1 // SPDX-License-Identifier: GPL-2.0
16 #include "map_symbol.h"
18 #include "mem-events.h"
28 #include <sys/types.h>
32 #include "linux/hash.h"
34 #include "bpf-event.h"
35 #include <internal/lib.h> // page_size
38 #include <linux/ctype.h>
39 #include <symbol/kallsyms.h>
40 #include <linux/mman.h>
41 #include <linux/string.h>
42 #include <linux/zalloc.h>
44 static void __machine__remove_thread(struct machine *machine, struct thread *th, bool lock);
46 static struct dso *machine__kernel_dso(struct machine *machine)
48 return machine->vmlinux_map->dso;
51 static void dsos__init(struct dsos *dsos)
53 INIT_LIST_HEAD(&dsos->head);
55 init_rwsem(&dsos->lock);
58 static void machine__threads_init(struct machine *machine)
62 for (i = 0; i < THREADS__TABLE_SIZE; i++) {
63 struct threads *threads = &machine->threads[i];
64 threads->entries = RB_ROOT_CACHED;
65 init_rwsem(&threads->lock);
67 INIT_LIST_HEAD(&threads->dead);
68 threads->last_match = NULL;
72 static int machine__set_mmap_name(struct machine *machine)
74 if (machine__is_host(machine))
75 machine->mmap_name = strdup("[kernel.kallsyms]");
76 else if (machine__is_default_guest(machine))
77 machine->mmap_name = strdup("[guest.kernel.kallsyms]");
78 else if (asprintf(&machine->mmap_name, "[guest.kernel.kallsyms.%d]",
80 machine->mmap_name = NULL;
82 return machine->mmap_name ? 0 : -ENOMEM;
85 int machine__init(struct machine *machine, const char *root_dir, pid_t pid)
89 memset(machine, 0, sizeof(*machine));
90 maps__init(&machine->kmaps, machine);
91 RB_CLEAR_NODE(&machine->rb_node);
92 dsos__init(&machine->dsos);
94 machine__threads_init(machine);
96 machine->vdso_info = NULL;
101 machine->id_hdr_size = 0;
102 machine->kptr_restrict_warned = false;
103 machine->comm_exec = false;
104 machine->kernel_start = 0;
105 machine->vmlinux_map = NULL;
107 machine->root_dir = strdup(root_dir);
108 if (machine->root_dir == NULL)
111 if (machine__set_mmap_name(machine))
114 if (pid != HOST_KERNEL_ID) {
115 struct thread *thread = machine__findnew_thread(machine, -1,
122 snprintf(comm, sizeof(comm), "[guest/%d]", pid);
123 thread__set_comm(thread, comm, 0);
127 machine->current_tid = NULL;
132 zfree(&machine->root_dir);
133 zfree(&machine->mmap_name);
138 struct machine *machine__new_host(void)
140 struct machine *machine = malloc(sizeof(*machine));
142 if (machine != NULL) {
143 machine__init(machine, "", HOST_KERNEL_ID);
145 if (machine__create_kernel_maps(machine) < 0)
155 struct machine *machine__new_kallsyms(void)
157 struct machine *machine = machine__new_host();
160 * 1) We should switch to machine__load_kallsyms(), i.e. not explicitly
161 * ask for not using the kcore parsing code, once this one is fixed
162 * to create a map per module.
164 if (machine && machine__load_kallsyms(machine, "/proc/kallsyms") <= 0) {
165 machine__delete(machine);
172 static void dsos__purge(struct dsos *dsos)
176 down_write(&dsos->lock);
178 list_for_each_entry_safe(pos, n, &dsos->head, node) {
179 RB_CLEAR_NODE(&pos->rb_node);
181 list_del_init(&pos->node);
185 up_write(&dsos->lock);
188 static void dsos__exit(struct dsos *dsos)
191 exit_rwsem(&dsos->lock);
194 void machine__delete_threads(struct machine *machine)
199 for (i = 0; i < THREADS__TABLE_SIZE; i++) {
200 struct threads *threads = &machine->threads[i];
201 down_write(&threads->lock);
202 nd = rb_first_cached(&threads->entries);
204 struct thread *t = rb_entry(nd, struct thread, rb_node);
207 __machine__remove_thread(machine, t, false);
209 up_write(&threads->lock);
213 void machine__exit(struct machine *machine)
220 machine__destroy_kernel_maps(machine);
221 maps__exit(&machine->kmaps);
222 dsos__exit(&machine->dsos);
223 machine__exit_vdso(machine);
224 zfree(&machine->root_dir);
225 zfree(&machine->mmap_name);
226 zfree(&machine->current_tid);
228 for (i = 0; i < THREADS__TABLE_SIZE; i++) {
229 struct threads *threads = &machine->threads[i];
230 struct thread *thread, *n;
232 * Forget about the dead, at this point whatever threads were
233 * left in the dead lists better have a reference count taken
234 * by who is using them, and then, when they drop those references
235 * and it finally hits zero, thread__put() will check and see that
236 * its not in the dead threads list and will not try to remove it
237 * from there, just calling thread__delete() straight away.
239 list_for_each_entry_safe(thread, n, &threads->dead, node)
240 list_del_init(&thread->node);
242 exit_rwsem(&threads->lock);
246 void machine__delete(struct machine *machine)
249 machine__exit(machine);
254 void machines__init(struct machines *machines)
256 machine__init(&machines->host, "", HOST_KERNEL_ID);
257 machines->guests = RB_ROOT_CACHED;
260 void machines__exit(struct machines *machines)
262 machine__exit(&machines->host);
266 struct machine *machines__add(struct machines *machines, pid_t pid,
267 const char *root_dir)
269 struct rb_node **p = &machines->guests.rb_root.rb_node;
270 struct rb_node *parent = NULL;
271 struct machine *pos, *machine = malloc(sizeof(*machine));
272 bool leftmost = true;
277 if (machine__init(machine, root_dir, pid) != 0) {
284 pos = rb_entry(parent, struct machine, rb_node);
293 rb_link_node(&machine->rb_node, parent, p);
294 rb_insert_color_cached(&machine->rb_node, &machines->guests, leftmost);
299 void machines__set_comm_exec(struct machines *machines, bool comm_exec)
303 machines->host.comm_exec = comm_exec;
305 for (nd = rb_first_cached(&machines->guests); nd; nd = rb_next(nd)) {
306 struct machine *machine = rb_entry(nd, struct machine, rb_node);
308 machine->comm_exec = comm_exec;
312 struct machine *machines__find(struct machines *machines, pid_t pid)
314 struct rb_node **p = &machines->guests.rb_root.rb_node;
315 struct rb_node *parent = NULL;
316 struct machine *machine;
317 struct machine *default_machine = NULL;
319 if (pid == HOST_KERNEL_ID)
320 return &machines->host;
324 machine = rb_entry(parent, struct machine, rb_node);
325 if (pid < machine->pid)
327 else if (pid > machine->pid)
332 default_machine = machine;
335 return default_machine;
338 struct machine *machines__findnew(struct machines *machines, pid_t pid)
341 const char *root_dir = "";
342 struct machine *machine = machines__find(machines, pid);
344 if (machine && (machine->pid == pid))
347 if ((pid != HOST_KERNEL_ID) &&
348 (pid != DEFAULT_GUEST_KERNEL_ID) &&
349 (symbol_conf.guestmount)) {
350 sprintf(path, "%s/%d", symbol_conf.guestmount, pid);
351 if (access(path, R_OK)) {
352 static struct strlist *seen;
355 seen = strlist__new(NULL, NULL);
357 if (!strlist__has_entry(seen, path)) {
358 pr_err("Can't access file %s\n", path);
359 strlist__add(seen, path);
367 machine = machines__add(machines, pid, root_dir);
372 void machines__process_guests(struct machines *machines,
373 machine__process_t process, void *data)
377 for (nd = rb_first_cached(&machines->guests); nd; nd = rb_next(nd)) {
378 struct machine *pos = rb_entry(nd, struct machine, rb_node);
383 void machines__set_id_hdr_size(struct machines *machines, u16 id_hdr_size)
385 struct rb_node *node;
386 struct machine *machine;
388 machines->host.id_hdr_size = id_hdr_size;
390 for (node = rb_first_cached(&machines->guests); node;
391 node = rb_next(node)) {
392 machine = rb_entry(node, struct machine, rb_node);
393 machine->id_hdr_size = id_hdr_size;
399 static void machine__update_thread_pid(struct machine *machine,
400 struct thread *th, pid_t pid)
402 struct thread *leader;
404 if (pid == th->pid_ || pid == -1 || th->pid_ != -1)
409 if (th->pid_ == th->tid)
412 leader = __machine__findnew_thread(machine, th->pid_, th->pid_);
417 leader->maps = maps__new(machine);
422 if (th->maps == leader->maps)
427 * Maps are created from MMAP events which provide the pid and
428 * tid. Consequently there never should be any maps on a thread
429 * with an unknown pid. Just print an error if there are.
431 if (!maps__empty(th->maps))
432 pr_err("Discarding thread maps for %d:%d\n",
437 th->maps = maps__get(leader->maps);
442 pr_err("Failed to join map groups for %d:%d\n", th->pid_, th->tid);
447 * Front-end cache - TID lookups come in blocks,
448 * so most of the time we dont have to look up
451 static struct thread*
452 __threads__get_last_match(struct threads *threads, struct machine *machine,
457 th = threads->last_match;
459 if (th->tid == tid) {
460 machine__update_thread_pid(machine, th, pid);
461 return thread__get(th);
464 threads->last_match = NULL;
470 static struct thread*
471 threads__get_last_match(struct threads *threads, struct machine *machine,
474 struct thread *th = NULL;
476 if (perf_singlethreaded)
477 th = __threads__get_last_match(threads, machine, pid, tid);
483 __threads__set_last_match(struct threads *threads, struct thread *th)
485 threads->last_match = th;
489 threads__set_last_match(struct threads *threads, struct thread *th)
491 if (perf_singlethreaded)
492 __threads__set_last_match(threads, th);
496 * Caller must eventually drop thread->refcnt returned with a successful
497 * lookup/new thread inserted.
499 static struct thread *____machine__findnew_thread(struct machine *machine,
500 struct threads *threads,
501 pid_t pid, pid_t tid,
504 struct rb_node **p = &threads->entries.rb_root.rb_node;
505 struct rb_node *parent = NULL;
507 bool leftmost = true;
509 th = threads__get_last_match(threads, machine, pid, tid);
515 th = rb_entry(parent, struct thread, rb_node);
517 if (th->tid == tid) {
518 threads__set_last_match(threads, th);
519 machine__update_thread_pid(machine, th, pid);
520 return thread__get(th);
534 th = thread__new(pid, tid);
536 rb_link_node(&th->rb_node, parent, p);
537 rb_insert_color_cached(&th->rb_node, &threads->entries, leftmost);
540 * We have to initialize maps separately after rb tree is updated.
542 * The reason is that we call machine__findnew_thread
543 * within thread__init_maps to find the thread
544 * leader and that would screwed the rb tree.
546 if (thread__init_maps(th, machine)) {
547 rb_erase_cached(&th->rb_node, &threads->entries);
548 RB_CLEAR_NODE(&th->rb_node);
553 * It is now in the rbtree, get a ref
556 threads__set_last_match(threads, th);
563 struct thread *__machine__findnew_thread(struct machine *machine, pid_t pid, pid_t tid)
565 return ____machine__findnew_thread(machine, machine__threads(machine, tid), pid, tid, true);
568 struct thread *machine__findnew_thread(struct machine *machine, pid_t pid,
571 struct threads *threads = machine__threads(machine, tid);
574 down_write(&threads->lock);
575 th = __machine__findnew_thread(machine, pid, tid);
576 up_write(&threads->lock);
580 struct thread *machine__find_thread(struct machine *machine, pid_t pid,
583 struct threads *threads = machine__threads(machine, tid);
586 down_read(&threads->lock);
587 th = ____machine__findnew_thread(machine, threads, pid, tid, false);
588 up_read(&threads->lock);
592 struct comm *machine__thread_exec_comm(struct machine *machine,
593 struct thread *thread)
595 if (machine->comm_exec)
596 return thread__exec_comm(thread);
598 return thread__comm(thread);
601 int machine__process_comm_event(struct machine *machine, union perf_event *event,
602 struct perf_sample *sample)
604 struct thread *thread = machine__findnew_thread(machine,
607 bool exec = event->header.misc & PERF_RECORD_MISC_COMM_EXEC;
611 machine->comm_exec = true;
614 perf_event__fprintf_comm(event, stdout);
616 if (thread == NULL ||
617 __thread__set_comm(thread, event->comm.comm, sample->time, exec)) {
618 dump_printf("problem processing PERF_RECORD_COMM, skipping event.\n");
627 int machine__process_namespaces_event(struct machine *machine __maybe_unused,
628 union perf_event *event,
629 struct perf_sample *sample __maybe_unused)
631 struct thread *thread = machine__findnew_thread(machine,
632 event->namespaces.pid,
633 event->namespaces.tid);
636 WARN_ONCE(event->namespaces.nr_namespaces > NR_NAMESPACES,
637 "\nWARNING: kernel seems to support more namespaces than perf"
638 " tool.\nTry updating the perf tool..\n\n");
640 WARN_ONCE(event->namespaces.nr_namespaces < NR_NAMESPACES,
641 "\nWARNING: perf tool seems to support more namespaces than"
642 " the kernel.\nTry updating the kernel..\n\n");
645 perf_event__fprintf_namespaces(event, stdout);
647 if (thread == NULL ||
648 thread__set_namespaces(thread, sample->time, &event->namespaces)) {
649 dump_printf("problem processing PERF_RECORD_NAMESPACES, skipping event.\n");
658 int machine__process_cgroup_event(struct machine *machine,
659 union perf_event *event,
660 struct perf_sample *sample __maybe_unused)
665 perf_event__fprintf_cgroup(event, stdout);
667 cgrp = cgroup__findnew(machine->env, event->cgroup.id, event->cgroup.path);
674 int machine__process_lost_event(struct machine *machine __maybe_unused,
675 union perf_event *event, struct perf_sample *sample __maybe_unused)
677 dump_printf(": id:%" PRI_lu64 ": lost:%" PRI_lu64 "\n",
678 event->lost.id, event->lost.lost);
682 int machine__process_lost_samples_event(struct machine *machine __maybe_unused,
683 union perf_event *event, struct perf_sample *sample)
685 dump_printf(": id:%" PRIu64 ": lost samples :%" PRI_lu64 "\n",
686 sample->id, event->lost_samples.lost);
690 static struct dso *machine__findnew_module_dso(struct machine *machine,
692 const char *filename)
696 down_write(&machine->dsos.lock);
698 dso = __dsos__find(&machine->dsos, m->name, true);
700 dso = __dsos__addnew(&machine->dsos, m->name);
704 dso__set_module_info(dso, m, machine);
705 dso__set_long_name(dso, strdup(filename), true);
706 dso->kernel = DSO_SPACE__KERNEL;
711 up_write(&machine->dsos.lock);
715 int machine__process_aux_event(struct machine *machine __maybe_unused,
716 union perf_event *event)
719 perf_event__fprintf_aux(event, stdout);
723 int machine__process_itrace_start_event(struct machine *machine __maybe_unused,
724 union perf_event *event)
727 perf_event__fprintf_itrace_start(event, stdout);
731 int machine__process_switch_event(struct machine *machine __maybe_unused,
732 union perf_event *event)
735 perf_event__fprintf_switch(event, stdout);
739 static int machine__process_ksymbol_register(struct machine *machine,
740 union perf_event *event,
741 struct perf_sample *sample __maybe_unused)
744 struct map *map = maps__find(&machine->kmaps, event->ksymbol.addr);
747 struct dso *dso = dso__new(event->ksymbol.name);
750 dso->kernel = DSO_SPACE__KERNEL;
751 map = map__new2(0, dso);
759 if (event->ksymbol.ksym_type == PERF_RECORD_KSYMBOL_TYPE_OOL) {
760 map->dso->binary_type = DSO_BINARY_TYPE__OOL;
761 map->dso->data.file_size = event->ksymbol.len;
762 dso__set_loaded(map->dso);
765 map->start = event->ksymbol.addr;
766 map->end = map->start + event->ksymbol.len;
767 maps__insert(&machine->kmaps, map);
768 dso__set_loaded(dso);
770 if (is_bpf_image(event->ksymbol.name)) {
771 dso->binary_type = DSO_BINARY_TYPE__BPF_IMAGE;
772 dso__set_long_name(dso, "", false);
776 sym = symbol__new(map->map_ip(map, map->start),
778 0, 0, event->ksymbol.name);
781 dso__insert_symbol(map->dso, sym);
785 static int machine__process_ksymbol_unregister(struct machine *machine,
786 union perf_event *event,
787 struct perf_sample *sample __maybe_unused)
792 map = maps__find(&machine->kmaps, event->ksymbol.addr);
796 if (map != machine->vmlinux_map)
797 maps__remove(&machine->kmaps, map);
799 sym = dso__find_symbol(map->dso, map->map_ip(map, map->start));
801 dso__delete_symbol(map->dso, sym);
807 int machine__process_ksymbol(struct machine *machine __maybe_unused,
808 union perf_event *event,
809 struct perf_sample *sample)
812 perf_event__fprintf_ksymbol(event, stdout);
814 if (event->ksymbol.flags & PERF_RECORD_KSYMBOL_FLAGS_UNREGISTER)
815 return machine__process_ksymbol_unregister(machine, event,
817 return machine__process_ksymbol_register(machine, event, sample);
820 int machine__process_text_poke(struct machine *machine, union perf_event *event,
821 struct perf_sample *sample __maybe_unused)
823 struct map *map = maps__find(&machine->kmaps, event->text_poke.addr);
824 u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
827 perf_event__fprintf_text_poke(event, machine, stdout);
829 if (!event->text_poke.new_len)
832 if (cpumode != PERF_RECORD_MISC_KERNEL) {
833 pr_debug("%s: unsupported cpumode - ignoring\n", __func__);
837 if (map && map->dso) {
838 u8 *new_bytes = event->text_poke.bytes + event->text_poke.old_len;
842 * Kernel maps might be changed when loading symbols so loading
843 * must be done prior to using kernel maps.
846 ret = dso__data_write_cache_addr(map->dso, map, machine,
847 event->text_poke.addr,
849 event->text_poke.new_len);
850 if (ret != event->text_poke.new_len)
851 pr_debug("Failed to write kernel text poke at %#" PRI_lx64 "\n",
852 event->text_poke.addr);
854 pr_debug("Failed to find kernel text poke address map for %#" PRI_lx64 "\n",
855 event->text_poke.addr);
861 static struct map *machine__addnew_module_map(struct machine *machine, u64 start,
862 const char *filename)
864 struct map *map = NULL;
868 if (kmod_path__parse_name(&m, filename))
871 dso = machine__findnew_module_dso(machine, &m, filename);
875 map = map__new2(start, dso);
879 maps__insert(&machine->kmaps, map);
881 /* Put the map here because maps__insert alread got it */
884 /* put the dso here, corresponding to machine__findnew_module_dso */
890 size_t machines__fprintf_dsos(struct machines *machines, FILE *fp)
893 size_t ret = __dsos__fprintf(&machines->host.dsos.head, fp);
895 for (nd = rb_first_cached(&machines->guests); nd; nd = rb_next(nd)) {
896 struct machine *pos = rb_entry(nd, struct machine, rb_node);
897 ret += __dsos__fprintf(&pos->dsos.head, fp);
903 size_t machine__fprintf_dsos_buildid(struct machine *m, FILE *fp,
904 bool (skip)(struct dso *dso, int parm), int parm)
906 return __dsos__fprintf_buildid(&m->dsos.head, fp, skip, parm);
909 size_t machines__fprintf_dsos_buildid(struct machines *machines, FILE *fp,
910 bool (skip)(struct dso *dso, int parm), int parm)
913 size_t ret = machine__fprintf_dsos_buildid(&machines->host, fp, skip, parm);
915 for (nd = rb_first_cached(&machines->guests); nd; nd = rb_next(nd)) {
916 struct machine *pos = rb_entry(nd, struct machine, rb_node);
917 ret += machine__fprintf_dsos_buildid(pos, fp, skip, parm);
922 size_t machine__fprintf_vmlinux_path(struct machine *machine, FILE *fp)
926 struct dso *kdso = machine__kernel_dso(machine);
928 if (kdso->has_build_id) {
929 char filename[PATH_MAX];
930 if (dso__build_id_filename(kdso, filename, sizeof(filename),
932 printed += fprintf(fp, "[0] %s\n", filename);
935 for (i = 0; i < vmlinux_path__nr_entries; ++i)
936 printed += fprintf(fp, "[%d] %s\n",
937 i + kdso->has_build_id, vmlinux_path[i]);
942 size_t machine__fprintf(struct machine *machine, FILE *fp)
948 for (i = 0; i < THREADS__TABLE_SIZE; i++) {
949 struct threads *threads = &machine->threads[i];
951 down_read(&threads->lock);
953 ret = fprintf(fp, "Threads: %u\n", threads->nr);
955 for (nd = rb_first_cached(&threads->entries); nd;
957 struct thread *pos = rb_entry(nd, struct thread, rb_node);
959 ret += thread__fprintf(pos, fp);
962 up_read(&threads->lock);
967 static struct dso *machine__get_kernel(struct machine *machine)
969 const char *vmlinux_name = machine->mmap_name;
972 if (machine__is_host(machine)) {
973 if (symbol_conf.vmlinux_name)
974 vmlinux_name = symbol_conf.vmlinux_name;
976 kernel = machine__findnew_kernel(machine, vmlinux_name,
977 "[kernel]", DSO_SPACE__KERNEL);
979 if (symbol_conf.default_guest_vmlinux_name)
980 vmlinux_name = symbol_conf.default_guest_vmlinux_name;
982 kernel = machine__findnew_kernel(machine, vmlinux_name,
984 DSO_SPACE__KERNEL_GUEST);
987 if (kernel != NULL && (!kernel->has_build_id))
988 dso__read_running_kernel_build_id(kernel, machine);
993 struct process_args {
997 void machine__get_kallsyms_filename(struct machine *machine, char *buf,
1000 if (machine__is_default_guest(machine))
1001 scnprintf(buf, bufsz, "%s", symbol_conf.default_guest_kallsyms);
1003 scnprintf(buf, bufsz, "%s/proc/kallsyms", machine->root_dir);
1006 const char *ref_reloc_sym_names[] = {"_text", "_stext", NULL};
1008 /* Figure out the start address of kernel map from /proc/kallsyms.
1009 * Returns the name of the start symbol in *symbol_name. Pass in NULL as
1010 * symbol_name if it's not that important.
1012 static int machine__get_running_kernel_start(struct machine *machine,
1013 const char **symbol_name,
1014 u64 *start, u64 *end)
1016 char filename[PATH_MAX];
1021 machine__get_kallsyms_filename(machine, filename, PATH_MAX);
1023 if (symbol__restricted_filename(filename, "/proc/kallsyms"))
1026 for (i = 0; (name = ref_reloc_sym_names[i]) != NULL; i++) {
1027 err = kallsyms__get_function_start(filename, name, &addr);
1036 *symbol_name = name;
1040 err = kallsyms__get_function_start(filename, "_etext", &addr);
1047 int machine__create_extra_kernel_map(struct machine *machine,
1049 struct extra_kernel_map *xm)
1054 map = map__new2(xm->start, kernel);
1059 map->pgoff = xm->pgoff;
1061 kmap = map__kmap(map);
1063 strlcpy(kmap->name, xm->name, KMAP_NAME_LEN);
1065 maps__insert(&machine->kmaps, map);
1067 pr_debug2("Added extra kernel map %s %" PRIx64 "-%" PRIx64 "\n",
1068 kmap->name, map->start, map->end);
1075 static u64 find_entry_trampoline(struct dso *dso)
1077 /* Duplicates are removed so lookup all aliases */
1078 const char *syms[] = {
1079 "_entry_trampoline",
1080 "__entry_trampoline_start",
1081 "entry_SYSCALL_64_trampoline",
1083 struct symbol *sym = dso__first_symbol(dso);
1086 for (; sym; sym = dso__next_symbol(sym)) {
1087 if (sym->binding != STB_GLOBAL)
1089 for (i = 0; i < ARRAY_SIZE(syms); i++) {
1090 if (!strcmp(sym->name, syms[i]))
1099 * These values can be used for kernels that do not have symbols for the entry
1100 * trampolines in kallsyms.
1102 #define X86_64_CPU_ENTRY_AREA_PER_CPU 0xfffffe0000000000ULL
1103 #define X86_64_CPU_ENTRY_AREA_SIZE 0x2c000
1104 #define X86_64_ENTRY_TRAMPOLINE 0x6000
1106 /* Map x86_64 PTI entry trampolines */
1107 int machine__map_x86_64_entry_trampolines(struct machine *machine,
1110 struct maps *kmaps = &machine->kmaps;
1111 int nr_cpus_avail, cpu;
1117 * In the vmlinux case, pgoff is a virtual address which must now be
1118 * mapped to a vmlinux offset.
1120 maps__for_each_entry(kmaps, map) {
1121 struct kmap *kmap = __map__kmap(map);
1122 struct map *dest_map;
1124 if (!kmap || !is_entry_trampoline(kmap->name))
1127 dest_map = maps__find(kmaps, map->pgoff);
1128 if (dest_map != map)
1129 map->pgoff = dest_map->map_ip(dest_map, map->pgoff);
1132 if (found || machine->trampolines_mapped)
1135 pgoff = find_entry_trampoline(kernel);
1139 nr_cpus_avail = machine__nr_cpus_avail(machine);
1141 /* Add a 1 page map for each CPU's entry trampoline */
1142 for (cpu = 0; cpu < nr_cpus_avail; cpu++) {
1143 u64 va = X86_64_CPU_ENTRY_AREA_PER_CPU +
1144 cpu * X86_64_CPU_ENTRY_AREA_SIZE +
1145 X86_64_ENTRY_TRAMPOLINE;
1146 struct extra_kernel_map xm = {
1148 .end = va + page_size,
1152 strlcpy(xm.name, ENTRY_TRAMPOLINE_NAME, KMAP_NAME_LEN);
1154 if (machine__create_extra_kernel_map(machine, kernel, &xm) < 0)
1158 machine->trampolines_mapped = nr_cpus_avail;
1163 int __weak machine__create_extra_kernel_maps(struct machine *machine __maybe_unused,
1164 struct dso *kernel __maybe_unused)
1170 __machine__create_kernel_maps(struct machine *machine, struct dso *kernel)
1172 /* In case of renewal the kernel map, destroy previous one */
1173 machine__destroy_kernel_maps(machine);
1175 machine->vmlinux_map = map__new2(0, kernel);
1176 if (machine->vmlinux_map == NULL)
1179 machine->vmlinux_map->map_ip = machine->vmlinux_map->unmap_ip = identity__map_ip;
1180 maps__insert(&machine->kmaps, machine->vmlinux_map);
1184 void machine__destroy_kernel_maps(struct machine *machine)
1187 struct map *map = machine__kernel_map(machine);
1192 kmap = map__kmap(map);
1193 maps__remove(&machine->kmaps, map);
1194 if (kmap && kmap->ref_reloc_sym) {
1195 zfree((char **)&kmap->ref_reloc_sym->name);
1196 zfree(&kmap->ref_reloc_sym);
1199 map__zput(machine->vmlinux_map);
1202 int machines__create_guest_kernel_maps(struct machines *machines)
1205 struct dirent **namelist = NULL;
1207 char path[PATH_MAX];
1211 if (symbol_conf.default_guest_vmlinux_name ||
1212 symbol_conf.default_guest_modules ||
1213 symbol_conf.default_guest_kallsyms) {
1214 machines__create_kernel_maps(machines, DEFAULT_GUEST_KERNEL_ID);
1217 if (symbol_conf.guestmount) {
1218 items = scandir(symbol_conf.guestmount, &namelist, NULL, NULL);
1221 for (i = 0; i < items; i++) {
1222 if (!isdigit(namelist[i]->d_name[0])) {
1223 /* Filter out . and .. */
1226 pid = (pid_t)strtol(namelist[i]->d_name, &endp, 10);
1227 if ((*endp != '\0') ||
1228 (endp == namelist[i]->d_name) ||
1229 (errno == ERANGE)) {
1230 pr_debug("invalid directory (%s). Skipping.\n",
1231 namelist[i]->d_name);
1234 sprintf(path, "%s/%s/proc/kallsyms",
1235 symbol_conf.guestmount,
1236 namelist[i]->d_name);
1237 ret = access(path, R_OK);
1239 pr_debug("Can't access file %s\n", path);
1242 machines__create_kernel_maps(machines, pid);
1251 void machines__destroy_kernel_maps(struct machines *machines)
1253 struct rb_node *next = rb_first_cached(&machines->guests);
1255 machine__destroy_kernel_maps(&machines->host);
1258 struct machine *pos = rb_entry(next, struct machine, rb_node);
1260 next = rb_next(&pos->rb_node);
1261 rb_erase_cached(&pos->rb_node, &machines->guests);
1262 machine__delete(pos);
1266 int machines__create_kernel_maps(struct machines *machines, pid_t pid)
1268 struct machine *machine = machines__findnew(machines, pid);
1270 if (machine == NULL)
1273 return machine__create_kernel_maps(machine);
1276 int machine__load_kallsyms(struct machine *machine, const char *filename)
1278 struct map *map = machine__kernel_map(machine);
1279 int ret = __dso__load_kallsyms(map->dso, filename, map, true);
1282 dso__set_loaded(map->dso);
1284 * Since /proc/kallsyms will have multiple sessions for the
1285 * kernel, with modules between them, fixup the end of all
1288 maps__fixup_end(&machine->kmaps);
1294 int machine__load_vmlinux_path(struct machine *machine)
1296 struct map *map = machine__kernel_map(machine);
1297 int ret = dso__load_vmlinux_path(map->dso, map);
1300 dso__set_loaded(map->dso);
1305 static char *get_kernel_version(const char *root_dir)
1307 char version[PATH_MAX];
1310 const char *prefix = "Linux version ";
1312 sprintf(version, "%s/proc/version", root_dir);
1313 file = fopen(version, "r");
1317 tmp = fgets(version, sizeof(version), file);
1322 name = strstr(version, prefix);
1325 name += strlen(prefix);
1326 tmp = strchr(name, ' ');
1330 return strdup(name);
1333 static bool is_kmod_dso(struct dso *dso)
1335 return dso->symtab_type == DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE ||
1336 dso->symtab_type == DSO_BINARY_TYPE__GUEST_KMODULE;
1339 static int maps__set_module_path(struct maps *maps, const char *path, struct kmod_path *m)
1342 struct map *map = maps__find_by_name(maps, m->name);
1347 long_name = strdup(path);
1348 if (long_name == NULL)
1351 dso__set_long_name(map->dso, long_name, true);
1352 dso__kernel_module_get_build_id(map->dso, "");
1355 * Full name could reveal us kmod compression, so
1356 * we need to update the symtab_type if needed.
1358 if (m->comp && is_kmod_dso(map->dso)) {
1359 map->dso->symtab_type++;
1360 map->dso->comp = m->comp;
1366 static int maps__set_modules_path_dir(struct maps *maps, const char *dir_name, int depth)
1368 struct dirent *dent;
1369 DIR *dir = opendir(dir_name);
1373 pr_debug("%s: cannot open %s dir\n", __func__, dir_name);
1377 while ((dent = readdir(dir)) != NULL) {
1378 char path[PATH_MAX];
1381 /*sshfs might return bad dent->d_type, so we have to stat*/
1382 snprintf(path, sizeof(path), "%s/%s", dir_name, dent->d_name);
1383 if (stat(path, &st))
1386 if (S_ISDIR(st.st_mode)) {
1387 if (!strcmp(dent->d_name, ".") ||
1388 !strcmp(dent->d_name, ".."))
1391 /* Do not follow top-level source and build symlinks */
1393 if (!strcmp(dent->d_name, "source") ||
1394 !strcmp(dent->d_name, "build"))
1398 ret = maps__set_modules_path_dir(maps, path, depth + 1);
1404 ret = kmod_path__parse_name(&m, dent->d_name);
1409 ret = maps__set_module_path(maps, path, &m);
1423 static int machine__set_modules_path(struct machine *machine)
1426 char modules_path[PATH_MAX];
1428 version = get_kernel_version(machine->root_dir);
1432 snprintf(modules_path, sizeof(modules_path), "%s/lib/modules/%s",
1433 machine->root_dir, version);
1436 return maps__set_modules_path_dir(&machine->kmaps, modules_path, 0);
1438 int __weak arch__fix_module_text_start(u64 *start __maybe_unused,
1439 u64 *size __maybe_unused,
1440 const char *name __maybe_unused)
1445 static int machine__create_module(void *arg, const char *name, u64 start,
1448 struct machine *machine = arg;
1451 if (arch__fix_module_text_start(&start, &size, name) < 0)
1454 map = machine__addnew_module_map(machine, start, name);
1457 map->end = start + size;
1459 dso__kernel_module_get_build_id(map->dso, machine->root_dir);
1464 static int machine__create_modules(struct machine *machine)
1466 const char *modules;
1467 char path[PATH_MAX];
1469 if (machine__is_default_guest(machine)) {
1470 modules = symbol_conf.default_guest_modules;
1472 snprintf(path, PATH_MAX, "%s/proc/modules", machine->root_dir);
1476 if (symbol__restricted_filename(modules, "/proc/modules"))
1479 if (modules__parse(modules, machine, machine__create_module))
1482 if (!machine__set_modules_path(machine))
1485 pr_debug("Problems setting modules path maps, continuing anyway...\n");
1490 static void machine__set_kernel_mmap(struct machine *machine,
1493 machine->vmlinux_map->start = start;
1494 machine->vmlinux_map->end = end;
1496 * Be a bit paranoid here, some perf.data file came with
1497 * a zero sized synthesized MMAP event for the kernel.
1499 if (start == 0 && end == 0)
1500 machine->vmlinux_map->end = ~0ULL;
1503 static void machine__update_kernel_mmap(struct machine *machine,
1506 struct map *map = machine__kernel_map(machine);
1509 maps__remove(&machine->kmaps, map);
1511 machine__set_kernel_mmap(machine, start, end);
1513 maps__insert(&machine->kmaps, map);
1517 int machine__create_kernel_maps(struct machine *machine)
1519 struct dso *kernel = machine__get_kernel(machine);
1520 const char *name = NULL;
1522 u64 start = 0, end = ~0ULL;
1528 ret = __machine__create_kernel_maps(machine, kernel);
1532 if (symbol_conf.use_modules && machine__create_modules(machine) < 0) {
1533 if (machine__is_host(machine))
1534 pr_debug("Problems creating module maps, "
1535 "continuing anyway...\n");
1537 pr_debug("Problems creating module maps for guest %d, "
1538 "continuing anyway...\n", machine->pid);
1541 if (!machine__get_running_kernel_start(machine, &name, &start, &end)) {
1543 map__set_kallsyms_ref_reloc_sym(machine->vmlinux_map, name, start)) {
1544 machine__destroy_kernel_maps(machine);
1550 * we have a real start address now, so re-order the kmaps
1551 * assume it's the last in the kmaps
1553 machine__update_kernel_mmap(machine, start, end);
1556 if (machine__create_extra_kernel_maps(machine, kernel))
1557 pr_debug("Problems creating extra kernel maps, continuing anyway...\n");
1560 /* update end address of the kernel map using adjacent module address */
1561 map = map__next(machine__kernel_map(machine));
1563 machine__set_kernel_mmap(machine, start, map->start);
1571 static bool machine__uses_kcore(struct machine *machine)
1575 list_for_each_entry(dso, &machine->dsos.head, node) {
1576 if (dso__is_kcore(dso))
1583 static bool perf_event__is_extra_kernel_mmap(struct machine *machine,
1584 struct extra_kernel_map *xm)
1586 return machine__is(machine, "x86_64") &&
1587 is_entry_trampoline(xm->name);
1590 static int machine__process_extra_kernel_map(struct machine *machine,
1591 struct extra_kernel_map *xm)
1593 struct dso *kernel = machine__kernel_dso(machine);
1598 return machine__create_extra_kernel_map(machine, kernel, xm);
1601 static int machine__process_kernel_mmap_event(struct machine *machine,
1602 struct extra_kernel_map *xm)
1605 enum dso_space_type dso_space;
1606 bool is_kernel_mmap;
1608 /* If we have maps from kcore then we do not need or want any others */
1609 if (machine__uses_kcore(machine))
1612 if (machine__is_host(machine))
1613 dso_space = DSO_SPACE__KERNEL;
1615 dso_space = DSO_SPACE__KERNEL_GUEST;
1617 is_kernel_mmap = memcmp(xm->name, machine->mmap_name,
1618 strlen(machine->mmap_name) - 1) == 0;
1619 if (xm->name[0] == '/' ||
1620 (!is_kernel_mmap && xm->name[0] == '[')) {
1621 map = machine__addnew_module_map(machine, xm->start,
1626 map->end = map->start + xm->end - xm->start;
1627 } else if (is_kernel_mmap) {
1628 const char *symbol_name = (xm->name + strlen(machine->mmap_name));
1630 * Should be there already, from the build-id table in
1633 struct dso *kernel = NULL;
1636 down_read(&machine->dsos.lock);
1638 list_for_each_entry(dso, &machine->dsos.head, node) {
1641 * The cpumode passed to is_kernel_module is not the
1642 * cpumode of *this* event. If we insist on passing
1643 * correct cpumode to is_kernel_module, we should
1644 * record the cpumode when we adding this dso to the
1647 * However we don't really need passing correct
1648 * cpumode. We know the correct cpumode must be kernel
1649 * mode (if not, we should not link it onto kernel_dsos
1652 * Therefore, we pass PERF_RECORD_MISC_CPUMODE_UNKNOWN.
1653 * is_kernel_module() treats it as a kernel cpumode.
1657 is_kernel_module(dso->long_name,
1658 PERF_RECORD_MISC_CPUMODE_UNKNOWN))
1666 up_read(&machine->dsos.lock);
1669 kernel = machine__findnew_dso(machine, machine->mmap_name);
1673 kernel->kernel = dso_space;
1674 if (__machine__create_kernel_maps(machine, kernel) < 0) {
1679 if (strstr(kernel->long_name, "vmlinux"))
1680 dso__set_short_name(kernel, "[kernel.vmlinux]", false);
1682 machine__update_kernel_mmap(machine, xm->start, xm->end);
1685 * Avoid using a zero address (kptr_restrict) for the ref reloc
1686 * symbol. Effectively having zero here means that at record
1687 * time /proc/sys/kernel/kptr_restrict was non zero.
1689 if (xm->pgoff != 0) {
1690 map__set_kallsyms_ref_reloc_sym(machine->vmlinux_map,
1695 if (machine__is_default_guest(machine)) {
1697 * preload dso of guest kernel and modules
1699 dso__load(kernel, machine__kernel_map(machine));
1701 } else if (perf_event__is_extra_kernel_mmap(machine, xm)) {
1702 return machine__process_extra_kernel_map(machine, xm);
1709 int machine__process_mmap2_event(struct machine *machine,
1710 union perf_event *event,
1711 struct perf_sample *sample)
1713 struct thread *thread;
1715 struct dso_id dso_id = {
1716 .maj = event->mmap2.maj,
1717 .min = event->mmap2.min,
1718 .ino = event->mmap2.ino,
1719 .ino_generation = event->mmap2.ino_generation,
1724 perf_event__fprintf_mmap2(event, stdout);
1726 if (sample->cpumode == PERF_RECORD_MISC_GUEST_KERNEL ||
1727 sample->cpumode == PERF_RECORD_MISC_KERNEL) {
1728 struct extra_kernel_map xm = {
1729 .start = event->mmap2.start,
1730 .end = event->mmap2.start + event->mmap2.len,
1731 .pgoff = event->mmap2.pgoff,
1734 strlcpy(xm.name, event->mmap2.filename, KMAP_NAME_LEN);
1735 ret = machine__process_kernel_mmap_event(machine, &xm);
1741 thread = machine__findnew_thread(machine, event->mmap2.pid,
1746 map = map__new(machine, event->mmap2.start,
1747 event->mmap2.len, event->mmap2.pgoff,
1748 &dso_id, event->mmap2.prot,
1750 event->mmap2.filename, thread);
1753 goto out_problem_map;
1755 ret = thread__insert_map(thread, map);
1757 goto out_problem_insert;
1759 thread__put(thread);
1766 thread__put(thread);
1768 dump_printf("problem processing PERF_RECORD_MMAP2, skipping event.\n");
1772 int machine__process_mmap_event(struct machine *machine, union perf_event *event,
1773 struct perf_sample *sample)
1775 struct thread *thread;
1781 perf_event__fprintf_mmap(event, stdout);
1783 if (sample->cpumode == PERF_RECORD_MISC_GUEST_KERNEL ||
1784 sample->cpumode == PERF_RECORD_MISC_KERNEL) {
1785 struct extra_kernel_map xm = {
1786 .start = event->mmap.start,
1787 .end = event->mmap.start + event->mmap.len,
1788 .pgoff = event->mmap.pgoff,
1791 strlcpy(xm.name, event->mmap.filename, KMAP_NAME_LEN);
1792 ret = machine__process_kernel_mmap_event(machine, &xm);
1798 thread = machine__findnew_thread(machine, event->mmap.pid,
1803 if (!(event->header.misc & PERF_RECORD_MISC_MMAP_DATA))
1806 map = map__new(machine, event->mmap.start,
1807 event->mmap.len, event->mmap.pgoff,
1808 NULL, prot, 0, event->mmap.filename, thread);
1811 goto out_problem_map;
1813 ret = thread__insert_map(thread, map);
1815 goto out_problem_insert;
1817 thread__put(thread);
1824 thread__put(thread);
1826 dump_printf("problem processing PERF_RECORD_MMAP, skipping event.\n");
1830 static void __machine__remove_thread(struct machine *machine, struct thread *th, bool lock)
1832 struct threads *threads = machine__threads(machine, th->tid);
1834 if (threads->last_match == th)
1835 threads__set_last_match(threads, NULL);
1838 down_write(&threads->lock);
1840 BUG_ON(refcount_read(&th->refcnt) == 0);
1842 rb_erase_cached(&th->rb_node, &threads->entries);
1843 RB_CLEAR_NODE(&th->rb_node);
1846 * Move it first to the dead_threads list, then drop the reference,
1847 * if this is the last reference, then the thread__delete destructor
1848 * will be called and we will remove it from the dead_threads list.
1850 list_add_tail(&th->node, &threads->dead);
1853 * We need to do the put here because if this is the last refcount,
1854 * then we will be touching the threads->dead head when removing the
1860 up_write(&threads->lock);
1863 void machine__remove_thread(struct machine *machine, struct thread *th)
1865 return __machine__remove_thread(machine, th, true);
1868 int machine__process_fork_event(struct machine *machine, union perf_event *event,
1869 struct perf_sample *sample)
1871 struct thread *thread = machine__find_thread(machine,
1874 struct thread *parent = machine__findnew_thread(machine,
1877 bool do_maps_clone = true;
1881 perf_event__fprintf_task(event, stdout);
1884 * There may be an existing thread that is not actually the parent,
1885 * either because we are processing events out of order, or because the
1886 * (fork) event that would have removed the thread was lost. Assume the
1887 * latter case and continue on as best we can.
1889 if (parent->pid_ != (pid_t)event->fork.ppid) {
1890 dump_printf("removing erroneous parent thread %d/%d\n",
1891 parent->pid_, parent->tid);
1892 machine__remove_thread(machine, parent);
1893 thread__put(parent);
1894 parent = machine__findnew_thread(machine, event->fork.ppid,
1898 /* if a thread currently exists for the thread id remove it */
1899 if (thread != NULL) {
1900 machine__remove_thread(machine, thread);
1901 thread__put(thread);
1904 thread = machine__findnew_thread(machine, event->fork.pid,
1907 * When synthesizing FORK events, we are trying to create thread
1908 * objects for the already running tasks on the machine.
1910 * Normally, for a kernel FORK event, we want to clone the parent's
1911 * maps because that is what the kernel just did.
1913 * But when synthesizing, this should not be done. If we do, we end up
1914 * with overlapping maps as we process the sythesized MMAP2 events that
1915 * get delivered shortly thereafter.
1917 * Use the FORK event misc flags in an internal way to signal this
1918 * situation, so we can elide the map clone when appropriate.
1920 if (event->fork.header.misc & PERF_RECORD_MISC_FORK_EXEC)
1921 do_maps_clone = false;
1923 if (thread == NULL || parent == NULL ||
1924 thread__fork(thread, parent, sample->time, do_maps_clone) < 0) {
1925 dump_printf("problem processing PERF_RECORD_FORK, skipping event.\n");
1928 thread__put(thread);
1929 thread__put(parent);
1934 int machine__process_exit_event(struct machine *machine, union perf_event *event,
1935 struct perf_sample *sample __maybe_unused)
1937 struct thread *thread = machine__find_thread(machine,
1942 perf_event__fprintf_task(event, stdout);
1944 if (thread != NULL) {
1945 thread__exited(thread);
1946 thread__put(thread);
1952 int machine__process_event(struct machine *machine, union perf_event *event,
1953 struct perf_sample *sample)
1957 switch (event->header.type) {
1958 case PERF_RECORD_COMM:
1959 ret = machine__process_comm_event(machine, event, sample); break;
1960 case PERF_RECORD_MMAP:
1961 ret = machine__process_mmap_event(machine, event, sample); break;
1962 case PERF_RECORD_NAMESPACES:
1963 ret = machine__process_namespaces_event(machine, event, sample); break;
1964 case PERF_RECORD_CGROUP:
1965 ret = machine__process_cgroup_event(machine, event, sample); break;
1966 case PERF_RECORD_MMAP2:
1967 ret = machine__process_mmap2_event(machine, event, sample); break;
1968 case PERF_RECORD_FORK:
1969 ret = machine__process_fork_event(machine, event, sample); break;
1970 case PERF_RECORD_EXIT:
1971 ret = machine__process_exit_event(machine, event, sample); break;
1972 case PERF_RECORD_LOST:
1973 ret = machine__process_lost_event(machine, event, sample); break;
1974 case PERF_RECORD_AUX:
1975 ret = machine__process_aux_event(machine, event); break;
1976 case PERF_RECORD_ITRACE_START:
1977 ret = machine__process_itrace_start_event(machine, event); break;
1978 case PERF_RECORD_LOST_SAMPLES:
1979 ret = machine__process_lost_samples_event(machine, event, sample); break;
1980 case PERF_RECORD_SWITCH:
1981 case PERF_RECORD_SWITCH_CPU_WIDE:
1982 ret = machine__process_switch_event(machine, event); break;
1983 case PERF_RECORD_KSYMBOL:
1984 ret = machine__process_ksymbol(machine, event, sample); break;
1985 case PERF_RECORD_BPF_EVENT:
1986 ret = machine__process_bpf(machine, event, sample); break;
1987 case PERF_RECORD_TEXT_POKE:
1988 ret = machine__process_text_poke(machine, event, sample); break;
1997 static bool symbol__match_regex(struct symbol *sym, regex_t *regex)
1999 if (!regexec(regex, sym->name, 0, NULL, 0))
2004 static void ip__resolve_ams(struct thread *thread,
2005 struct addr_map_symbol *ams,
2008 struct addr_location al;
2010 memset(&al, 0, sizeof(al));
2012 * We cannot use the header.misc hint to determine whether a
2013 * branch stack address is user, kernel, guest, hypervisor.
2014 * Branches may straddle the kernel/user/hypervisor boundaries.
2015 * Thus, we have to try consecutively until we find a match
2016 * or else, the symbol is unknown
2018 thread__find_cpumode_addr_location(thread, ip, &al);
2021 ams->al_addr = al.addr;
2022 ams->ms.maps = al.maps;
2023 ams->ms.sym = al.sym;
2024 ams->ms.map = al.map;
2026 ams->data_page_size = 0;
2029 static void ip__resolve_data(struct thread *thread,
2030 u8 m, struct addr_map_symbol *ams,
2031 u64 addr, u64 phys_addr, u64 daddr_page_size)
2033 struct addr_location al;
2035 memset(&al, 0, sizeof(al));
2037 thread__find_symbol(thread, m, addr, &al);
2040 ams->al_addr = al.addr;
2041 ams->ms.maps = al.maps;
2042 ams->ms.sym = al.sym;
2043 ams->ms.map = al.map;
2044 ams->phys_addr = phys_addr;
2045 ams->data_page_size = daddr_page_size;
2048 struct mem_info *sample__resolve_mem(struct perf_sample *sample,
2049 struct addr_location *al)
2051 struct mem_info *mi = mem_info__new();
2056 ip__resolve_ams(al->thread, &mi->iaddr, sample->ip);
2057 ip__resolve_data(al->thread, al->cpumode, &mi->daddr,
2058 sample->addr, sample->phys_addr,
2059 sample->data_page_size);
2060 mi->data_src.val = sample->data_src;
2065 static char *callchain_srcline(struct map_symbol *ms, u64 ip)
2067 struct map *map = ms->map;
2068 char *srcline = NULL;
2070 if (!map || callchain_param.key == CCKEY_FUNCTION)
2073 srcline = srcline__tree_find(&map->dso->srclines, ip);
2075 bool show_sym = false;
2076 bool show_addr = callchain_param.key == CCKEY_ADDRESS;
2078 srcline = get_srcline(map->dso, map__rip_2objdump(map, ip),
2079 ms->sym, show_sym, show_addr, ip);
2080 srcline__tree_insert(&map->dso->srclines, ip, srcline);
2091 static int add_callchain_ip(struct thread *thread,
2092 struct callchain_cursor *cursor,
2093 struct symbol **parent,
2094 struct addr_location *root_al,
2098 struct branch_flags *flags,
2099 struct iterations *iter,
2102 struct map_symbol ms;
2103 struct addr_location al;
2104 int nr_loop_iter = 0;
2105 u64 iter_cycles = 0;
2106 const char *srcline = NULL;
2111 thread__find_cpumode_addr_location(thread, ip, &al);
2113 if (ip >= PERF_CONTEXT_MAX) {
2115 case PERF_CONTEXT_HV:
2116 *cpumode = PERF_RECORD_MISC_HYPERVISOR;
2118 case PERF_CONTEXT_KERNEL:
2119 *cpumode = PERF_RECORD_MISC_KERNEL;
2121 case PERF_CONTEXT_USER:
2122 *cpumode = PERF_RECORD_MISC_USER;
2125 pr_debug("invalid callchain context: "
2126 "%"PRId64"\n", (s64) ip);
2128 * It seems the callchain is corrupted.
2131 callchain_cursor_reset(cursor);
2136 thread__find_symbol(thread, *cpumode, ip, &al);
2139 if (al.sym != NULL) {
2140 if (perf_hpp_list.parent && !*parent &&
2141 symbol__match_regex(al.sym, &parent_regex))
2143 else if (have_ignore_callees && root_al &&
2144 symbol__match_regex(al.sym, &ignore_callees_regex)) {
2145 /* Treat this symbol as the root,
2146 forgetting its callees. */
2148 callchain_cursor_reset(cursor);
2152 if (symbol_conf.hide_unresolved && al.sym == NULL)
2156 nr_loop_iter = iter->nr_loop_iter;
2157 iter_cycles = iter->cycles;
2163 srcline = callchain_srcline(&ms, al.addr);
2164 return callchain_cursor_append(cursor, ip, &ms,
2165 branch, flags, nr_loop_iter,
2166 iter_cycles, branch_from, srcline);
2169 struct branch_info *sample__resolve_bstack(struct perf_sample *sample,
2170 struct addr_location *al)
2173 const struct branch_stack *bs = sample->branch_stack;
2174 struct branch_entry *entries = perf_sample__branch_entries(sample);
2175 struct branch_info *bi = calloc(bs->nr, sizeof(struct branch_info));
2180 for (i = 0; i < bs->nr; i++) {
2181 ip__resolve_ams(al->thread, &bi[i].to, entries[i].to);
2182 ip__resolve_ams(al->thread, &bi[i].from, entries[i].from);
2183 bi[i].flags = entries[i].flags;
2188 static void save_iterations(struct iterations *iter,
2189 struct branch_entry *be, int nr)
2193 iter->nr_loop_iter++;
2196 for (i = 0; i < nr; i++)
2197 iter->cycles += be[i].flags.cycles;
2202 #define NO_ENTRY 0xff
2204 #define PERF_MAX_BRANCH_DEPTH 127
2207 static int remove_loops(struct branch_entry *l, int nr,
2208 struct iterations *iter)
2211 unsigned char chash[CHASHSZ];
2213 memset(chash, NO_ENTRY, sizeof(chash));
2215 BUG_ON(PERF_MAX_BRANCH_DEPTH > 255);
2217 for (i = 0; i < nr; i++) {
2218 int h = hash_64(l[i].from, CHASHBITS) % CHASHSZ;
2220 /* no collision handling for now */
2221 if (chash[h] == NO_ENTRY) {
2223 } else if (l[chash[h]].from == l[i].from) {
2224 bool is_loop = true;
2225 /* check if it is a real loop */
2227 for (j = chash[h]; j < i && i + off < nr; j++, off++)
2228 if (l[j].from != l[i + off].from) {
2235 save_iterations(iter + i + off,
2238 memmove(iter + i, iter + i + off,
2241 memmove(l + i, l + i + off,
2252 static int lbr_callchain_add_kernel_ip(struct thread *thread,
2253 struct callchain_cursor *cursor,
2254 struct perf_sample *sample,
2255 struct symbol **parent,
2256 struct addr_location *root_al,
2258 bool callee, int end)
2260 struct ip_callchain *chain = sample->callchain;
2261 u8 cpumode = PERF_RECORD_MISC_USER;
2265 for (i = 0; i < end + 1; i++) {
2266 err = add_callchain_ip(thread, cursor, parent,
2267 root_al, &cpumode, chain->ips[i],
2268 false, NULL, NULL, branch_from);
2275 for (i = end; i >= 0; i--) {
2276 err = add_callchain_ip(thread, cursor, parent,
2277 root_al, &cpumode, chain->ips[i],
2278 false, NULL, NULL, branch_from);
2286 static void save_lbr_cursor_node(struct thread *thread,
2287 struct callchain_cursor *cursor,
2290 struct lbr_stitch *lbr_stitch = thread->lbr_stitch;
2295 if (cursor->pos == cursor->nr) {
2296 lbr_stitch->prev_lbr_cursor[idx].valid = false;
2301 cursor->curr = cursor->first;
2303 cursor->curr = cursor->curr->next;
2304 memcpy(&lbr_stitch->prev_lbr_cursor[idx], cursor->curr,
2305 sizeof(struct callchain_cursor_node));
2307 lbr_stitch->prev_lbr_cursor[idx].valid = true;
2311 static int lbr_callchain_add_lbr_ip(struct thread *thread,
2312 struct callchain_cursor *cursor,
2313 struct perf_sample *sample,
2314 struct symbol **parent,
2315 struct addr_location *root_al,
2319 struct branch_stack *lbr_stack = sample->branch_stack;
2320 struct branch_entry *entries = perf_sample__branch_entries(sample);
2321 u8 cpumode = PERF_RECORD_MISC_USER;
2322 int lbr_nr = lbr_stack->nr;
2323 struct branch_flags *flags;
2328 * The curr and pos are not used in writing session. They are cleared
2329 * in callchain_cursor_commit() when the writing session is closed.
2330 * Using curr and pos to track the current cursor node.
2332 if (thread->lbr_stitch) {
2333 cursor->curr = NULL;
2334 cursor->pos = cursor->nr;
2336 cursor->curr = cursor->first;
2337 for (i = 0; i < (int)(cursor->nr - 1); i++)
2338 cursor->curr = cursor->curr->next;
2343 /* Add LBR ip from first entries.to */
2345 flags = &entries[0].flags;
2346 *branch_from = entries[0].from;
2347 err = add_callchain_ip(thread, cursor, parent,
2348 root_al, &cpumode, ip,
2355 * The number of cursor node increases.
2356 * Move the current cursor node.
2357 * But does not need to save current cursor node for entry 0.
2358 * It's impossible to stitch the whole LBRs of previous sample.
2360 if (thread->lbr_stitch && (cursor->pos != cursor->nr)) {
2362 cursor->curr = cursor->first;
2364 cursor->curr = cursor->curr->next;
2368 /* Add LBR ip from entries.from one by one. */
2369 for (i = 0; i < lbr_nr; i++) {
2370 ip = entries[i].from;
2371 flags = &entries[i].flags;
2372 err = add_callchain_ip(thread, cursor, parent,
2373 root_al, &cpumode, ip,
2378 save_lbr_cursor_node(thread, cursor, i);
2383 /* Add LBR ip from entries.from one by one. */
2384 for (i = lbr_nr - 1; i >= 0; i--) {
2385 ip = entries[i].from;
2386 flags = &entries[i].flags;
2387 err = add_callchain_ip(thread, cursor, parent,
2388 root_al, &cpumode, ip,
2393 save_lbr_cursor_node(thread, cursor, i);
2396 /* Add LBR ip from first entries.to */
2398 flags = &entries[0].flags;
2399 *branch_from = entries[0].from;
2400 err = add_callchain_ip(thread, cursor, parent,
2401 root_al, &cpumode, ip,
2410 static int lbr_callchain_add_stitched_lbr_ip(struct thread *thread,
2411 struct callchain_cursor *cursor)
2413 struct lbr_stitch *lbr_stitch = thread->lbr_stitch;
2414 struct callchain_cursor_node *cnode;
2415 struct stitch_list *stitch_node;
2418 list_for_each_entry(stitch_node, &lbr_stitch->lists, node) {
2419 cnode = &stitch_node->cursor;
2421 err = callchain_cursor_append(cursor, cnode->ip,
2424 &cnode->branch_flags,
2425 cnode->nr_loop_iter,
2435 static struct stitch_list *get_stitch_node(struct thread *thread)
2437 struct lbr_stitch *lbr_stitch = thread->lbr_stitch;
2438 struct stitch_list *stitch_node;
2440 if (!list_empty(&lbr_stitch->free_lists)) {
2441 stitch_node = list_first_entry(&lbr_stitch->free_lists,
2442 struct stitch_list, node);
2443 list_del(&stitch_node->node);
2448 return malloc(sizeof(struct stitch_list));
2451 static bool has_stitched_lbr(struct thread *thread,
2452 struct perf_sample *cur,
2453 struct perf_sample *prev,
2454 unsigned int max_lbr,
2457 struct branch_stack *cur_stack = cur->branch_stack;
2458 struct branch_entry *cur_entries = perf_sample__branch_entries(cur);
2459 struct branch_stack *prev_stack = prev->branch_stack;
2460 struct branch_entry *prev_entries = perf_sample__branch_entries(prev);
2461 struct lbr_stitch *lbr_stitch = thread->lbr_stitch;
2462 int i, j, nr_identical_branches = 0;
2463 struct stitch_list *stitch_node;
2464 u64 cur_base, distance;
2466 if (!cur_stack || !prev_stack)
2469 /* Find the physical index of the base-of-stack for current sample. */
2470 cur_base = max_lbr - cur_stack->nr + cur_stack->hw_idx + 1;
2472 distance = (prev_stack->hw_idx > cur_base) ? (prev_stack->hw_idx - cur_base) :
2473 (max_lbr + prev_stack->hw_idx - cur_base);
2474 /* Previous sample has shorter stack. Nothing can be stitched. */
2475 if (distance + 1 > prev_stack->nr)
2479 * Check if there are identical LBRs between two samples.
2480 * Identicall LBRs must have same from, to and flags values. Also,
2481 * they have to be saved in the same LBR registers (same physical
2484 * Starts from the base-of-stack of current sample.
2486 for (i = distance, j = cur_stack->nr - 1; (i >= 0) && (j >= 0); i--, j--) {
2487 if ((prev_entries[i].from != cur_entries[j].from) ||
2488 (prev_entries[i].to != cur_entries[j].to) ||
2489 (prev_entries[i].flags.value != cur_entries[j].flags.value))
2491 nr_identical_branches++;
2494 if (!nr_identical_branches)
2498 * Save the LBRs between the base-of-stack of previous sample
2499 * and the base-of-stack of current sample into lbr_stitch->lists.
2500 * These LBRs will be stitched later.
2502 for (i = prev_stack->nr - 1; i > (int)distance; i--) {
2504 if (!lbr_stitch->prev_lbr_cursor[i].valid)
2507 stitch_node = get_stitch_node(thread);
2511 memcpy(&stitch_node->cursor, &lbr_stitch->prev_lbr_cursor[i],
2512 sizeof(struct callchain_cursor_node));
2515 list_add(&stitch_node->node, &lbr_stitch->lists);
2517 list_add_tail(&stitch_node->node, &lbr_stitch->lists);
2523 static bool alloc_lbr_stitch(struct thread *thread, unsigned int max_lbr)
2525 if (thread->lbr_stitch)
2528 thread->lbr_stitch = zalloc(sizeof(*thread->lbr_stitch));
2529 if (!thread->lbr_stitch)
2532 thread->lbr_stitch->prev_lbr_cursor = calloc(max_lbr + 1, sizeof(struct callchain_cursor_node));
2533 if (!thread->lbr_stitch->prev_lbr_cursor)
2534 goto free_lbr_stitch;
2536 INIT_LIST_HEAD(&thread->lbr_stitch->lists);
2537 INIT_LIST_HEAD(&thread->lbr_stitch->free_lists);
2542 zfree(&thread->lbr_stitch);
2544 pr_warning("Failed to allocate space for stitched LBRs. Disable LBR stitch\n");
2545 thread->lbr_stitch_enable = false;
2550 * Recolve LBR callstack chain sample
2552 * 1 on success get LBR callchain information
2553 * 0 no available LBR callchain information, should try fp
2554 * negative error code on other errors.
2556 static int resolve_lbr_callchain_sample(struct thread *thread,
2557 struct callchain_cursor *cursor,
2558 struct perf_sample *sample,
2559 struct symbol **parent,
2560 struct addr_location *root_al,
2562 unsigned int max_lbr)
2564 bool callee = (callchain_param.order == ORDER_CALLEE);
2565 struct ip_callchain *chain = sample->callchain;
2566 int chain_nr = min(max_stack, (int)chain->nr), i;
2567 struct lbr_stitch *lbr_stitch;
2568 bool stitched_lbr = false;
2569 u64 branch_from = 0;
2572 for (i = 0; i < chain_nr; i++) {
2573 if (chain->ips[i] == PERF_CONTEXT_USER)
2577 /* LBR only affects the user callchain */
2581 if (thread->lbr_stitch_enable && !sample->no_hw_idx &&
2582 (max_lbr > 0) && alloc_lbr_stitch(thread, max_lbr)) {
2583 lbr_stitch = thread->lbr_stitch;
2585 stitched_lbr = has_stitched_lbr(thread, sample,
2586 &lbr_stitch->prev_sample,
2589 if (!stitched_lbr && !list_empty(&lbr_stitch->lists)) {
2590 list_replace_init(&lbr_stitch->lists,
2591 &lbr_stitch->free_lists);
2593 memcpy(&lbr_stitch->prev_sample, sample, sizeof(*sample));
2598 err = lbr_callchain_add_kernel_ip(thread, cursor, sample,
2599 parent, root_al, branch_from,
2604 err = lbr_callchain_add_lbr_ip(thread, cursor, sample, parent,
2605 root_al, &branch_from, true);
2610 err = lbr_callchain_add_stitched_lbr_ip(thread, cursor);
2617 err = lbr_callchain_add_stitched_lbr_ip(thread, cursor);
2621 err = lbr_callchain_add_lbr_ip(thread, cursor, sample, parent,
2622 root_al, &branch_from, false);
2627 err = lbr_callchain_add_kernel_ip(thread, cursor, sample,
2628 parent, root_al, branch_from,
2636 return (err < 0) ? err : 0;
2639 static int find_prev_cpumode(struct ip_callchain *chain, struct thread *thread,
2640 struct callchain_cursor *cursor,
2641 struct symbol **parent,
2642 struct addr_location *root_al,
2643 u8 *cpumode, int ent)
2647 while (--ent >= 0) {
2648 u64 ip = chain->ips[ent];
2650 if (ip >= PERF_CONTEXT_MAX) {
2651 err = add_callchain_ip(thread, cursor, parent,
2652 root_al, cpumode, ip,
2653 false, NULL, NULL, 0);
2660 static int thread__resolve_callchain_sample(struct thread *thread,
2661 struct callchain_cursor *cursor,
2662 struct evsel *evsel,
2663 struct perf_sample *sample,
2664 struct symbol **parent,
2665 struct addr_location *root_al,
2668 struct branch_stack *branch = sample->branch_stack;
2669 struct branch_entry *entries = perf_sample__branch_entries(sample);
2670 struct ip_callchain *chain = sample->callchain;
2672 u8 cpumode = PERF_RECORD_MISC_USER;
2673 int i, j, err, nr_entries;
2678 chain_nr = chain->nr;
2680 if (evsel__has_branch_callstack(evsel)) {
2681 struct perf_env *env = evsel__env(evsel);
2683 err = resolve_lbr_callchain_sample(thread, cursor, sample, parent,
2685 !env ? 0 : env->max_branches);
2687 return (err < 0) ? err : 0;
2691 * Based on DWARF debug information, some architectures skip
2692 * a callchain entry saved by the kernel.
2694 skip_idx = arch_skip_callchain_idx(thread, chain);
2697 * Add branches to call stack for easier browsing. This gives
2698 * more context for a sample than just the callers.
2700 * This uses individual histograms of paths compared to the
2701 * aggregated histograms the normal LBR mode uses.
2703 * Limitations for now:
2704 * - No extra filters
2705 * - No annotations (should annotate somehow)
2708 if (branch && callchain_param.branch_callstack) {
2709 int nr = min(max_stack, (int)branch->nr);
2710 struct branch_entry be[nr];
2711 struct iterations iter[nr];
2713 if (branch->nr > PERF_MAX_BRANCH_DEPTH) {
2714 pr_warning("corrupted branch chain. skipping...\n");
2718 for (i = 0; i < nr; i++) {
2719 if (callchain_param.order == ORDER_CALLEE) {
2726 * Check for overlap into the callchain.
2727 * The return address is one off compared to
2728 * the branch entry. To adjust for this
2729 * assume the calling instruction is not longer
2732 if (i == skip_idx ||
2733 chain->ips[first_call] >= PERF_CONTEXT_MAX)
2735 else if (be[i].from < chain->ips[first_call] &&
2736 be[i].from >= chain->ips[first_call] - 8)
2739 be[i] = entries[branch->nr - i - 1];
2742 memset(iter, 0, sizeof(struct iterations) * nr);
2743 nr = remove_loops(be, nr, iter);
2745 for (i = 0; i < nr; i++) {
2746 err = add_callchain_ip(thread, cursor, parent,
2753 err = add_callchain_ip(thread, cursor, parent, root_al,
2770 if (chain && callchain_param.order != ORDER_CALLEE) {
2771 err = find_prev_cpumode(chain, thread, cursor, parent, root_al,
2772 &cpumode, chain->nr - first_call);
2774 return (err < 0) ? err : 0;
2776 for (i = first_call, nr_entries = 0;
2777 i < chain_nr && nr_entries < max_stack; i++) {
2780 if (callchain_param.order == ORDER_CALLEE)
2783 j = chain->nr - i - 1;
2785 #ifdef HAVE_SKIP_CALLCHAIN_IDX
2790 if (ip < PERF_CONTEXT_MAX)
2792 else if (callchain_param.order != ORDER_CALLEE) {
2793 err = find_prev_cpumode(chain, thread, cursor, parent,
2794 root_al, &cpumode, j);
2796 return (err < 0) ? err : 0;
2800 err = add_callchain_ip(thread, cursor, parent,
2801 root_al, &cpumode, ip,
2802 false, NULL, NULL, 0);
2805 return (err < 0) ? err : 0;
2811 static int append_inlines(struct callchain_cursor *cursor, struct map_symbol *ms, u64 ip)
2813 struct symbol *sym = ms->sym;
2814 struct map *map = ms->map;
2815 struct inline_node *inline_node;
2816 struct inline_list *ilist;
2820 if (!symbol_conf.inline_name || !map || !sym)
2823 addr = map__map_ip(map, ip);
2824 addr = map__rip_2objdump(map, addr);
2826 inline_node = inlines__tree_find(&map->dso->inlined_nodes, addr);
2828 inline_node = dso__parse_addr_inlines(map->dso, addr, sym);
2831 inlines__tree_insert(&map->dso->inlined_nodes, inline_node);
2834 list_for_each_entry(ilist, &inline_node->val, list) {
2835 struct map_symbol ilist_ms = {
2838 .sym = ilist->symbol,
2840 ret = callchain_cursor_append(cursor, ip, &ilist_ms, false,
2841 NULL, 0, 0, 0, ilist->srcline);
2850 static int unwind_entry(struct unwind_entry *entry, void *arg)
2852 struct callchain_cursor *cursor = arg;
2853 const char *srcline = NULL;
2854 u64 addr = entry->ip;
2856 if (symbol_conf.hide_unresolved && entry->ms.sym == NULL)
2859 if (append_inlines(cursor, &entry->ms, entry->ip) == 0)
2863 * Convert entry->ip from a virtual address to an offset in
2864 * its corresponding binary.
2867 addr = map__map_ip(entry->ms.map, entry->ip);
2869 srcline = callchain_srcline(&entry->ms, addr);
2870 return callchain_cursor_append(cursor, entry->ip, &entry->ms,
2871 false, NULL, 0, 0, 0, srcline);
2874 static int thread__resolve_callchain_unwind(struct thread *thread,
2875 struct callchain_cursor *cursor,
2876 struct evsel *evsel,
2877 struct perf_sample *sample,
2880 /* Can we do dwarf post unwind? */
2881 if (!((evsel->core.attr.sample_type & PERF_SAMPLE_REGS_USER) &&
2882 (evsel->core.attr.sample_type & PERF_SAMPLE_STACK_USER)))
2885 /* Bail out if nothing was captured. */
2886 if ((!sample->user_regs.regs) ||
2887 (!sample->user_stack.size))
2890 return unwind__get_entries(unwind_entry, cursor,
2891 thread, sample, max_stack);
2894 int thread__resolve_callchain(struct thread *thread,
2895 struct callchain_cursor *cursor,
2896 struct evsel *evsel,
2897 struct perf_sample *sample,
2898 struct symbol **parent,
2899 struct addr_location *root_al,
2904 callchain_cursor_reset(cursor);
2906 if (callchain_param.order == ORDER_CALLEE) {
2907 ret = thread__resolve_callchain_sample(thread, cursor,
2913 ret = thread__resolve_callchain_unwind(thread, cursor,
2917 ret = thread__resolve_callchain_unwind(thread, cursor,
2922 ret = thread__resolve_callchain_sample(thread, cursor,
2931 int machine__for_each_thread(struct machine *machine,
2932 int (*fn)(struct thread *thread, void *p),
2935 struct threads *threads;
2937 struct thread *thread;
2941 for (i = 0; i < THREADS__TABLE_SIZE; i++) {
2942 threads = &machine->threads[i];
2943 for (nd = rb_first_cached(&threads->entries); nd;
2945 thread = rb_entry(nd, struct thread, rb_node);
2946 rc = fn(thread, priv);
2951 list_for_each_entry(thread, &threads->dead, node) {
2952 rc = fn(thread, priv);
2960 int machines__for_each_thread(struct machines *machines,
2961 int (*fn)(struct thread *thread, void *p),
2967 rc = machine__for_each_thread(&machines->host, fn, priv);
2971 for (nd = rb_first_cached(&machines->guests); nd; nd = rb_next(nd)) {
2972 struct machine *machine = rb_entry(nd, struct machine, rb_node);
2974 rc = machine__for_each_thread(machine, fn, priv);
2981 pid_t machine__get_current_tid(struct machine *machine, int cpu)
2983 int nr_cpus = min(machine->env->nr_cpus_online, MAX_NR_CPUS);
2985 if (cpu < 0 || cpu >= nr_cpus || !machine->current_tid)
2988 return machine->current_tid[cpu];
2991 int machine__set_current_tid(struct machine *machine, int cpu, pid_t pid,
2994 struct thread *thread;
2995 int nr_cpus = min(machine->env->nr_cpus_online, MAX_NR_CPUS);
3000 if (!machine->current_tid) {
3003 machine->current_tid = calloc(nr_cpus, sizeof(pid_t));
3004 if (!machine->current_tid)
3006 for (i = 0; i < nr_cpus; i++)
3007 machine->current_tid[i] = -1;
3010 if (cpu >= nr_cpus) {
3011 pr_err("Requested CPU %d too large. ", cpu);
3012 pr_err("Consider raising MAX_NR_CPUS\n");
3016 machine->current_tid[cpu] = tid;
3018 thread = machine__findnew_thread(machine, pid, tid);
3023 thread__put(thread);
3029 * Compares the raw arch string. N.B. see instead perf_env__arch() if a
3030 * normalized arch is needed.
3032 bool machine__is(struct machine *machine, const char *arch)
3034 return machine && !strcmp(perf_env__raw_arch(machine->env), arch);
3037 int machine__nr_cpus_avail(struct machine *machine)
3039 return machine ? perf_env__nr_cpus_avail(machine->env) : 0;
3042 int machine__get_kernel_start(struct machine *machine)
3044 struct map *map = machine__kernel_map(machine);
3048 * The only addresses above 2^63 are kernel addresses of a 64-bit
3049 * kernel. Note that addresses are unsigned so that on a 32-bit system
3050 * all addresses including kernel addresses are less than 2^32. In
3051 * that case (32-bit system), if the kernel mapping is unknown, all
3052 * addresses will be assumed to be in user space - see
3053 * machine__kernel_ip().
3055 machine->kernel_start = 1ULL << 63;
3057 err = map__load(map);
3059 * On x86_64, PTI entry trampolines are less than the
3060 * start of kernel text, but still above 2^63. So leave
3061 * kernel_start = 1ULL << 63 for x86_64.
3063 if (!err && !machine__is(machine, "x86_64"))
3064 machine->kernel_start = map->start;
3069 u8 machine__addr_cpumode(struct machine *machine, u8 cpumode, u64 addr)
3071 u8 addr_cpumode = cpumode;
3074 if (!machine->single_address_space)
3077 kernel_ip = machine__kernel_ip(machine, addr);
3079 case PERF_RECORD_MISC_KERNEL:
3080 case PERF_RECORD_MISC_USER:
3081 addr_cpumode = kernel_ip ? PERF_RECORD_MISC_KERNEL :
3082 PERF_RECORD_MISC_USER;
3084 case PERF_RECORD_MISC_GUEST_KERNEL:
3085 case PERF_RECORD_MISC_GUEST_USER:
3086 addr_cpumode = kernel_ip ? PERF_RECORD_MISC_GUEST_KERNEL :
3087 PERF_RECORD_MISC_GUEST_USER;
3093 return addr_cpumode;
3096 struct dso *machine__findnew_dso_id(struct machine *machine, const char *filename, struct dso_id *id)
3098 return dsos__findnew_id(&machine->dsos, filename, id);
3101 struct dso *machine__findnew_dso(struct machine *machine, const char *filename)
3103 return machine__findnew_dso_id(machine, filename, NULL);
3106 char *machine__resolve_kernel_addr(void *vmachine, unsigned long long *addrp, char **modp)
3108 struct machine *machine = vmachine;
3110 struct symbol *sym = machine__find_kernel_symbol(machine, *addrp, &map);
3115 *modp = __map__is_kmodule(map) ? (char *)map->dso->short_name : NULL;
3116 *addrp = map->unmap_ip(map, sym->start);
3120 int machine__for_each_dso(struct machine *machine, machine__dso_t fn, void *priv)
3125 list_for_each_entry(pos, &machine->dsos.head, node) {
3126 if (fn(pos, machine, priv))