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_groups.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_cached 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_ksymbol(struct machine *machine, 134 union perf_event *event, 135 struct perf_sample *sample); 136 int machine__process_event(struct machine *machine, union perf_event *event, 137 struct perf_sample *sample); 138 139 typedef void (*machine__process_t)(struct machine *machine, void *data); 140 141 struct machines { 142 struct machine host; 143 struct rb_root_cached guests; 144 }; 145 146 void machines__init(struct machines *machines); 147 void machines__exit(struct machines *machines); 148 149 void machines__process_guests(struct machines *machines, 150 machine__process_t process, void *data); 151 152 struct machine *machines__add(struct machines *machines, pid_t pid, 153 const char *root_dir); 154 struct machine *machines__find_host(struct machines *machines); 155 struct machine *machines__find(struct machines *machines, pid_t pid); 156 struct machine *machines__findnew(struct machines *machines, pid_t pid); 157 158 void machines__set_id_hdr_size(struct machines *machines, u16 id_hdr_size); 159 void machines__set_comm_exec(struct machines *machines, bool comm_exec); 160 161 struct machine *machine__new_host(void); 162 struct machine *machine__new_kallsyms(void); 163 int machine__init(struct machine *machine, const char *root_dir, pid_t pid); 164 void machine__exit(struct machine *machine); 165 void machine__delete_threads(struct machine *machine); 166 void machine__delete(struct machine *machine); 167 void machine__remove_thread(struct machine *machine, struct thread *th); 168 169 struct branch_info *sample__resolve_bstack(struct perf_sample *sample, 170 struct addr_location *al); 171 struct mem_info *sample__resolve_mem(struct perf_sample *sample, 172 struct addr_location *al); 173 174 struct callchain_cursor; 175 176 int thread__resolve_callchain(struct thread *thread, 177 struct callchain_cursor *cursor, 178 struct perf_evsel *evsel, 179 struct perf_sample *sample, 180 struct symbol **parent, 181 struct addr_location *root_al, 182 int max_stack); 183 184 /* 185 * Default guest kernel is defined by parameter --guestkallsyms 186 * and --guestmodules 187 */ 188 static inline bool machine__is_default_guest(struct machine *machine) 189 { 190 return machine ? machine->pid == DEFAULT_GUEST_KERNEL_ID : false; 191 } 192 193 static inline bool machine__is_host(struct machine *machine) 194 { 195 return machine ? machine->pid == HOST_KERNEL_ID : false; 196 } 197 198 bool machine__is(struct machine *machine, const char *arch); 199 int machine__nr_cpus_avail(struct machine *machine); 200 201 struct thread *__machine__findnew_thread(struct machine *machine, pid_t pid, pid_t tid); 202 struct thread *machine__findnew_thread(struct machine *machine, pid_t pid, pid_t tid); 203 204 struct dso *machine__findnew_dso(struct machine *machine, const char *filename); 205 206 size_t machine__fprintf(struct machine *machine, FILE *fp); 207 208 static inline 209 struct symbol *machine__find_kernel_symbol(struct machine *machine, u64 addr, 210 struct map **mapp) 211 { 212 return map_groups__find_symbol(&machine->kmaps, addr, mapp); 213 } 214 215 static inline 216 struct symbol *machine__find_kernel_symbol_by_name(struct machine *machine, 217 const char *name, 218 struct map **mapp) 219 { 220 return map_groups__find_symbol_by_name(&machine->kmaps, name, mapp); 221 } 222 223 struct map *machine__findnew_module_map(struct machine *machine, u64 start, 224 const char *filename); 225 int arch__fix_module_text_start(u64 *start, const char *name); 226 227 int machine__load_kallsyms(struct machine *machine, const char *filename); 228 229 int machine__load_vmlinux_path(struct machine *machine); 230 231 size_t machine__fprintf_dsos_buildid(struct machine *machine, FILE *fp, 232 bool (skip)(struct dso *dso, int parm), int parm); 233 size_t machines__fprintf_dsos(struct machines *machines, FILE *fp); 234 size_t machines__fprintf_dsos_buildid(struct machines *machines, FILE *fp, 235 bool (skip)(struct dso *dso, int parm), int parm); 236 237 void machine__destroy_kernel_maps(struct machine *machine); 238 int machine__create_kernel_maps(struct machine *machine); 239 240 int machines__create_kernel_maps(struct machines *machines, pid_t pid); 241 int machines__create_guest_kernel_maps(struct machines *machines); 242 void machines__destroy_kernel_maps(struct machines *machines); 243 244 size_t machine__fprintf_vmlinux_path(struct machine *machine, FILE *fp); 245 246 int machine__for_each_thread(struct machine *machine, 247 int (*fn)(struct thread *thread, void *p), 248 void *priv); 249 int machines__for_each_thread(struct machines *machines, 250 int (*fn)(struct thread *thread, void *p), 251 void *priv); 252 253 int __machine__synthesize_threads(struct machine *machine, struct perf_tool *tool, 254 struct target *target, struct thread_map *threads, 255 perf_event__handler_t process, bool data_mmap, 256 unsigned int nr_threads_synthesize); 257 static inline 258 int machine__synthesize_threads(struct machine *machine, struct target *target, 259 struct thread_map *threads, bool data_mmap, 260 unsigned int nr_threads_synthesize) 261 { 262 return __machine__synthesize_threads(machine, NULL, target, threads, 263 perf_event__process, data_mmap, 264 nr_threads_synthesize); 265 } 266 267 pid_t machine__get_current_tid(struct machine *machine, int cpu); 268 int machine__set_current_tid(struct machine *machine, int cpu, pid_t pid, 269 pid_t tid); 270 /* 271 * For use with libtraceevent's tep_set_function_resolver() 272 */ 273 char *machine__resolve_kernel_addr(void *vmachine, unsigned long long *addrp, char **modp); 274 275 void machine__get_kallsyms_filename(struct machine *machine, char *buf, 276 size_t bufsz); 277 278 int machine__create_extra_kernel_maps(struct machine *machine, 279 struct dso *kernel); 280 281 /* Kernel-space maps for symbols that are outside the main kernel map and module maps */ 282 struct extra_kernel_map { 283 u64 start; 284 u64 end; 285 u64 pgoff; 286 char name[KMAP_NAME_LEN]; 287 }; 288 289 int machine__create_extra_kernel_map(struct machine *machine, 290 struct dso *kernel, 291 struct extra_kernel_map *xm); 292 293 int machine__map_x86_64_entry_trampolines(struct machine *machine, 294 struct dso *kernel); 295 296 #endif /* __PERF_MACHINE_H */ 297