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_maps[MAP__NR_TYPES]; 53 u64 kernel_start; 54 pid_t *current_tid; 55 union { /* Tool specific area */ 56 void *priv; 57 u64 db_id; 58 }; 59 }; 60 61 static inline struct threads *machine__threads(struct machine *machine, pid_t tid) 62 { 63 /* Cast it to handle tid == -1 */ 64 return &machine->threads[(unsigned int)tid % THREADS__TABLE_SIZE]; 65 } 66 67 static inline 68 struct map *__machine__kernel_map(struct machine *machine, enum map_type type) 69 { 70 return machine->vmlinux_maps[type]; 71 } 72 73 static inline 74 struct map *machine__kernel_map(struct machine *machine) 75 { 76 return __machine__kernel_map(machine, MAP__FUNCTION); 77 } 78 79 int machine__get_kernel_start(struct machine *machine); 80 81 static inline u64 machine__kernel_start(struct machine *machine) 82 { 83 if (!machine->kernel_start) 84 machine__get_kernel_start(machine); 85 return machine->kernel_start; 86 } 87 88 static inline bool machine__kernel_ip(struct machine *machine, u64 ip) 89 { 90 u64 kernel_start = machine__kernel_start(machine); 91 92 return ip >= kernel_start; 93 } 94 95 struct thread *machine__find_thread(struct machine *machine, pid_t pid, 96 pid_t tid); 97 struct comm *machine__thread_exec_comm(struct machine *machine, 98 struct thread *thread); 99 100 int machine__process_comm_event(struct machine *machine, union perf_event *event, 101 struct perf_sample *sample); 102 int machine__process_exit_event(struct machine *machine, union perf_event *event, 103 struct perf_sample *sample); 104 int machine__process_fork_event(struct machine *machine, union perf_event *event, 105 struct perf_sample *sample); 106 int machine__process_lost_event(struct machine *machine, union perf_event *event, 107 struct perf_sample *sample); 108 int machine__process_lost_samples_event(struct machine *machine, union perf_event *event, 109 struct perf_sample *sample); 110 int machine__process_aux_event(struct machine *machine, 111 union perf_event *event); 112 int machine__process_itrace_start_event(struct machine *machine, 113 union perf_event *event); 114 int machine__process_switch_event(struct machine *machine, 115 union perf_event *event); 116 int machine__process_namespaces_event(struct machine *machine, 117 union perf_event *event, 118 struct perf_sample *sample); 119 int machine__process_mmap_event(struct machine *machine, union perf_event *event, 120 struct perf_sample *sample); 121 int machine__process_mmap2_event(struct machine *machine, union perf_event *event, 122 struct perf_sample *sample); 123 int machine__process_event(struct machine *machine, union perf_event *event, 124 struct perf_sample *sample); 125 126 typedef void (*machine__process_t)(struct machine *machine, void *data); 127 128 struct machines { 129 struct machine host; 130 struct rb_root guests; 131 }; 132 133 void machines__init(struct machines *machines); 134 void machines__exit(struct machines *machines); 135 136 void machines__process_guests(struct machines *machines, 137 machine__process_t process, void *data); 138 139 struct machine *machines__add(struct machines *machines, pid_t pid, 140 const char *root_dir); 141 struct machine *machines__find_host(struct machines *machines); 142 struct machine *machines__find(struct machines *machines, pid_t pid); 143 struct machine *machines__findnew(struct machines *machines, pid_t pid); 144 145 void machines__set_id_hdr_size(struct machines *machines, u16 id_hdr_size); 146 void machines__set_comm_exec(struct machines *machines, bool comm_exec); 147 148 struct machine *machine__new_host(void); 149 struct machine *machine__new_kallsyms(void); 150 int machine__init(struct machine *machine, const char *root_dir, pid_t pid); 151 void machine__exit(struct machine *machine); 152 void machine__delete_threads(struct machine *machine); 153 void machine__delete(struct machine *machine); 154 void machine__remove_thread(struct machine *machine, struct thread *th); 155 156 struct branch_info *sample__resolve_bstack(struct perf_sample *sample, 157 struct addr_location *al); 158 struct mem_info *sample__resolve_mem(struct perf_sample *sample, 159 struct addr_location *al); 160 161 struct callchain_cursor; 162 163 int thread__resolve_callchain(struct thread *thread, 164 struct callchain_cursor *cursor, 165 struct perf_evsel *evsel, 166 struct perf_sample *sample, 167 struct symbol **parent, 168 struct addr_location *root_al, 169 int max_stack); 170 171 /* 172 * Default guest kernel is defined by parameter --guestkallsyms 173 * and --guestmodules 174 */ 175 static inline bool machine__is_default_guest(struct machine *machine) 176 { 177 return machine ? machine->pid == DEFAULT_GUEST_KERNEL_ID : false; 178 } 179 180 static inline bool machine__is_host(struct machine *machine) 181 { 182 return machine ? machine->pid == HOST_KERNEL_ID : false; 183 } 184 185 struct thread *__machine__findnew_thread(struct machine *machine, pid_t pid, pid_t tid); 186 struct thread *machine__findnew_thread(struct machine *machine, pid_t pid, pid_t tid); 187 188 struct dso *machine__findnew_dso(struct machine *machine, const char *filename); 189 190 size_t machine__fprintf(struct machine *machine, FILE *fp); 191 192 static inline 193 struct symbol *machine__find_kernel_symbol(struct machine *machine, 194 enum map_type type, u64 addr, 195 struct map **mapp) 196 { 197 return map_groups__find_symbol(&machine->kmaps, type, addr, mapp); 198 } 199 200 static inline 201 struct symbol *machine__find_kernel_symbol_by_name(struct machine *machine, 202 enum map_type type, const char *name, 203 struct map **mapp) 204 { 205 return map_groups__find_symbol_by_name(&machine->kmaps, type, name, mapp); 206 } 207 208 static inline 209 struct symbol *machine__find_kernel_function(struct machine *machine, u64 addr, 210 struct map **mapp) 211 { 212 return machine__find_kernel_symbol(machine, MAP__FUNCTION, addr, 213 mapp); 214 } 215 216 static inline 217 struct symbol *machine__find_kernel_function_by_name(struct machine *machine, 218 const char *name, 219 struct map **mapp) 220 { 221 return map_groups__find_function_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, const char *name); 227 228 int machine__load_kallsyms(struct machine *machine, const char *filename, 229 enum map_type type); 230 int machine__load_vmlinux_path(struct machine *machine, enum map_type type); 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 int __machine__synthesize_threads(struct machine *machine, struct perf_tool *tool, 255 struct target *target, struct thread_map *threads, 256 perf_event__handler_t process, bool data_mmap, 257 unsigned int proc_map_timeout, 258 unsigned int nr_threads_synthesize); 259 static inline 260 int machine__synthesize_threads(struct machine *machine, struct target *target, 261 struct thread_map *threads, bool data_mmap, 262 unsigned int proc_map_timeout, 263 unsigned int nr_threads_synthesize) 264 { 265 return __machine__synthesize_threads(machine, NULL, target, threads, 266 perf_event__process, data_mmap, 267 proc_map_timeout, 268 nr_threads_synthesize); 269 } 270 271 pid_t machine__get_current_tid(struct machine *machine, int cpu); 272 int machine__set_current_tid(struct machine *machine, int cpu, pid_t pid, 273 pid_t tid); 274 /* 275 * For use with libtraceevent's pevent_set_function_resolver() 276 */ 277 char *machine__resolve_kernel_addr(void *vmachine, unsigned long long *addrp, char **modp); 278 279 #endif /* __PERF_MACHINE_H */ 280