1 #include <linux/types.h>
11 #include "thread_map.h"
12 #include "symbol/kallsyms.h"
16 static const char *perf_event__names
[] = {
18 [PERF_RECORD_MMAP
] = "MMAP",
19 [PERF_RECORD_MMAP2
] = "MMAP2",
20 [PERF_RECORD_LOST
] = "LOST",
21 [PERF_RECORD_COMM
] = "COMM",
22 [PERF_RECORD_EXIT
] = "EXIT",
23 [PERF_RECORD_THROTTLE
] = "THROTTLE",
24 [PERF_RECORD_UNTHROTTLE
] = "UNTHROTTLE",
25 [PERF_RECORD_FORK
] = "FORK",
26 [PERF_RECORD_READ
] = "READ",
27 [PERF_RECORD_SAMPLE
] = "SAMPLE",
28 [PERF_RECORD_AUX
] = "AUX",
29 [PERF_RECORD_ITRACE_START
] = "ITRACE_START",
30 [PERF_RECORD_LOST_SAMPLES
] = "LOST_SAMPLES",
31 [PERF_RECORD_SWITCH
] = "SWITCH",
32 [PERF_RECORD_SWITCH_CPU_WIDE
] = "SWITCH_CPU_WIDE",
33 [PERF_RECORD_HEADER_ATTR
] = "ATTR",
34 [PERF_RECORD_HEADER_EVENT_TYPE
] = "EVENT_TYPE",
35 [PERF_RECORD_HEADER_TRACING_DATA
] = "TRACING_DATA",
36 [PERF_RECORD_HEADER_BUILD_ID
] = "BUILD_ID",
37 [PERF_RECORD_FINISHED_ROUND
] = "FINISHED_ROUND",
38 [PERF_RECORD_ID_INDEX
] = "ID_INDEX",
39 [PERF_RECORD_AUXTRACE_INFO
] = "AUXTRACE_INFO",
40 [PERF_RECORD_AUXTRACE
] = "AUXTRACE",
41 [PERF_RECORD_AUXTRACE_ERROR
] = "AUXTRACE_ERROR",
42 [PERF_RECORD_THREAD_MAP
] = "THREAD_MAP",
43 [PERF_RECORD_CPU_MAP
] = "CPU_MAP",
44 [PERF_RECORD_STAT_CONFIG
] = "STAT_CONFIG",
45 [PERF_RECORD_STAT
] = "STAT",
46 [PERF_RECORD_STAT_ROUND
] = "STAT_ROUND",
47 [PERF_RECORD_EVENT_UPDATE
] = "EVENT_UPDATE",
50 const char *perf_event__name(unsigned int id
)
52 if (id
>= ARRAY_SIZE(perf_event__names
))
54 if (!perf_event__names
[id
])
56 return perf_event__names
[id
];
59 static int perf_tool__process_synth_event(struct perf_tool
*tool
,
60 union perf_event
*event
,
61 struct machine
*machine
,
62 perf_event__handler_t process
)
64 struct perf_sample synth_sample
= {
71 .cpumode
= event
->header
.misc
& PERF_RECORD_MISC_CPUMODE_MASK
,
74 return process(tool
, event
, &synth_sample
, machine
);
78 * Assumes that the first 4095 bytes of /proc/pid/stat contains
79 * the comm, tgid and ppid.
81 static int perf_event__get_comm_ids(pid_t pid
, char *comm
, size_t len
,
82 pid_t
*tgid
, pid_t
*ppid
)
84 char filename
[PATH_MAX
];
89 char *nl
, *name
, *tgids
, *ppids
;
94 snprintf(filename
, sizeof(filename
), "/proc/%d/status", pid
);
96 fd
= open(filename
, O_RDONLY
);
98 pr_debug("couldn't open %s\n", filename
);
102 n
= read(fd
, bf
, sizeof(bf
) - 1);
105 pr_warning("Couldn't get COMM, tigd and ppid for pid %d\n",
111 name
= strstr(bf
, "Name:");
112 tgids
= strstr(bf
, "Tgid:");
113 ppids
= strstr(bf
, "PPid:");
116 name
+= 5; /* strlen("Name:") */
118 while (*name
&& isspace(*name
))
121 nl
= strchr(name
, '\n');
128 memcpy(comm
, name
, size
);
131 pr_debug("Name: string not found for pid %d\n", pid
);
135 tgids
+= 5; /* strlen("Tgid:") */
138 pr_debug("Tgid: string not found for pid %d\n", pid
);
142 ppids
+= 5; /* strlen("PPid:") */
145 pr_debug("PPid: string not found for pid %d\n", pid
);
151 static int perf_event__prepare_comm(union perf_event
*event
, pid_t pid
,
152 struct machine
*machine
,
153 pid_t
*tgid
, pid_t
*ppid
)
159 memset(&event
->comm
, 0, sizeof(event
->comm
));
161 if (machine__is_host(machine
)) {
162 if (perf_event__get_comm_ids(pid
, event
->comm
.comm
,
163 sizeof(event
->comm
.comm
),
168 *tgid
= machine
->pid
;
174 event
->comm
.pid
= *tgid
;
175 event
->comm
.header
.type
= PERF_RECORD_COMM
;
177 size
= strlen(event
->comm
.comm
) + 1;
178 size
= PERF_ALIGN(size
, sizeof(u64
));
179 memset(event
->comm
.comm
+ size
, 0, machine
->id_hdr_size
);
180 event
->comm
.header
.size
= (sizeof(event
->comm
) -
181 (sizeof(event
->comm
.comm
) - size
) +
182 machine
->id_hdr_size
);
183 event
->comm
.tid
= pid
;
188 pid_t
perf_event__synthesize_comm(struct perf_tool
*tool
,
189 union perf_event
*event
, pid_t pid
,
190 perf_event__handler_t process
,
191 struct machine
*machine
)
195 if (perf_event__prepare_comm(event
, pid
, machine
, &tgid
, &ppid
) != 0)
198 if (perf_tool__process_synth_event(tool
, event
, machine
, process
) != 0)
204 static int perf_event__synthesize_fork(struct perf_tool
*tool
,
205 union perf_event
*event
,
206 pid_t pid
, pid_t tgid
, pid_t ppid
,
207 perf_event__handler_t process
,
208 struct machine
*machine
)
210 memset(&event
->fork
, 0, sizeof(event
->fork
) + machine
->id_hdr_size
);
213 * for main thread set parent to ppid from status file. For other
214 * threads set parent pid to main thread. ie., assume main thread
215 * spawns all threads in a process
218 event
->fork
.ppid
= ppid
;
219 event
->fork
.ptid
= ppid
;
221 event
->fork
.ppid
= tgid
;
222 event
->fork
.ptid
= tgid
;
224 event
->fork
.pid
= tgid
;
225 event
->fork
.tid
= pid
;
226 event
->fork
.header
.type
= PERF_RECORD_FORK
;
228 event
->fork
.header
.size
= (sizeof(event
->fork
) + machine
->id_hdr_size
);
230 if (perf_tool__process_synth_event(tool
, event
, machine
, process
) != 0)
236 int perf_event__synthesize_mmap_events(struct perf_tool
*tool
,
237 union perf_event
*event
,
238 pid_t pid
, pid_t tgid
,
239 perf_event__handler_t process
,
240 struct machine
*machine
,
242 unsigned int proc_map_timeout
)
244 char filename
[PATH_MAX
];
246 unsigned long long t
;
247 bool truncation
= false;
248 unsigned long long timeout
= proc_map_timeout
* 1000000ULL;
251 if (machine__is_default_guest(machine
))
254 snprintf(filename
, sizeof(filename
), "%s/proc/%d/maps",
255 machine
->root_dir
, pid
);
257 fp
= fopen(filename
, "r");
260 * We raced with a task exiting - just return:
262 pr_debug("couldn't open %s\n", filename
);
266 event
->header
.type
= PERF_RECORD_MMAP2
;
272 char execname
[PATH_MAX
];
273 char anonstr
[] = "//anon";
278 if (fgets(bf
, sizeof(bf
), fp
) == NULL
)
281 if ((rdclock() - t
) > timeout
) {
282 pr_warning("Reading %s time out. "
283 "You may want to increase "
284 "the time limit by --proc-map-timeout\n",
290 /* ensure null termination since stack will be reused. */
291 strcpy(execname
, "");
293 /* 00400000-0040c000 r-xp 00000000 fd:01 41038 /bin/cat */
294 n
= sscanf(bf
, "%"PRIx64
"-%"PRIx64
" %s %"PRIx64
" %x:%x %u %[^\n]\n",
295 &event
->mmap2
.start
, &event
->mmap2
.len
, prot
,
296 &event
->mmap2
.pgoff
, &event
->mmap2
.maj
,
301 * Anon maps don't have the execname.
306 event
->mmap2
.ino
= (u64
)ino
;
309 * Just like the kernel, see __perf_event_mmap in kernel/perf_event.c
311 if (machine__is_host(machine
))
312 event
->header
.misc
= PERF_RECORD_MISC_USER
;
314 event
->header
.misc
= PERF_RECORD_MISC_GUEST_USER
;
316 /* map protection and flags bits */
317 event
->mmap2
.prot
= 0;
318 event
->mmap2
.flags
= 0;
320 event
->mmap2
.prot
|= PROT_READ
;
322 event
->mmap2
.prot
|= PROT_WRITE
;
324 event
->mmap2
.prot
|= PROT_EXEC
;
327 event
->mmap2
.flags
|= MAP_SHARED
;
329 event
->mmap2
.flags
|= MAP_PRIVATE
;
331 if (prot
[2] != 'x') {
332 if (!mmap_data
|| prot
[0] != 'r')
335 event
->header
.misc
|= PERF_RECORD_MISC_MMAP_DATA
;
340 event
->header
.misc
|= PERF_RECORD_MISC_PROC_MAP_PARSE_TIMEOUT
;
342 if (!strcmp(execname
, ""))
343 strcpy(execname
, anonstr
);
345 size
= strlen(execname
) + 1;
346 memcpy(event
->mmap2
.filename
, execname
, size
);
347 size
= PERF_ALIGN(size
, sizeof(u64
));
348 event
->mmap2
.len
-= event
->mmap
.start
;
349 event
->mmap2
.header
.size
= (sizeof(event
->mmap2
) -
350 (sizeof(event
->mmap2
.filename
) - size
));
351 memset(event
->mmap2
.filename
+ size
, 0, machine
->id_hdr_size
);
352 event
->mmap2
.header
.size
+= machine
->id_hdr_size
;
353 event
->mmap2
.pid
= tgid
;
354 event
->mmap2
.tid
= pid
;
356 if (perf_tool__process_synth_event(tool
, event
, machine
, process
) != 0) {
369 int perf_event__synthesize_modules(struct perf_tool
*tool
,
370 perf_event__handler_t process
,
371 struct machine
*machine
)
375 struct map_groups
*kmaps
= &machine
->kmaps
;
376 struct maps
*maps
= &kmaps
->maps
[MAP__FUNCTION
];
377 union perf_event
*event
= zalloc((sizeof(event
->mmap
) +
378 machine
->id_hdr_size
));
380 pr_debug("Not enough memory synthesizing mmap event "
381 "for kernel modules\n");
385 event
->header
.type
= PERF_RECORD_MMAP
;
388 * kernel uses 0 for user space maps, see kernel/perf_event.c
391 if (machine__is_host(machine
))
392 event
->header
.misc
= PERF_RECORD_MISC_KERNEL
;
394 event
->header
.misc
= PERF_RECORD_MISC_GUEST_KERNEL
;
396 for (pos
= maps__first(maps
); pos
; pos
= map__next(pos
)) {
399 if (__map__is_kernel(pos
))
402 size
= PERF_ALIGN(pos
->dso
->long_name_len
+ 1, sizeof(u64
));
403 event
->mmap
.header
.type
= PERF_RECORD_MMAP
;
404 event
->mmap
.header
.size
= (sizeof(event
->mmap
) -
405 (sizeof(event
->mmap
.filename
) - size
));
406 memset(event
->mmap
.filename
+ size
, 0, machine
->id_hdr_size
);
407 event
->mmap
.header
.size
+= machine
->id_hdr_size
;
408 event
->mmap
.start
= pos
->start
;
409 event
->mmap
.len
= pos
->end
- pos
->start
;
410 event
->mmap
.pid
= machine
->pid
;
412 memcpy(event
->mmap
.filename
, pos
->dso
->long_name
,
413 pos
->dso
->long_name_len
+ 1);
414 if (perf_tool__process_synth_event(tool
, event
, machine
, process
) != 0) {
424 static int __event__synthesize_thread(union perf_event
*comm_event
,
425 union perf_event
*mmap_event
,
426 union perf_event
*fork_event
,
428 perf_event__handler_t process
,
429 struct perf_tool
*tool
,
430 struct machine
*machine
,
432 unsigned int proc_map_timeout
)
434 char filename
[PATH_MAX
];
436 struct dirent dirent
, *next
;
440 /* special case: only send one comm event using passed in pid */
442 tgid
= perf_event__synthesize_comm(tool
, comm_event
, pid
,
448 return perf_event__synthesize_mmap_events(tool
, mmap_event
, pid
, tgid
,
449 process
, machine
, mmap_data
,
453 if (machine__is_default_guest(machine
))
456 snprintf(filename
, sizeof(filename
), "%s/proc/%d/task",
457 machine
->root_dir
, pid
);
459 tasks
= opendir(filename
);
461 pr_debug("couldn't open %s\n", filename
);
465 while (!readdir_r(tasks
, &dirent
, &next
) && next
) {
469 _pid
= strtol(dirent
.d_name
, &end
, 10);
474 if (perf_event__prepare_comm(comm_event
, _pid
, machine
,
478 if (perf_event__synthesize_fork(tool
, fork_event
, _pid
, tgid
,
479 ppid
, process
, machine
) < 0)
482 * Send the prepared comm event
484 if (perf_tool__process_synth_event(tool
, comm_event
, machine
, process
) != 0)
489 /* process the parent's maps too */
490 rc
= perf_event__synthesize_mmap_events(tool
, mmap_event
, pid
, tgid
,
491 process
, machine
, mmap_data
, proc_map_timeout
);
501 int perf_event__synthesize_thread_map(struct perf_tool
*tool
,
502 struct thread_map
*threads
,
503 perf_event__handler_t process
,
504 struct machine
*machine
,
506 unsigned int proc_map_timeout
)
508 union perf_event
*comm_event
, *mmap_event
, *fork_event
;
509 int err
= -1, thread
, j
;
511 comm_event
= malloc(sizeof(comm_event
->comm
) + machine
->id_hdr_size
);
512 if (comm_event
== NULL
)
515 mmap_event
= malloc(sizeof(mmap_event
->mmap2
) + machine
->id_hdr_size
);
516 if (mmap_event
== NULL
)
519 fork_event
= malloc(sizeof(fork_event
->fork
) + machine
->id_hdr_size
);
520 if (fork_event
== NULL
)
524 for (thread
= 0; thread
< threads
->nr
; ++thread
) {
525 if (__event__synthesize_thread(comm_event
, mmap_event
,
527 thread_map__pid(threads
, thread
), 0,
528 process
, tool
, machine
,
529 mmap_data
, proc_map_timeout
)) {
535 * comm.pid is set to thread group id by
536 * perf_event__synthesize_comm
538 if ((int) comm_event
->comm
.pid
!= thread_map__pid(threads
, thread
)) {
539 bool need_leader
= true;
541 /* is thread group leader in thread_map? */
542 for (j
= 0; j
< threads
->nr
; ++j
) {
543 if ((int) comm_event
->comm
.pid
== thread_map__pid(threads
, j
)) {
549 /* if not, generate events for it */
551 __event__synthesize_thread(comm_event
, mmap_event
,
553 comm_event
->comm
.pid
, 0,
554 process
, tool
, machine
,
555 mmap_data
, proc_map_timeout
)) {
570 int perf_event__synthesize_threads(struct perf_tool
*tool
,
571 perf_event__handler_t process
,
572 struct machine
*machine
,
574 unsigned int proc_map_timeout
)
577 char proc_path
[PATH_MAX
];
578 struct dirent dirent
, *next
;
579 union perf_event
*comm_event
, *mmap_event
, *fork_event
;
582 if (machine__is_default_guest(machine
))
585 comm_event
= malloc(sizeof(comm_event
->comm
) + machine
->id_hdr_size
);
586 if (comm_event
== NULL
)
589 mmap_event
= malloc(sizeof(mmap_event
->mmap2
) + machine
->id_hdr_size
);
590 if (mmap_event
== NULL
)
593 fork_event
= malloc(sizeof(fork_event
->fork
) + machine
->id_hdr_size
);
594 if (fork_event
== NULL
)
597 snprintf(proc_path
, sizeof(proc_path
), "%s/proc", machine
->root_dir
);
598 proc
= opendir(proc_path
);
603 while (!readdir_r(proc
, &dirent
, &next
) && next
) {
605 pid_t pid
= strtol(dirent
.d_name
, &end
, 10);
607 if (*end
) /* only interested in proper numerical dirents */
610 * We may race with exiting thread, so don't stop just because
611 * one thread couldn't be synthesized.
613 __event__synthesize_thread(comm_event
, mmap_event
, fork_event
, pid
,
614 1, process
, tool
, machine
, mmap_data
,
630 struct process_symbol_args
{
635 static int find_symbol_cb(void *arg
, const char *name
, char type
,
638 struct process_symbol_args
*args
= arg
;
641 * Must be a function or at least an alias, as in PARISC64, where "_text" is
642 * an 'A' to the same address as "_stext".
644 if (!(symbol_type__is_a(type
, MAP__FUNCTION
) ||
645 type
== 'A') || strcmp(name
, args
->name
))
652 u64
kallsyms__get_function_start(const char *kallsyms_filename
,
653 const char *symbol_name
)
655 struct process_symbol_args args
= { .name
= symbol_name
, };
657 if (kallsyms__parse(kallsyms_filename
, &args
, find_symbol_cb
) <= 0)
663 int perf_event__synthesize_kernel_mmap(struct perf_tool
*tool
,
664 perf_event__handler_t process
,
665 struct machine
*machine
)
668 const char *mmap_name
;
669 char name_buff
[PATH_MAX
];
670 struct map
*map
= machine__kernel_map(machine
);
673 union perf_event
*event
;
679 * We should get this from /sys/kernel/sections/.text, but till that is
680 * available use this, and after it is use this as a fallback for older
683 event
= zalloc((sizeof(event
->mmap
) + machine
->id_hdr_size
));
685 pr_debug("Not enough memory synthesizing mmap event "
686 "for kernel modules\n");
690 mmap_name
= machine__mmap_name(machine
, name_buff
, sizeof(name_buff
));
691 if (machine__is_host(machine
)) {
693 * kernel uses PERF_RECORD_MISC_USER for user space maps,
694 * see kernel/perf_event.c __perf_event_mmap
696 event
->header
.misc
= PERF_RECORD_MISC_KERNEL
;
698 event
->header
.misc
= PERF_RECORD_MISC_GUEST_KERNEL
;
701 kmap
= map__kmap(map
);
702 size
= snprintf(event
->mmap
.filename
, sizeof(event
->mmap
.filename
),
703 "%s%s", mmap_name
, kmap
->ref_reloc_sym
->name
) + 1;
704 size
= PERF_ALIGN(size
, sizeof(u64
));
705 event
->mmap
.header
.type
= PERF_RECORD_MMAP
;
706 event
->mmap
.header
.size
= (sizeof(event
->mmap
) -
707 (sizeof(event
->mmap
.filename
) - size
) + machine
->id_hdr_size
);
708 event
->mmap
.pgoff
= kmap
->ref_reloc_sym
->addr
;
709 event
->mmap
.start
= map
->start
;
710 event
->mmap
.len
= map
->end
- event
->mmap
.start
;
711 event
->mmap
.pid
= machine
->pid
;
713 err
= perf_tool__process_synth_event(tool
, event
, machine
, process
);
719 int perf_event__synthesize_thread_map2(struct perf_tool
*tool
,
720 struct thread_map
*threads
,
721 perf_event__handler_t process
,
722 struct machine
*machine
)
724 union perf_event
*event
;
727 size
= sizeof(event
->thread_map
);
728 size
+= threads
->nr
* sizeof(event
->thread_map
.entries
[0]);
730 event
= zalloc(size
);
734 event
->header
.type
= PERF_RECORD_THREAD_MAP
;
735 event
->header
.size
= size
;
736 event
->thread_map
.nr
= threads
->nr
;
738 for (i
= 0; i
< threads
->nr
; i
++) {
739 struct thread_map_event_entry
*entry
= &event
->thread_map
.entries
[i
];
740 char *comm
= thread_map__comm(threads
, i
);
745 entry
->pid
= thread_map__pid(threads
, i
);
746 strncpy((char *) &entry
->comm
, comm
, sizeof(entry
->comm
));
749 err
= process(tool
, event
, NULL
, machine
);
755 static void synthesize_cpus(struct cpu_map_entries
*cpus
,
762 for (i
= 0; i
< map
->nr
; i
++)
763 cpus
->cpu
[i
] = map
->map
[i
];
766 static void synthesize_mask(struct cpu_map_mask
*mask
,
767 struct cpu_map
*map
, int max
)
771 mask
->nr
= BITS_TO_LONGS(max
);
772 mask
->long_size
= sizeof(long);
774 for (i
= 0; i
< map
->nr
; i
++)
775 set_bit(map
->map
[i
], mask
->mask
);
778 static size_t cpus_size(struct cpu_map
*map
)
780 return sizeof(struct cpu_map_entries
) + map
->nr
* sizeof(u16
);
783 static size_t mask_size(struct cpu_map
*map
, int *max
)
789 for (i
= 0; i
< map
->nr
; i
++) {
790 /* bit possition of the cpu is + 1 */
791 int bit
= map
->map
[i
] + 1;
797 return sizeof(struct cpu_map_mask
) + BITS_TO_LONGS(*max
) * sizeof(long);
800 void *cpu_map_data__alloc(struct cpu_map
*map
, size_t *size
, u16
*type
, int *max
)
802 size_t size_cpus
, size_mask
;
803 bool is_dummy
= cpu_map__empty(map
);
806 * Both array and mask data have variable size based
807 * on the number of cpus and their actual values.
808 * The size of the 'struct cpu_map_data' is:
810 * array = size of 'struct cpu_map_entries' +
811 * number of cpus * sizeof(u64)
813 * mask = size of 'struct cpu_map_mask' +
814 * maximum cpu bit converted to size of longs
816 * and finaly + the size of 'struct cpu_map_data'.
818 size_cpus
= cpus_size(map
);
819 size_mask
= mask_size(map
, max
);
821 if (is_dummy
|| (size_cpus
< size_mask
)) {
823 *type
= PERF_CPU_MAP__CPUS
;
826 *type
= PERF_CPU_MAP__MASK
;
829 *size
+= sizeof(struct cpu_map_data
);
830 return zalloc(*size
);
833 void cpu_map_data__synthesize(struct cpu_map_data
*data
, struct cpu_map
*map
,
839 case PERF_CPU_MAP__CPUS
:
840 synthesize_cpus((struct cpu_map_entries
*) data
->data
, map
);
842 case PERF_CPU_MAP__MASK
:
843 synthesize_mask((struct cpu_map_mask
*) data
->data
, map
, max
);
849 static struct cpu_map_event
* cpu_map_event__new(struct cpu_map
*map
)
851 size_t size
= sizeof(struct cpu_map_event
);
852 struct cpu_map_event
*event
;
856 event
= cpu_map_data__alloc(map
, &size
, &type
, &max
);
860 event
->header
.type
= PERF_RECORD_CPU_MAP
;
861 event
->header
.size
= size
;
862 event
->data
.type
= type
;
864 cpu_map_data__synthesize(&event
->data
, map
, type
, max
);
868 int perf_event__synthesize_cpu_map(struct perf_tool
*tool
,
870 perf_event__handler_t process
,
871 struct machine
*machine
)
873 struct cpu_map_event
*event
;
876 event
= cpu_map_event__new(map
);
880 err
= process(tool
, (union perf_event
*) event
, NULL
, machine
);
886 int perf_event__synthesize_stat_config(struct perf_tool
*tool
,
887 struct perf_stat_config
*config
,
888 perf_event__handler_t process
,
889 struct machine
*machine
)
891 struct stat_config_event
*event
;
892 int size
, i
= 0, err
;
894 size
= sizeof(*event
);
895 size
+= (PERF_STAT_CONFIG_TERM__MAX
* sizeof(event
->data
[0]));
897 event
= zalloc(size
);
901 event
->header
.type
= PERF_RECORD_STAT_CONFIG
;
902 event
->header
.size
= size
;
903 event
->nr
= PERF_STAT_CONFIG_TERM__MAX
;
905 #define ADD(__term, __val) \
906 event->data[i].tag = PERF_STAT_CONFIG_TERM__##__term; \
907 event->data[i].val = __val; \
910 ADD(AGGR_MODE
, config
->aggr_mode
)
911 ADD(INTERVAL
, config
->interval
)
912 ADD(SCALE
, config
->scale
)
914 WARN_ONCE(i
!= PERF_STAT_CONFIG_TERM__MAX
,
915 "stat config terms unbalanced\n");
918 err
= process(tool
, (union perf_event
*) event
, NULL
, machine
);
924 int perf_event__synthesize_stat(struct perf_tool
*tool
,
925 u32 cpu
, u32 thread
, u64 id
,
926 struct perf_counts_values
*count
,
927 perf_event__handler_t process
,
928 struct machine
*machine
)
930 struct stat_event event
;
932 event
.header
.type
= PERF_RECORD_STAT
;
933 event
.header
.size
= sizeof(event
);
934 event
.header
.misc
= 0;
938 event
.thread
= thread
;
939 event
.val
= count
->val
;
940 event
.ena
= count
->ena
;
941 event
.run
= count
->run
;
943 return process(tool
, (union perf_event
*) &event
, NULL
, machine
);
946 int perf_event__synthesize_stat_round(struct perf_tool
*tool
,
947 u64 evtime
, u64 type
,
948 perf_event__handler_t process
,
949 struct machine
*machine
)
951 struct stat_round_event event
;
953 event
.header
.type
= PERF_RECORD_STAT_ROUND
;
954 event
.header
.size
= sizeof(event
);
955 event
.header
.misc
= 0;
960 return process(tool
, (union perf_event
*) &event
, NULL
, machine
);
963 void perf_event__read_stat_config(struct perf_stat_config
*config
,
964 struct stat_config_event
*event
)
968 for (i
= 0; i
< event
->nr
; i
++) {
970 switch (event
->data
[i
].tag
) {
971 #define CASE(__term, __val) \
972 case PERF_STAT_CONFIG_TERM__##__term: \
973 config->__val = event->data[i].val; \
976 CASE(AGGR_MODE
, aggr_mode
)
978 CASE(INTERVAL
, interval
)
981 pr_warning("unknown stat config term %" PRIu64
"\n",
987 size_t perf_event__fprintf_comm(union perf_event
*event
, FILE *fp
)
991 if (event
->header
.misc
& PERF_RECORD_MISC_COMM_EXEC
)
996 return fprintf(fp
, "%s: %s:%d/%d\n", s
, event
->comm
.comm
, event
->comm
.pid
, event
->comm
.tid
);
999 int perf_event__process_comm(struct perf_tool
*tool __maybe_unused
,
1000 union perf_event
*event
,
1001 struct perf_sample
*sample
,
1002 struct machine
*machine
)
1004 return machine__process_comm_event(machine
, event
, sample
);
1007 int perf_event__process_lost(struct perf_tool
*tool __maybe_unused
,
1008 union perf_event
*event
,
1009 struct perf_sample
*sample
,
1010 struct machine
*machine
)
1012 return machine__process_lost_event(machine
, event
, sample
);
1015 int perf_event__process_aux(struct perf_tool
*tool __maybe_unused
,
1016 union perf_event
*event
,
1017 struct perf_sample
*sample __maybe_unused
,
1018 struct machine
*machine
)
1020 return machine__process_aux_event(machine
, event
);
1023 int perf_event__process_itrace_start(struct perf_tool
*tool __maybe_unused
,
1024 union perf_event
*event
,
1025 struct perf_sample
*sample __maybe_unused
,
1026 struct machine
*machine
)
1028 return machine__process_itrace_start_event(machine
, event
);
1031 int perf_event__process_lost_samples(struct perf_tool
*tool __maybe_unused
,
1032 union perf_event
*event
,
1033 struct perf_sample
*sample
,
1034 struct machine
*machine
)
1036 return machine__process_lost_samples_event(machine
, event
, sample
);
1039 int perf_event__process_switch(struct perf_tool
*tool __maybe_unused
,
1040 union perf_event
*event
,
1041 struct perf_sample
*sample __maybe_unused
,
1042 struct machine
*machine
)
1044 return machine__process_switch_event(machine
, event
);
1047 size_t perf_event__fprintf_mmap(union perf_event
*event
, FILE *fp
)
1049 return fprintf(fp
, " %d/%d: [%#" PRIx64
"(%#" PRIx64
") @ %#" PRIx64
"]: %c %s\n",
1050 event
->mmap
.pid
, event
->mmap
.tid
, event
->mmap
.start
,
1051 event
->mmap
.len
, event
->mmap
.pgoff
,
1052 (event
->header
.misc
& PERF_RECORD_MISC_MMAP_DATA
) ? 'r' : 'x',
1053 event
->mmap
.filename
);
1056 size_t perf_event__fprintf_mmap2(union perf_event
*event
, FILE *fp
)
1058 return fprintf(fp
, " %d/%d: [%#" PRIx64
"(%#" PRIx64
") @ %#" PRIx64
1059 " %02x:%02x %"PRIu64
" %"PRIu64
"]: %c%c%c%c %s\n",
1060 event
->mmap2
.pid
, event
->mmap2
.tid
, event
->mmap2
.start
,
1061 event
->mmap2
.len
, event
->mmap2
.pgoff
, event
->mmap2
.maj
,
1062 event
->mmap2
.min
, event
->mmap2
.ino
,
1063 event
->mmap2
.ino_generation
,
1064 (event
->mmap2
.prot
& PROT_READ
) ? 'r' : '-',
1065 (event
->mmap2
.prot
& PROT_WRITE
) ? 'w' : '-',
1066 (event
->mmap2
.prot
& PROT_EXEC
) ? 'x' : '-',
1067 (event
->mmap2
.flags
& MAP_SHARED
) ? 's' : 'p',
1068 event
->mmap2
.filename
);
1071 size_t perf_event__fprintf_thread_map(union perf_event
*event
, FILE *fp
)
1073 struct thread_map
*threads
= thread_map__new_event(&event
->thread_map
);
1076 ret
= fprintf(fp
, " nr: ");
1079 ret
+= thread_map__fprintf(threads
, fp
);
1081 ret
+= fprintf(fp
, "failed to get threads from event\n");
1083 thread_map__put(threads
);
1087 size_t perf_event__fprintf_cpu_map(union perf_event
*event
, FILE *fp
)
1089 struct cpu_map
*cpus
= cpu_map__new_data(&event
->cpu_map
.data
);
1092 ret
= fprintf(fp
, " nr: ");
1095 ret
+= cpu_map__fprintf(cpus
, fp
);
1097 ret
+= fprintf(fp
, "failed to get cpumap from event\n");
1103 int perf_event__process_mmap(struct perf_tool
*tool __maybe_unused
,
1104 union perf_event
*event
,
1105 struct perf_sample
*sample
,
1106 struct machine
*machine
)
1108 return machine__process_mmap_event(machine
, event
, sample
);
1111 int perf_event__process_mmap2(struct perf_tool
*tool __maybe_unused
,
1112 union perf_event
*event
,
1113 struct perf_sample
*sample
,
1114 struct machine
*machine
)
1116 return machine__process_mmap2_event(machine
, event
, sample
);
1119 size_t perf_event__fprintf_task(union perf_event
*event
, FILE *fp
)
1121 return fprintf(fp
, "(%d:%d):(%d:%d)\n",
1122 event
->fork
.pid
, event
->fork
.tid
,
1123 event
->fork
.ppid
, event
->fork
.ptid
);
1126 int perf_event__process_fork(struct perf_tool
*tool __maybe_unused
,
1127 union perf_event
*event
,
1128 struct perf_sample
*sample
,
1129 struct machine
*machine
)
1131 return machine__process_fork_event(machine
, event
, sample
);
1134 int perf_event__process_exit(struct perf_tool
*tool __maybe_unused
,
1135 union perf_event
*event
,
1136 struct perf_sample
*sample
,
1137 struct machine
*machine
)
1139 return machine__process_exit_event(machine
, event
, sample
);
1142 size_t perf_event__fprintf_aux(union perf_event
*event
, FILE *fp
)
1144 return fprintf(fp
, " offset: %#"PRIx64
" size: %#"PRIx64
" flags: %#"PRIx64
" [%s%s]\n",
1145 event
->aux
.aux_offset
, event
->aux
.aux_size
,
1147 event
->aux
.flags
& PERF_AUX_FLAG_TRUNCATED
? "T" : "",
1148 event
->aux
.flags
& PERF_AUX_FLAG_OVERWRITE
? "O" : "");
1151 size_t perf_event__fprintf_itrace_start(union perf_event
*event
, FILE *fp
)
1153 return fprintf(fp
, " pid: %u tid: %u\n",
1154 event
->itrace_start
.pid
, event
->itrace_start
.tid
);
1157 size_t perf_event__fprintf_switch(union perf_event
*event
, FILE *fp
)
1159 bool out
= event
->header
.misc
& PERF_RECORD_MISC_SWITCH_OUT
;
1160 const char *in_out
= out
? "OUT" : "IN ";
1162 if (event
->header
.type
== PERF_RECORD_SWITCH
)
1163 return fprintf(fp
, " %s\n", in_out
);
1165 return fprintf(fp
, " %s %s pid/tid: %5u/%-5u\n",
1166 in_out
, out
? "next" : "prev",
1167 event
->context_switch
.next_prev_pid
,
1168 event
->context_switch
.next_prev_tid
);
1171 size_t perf_event__fprintf(union perf_event
*event
, FILE *fp
)
1173 size_t ret
= fprintf(fp
, "PERF_RECORD_%s",
1174 perf_event__name(event
->header
.type
));
1176 switch (event
->header
.type
) {
1177 case PERF_RECORD_COMM
:
1178 ret
+= perf_event__fprintf_comm(event
, fp
);
1180 case PERF_RECORD_FORK
:
1181 case PERF_RECORD_EXIT
:
1182 ret
+= perf_event__fprintf_task(event
, fp
);
1184 case PERF_RECORD_MMAP
:
1185 ret
+= perf_event__fprintf_mmap(event
, fp
);
1187 case PERF_RECORD_MMAP2
:
1188 ret
+= perf_event__fprintf_mmap2(event
, fp
);
1190 case PERF_RECORD_AUX
:
1191 ret
+= perf_event__fprintf_aux(event
, fp
);
1193 case PERF_RECORD_ITRACE_START
:
1194 ret
+= perf_event__fprintf_itrace_start(event
, fp
);
1196 case PERF_RECORD_SWITCH
:
1197 case PERF_RECORD_SWITCH_CPU_WIDE
:
1198 ret
+= perf_event__fprintf_switch(event
, fp
);
1201 ret
+= fprintf(fp
, "\n");
1207 int perf_event__process(struct perf_tool
*tool __maybe_unused
,
1208 union perf_event
*event
,
1209 struct perf_sample
*sample
,
1210 struct machine
*machine
)
1212 return machine__process_event(machine
, event
, sample
);
1215 void thread__find_addr_map(struct thread
*thread
, u8 cpumode
,
1216 enum map_type type
, u64 addr
,
1217 struct addr_location
*al
)
1219 struct map_groups
*mg
= thread
->mg
;
1220 struct machine
*machine
= mg
->machine
;
1221 bool load_map
= false;
1223 al
->machine
= machine
;
1224 al
->thread
= thread
;
1226 al
->cpumode
= cpumode
;
1229 if (machine
== NULL
) {
1234 if (cpumode
== PERF_RECORD_MISC_KERNEL
&& perf_host
) {
1236 mg
= &machine
->kmaps
;
1238 } else if (cpumode
== PERF_RECORD_MISC_USER
&& perf_host
) {
1240 } else if (cpumode
== PERF_RECORD_MISC_GUEST_KERNEL
&& perf_guest
) {
1242 mg
= &machine
->kmaps
;
1244 } else if (cpumode
== PERF_RECORD_MISC_GUEST_USER
&& perf_guest
) {
1250 if ((cpumode
== PERF_RECORD_MISC_GUEST_USER
||
1251 cpumode
== PERF_RECORD_MISC_GUEST_KERNEL
) &&
1253 al
->filtered
|= (1 << HIST_FILTER__GUEST
);
1254 if ((cpumode
== PERF_RECORD_MISC_USER
||
1255 cpumode
== PERF_RECORD_MISC_KERNEL
) &&
1257 al
->filtered
|= (1 << HIST_FILTER__HOST
);
1262 al
->map
= map_groups__find(mg
, type
, al
->addr
);
1263 if (al
->map
== NULL
) {
1265 * If this is outside of all known maps, and is a negative
1266 * address, try to look it up in the kernel dso, as it might be
1267 * a vsyscall or vdso (which executes in user-mode).
1269 * XXX This is nasty, we should have a symbol list in the
1270 * "[vdso]" dso, but for now lets use the old trick of looking
1271 * in the whole kernel symbol list.
1273 if (cpumode
== PERF_RECORD_MISC_USER
&& machine
&&
1274 mg
!= &machine
->kmaps
&&
1275 machine__kernel_ip(machine
, al
->addr
)) {
1276 mg
= &machine
->kmaps
;
1282 * Kernel maps might be changed when loading symbols so loading
1283 * must be done prior to using kernel maps.
1286 map__load(al
->map
, machine
->symbol_filter
);
1287 al
->addr
= al
->map
->map_ip(al
->map
, al
->addr
);
1291 void thread__find_addr_location(struct thread
*thread
,
1292 u8 cpumode
, enum map_type type
, u64 addr
,
1293 struct addr_location
*al
)
1295 thread__find_addr_map(thread
, cpumode
, type
, addr
, al
);
1296 if (al
->map
!= NULL
)
1297 al
->sym
= map__find_symbol(al
->map
, al
->addr
,
1298 thread
->mg
->machine
->symbol_filter
);
1304 * Callers need to drop the reference to al->thread, obtained in
1305 * machine__findnew_thread()
1307 int machine__resolve(struct machine
*machine
, struct addr_location
*al
,
1308 struct perf_sample
*sample
)
1310 struct thread
*thread
= machine__findnew_thread(machine
, sample
->pid
,
1316 dump_printf(" ... thread: %s:%d\n", thread__comm_str(thread
), thread
->tid
);
1318 * Have we already created the kernel maps for this machine?
1320 * This should have happened earlier, when we processed the kernel MMAP
1321 * events, but for older perf.data files there was no such thing, so do
1324 if (sample
->cpumode
== PERF_RECORD_MISC_KERNEL
&&
1325 machine__kernel_map(machine
) == NULL
)
1326 machine__create_kernel_maps(machine
);
1328 thread__find_addr_map(thread
, sample
->cpumode
, MAP__FUNCTION
, sample
->ip
, al
);
1329 dump_printf(" ...... dso: %s\n",
1330 al
->map
? al
->map
->dso
->long_name
:
1331 al
->level
== 'H' ? "[hypervisor]" : "<not found>");
1333 if (thread__is_filtered(thread
))
1334 al
->filtered
|= (1 << HIST_FILTER__THREAD
);
1337 al
->cpu
= sample
->cpu
;
1341 struct perf_env
*env
= machine
->env
;
1343 if (env
&& env
->cpu
)
1344 al
->socket
= env
->cpu
[al
->cpu
].socket_id
;
1348 struct dso
*dso
= al
->map
->dso
;
1350 if (symbol_conf
.dso_list
&&
1351 (!dso
|| !(strlist__has_entry(symbol_conf
.dso_list
,
1353 (dso
->short_name
!= dso
->long_name
&&
1354 strlist__has_entry(symbol_conf
.dso_list
,
1355 dso
->long_name
))))) {
1356 al
->filtered
|= (1 << HIST_FILTER__DSO
);
1359 al
->sym
= map__find_symbol(al
->map
, al
->addr
,
1360 machine
->symbol_filter
);
1363 if (symbol_conf
.sym_list
&&
1364 (!al
->sym
|| !strlist__has_entry(symbol_conf
.sym_list
,
1366 al
->filtered
|= (1 << HIST_FILTER__SYMBOL
);
1373 * The preprocess_sample method will return with reference counts for the
1374 * in it, when done using (and perhaps getting ref counts if needing to
1375 * keep a pointer to one of those entries) it must be paired with
1376 * addr_location__put(), so that the refcounts can be decremented.
1378 void addr_location__put(struct addr_location
*al
)
1380 thread__zput(al
->thread
);
1383 bool is_bts_event(struct perf_event_attr
*attr
)
1385 return attr
->type
== PERF_TYPE_HARDWARE
&&
1386 (attr
->config
& PERF_COUNT_HW_BRANCH_INSTRUCTIONS
) &&
1387 attr
->sample_period
== 1;
1390 bool sample_addr_correlates_sym(struct perf_event_attr
*attr
)
1392 if (attr
->type
== PERF_TYPE_SOFTWARE
&&
1393 (attr
->config
== PERF_COUNT_SW_PAGE_FAULTS
||
1394 attr
->config
== PERF_COUNT_SW_PAGE_FAULTS_MIN
||
1395 attr
->config
== PERF_COUNT_SW_PAGE_FAULTS_MAJ
))
1398 if (is_bts_event(attr
))
1404 void thread__resolve(struct thread
*thread
, struct addr_location
*al
,
1405 struct perf_sample
*sample
)
1407 thread__find_addr_map(thread
, sample
->cpumode
, MAP__FUNCTION
, sample
->addr
, al
);
1409 thread__find_addr_map(thread
, sample
->cpumode
, MAP__VARIABLE
,
1412 al
->cpu
= sample
->cpu
;
1416 al
->sym
= map__find_symbol(al
->map
, al
->addr
, NULL
);