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 "dsos.h" 9 #include "rwsem.h" 10 11 struct addr_location; 12 struct branch_stack; 13 struct dso; 14 struct evsel; 15 struct perf_sample; 16 struct symbol; 17 struct target; 18 struct thread; 19 union perf_event; 20 21 /* Native host kernel uses -1 as pid index in machine */ 22 #define HOST_KERNEL_ID (-1) 23 #define DEFAULT_GUEST_KERNEL_ID (0) 24 25 extern const char *ref_reloc_sym_names[]; 26 27 struct vdso_info; 28 29 #define THREADS__TABLE_BITS 8 30 #define THREADS__TABLE_SIZE (1 << THREADS__TABLE_BITS) 31 32 struct threads { 33 struct rb_root_cached entries; 34 struct rw_semaphore lock; 35 unsigned int nr; 36 struct list_head dead; 37 struct thread *last_match; 38 }; 39 40 struct machine { 41 struct rb_node rb_node; 42 pid_t pid; 43 u16 id_hdr_size; 44 bool comm_exec; 45 bool kptr_restrict_warned; 46 bool single_address_space; 47 char *root_dir; 48 char *mmap_name; 49 struct threads threads[THREADS__TABLE_SIZE]; 50 struct vdso_info *vdso_info; 51 struct perf_env *env; 52 struct dsos dsos; 53 struct map_groups kmaps; 54 struct map *vmlinux_map; 55 u64 kernel_start; 56 pid_t *current_tid; 57 union { /* Tool specific area */ 58 void *priv; 59 u64 db_id; 60 }; 61 bool trampolines_mapped; 62 }; 63 64 static inline struct threads *machine__threads(struct machine *machine, pid_t tid) 65 { 66 /* Cast it to handle tid == -1 */ 67 return &machine->threads[(unsigned int)tid % THREADS__TABLE_SIZE]; 68 } 69 70 /* 71 * The main kernel (vmlinux) map 72 */ 73 static inline 74 struct map *machine__kernel_map(struct machine *machine) 75 { 76 return machine->vmlinux_map; 77 } 78 79 /* 80 * kernel (the one returned by machine__kernel_map()) plus kernel modules maps 81 */ 82 static inline 83 struct maps *machine__kernel_maps(struct machine *machine) 84 { 85 return &machine->kmaps.maps; 86 } 87 88 int machine__get_kernel_start(struct machine *machine); 89 90 static inline u64 machine__kernel_start(struct machine *machine) 91 { 92 if (!machine->kernel_start) 93 machine__get_kernel_start(machine); 94 return machine->kernel_start; 95 } 96 97 static inline bool machine__kernel_ip(struct machine *machine, u64 ip) 98 { 99 u64 kernel_start = machine__kernel_start(machine); 100 101 return ip >= kernel_start; 102 } 103 104 u8 machine__addr_cpumode(struct machine *machine, u8 cpumode, u64 addr); 105 106 struct thread *machine__find_thread(struct machine *machine, pid_t pid, 107 pid_t tid); 108 struct comm *machine__thread_exec_comm(struct machine *machine, 109 struct thread *thread); 110 111 int machine__process_comm_event(struct machine *machine, union perf_event *event, 112 struct perf_sample *sample); 113 int machine__process_exit_event(struct machine *machine, union perf_event *event, 114 struct perf_sample *sample); 115 int machine__process_fork_event(struct machine *machine, union perf_event *event, 116 struct perf_sample *sample); 117 int machine__process_lost_event(struct machine *machine, union perf_event *event, 118 struct perf_sample *sample); 119 int machine__process_lost_samples_event(struct machine *machine, union perf_event *event, 120 struct perf_sample *sample); 121 int machine__process_aux_event(struct machine *machine, 122 union perf_event *event); 123 int machine__process_itrace_start_event(struct machine *machine, 124 union perf_event *event); 125 int machine__process_switch_event(struct machine *machine, 126 union perf_event *event); 127 int machine__process_namespaces_event(struct machine *machine, 128 union perf_event *event, 129 struct perf_sample *sample); 130 int machine__process_mmap_event(struct machine *machine, union perf_event *event, 131 struct perf_sample *sample); 132 int machine__process_mmap2_event(struct machine *machine, union perf_event *event, 133 struct perf_sample *sample); 134 int machine__process_ksymbol(struct machine *machine, 135 union perf_event *event, 136 struct perf_sample *sample); 137 int machine__process_event(struct machine *machine, union perf_event *event, 138 struct perf_sample *sample); 139 140 typedef void (*machine__process_t)(struct machine *machine, void *data); 141 142 struct machines { 143 struct machine host; 144 struct rb_root_cached guests; 145 }; 146 147 void machines__init(struct machines *machines); 148 void machines__exit(struct machines *machines); 149 150 void machines__process_guests(struct machines *machines, 151 machine__process_t process, void *data); 152 153 struct machine *machines__add(struct machines *machines, pid_t pid, 154 const char *root_dir); 155 struct machine *machines__find_host(struct machines *machines); 156 struct machine *machines__find(struct machines *machines, pid_t pid); 157 struct machine *machines__findnew(struct machines *machines, pid_t pid); 158 159 void machines__set_id_hdr_size(struct machines *machines, u16 id_hdr_size); 160 void machines__set_comm_exec(struct machines *machines, bool comm_exec); 161 162 struct machine *machine__new_host(void); 163 struct machine *machine__new_kallsyms(void); 164 int machine__init(struct machine *machine, const char *root_dir, pid_t pid); 165 void machine__exit(struct machine *machine); 166 void machine__delete_threads(struct machine *machine); 167 void machine__delete(struct machine *machine); 168 void machine__remove_thread(struct machine *machine, struct thread *th); 169 170 struct branch_info *sample__resolve_bstack(struct perf_sample *sample, 171 struct addr_location *al); 172 struct mem_info *sample__resolve_mem(struct perf_sample *sample, 173 struct addr_location *al); 174 175 struct callchain_cursor; 176 177 int thread__resolve_callchain(struct thread *thread, 178 struct callchain_cursor *cursor, 179 struct evsel *evsel, 180 struct perf_sample *sample, 181 struct symbol **parent, 182 struct addr_location *root_al, 183 int max_stack); 184 185 /* 186 * Default guest kernel is defined by parameter --guestkallsyms 187 * and --guestmodules 188 */ 189 static inline bool machine__is_default_guest(struct machine *machine) 190 { 191 return machine ? machine->pid == DEFAULT_GUEST_KERNEL_ID : false; 192 } 193 194 static inline bool machine__is_host(struct machine *machine) 195 { 196 return machine ? machine->pid == HOST_KERNEL_ID : false; 197 } 198 199 bool machine__is(struct machine *machine, const char *arch); 200 int machine__nr_cpus_avail(struct machine *machine); 201 202 struct thread *__machine__findnew_thread(struct machine *machine, pid_t pid, pid_t tid); 203 struct thread *machine__findnew_thread(struct machine *machine, pid_t pid, pid_t tid); 204 205 struct dso *machine__findnew_dso(struct machine *machine, const char *filename); 206 207 size_t machine__fprintf(struct machine *machine, FILE *fp); 208 209 static inline 210 struct symbol *machine__find_kernel_symbol(struct machine *machine, u64 addr, 211 struct map **mapp) 212 { 213 return map_groups__find_symbol(&machine->kmaps, addr, mapp); 214 } 215 216 static inline 217 struct symbol *machine__find_kernel_symbol_by_name(struct machine *machine, 218 const char *name, 219 struct map **mapp) 220 { 221 return map_groups__find_symbol_by_name(&machine->kmaps, name, mapp); 222 } 223 224 struct map *machine__findnew_module_map(struct machine *machine, u64 start, 225 const char *filename); 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