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