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