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_cgroup_event(struct machine *machine, 132 union perf_event *event, 133 struct perf_sample *sample); 134 int machine__process_mmap_event(struct machine *machine, union perf_event *event, 135 struct perf_sample *sample); 136 int machine__process_mmap2_event(struct machine *machine, union perf_event *event, 137 struct perf_sample *sample); 138 int machine__process_ksymbol(struct machine *machine, 139 union perf_event *event, 140 struct perf_sample *sample); 141 int machine__process_event(struct machine *machine, union perf_event *event, 142 struct perf_sample *sample); 143 144 typedef void (*machine__process_t)(struct machine *machine, void *data); 145 146 struct machines { 147 struct machine host; 148 struct rb_root_cached guests; 149 }; 150 151 void machines__init(struct machines *machines); 152 void machines__exit(struct machines *machines); 153 154 void machines__process_guests(struct machines *machines, 155 machine__process_t process, void *data); 156 157 struct machine *machines__add(struct machines *machines, pid_t pid, 158 const char *root_dir); 159 struct machine *machines__find_host(struct machines *machines); 160 struct machine *machines__find(struct machines *machines, pid_t pid); 161 struct machine *machines__findnew(struct machines *machines, pid_t pid); 162 163 void machines__set_id_hdr_size(struct machines *machines, u16 id_hdr_size); 164 void machines__set_comm_exec(struct machines *machines, bool comm_exec); 165 166 struct machine *machine__new_host(void); 167 struct machine *machine__new_kallsyms(void); 168 int machine__init(struct machine *machine, const char *root_dir, pid_t pid); 169 void machine__exit(struct machine *machine); 170 void machine__delete_threads(struct machine *machine); 171 void machine__delete(struct machine *machine); 172 void machine__remove_thread(struct machine *machine, struct thread *th); 173 174 struct branch_info *sample__resolve_bstack(struct perf_sample *sample, 175 struct addr_location *al); 176 struct mem_info *sample__resolve_mem(struct perf_sample *sample, 177 struct addr_location *al); 178 179 struct callchain_cursor; 180 181 int thread__resolve_callchain(struct thread *thread, 182 struct callchain_cursor *cursor, 183 struct evsel *evsel, 184 struct perf_sample *sample, 185 struct symbol **parent, 186 struct addr_location *root_al, 187 int max_stack); 188 189 /* 190 * Default guest kernel is defined by parameter --guestkallsyms 191 * and --guestmodules 192 */ 193 static inline bool machine__is_default_guest(struct machine *machine) 194 { 195 return machine ? machine->pid == DEFAULT_GUEST_KERNEL_ID : false; 196 } 197 198 static inline bool machine__is_host(struct machine *machine) 199 { 200 return machine ? machine->pid == HOST_KERNEL_ID : false; 201 } 202 203 bool machine__is(struct machine *machine, const char *arch); 204 int machine__nr_cpus_avail(struct machine *machine); 205 206 struct thread *__machine__findnew_thread(struct machine *machine, pid_t pid, pid_t tid); 207 struct thread *machine__findnew_thread(struct machine *machine, pid_t pid, pid_t tid); 208 209 struct dso *machine__findnew_dso_id(struct machine *machine, const char *filename, struct dso_id *id); 210 struct dso *machine__findnew_dso(struct machine *machine, const char *filename); 211 212 size_t machine__fprintf(struct machine *machine, FILE *fp); 213 214 static inline 215 struct symbol *machine__find_kernel_symbol(struct machine *machine, u64 addr, 216 struct map **mapp) 217 { 218 return maps__find_symbol(&machine->kmaps, addr, mapp); 219 } 220 221 static inline 222 struct symbol *machine__find_kernel_symbol_by_name(struct machine *machine, 223 const char *name, 224 struct map **mapp) 225 { 226 return maps__find_symbol_by_name(&machine->kmaps, name, mapp); 227 } 228 229 int arch__fix_module_text_start(u64 *start, u64 *size, const char *name); 230 231 int machine__load_kallsyms(struct machine *machine, const char *filename); 232 233 int machine__load_vmlinux_path(struct machine *machine); 234 235 size_t machine__fprintf_dsos_buildid(struct machine *machine, FILE *fp, 236 bool (skip)(struct dso *dso, int parm), int parm); 237 size_t machines__fprintf_dsos(struct machines *machines, FILE *fp); 238 size_t machines__fprintf_dsos_buildid(struct machines *machines, FILE *fp, 239 bool (skip)(struct dso *dso, int parm), int parm); 240 241 void machine__destroy_kernel_maps(struct machine *machine); 242 int machine__create_kernel_maps(struct machine *machine); 243 244 int machines__create_kernel_maps(struct machines *machines, pid_t pid); 245 int machines__create_guest_kernel_maps(struct machines *machines); 246 void machines__destroy_kernel_maps(struct machines *machines); 247 248 size_t machine__fprintf_vmlinux_path(struct machine *machine, FILE *fp); 249 250 int machine__for_each_thread(struct machine *machine, 251 int (*fn)(struct thread *thread, void *p), 252 void *priv); 253 int machines__for_each_thread(struct machines *machines, 254 int (*fn)(struct thread *thread, void *p), 255 void *priv); 256 257 pid_t machine__get_current_tid(struct machine *machine, int cpu); 258 int machine__set_current_tid(struct machine *machine, int cpu, pid_t pid, 259 pid_t tid); 260 /* 261 * For use with libtraceevent's tep_set_function_resolver() 262 */ 263 char *machine__resolve_kernel_addr(void *vmachine, unsigned long long *addrp, char **modp); 264 265 void machine__get_kallsyms_filename(struct machine *machine, char *buf, 266 size_t bufsz); 267 268 int machine__create_extra_kernel_maps(struct machine *machine, 269 struct dso *kernel); 270 271 /* Kernel-space maps for symbols that are outside the main kernel map and module maps */ 272 struct extra_kernel_map { 273 u64 start; 274 u64 end; 275 u64 pgoff; 276 char name[KMAP_NAME_LEN]; 277 }; 278 279 int machine__create_extra_kernel_map(struct machine *machine, 280 struct dso *kernel, 281 struct extra_kernel_map *xm); 282 283 int machine__map_x86_64_entry_trampolines(struct machine *machine, 284 struct dso *kernel); 285 286 #endif /* __PERF_MACHINE_H */ 287