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 22 /* Native host kernel uses -1 as pid index in machine */ 23 #define HOST_KERNEL_ID (-1) 24 #define DEFAULT_GUEST_KERNEL_ID (0) 25 26 extern const char *ref_reloc_sym_names[]; 27 28 struct vdso_info; 29 30 #define THREADS__TABLE_BITS 8 31 #define THREADS__TABLE_SIZE (1 << THREADS__TABLE_BITS) 32 33 struct threads { 34 struct rb_root_cached entries; 35 struct rw_semaphore lock; 36 unsigned int nr; 37 struct list_head dead; 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 struct threads threads[THREADS__TABLE_SIZE]; 51 struct vdso_info *vdso_info; 52 struct perf_env *env; 53 struct dsos dsos; 54 struct maps *kmaps; 55 struct map *vmlinux_map; 56 u64 kernel_start; 57 pid_t *current_tid; 58 union { /* Tool specific area */ 59 void *priv; 60 u64 db_id; 61 }; 62 bool trampolines_mapped; 63 }; 64 65 static inline struct threads *machine__threads(struct machine *machine, pid_t tid) 66 { 67 /* Cast it to handle tid == -1 */ 68 return &machine->threads[(unsigned int)tid % THREADS__TABLE_SIZE]; 69 } 70 71 /* 72 * The main kernel (vmlinux) map 73 */ 74 static inline 75 struct map *machine__kernel_map(struct machine *machine) 76 { 77 return machine->vmlinux_map; 78 } 79 80 /* 81 * kernel (the one returned by machine__kernel_map()) plus kernel modules maps 82 */ 83 static inline 84 struct maps *machine__kernel_maps(struct machine *machine) 85 { 86 return machine->kmaps; 87 } 88 89 int machine__get_kernel_start(struct machine *machine); 90 91 static inline u64 machine__kernel_start(struct machine *machine) 92 { 93 if (!machine->kernel_start) 94 machine__get_kernel_start(machine); 95 return machine->kernel_start; 96 } 97 98 static inline bool machine__kernel_ip(struct machine *machine, u64 ip) 99 { 100 u64 kernel_start = machine__kernel_start(machine); 101 102 return ip >= kernel_start; 103 } 104 105 u8 machine__addr_cpumode(struct machine *machine, u8 cpumode, u64 addr); 106 107 struct thread *machine__find_thread(struct machine *machine, pid_t pid, 108 pid_t tid); 109 struct thread *machine__idle_thread(struct machine *machine); 110 struct comm *machine__thread_exec_comm(struct machine *machine, 111 struct thread *thread); 112 113 int machine__process_comm_event(struct machine *machine, union perf_event *event, 114 struct perf_sample *sample); 115 int machine__process_exit_event(struct machine *machine, union perf_event *event, 116 struct perf_sample *sample); 117 int machine__process_fork_event(struct machine *machine, union perf_event *event, 118 struct perf_sample *sample); 119 int machine__process_lost_event(struct machine *machine, union perf_event *event, 120 struct perf_sample *sample); 121 int machine__process_lost_samples_event(struct machine *machine, union perf_event *event, 122 struct perf_sample *sample); 123 int machine__process_aux_event(struct machine *machine, 124 union perf_event *event); 125 int machine__process_itrace_start_event(struct machine *machine, 126 union perf_event *event); 127 int machine__process_aux_output_hw_id_event(struct machine *machine, 128 union perf_event *event); 129 int machine__process_switch_event(struct machine *machine, 130 union perf_event *event); 131 int machine__process_namespaces_event(struct machine *machine, 132 union perf_event *event, 133 struct perf_sample *sample); 134 int machine__process_cgroup_event(struct machine *machine, 135 union perf_event *event, 136 struct perf_sample *sample); 137 int machine__process_mmap_event(struct machine *machine, union perf_event *event, 138 struct perf_sample *sample); 139 int machine__process_mmap2_event(struct machine *machine, union perf_event *event, 140 struct perf_sample *sample); 141 int machine__process_ksymbol(struct machine *machine, 142 union perf_event *event, 143 struct perf_sample *sample); 144 int machine__process_text_poke(struct machine *machine, 145 union perf_event *event, 146 struct perf_sample *sample); 147 int machine__process_event(struct machine *machine, union perf_event *event, 148 struct perf_sample *sample); 149 150 typedef void (*machine__process_t)(struct machine *machine, void *data); 151 152 struct machines { 153 struct machine host; 154 struct rb_root_cached guests; 155 }; 156 157 void machines__init(struct machines *machines); 158 void machines__exit(struct machines *machines); 159 160 void machines__process_guests(struct machines *machines, 161 machine__process_t process, void *data); 162 163 struct machine *machines__add(struct machines *machines, pid_t pid, 164 const char *root_dir); 165 struct machine *machines__find_host(struct machines *machines); 166 struct machine *machines__find(struct machines *machines, pid_t pid); 167 struct machine *machines__findnew(struct machines *machines, pid_t pid); 168 struct machine *machines__find_guest(struct machines *machines, pid_t pid); 169 170 void machines__set_id_hdr_size(struct machines *machines, u16 id_hdr_size); 171 void machines__set_comm_exec(struct machines *machines, bool comm_exec); 172 173 struct machine *machine__new_host(void); 174 struct machine *machine__new_kallsyms(void); 175 int machine__init(struct machine *machine, const char *root_dir, pid_t pid); 176 void machine__exit(struct machine *machine); 177 void machine__delete_threads(struct machine *machine); 178 void machine__delete(struct machine *machine); 179 void machine__remove_thread(struct machine *machine, struct thread *th); 180 181 struct branch_info *sample__resolve_bstack(struct perf_sample *sample, 182 struct addr_location *al); 183 struct mem_info *sample__resolve_mem(struct perf_sample *sample, 184 struct addr_location *al); 185 186 struct callchain_cursor; 187 188 int thread__resolve_callchain(struct thread *thread, 189 struct callchain_cursor *cursor, 190 struct evsel *evsel, 191 struct perf_sample *sample, 192 struct symbol **parent, 193 struct addr_location *root_al, 194 int max_stack); 195 196 /* 197 * Default guest kernel is defined by parameter --guestkallsyms 198 * and --guestmodules 199 */ 200 static inline bool machine__is_default_guest(struct machine *machine) 201 { 202 return machine ? machine->pid == DEFAULT_GUEST_KERNEL_ID : false; 203 } 204 205 static inline bool machine__is_host(struct machine *machine) 206 { 207 return machine ? machine->pid == HOST_KERNEL_ID : false; 208 } 209 210 bool machine__is(struct machine *machine, const char *arch); 211 bool machine__normalized_is(struct machine *machine, const char *arch); 212 int machine__nr_cpus_avail(struct machine *machine); 213 214 struct thread *__machine__findnew_thread(struct machine *machine, pid_t pid, pid_t tid); 215 struct thread *machine__findnew_thread(struct machine *machine, pid_t pid, pid_t tid); 216 217 struct dso *machine__findnew_dso_id(struct machine *machine, const char *filename, struct dso_id *id); 218 struct dso *machine__findnew_dso(struct machine *machine, const char *filename); 219 220 size_t machine__fprintf(struct machine *machine, FILE *fp); 221 222 static inline 223 struct symbol *machine__find_kernel_symbol(struct machine *machine, u64 addr, 224 struct map **mapp) 225 { 226 return maps__find_symbol(machine->kmaps, addr, mapp); 227 } 228 229 static inline 230 struct symbol *machine__find_kernel_symbol_by_name(struct machine *machine, 231 const char *name, 232 struct map **mapp) 233 { 234 return maps__find_symbol_by_name(machine->kmaps, name, mapp); 235 } 236 237 int arch__fix_module_text_start(u64 *start, u64 *size, const char *name); 238 239 int machine__load_kallsyms(struct machine *machine, const char *filename); 240 241 int machine__load_vmlinux_path(struct machine *machine); 242 243 size_t machine__fprintf_dsos_buildid(struct machine *machine, FILE *fp, 244 bool (skip)(struct dso *dso, int parm), int parm); 245 size_t machines__fprintf_dsos(struct machines *machines, FILE *fp); 246 size_t machines__fprintf_dsos_buildid(struct machines *machines, FILE *fp, 247 bool (skip)(struct dso *dso, int parm), int parm); 248 249 void machine__destroy_kernel_maps(struct machine *machine); 250 int machine__create_kernel_maps(struct machine *machine); 251 252 int machines__create_kernel_maps(struct machines *machines, pid_t pid); 253 int machines__create_guest_kernel_maps(struct machines *machines); 254 void machines__destroy_kernel_maps(struct machines *machines); 255 256 size_t machine__fprintf_vmlinux_path(struct machine *machine, FILE *fp); 257 258 typedef int (*machine__dso_t)(struct dso *dso, struct machine *machine, void *priv); 259 260 int machine__for_each_dso(struct machine *machine, machine__dso_t fn, 261 void *priv); 262 int machine__for_each_thread(struct machine *machine, 263 int (*fn)(struct thread *thread, void *p), 264 void *priv); 265 int machines__for_each_thread(struct machines *machines, 266 int (*fn)(struct thread *thread, void *p), 267 void *priv); 268 269 pid_t machine__get_current_tid(struct machine *machine, int cpu); 270 int machine__set_current_tid(struct machine *machine, int cpu, pid_t pid, 271 pid_t tid); 272 /* 273 * For use with libtraceevent's tep_set_function_resolver() 274 */ 275 char *machine__resolve_kernel_addr(void *vmachine, unsigned long long *addrp, char **modp); 276 277 void machine__get_kallsyms_filename(struct machine *machine, char *buf, 278 size_t bufsz); 279 280 int machine__create_extra_kernel_maps(struct machine *machine, 281 struct dso *kernel); 282 283 /* Kernel-space maps for symbols that are outside the main kernel map and module maps */ 284 struct extra_kernel_map { 285 u64 start; 286 u64 end; 287 u64 pgoff; 288 char name[KMAP_NAME_LEN]; 289 }; 290 291 int machine__create_extra_kernel_map(struct machine *machine, 292 struct dso *kernel, 293 struct extra_kernel_map *xm); 294 295 int machine__map_x86_64_entry_trampolines(struct machine *machine, 296 struct dso *kernel); 297 298 #endif /* __PERF_MACHINE_H */ 299