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 #include "threads.h" 11 12 struct addr_location; 13 struct branch_stack; 14 struct dso; 15 struct dso_id; 16 struct evsel; 17 struct perf_sample; 18 struct symbol; 19 struct target; 20 struct thread; 21 union perf_event; 22 struct machines; 23 24 /* Native host kernel uses -1 as pid index in machine */ 25 #define HOST_KERNEL_ID (-1) 26 #define DEFAULT_GUEST_KERNEL_ID (0) 27 28 extern const char *ref_reloc_sym_names[]; 29 30 struct vdso_info; 31 32 struct machine { 33 struct rb_node rb_node; 34 pid_t pid; 35 u16 id_hdr_size; 36 bool comm_exec; 37 bool kptr_restrict_warned; 38 bool single_address_space; 39 char *root_dir; 40 char *mmap_name; 41 char *kallsyms_filename; 42 struct threads threads; 43 struct vdso_info *vdso_info; 44 struct perf_env *env; 45 struct dsos dsos; 46 struct maps *kmaps; 47 struct map *vmlinux_map; 48 u64 kernel_start; 49 struct { 50 u64 text_start; 51 u64 text_end; 52 } sched, lock, traceiter, trace; 53 /* 54 * The current parallelism level (number of threads that run on CPUs). 55 * This value can be less than 1, or larger than the total number 56 * of CPUs, if events are poorly ordered. 57 */ 58 int parallelism; 59 pid_t *current_tid; 60 size_t current_tid_sz; 61 union { /* Tool specific area */ 62 void *priv; 63 u64 db_id; 64 }; 65 struct machines *machines; 66 bool trampolines_mapped; 67 }; 68 69 /* 70 * The main kernel (vmlinux) map 71 */ 72 static inline 73 struct 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 */ 81 static inline 82 struct maps *machine__kernel_maps(struct machine *machine) 83 { 84 return machine->kmaps; 85 } 86 87 int machine__get_kernel_start(struct machine *machine); 88 89 static 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 96 static 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 } 102 103 u8 machine__addr_cpumode(struct machine *machine, u8 cpumode, u64 addr); 104 105 struct thread *machine__find_thread(struct machine *machine, pid_t pid, 106 pid_t tid); 107 struct thread *machine__idle_thread(struct machine *machine); 108 struct comm *machine__thread_exec_comm(struct machine *machine, 109 struct thread *thread); 110 111 int machine__process_comm_event(struct machine *machine, union perf_event *event, 112 struct perf_sample *sample); 113 int machine__process_exit_event(struct machine *machine, union perf_event *event, 114 struct perf_sample *sample); 115 int machine__process_fork_event(struct machine *machine, union perf_event *event, 116 struct perf_sample *sample); 117 int machine__process_lost_event(struct machine *machine, union perf_event *event, 118 struct perf_sample *sample); 119 int machine__process_lost_samples_event(struct machine *machine, union perf_event *event, 120 struct perf_sample *sample); 121 int machine__process_aux_event(struct machine *machine, 122 union perf_event *event); 123 int machine__process_itrace_start_event(struct machine *machine, 124 union perf_event *event); 125 int machine__process_aux_output_hw_id_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(struct machines *machines, pid_t pid); 164 struct machine *machines__findnew(struct machines *machines, pid_t pid); 165 struct machine *machines__find_guest(struct machines *machines, pid_t pid); 166 struct thread *machines__findnew_guest_code(struct machines *machines, pid_t pid); 167 struct thread *machine__findnew_guest_code(struct machine *machine, pid_t pid); 168 169 void machines__set_id_hdr_size(struct machines *machines, u16 id_hdr_size); 170 void machines__set_comm_exec(struct machines *machines, bool comm_exec); 171 172 struct machine *machine__new_host(void); 173 struct machine *machine__new_kallsyms(void); 174 struct machine *machine__new_live(bool kernel_maps, pid_t pid); 175 int machine__init(struct machine *machine, const char *root_dir, pid_t pid); 176 void machine__exit(struct machine *machine); 177 void machine__delete_threads(struct machine *machine); 178 void machine__delete(struct machine *machine); 179 void machine__remove_thread(struct machine *machine, struct thread *th); 180 181 struct branch_info *sample__resolve_bstack(struct perf_sample *sample, 182 struct addr_location *al); 183 struct mem_info *sample__resolve_mem(struct perf_sample *sample, 184 struct addr_location *al); 185 186 struct callchain_cursor; 187 188 int __thread__resolve_callchain(struct thread *thread, 189 struct callchain_cursor *cursor, 190 struct evsel *evsel, 191 struct perf_sample *sample, 192 struct symbol **parent, 193 struct addr_location *root_al, 194 int max_stack, 195 bool symbols); 196 197 static inline int thread__resolve_callchain(struct thread *thread, 198 struct callchain_cursor *cursor, 199 struct evsel *evsel, 200 struct perf_sample *sample, 201 struct symbol **parent, 202 struct addr_location *root_al, 203 int max_stack) 204 { 205 return __thread__resolve_callchain(thread, 206 cursor, 207 evsel, 208 sample, 209 parent, 210 root_al, 211 max_stack, 212 /*symbols=*/true); 213 } 214 215 /* 216 * Default guest kernel is defined by parameter --guestkallsyms 217 * and --guestmodules 218 */ 219 static inline bool machine__is_default_guest(struct machine *machine) 220 { 221 return machine ? machine->pid == DEFAULT_GUEST_KERNEL_ID : false; 222 } 223 224 static inline bool machine__is_host(struct machine *machine) 225 { 226 return machine ? machine->pid == HOST_KERNEL_ID : false; 227 } 228 229 bool machine__is_lock_function(struct machine *machine, u64 addr); 230 bool machine__is(struct machine *machine, const char *arch); 231 bool machine__normalized_is(struct machine *machine, const char *arch); 232 int machine__nr_cpus_avail(struct machine *machine); 233 234 struct thread *machine__findnew_thread(struct machine *machine, pid_t pid, pid_t tid); 235 236 struct dso *machine__findnew_dso_id(struct machine *machine, const char *filename, 237 const struct dso_id *id); 238 struct dso *machine__findnew_dso(struct machine *machine, const char *filename); 239 240 size_t machine__fprintf(struct machine *machine, FILE *fp); 241 242 static inline 243 struct symbol *machine__find_kernel_symbol(struct machine *machine, u64 addr, 244 struct map **mapp) 245 { 246 return maps__find_symbol(machine->kmaps, addr, mapp); 247 } 248 249 static inline 250 struct symbol *machine__find_kernel_symbol_by_name(struct machine *machine, 251 const char *name, 252 struct map **mapp) 253 { 254 return maps__find_symbol_by_name(machine->kmaps, name, mapp); 255 } 256 257 int arch__fix_module_text_start(u64 *start, u64 *size, const char *name); 258 259 int machine__load_kallsyms(struct machine *machine, const char *filename); 260 261 int machine__load_vmlinux_path(struct machine *machine); 262 263 size_t machine__fprintf_dsos_buildid(struct machine *machine, FILE *fp, 264 bool (skip)(struct dso *dso, int parm), int parm); 265 size_t machines__fprintf_dsos(struct machines *machines, FILE *fp); 266 size_t machines__fprintf_dsos_buildid(struct machines *machines, FILE *fp, 267 bool (skip)(struct dso *dso, int parm), int parm); 268 269 void machine__destroy_kernel_maps(struct machine *machine); 270 int machine__create_kernel_maps(struct machine *machine); 271 272 int machines__create_kernel_maps(struct machines *machines, pid_t pid); 273 int machines__create_guest_kernel_maps(struct machines *machines); 274 void machines__destroy_kernel_maps(struct machines *machines); 275 276 typedef int (*machine__dso_t)(struct dso *dso, struct machine *machine, void *priv); 277 278 int machine__for_each_dso(struct machine *machine, machine__dso_t fn, 279 void *priv); 280 281 typedef int (*machine__map_t)(struct map *map, void *priv); 282 int machine__for_each_kernel_map(struct machine *machine, machine__map_t fn, 283 void *priv); 284 285 int machine__for_each_thread(struct machine *machine, 286 int (*fn)(struct thread *thread, void *p), 287 void *priv); 288 int machines__for_each_thread(struct machines *machines, 289 int (*fn)(struct thread *thread, void *p), 290 void *priv); 291 292 struct thread_list { 293 struct list_head list; 294 struct thread *thread; 295 }; 296 297 /* Make a list of struct thread_list based on threads in the machine. */ 298 int machine__thread_list(struct machine *machine, struct list_head *list); 299 /* Free up the nodes within the thread_list list. */ 300 void thread_list__delete(struct list_head *list); 301 302 pid_t machine__get_current_tid(struct machine *machine, int cpu); 303 int machine__set_current_tid(struct machine *machine, int cpu, pid_t pid, 304 pid_t tid); 305 /* 306 * For use with libtraceevent's tep_set_function_resolver() 307 */ 308 char *machine__resolve_kernel_addr(void *vmachine, unsigned long long *addrp, char **modp); 309 310 void machine__get_kallsyms_filename(struct machine *machine, char *buf, 311 size_t bufsz); 312 313 int machine__create_extra_kernel_maps(struct machine *machine, 314 struct dso *kernel); 315 316 /* Kernel-space maps for symbols that are outside the main kernel map and module maps */ 317 struct extra_kernel_map { 318 u64 start; 319 u64 end; 320 u64 pgoff; 321 char name[KMAP_NAME_LEN]; 322 }; 323 324 int machine__create_extra_kernel_map(struct machine *machine, 325 struct dso *kernel, 326 struct extra_kernel_map *xm); 327 328 int machine__map_x86_64_entry_trampolines(struct machine *machine, 329 struct dso *kernel); 330 331 int machine__resolve(struct machine *machine, struct addr_location *al, 332 struct perf_sample *sample); 333 334 int machine__hit_all_dsos(struct machine *machine); 335 336 #endif /* __PERF_MACHINE_H */ 337