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 comm *machine__thread_exec_comm(struct machine *machine,
110 struct thread *thread);
111
112 int machine__process_comm_event(struct machine *machine, union perf_event *event,
113 struct perf_sample *sample);
114 int machine__process_exit_event(struct machine *machine, union perf_event *event,
115 struct perf_sample *sample);
116 int machine__process_fork_event(struct machine *machine, union perf_event *event,
117 struct perf_sample *sample);
118 int machine__process_lost_event(struct machine *machine, union perf_event *event,
119 struct perf_sample *sample);
120 int machine__process_lost_samples_event(struct machine *machine, union perf_event *event,
121 struct perf_sample *sample);
122 int machine__process_aux_event(struct machine *machine,
123 union perf_event *event);
124 int machine__process_itrace_start_event(struct machine *machine,
125 union perf_event *event);
126 int machine__process_switch_event(struct machine *machine,
127 union perf_event *event);
128 int machine__process_namespaces_event(struct machine *machine,
129 union perf_event *event,
130 struct perf_sample *sample);
131 int machine__process_cgroup_event(struct machine *machine,
132 union perf_event *event,
133 struct perf_sample *sample);
134 int machine__process_mmap_event(struct machine *machine, union perf_event *event,
135 struct perf_sample *sample);
136 int machine__process_mmap2_event(struct machine *machine, union perf_event *event,
137 struct perf_sample *sample);
138 int machine__process_ksymbol(struct machine *machine,
139 union perf_event *event,
140 struct perf_sample *sample);
141 int machine__process_text_poke(struct machine *machine,
142 union perf_event *event,
143 struct perf_sample *sample);
144 int machine__process_event(struct machine *machine, union perf_event *event,
145 struct perf_sample *sample);
146
147 typedef void (*machine__process_t)(struct machine *machine, void *data);
148
149 struct machines {
150 struct machine host;
151 struct rb_root_cached guests;
152 };
153
154 void machines__init(struct machines *machines);
155 void machines__exit(struct machines *machines);
156
157 void machines__process_guests(struct machines *machines,
158 machine__process_t process, void *data);
159
160 struct machine *machines__add(struct machines *machines, pid_t pid,
161 const char *root_dir);
162 struct machine *machines__find_host(struct machines *machines);
163 struct machine *machines__find(struct machines *machines, pid_t pid);
164 struct machine *machines__findnew(struct machines *machines, pid_t pid);
165
166 void machines__set_id_hdr_size(struct machines *machines, u16 id_hdr_size);
167 void machines__set_comm_exec(struct machines *machines, bool comm_exec);
168
169 struct machine *machine__new_host(void);
170 struct machine *machine__new_kallsyms(void);
171 int machine__init(struct machine *machine, const char *root_dir, pid_t pid);
172 void machine__exit(struct machine *machine);
173 void machine__delete_threads(struct machine *machine);
174 void machine__delete(struct machine *machine);
175 void machine__remove_thread(struct machine *machine, struct thread *th);
176
177 struct branch_info *sample__resolve_bstack(struct perf_sample *sample,
178 struct addr_location *al);
179 struct mem_info *sample__resolve_mem(struct perf_sample *sample,
180 struct addr_location *al);
181
182 struct callchain_cursor;
183
184 int thread__resolve_callchain(struct thread *thread,
185 struct callchain_cursor *cursor,
186 struct evsel *evsel,
187 struct perf_sample *sample,
188 struct symbol **parent,
189 struct addr_location *root_al,
190 int max_stack);
191
192 /*
193 * Default guest kernel is defined by parameter --guestkallsyms
194 * and --guestmodules
195 */
machine__is_default_guest(struct machine * machine)196 static inline bool machine__is_default_guest(struct machine *machine)
197 {
198 return machine ? machine->pid == DEFAULT_GUEST_KERNEL_ID : false;
199 }
200
machine__is_host(struct machine * machine)201 static inline bool machine__is_host(struct machine *machine)
202 {
203 return machine ? machine->pid == HOST_KERNEL_ID : false;
204 }
205
206 bool machine__is(struct machine *machine, const char *arch);
207 int machine__nr_cpus_avail(struct machine *machine);
208
209 struct thread *__machine__findnew_thread(struct machine *machine, pid_t pid, pid_t tid);
210 struct thread *machine__findnew_thread(struct machine *machine, pid_t pid, pid_t tid);
211
212 struct dso *machine__findnew_dso_id(struct machine *machine, const char *filename, struct dso_id *id);
213 struct dso *machine__findnew_dso(struct machine *machine, const char *filename);
214
215 size_t machine__fprintf(struct machine *machine, FILE *fp);
216
217 static inline
machine__find_kernel_symbol(struct machine * machine,u64 addr,struct map ** mapp)218 struct symbol *machine__find_kernel_symbol(struct machine *machine, u64 addr,
219 struct map **mapp)
220 {
221 return maps__find_symbol(&machine->kmaps, addr, mapp);
222 }
223
224 static inline
machine__find_kernel_symbol_by_name(struct machine * machine,const char * name,struct map ** mapp)225 struct symbol *machine__find_kernel_symbol_by_name(struct machine *machine,
226 const char *name,
227 struct map **mapp)
228 {
229 return maps__find_symbol_by_name(&machine->kmaps, name, mapp);
230 }
231
232 int arch__fix_module_text_start(u64 *start, u64 *size, const char *name);
233
234 int machine__load_kallsyms(struct machine *machine, const char *filename);
235
236 int machine__load_vmlinux_path(struct machine *machine);
237
238 size_t machine__fprintf_dsos_buildid(struct machine *machine, FILE *fp,
239 bool (skip)(struct dso *dso, int parm), int parm);
240 size_t machines__fprintf_dsos(struct machines *machines, FILE *fp);
241 size_t machines__fprintf_dsos_buildid(struct machines *machines, FILE *fp,
242 bool (skip)(struct dso *dso, int parm), int parm);
243
244 void machine__destroy_kernel_maps(struct machine *machine);
245 int machine__create_kernel_maps(struct machine *machine);
246
247 int machines__create_kernel_maps(struct machines *machines, pid_t pid);
248 int machines__create_guest_kernel_maps(struct machines *machines);
249 void machines__destroy_kernel_maps(struct machines *machines);
250
251 size_t machine__fprintf_vmlinux_path(struct machine *machine, FILE *fp);
252
253 typedef int (*machine__dso_t)(struct dso *dso, struct machine *machine, void *priv);
254
255 int machine__for_each_dso(struct machine *machine, machine__dso_t fn,
256 void *priv);
257 int machine__for_each_thread(struct machine *machine,
258 int (*fn)(struct thread *thread, void *p),
259 void *priv);
260 int machines__for_each_thread(struct machines *machines,
261 int (*fn)(struct thread *thread, void *p),
262 void *priv);
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