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 comm *machine__thread_exec_comm(struct machine *machine, 110 struct thread *thread); 111 112 int machine__process_comm_event(struct machine *machine, union perf_event *event, 113 struct perf_sample *sample); 114 int machine__process_exit_event(struct machine *machine, union perf_event *event, 115 struct perf_sample *sample); 116 int machine__process_fork_event(struct machine *machine, union perf_event *event, 117 struct perf_sample *sample); 118 int machine__process_lost_event(struct machine *machine, union perf_event *event, 119 struct perf_sample *sample); 120 int machine__process_lost_samples_event(struct machine *machine, union perf_event *event, 121 struct perf_sample *sample); 122 int machine__process_aux_event(struct machine *machine, 123 union perf_event *event); 124 int machine__process_itrace_start_event(struct machine *machine, 125 union perf_event *event); 126 int machine__process_switch_event(struct machine *machine, 127 union perf_event *event); 128 int machine__process_namespaces_event(struct machine *machine, 129 union perf_event *event, 130 struct perf_sample *sample); 131 int machine__process_mmap_event(struct machine *machine, union perf_event *event, 132 struct perf_sample *sample); 133 int machine__process_mmap2_event(struct machine *machine, union perf_event *event, 134 struct perf_sample *sample); 135 int machine__process_ksymbol(struct machine *machine, 136 union perf_event *event, 137 struct perf_sample *sample); 138 int machine__process_event(struct machine *machine, union perf_event *event, 139 struct perf_sample *sample); 140 141 typedef void (*machine__process_t)(struct machine *machine, void *data); 142 143 struct machines { 144 struct machine host; 145 struct rb_root_cached guests; 146 }; 147 148 void machines__init(struct machines *machines); 149 void machines__exit(struct machines *machines); 150 151 void machines__process_guests(struct machines *machines, 152 machine__process_t process, void *data); 153 154 struct machine *machines__add(struct machines *machines, pid_t pid, 155 const char *root_dir); 156 struct machine *machines__find_host(struct machines *machines); 157 struct machine *machines__find(struct machines *machines, pid_t pid); 158 struct machine *machines__findnew(struct machines *machines, pid_t pid); 159 160 void machines__set_id_hdr_size(struct machines *machines, u16 id_hdr_size); 161 void machines__set_comm_exec(struct machines *machines, bool comm_exec); 162 163 struct machine *machine__new_host(void); 164 struct machine *machine__new_kallsyms(void); 165 int machine__init(struct machine *machine, const char *root_dir, pid_t pid); 166 void machine__exit(struct machine *machine); 167 void machine__delete_threads(struct machine *machine); 168 void machine__delete(struct machine *machine); 169 void machine__remove_thread(struct machine *machine, struct thread *th); 170 171 struct branch_info *sample__resolve_bstack(struct perf_sample *sample, 172 struct addr_location *al); 173 struct mem_info *sample__resolve_mem(struct perf_sample *sample, 174 struct addr_location *al); 175 176 struct callchain_cursor; 177 178 int thread__resolve_callchain(struct thread *thread, 179 struct callchain_cursor *cursor, 180 struct evsel *evsel, 181 struct perf_sample *sample, 182 struct symbol **parent, 183 struct addr_location *root_al, 184 int max_stack); 185 186 /* 187 * Default guest kernel is defined by parameter --guestkallsyms 188 * and --guestmodules 189 */ 190 static inline bool machine__is_default_guest(struct machine *machine) 191 { 192 return machine ? machine->pid == DEFAULT_GUEST_KERNEL_ID : false; 193 } 194 195 static inline bool machine__is_host(struct machine *machine) 196 { 197 return machine ? machine->pid == HOST_KERNEL_ID : false; 198 } 199 200 bool machine__is(struct machine *machine, const char *arch); 201 int machine__nr_cpus_avail(struct machine *machine); 202 203 struct thread *__machine__findnew_thread(struct machine *machine, pid_t pid, pid_t tid); 204 struct thread *machine__findnew_thread(struct machine *machine, pid_t pid, pid_t tid); 205 206 struct dso *machine__findnew_dso_id(struct machine *machine, const char *filename, struct dso_id *id); 207 struct dso *machine__findnew_dso(struct machine *machine, const char *filename); 208 209 size_t machine__fprintf(struct machine *machine, FILE *fp); 210 211 static inline 212 struct symbol *machine__find_kernel_symbol(struct machine *machine, u64 addr, 213 struct map **mapp) 214 { 215 return maps__find_symbol(&machine->kmaps, addr, mapp); 216 } 217 218 static inline 219 struct symbol *machine__find_kernel_symbol_by_name(struct machine *machine, 220 const char *name, 221 struct map **mapp) 222 { 223 return maps__find_symbol_by_name(&machine->kmaps, name, mapp); 224 } 225 226 int arch__fix_module_text_start(u64 *start, u64 *size, const char *name); 227 228 int machine__load_kallsyms(struct machine *machine, const char *filename); 229 230 int machine__load_vmlinux_path(struct machine *machine); 231 232 size_t machine__fprintf_dsos_buildid(struct machine *machine, FILE *fp, 233 bool (skip)(struct dso *dso, int parm), int parm); 234 size_t machines__fprintf_dsos(struct machines *machines, FILE *fp); 235 size_t machines__fprintf_dsos_buildid(struct machines *machines, FILE *fp, 236 bool (skip)(struct dso *dso, int parm), int parm); 237 238 void machine__destroy_kernel_maps(struct machine *machine); 239 int machine__create_kernel_maps(struct machine *machine); 240 241 int machines__create_kernel_maps(struct machines *machines, pid_t pid); 242 int machines__create_guest_kernel_maps(struct machines *machines); 243 void machines__destroy_kernel_maps(struct machines *machines); 244 245 size_t machine__fprintf_vmlinux_path(struct machine *machine, FILE *fp); 246 247 int machine__for_each_thread(struct machine *machine, 248 int (*fn)(struct thread *thread, void *p), 249 void *priv); 250 int machines__for_each_thread(struct machines *machines, 251 int (*fn)(struct thread *thread, void *p), 252 void *priv); 253 254 pid_t machine__get_current_tid(struct machine *machine, int cpu); 255 int machine__set_current_tid(struct machine *machine, int cpu, pid_t pid, 256 pid_t tid); 257 /* 258 * For use with libtraceevent's tep_set_function_resolver() 259 */ 260 char *machine__resolve_kernel_addr(void *vmachine, unsigned long long *addrp, char **modp); 261 262 void machine__get_kallsyms_filename(struct machine *machine, char *buf, 263 size_t bufsz); 264 265 int machine__create_extra_kernel_maps(struct machine *machine, 266 struct dso *kernel); 267 268 /* Kernel-space maps for symbols that are outside the main kernel map and module maps */ 269 struct extra_kernel_map { 270 u64 start; 271 u64 end; 272 u64 pgoff; 273 char name[KMAP_NAME_LEN]; 274 }; 275 276 int machine__create_extra_kernel_map(struct machine *machine, 277 struct dso *kernel, 278 struct extra_kernel_map *xm); 279 280 int machine__map_x86_64_entry_trampolines(struct machine *machine, 281 struct dso *kernel); 282 283 #endif /* __PERF_MACHINE_H */ 284