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 "maps.h"
8 #include "dsos.h"
9 #include "rwsem.h"
10
11 struct addr_location;
12 struct branch_stack;
13 struct dso;
14 struct dso_id;
15 struct evsel;
16 struct perf_sample;
17 struct symbol;
18 struct target;
19 struct thread;
20 union perf_event;
21
22 /* Native host kernel uses -1 as pid index in machine */
23 #define HOST_KERNEL_ID (-1)
24 #define DEFAULT_GUEST_KERNEL_ID (0)
25
26 extern const char *ref_reloc_sym_names[];
27
28 struct vdso_info;
29
30 #define THREADS__TABLE_BITS 8
31 #define THREADS__TABLE_SIZE (1 << THREADS__TABLE_BITS)
32
33 struct threads {
34 struct rb_root_cached entries;
35 struct rw_semaphore lock;
36 unsigned int nr;
37 struct list_head dead;
38 struct thread *last_match;
39 };
40
41 struct machine {
42 struct rb_node rb_node;
43 pid_t pid;
44 u16 id_hdr_size;
45 bool comm_exec;
46 bool kptr_restrict_warned;
47 bool single_address_space;
48 char *root_dir;
49 char *mmap_name;
50 struct threads threads[THREADS__TABLE_SIZE];
51 struct vdso_info *vdso_info;
52 struct perf_env *env;
53 struct dsos dsos;
54 struct maps kmaps;
55 struct map *vmlinux_map;
56 u64 kernel_start;
57 pid_t *current_tid;
58 union { /* Tool specific area */
59 void *priv;
60 u64 db_id;
61 };
62 bool trampolines_mapped;
63 };
64
machine__threads(struct machine * machine,pid_t tid)65 static inline struct threads *machine__threads(struct machine *machine, pid_t tid)
66 {
67 /* Cast it to handle tid == -1 */
68 return &machine->threads[(unsigned int)tid % THREADS__TABLE_SIZE];
69 }
70
71 /*
72 * The main kernel (vmlinux) map
73 */
74 static inline
machine__kernel_map(struct machine * machine)75 struct map *machine__kernel_map(struct machine *machine)
76 {
77 return machine->vmlinux_map;
78 }
79
80 /*
81 * kernel (the one returned by machine__kernel_map()) plus kernel modules maps
82 */
83 static inline
machine__kernel_maps(struct machine * machine)84 struct maps *machine__kernel_maps(struct machine *machine)
85 {
86 return &machine->kmaps;
87 }
88
89 int machine__get_kernel_start(struct machine *machine);
90
machine__kernel_start(struct machine * machine)91 static inline u64 machine__kernel_start(struct machine *machine)
92 {
93 if (!machine->kernel_start)
94 machine__get_kernel_start(machine);
95 return machine->kernel_start;
96 }
97
machine__kernel_ip(struct machine * machine,u64 ip)98 static inline bool machine__kernel_ip(struct machine *machine, u64 ip)
99 {
100 u64 kernel_start = machine__kernel_start(machine);
101
102 return ip >= kernel_start;
103 }
104
105 u8 machine__addr_cpumode(struct machine *machine, u8 cpumode, u64 addr);
106
107 struct thread *machine__find_thread(struct machine *machine, pid_t pid,
108 pid_t tid);
109 struct thread *machine__idle_thread(struct machine *machine);
110 struct comm *machine__thread_exec_comm(struct machine *machine,
111 struct thread *thread);
112
113 int machine__process_comm_event(struct machine *machine, union perf_event *event,
114 struct perf_sample *sample);
115 int machine__process_exit_event(struct machine *machine, union perf_event *event,
116 struct perf_sample *sample);
117 int machine__process_fork_event(struct machine *machine, union perf_event *event,
118 struct perf_sample *sample);
119 int machine__process_lost_event(struct machine *machine, union perf_event *event,
120 struct perf_sample *sample);
121 int machine__process_lost_samples_event(struct machine *machine, union perf_event *event,
122 struct perf_sample *sample);
123 int machine__process_aux_event(struct machine *machine,
124 union perf_event *event);
125 int machine__process_itrace_start_event(struct machine *machine,
126 union perf_event *event);
127 int machine__process_switch_event(struct machine *machine,
128 union perf_event *event);
129 int machine__process_namespaces_event(struct machine *machine,
130 union perf_event *event,
131 struct perf_sample *sample);
132 int machine__process_cgroup_event(struct machine *machine,
133 union perf_event *event,
134 struct perf_sample *sample);
135 int machine__process_mmap_event(struct machine *machine, union perf_event *event,
136 struct perf_sample *sample);
137 int machine__process_mmap2_event(struct machine *machine, union perf_event *event,
138 struct perf_sample *sample);
139 int machine__process_ksymbol(struct machine *machine,
140 union perf_event *event,
141 struct perf_sample *sample);
142 int machine__process_text_poke(struct machine *machine,
143 union perf_event *event,
144 struct perf_sample *sample);
145 int machine__process_event(struct machine *machine, union perf_event *event,
146 struct perf_sample *sample);
147
148 typedef void (*machine__process_t)(struct machine *machine, void *data);
149
150 struct machines {
151 struct machine host;
152 struct rb_root_cached guests;
153 };
154
155 void machines__init(struct machines *machines);
156 void machines__exit(struct machines *machines);
157
158 void machines__process_guests(struct machines *machines,
159 machine__process_t process, void *data);
160
161 struct machine *machines__add(struct machines *machines, pid_t pid,
162 const char *root_dir);
163 struct machine *machines__find_host(struct machines *machines);
164 struct machine *machines__find(struct machines *machines, pid_t pid);
165 struct machine *machines__findnew(struct machines *machines, pid_t pid);
166 struct machine *machines__find_guest(struct machines *machines, pid_t pid);
167
168 void machines__set_id_hdr_size(struct machines *machines, u16 id_hdr_size);
169 void machines__set_comm_exec(struct machines *machines, bool comm_exec);
170
171 struct machine *machine__new_host(void);
172 struct machine *machine__new_kallsyms(void);
173 int machine__init(struct machine *machine, const char *root_dir, pid_t pid);
174 void machine__exit(struct machine *machine);
175 void machine__delete_threads(struct machine *machine);
176 void machine__delete(struct machine *machine);
177 void machine__remove_thread(struct machine *machine, struct thread *th);
178
179 struct branch_info *sample__resolve_bstack(struct perf_sample *sample,
180 struct addr_location *al);
181 struct mem_info *sample__resolve_mem(struct perf_sample *sample,
182 struct addr_location *al);
183
184 struct callchain_cursor;
185
186 int thread__resolve_callchain(struct thread *thread,
187 struct callchain_cursor *cursor,
188 struct evsel *evsel,
189 struct perf_sample *sample,
190 struct symbol **parent,
191 struct addr_location *root_al,
192 int max_stack);
193
194 /*
195 * Default guest kernel is defined by parameter --guestkallsyms
196 * and --guestmodules
197 */
machine__is_default_guest(struct machine * machine)198 static inline bool machine__is_default_guest(struct machine *machine)
199 {
200 return machine ? machine->pid == DEFAULT_GUEST_KERNEL_ID : false;
201 }
202
machine__is_host(struct machine * machine)203 static inline bool machine__is_host(struct machine *machine)
204 {
205 return machine ? machine->pid == HOST_KERNEL_ID : false;
206 }
207
208 bool machine__is(struct machine *machine, const char *arch);
209 int machine__nr_cpus_avail(struct machine *machine);
210
211 struct thread *__machine__findnew_thread(struct machine *machine, pid_t pid, pid_t tid);
212 struct thread *machine__findnew_thread(struct machine *machine, pid_t pid, pid_t tid);
213
214 struct dso *machine__findnew_dso_id(struct machine *machine, const char *filename, struct dso_id *id);
215 struct dso *machine__findnew_dso(struct machine *machine, const char *filename);
216
217 size_t machine__fprintf(struct machine *machine, FILE *fp);
218
219 static inline
machine__find_kernel_symbol(struct machine * machine,u64 addr,struct map ** mapp)220 struct symbol *machine__find_kernel_symbol(struct machine *machine, u64 addr,
221 struct map **mapp)
222 {
223 return maps__find_symbol(&machine->kmaps, addr, mapp);
224 }
225
226 static inline
machine__find_kernel_symbol_by_name(struct machine * machine,const char * name,struct map ** mapp)227 struct symbol *machine__find_kernel_symbol_by_name(struct machine *machine,
228 const char *name,
229 struct map **mapp)
230 {
231 return maps__find_symbol_by_name(&machine->kmaps, name, mapp);
232 }
233
234 int arch__fix_module_text_start(u64 *start, u64 *size, const char *name);
235
236 int machine__load_kallsyms(struct machine *machine, const char *filename);
237
238 int machine__load_vmlinux_path(struct machine *machine);
239
240 size_t machine__fprintf_dsos_buildid(struct machine *machine, FILE *fp,
241 bool (skip)(struct dso *dso, int parm), int parm);
242 size_t machines__fprintf_dsos(struct machines *machines, FILE *fp);
243 size_t machines__fprintf_dsos_buildid(struct machines *machines, FILE *fp,
244 bool (skip)(struct dso *dso, int parm), int parm);
245
246 void machine__destroy_kernel_maps(struct machine *machine);
247 int machine__create_kernel_maps(struct machine *machine);
248
249 int machines__create_kernel_maps(struct machines *machines, pid_t pid);
250 int machines__create_guest_kernel_maps(struct machines *machines);
251 void machines__destroy_kernel_maps(struct machines *machines);
252
253 size_t machine__fprintf_vmlinux_path(struct machine *machine, FILE *fp);
254
255 typedef int (*machine__dso_t)(struct dso *dso, struct machine *machine, void *priv);
256
257 int machine__for_each_dso(struct machine *machine, machine__dso_t fn,
258 void *priv);
259 int machine__for_each_thread(struct machine *machine,
260 int (*fn)(struct thread *thread, void *p),
261 void *priv);
262 int machines__for_each_thread(struct machines *machines,
263 int (*fn)(struct thread *thread, void *p),
264 void *priv);
265
266 pid_t machine__get_current_tid(struct machine *machine, int cpu);
267 int machine__set_current_tid(struct machine *machine, int cpu, pid_t pid,
268 pid_t tid);
269 /*
270 * For use with libtraceevent's tep_set_function_resolver()
271 */
272 char *machine__resolve_kernel_addr(void *vmachine, unsigned long long *addrp, char **modp);
273
274 void machine__get_kallsyms_filename(struct machine *machine, char *buf,
275 size_t bufsz);
276
277 int machine__create_extra_kernel_maps(struct machine *machine,
278 struct dso *kernel);
279
280 /* Kernel-space maps for symbols that are outside the main kernel map and module maps */
281 struct extra_kernel_map {
282 u64 start;
283 u64 end;
284 u64 pgoff;
285 char name[KMAP_NAME_LEN];
286 };
287
288 int machine__create_extra_kernel_map(struct machine *machine,
289 struct dso *kernel,
290 struct extra_kernel_map *xm);
291
292 int machine__map_x86_64_entry_trampolines(struct machine *machine,
293 struct dso *kernel);
294
295 #endif /* __PERF_MACHINE_H */
296
