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 struct threads threads[THREADS__TABLE_SIZE]; 52 struct vdso_info *vdso_info; 53 struct perf_env *env; 54 struct dsos dsos; 55 struct maps *kmaps; 56 struct map *vmlinux_map; 57 u64 kernel_start; 58 pid_t *current_tid; 59 union { /* Tool specific area */ 60 void *priv; 61 u64 db_id; 62 }; 63 struct machines *machines; 64 bool trampolines_mapped; 65 }; 66 67 static inline struct threads *machine__threads(struct machine *machine, pid_t tid) 68 { 69 /* Cast it to handle tid == -1 */ 70 return &machine->threads[(unsigned int)tid % THREADS__TABLE_SIZE]; 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->vmlinux_map; 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; 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 u8 machine__addr_cpumode(struct machine *machine, u8 cpumode, u64 addr); 108 109 struct thread *machine__find_thread(struct machine *machine, pid_t pid, 110 pid_t tid); 111 struct thread *machine__idle_thread(struct machine *machine); 112 struct comm *machine__thread_exec_comm(struct machine *machine, 113 struct thread *thread); 114 115 int machine__process_comm_event(struct machine *machine, union perf_event *event, 116 struct perf_sample *sample); 117 int machine__process_exit_event(struct machine *machine, union perf_event *event, 118 struct perf_sample *sample); 119 int machine__process_fork_event(struct machine *machine, union perf_event *event, 120 struct perf_sample *sample); 121 int machine__process_lost_event(struct machine *machine, union perf_event *event, 122 struct perf_sample *sample); 123 int machine__process_lost_samples_event(struct machine *machine, union perf_event *event, 124 struct perf_sample *sample); 125 int machine__process_aux_event(struct machine *machine, 126 union perf_event *event); 127 int machine__process_itrace_start_event(struct machine *machine, 128 union perf_event *event); 129 int machine__process_aux_output_hw_id_event(struct machine *machine, 130 union perf_event *event); 131 int machine__process_switch_event(struct machine *machine, 132 union perf_event *event); 133 int machine__process_namespaces_event(struct machine *machine, 134 union perf_event *event, 135 struct perf_sample *sample); 136 int machine__process_cgroup_event(struct machine *machine, 137 union perf_event *event, 138 struct perf_sample *sample); 139 int machine__process_mmap_event(struct machine *machine, union perf_event *event, 140 struct perf_sample *sample); 141 int machine__process_mmap2_event(struct machine *machine, union perf_event *event, 142 struct perf_sample *sample); 143 int machine__process_ksymbol(struct machine *machine, 144 union perf_event *event, 145 struct perf_sample *sample); 146 int machine__process_text_poke(struct machine *machine, 147 union perf_event *event, 148 struct perf_sample *sample); 149 int machine__process_event(struct machine *machine, union perf_event *event, 150 struct perf_sample *sample); 151 152 typedef void (*machine__process_t)(struct machine *machine, void *data); 153 154 struct machines { 155 struct machine host; 156 struct rb_root_cached guests; 157 }; 158 159 void machines__init(struct machines *machines); 160 void machines__exit(struct machines *machines); 161 162 void machines__process_guests(struct machines *machines, 163 machine__process_t process, void *data); 164 165 struct machine *machines__add(struct machines *machines, pid_t pid, 166 const char *root_dir); 167 struct machine *machines__find(struct machines *machines, pid_t pid); 168 struct machine *machines__findnew(struct machines *machines, pid_t pid); 169 struct machine *machines__find_guest(struct machines *machines, pid_t pid); 170 struct thread *machines__findnew_guest_code(struct machines *machines, pid_t pid); 171 struct thread *machine__findnew_guest_code(struct machine *machine, pid_t pid); 172 173 void machines__set_id_hdr_size(struct machines *machines, u16 id_hdr_size); 174 void machines__set_comm_exec(struct machines *machines, bool comm_exec); 175 176 struct machine *machine__new_host(void); 177 struct machine *machine__new_kallsyms(void); 178 int machine__init(struct machine *machine, const char *root_dir, pid_t pid); 179 void machine__exit(struct machine *machine); 180 void machine__delete_threads(struct machine *machine); 181 void machine__delete(struct machine *machine); 182 void machine__remove_thread(struct machine *machine, struct thread *th); 183 184 struct branch_info *sample__resolve_bstack(struct perf_sample *sample, 185 struct addr_location *al); 186 struct mem_info *sample__resolve_mem(struct perf_sample *sample, 187 struct addr_location *al); 188 189 struct callchain_cursor; 190 191 int thread__resolve_callchain(struct thread *thread, 192 struct callchain_cursor *cursor, 193 struct evsel *evsel, 194 struct perf_sample *sample, 195 struct symbol **parent, 196 struct addr_location *root_al, 197 int max_stack); 198 199 /* 200 * Default guest kernel is defined by parameter --guestkallsyms 201 * and --guestmodules 202 */ 203 static inline bool machine__is_default_guest(struct machine *machine) 204 { 205 return machine ? machine->pid == DEFAULT_GUEST_KERNEL_ID : false; 206 } 207 208 static inline bool machine__is_host(struct machine *machine) 209 { 210 return machine ? machine->pid == HOST_KERNEL_ID : false; 211 } 212 213 bool machine__is(struct machine *machine, const char *arch); 214 bool machine__normalized_is(struct machine *machine, const char *arch); 215 int machine__nr_cpus_avail(struct machine *machine); 216 217 struct thread *__machine__findnew_thread(struct machine *machine, pid_t pid, pid_t tid); 218 struct thread *machine__findnew_thread(struct machine *machine, pid_t pid, pid_t tid); 219 220 struct dso *machine__findnew_dso_id(struct machine *machine, const char *filename, struct dso_id *id); 221 struct dso *machine__findnew_dso(struct machine *machine, const char *filename); 222 223 size_t machine__fprintf(struct machine *machine, FILE *fp); 224 225 static inline 226 struct symbol *machine__find_kernel_symbol(struct machine *machine, u64 addr, 227 struct map **mapp) 228 { 229 return maps__find_symbol(machine->kmaps, addr, mapp); 230 } 231 232 static inline 233 struct symbol *machine__find_kernel_symbol_by_name(struct machine *machine, 234 const char *name, 235 struct map **mapp) 236 { 237 return maps__find_symbol_by_name(machine->kmaps, name, mapp); 238 } 239 240 int arch__fix_module_text_start(u64 *start, u64 *size, const char *name); 241 242 int machine__load_kallsyms(struct machine *machine, const char *filename); 243 244 int machine__load_vmlinux_path(struct machine *machine); 245 246 size_t machine__fprintf_dsos_buildid(struct machine *machine, FILE *fp, 247 bool (skip)(struct dso *dso, int parm), int parm); 248 size_t machines__fprintf_dsos(struct machines *machines, FILE *fp); 249 size_t machines__fprintf_dsos_buildid(struct machines *machines, FILE *fp, 250 bool (skip)(struct dso *dso, int parm), int parm); 251 252 void machine__destroy_kernel_maps(struct machine *machine); 253 int machine__create_kernel_maps(struct machine *machine); 254 255 int machines__create_kernel_maps(struct machines *machines, pid_t pid); 256 int machines__create_guest_kernel_maps(struct machines *machines); 257 void machines__destroy_kernel_maps(struct machines *machines); 258 259 size_t machine__fprintf_vmlinux_path(struct machine *machine, FILE *fp); 260 261 typedef int (*machine__dso_t)(struct dso *dso, struct machine *machine, void *priv); 262 263 int machine__for_each_dso(struct machine *machine, machine__dso_t fn, 264 void *priv); 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 pid_t machine__get_current_tid(struct machine *machine, int cpu); 273 int machine__set_current_tid(struct machine *machine, int cpu, pid_t pid, 274 pid_t tid); 275 /* 276 * For use with libtraceevent's tep_set_function_resolver() 277 */ 278 char *machine__resolve_kernel_addr(void *vmachine, unsigned long long *addrp, char **modp); 279 280 void machine__get_kallsyms_filename(struct machine *machine, char *buf, 281 size_t bufsz); 282 283 int machine__create_extra_kernel_maps(struct machine *machine, 284 struct dso *kernel); 285 286 /* Kernel-space maps for symbols that are outside the main kernel map and module maps */ 287 struct extra_kernel_map { 288 u64 start; 289 u64 end; 290 u64 pgoff; 291 char name[KMAP_NAME_LEN]; 292 }; 293 294 int machine__create_extra_kernel_map(struct machine *machine, 295 struct dso *kernel, 296 struct extra_kernel_map *xm); 297 298 int machine__map_x86_64_entry_trampolines(struct machine *machine, 299 struct dso *kernel); 300 301 #endif /* __PERF_MACHINE_H */ 302