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 #include "threads.h" 11 12 struct addr_location; 13 struct branch_stack; 14 struct dso; 15 struct dso_id; 16 struct evsel; 17 struct perf_sample; 18 struct symbol; 19 struct target; 20 struct thread; 21 union perf_event; 22 struct machines; 23 24 /* Native host kernel uses -1 as pid index in machine */ 25 #define HOST_KERNEL_ID (-1) 26 #define DEFAULT_GUEST_KERNEL_ID (0) 27 28 extern const char *ref_reloc_sym_names[]; 29 30 struct vdso_info; 31 32 struct machine { 33 struct rb_node rb_node; 34 pid_t pid; 35 u16 id_hdr_size; 36 bool comm_exec; 37 bool kptr_restrict_warned; 38 bool single_address_space; 39 char *root_dir; 40 char *mmap_name; 41 char *kallsyms_filename; 42 struct threads threads; 43 struct vdso_info *vdso_info; 44 struct perf_env *env; 45 struct dsos dsos; 46 struct maps *kmaps; 47 struct map *vmlinux_map; 48 u64 kernel_start; 49 struct { 50 u64 text_start; 51 u64 text_end; 52 } sched, lock; 53 pid_t *current_tid; 54 size_t current_tid_sz; 55 union { /* Tool specific area */ 56 void *priv; 57 u64 db_id; 58 }; 59 struct machines *machines; 60 bool trampolines_mapped; 61 }; 62 63 /* 64 * The main kernel (vmlinux) map 65 */ 66 static inline 67 struct map *machine__kernel_map(struct machine *machine) 68 { 69 return machine->vmlinux_map; 70 } 71 72 /* 73 * kernel (the one returned by machine__kernel_map()) plus kernel modules maps 74 */ 75 static inline 76 struct maps *machine__kernel_maps(struct machine *machine) 77 { 78 return machine->kmaps; 79 } 80 81 int machine__get_kernel_start(struct machine *machine); 82 83 static inline u64 machine__kernel_start(struct machine *machine) 84 { 85 if (!machine->kernel_start) 86 machine__get_kernel_start(machine); 87 return machine->kernel_start; 88 } 89 90 static inline bool machine__kernel_ip(struct machine *machine, u64 ip) 91 { 92 u64 kernel_start = machine__kernel_start(machine); 93 94 return ip >= kernel_start; 95 } 96 97 u8 machine__addr_cpumode(struct machine *machine, u8 cpumode, u64 addr); 98 99 struct thread *machine__find_thread(struct machine *machine, pid_t pid, 100 pid_t tid); 101 struct thread *machine__idle_thread(struct machine *machine); 102 struct comm *machine__thread_exec_comm(struct machine *machine, 103 struct thread *thread); 104 105 int machine__process_comm_event(struct machine *machine, union perf_event *event, 106 struct perf_sample *sample); 107 int machine__process_exit_event(struct machine *machine, union perf_event *event, 108 struct perf_sample *sample); 109 int machine__process_fork_event(struct machine *machine, union perf_event *event, 110 struct perf_sample *sample); 111 int machine__process_lost_event(struct machine *machine, union perf_event *event, 112 struct perf_sample *sample); 113 int machine__process_lost_samples_event(struct machine *machine, union perf_event *event, 114 struct perf_sample *sample); 115 int machine__process_aux_event(struct machine *machine, 116 union perf_event *event); 117 int machine__process_itrace_start_event(struct machine *machine, 118 union perf_event *event); 119 int machine__process_aux_output_hw_id_event(struct machine *machine, 120 union perf_event *event); 121 int machine__process_switch_event(struct machine *machine, 122 union perf_event *event); 123 int machine__process_namespaces_event(struct machine *machine, 124 union perf_event *event, 125 struct perf_sample *sample); 126 int machine__process_cgroup_event(struct machine *machine, 127 union perf_event *event, 128 struct perf_sample *sample); 129 int machine__process_mmap_event(struct machine *machine, union perf_event *event, 130 struct perf_sample *sample); 131 int machine__process_mmap2_event(struct machine *machine, union perf_event *event, 132 struct perf_sample *sample); 133 int machine__process_ksymbol(struct machine *machine, 134 union perf_event *event, 135 struct perf_sample *sample); 136 int machine__process_text_poke(struct machine *machine, 137 union perf_event *event, 138 struct perf_sample *sample); 139 int machine__process_event(struct machine *machine, union perf_event *event, 140 struct perf_sample *sample); 141 142 typedef void (*machine__process_t)(struct machine *machine, void *data); 143 144 struct machines { 145 struct machine host; 146 struct rb_root_cached guests; 147 }; 148 149 void machines__init(struct machines *machines); 150 void machines__exit(struct machines *machines); 151 152 void machines__process_guests(struct machines *machines, 153 machine__process_t process, void *data); 154 155 struct machine *machines__add(struct machines *machines, pid_t pid, 156 const char *root_dir); 157 struct machine *machines__find(struct machines *machines, pid_t pid); 158 struct machine *machines__findnew(struct machines *machines, pid_t pid); 159 struct machine *machines__find_guest(struct machines *machines, pid_t pid); 160 struct thread *machines__findnew_guest_code(struct machines *machines, pid_t pid); 161 struct thread *machine__findnew_guest_code(struct machine *machine, pid_t pid); 162 163 void machines__set_id_hdr_size(struct machines *machines, u16 id_hdr_size); 164 void machines__set_comm_exec(struct machines *machines, bool comm_exec); 165 166 struct machine *machine__new_host(void); 167 struct machine *machine__new_kallsyms(void); 168 int machine__init(struct machine *machine, const char *root_dir, pid_t pid); 169 void machine__exit(struct machine *machine); 170 void machine__delete_threads(struct machine *machine); 171 void machine__delete(struct machine *machine); 172 void machine__remove_thread(struct machine *machine, struct thread *th); 173 174 struct branch_info *sample__resolve_bstack(struct perf_sample *sample, 175 struct addr_location *al); 176 struct mem_info *sample__resolve_mem(struct perf_sample *sample, 177 struct addr_location *al); 178 179 struct callchain_cursor; 180 181 int thread__resolve_callchain(struct thread *thread, 182 struct callchain_cursor *cursor, 183 struct evsel *evsel, 184 struct perf_sample *sample, 185 struct symbol **parent, 186 struct addr_location *root_al, 187 int max_stack); 188 189 /* 190 * Default guest kernel is defined by parameter --guestkallsyms 191 * and --guestmodules 192 */ 193 static inline bool machine__is_default_guest(struct machine *machine) 194 { 195 return machine ? machine->pid == DEFAULT_GUEST_KERNEL_ID : false; 196 } 197 198 static inline bool machine__is_host(struct machine *machine) 199 { 200 return machine ? machine->pid == HOST_KERNEL_ID : false; 201 } 202 203 bool machine__is_lock_function(struct machine *machine, u64 addr); 204 bool machine__is(struct machine *machine, const char *arch); 205 bool machine__normalized_is(struct machine *machine, const char *arch); 206 int machine__nr_cpus_avail(struct machine *machine); 207 208 struct thread *machine__findnew_thread(struct machine *machine, pid_t pid, pid_t tid); 209 210 struct dso *machine__findnew_dso_id(struct machine *machine, const char *filename, struct dso_id *id); 211 struct dso *machine__findnew_dso(struct machine *machine, const char *filename); 212 213 size_t machine__fprintf(struct machine *machine, FILE *fp); 214 215 static inline 216 struct symbol *machine__find_kernel_symbol(struct machine *machine, u64 addr, 217 struct map **mapp) 218 { 219 return maps__find_symbol(machine->kmaps, addr, mapp); 220 } 221 222 static inline 223 struct symbol *machine__find_kernel_symbol_by_name(struct machine *machine, 224 const char *name, 225 struct map **mapp) 226 { 227 return maps__find_symbol_by_name(machine->kmaps, name, mapp); 228 } 229 230 int arch__fix_module_text_start(u64 *start, u64 *size, const char *name); 231 232 int machine__load_kallsyms(struct machine *machine, const char *filename); 233 234 int machine__load_vmlinux_path(struct machine *machine); 235 236 size_t machine__fprintf_dsos_buildid(struct machine *machine, FILE *fp, 237 bool (skip)(struct dso *dso, int parm), int parm); 238 size_t machines__fprintf_dsos(struct machines *machines, FILE *fp); 239 size_t machines__fprintf_dsos_buildid(struct machines *machines, FILE *fp, 240 bool (skip)(struct dso *dso, int parm), int parm); 241 242 void machine__destroy_kernel_maps(struct machine *machine); 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 typedef int (*machine__dso_t)(struct dso *dso, struct machine *machine, void *priv); 252 253 int machine__for_each_dso(struct machine *machine, machine__dso_t fn, 254 void *priv); 255 256 typedef int (*machine__map_t)(struct map *map, void *priv); 257 int machine__for_each_kernel_map(struct machine *machine, machine__map_t fn, 258 void *priv); 259 260 int machine__for_each_thread(struct machine *machine, 261 int (*fn)(struct thread *thread, void *p), 262 void *priv); 263 int machines__for_each_thread(struct machines *machines, 264 int (*fn)(struct thread *thread, void *p), 265 void *priv); 266 267 struct thread_list { 268 struct list_head list; 269 struct thread *thread; 270 }; 271 272 /* Make a list of struct thread_list based on threads in the machine. */ 273 int machine__thread_list(struct machine *machine, struct list_head *list); 274 /* Free up the nodes within the thread_list list. */ 275 void thread_list__delete(struct list_head *list); 276 277 pid_t machine__get_current_tid(struct machine *machine, int cpu); 278 int machine__set_current_tid(struct machine *machine, int cpu, pid_t pid, 279 pid_t tid); 280 /* 281 * For use with libtraceevent's tep_set_function_resolver() 282 */ 283 char *machine__resolve_kernel_addr(void *vmachine, unsigned long long *addrp, char **modp); 284 285 void machine__get_kallsyms_filename(struct machine *machine, char *buf, 286 size_t bufsz); 287 288 int machine__create_extra_kernel_maps(struct machine *machine, 289 struct dso *kernel); 290 291 /* Kernel-space maps for symbols that are outside the main kernel map and module maps */ 292 struct extra_kernel_map { 293 u64 start; 294 u64 end; 295 u64 pgoff; 296 char name[KMAP_NAME_LEN]; 297 }; 298 299 int machine__create_extra_kernel_map(struct machine *machine, 300 struct dso *kernel, 301 struct extra_kernel_map *xm); 302 303 int machine__map_x86_64_entry_trampolines(struct machine *machine, 304 struct dso *kernel); 305 306 int machine__resolve(struct machine *machine, struct addr_location *al, 307 struct perf_sample *sample); 308 309 #endif /* __PERF_MACHINE_H */ 310