tools/perf/util/machine.h

   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 #include "threads.h"
  11
  12 struct addr_location;
  13 struct branch_stack;
  14 struct dso;
  15 struct dso_id;
  16 struct evsel;
  17 struct perf_sample;
  18 struct symbol;
  19 struct target;
  20 struct thread;
  21 union perf_event;
  22 struct machines;
  23
  24 /* Native host kernel uses -1 as pid index in machine */
  25 #define HOST_KERNEL_ID                  (-1)
  26 #define DEFAULT_GUEST_KERNEL_ID         (0)
  27
  28 extern const char *ref_reloc_sym_names[];
  29
  30 struct vdso_info;
  31
  32 struct machine {
  33         struct rb_node    rb_node;
  34         pid_t             pid;
  35         u16               id_hdr_size;
  36         bool              comm_exec;
  37         bool              kptr_restrict_warned;
  38         bool              single_address_space;
  39         char              *root_dir;
  40         char              *mmap_name;
  41         char              *kallsyms_filename;
  42         struct threads    threads;
  43         struct vdso_info  *vdso_info;
  44         struct perf_env   *env;
  45         struct dsos       dsos;
  46         struct maps       *kmaps;
  47         struct map        *vmlinux_map;
  48         u64               kernel_start;
  49         struct {
  50                 u64       text_start;
  51                 u64       text_end;
  52         } sched, lock, traceiter, trace;
  53         pid_t             *current_tid;
  54         size_t            current_tid_sz;
  55         union { /* Tool specific area */
  56                 void      *priv;
  57                 u64       db_id;
  58         };
  59         struct machines   *machines;
  60         bool              trampolines_mapped;
  61 };
  62
  63 /*
  64  * The main kernel (vmlinux) map
  65  */
  66 static inline
  67 struct map *machine__kernel_map(struct machine *machine)
  68 {
  69         return machine->vmlinux_map;
  70 }
  71
  72 /*
  73  * kernel (the one returned by machine__kernel_map()) plus kernel modules maps
  74  */
  75 static inline
  76 struct maps *machine__kernel_maps(struct machine *machine)
  77 {
  78         return machine->kmaps;
  79 }
  80
  81 int machine__get_kernel_start(struct machine *machine);
  82
  83 static inline u64 machine__kernel_start(struct machine *machine)
  84 {
  85         if (!machine->kernel_start)
  86                 machine__get_kernel_start(machine);
  87         return machine->kernel_start;
  88 }
  89
  90 static inline bool machine__kernel_ip(struct machine *machine, u64 ip)
  91 {
  92         u64 kernel_start = machine__kernel_start(machine);
  93
  94         return ip >= kernel_start;
  95 }
  96
  97 u8 machine__addr_cpumode(struct machine *machine, u8 cpumode, u64 addr);
  98
  99 struct thread *machine__find_thread(struct machine *machine, pid_t pid,
 100                                     pid_t tid);
 101 struct thread *machine__idle_thread(struct machine *machine);
 102 struct comm *machine__thread_exec_comm(struct machine *machine,
 103                                        struct thread *thread);
 104
 105 int machine__process_comm_event(struct machine *machine, union perf_event *event,
 106                                 struct perf_sample *sample);
 107 int machine__process_exit_event(struct machine *machine, union perf_event *event,
 108                                 struct perf_sample *sample);
 109 int machine__process_fork_event(struct machine *machine, union perf_event *event,
 110                                 struct perf_sample *sample);
 111 int machine__process_lost_event(struct machine *machine, union perf_event *event,
 112                                 struct perf_sample *sample);
 113 int machine__process_lost_samples_event(struct machine *machine, union perf_event *event,
 114                                         struct perf_sample *sample);
 115 int machine__process_aux_event(struct machine *machine,
 116                                union perf_event *event);
 117 int machine__process_itrace_start_event(struct machine *machine,
 118                                         union perf_event *event);
 119 int machine__process_aux_output_hw_id_event(struct machine *machine,
 120                                             union perf_event *event);
 121 int machine__process_switch_event(struct machine *machine,
 122                                   union perf_event *event);
 123 int machine__process_namespaces_event(struct machine *machine,
 124                                       union perf_event *event,
 125                                       struct perf_sample *sample);
 126 int machine__process_cgroup_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_text_poke(struct machine *machine,
 137                                union perf_event *event,
 138                                struct perf_sample *sample);
 139 int machine__process_event(struct machine *machine, union perf_event *event,
 140                                 struct perf_sample *sample);
 141
 142 typedef void (*machine__process_t)(struct machine *machine, void *data);
 143
 144 struct machines {
 145         struct machine host;
 146         struct rb_root_cached guests;
 147 };
 148
 149 void machines__init(struct machines *machines);
 150 void machines__exit(struct machines *machines);
 151
 152 void machines__process_guests(struct machines *machines,
 153                               machine__process_t process, void *data);
 154
 155 struct machine *machines__add(struct machines *machines, pid_t pid,
 156                               const char *root_dir);
 157 struct machine *machines__find(struct machines *machines, pid_t pid);
 158 struct machine *machines__findnew(struct machines *machines, pid_t pid);
 159 struct machine *machines__find_guest(struct machines *machines, pid_t pid);
 160 struct thread *machines__findnew_guest_code(struct machines *machines, pid_t pid);
 161 struct thread *machine__findnew_guest_code(struct machine *machine, 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                                 bool symbols);
 189
 190 static inline int thread__resolve_callchain(struct thread *thread,
 191                                             struct callchain_cursor *cursor,
 192                                             struct evsel *evsel,
 193                                             struct perf_sample *sample,
 194                                             struct symbol **parent,
 195                                             struct addr_location *root_al,
 196                                             int max_stack)
 197 {
 198         return __thread__resolve_callchain(thread,
 199                                            cursor,
 200                                            evsel,
 201                                            sample,
 202                                            parent,
 203                                            root_al,
 204                                            max_stack,
 205                                            /*symbols=*/true);
 206 }
 207
 208 /*
 209  * Default guest kernel is defined by parameter --guestkallsyms
 210  * and --guestmodules
 211  */
 212 static inline bool machine__is_default_guest(struct machine *machine)
 213 {
 214         return machine ? machine->pid == DEFAULT_GUEST_KERNEL_ID : false;
 215 }
 216
 217 static inline bool machine__is_host(struct machine *machine)
 218 {
 219         return machine ? machine->pid == HOST_KERNEL_ID : false;
 220 }
 221
 222 bool machine__is_lock_function(struct machine *machine, u64 addr);
 223 bool machine__is(struct machine *machine, const char *arch);
 224 bool machine__normalized_is(struct machine *machine, const char *arch);
 225 int machine__nr_cpus_avail(struct machine *machine);
 226
 227 struct thread *machine__findnew_thread(struct machine *machine, pid_t pid, pid_t tid);
 228
 229 struct dso *machine__findnew_dso_id(struct machine *machine, const char *filename,
 230                                     const struct dso_id *id);
 231 struct dso *machine__findnew_dso(struct machine *machine, const char *filename);
 232
 233 size_t machine__fprintf(struct machine *machine, FILE *fp);
 234
 235 static inline
 236 struct symbol *machine__find_kernel_symbol(struct machine *machine, u64 addr,
 237                                            struct map **mapp)
 238 {
 239         return maps__find_symbol(machine->kmaps, addr, mapp);
 240 }
 241
 242 static inline
 243 struct symbol *machine__find_kernel_symbol_by_name(struct machine *machine,
 244                                                    const char *name,
 245                                                    struct map **mapp)
 246 {
 247         return maps__find_symbol_by_name(machine->kmaps, name, mapp);
 248 }
 249
 250 int arch__fix_module_text_start(u64 *start, u64 *size, const char *name);
 251
 252 int machine__load_kallsyms(struct machine *machine, const char *filename);
 253
 254 int machine__load_vmlinux_path(struct machine *machine);
 255
 256 size_t machine__fprintf_dsos_buildid(struct machine *machine, FILE *fp,
 257                                      bool (skip)(struct dso *dso, int parm), int parm);
 258 size_t machines__fprintf_dsos(struct machines *machines, FILE *fp);
 259 size_t machines__fprintf_dsos_buildid(struct machines *machines, FILE *fp,
 260                                      bool (skip)(struct dso *dso, int parm), int parm);
 261
 262 void machine__destroy_kernel_maps(struct machine *machine);
 263 int machine__create_kernel_maps(struct machine *machine);
 264
 265 int machines__create_kernel_maps(struct machines *machines, pid_t pid);
 266 int machines__create_guest_kernel_maps(struct machines *machines);
 267 void machines__destroy_kernel_maps(struct machines *machines);
 268
 269 size_t machine__fprintf_vmlinux_path(struct machine *machine, FILE *fp);
 270
 271 typedef int (*machine__dso_t)(struct dso *dso, struct machine *machine, void *priv);
 272
 273 int machine__for_each_dso(struct machine *machine, machine__dso_t fn,
 274                           void *priv);
 275
 276 typedef int (*machine__map_t)(struct map *map, void *priv);
 277 int machine__for_each_kernel_map(struct machine *machine, machine__map_t fn,
 278                                  void *priv);
 279
 280 int machine__for_each_thread(struct machine *machine,
 281                              int (*fn)(struct thread *thread, void *p),
 282                              void *priv);
 283 int machines__for_each_thread(struct machines *machines,
 284                               int (*fn)(struct thread *thread, void *p),
 285                               void *priv);
 286
 287 struct thread_list {
 288         struct list_head         list;
 289         struct thread           *thread;
 290 };
 291
 292 /* Make a list of struct thread_list based on threads in the machine. */
 293 int machine__thread_list(struct machine *machine, struct list_head *list);
 294 /* Free up the nodes within the thread_list list. */
 295 void thread_list__delete(struct list_head *list);
 296
 297 pid_t machine__get_current_tid(struct machine *machine, int cpu);
 298 int machine__set_current_tid(struct machine *machine, int cpu, pid_t pid,
 299                              pid_t tid);
 300 /*
 301  * For use with libtraceevent's tep_set_function_resolver()
 302  */
 303 char *machine__resolve_kernel_addr(void *vmachine, unsigned long long *addrp, char **modp);
 304
 305 void machine__get_kallsyms_filename(struct machine *machine, char *buf,
 306                                     size_t bufsz);
 307
 308 int machine__create_extra_kernel_maps(struct machine *machine,
 309                                       struct dso *kernel);
 310
 311 /* Kernel-space maps for symbols that are outside the main kernel map and module maps */
 312 struct extra_kernel_map {
 313         u64 start;
 314         u64 end;
 315         u64 pgoff;
 316         char name[KMAP_NAME_LEN];
 317 };
 318
 319 int machine__create_extra_kernel_map(struct machine *machine,
 320                                      struct dso *kernel,
 321                                      struct extra_kernel_map *xm);
 322
 323 int machine__map_x86_64_entry_trampolines(struct machine *machine,
 324                                           struct dso *kernel);
 325
 326 int machine__resolve(struct machine *machine, struct addr_location *al,
 327                      struct perf_sample *sample);
 328
 329 int machine__hit_all_dsos(struct machine *machine);
 330
 331 #endif /* __PERF_MACHINE_H */