Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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;
21struct machines;
22
23/* Native host kernel uses -1 as pid index in machine */
24#define HOST_KERNEL_ID (-1)
25#define DEFAULT_GUEST_KERNEL_ID (0)
26
27extern const char *ref_reloc_sym_names[];
28
29struct vdso_info;
30
31#define THREADS__TABLE_BITS 8
32#define THREADS__TABLE_SIZE (1 << THREADS__TABLE_BITS)
33
34struct threads {
35 struct rb_root_cached entries;
36 struct rw_semaphore lock;
37 unsigned int nr;
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 char *kallsyms_filename;
51 struct threads threads[THREADS__TABLE_SIZE];
52 struct vdso_info *vdso_info;
53 struct perf_env *env;
54 struct dsos dsos;
55 struct maps *kmaps;
56 struct map *vmlinux_map;
57 u64 kernel_start;
58 struct {
59 u64 text_start;
60 u64 text_end;
61 } sched, lock;
62 pid_t *current_tid;
63 size_t current_tid_sz;
64 union { /* Tool specific area */
65 void *priv;
66 u64 db_id;
67 };
68 struct machines *machines;
69 bool trampolines_mapped;
70};
71
72static inline struct threads *machine__threads(struct machine *machine, pid_t tid)
73{
74 /* Cast it to handle tid == -1 */
75 return &machine->threads[(unsigned int)tid % THREADS__TABLE_SIZE];
76}
77
78/*
79 * The main kernel (vmlinux) map
80 */
81static inline
82struct map *machine__kernel_map(struct machine *machine)
83{
84 return machine->vmlinux_map;
85}
86
87/*
88 * kernel (the one returned by machine__kernel_map()) plus kernel modules maps
89 */
90static inline
91struct maps *machine__kernel_maps(struct machine *machine)
92{
93 return machine->kmaps;
94}
95
96int machine__get_kernel_start(struct machine *machine);
97
98static inline u64 machine__kernel_start(struct machine *machine)
99{
100 if (!machine->kernel_start)
101 machine__get_kernel_start(machine);
102 return machine->kernel_start;
103}
104
105static inline bool machine__kernel_ip(struct machine *machine, u64 ip)
106{
107 u64 kernel_start = machine__kernel_start(machine);
108
109 return ip >= kernel_start;
110}
111
112u8 machine__addr_cpumode(struct machine *machine, u8 cpumode, u64 addr);
113
114struct thread *machine__find_thread(struct machine *machine, pid_t pid,
115 pid_t tid);
116struct thread *machine__idle_thread(struct machine *machine);
117struct comm *machine__thread_exec_comm(struct machine *machine,
118 struct thread *thread);
119
120int machine__process_comm_event(struct machine *machine, union perf_event *event,
121 struct perf_sample *sample);
122int machine__process_exit_event(struct machine *machine, union perf_event *event,
123 struct perf_sample *sample);
124int machine__process_fork_event(struct machine *machine, union perf_event *event,
125 struct perf_sample *sample);
126int machine__process_lost_event(struct machine *machine, union perf_event *event,
127 struct perf_sample *sample);
128int machine__process_lost_samples_event(struct machine *machine, union perf_event *event,
129 struct perf_sample *sample);
130int machine__process_aux_event(struct machine *machine,
131 union perf_event *event);
132int machine__process_itrace_start_event(struct machine *machine,
133 union perf_event *event);
134int machine__process_aux_output_hw_id_event(struct machine *machine,
135 union perf_event *event);
136int machine__process_switch_event(struct machine *machine,
137 union perf_event *event);
138int machine__process_namespaces_event(struct machine *machine,
139 union perf_event *event,
140 struct perf_sample *sample);
141int machine__process_cgroup_event(struct machine *machine,
142 union perf_event *event,
143 struct perf_sample *sample);
144int machine__process_mmap_event(struct machine *machine, union perf_event *event,
145 struct perf_sample *sample);
146int machine__process_mmap2_event(struct machine *machine, union perf_event *event,
147 struct perf_sample *sample);
148int machine__process_ksymbol(struct machine *machine,
149 union perf_event *event,
150 struct perf_sample *sample);
151int machine__process_text_poke(struct machine *machine,
152 union perf_event *event,
153 struct perf_sample *sample);
154int machine__process_event(struct machine *machine, union perf_event *event,
155 struct perf_sample *sample);
156
157typedef void (*machine__process_t)(struct machine *machine, void *data);
158
159struct machines {
160 struct machine host;
161 struct rb_root_cached guests;
162};
163
164void machines__init(struct machines *machines);
165void machines__exit(struct machines *machines);
166
167void machines__process_guests(struct machines *machines,
168 machine__process_t process, void *data);
169
170struct machine *machines__add(struct machines *machines, pid_t pid,
171 const char *root_dir);
172struct machine *machines__find(struct machines *machines, pid_t pid);
173struct machine *machines__findnew(struct machines *machines, pid_t pid);
174struct machine *machines__find_guest(struct machines *machines, pid_t pid);
175struct thread *machines__findnew_guest_code(struct machines *machines, pid_t pid);
176struct thread *machine__findnew_guest_code(struct machine *machine, pid_t pid);
177
178void machines__set_id_hdr_size(struct machines *machines, u16 id_hdr_size);
179void machines__set_comm_exec(struct machines *machines, bool comm_exec);
180
181struct machine *machine__new_host(void);
182struct machine *machine__new_kallsyms(void);
183int machine__init(struct machine *machine, const char *root_dir, pid_t pid);
184void machine__exit(struct machine *machine);
185void machine__delete_threads(struct machine *machine);
186void machine__delete(struct machine *machine);
187void machine__remove_thread(struct machine *machine, struct thread *th);
188
189struct branch_info *sample__resolve_bstack(struct perf_sample *sample,
190 struct addr_location *al);
191struct mem_info *sample__resolve_mem(struct perf_sample *sample,
192 struct addr_location *al);
193
194struct callchain_cursor;
195
196int thread__resolve_callchain(struct thread *thread,
197 struct callchain_cursor *cursor,
198 struct evsel *evsel,
199 struct perf_sample *sample,
200 struct symbol **parent,
201 struct addr_location *root_al,
202 int max_stack);
203
204/*
205 * Default guest kernel is defined by parameter --guestkallsyms
206 * and --guestmodules
207 */
208static inline bool machine__is_default_guest(struct machine *machine)
209{
210 return machine ? machine->pid == DEFAULT_GUEST_KERNEL_ID : false;
211}
212
213static inline bool machine__is_host(struct machine *machine)
214{
215 return machine ? machine->pid == HOST_KERNEL_ID : false;
216}
217
218bool machine__is_lock_function(struct machine *machine, u64 addr);
219bool machine__is(struct machine *machine, const char *arch);
220bool machine__normalized_is(struct machine *machine, const char *arch);
221int machine__nr_cpus_avail(struct machine *machine);
222
223struct thread *__machine__findnew_thread(struct machine *machine, pid_t pid, pid_t tid);
224struct thread *machine__findnew_thread(struct machine *machine, pid_t pid, pid_t tid);
225
226struct dso *machine__findnew_dso_id(struct machine *machine, const char *filename, struct dso_id *id);
227struct dso *machine__findnew_dso(struct machine *machine, const char *filename);
228
229size_t machine__fprintf(struct machine *machine, FILE *fp);
230
231static inline
232struct symbol *machine__find_kernel_symbol(struct machine *machine, u64 addr,
233 struct map **mapp)
234{
235 return maps__find_symbol(machine->kmaps, addr, mapp);
236}
237
238static inline
239struct symbol *machine__find_kernel_symbol_by_name(struct machine *machine,
240 const char *name,
241 struct map **mapp)
242{
243 return maps__find_symbol_by_name(machine->kmaps, name, mapp);
244}
245
246int arch__fix_module_text_start(u64 *start, u64 *size, const char *name);
247
248int machine__load_kallsyms(struct machine *machine, const char *filename);
249
250int machine__load_vmlinux_path(struct machine *machine);
251
252size_t machine__fprintf_dsos_buildid(struct machine *machine, FILE *fp,
253 bool (skip)(struct dso *dso, int parm), int parm);
254size_t machines__fprintf_dsos(struct machines *machines, FILE *fp);
255size_t machines__fprintf_dsos_buildid(struct machines *machines, FILE *fp,
256 bool (skip)(struct dso *dso, int parm), int parm);
257
258void machine__destroy_kernel_maps(struct machine *machine);
259int machine__create_kernel_maps(struct machine *machine);
260
261int machines__create_kernel_maps(struct machines *machines, pid_t pid);
262int machines__create_guest_kernel_maps(struct machines *machines);
263void machines__destroy_kernel_maps(struct machines *machines);
264
265size_t machine__fprintf_vmlinux_path(struct machine *machine, FILE *fp);
266
267typedef int (*machine__dso_t)(struct dso *dso, struct machine *machine, void *priv);
268
269int machine__for_each_dso(struct machine *machine, machine__dso_t fn,
270 void *priv);
271
272typedef int (*machine__map_t)(struct map *map, void *priv);
273int machine__for_each_kernel_map(struct machine *machine, machine__map_t fn,
274 void *priv);
275
276int machine__for_each_thread(struct machine *machine,
277 int (*fn)(struct thread *thread, void *p),
278 void *priv);
279int machines__for_each_thread(struct machines *machines,
280 int (*fn)(struct thread *thread, void *p),
281 void *priv);
282
283pid_t machine__get_current_tid(struct machine *machine, int cpu);
284int machine__set_current_tid(struct machine *machine, int cpu, pid_t pid,
285 pid_t tid);
286/*
287 * For use with libtraceevent's tep_set_function_resolver()
288 */
289char *machine__resolve_kernel_addr(void *vmachine, unsigned long long *addrp, char **modp);
290
291void machine__get_kallsyms_filename(struct machine *machine, char *buf,
292 size_t bufsz);
293
294int machine__create_extra_kernel_maps(struct machine *machine,
295 struct dso *kernel);
296
297/* Kernel-space maps for symbols that are outside the main kernel map and module maps */
298struct extra_kernel_map {
299 u64 start;
300 u64 end;
301 u64 pgoff;
302 char name[KMAP_NAME_LEN];
303};
304
305int machine__create_extra_kernel_map(struct machine *machine,
306 struct dso *kernel,
307 struct extra_kernel_map *xm);
308
309int machine__map_x86_64_entry_trampolines(struct machine *machine,
310 struct dso *kernel);
311
312int machine__resolve(struct machine *machine, struct addr_location *al,
313 struct perf_sample *sample);
314
315#endif /* __PERF_MACHINE_H */