned int)tid % THREADS__TABLE_SIZE];
68 }
69
70 /*
71 * The main kernel (vmlinux) map
72 */
73 static inline
machine__kernel_map(struct machine * machine)74 struct map *machine__kernel_map(struct machine *machine)
75 {
76 return machine->vmlinux_map;
77 }
78
79 /*
80 * kernel (the one returned by machine__kernel_map()) plus kernel modules maps
81 */
82 static inline
machine__kernel_maps(struct machine * machine)83 struct maps *machine__kernel_maps(struct machine *machine)
84 {
85 return &machine->kmaps.maps;
86 }
87
88 int machine__get_kernel_start(struct machine *machine);
89
machine__kernel_start(struct machine * machine)90 static inline u64 machine__kernel_start(struct machine *machine)
91 {
92 if (!machine->kernel_start)
93 machine__get_kernel_start(machine);
94 return machine->kernel_start;
95 }
96
machine__kernel_ip(struct machine * machine,u64 ip)97 static inline bool machine__kernel_ip(struct machine *machine, u64 ip)
98 {
99 u64 kernel_start = machine__kernel_start(machine);
100
101 return ip >= kernel_start;
102 }
103
104 u8 machine__addr_cpumode(struct machine *machine, u8 cpumode, u64 addr);
105
106 struct thread *machine__find_thread(struct machine *machine, pid_t pid,
107 pid_t tid);
108 struct comm *machine__thread_exec_comm(struct machine *machine,
109 struct thread *thread);
110
111 int machine__process_comm_event(struct machine *machine, union perf_event *event,
112 struct perf_sample *sample);
113 int machine__process_exit_event(struct machine *machine, union perf_event *event,
114 struct perf_sample *sample);
115 int machine__process_fork_event(struct machine *machine, union perf_event *event,
116 struct perf_sample *sample);
117 int machine__process_lost_event(struct machine *machine, union perf_event *event,
118 struct perf_sample *sample);
119 int machine__process_lost_samples_event(struct machine *machine, union perf_event *event,
120 struct perf_sample *sample);
121 int machine__process_aux_event(struct machine *machine,
122 union perf_event *event);
123 int machine__process_itrace_start_event(struct machine *machine,
124 union perf_event *event);
125 int machine__process_switch_event(struct machine *machine,
126 union perf_event *event);
127 int machine__process_namespaces_event(struct machine *machine,
128 union perf_event *event,
129 struct perf_sample *sample);
130 int machine__process_mmap_event(struct machine *machine, union perf_event *event,
131 struct perf_sample *sample);
132 int machine__process_mmap2_event(struct machine *machine, union perf_event *event,
133 struct perf_sample *sample);
134 int machine__process_ksymbol(struct machine *machine,
135 union perf_event *event,
136 struct perf_sample *sample);
137 int machine__process_event(struct machine *machine, union perf_event *event,
138 struct perf_sample *sample);
139
140 typedef void (*machine__process_t)(struct machine *machine, void *data);
141
142 struct machines {
143 struct machine host;
144 struct rb_root_cached guests;
145 };
146
147 void machines__init(struct machines *machines);
148 void machines__exit(struct machines *machines);
149
150 void machines__process_guests(struct machines *machines,
151 machine__process_t process, void *data);
152
153 struct machine *machines__add(struct machines *machines, pid_t pid,
154 const char *root_dir);
155 struct machine *machines__find_host(struct machines *machines);
156 struct machine *machines__find(struct machines *machines, pid_t pid);
157 struct machine *machines__findnew(struct machines *machines, pid_t pid);
158
159 void machines__set_id_hdr_size(struct machines *machines, u16 id_hdr_size);
160 void machines__set_comm_exec(struct machines *machines, bool comm_exec);
161
162 struct machine *machine__new_host(void);
163 struct machine *machine__new_kallsyms(void);
164 int machine__init(struct machine *machine, const char *root_dir, pid_t pid);
165 void machine__exit(struct machine *machine);
166 void machine__delete_threads(struct machine *machine);
167 void machine__delete(struct machine *machine);
168 void machine__remove_thread(struct machine *machine, struct thread *th);
169
170 struct branch_info *sample__resolve_bstack(struct perf_sample *sample,
171 struct addr_location *al);
172 struct mem_info *sample__resolve_mem(struct perf_sample *sample,
173 struct addr_location *al);
174
175 struct callchain_cursor;
176
177 int thread__resolve_callchain(struct thread *thread,
178 struct callchain_cursor *cursor,
179 struct evsel *evsel,
180 struct perf_sample *sample,
181 struct symbol **parent,
182 struct addr_location *root_al,
183 int max_stack);
184
185 /*
186 * Default guest kernel is defined by parameter --guestkallsyms
187 * and --guestmodules
188 */
machine__is_default_guest(struct machine * machine)189 static inline bool machine__is_default_guest(struct machine *machine)
190 {
191 return machine ? machine->pid == DEFAULT_GUEST_KERNEL_ID : false;
192 }
193
machine__is_host(struct machine * machine)194 static inline bool machine__is_host(struct machine *machine)
195 {
196 return machine ? machine->pid == HOST_KERNEL_ID : false;
197 }
198
199 bool machine__is(struct machine *machine, const char *arch);
200 int machine__nr_cpus_avail(struct machine *machine);
201
202 struct thread *__machine__findnew_thread(struct machine *machine, pid_t pid, pid_t tid);
203 struct thread *machine__findnew_thread(struct machine *machine, pid_t pid, pid_t tid);
204
205 struct dso *machine__findnew_dso(struct machine *machine, const char *filename);
206
207 size_t machine__fprintf(struct machine *machine, FILE *fp);
208
209 static inline
machine__find_kernel_symbol(struct machine * machine,u64 addr,struct map ** mapp)210 struct symbol *machine__find_kernel_symbol(struct machine *machine, u64 addr,
211 struct map **mapp)
212 {
213 return map_groups__find_symbol(&machine->kmaps, addr, mapp);
214 }
215
216 static inline
machine__find_kernel_symbol_by_name(struct machine * machine,const char * name,struct map ** mapp)217 struct symbol *machine__find_kernel_symbol_by_name(struct machine *machine,
218 const char *name,
219 struct map **mapp)
220 {
221 return map_groups__find_symbol_by_name(&machine->kmaps, name, mapp);
222 }
223
224 struct map *machine__findnew_module_map(struct machine *machine, u64 start,
225 const char *filename);
226 int arch__fix_module_text_start(u64 *start, u64 *size, const char *name);
227
228 int machine__load_kallsyms(struct machine *machine, const char *filename);
229
230 int machine__load_vmlinux_path(struct machine *machine);
231
232 size_t machine__fprintf_dsos_buildid(struct machine *machine, FILE *fp,
233 bool (skip)(struct dso *dso, int parm), int parm);
234 size_t machines__fprintf_dsos(struct machines *machines, FILE *fp);
235 size_t machines__fprintf_dsos_buildid(struct machines *machines, FILE *fp,
236 bool (skip)(struct dso *dso, int parm), int parm);
237
238 void machine__destroy_kernel_maps(struct machine *machine);
239 int machine__create_kernel_maps(struct machine *machine);
240
241 int machines__create_kernel_maps(struct machines *machines, pid_t pid);
242 int machines__create_guest_kernel_maps(struct machines *machines);
243 void machines__destroy_kernel_maps(struct machines *machines);
244
245 size_t machine__fprintf_vmlinux_path(struct machine *machine, FILE *fp);
246
247 int machine__for_each_thread(struct machine *machine,
248 int (*fn)(struct thread *thread, void *p),
249 void *priv);
250 int machines__for_each_thread(struct machines *machines,
251 int (*fn)(struct thread *thread, void *p),
252 void *priv);
253
254 pid_t machine__get_current_tid(struct machine *machine, int cpu);
255 int machine__set_current_tid(struct machine *machine, int cpu, pid_t pid,
256 pid_t tid);
257 /*
258 * For use with libtraceevent's tep_set_function_resolver()
259 */
260 char *machine__resolve_kernel_addr(void *vmachine, unsigned long long *addrp, char **modp);
261
262 void machine__get_kallsyms_filename(struct machine *machine, char *buf,
263 size_t bufsz);
264
265 int machine__create_extra_kernel_maps(struct machine *machine,
266 struct dso *kernel);
267
268 /* Kernel-space maps for symbols that are outside the main kernel map and module maps */
269 struct extra_kernel_map {
270 u64 start;
271 u64 end;
272 u64 pgoff;
273 char name[KMAP_NAME_LEN];
274 };
275
276 int machine__create_extra_kernel_map(struct machine *machine,
277 struct dso *kernel,
278 struct extra_kernel_map *xm);
279
280 int machine__map_x86_64_entry_trampolines(struct machine *machine,
281 struct dso *kernel);
282
283 #endif /* __PERF_MACHINE_H */
284