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 bool single_address_space; 46 char *root_dir; 47 char *mmap_name; 48 struct threads threads[THREADS__TABLE_SIZE]; 49 struct vdso_info *vdso_info; 50 struct perf_env *env; 51 struct dsos dsos; 52 struct map_groups kmaps; 53 struct map *vmlinux_map; 54 u64 kernel_start; 55 pid_t *current_tid; 56 union { /* Tool specific area */ 57 void *priv; 58 u64 db_id; 59 }; 60 bool trampolines_mapped; 61 }; 62 63 static inline struct threads *machine__threads(struct machine *machine, pid_t tid) 64 { 65 /* Cast it to handle tid == -1 */ 66 return &machine->threads[(unsigned int)tid % THREADS__TABLE_SIZE]; 67 } 68 69 /* 70 * The main kernel (vmlinux) map 71 */ 72 static inline 73 struct map *machine__kernel_map(struct machine *machine) 74 { 75 return machine->vmlinux_map; 76 } 77 78 /* 79 * kernel (the one returned by machine__kernel_map()) plus kernel modules maps 80 */ 81 static inline 82 struct maps *machine__kernel_maps(struct machine *machine) 83 { 84 return &machine->kmaps.maps; 85 } 86 87 int machine__get_kernel_start(struct machine *machine); 88 89 static inline u64 machine__kernel_start(struct machine *machine) 90 { 91 if (!machine->kernel_start) 92 machine__get_kernel_start(machine); 93 return machine->kernel_start; 94 } 95 96 static inline bool machine__kernel_ip(struct machine *machine, u64 ip) 97 { 98 u64 kernel_start = machine__kernel_start(machine); 99 100 return ip >= kernel_start; 101 } 102 103 u8 machine__addr_cpumode(struct machine *machine, u8 cpumode, u64 addr); 104 105 struct thread *machine__find_thread(struct machine *machine, pid_t pid, 106 pid_t tid); 107 struct comm *machine__thread_exec_comm(struct machine *machine, 108 struct thread *thread); 109 110 int machine__process_comm_event(struct machine *machine, union perf_event *event, 111 struct perf_sample *sample); 112 int machine__process_exit_event(struct machine *machine, union perf_event *event, 113 struct perf_sample *sample); 114 int machine__process_fork_event(struct machine *machine, union perf_event *event, 115 struct perf_sample *sample); 116 int machine__process_lost_event(struct machine *machine, union perf_event *event, 117 struct perf_sample *sample); 118 int machine__process_lost_samples_event(struct machine *machine, union perf_event *event, 119 struct perf_sample *sample); 120 int machine__process_aux_event(struct machine *machine, 121 union perf_event *event); 122 int machine__process_itrace_start_event(struct machine *machine, 123 union perf_event *event); 124 int machine__process_switch_event(struct machine *machine, 125 union perf_event *event); 126 int machine__process_namespaces_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_event(struct machine *machine, union perf_event *event, 134 struct perf_sample *sample); 135 136 typedef void (*machine__process_t)(struct machine *machine, void *data); 137 138 struct machines { 139 struct machine host; 140 struct rb_root guests; 141 }; 142 143 void machines__init(struct machines *machines); 144 void machines__exit(struct machines *machines); 145 146 void machines__process_guests(struct machines *machines, 147 machine__process_t process, void *data); 148 149 struct machine *machines__add(struct machines *machines, pid_t pid, 150 const char *root_dir); 151 struct machine *machines__find_host(struct machines *machines); 152 struct machine *machines__find(struct machines *machines, pid_t pid); 153 struct machine *machines__findnew(struct machines *machines, pid_t pid); 154 155 void machines__set_id_hdr_size(struct machines *machines, u16 id_hdr_size); 156 void machines__set_comm_exec(struct machines *machines, bool comm_exec); 157 158 struct machine *machine__new_host(void); 159 struct machine *machine__new_kallsyms(void); 160 int machine__init(struct machine *machine, const char *root_dir, pid_t pid); 161 void machine__exit(struct machine *machine); 162 void machine__delete_threads(struct machine *machine); 163 void machine__delete(struct machine *machine); 164 void machine__remove_thread(struct machine *machine, struct thread *th); 165 166 struct branch_info *sample__resolve_bstack(struct perf_sample *sample, 167 struct addr_location *al); 168 struct mem_info *sample__resolve_mem(struct perf_sample *sample, 169 struct addr_location *al); 170 171 struct callchain_cursor; 172 173 int thread__resolve_callchain(struct thread *thread, 174 struct callchain_cursor *cursor, 175 struct perf_evsel *evsel, 176 struct perf_sample *sample, 177 struct symbol **parent, 178 struct addr_location *root_al, 179 int max_stack); 180 181 /* 182 * Default guest kernel is defined by parameter --guestkallsyms 183 * and --guestmodules 184 */ 185 static inline bool machine__is_default_guest(struct machine *machine) 186 { 187 return machine ? machine->pid == DEFAULT_GUEST_KERNEL_ID : false; 188 } 189 190 static inline bool machine__is_host(struct machine *machine) 191 { 192 return machine ? machine->pid == HOST_KERNEL_ID : false; 193 } 194 195 bool machine__is(struct machine *machine, const char *arch); 196 int machine__nr_cpus_avail(struct machine *machine); 197 198 struct thread *__machine__findnew_thread(struct machine *machine, pid_t pid, pid_t tid); 199 struct thread *machine__findnew_thread(struct machine *machine, pid_t pid, pid_t tid); 200 201 struct dso *machine__findnew_dso(struct machine *machine, const char *filename); 202 203 size_t machine__fprintf(struct machine *machine, FILE *fp); 204 205 static inline 206 struct symbol *machine__find_kernel_symbol(struct machine *machine, u64 addr, 207 struct map **mapp) 208 { 209 return map_groups__find_symbol(&machine->kmaps, addr, mapp); 210 } 211 212 static inline 213 struct symbol *machine__find_kernel_symbol_by_name(struct machine *machine, 214 const char *name, 215 struct map **mapp) 216 { 217 return map_groups__find_symbol_by_name(&machine->kmaps, name, mapp); 218 } 219 220 struct map *machine__findnew_module_map(struct machine *machine, u64 start, 221 const char *filename); 222 int arch__fix_module_text_start(u64 *start, const char *name); 223 224 int machine__load_kallsyms(struct machine *machine, const char *filename); 225 226 int machine__load_vmlinux_path(struct machine *machine); 227 228 size_t machine__fprintf_dsos_buildid(struct machine *machine, FILE *fp, 229 bool (skip)(struct dso *dso, int parm), int parm); 230 size_t machines__fprintf_dsos(struct machines *machines, FILE *fp); 231 size_t machines__fprintf_dsos_buildid(struct machines *machines, FILE *fp, 232 bool (skip)(struct dso *dso, int parm), int parm); 233 234 void machine__destroy_kernel_maps(struct machine *machine); 235 int machine__create_kernel_maps(struct machine *machine); 236 237 int machines__create_kernel_maps(struct machines *machines, pid_t pid); 238 int machines__create_guest_kernel_maps(struct machines *machines); 239 void machines__destroy_kernel_maps(struct machines *machines); 240 241 size_t machine__fprintf_vmlinux_path(struct machine *machine, FILE *fp); 242 243 int machine__for_each_thread(struct machine *machine, 244 int (*fn)(struct thread *thread, void *p), 245 void *priv); 246 int machines__for_each_thread(struct machines *machines, 247 int (*fn)(struct thread *thread, void *p), 248 void *priv); 249 250 int __machine__synthesize_threads(struct machine *machine, struct perf_tool *tool, 251 struct target *target, struct thread_map *threads, 252 perf_event__handler_t process, bool data_mmap, 253 unsigned int nr_threads_synthesize); 254 static inline 255 int machine__synthesize_threads(struct machine *machine, struct target *target, 256 struct thread_map *threads, bool data_mmap, 257 unsigned int nr_threads_synthesize) 258 { 259 return __machine__synthesize_threads(machine, NULL, target, threads, 260 perf_event__process, data_mmap, 261 nr_threads_synthesize); 262 } 263 264 pid_t machine__get_current_tid(struct machine *machine, int cpu); 265 int machine__set_current_tid(struct machine *machine, int cpu, pid_t pid, 266 pid_t tid); 267 /* 268 * For use with libtraceevent's tep_set_function_resolver() 269 */ 270 char *machine__resolve_kernel_addr(void *vmachine, unsigned long long *addrp, char **modp); 271 272 void machine__get_kallsyms_filename(struct machine *machine, char *buf, 273 size_t bufsz); 274 275 int machine__create_extra_kernel_maps(struct machine *machine, 276 struct dso *kernel); 277 278 /* Kernel-space maps for symbols that are outside the main kernel map and module maps */ 279 struct extra_kernel_map { 280 u64 start; 281 u64 end; 282 u64 pgoff; 283 char name[KMAP_NAME_LEN]; 284 }; 285 286 int machine__create_extra_kernel_map(struct machine *machine, 287 struct dso *kernel, 288 struct extra_kernel_map *xm); 289 290 int machine__map_x86_64_entry_trampolines(struct machine *machine, 291 struct dso *kernel); 292 293 #endif /* __PERF_MACHINE_H */ 294