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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
11struct addr_location;
12struct branch_stack;
13struct dso;
14struct dso_id;
15struct evsel;
16struct perf_sample;
17struct symbol;
18struct target;
19struct thread;
20union 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
26extern const char *ref_reloc_sym_names[];
27
28struct vdso_info;
29
30#define THREADS__TABLE_BITS 8
31#define THREADS__TABLE_SIZE (1 << THREADS__TABLE_BITS)
32
33struct 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
41struct 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
65static 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 */
74static inline
75struct 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 */
83static inline
84struct maps *machine__kernel_maps(struct machine *machine)
85{
86 return &machine->kmaps;
87}
88
89int machine__get_kernel_start(struct machine *machine);
90
91static 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
98static 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
105u8 machine__addr_cpumode(struct machine *machine, u8 cpumode, u64 addr);
106
107struct thread *machine__find_thread(struct machine *machine, pid_t pid,
108 pid_t tid);
109struct thread *machine__idle_thread(struct machine *machine);
110struct comm *machine__thread_exec_comm(struct machine *machine,
111 struct thread *thread);
112
113int machine__process_comm_event(struct machine *machine, union perf_event *event,
114 struct perf_sample *sample);
115int machine__process_exit_event(struct machine *machine, union perf_event *event,
116 struct perf_sample *sample);
117int machine__process_fork_event(struct machine *machine, union perf_event *event,
118 struct perf_sample *sample);
119int machine__process_lost_event(struct machine *machine, union perf_event *event,
120 struct perf_sample *sample);
121int machine__process_lost_samples_event(struct machine *machine, union perf_event *event,
122 struct perf_sample *sample);
123int machine__process_aux_event(struct machine *machine,
124 union perf_event *event);
125int machine__process_itrace_start_event(struct machine *machine,
126 union perf_event *event);
127int machine__process_switch_event(struct machine *machine,
128 union perf_event *event);
129int machine__process_namespaces_event(struct machine *machine,
130 union perf_event *event,
131 struct perf_sample *sample);
132int machine__process_cgroup_event(struct machine *machine,
133 union perf_event *event,
134 struct perf_sample *sample);
135int machine__process_mmap_event(struct machine *machine, union perf_event *event,
136 struct perf_sample *sample);
137int machine__process_mmap2_event(struct machine *machine, union perf_event *event,
138 struct perf_sample *sample);
139int machine__process_ksymbol(struct machine *machine,
140 union perf_event *event,
141 struct perf_sample *sample);
142int machine__process_text_poke(struct machine *machine,
143 union perf_event *event,
144 struct perf_sample *sample);
145int machine__process_event(struct machine *machine, union perf_event *event,
146 struct perf_sample *sample);
147
148typedef void (*machine__process_t)(struct machine *machine, void *data);
149
150struct machines {
151 struct machine host;
152 struct rb_root_cached guests;
153};
154
155void machines__init(struct machines *machines);
156void machines__exit(struct machines *machines);
157
158void machines__process_guests(struct machines *machines,
159 machine__process_t process, void *data);
160
161struct machine *machines__add(struct machines *machines, pid_t pid,
162 const char *root_dir);
163struct machine *machines__find_host(struct machines *machines);
164struct machine *machines__find(struct machines *machines, pid_t pid);
165struct machine *machines__findnew(struct machines *machines, pid_t pid);
166struct machine *machines__find_guest(struct machines *machines, pid_t pid);
167
168void machines__set_id_hdr_size(struct machines *machines, u16 id_hdr_size);
169void machines__set_comm_exec(struct machines *machines, bool comm_exec);
170
171struct machine *machine__new_host(void);
172struct machine *machine__new_kallsyms(void);
173int machine__init(struct machine *machine, const char *root_dir, pid_t pid);
174void machine__exit(struct machine *machine);
175void machine__delete_threads(struct machine *machine);
176void machine__delete(struct machine *machine);
177void machine__remove_thread(struct machine *machine, struct thread *th);
178
179struct branch_info *sample__resolve_bstack(struct perf_sample *sample,
180 struct addr_location *al);
181struct mem_info *sample__resolve_mem(struct perf_sample *sample,
182 struct addr_location *al);
183
184struct callchain_cursor;
185
186int 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 */
198static inline bool machine__is_default_guest(struct machine *machine)
199{
200 return machine ? machine->pid == DEFAULT_GUEST_KERNEL_ID : false;
201}
202
203static inline bool machine__is_host(struct machine *machine)
204{
205 return machine ? machine->pid == HOST_KERNEL_ID : false;
206}
207
208bool machine__is(struct machine *machine, const char *arch);
209int machine__nr_cpus_avail(struct machine *machine);
210
211struct thread *__machine__findnew_thread(struct machine *machine, pid_t pid, pid_t tid);
212struct thread *machine__findnew_thread(struct machine *machine, pid_t pid, pid_t tid);
213
214struct dso *machine__findnew_dso_id(struct machine *machine, const char *filename, struct dso_id *id);
215struct dso *machine__findnew_dso(struct machine *machine, const char *filename);
216
217size_t machine__fprintf(struct machine *machine, FILE *fp);
218
219static inline
220struct 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
226static inline
227struct 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
234int arch__fix_module_text_start(u64 *start, u64 *size, const char *name);
235
236int machine__load_kallsyms(struct machine *machine, const char *filename);
237
238int machine__load_vmlinux_path(struct machine *machine);
239
240size_t machine__fprintf_dsos_buildid(struct machine *machine, FILE *fp,
241 bool (skip)(struct dso *dso, int parm), int parm);
242size_t machines__fprintf_dsos(struct machines *machines, FILE *fp);
243size_t machines__fprintf_dsos_buildid(struct machines *machines, FILE *fp,
244 bool (skip)(struct dso *dso, int parm), int parm);
245
246void machine__destroy_kernel_maps(struct machine *machine);
247int machine__create_kernel_maps(struct machine *machine);
248
249int machines__create_kernel_maps(struct machines *machines, pid_t pid);
250int machines__create_guest_kernel_maps(struct machines *machines);
251void machines__destroy_kernel_maps(struct machines *machines);
252
253size_t machine__fprintf_vmlinux_path(struct machine *machine, FILE *fp);
254
255typedef int (*machine__dso_t)(struct dso *dso, struct machine *machine, void *priv);
256
257int machine__for_each_dso(struct machine *machine, machine__dso_t fn,
258 void *priv);
259int machine__for_each_thread(struct machine *machine,
260 int (*fn)(struct thread *thread, void *p),
261 void *priv);
262int machines__for_each_thread(struct machines *machines,
263 int (*fn)(struct thread *thread, void *p),
264 void *priv);
265
266pid_t machine__get_current_tid(struct machine *machine, int cpu);
267int 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 */
272char *machine__resolve_kernel_addr(void *vmachine, unsigned long long *addrp, char **modp);
273
274void machine__get_kallsyms_filename(struct machine *machine, char *buf,
275 size_t bufsz);
276
277int 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 */
281struct extra_kernel_map {
282 u64 start;
283 u64 end;
284 u64 pgoff;
285 char name[KMAP_NAME_LEN];
286};
287
288int machine__create_extra_kernel_map(struct machine *machine,
289 struct dso *kernel,
290 struct extra_kernel_map *xm);
291
292int machine__map_x86_64_entry_trampolines(struct machine *machine,
293 struct dso *kernel);
294
295#endif /* __PERF_MACHINE_H */