13 #include <symbol/kallsyms.h>
15 #include "linux/hash.h"
17 static void __machine__remove_thread(struct machine
*machine
, struct thread
*th
, bool lock
);
19 static void dsos__init(struct dsos
*dsos
)
21 INIT_LIST_HEAD(&dsos
->head
);
23 pthread_rwlock_init(&dsos
->lock
, NULL
);
26 int machine__init(struct machine
*machine
, const char *root_dir
, pid_t pid
)
28 map_groups__init(&machine
->kmaps
, machine
);
29 RB_CLEAR_NODE(&machine
->rb_node
);
30 dsos__init(&machine
->dsos
);
32 machine
->threads
= RB_ROOT
;
33 pthread_rwlock_init(&machine
->threads_lock
, NULL
);
34 INIT_LIST_HEAD(&machine
->dead_threads
);
35 machine
->last_match
= NULL
;
37 machine
->vdso_info
= NULL
;
41 machine
->symbol_filter
= NULL
;
42 machine
->id_hdr_size
= 0;
43 machine
->comm_exec
= false;
44 machine
->kernel_start
= 0;
46 machine
->root_dir
= strdup(root_dir
);
47 if (machine
->root_dir
== NULL
)
50 if (pid
!= HOST_KERNEL_ID
) {
51 struct thread
*thread
= machine__findnew_thread(machine
, -1,
58 snprintf(comm
, sizeof(comm
), "[guest/%d]", pid
);
59 thread__set_comm(thread
, comm
, 0);
63 machine
->current_tid
= NULL
;
68 struct machine
*machine__new_host(void)
70 struct machine
*machine
= malloc(sizeof(*machine
));
72 if (machine
!= NULL
) {
73 machine__init(machine
, "", HOST_KERNEL_ID
);
75 if (machine__create_kernel_maps(machine
) < 0)
85 static void dsos__purge(struct dsos
*dsos
)
89 pthread_rwlock_wrlock(&dsos
->lock
);
91 list_for_each_entry_safe(pos
, n
, &dsos
->head
, node
) {
92 RB_CLEAR_NODE(&pos
->rb_node
);
93 list_del_init(&pos
->node
);
97 pthread_rwlock_unlock(&dsos
->lock
);
100 static void dsos__exit(struct dsos
*dsos
)
103 pthread_rwlock_destroy(&dsos
->lock
);
106 void machine__delete_threads(struct machine
*machine
)
110 pthread_rwlock_wrlock(&machine
->threads_lock
);
111 nd
= rb_first(&machine
->threads
);
113 struct thread
*t
= rb_entry(nd
, struct thread
, rb_node
);
116 __machine__remove_thread(machine
, t
, false);
118 pthread_rwlock_unlock(&machine
->threads_lock
);
121 void machine__exit(struct machine
*machine
)
123 map_groups__exit(&machine
->kmaps
);
124 dsos__exit(&machine
->dsos
);
125 machine__exit_vdso(machine
);
126 zfree(&machine
->root_dir
);
127 zfree(&machine
->current_tid
);
128 pthread_rwlock_destroy(&machine
->threads_lock
);
131 void machine__delete(struct machine
*machine
)
133 machine__exit(machine
);
137 void machines__init(struct machines
*machines
)
139 machine__init(&machines
->host
, "", HOST_KERNEL_ID
);
140 machines
->guests
= RB_ROOT
;
141 machines
->symbol_filter
= NULL
;
144 void machines__exit(struct machines
*machines
)
146 machine__exit(&machines
->host
);
150 struct machine
*machines__add(struct machines
*machines
, pid_t pid
,
151 const char *root_dir
)
153 struct rb_node
**p
= &machines
->guests
.rb_node
;
154 struct rb_node
*parent
= NULL
;
155 struct machine
*pos
, *machine
= malloc(sizeof(*machine
));
160 if (machine__init(machine
, root_dir
, pid
) != 0) {
165 machine
->symbol_filter
= machines
->symbol_filter
;
169 pos
= rb_entry(parent
, struct machine
, rb_node
);
176 rb_link_node(&machine
->rb_node
, parent
, p
);
177 rb_insert_color(&machine
->rb_node
, &machines
->guests
);
182 void machines__set_symbol_filter(struct machines
*machines
,
183 symbol_filter_t symbol_filter
)
187 machines
->symbol_filter
= symbol_filter
;
188 machines
->host
.symbol_filter
= symbol_filter
;
190 for (nd
= rb_first(&machines
->guests
); nd
; nd
= rb_next(nd
)) {
191 struct machine
*machine
= rb_entry(nd
, struct machine
, rb_node
);
193 machine
->symbol_filter
= symbol_filter
;
197 void machines__set_comm_exec(struct machines
*machines
, bool comm_exec
)
201 machines
->host
.comm_exec
= comm_exec
;
203 for (nd
= rb_first(&machines
->guests
); nd
; nd
= rb_next(nd
)) {
204 struct machine
*machine
= rb_entry(nd
, struct machine
, rb_node
);
206 machine
->comm_exec
= comm_exec
;
210 struct machine
*machines__find(struct machines
*machines
, pid_t pid
)
212 struct rb_node
**p
= &machines
->guests
.rb_node
;
213 struct rb_node
*parent
= NULL
;
214 struct machine
*machine
;
215 struct machine
*default_machine
= NULL
;
217 if (pid
== HOST_KERNEL_ID
)
218 return &machines
->host
;
222 machine
= rb_entry(parent
, struct machine
, rb_node
);
223 if (pid
< machine
->pid
)
225 else if (pid
> machine
->pid
)
230 default_machine
= machine
;
233 return default_machine
;
236 struct machine
*machines__findnew(struct machines
*machines
, pid_t pid
)
239 const char *root_dir
= "";
240 struct machine
*machine
= machines__find(machines
, pid
);
242 if (machine
&& (machine
->pid
== pid
))
245 if ((pid
!= HOST_KERNEL_ID
) &&
246 (pid
!= DEFAULT_GUEST_KERNEL_ID
) &&
247 (symbol_conf
.guestmount
)) {
248 sprintf(path
, "%s/%d", symbol_conf
.guestmount
, pid
);
249 if (access(path
, R_OK
)) {
250 static struct strlist
*seen
;
253 seen
= strlist__new(true, NULL
);
255 if (!strlist__has_entry(seen
, path
)) {
256 pr_err("Can't access file %s\n", path
);
257 strlist__add(seen
, path
);
265 machine
= machines__add(machines
, pid
, root_dir
);
270 void machines__process_guests(struct machines
*machines
,
271 machine__process_t process
, void *data
)
275 for (nd
= rb_first(&machines
->guests
); nd
; nd
= rb_next(nd
)) {
276 struct machine
*pos
= rb_entry(nd
, struct machine
, rb_node
);
281 char *machine__mmap_name(struct machine
*machine
, char *bf
, size_t size
)
283 if (machine__is_host(machine
))
284 snprintf(bf
, size
, "[%s]", "kernel.kallsyms");
285 else if (machine__is_default_guest(machine
))
286 snprintf(bf
, size
, "[%s]", "guest.kernel.kallsyms");
288 snprintf(bf
, size
, "[%s.%d]", "guest.kernel.kallsyms",
295 void machines__set_id_hdr_size(struct machines
*machines
, u16 id_hdr_size
)
297 struct rb_node
*node
;
298 struct machine
*machine
;
300 machines
->host
.id_hdr_size
= id_hdr_size
;
302 for (node
= rb_first(&machines
->guests
); node
; node
= rb_next(node
)) {
303 machine
= rb_entry(node
, struct machine
, rb_node
);
304 machine
->id_hdr_size
= id_hdr_size
;
310 static void machine__update_thread_pid(struct machine
*machine
,
311 struct thread
*th
, pid_t pid
)
313 struct thread
*leader
;
315 if (pid
== th
->pid_
|| pid
== -1 || th
->pid_
!= -1)
320 if (th
->pid_
== th
->tid
)
323 leader
= __machine__findnew_thread(machine
, th
->pid_
, th
->pid_
);
328 leader
->mg
= map_groups__new(machine
);
333 if (th
->mg
== leader
->mg
)
338 * Maps are created from MMAP events which provide the pid and
339 * tid. Consequently there never should be any maps on a thread
340 * with an unknown pid. Just print an error if there are.
342 if (!map_groups__empty(th
->mg
))
343 pr_err("Discarding thread maps for %d:%d\n",
345 map_groups__put(th
->mg
);
348 th
->mg
= map_groups__get(leader
->mg
);
353 pr_err("Failed to join map groups for %d:%d\n", th
->pid_
, th
->tid
);
356 static struct thread
*____machine__findnew_thread(struct machine
*machine
,
357 pid_t pid
, pid_t tid
,
360 struct rb_node
**p
= &machine
->threads
.rb_node
;
361 struct rb_node
*parent
= NULL
;
365 * Front-end cache - TID lookups come in blocks,
366 * so most of the time we dont have to look up
369 th
= machine
->last_match
;
371 if (th
->tid
== tid
) {
372 machine__update_thread_pid(machine
, th
, pid
);
376 machine
->last_match
= NULL
;
381 th
= rb_entry(parent
, struct thread
, rb_node
);
383 if (th
->tid
== tid
) {
384 machine
->last_match
= th
;
385 machine__update_thread_pid(machine
, th
, pid
);
398 th
= thread__new(pid
, tid
);
400 rb_link_node(&th
->rb_node
, parent
, p
);
401 rb_insert_color(&th
->rb_node
, &machine
->threads
);
404 * We have to initialize map_groups separately
405 * after rb tree is updated.
407 * The reason is that we call machine__findnew_thread
408 * within thread__init_map_groups to find the thread
409 * leader and that would screwed the rb tree.
411 if (thread__init_map_groups(th
, machine
)) {
412 rb_erase_init(&th
->rb_node
, &machine
->threads
);
413 RB_CLEAR_NODE(&th
->rb_node
);
418 * It is now in the rbtree, get a ref
421 machine
->last_match
= th
;
427 struct thread
*__machine__findnew_thread(struct machine
*machine
, pid_t pid
, pid_t tid
)
429 return ____machine__findnew_thread(machine
, pid
, tid
, true);
432 struct thread
*machine__findnew_thread(struct machine
*machine
, pid_t pid
,
437 pthread_rwlock_wrlock(&machine
->threads_lock
);
438 th
= thread__get(__machine__findnew_thread(machine
, pid
, tid
));
439 pthread_rwlock_unlock(&machine
->threads_lock
);
443 struct thread
*machine__find_thread(struct machine
*machine
, pid_t pid
,
447 pthread_rwlock_rdlock(&machine
->threads_lock
);
448 th
= thread__get(____machine__findnew_thread(machine
, pid
, tid
, false));
449 pthread_rwlock_unlock(&machine
->threads_lock
);
453 struct comm
*machine__thread_exec_comm(struct machine
*machine
,
454 struct thread
*thread
)
456 if (machine
->comm_exec
)
457 return thread__exec_comm(thread
);
459 return thread__comm(thread
);
462 int machine__process_comm_event(struct machine
*machine
, union perf_event
*event
,
463 struct perf_sample
*sample
)
465 struct thread
*thread
= machine__findnew_thread(machine
,
468 bool exec
= event
->header
.misc
& PERF_RECORD_MISC_COMM_EXEC
;
472 machine
->comm_exec
= true;
475 perf_event__fprintf_comm(event
, stdout
);
477 if (thread
== NULL
||
478 __thread__set_comm(thread
, event
->comm
.comm
, sample
->time
, exec
)) {
479 dump_printf("problem processing PERF_RECORD_COMM, skipping event.\n");
488 int machine__process_lost_event(struct machine
*machine __maybe_unused
,
489 union perf_event
*event
, struct perf_sample
*sample __maybe_unused
)
491 dump_printf(": id:%" PRIu64
": lost:%" PRIu64
"\n",
492 event
->lost
.id
, event
->lost
.lost
);
496 int machine__process_lost_samples_event(struct machine
*machine __maybe_unused
,
497 union perf_event
*event
, struct perf_sample
*sample
)
499 dump_printf(": id:%" PRIu64
": lost samples :%" PRIu64
"\n",
500 sample
->id
, event
->lost_samples
.lost
);
504 static struct dso
*machine__findnew_module_dso(struct machine
*machine
,
506 const char *filename
)
510 pthread_rwlock_wrlock(&machine
->dsos
.lock
);
512 dso
= __dsos__find(&machine
->dsos
, m
->name
, true);
514 dso
= __dsos__addnew(&machine
->dsos
, m
->name
);
518 if (machine__is_host(machine
))
519 dso
->symtab_type
= DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE
;
521 dso
->symtab_type
= DSO_BINARY_TYPE__GUEST_KMODULE
;
523 /* _KMODULE_COMP should be next to _KMODULE */
524 if (m
->kmod
&& m
->comp
)
527 dso__set_short_name(dso
, strdup(m
->name
), true);
528 dso__set_long_name(dso
, strdup(filename
), true);
533 pthread_rwlock_unlock(&machine
->dsos
.lock
);
537 int machine__process_aux_event(struct machine
*machine __maybe_unused
,
538 union perf_event
*event
)
541 perf_event__fprintf_aux(event
, stdout
);
545 int machine__process_itrace_start_event(struct machine
*machine __maybe_unused
,
546 union perf_event
*event
)
549 perf_event__fprintf_itrace_start(event
, stdout
);
553 struct map
*machine__findnew_module_map(struct machine
*machine
, u64 start
,
554 const char *filename
)
556 struct map
*map
= NULL
;
560 if (kmod_path__parse_name(&m
, filename
))
563 map
= map_groups__find_by_name(&machine
->kmaps
, MAP__FUNCTION
,
568 dso
= machine__findnew_module_dso(machine
, &m
, filename
);
572 map
= map__new2(start
, dso
, MAP__FUNCTION
);
576 map_groups__insert(&machine
->kmaps
, map
);
583 size_t machines__fprintf_dsos(struct machines
*machines
, FILE *fp
)
586 size_t ret
= __dsos__fprintf(&machines
->host
.dsos
.head
, fp
);
588 for (nd
= rb_first(&machines
->guests
); nd
; nd
= rb_next(nd
)) {
589 struct machine
*pos
= rb_entry(nd
, struct machine
, rb_node
);
590 ret
+= __dsos__fprintf(&pos
->dsos
.head
, fp
);
596 size_t machine__fprintf_dsos_buildid(struct machine
*m
, FILE *fp
,
597 bool (skip
)(struct dso
*dso
, int parm
), int parm
)
599 return __dsos__fprintf_buildid(&m
->dsos
.head
, fp
, skip
, parm
);
602 size_t machines__fprintf_dsos_buildid(struct machines
*machines
, FILE *fp
,
603 bool (skip
)(struct dso
*dso
, int parm
), int parm
)
606 size_t ret
= machine__fprintf_dsos_buildid(&machines
->host
, fp
, skip
, parm
);
608 for (nd
= rb_first(&machines
->guests
); nd
; nd
= rb_next(nd
)) {
609 struct machine
*pos
= rb_entry(nd
, struct machine
, rb_node
);
610 ret
+= machine__fprintf_dsos_buildid(pos
, fp
, skip
, parm
);
615 size_t machine__fprintf_vmlinux_path(struct machine
*machine
, FILE *fp
)
619 struct dso
*kdso
= machine
->vmlinux_maps
[MAP__FUNCTION
]->dso
;
621 if (kdso
->has_build_id
) {
622 char filename
[PATH_MAX
];
623 if (dso__build_id_filename(kdso
, filename
, sizeof(filename
)))
624 printed
+= fprintf(fp
, "[0] %s\n", filename
);
627 for (i
= 0; i
< vmlinux_path__nr_entries
; ++i
)
628 printed
+= fprintf(fp
, "[%d] %s\n",
629 i
+ kdso
->has_build_id
, vmlinux_path
[i
]);
634 size_t machine__fprintf(struct machine
*machine
, FILE *fp
)
639 pthread_rwlock_rdlock(&machine
->threads_lock
);
641 for (nd
= rb_first(&machine
->threads
); nd
; nd
= rb_next(nd
)) {
642 struct thread
*pos
= rb_entry(nd
, struct thread
, rb_node
);
644 ret
+= thread__fprintf(pos
, fp
);
647 pthread_rwlock_unlock(&machine
->threads_lock
);
652 static struct dso
*machine__get_kernel(struct machine
*machine
)
654 const char *vmlinux_name
= NULL
;
657 if (machine__is_host(machine
)) {
658 vmlinux_name
= symbol_conf
.vmlinux_name
;
660 vmlinux_name
= "[kernel.kallsyms]";
662 kernel
= machine__findnew_kernel(machine
, vmlinux_name
,
663 "[kernel]", DSO_TYPE_KERNEL
);
667 if (machine__is_default_guest(machine
))
668 vmlinux_name
= symbol_conf
.default_guest_vmlinux_name
;
670 vmlinux_name
= machine__mmap_name(machine
, bf
,
673 kernel
= machine__findnew_kernel(machine
, vmlinux_name
,
675 DSO_TYPE_GUEST_KERNEL
);
678 if (kernel
!= NULL
&& (!kernel
->has_build_id
))
679 dso__read_running_kernel_build_id(kernel
, machine
);
684 struct process_args
{
688 static void machine__get_kallsyms_filename(struct machine
*machine
, char *buf
,
691 if (machine__is_default_guest(machine
))
692 scnprintf(buf
, bufsz
, "%s", symbol_conf
.default_guest_kallsyms
);
694 scnprintf(buf
, bufsz
, "%s/proc/kallsyms", machine
->root_dir
);
697 const char *ref_reloc_sym_names
[] = {"_text", "_stext", NULL
};
699 /* Figure out the start address of kernel map from /proc/kallsyms.
700 * Returns the name of the start symbol in *symbol_name. Pass in NULL as
701 * symbol_name if it's not that important.
703 static u64
machine__get_running_kernel_start(struct machine
*machine
,
704 const char **symbol_name
)
706 char filename
[PATH_MAX
];
711 machine__get_kallsyms_filename(machine
, filename
, PATH_MAX
);
713 if (symbol__restricted_filename(filename
, "/proc/kallsyms"))
716 for (i
= 0; (name
= ref_reloc_sym_names
[i
]) != NULL
; i
++) {
717 addr
= kallsyms__get_function_start(filename
, name
);
728 int __machine__create_kernel_maps(struct machine
*machine
, struct dso
*kernel
)
731 u64 start
= machine__get_running_kernel_start(machine
, NULL
);
733 for (type
= 0; type
< MAP__NR_TYPES
; ++type
) {
736 machine
->vmlinux_maps
[type
] = map__new2(start
, kernel
, type
);
737 if (machine
->vmlinux_maps
[type
] == NULL
)
740 machine
->vmlinux_maps
[type
]->map_ip
=
741 machine
->vmlinux_maps
[type
]->unmap_ip
=
743 kmap
= map__kmap(machine
->vmlinux_maps
[type
]);
747 kmap
->kmaps
= &machine
->kmaps
;
748 map_groups__insert(&machine
->kmaps
,
749 machine
->vmlinux_maps
[type
]);
755 void machine__destroy_kernel_maps(struct machine
*machine
)
759 for (type
= 0; type
< MAP__NR_TYPES
; ++type
) {
762 if (machine
->vmlinux_maps
[type
] == NULL
)
765 kmap
= map__kmap(machine
->vmlinux_maps
[type
]);
766 map_groups__remove(&machine
->kmaps
,
767 machine
->vmlinux_maps
[type
]);
768 if (kmap
&& kmap
->ref_reloc_sym
) {
770 * ref_reloc_sym is shared among all maps, so free just
773 if (type
== MAP__FUNCTION
) {
774 zfree((char **)&kmap
->ref_reloc_sym
->name
);
775 zfree(&kmap
->ref_reloc_sym
);
777 kmap
->ref_reloc_sym
= NULL
;
780 machine
->vmlinux_maps
[type
] = NULL
;
784 int machines__create_guest_kernel_maps(struct machines
*machines
)
787 struct dirent
**namelist
= NULL
;
793 if (symbol_conf
.default_guest_vmlinux_name
||
794 symbol_conf
.default_guest_modules
||
795 symbol_conf
.default_guest_kallsyms
) {
796 machines__create_kernel_maps(machines
, DEFAULT_GUEST_KERNEL_ID
);
799 if (symbol_conf
.guestmount
) {
800 items
= scandir(symbol_conf
.guestmount
, &namelist
, NULL
, NULL
);
803 for (i
= 0; i
< items
; i
++) {
804 if (!isdigit(namelist
[i
]->d_name
[0])) {
805 /* Filter out . and .. */
808 pid
= (pid_t
)strtol(namelist
[i
]->d_name
, &endp
, 10);
809 if ((*endp
!= '\0') ||
810 (endp
== namelist
[i
]->d_name
) ||
812 pr_debug("invalid directory (%s). Skipping.\n",
813 namelist
[i
]->d_name
);
816 sprintf(path
, "%s/%s/proc/kallsyms",
817 symbol_conf
.guestmount
,
818 namelist
[i
]->d_name
);
819 ret
= access(path
, R_OK
);
821 pr_debug("Can't access file %s\n", path
);
824 machines__create_kernel_maps(machines
, pid
);
833 void machines__destroy_kernel_maps(struct machines
*machines
)
835 struct rb_node
*next
= rb_first(&machines
->guests
);
837 machine__destroy_kernel_maps(&machines
->host
);
840 struct machine
*pos
= rb_entry(next
, struct machine
, rb_node
);
842 next
= rb_next(&pos
->rb_node
);
843 rb_erase(&pos
->rb_node
, &machines
->guests
);
844 machine__delete(pos
);
848 int machines__create_kernel_maps(struct machines
*machines
, pid_t pid
)
850 struct machine
*machine
= machines__findnew(machines
, pid
);
855 return machine__create_kernel_maps(machine
);
858 int machine__load_kallsyms(struct machine
*machine
, const char *filename
,
859 enum map_type type
, symbol_filter_t filter
)
861 struct map
*map
= machine
->vmlinux_maps
[type
];
862 int ret
= dso__load_kallsyms(map
->dso
, filename
, map
, filter
);
865 dso__set_loaded(map
->dso
, type
);
867 * Since /proc/kallsyms will have multiple sessions for the
868 * kernel, with modules between them, fixup the end of all
871 __map_groups__fixup_end(&machine
->kmaps
, type
);
877 int machine__load_vmlinux_path(struct machine
*machine
, enum map_type type
,
878 symbol_filter_t filter
)
880 struct map
*map
= machine
->vmlinux_maps
[type
];
881 int ret
= dso__load_vmlinux_path(map
->dso
, map
, filter
);
884 dso__set_loaded(map
->dso
, type
);
889 static void map_groups__fixup_end(struct map_groups
*mg
)
892 for (i
= 0; i
< MAP__NR_TYPES
; ++i
)
893 __map_groups__fixup_end(mg
, i
);
896 static char *get_kernel_version(const char *root_dir
)
898 char version
[PATH_MAX
];
901 const char *prefix
= "Linux version ";
903 sprintf(version
, "%s/proc/version", root_dir
);
904 file
= fopen(version
, "r");
909 tmp
= fgets(version
, sizeof(version
), file
);
912 name
= strstr(version
, prefix
);
915 name
+= strlen(prefix
);
916 tmp
= strchr(name
, ' ');
923 static bool is_kmod_dso(struct dso
*dso
)
925 return dso
->symtab_type
== DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE
||
926 dso
->symtab_type
== DSO_BINARY_TYPE__GUEST_KMODULE
;
929 static int map_groups__set_module_path(struct map_groups
*mg
, const char *path
,
935 map
= map_groups__find_by_name(mg
, MAP__FUNCTION
, m
->name
);
939 long_name
= strdup(path
);
940 if (long_name
== NULL
)
943 dso__set_long_name(map
->dso
, long_name
, true);
944 dso__kernel_module_get_build_id(map
->dso
, "");
947 * Full name could reveal us kmod compression, so
948 * we need to update the symtab_type if needed.
950 if (m
->comp
&& is_kmod_dso(map
->dso
))
951 map
->dso
->symtab_type
++;
956 static int map_groups__set_modules_path_dir(struct map_groups
*mg
,
957 const char *dir_name
, int depth
)
960 DIR *dir
= opendir(dir_name
);
964 pr_debug("%s: cannot open %s dir\n", __func__
, dir_name
);
968 while ((dent
= readdir(dir
)) != NULL
) {
972 /*sshfs might return bad dent->d_type, so we have to stat*/
973 snprintf(path
, sizeof(path
), "%s/%s", dir_name
, dent
->d_name
);
977 if (S_ISDIR(st
.st_mode
)) {
978 if (!strcmp(dent
->d_name
, ".") ||
979 !strcmp(dent
->d_name
, ".."))
982 /* Do not follow top-level source and build symlinks */
984 if (!strcmp(dent
->d_name
, "source") ||
985 !strcmp(dent
->d_name
, "build"))
989 ret
= map_groups__set_modules_path_dir(mg
, path
,
996 ret
= kmod_path__parse_name(&m
, dent
->d_name
);
1001 ret
= map_groups__set_module_path(mg
, path
, &m
);
1015 static int machine__set_modules_path(struct machine
*machine
)
1018 char modules_path
[PATH_MAX
];
1020 version
= get_kernel_version(machine
->root_dir
);
1024 snprintf(modules_path
, sizeof(modules_path
), "%s/lib/modules/%s",
1025 machine
->root_dir
, version
);
1028 return map_groups__set_modules_path_dir(&machine
->kmaps
, modules_path
, 0);
1031 static int machine__create_module(void *arg
, const char *name
, u64 start
)
1033 struct machine
*machine
= arg
;
1036 map
= machine__findnew_module_map(machine
, start
, name
);
1040 dso__kernel_module_get_build_id(map
->dso
, machine
->root_dir
);
1045 static int machine__create_modules(struct machine
*machine
)
1047 const char *modules
;
1048 char path
[PATH_MAX
];
1050 if (machine__is_default_guest(machine
)) {
1051 modules
= symbol_conf
.default_guest_modules
;
1053 snprintf(path
, PATH_MAX
, "%s/proc/modules", machine
->root_dir
);
1057 if (symbol__restricted_filename(modules
, "/proc/modules"))
1060 if (modules__parse(modules
, machine
, machine__create_module
))
1063 if (!machine__set_modules_path(machine
))
1066 pr_debug("Problems setting modules path maps, continuing anyway...\n");
1071 int machine__create_kernel_maps(struct machine
*machine
)
1073 struct dso
*kernel
= machine__get_kernel(machine
);
1075 u64 addr
= machine__get_running_kernel_start(machine
, &name
);
1079 if (kernel
== NULL
||
1080 __machine__create_kernel_maps(machine
, kernel
) < 0)
1083 if (symbol_conf
.use_modules
&& machine__create_modules(machine
) < 0) {
1084 if (machine__is_host(machine
))
1085 pr_debug("Problems creating module maps, "
1086 "continuing anyway...\n");
1088 pr_debug("Problems creating module maps for guest %d, "
1089 "continuing anyway...\n", machine
->pid
);
1093 * Now that we have all the maps created, just set the ->end of them:
1095 map_groups__fixup_end(&machine
->kmaps
);
1097 if (maps__set_kallsyms_ref_reloc_sym(machine
->vmlinux_maps
, name
,
1099 machine__destroy_kernel_maps(machine
);
1106 static void machine__set_kernel_mmap_len(struct machine
*machine
,
1107 union perf_event
*event
)
1111 for (i
= 0; i
< MAP__NR_TYPES
; i
++) {
1112 machine
->vmlinux_maps
[i
]->start
= event
->mmap
.start
;
1113 machine
->vmlinux_maps
[i
]->end
= (event
->mmap
.start
+
1116 * Be a bit paranoid here, some perf.data file came with
1117 * a zero sized synthesized MMAP event for the kernel.
1119 if (machine
->vmlinux_maps
[i
]->end
== 0)
1120 machine
->vmlinux_maps
[i
]->end
= ~0ULL;
1124 static bool machine__uses_kcore(struct machine
*machine
)
1128 list_for_each_entry(dso
, &machine
->dsos
.head
, node
) {
1129 if (dso__is_kcore(dso
))
1136 static int machine__process_kernel_mmap_event(struct machine
*machine
,
1137 union perf_event
*event
)
1140 char kmmap_prefix
[PATH_MAX
];
1141 enum dso_kernel_type kernel_type
;
1142 bool is_kernel_mmap
;
1144 /* If we have maps from kcore then we do not need or want any others */
1145 if (machine__uses_kcore(machine
))
1148 machine__mmap_name(machine
, kmmap_prefix
, sizeof(kmmap_prefix
));
1149 if (machine__is_host(machine
))
1150 kernel_type
= DSO_TYPE_KERNEL
;
1152 kernel_type
= DSO_TYPE_GUEST_KERNEL
;
1154 is_kernel_mmap
= memcmp(event
->mmap
.filename
,
1156 strlen(kmmap_prefix
) - 1) == 0;
1157 if (event
->mmap
.filename
[0] == '/' ||
1158 (!is_kernel_mmap
&& event
->mmap
.filename
[0] == '[')) {
1159 map
= machine__findnew_module_map(machine
, event
->mmap
.start
,
1160 event
->mmap
.filename
);
1164 map
->end
= map
->start
+ event
->mmap
.len
;
1165 } else if (is_kernel_mmap
) {
1166 const char *symbol_name
= (event
->mmap
.filename
+
1167 strlen(kmmap_prefix
));
1169 * Should be there already, from the build-id table in
1172 struct dso
*kernel
= NULL
;
1175 pthread_rwlock_rdlock(&machine
->dsos
.lock
);
1177 list_for_each_entry(dso
, &machine
->dsos
.head
, node
) {
1180 * The cpumode passed to is_kernel_module is not the
1181 * cpumode of *this* event. If we insist on passing
1182 * correct cpumode to is_kernel_module, we should
1183 * record the cpumode when we adding this dso to the
1186 * However we don't really need passing correct
1187 * cpumode. We know the correct cpumode must be kernel
1188 * mode (if not, we should not link it onto kernel_dsos
1191 * Therefore, we pass PERF_RECORD_MISC_CPUMODE_UNKNOWN.
1192 * is_kernel_module() treats it as a kernel cpumode.
1196 is_kernel_module(dso
->long_name
,
1197 PERF_RECORD_MISC_CPUMODE_UNKNOWN
))
1205 pthread_rwlock_unlock(&machine
->dsos
.lock
);
1208 kernel
= machine__findnew_dso(machine
, kmmap_prefix
);
1212 kernel
->kernel
= kernel_type
;
1213 if (__machine__create_kernel_maps(machine
, kernel
) < 0) {
1218 if (strstr(kernel
->long_name
, "vmlinux"))
1219 dso__set_short_name(kernel
, "[kernel.vmlinux]", false);
1221 machine__set_kernel_mmap_len(machine
, event
);
1224 * Avoid using a zero address (kptr_restrict) for the ref reloc
1225 * symbol. Effectively having zero here means that at record
1226 * time /proc/sys/kernel/kptr_restrict was non zero.
1228 if (event
->mmap
.pgoff
!= 0) {
1229 maps__set_kallsyms_ref_reloc_sym(machine
->vmlinux_maps
,
1234 if (machine__is_default_guest(machine
)) {
1236 * preload dso of guest kernel and modules
1238 dso__load(kernel
, machine
->vmlinux_maps
[MAP__FUNCTION
],
1247 int machine__process_mmap2_event(struct machine
*machine
,
1248 union perf_event
*event
,
1249 struct perf_sample
*sample __maybe_unused
)
1251 u8 cpumode
= event
->header
.misc
& PERF_RECORD_MISC_CPUMODE_MASK
;
1252 struct thread
*thread
;
1258 perf_event__fprintf_mmap2(event
, stdout
);
1260 if (cpumode
== PERF_RECORD_MISC_GUEST_KERNEL
||
1261 cpumode
== PERF_RECORD_MISC_KERNEL
) {
1262 ret
= machine__process_kernel_mmap_event(machine
, event
);
1268 thread
= machine__findnew_thread(machine
, event
->mmap2
.pid
,
1273 if (event
->header
.misc
& PERF_RECORD_MISC_MMAP_DATA
)
1274 type
= MAP__VARIABLE
;
1276 type
= MAP__FUNCTION
;
1278 map
= map__new(machine
, event
->mmap2
.start
,
1279 event
->mmap2
.len
, event
->mmap2
.pgoff
,
1280 event
->mmap2
.pid
, event
->mmap2
.maj
,
1281 event
->mmap2
.min
, event
->mmap2
.ino
,
1282 event
->mmap2
.ino_generation
,
1285 event
->mmap2
.filename
, type
, thread
);
1288 goto out_problem_map
;
1290 thread__insert_map(thread
, map
);
1291 thread__put(thread
);
1296 thread__put(thread
);
1298 dump_printf("problem processing PERF_RECORD_MMAP2, skipping event.\n");
1302 int machine__process_mmap_event(struct machine
*machine
, union perf_event
*event
,
1303 struct perf_sample
*sample __maybe_unused
)
1305 u8 cpumode
= event
->header
.misc
& PERF_RECORD_MISC_CPUMODE_MASK
;
1306 struct thread
*thread
;
1312 perf_event__fprintf_mmap(event
, stdout
);
1314 if (cpumode
== PERF_RECORD_MISC_GUEST_KERNEL
||
1315 cpumode
== PERF_RECORD_MISC_KERNEL
) {
1316 ret
= machine__process_kernel_mmap_event(machine
, event
);
1322 thread
= machine__findnew_thread(machine
, event
->mmap
.pid
,
1327 if (event
->header
.misc
& PERF_RECORD_MISC_MMAP_DATA
)
1328 type
= MAP__VARIABLE
;
1330 type
= MAP__FUNCTION
;
1332 map
= map__new(machine
, event
->mmap
.start
,
1333 event
->mmap
.len
, event
->mmap
.pgoff
,
1334 event
->mmap
.pid
, 0, 0, 0, 0, 0, 0,
1335 event
->mmap
.filename
,
1339 goto out_problem_map
;
1341 thread__insert_map(thread
, map
);
1342 thread__put(thread
);
1347 thread__put(thread
);
1349 dump_printf("problem processing PERF_RECORD_MMAP, skipping event.\n");
1353 static void __machine__remove_thread(struct machine
*machine
, struct thread
*th
, bool lock
)
1355 if (machine
->last_match
== th
)
1356 machine
->last_match
= NULL
;
1358 BUG_ON(atomic_read(&th
->refcnt
) == 0);
1360 pthread_rwlock_wrlock(&machine
->threads_lock
);
1361 rb_erase_init(&th
->rb_node
, &machine
->threads
);
1362 RB_CLEAR_NODE(&th
->rb_node
);
1364 * Move it first to the dead_threads list, then drop the reference,
1365 * if this is the last reference, then the thread__delete destructor
1366 * will be called and we will remove it from the dead_threads list.
1368 list_add_tail(&th
->node
, &machine
->dead_threads
);
1370 pthread_rwlock_unlock(&machine
->threads_lock
);
1374 void machine__remove_thread(struct machine
*machine
, struct thread
*th
)
1376 return __machine__remove_thread(machine
, th
, true);
1379 int machine__process_fork_event(struct machine
*machine
, union perf_event
*event
,
1380 struct perf_sample
*sample
)
1382 struct thread
*thread
= machine__find_thread(machine
,
1385 struct thread
*parent
= machine__findnew_thread(machine
,
1390 /* if a thread currently exists for the thread id remove it */
1391 if (thread
!= NULL
) {
1392 machine__remove_thread(machine
, thread
);
1393 thread__put(thread
);
1396 thread
= machine__findnew_thread(machine
, event
->fork
.pid
,
1399 perf_event__fprintf_task(event
, stdout
);
1401 if (thread
== NULL
|| parent
== NULL
||
1402 thread__fork(thread
, parent
, sample
->time
) < 0) {
1403 dump_printf("problem processing PERF_RECORD_FORK, skipping event.\n");
1406 thread__put(thread
);
1407 thread__put(parent
);
1412 int machine__process_exit_event(struct machine
*machine
, union perf_event
*event
,
1413 struct perf_sample
*sample __maybe_unused
)
1415 struct thread
*thread
= machine__find_thread(machine
,
1420 perf_event__fprintf_task(event
, stdout
);
1422 if (thread
!= NULL
) {
1423 thread__exited(thread
);
1424 thread__put(thread
);
1430 int machine__process_event(struct machine
*machine
, union perf_event
*event
,
1431 struct perf_sample
*sample
)
1435 switch (event
->header
.type
) {
1436 case PERF_RECORD_COMM
:
1437 ret
= machine__process_comm_event(machine
, event
, sample
); break;
1438 case PERF_RECORD_MMAP
:
1439 ret
= machine__process_mmap_event(machine
, event
, sample
); break;
1440 case PERF_RECORD_MMAP2
:
1441 ret
= machine__process_mmap2_event(machine
, event
, sample
); break;
1442 case PERF_RECORD_FORK
:
1443 ret
= machine__process_fork_event(machine
, event
, sample
); break;
1444 case PERF_RECORD_EXIT
:
1445 ret
= machine__process_exit_event(machine
, event
, sample
); break;
1446 case PERF_RECORD_LOST
:
1447 ret
= machine__process_lost_event(machine
, event
, sample
); break;
1448 case PERF_RECORD_AUX
:
1449 ret
= machine__process_aux_event(machine
, event
); break;
1450 case PERF_RECORD_ITRACE_START
:
1451 ret
= machine__process_itrace_start_event(machine
, event
); break;
1452 case PERF_RECORD_LOST_SAMPLES
:
1453 ret
= machine__process_lost_samples_event(machine
, event
, sample
); break;
1462 static bool symbol__match_regex(struct symbol
*sym
, regex_t
*regex
)
1464 if (sym
->name
&& !regexec(regex
, sym
->name
, 0, NULL
, 0))
1469 static void ip__resolve_ams(struct thread
*thread
,
1470 struct addr_map_symbol
*ams
,
1473 struct addr_location al
;
1475 memset(&al
, 0, sizeof(al
));
1477 * We cannot use the header.misc hint to determine whether a
1478 * branch stack address is user, kernel, guest, hypervisor.
1479 * Branches may straddle the kernel/user/hypervisor boundaries.
1480 * Thus, we have to try consecutively until we find a match
1481 * or else, the symbol is unknown
1483 thread__find_cpumode_addr_location(thread
, MAP__FUNCTION
, ip
, &al
);
1486 ams
->al_addr
= al
.addr
;
1491 static void ip__resolve_data(struct thread
*thread
,
1492 u8 m
, struct addr_map_symbol
*ams
, u64 addr
)
1494 struct addr_location al
;
1496 memset(&al
, 0, sizeof(al
));
1498 thread__find_addr_location(thread
, m
, MAP__VARIABLE
, addr
, &al
);
1499 if (al
.map
== NULL
) {
1501 * some shared data regions have execute bit set which puts
1502 * their mapping in the MAP__FUNCTION type array.
1503 * Check there as a fallback option before dropping the sample.
1505 thread__find_addr_location(thread
, m
, MAP__FUNCTION
, addr
, &al
);
1509 ams
->al_addr
= al
.addr
;
1514 struct mem_info
*sample__resolve_mem(struct perf_sample
*sample
,
1515 struct addr_location
*al
)
1517 struct mem_info
*mi
= zalloc(sizeof(*mi
));
1522 ip__resolve_ams(al
->thread
, &mi
->iaddr
, sample
->ip
);
1523 ip__resolve_data(al
->thread
, al
->cpumode
, &mi
->daddr
, sample
->addr
);
1524 mi
->data_src
.val
= sample
->data_src
;
1529 static int add_callchain_ip(struct thread
*thread
,
1530 struct symbol
**parent
,
1531 struct addr_location
*root_al
,
1535 struct addr_location al
;
1540 thread__find_cpumode_addr_location(thread
, MAP__FUNCTION
,
1543 if (ip
>= PERF_CONTEXT_MAX
) {
1545 case PERF_CONTEXT_HV
:
1546 *cpumode
= PERF_RECORD_MISC_HYPERVISOR
;
1548 case PERF_CONTEXT_KERNEL
:
1549 *cpumode
= PERF_RECORD_MISC_KERNEL
;
1551 case PERF_CONTEXT_USER
:
1552 *cpumode
= PERF_RECORD_MISC_USER
;
1555 pr_debug("invalid callchain context: "
1556 "%"PRId64
"\n", (s64
) ip
);
1558 * It seems the callchain is corrupted.
1561 callchain_cursor_reset(&callchain_cursor
);
1566 thread__find_addr_location(thread
, *cpumode
, MAP__FUNCTION
,
1570 if (al
.sym
!= NULL
) {
1571 if (sort__has_parent
&& !*parent
&&
1572 symbol__match_regex(al
.sym
, &parent_regex
))
1574 else if (have_ignore_callees
&& root_al
&&
1575 symbol__match_regex(al
.sym
, &ignore_callees_regex
)) {
1576 /* Treat this symbol as the root,
1577 forgetting its callees. */
1579 callchain_cursor_reset(&callchain_cursor
);
1583 return callchain_cursor_append(&callchain_cursor
, al
.addr
, al
.map
, al
.sym
);
1586 struct branch_info
*sample__resolve_bstack(struct perf_sample
*sample
,
1587 struct addr_location
*al
)
1590 const struct branch_stack
*bs
= sample
->branch_stack
;
1591 struct branch_info
*bi
= calloc(bs
->nr
, sizeof(struct branch_info
));
1596 for (i
= 0; i
< bs
->nr
; i
++) {
1597 ip__resolve_ams(al
->thread
, &bi
[i
].to
, bs
->entries
[i
].to
);
1598 ip__resolve_ams(al
->thread
, &bi
[i
].from
, bs
->entries
[i
].from
);
1599 bi
[i
].flags
= bs
->entries
[i
].flags
;
1606 #define NO_ENTRY 0xff
1608 #define PERF_MAX_BRANCH_DEPTH 127
1611 static int remove_loops(struct branch_entry
*l
, int nr
)
1614 unsigned char chash
[CHASHSZ
];
1616 memset(chash
, NO_ENTRY
, sizeof(chash
));
1618 BUG_ON(PERF_MAX_BRANCH_DEPTH
> 255);
1620 for (i
= 0; i
< nr
; i
++) {
1621 int h
= hash_64(l
[i
].from
, CHASHBITS
) % CHASHSZ
;
1623 /* no collision handling for now */
1624 if (chash
[h
] == NO_ENTRY
) {
1626 } else if (l
[chash
[h
]].from
== l
[i
].from
) {
1627 bool is_loop
= true;
1628 /* check if it is a real loop */
1630 for (j
= chash
[h
]; j
< i
&& i
+ off
< nr
; j
++, off
++)
1631 if (l
[j
].from
!= l
[i
+ off
].from
) {
1636 memmove(l
+ i
, l
+ i
+ off
,
1637 (nr
- (i
+ off
)) * sizeof(*l
));
1646 * Recolve LBR callstack chain sample
1648 * 1 on success get LBR callchain information
1649 * 0 no available LBR callchain information, should try fp
1650 * negative error code on other errors.
1652 static int resolve_lbr_callchain_sample(struct thread
*thread
,
1653 struct perf_sample
*sample
,
1654 struct symbol
**parent
,
1655 struct addr_location
*root_al
,
1658 struct ip_callchain
*chain
= sample
->callchain
;
1659 int chain_nr
= min(max_stack
, (int)chain
->nr
);
1660 u8 cpumode
= PERF_RECORD_MISC_USER
;
1664 for (i
= 0; i
< chain_nr
; i
++) {
1665 if (chain
->ips
[i
] == PERF_CONTEXT_USER
)
1669 /* LBR only affects the user callchain */
1670 if (i
!= chain_nr
) {
1671 struct branch_stack
*lbr_stack
= sample
->branch_stack
;
1672 int lbr_nr
= lbr_stack
->nr
;
1674 * LBR callstack can only get user call chain.
1675 * The mix_chain_nr is kernel call chain
1676 * number plus LBR user call chain number.
1677 * i is kernel call chain number,
1678 * 1 is PERF_CONTEXT_USER,
1679 * lbr_nr + 1 is the user call chain number.
1680 * For details, please refer to the comments
1681 * in callchain__printf
1683 int mix_chain_nr
= i
+ 1 + lbr_nr
+ 1;
1685 if (mix_chain_nr
> PERF_MAX_STACK_DEPTH
+ PERF_MAX_BRANCH_DEPTH
) {
1686 pr_warning("corrupted callchain. skipping...\n");
1690 for (j
= 0; j
< mix_chain_nr
; j
++) {
1691 if (callchain_param
.order
== ORDER_CALLEE
) {
1695 ip
= lbr_stack
->entries
[j
- i
- 2].from
;
1697 ip
= lbr_stack
->entries
[0].to
;
1700 ip
= lbr_stack
->entries
[lbr_nr
- j
- 1].from
;
1701 else if (j
> lbr_nr
)
1702 ip
= chain
->ips
[i
+ 1 - (j
- lbr_nr
)];
1704 ip
= lbr_stack
->entries
[0].to
;
1707 err
= add_callchain_ip(thread
, parent
, root_al
, &cpumode
, ip
);
1709 return (err
< 0) ? err
: 0;
1717 static int thread__resolve_callchain_sample(struct thread
*thread
,
1718 struct perf_evsel
*evsel
,
1719 struct perf_sample
*sample
,
1720 struct symbol
**parent
,
1721 struct addr_location
*root_al
,
1724 struct branch_stack
*branch
= sample
->branch_stack
;
1725 struct ip_callchain
*chain
= sample
->callchain
;
1726 int chain_nr
= min(max_stack
, (int)chain
->nr
);
1727 u8 cpumode
= PERF_RECORD_MISC_USER
;
1732 callchain_cursor_reset(&callchain_cursor
);
1734 if (has_branch_callstack(evsel
)) {
1735 err
= resolve_lbr_callchain_sample(thread
, sample
, parent
,
1736 root_al
, max_stack
);
1738 return (err
< 0) ? err
: 0;
1742 * Based on DWARF debug information, some architectures skip
1743 * a callchain entry saved by the kernel.
1745 if (chain
->nr
< PERF_MAX_STACK_DEPTH
)
1746 skip_idx
= arch_skip_callchain_idx(thread
, chain
);
1749 * Add branches to call stack for easier browsing. This gives
1750 * more context for a sample than just the callers.
1752 * This uses individual histograms of paths compared to the
1753 * aggregated histograms the normal LBR mode uses.
1755 * Limitations for now:
1756 * - No extra filters
1757 * - No annotations (should annotate somehow)
1760 if (branch
&& callchain_param
.branch_callstack
) {
1761 int nr
= min(max_stack
, (int)branch
->nr
);
1762 struct branch_entry be
[nr
];
1764 if (branch
->nr
> PERF_MAX_BRANCH_DEPTH
) {
1765 pr_warning("corrupted branch chain. skipping...\n");
1769 for (i
= 0; i
< nr
; i
++) {
1770 if (callchain_param
.order
== ORDER_CALLEE
) {
1771 be
[i
] = branch
->entries
[i
];
1773 * Check for overlap into the callchain.
1774 * The return address is one off compared to
1775 * the branch entry. To adjust for this
1776 * assume the calling instruction is not longer
1779 if (i
== skip_idx
||
1780 chain
->ips
[first_call
] >= PERF_CONTEXT_MAX
)
1782 else if (be
[i
].from
< chain
->ips
[first_call
] &&
1783 be
[i
].from
>= chain
->ips
[first_call
] - 8)
1786 be
[i
] = branch
->entries
[branch
->nr
- i
- 1];
1789 nr
= remove_loops(be
, nr
);
1791 for (i
= 0; i
< nr
; i
++) {
1792 err
= add_callchain_ip(thread
, parent
, root_al
,
1795 err
= add_callchain_ip(thread
, parent
, root_al
,
1806 if (chain
->nr
> PERF_MAX_STACK_DEPTH
) {
1807 pr_warning("corrupted callchain. skipping...\n");
1811 for (i
= first_call
; i
< chain_nr
; i
++) {
1814 if (callchain_param
.order
== ORDER_CALLEE
)
1817 j
= chain
->nr
- i
- 1;
1819 #ifdef HAVE_SKIP_CALLCHAIN_IDX
1825 err
= add_callchain_ip(thread
, parent
, root_al
, &cpumode
, ip
);
1828 return (err
< 0) ? err
: 0;
1834 static int unwind_entry(struct unwind_entry
*entry
, void *arg
)
1836 struct callchain_cursor
*cursor
= arg
;
1837 return callchain_cursor_append(cursor
, entry
->ip
,
1838 entry
->map
, entry
->sym
);
1841 int thread__resolve_callchain(struct thread
*thread
,
1842 struct perf_evsel
*evsel
,
1843 struct perf_sample
*sample
,
1844 struct symbol
**parent
,
1845 struct addr_location
*root_al
,
1848 int ret
= thread__resolve_callchain_sample(thread
, evsel
,
1850 root_al
, max_stack
);
1854 /* Can we do dwarf post unwind? */
1855 if (!((evsel
->attr
.sample_type
& PERF_SAMPLE_REGS_USER
) &&
1856 (evsel
->attr
.sample_type
& PERF_SAMPLE_STACK_USER
)))
1859 /* Bail out if nothing was captured. */
1860 if ((!sample
->user_regs
.regs
) ||
1861 (!sample
->user_stack
.size
))
1864 return unwind__get_entries(unwind_entry
, &callchain_cursor
,
1865 thread
, sample
, max_stack
);
1869 int machine__for_each_thread(struct machine
*machine
,
1870 int (*fn
)(struct thread
*thread
, void *p
),
1874 struct thread
*thread
;
1877 for (nd
= rb_first(&machine
->threads
); nd
; nd
= rb_next(nd
)) {
1878 thread
= rb_entry(nd
, struct thread
, rb_node
);
1879 rc
= fn(thread
, priv
);
1884 list_for_each_entry(thread
, &machine
->dead_threads
, node
) {
1885 rc
= fn(thread
, priv
);
1892 int machines__for_each_thread(struct machines
*machines
,
1893 int (*fn
)(struct thread
*thread
, void *p
),
1899 rc
= machine__for_each_thread(&machines
->host
, fn
, priv
);
1903 for (nd
= rb_first(&machines
->guests
); nd
; nd
= rb_next(nd
)) {
1904 struct machine
*machine
= rb_entry(nd
, struct machine
, rb_node
);
1906 rc
= machine__for_each_thread(machine
, fn
, priv
);
1913 int __machine__synthesize_threads(struct machine
*machine
, struct perf_tool
*tool
,
1914 struct target
*target
, struct thread_map
*threads
,
1915 perf_event__handler_t process
, bool data_mmap
,
1916 unsigned int proc_map_timeout
)
1918 if (target__has_task(target
))
1919 return perf_event__synthesize_thread_map(tool
, threads
, process
, machine
, data_mmap
, proc_map_timeout
);
1920 else if (target__has_cpu(target
))
1921 return perf_event__synthesize_threads(tool
, process
, machine
, data_mmap
, proc_map_timeout
);
1922 /* command specified */
1926 pid_t
machine__get_current_tid(struct machine
*machine
, int cpu
)
1928 if (cpu
< 0 || cpu
>= MAX_NR_CPUS
|| !machine
->current_tid
)
1931 return machine
->current_tid
[cpu
];
1934 int machine__set_current_tid(struct machine
*machine
, int cpu
, pid_t pid
,
1937 struct thread
*thread
;
1942 if (!machine
->current_tid
) {
1945 machine
->current_tid
= calloc(MAX_NR_CPUS
, sizeof(pid_t
));
1946 if (!machine
->current_tid
)
1948 for (i
= 0; i
< MAX_NR_CPUS
; i
++)
1949 machine
->current_tid
[i
] = -1;
1952 if (cpu
>= MAX_NR_CPUS
) {
1953 pr_err("Requested CPU %d too large. ", cpu
);
1954 pr_err("Consider raising MAX_NR_CPUS\n");
1958 machine
->current_tid
[cpu
] = tid
;
1960 thread
= machine__findnew_thread(machine
, pid
, tid
);
1965 thread__put(thread
);
1970 int machine__get_kernel_start(struct machine
*machine
)
1972 struct map
*map
= machine__kernel_map(machine
, MAP__FUNCTION
);
1976 * The only addresses above 2^63 are kernel addresses of a 64-bit
1977 * kernel. Note that addresses are unsigned so that on a 32-bit system
1978 * all addresses including kernel addresses are less than 2^32. In
1979 * that case (32-bit system), if the kernel mapping is unknown, all
1980 * addresses will be assumed to be in user space - see
1981 * machine__kernel_ip().
1983 machine
->kernel_start
= 1ULL << 63;
1985 err
= map__load(map
, machine
->symbol_filter
);
1987 machine
->kernel_start
= map
->start
;
1992 struct dso
*machine__findnew_dso(struct machine
*machine
, const char *filename
)
1994 return dsos__findnew(&machine
->dsos
, filename
);