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 thread *last_match; 39 }; 40 41 struct 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 72 static 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 */ 81 static inline 82 struct 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 */ 90 static inline 91 struct maps *machine__kernel_maps(struct machine *machine) 92 { 93 return machine->kmaps; 94 } 95 96 int machine__get_kernel_start(struct machine *machine); 97 98 static 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 } 104 105 static 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 } 111 112 u8 machine__addr_cpumode(struct machine *machine, u8 cpumode, u64 addr); 113 114 struct thread *machine__find_thread(struct machine *machine, pid_t pid, 115 pid_t tid); 116 struct thread *machine__idle_thread(struct machine *machine); 117 struct comm *machine__thread_exec_comm(struct machine *machine, 118 struct thread *thread); 119 120 int machine__process_comm_event(struct machine *machine, union perf_event *event, 121 struct perf_sample *sample); 122 int machine__process_exit_event(struct machine *machine, union perf_event *event, 123 struct perf_sample *sample); 124 int machine__process_fork_event(struct machine *machine, union perf_event *event, 125 struct perf_sample *sample); 126 int machine__process_lost_event(struct machine *machine, union perf_event *event, 127 struct perf_sample *sample); 128 int machine__process_lost_samples_event(struct machine *machine, union perf_event *event, 129 struct perf_sample *sample); 130 int machine__process_aux_event(struct machine *machine, 131 union perf_event *event); 132 int machine__process_itrace_start_event(struct machine *machine, 133 union perf_event *event); 134 int machine__process_aux_output_hw_id_event(struct machine *machine, 135 union perf_event *event); 136 int machine__process_switch_event(struct machine *machine, 137 union perf_event *event); 138 int machine__process_namespaces_event(struct machine *machine, 139 union perf_event *event, 140 struct perf_sample *sample); 141 int machine__process_cgroup_event(struct machine *machine, 142 union perf_event *event, 143 struct perf_sample *sample); 144 int machine__process_mmap_event(struct machine *machine, union perf_event *event, 145 struct perf_sample *sample); 146 int machine__process_mmap2_event(struct machine *machine, union perf_event *event, 147 struct perf_sample *sample); 148 int machine__process_ksymbol(struct machine *machine, 149 union perf_event *event, 150 struct perf_sample *sample); 151 int machine__process_text_poke(struct machine *machine, 152 union perf_event *event, 153 struct perf_sample *sample); 154 int machine__process_event(struct machine *machine, union perf_event *event, 155 struct perf_sample *sample); 156 157 typedef void (*machine__process_t)(struct machine *machine, void *data); 158 159 struct machines { 160 struct machine host; 161 struct rb_root_cached guests; 162 }; 163 164 void machines__init(struct machines *machines); 165 void machines__exit(struct machines *machines); 166 167 void machines__process_guests(struct machines *machines, 168 machine__process_t process, void *data); 169 170 struct machine *machines__add(struct machines *machines, pid_t pid, 171 const char *root_dir); 172 struct machine *machines__find(struct machines *machines, pid_t pid); 173 struct machine *machines__findnew(struct machines *machines, pid_t pid); 174 struct machine *machines__find_guest(struct machines *machines, pid_t pid); 175 struct thread *machines__findnew_guest_code(struct machines *machines, pid_t pid); 176 struct thread *machine__findnew_guest_code(struct machine *machine, pid_t pid); 177 178 void machines__set_id_hdr_size(struct machines *machines, u16 id_hdr_size); 179 void machines__set_comm_exec(struct machines *machines, bool comm_exec); 180 181 struct machine *machine__new_host(void); 182 struct machine *machine__new_kallsyms(void); 183 int machine__init(struct machine *machine, const char *root_dir, pid_t pid); 184 void machine__exit(struct machine *machine); 185 void machine__delete_threads(struct machine *machine); 186 void machine__delete(struct machine *machine); 187 void machine__remove_thread(struct machine *machine, struct thread *th); 188 189 struct branch_info *sample__resolve_bstack(struct perf_sample *sample, 190 struct addr_location *al); 191 struct mem_info *sample__resolve_mem(struct perf_sample *sample, 192 struct addr_location *al); 193 194 struct callchain_cursor; 195 196 int 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 */ 208 static inline bool machine__is_default_guest(struct machine *machine) 209 { 210 return machine ? machine->pid == DEFAULT_GUEST_KERNEL_ID : false; 211 } 212 213 static inline bool machine__is_host(struct machine *machine) 214 { 215 return machine ? machine->pid == HOST_KERNEL_ID : false; 216 } 217 218 bool machine__is_lock_function(struct machine *machine, u64 addr); 219 bool machine__is(struct machine *machine, const char *arch); 220 bool machine__normalized_is(struct machine *machine, const char *arch); 221 int machine__nr_cpus_avail(struct machine *machine); 222 223 struct thread *__machine__findnew_thread(struct machine *machine, pid_t pid, pid_t tid); 224 struct thread *machine__findnew_thread(struct machine *machine, pid_t pid, pid_t tid); 225 226 struct dso *machine__findnew_dso_id(struct machine *machine, const char *filename, struct dso_id *id); 227 struct dso *machine__findnew_dso(struct machine *machine, const char *filename); 228 229 size_t machine__fprintf(struct machine *machine, FILE *fp); 230 231 static inline 232 struct 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 } 237 238 static inline 239 struct 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 } 245 246 int arch__fix_module_text_start(u64 *start, u64 *size, const char *name); 247 248 int machine__load_kallsyms(struct machine *machine, const char *filename); 249 250 int machine__load_vmlinux_path(struct machine *machine); 251 252 size_t machine__fprintf_dsos_buildid(struct machine *machine, FILE *fp, 253 bool (skip)(struct dso *dso, int parm), int parm); 254 size_t machines__fprintf_dsos(struct machines *machines, FILE *fp); 255 size_t machines__fprintf_dsos_buildid(struct machines *machines, FILE *fp, 256 bool (skip)(struct dso *dso, int parm), int parm); 257 258 void machine__destroy_kernel_maps(struct machine *machine); 259 int machine__create_kernel_maps(struct machine *machine); 260 261 int machines__create_kernel_maps(struct machines *machines, pid_t pid); 262 int machines__create_guest_kernel_maps(struct machines *machines); 263 void machines__destroy_kernel_maps(struct machines *machines); 264 265 size_t machine__fprintf_vmlinux_path(struct machine *machine, FILE *fp); 266 267 typedef int (*machine__dso_t)(struct dso *dso, struct machine *machine, void *priv); 268 269 int machine__for_each_dso(struct machine *machine, machine__dso_t fn, 270 void *priv); 271 272 typedef int (*machine__map_t)(struct map *map, void *priv); 273 int machine__for_each_kernel_map(struct machine *machine, machine__map_t fn, 274 void *priv); 275 276 int machine__for_each_thread(struct machine *machine, 277 int (*fn)(struct thread *thread, void *p), 278 void *priv); 279 int machines__for_each_thread(struct machines *machines, 280 int (*fn)(struct thread *thread, void *p), 281 void *priv); 282 283 pid_t machine__get_current_tid(struct machine *machine, int cpu); 284 int 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 */ 289 char *machine__resolve_kernel_addr(void *vmachine, unsigned long long *addrp, char **modp); 290 291 void machine__get_kallsyms_filename(struct machine *machine, char *buf, 292 size_t bufsz); 293 294 int 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 */ 298 struct extra_kernel_map { 299 u64 start; 300 u64 end; 301 u64 pgoff; 302 char name[KMAP_NAME_LEN]; 303 }; 304 305 int machine__create_extra_kernel_map(struct machine *machine, 306 struct dso *kernel, 307 struct extra_kernel_map *xm); 308 309 int machine__map_x86_64_entry_trampolines(struct machine *machine, 310 struct dso *kernel); 311 312 int machine__resolve(struct machine *machine, struct addr_location *al, 313 struct perf_sample *sample); 314 315 #endif /* __PERF_MACHINE_H */ 316