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 struct 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 27 extern const char *ref_reloc_sym_names[]; 28 29 struct vdso_info; 30 31 #define THREADS__TABLE_BITS 8 32 #define THREADS__TABLE_SIZE (1 << THREADS__TABLE_BITS) 33 34 struct threads { 35 struct rb_root_cached entries; 36 struct rw_semaphore lock; 37 unsigned int nr; 38 struct list_head dead; 39 struct thread *last_match; 40 }; 41 42 struct machine { 43 struct rb_node rb_node; 44 pid_t pid; 45 u16 id_hdr_size; 46 bool comm_exec; 47 bool kptr_restrict_warned; 48 bool single_address_space; 49 char *root_dir; 50 char *mmap_name; 51 char *kallsyms_filename; 52 struct threads threads[THREADS__TABLE_SIZE]; 53 struct vdso_info *vdso_info; 54 struct perf_env *env; 55 struct dsos dsos; 56 struct maps *kmaps; 57 struct map *vmlinux_map; 58 u64 kernel_start; 59 struct { 60 u64 text_start; 61 u64 text_end; 62 } sched, lock; 63 pid_t *current_tid; 64 size_t current_tid_sz; 65 union { /* Tool specific area */ 66 void *priv; 67 u64 db_id; 68 }; 69 struct machines *machines; 70 bool trampolines_mapped; 71 }; 72 73 static inline struct threads *machine__threads(struct machine *machine, pid_t tid) 74 { 75 /* Cast it to handle tid == -1 */ 76 return &machine->threads[(unsigned int)tid % THREADS__TABLE_SIZE]; 77 } 78 79 /* 80 * The main kernel (vmlinux) map 81 */ 82 static inline 83 struct map *machine__kernel_map(struct machine *machine) 84 { 85 return machine->vmlinux_map; 86 } 87 88 /* 89 * kernel (the one returned by machine__kernel_map()) plus kernel modules maps 90 */ 91 static inline 92 struct maps *machine__kernel_maps(struct machine *machine) 93 { 94 return machine->kmaps; 95 } 96 97 int machine__get_kernel_start(struct machine *machine); 98 99 static inline u64 machine__kernel_start(struct machine *machine) 100 { 101 if (!machine->kernel_start) 102 machine__get_kernel_start(machine); 103 return machine->kernel_start; 104 } 105 106 static inline bool machine__kernel_ip(struct machine *machine, u64 ip) 107 { 108 u64 kernel_start = machine__kernel_start(machine); 109 110 return ip >= kernel_start; 111 } 112 113 u8 machine__addr_cpumode(struct machine *machine, u8 cpumode, u64 addr); 114 115 struct thread *machine__find_thread(struct machine *machine, pid_t pid, 116 pid_t tid); 117 struct thread *machine__idle_thread(struct machine *machine); 118 struct comm *machine__thread_exec_comm(struct machine *machine, 119 struct thread *thread); 120 121 int machine__process_comm_event(struct machine *machine, union perf_event *event, 122 struct perf_sample *sample); 123 int machine__process_exit_event(struct machine *machine, union perf_event *event, 124 struct perf_sample *sample); 125 int machine__process_fork_event(struct machine *machine, union perf_event *event, 126 struct perf_sample *sample); 127 int machine__process_lost_event(struct machine *machine, union perf_event *event, 128 struct perf_sample *sample); 129 int machine__process_lost_samples_event(struct machine *machine, union perf_event *event, 130 struct perf_sample *sample); 131 int machine__process_aux_event(struct machine *machine, 132 union perf_event *event); 133 int machine__process_itrace_start_event(struct machine *machine, 134 union perf_event *event); 135 int machine__process_aux_output_hw_id_event(struct machine *machine, 136 union perf_event *event); 137 int machine__process_switch_event(struct machine *machine, 138 union perf_event *event); 139 int machine__process_namespaces_event(struct machine *machine, 140 union perf_event *event, 141 struct perf_sample *sample); 142 int machine__process_cgroup_event(struct machine *machine, 143 union perf_event *event, 144 struct perf_sample *sample); 145 int machine__process_mmap_event(struct machine *machine, union perf_event *event, 146 struct perf_sample *sample); 147 int machine__process_mmap2_event(struct machine *machine, union perf_event *event, 148 struct perf_sample *sample); 149 int machine__process_ksymbol(struct machine *machine, 150 union perf_event *event, 151 struct perf_sample *sample); 152 int machine__process_text_poke(struct machine *machine, 153 union perf_event *event, 154 struct perf_sample *sample); 155 int machine__process_event(struct machine *machine, union perf_event *event, 156 struct perf_sample *sample); 157 158 typedef void (*machine__process_t)(struct machine *machine, void *data); 159 160 struct machines { 161 struct machine host; 162 struct rb_root_cached guests; 163 }; 164 165 void machines__init(struct machines *machines); 166 void machines__exit(struct machines *machines); 167 168 void machines__process_guests(struct machines *machines, 169 machine__process_t process, void *data); 170 171 struct machine *machines__add(struct machines *machines, pid_t pid, 172 const char *root_dir); 173 struct machine *machines__find(struct machines *machines, pid_t pid); 174 struct machine *machines__findnew(struct machines *machines, pid_t pid); 175 struct machine *machines__find_guest(struct machines *machines, pid_t pid); 176 struct thread *machines__findnew_guest_code(struct machines *machines, pid_t pid); 177 struct thread *machine__findnew_guest_code(struct machine *machine, pid_t pid); 178 179 void machines__set_id_hdr_size(struct machines *machines, u16 id_hdr_size); 180 void machines__set_comm_exec(struct machines *machines, bool comm_exec); 181 182 struct machine *machine__new_host(void); 183 struct machine *machine__new_kallsyms(void); 184 int machine__init(struct machine *machine, const char *root_dir, pid_t pid); 185 void machine__exit(struct machine *machine); 186 void machine__delete_threads(struct machine *machine); 187 void machine__delete(struct machine *machine); 188 void machine__remove_thread(struct machine *machine, struct thread *th); 189 190 struct branch_info *sample__resolve_bstack(struct perf_sample *sample, 191 struct addr_location *al); 192 struct mem_info *sample__resolve_mem(struct perf_sample *sample, 193 struct addr_location *al); 194 195 struct callchain_cursor; 196 197 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 /* 206 * Default guest kernel is defined by parameter --guestkallsyms 207 * and --guestmodules 208 */ 209 static inline bool machine__is_default_guest(struct machine *machine) 210 { 211 return machine ? machine->pid == DEFAULT_GUEST_KERNEL_ID : false; 212 } 213 214 static inline bool machine__is_host(struct machine *machine) 215 { 216 return machine ? machine->pid == HOST_KERNEL_ID : false; 217 } 218 219 bool machine__is_lock_function(struct machine *machine, u64 addr); 220 bool machine__is(struct machine *machine, const char *arch); 221 bool machine__normalized_is(struct machine *machine, const char *arch); 222 int machine__nr_cpus_avail(struct machine *machine); 223 224 struct thread *__machine__findnew_thread(struct machine *machine, pid_t pid, pid_t tid); 225 struct thread *machine__findnew_thread(struct machine *machine, pid_t pid, pid_t tid); 226 227 struct dso *machine__findnew_dso_id(struct machine *machine, const char *filename, struct dso_id *id); 228 struct dso *machine__findnew_dso(struct machine *machine, const char *filename); 229 230 size_t machine__fprintf(struct machine *machine, FILE *fp); 231 232 static inline 233 struct symbol *machine__find_kernel_symbol(struct machine *machine, u64 addr, 234 struct map **mapp) 235 { 236 return maps__find_symbol(machine->kmaps, addr, mapp); 237 } 238 239 static inline 240 struct symbol *machine__find_kernel_symbol_by_name(struct machine *machine, 241 const char *name, 242 struct map **mapp) 243 { 244 return maps__find_symbol_by_name(machine->kmaps, name, mapp); 245 } 246 247 int arch__fix_module_text_start(u64 *start, u64 *size, const char *name); 248 249 int machine__load_kallsyms(struct machine *machine, const char *filename); 250 251 int machine__load_vmlinux_path(struct machine *machine); 252 253 size_t machine__fprintf_dsos_buildid(struct machine *machine, FILE *fp, 254 bool (skip)(struct dso *dso, int parm), int parm); 255 size_t machines__fprintf_dsos(struct machines *machines, FILE *fp); 256 size_t machines__fprintf_dsos_buildid(struct machines *machines, FILE *fp, 257 bool (skip)(struct dso *dso, int parm), int parm); 258 259 void machine__destroy_kernel_maps(struct machine *machine); 260 int machine__create_kernel_maps(struct machine *machine); 261 262 int machines__create_kernel_maps(struct machines *machines, pid_t pid); 263 int machines__create_guest_kernel_maps(struct machines *machines); 264 void machines__destroy_kernel_maps(struct machines *machines); 265 266 size_t machine__fprintf_vmlinux_path(struct machine *machine, FILE *fp); 267 268 typedef int (*machine__dso_t)(struct dso *dso, struct machine *machine, void *priv); 269 270 int machine__for_each_dso(struct machine *machine, machine__dso_t fn, 271 void *priv); 272 273 typedef int (*machine__map_t)(struct map *map, void *priv); 274 int machine__for_each_kernel_map(struct machine *machine, machine__map_t fn, 275 void *priv); 276 277 int machine__for_each_thread(struct machine *machine, 278 int (*fn)(struct thread *thread, void *p), 279 void *priv); 280 int machines__for_each_thread(struct machines *machines, 281 int (*fn)(struct thread *thread, void *p), 282 void *priv); 283 284 pid_t machine__get_current_tid(struct machine *machine, int cpu); 285 int machine__set_current_tid(struct machine *machine, int cpu, pid_t pid, 286 pid_t tid); 287 /* 288 * For use with libtraceevent's tep_set_function_resolver() 289 */ 290 char *machine__resolve_kernel_addr(void *vmachine, unsigned long long *addrp, char **modp); 291 292 void machine__get_kallsyms_filename(struct machine *machine, char *buf, 293 size_t bufsz); 294 295 int machine__create_extra_kernel_maps(struct machine *machine, 296 struct dso *kernel); 297 298 /* Kernel-space maps for symbols that are outside the main kernel map and module maps */ 299 struct extra_kernel_map { 300 u64 start; 301 u64 end; 302 u64 pgoff; 303 char name[KMAP_NAME_LEN]; 304 }; 305 306 int machine__create_extra_kernel_map(struct machine *machine, 307 struct dso *kernel, 308 struct extra_kernel_map *xm); 309 310 int machine__map_x86_64_entry_trampolines(struct machine *machine, 311 struct dso *kernel); 312 313 int machine__resolve(struct machine *machine, struct addr_location *al, 314 struct perf_sample *sample); 315 316 #endif /* __PERF_MACHINE_H */ 317