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