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