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.h" 8 #include "dso.h" 9 #include "event.h" 10 #include "rwsem.h" 11 12 struct addr_location; 13 struct branch_stack; 14 struct perf_evsel; 15 struct perf_sample; 16 struct symbol; 17 struct thread; 18 union 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 24 extern const char *ref_reloc_sym_names[]; 25 26 struct vdso_info; 27 28 #define THREADS__TABLE_BITS 8 29 #define THREADS__TABLE_SIZE (1 << THREADS__TABLE_BITS) 30 31 struct threads { 32 struct rb_root entries; 33 struct rw_semaphore lock; 34 unsigned int nr; 35 struct list_head dead; 36 struct thread *last_match; 37 }; 38 39 struct 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 char *root_dir; 46 char *mmap_name; 47 struct threads threads[THREADS__TABLE_SIZE]; 48 struct vdso_info *vdso_info; 49 struct perf_env *env; 50 struct dsos dsos; 51 struct map_groups kmaps; 52 struct map *vmlinux_maps[MAP__NR_TYPES]; 53 u64 kernel_start; 54 pid_t *current_tid; 55 union { /* Tool specific area */ 56 void *priv; 57 u64 db_id; 58 }; 59 }; 60 61 static inline struct threads *machine__threads(struct machine *machine, pid_t tid) 62 { 63 /* Cast it to handle tid == -1 */ 64 return &machine->threads[(unsigned int)tid % THREADS__TABLE_SIZE]; 65 } 66 67 static inline 68 struct map *__machine__kernel_map(struct machine *machine, enum map_type type) 69 { 70 return machine->vmlinux_maps[type]; 71 } 72 73 /* 74 * The main kernel (vmlinux) map 75 */ 76 static inline 77 struct map *machine__kernel_map(struct machine *machine) 78 { 79 return __machine__kernel_map(machine, MAP__FUNCTION); 80 } 81 82 /* 83 * kernel (the one returned by machine__kernel_map()) plus kernel modules maps 84 */ 85 static inline 86 struct maps *machine__kernel_maps(struct machine *machine) 87 { 88 return &machine->kmaps.maps[MAP__FUNCTION]; 89 } 90 91 int machine__get_kernel_start(struct machine *machine); 92 93 static inline u64 machine__kernel_start(struct machine *machine) 94 { 95 if (!machine->kernel_start) 96 machine__get_kernel_start(machine); 97 return machine->kernel_start; 98 } 99 100 static inline bool machine__kernel_ip(struct machine *machine, u64 ip) 101 { 102 u64 kernel_start = machine__kernel_start(machine); 103 104 return ip >= kernel_start; 105 } 106 107 struct thread *machine__find_thread(struct machine *machine, pid_t pid, 108 pid_t tid); 109 struct comm *machine__thread_exec_comm(struct machine *machine, 110 struct thread *thread); 111 112 int machine__process_comm_event(struct machine *machine, union perf_event *event, 113 struct perf_sample *sample); 114 int machine__process_exit_event(struct machine *machine, union perf_event *event, 115 struct perf_sample *sample); 116 int machine__process_fork_event(struct machine *machine, union perf_event *event, 117 struct perf_sample *sample); 118 int machine__process_lost_event(struct machine *machine, union perf_event *event, 119 struct perf_sample *sample); 120 int machine__process_lost_samples_event(struct machine *machine, union perf_event *event, 121 struct perf_sample *sample); 122 int machine__process_aux_event(struct machine *machine, 123 union perf_event *event); 124 int machine__process_itrace_start_event(struct machine *machine, 125 union perf_event *event); 126 int machine__process_switch_event(struct machine *machine, 127 union perf_event *event); 128 int machine__process_namespaces_event(struct machine *machine, 129 union perf_event *event, 130 struct perf_sample *sample); 131 int machine__process_mmap_event(struct machine *machine, union perf_event *event, 132 struct perf_sample *sample); 133 int machine__process_mmap2_event(struct machine *machine, union perf_event *event, 134 struct perf_sample *sample); 135 int machine__process_event(struct machine *machine, union perf_event *event, 136 struct perf_sample *sample); 137 138 typedef void (*machine__process_t)(struct machine *machine, void *data); 139 140 struct machines { 141 struct machine host; 142 struct rb_root guests; 143 }; 144 145 void machines__init(struct machines *machines); 146 void machines__exit(struct machines *machines); 147 148 void machines__process_guests(struct machines *machines, 149 machine__process_t process, void *data); 150 151 struct machine *machines__add(struct machines *machines, pid_t pid, 152 const char *root_dir); 153 struct machine *machines__find_host(struct machines *machines); 154 struct machine *machines__find(struct machines *machines, pid_t pid); 155 struct machine *machines__findnew(struct machines *machines, pid_t pid); 156 157 void machines__set_id_hdr_size(struct machines *machines, u16 id_hdr_size); 158 void machines__set_comm_exec(struct machines *machines, bool comm_exec); 159 160 struct machine *machine__new_host(void); 161 struct machine *machine__new_kallsyms(void); 162 int machine__init(struct machine *machine, const char *root_dir, pid_t pid); 163 void machine__exit(struct machine *machine); 164 void machine__delete_threads(struct machine *machine); 165 void machine__delete(struct machine *machine); 166 void machine__remove_thread(struct machine *machine, struct thread *th); 167 168 struct branch_info *sample__resolve_bstack(struct perf_sample *sample, 169 struct addr_location *al); 170 struct mem_info *sample__resolve_mem(struct perf_sample *sample, 171 struct addr_location *al); 172 173 struct callchain_cursor; 174 175 int thread__resolve_callchain(struct thread *thread, 176 struct callchain_cursor *cursor, 177 struct perf_evsel *evsel, 178 struct perf_sample *sample, 179 struct symbol **parent, 180 struct addr_location *root_al, 181 int max_stack); 182 183 /* 184 * Default guest kernel is defined by parameter --guestkallsyms 185 * and --guestmodules 186 */ 187 static inline bool machine__is_default_guest(struct machine *machine) 188 { 189 return machine ? machine->pid == DEFAULT_GUEST_KERNEL_ID : false; 190 } 191 192 static inline bool machine__is_host(struct machine *machine) 193 { 194 return machine ? machine->pid == HOST_KERNEL_ID : false; 195 } 196 197 struct thread *__machine__findnew_thread(struct machine *machine, pid_t pid, pid_t tid); 198 struct thread *machine__findnew_thread(struct machine *machine, pid_t pid, pid_t tid); 199 200 struct dso *machine__findnew_dso(struct machine *machine, const char *filename); 201 202 size_t machine__fprintf(struct machine *machine, FILE *fp); 203 204 static inline 205 struct symbol *machine__find_kernel_symbol(struct machine *machine, 206 enum map_type type, u64 addr, 207 struct map **mapp) 208 { 209 return map_groups__find_symbol(&machine->kmaps, type, addr, mapp); 210 } 211 212 static inline 213 struct symbol *machine__find_kernel_symbol_by_name(struct machine *machine, 214 enum map_type type, const char *name, 215 struct map **mapp) 216 { 217 return map_groups__find_symbol_by_name(&machine->kmaps, type, name, mapp); 218 } 219 220 static inline 221 struct symbol *machine__find_kernel_function(struct machine *machine, u64 addr, 222 struct map **mapp) 223 { 224 return machine__find_kernel_symbol(machine, MAP__FUNCTION, addr, 225 mapp); 226 } 227 228 static inline 229 struct symbol *machine__find_kernel_function_by_name(struct machine *machine, 230 const char *name, 231 struct map **mapp) 232 { 233 return map_groups__find_function_by_name(&machine->kmaps, name, mapp); 234 } 235 236 struct map *machine__findnew_module_map(struct machine *machine, u64 start, 237 const char *filename); 238 int arch__fix_module_text_start(u64 *start, const char *name); 239 240 int __machine__load_kallsyms(struct machine *machine, const char *filename, 241 enum map_type type); 242 243 static inline int machine__load_kallsyms(struct machine *machine, const char *filename) 244 { 245 return __machine__load_kallsyms(machine, filename, MAP__FUNCTION); 246 } 247 248 int machine__load_vmlinux_path(struct machine *machine); 249 250 size_t machine__fprintf_dsos_buildid(struct machine *machine, FILE *fp, 251 bool (skip)(struct dso *dso, int parm), int parm); 252 size_t machines__fprintf_dsos(struct machines *machines, FILE *fp); 253 size_t machines__fprintf_dsos_buildid(struct machines *machines, FILE *fp, 254 bool (skip)(struct dso *dso, int parm), int parm); 255 256 void machine__destroy_kernel_maps(struct machine *machine); 257 int machine__create_kernel_maps(struct machine *machine); 258 259 int machines__create_kernel_maps(struct machines *machines, pid_t pid); 260 int machines__create_guest_kernel_maps(struct machines *machines); 261 void machines__destroy_kernel_maps(struct machines *machines); 262 263 size_t machine__fprintf_vmlinux_path(struct machine *machine, FILE *fp); 264 265 int machine__for_each_thread(struct machine *machine, 266 int (*fn)(struct thread *thread, void *p), 267 void *priv); 268 int machines__for_each_thread(struct machines *machines, 269 int (*fn)(struct thread *thread, void *p), 270 void *priv); 271 272 int __machine__synthesize_threads(struct machine *machine, struct perf_tool *tool, 273 struct target *target, struct thread_map *threads, 274 perf_event__handler_t process, bool data_mmap, 275 unsigned int proc_map_timeout, 276 unsigned int nr_threads_synthesize); 277 static inline 278 int machine__synthesize_threads(struct machine *machine, struct target *target, 279 struct thread_map *threads, bool data_mmap, 280 unsigned int proc_map_timeout, 281 unsigned int nr_threads_synthesize) 282 { 283 return __machine__synthesize_threads(machine, NULL, target, threads, 284 perf_event__process, data_mmap, 285 proc_map_timeout, 286 nr_threads_synthesize); 287 } 288 289 pid_t machine__get_current_tid(struct machine *machine, int cpu); 290 int machine__set_current_tid(struct machine *machine, int cpu, pid_t pid, 291 pid_t tid); 292 /* 293 * For use with libtraceevent's pevent_set_function_resolver() 294 */ 295 char *machine__resolve_kernel_addr(void *vmachine, unsigned long long *addrp, char **modp); 296 297 #endif /* __PERF_MACHINE_H */ 298