4 * Builtin 'trace' command:
6 * Display a continuously updated trace of any workload, CPU, specific PID,
7 * system wide, etc. Default format is loosely strace like, but any other
8 * event may be specified using --event.
10 * Copyright (C) 2012, 2013, 2014, 2015 Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
12 * Initially based on the 'trace' prototype by Thomas Gleixner:
14 * http://lwn.net/Articles/415728/ ("Announcing a new utility: 'trace'")
16 * Released under the GPL v2. (and only v2, not any later version)
19 #include <traceevent/event-parse.h>
20 #include <api/fs/tracing_path.h>
22 #include "util/color.h"
23 #include "util/debug.h"
24 #include "util/event.h"
25 #include "util/evlist.h"
26 #include <subcmd/exec-cmd.h>
27 #include "util/machine.h"
28 #include "util/path.h"
29 #include "util/session.h"
30 #include "util/thread.h"
31 #include <subcmd/parse-options.h>
32 #include "util/strlist.h"
33 #include "util/intlist.h"
34 #include "util/thread_map.h"
35 #include "util/stat.h"
36 #include "trace/beauty/beauty.h"
37 #include "trace-event.h"
38 #include "util/parse-events.h"
39 #include "util/bpf-loader.h"
40 #include "callchain.h"
41 #include "print_binary.h"
43 #include "syscalltbl.h"
44 #include "rb_resort.h"
48 #include <libaudit.h> /* FIXME: Still needed for audit_errno_to_name */
53 #include <linux/err.h>
54 #include <linux/filter.h>
55 #include <linux/audit.h>
56 #include <linux/kernel.h>
57 #include <linux/random.h>
58 #include <linux/stringify.h>
59 #include <linux/time64.h>
61 #include "sane_ctype.h"
64 # define O_CLOEXEC 02000000
68 struct perf_tool tool;
69 struct syscalltbl *sctbl;
72 struct syscall *table;
74 struct perf_evsel *sys_enter,
78 struct record_opts opts;
79 struct perf_evlist *evlist;
81 struct thread *current;
84 unsigned long nr_events;
85 struct strlist *ev_qualifier;
94 double duration_filter;
100 unsigned int max_stack;
101 unsigned int min_stack;
102 bool not_ev_qualifier;
106 bool multiple_threads;
110 bool show_tool_stats;
112 bool kernel_syscallchains;
122 u64 (*integer)(struct tp_field *field, struct perf_sample *sample);
123 void *(*pointer)(struct tp_field *field, struct perf_sample *sample);
127 #define TP_UINT_FIELD(bits) \
128 static u64 tp_field__u##bits(struct tp_field *field, struct perf_sample *sample) \
131 memcpy(&value, sample->raw_data + field->offset, sizeof(value)); \
140 #define TP_UINT_FIELD__SWAPPED(bits) \
141 static u64 tp_field__swapped_u##bits(struct tp_field *field, struct perf_sample *sample) \
144 memcpy(&value, sample->raw_data + field->offset, sizeof(value)); \
145 return bswap_##bits(value);\
148 TP_UINT_FIELD__SWAPPED(16);
149 TP_UINT_FIELD__SWAPPED(32);
150 TP_UINT_FIELD__SWAPPED(64);
152 static int tp_field__init_uint(struct tp_field *field,
153 struct format_field *format_field,
156 field->offset = format_field->offset;
158 switch (format_field->size) {
160 field->integer = tp_field__u8;
163 field->integer = needs_swap ? tp_field__swapped_u16 : tp_field__u16;
166 field->integer = needs_swap ? tp_field__swapped_u32 : tp_field__u32;
169 field->integer = needs_swap ? tp_field__swapped_u64 : tp_field__u64;
178 static void *tp_field__ptr(struct tp_field *field, struct perf_sample *sample)
180 return sample->raw_data + field->offset;
183 static int tp_field__init_ptr(struct tp_field *field, struct format_field *format_field)
185 field->offset = format_field->offset;
186 field->pointer = tp_field__ptr;
193 struct tp_field args, ret;
197 static int perf_evsel__init_tp_uint_field(struct perf_evsel *evsel,
198 struct tp_field *field,
201 struct format_field *format_field = perf_evsel__field(evsel, name);
203 if (format_field == NULL)
206 return tp_field__init_uint(field, format_field, evsel->needs_swap);
209 #define perf_evsel__init_sc_tp_uint_field(evsel, name) \
210 ({ struct syscall_tp *sc = evsel->priv;\
211 perf_evsel__init_tp_uint_field(evsel, &sc->name, #name); })
213 static int perf_evsel__init_tp_ptr_field(struct perf_evsel *evsel,
214 struct tp_field *field,
217 struct format_field *format_field = perf_evsel__field(evsel, name);
219 if (format_field == NULL)
222 return tp_field__init_ptr(field, format_field);
225 #define perf_evsel__init_sc_tp_ptr_field(evsel, name) \
226 ({ struct syscall_tp *sc = evsel->priv;\
227 perf_evsel__init_tp_ptr_field(evsel, &sc->name, #name); })
229 static void perf_evsel__delete_priv(struct perf_evsel *evsel)
232 perf_evsel__delete(evsel);
235 static int perf_evsel__init_syscall_tp(struct perf_evsel *evsel, void *handler)
237 evsel->priv = malloc(sizeof(struct syscall_tp));
238 if (evsel->priv != NULL) {
239 if (perf_evsel__init_sc_tp_uint_field(evsel, id))
242 evsel->handler = handler;
253 static struct perf_evsel *perf_evsel__syscall_newtp(const char *direction, void *handler)
255 struct perf_evsel *evsel = perf_evsel__newtp("raw_syscalls", direction);
257 /* older kernel (e.g., RHEL6) use syscalls:{enter,exit} */
259 evsel = perf_evsel__newtp("syscalls", direction);
264 if (perf_evsel__init_syscall_tp(evsel, handler))
270 perf_evsel__delete_priv(evsel);
274 #define perf_evsel__sc_tp_uint(evsel, name, sample) \
275 ({ struct syscall_tp *fields = evsel->priv; \
276 fields->name.integer(&fields->name, sample); })
278 #define perf_evsel__sc_tp_ptr(evsel, name, sample) \
279 ({ struct syscall_tp *fields = evsel->priv; \
280 fields->name.pointer(&fields->name, sample); })
285 const char **entries;
288 #define DEFINE_STRARRAY(array) struct strarray strarray__##array = { \
289 .nr_entries = ARRAY_SIZE(array), \
293 #define DEFINE_STRARRAY_OFFSET(array, off) struct strarray strarray__##array = { \
295 .nr_entries = ARRAY_SIZE(array), \
299 static size_t __syscall_arg__scnprintf_strarray(char *bf, size_t size,
301 struct syscall_arg *arg)
303 struct strarray *sa = arg->parm;
304 int idx = arg->val - sa->offset;
306 if (idx < 0 || idx >= sa->nr_entries)
307 return scnprintf(bf, size, intfmt, arg->val);
309 return scnprintf(bf, size, "%s", sa->entries[idx]);
312 static size_t syscall_arg__scnprintf_strarray(char *bf, size_t size,
313 struct syscall_arg *arg)
315 return __syscall_arg__scnprintf_strarray(bf, size, "%d", arg);
318 #define SCA_STRARRAY syscall_arg__scnprintf_strarray
320 #if defined(__i386__) || defined(__x86_64__)
322 * FIXME: Make this available to all arches as soon as the ioctl beautifier
323 * gets rewritten to support all arches.
325 static size_t syscall_arg__scnprintf_strhexarray(char *bf, size_t size,
326 struct syscall_arg *arg)
328 return __syscall_arg__scnprintf_strarray(bf, size, "%#x", arg);
331 #define SCA_STRHEXARRAY syscall_arg__scnprintf_strhexarray
332 #endif /* defined(__i386__) || defined(__x86_64__) */
334 static size_t syscall_arg__scnprintf_fd(char *bf, size_t size,
335 struct syscall_arg *arg);
337 #define SCA_FD syscall_arg__scnprintf_fd
340 #define AT_FDCWD -100
343 static size_t syscall_arg__scnprintf_fd_at(char *bf, size_t size,
344 struct syscall_arg *arg)
349 return scnprintf(bf, size, "CWD");
351 return syscall_arg__scnprintf_fd(bf, size, arg);
354 #define SCA_FDAT syscall_arg__scnprintf_fd_at
356 static size_t syscall_arg__scnprintf_close_fd(char *bf, size_t size,
357 struct syscall_arg *arg);
359 #define SCA_CLOSE_FD syscall_arg__scnprintf_close_fd
361 static size_t syscall_arg__scnprintf_hex(char *bf, size_t size,
362 struct syscall_arg *arg)
364 return scnprintf(bf, size, "%#lx", arg->val);
367 #define SCA_HEX syscall_arg__scnprintf_hex
369 static size_t syscall_arg__scnprintf_int(char *bf, size_t size,
370 struct syscall_arg *arg)
372 return scnprintf(bf, size, "%d", arg->val);
375 #define SCA_INT syscall_arg__scnprintf_int
377 static const char *bpf_cmd[] = {
378 "MAP_CREATE", "MAP_LOOKUP_ELEM", "MAP_UPDATE_ELEM", "MAP_DELETE_ELEM",
379 "MAP_GET_NEXT_KEY", "PROG_LOAD",
381 static DEFINE_STRARRAY(bpf_cmd);
383 static const char *epoll_ctl_ops[] = { "ADD", "DEL", "MOD", };
384 static DEFINE_STRARRAY_OFFSET(epoll_ctl_ops, 1);
386 static const char *itimers[] = { "REAL", "VIRTUAL", "PROF", };
387 static DEFINE_STRARRAY(itimers);
389 static const char *keyctl_options[] = {
390 "GET_KEYRING_ID", "JOIN_SESSION_KEYRING", "UPDATE", "REVOKE", "CHOWN",
391 "SETPERM", "DESCRIBE", "CLEAR", "LINK", "UNLINK", "SEARCH", "READ",
392 "INSTANTIATE", "NEGATE", "SET_REQKEY_KEYRING", "SET_TIMEOUT",
393 "ASSUME_AUTHORITY", "GET_SECURITY", "SESSION_TO_PARENT", "REJECT",
394 "INSTANTIATE_IOV", "INVALIDATE", "GET_PERSISTENT",
396 static DEFINE_STRARRAY(keyctl_options);
398 static const char *whences[] = { "SET", "CUR", "END",
406 static DEFINE_STRARRAY(whences);
408 static const char *fcntl_cmds[] = {
409 "DUPFD", "GETFD", "SETFD", "GETFL", "SETFL", "GETLK", "SETLK",
410 "SETLKW", "SETOWN", "GETOWN", "SETSIG", "GETSIG", "F_GETLK64",
411 "F_SETLK64", "F_SETLKW64", "F_SETOWN_EX", "F_GETOWN_EX",
414 static DEFINE_STRARRAY(fcntl_cmds);
416 static const char *rlimit_resources[] = {
417 "CPU", "FSIZE", "DATA", "STACK", "CORE", "RSS", "NPROC", "NOFILE",
418 "MEMLOCK", "AS", "LOCKS", "SIGPENDING", "MSGQUEUE", "NICE", "RTPRIO",
421 static DEFINE_STRARRAY(rlimit_resources);
423 static const char *sighow[] = { "BLOCK", "UNBLOCK", "SETMASK", };
424 static DEFINE_STRARRAY(sighow);
426 static const char *clockid[] = {
427 "REALTIME", "MONOTONIC", "PROCESS_CPUTIME_ID", "THREAD_CPUTIME_ID",
428 "MONOTONIC_RAW", "REALTIME_COARSE", "MONOTONIC_COARSE", "BOOTTIME",
429 "REALTIME_ALARM", "BOOTTIME_ALARM", "SGI_CYCLE", "TAI"
431 static DEFINE_STRARRAY(clockid);
433 static const char *socket_families[] = {
434 "UNSPEC", "LOCAL", "INET", "AX25", "IPX", "APPLETALK", "NETROM",
435 "BRIDGE", "ATMPVC", "X25", "INET6", "ROSE", "DECnet", "NETBEUI",
436 "SECURITY", "KEY", "NETLINK", "PACKET", "ASH", "ECONET", "ATMSVC",
437 "RDS", "SNA", "IRDA", "PPPOX", "WANPIPE", "LLC", "IB", "CAN", "TIPC",
438 "BLUETOOTH", "IUCV", "RXRPC", "ISDN", "PHONET", "IEEE802154", "CAIF",
439 "ALG", "NFC", "VSOCK",
441 static DEFINE_STRARRAY(socket_families);
443 static size_t syscall_arg__scnprintf_access_mode(char *bf, size_t size,
444 struct syscall_arg *arg)
449 if (mode == F_OK) /* 0 */
450 return scnprintf(bf, size, "F");
452 if (mode & n##_OK) { \
453 printed += scnprintf(bf + printed, size - printed, "%s", #n); \
463 printed += scnprintf(bf + printed, size - printed, "|%#x", mode);
468 #define SCA_ACCMODE syscall_arg__scnprintf_access_mode
470 static size_t syscall_arg__scnprintf_filename(char *bf, size_t size,
471 struct syscall_arg *arg);
473 #define SCA_FILENAME syscall_arg__scnprintf_filename
475 static size_t syscall_arg__scnprintf_pipe_flags(char *bf, size_t size,
476 struct syscall_arg *arg)
478 int printed = 0, flags = arg->val;
481 if (flags & O_##n) { \
482 printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \
491 printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags);
496 #define SCA_PIPE_FLAGS syscall_arg__scnprintf_pipe_flags
498 #if defined(__i386__) || defined(__x86_64__)
500 * FIXME: Make this available to all arches.
502 #define TCGETS 0x5401
504 static const char *tioctls[] = {
505 "TCGETS", "TCSETS", "TCSETSW", "TCSETSF", "TCGETA", "TCSETA", "TCSETAW",
506 "TCSETAF", "TCSBRK", "TCXONC", "TCFLSH", "TIOCEXCL", "TIOCNXCL",
507 "TIOCSCTTY", "TIOCGPGRP", "TIOCSPGRP", "TIOCOUTQ", "TIOCSTI",
508 "TIOCGWINSZ", "TIOCSWINSZ", "TIOCMGET", "TIOCMBIS", "TIOCMBIC",
509 "TIOCMSET", "TIOCGSOFTCAR", "TIOCSSOFTCAR", "FIONREAD", "TIOCLINUX",
510 "TIOCCONS", "TIOCGSERIAL", "TIOCSSERIAL", "TIOCPKT", "FIONBIO",
511 "TIOCNOTTY", "TIOCSETD", "TIOCGETD", "TCSBRKP", [0x27] = "TIOCSBRK",
512 "TIOCCBRK", "TIOCGSID", "TCGETS2", "TCSETS2", "TCSETSW2", "TCSETSF2",
513 "TIOCGRS485", "TIOCSRS485", "TIOCGPTN", "TIOCSPTLCK",
514 "TIOCGDEV||TCGETX", "TCSETX", "TCSETXF", "TCSETXW", "TIOCSIG",
515 "TIOCVHANGUP", "TIOCGPKT", "TIOCGPTLCK", "TIOCGEXCL",
516 [0x50] = "FIONCLEX", "FIOCLEX", "FIOASYNC", "TIOCSERCONFIG",
517 "TIOCSERGWILD", "TIOCSERSWILD", "TIOCGLCKTRMIOS", "TIOCSLCKTRMIOS",
518 "TIOCSERGSTRUCT", "TIOCSERGETLSR", "TIOCSERGETMULTI", "TIOCSERSETMULTI",
519 "TIOCMIWAIT", "TIOCGICOUNT", [0x60] = "FIOQSIZE",
522 static DEFINE_STRARRAY_OFFSET(tioctls, 0x5401);
523 #endif /* defined(__i386__) || defined(__x86_64__) */
525 #ifndef GRND_NONBLOCK
526 #define GRND_NONBLOCK 0x0001
529 #define GRND_RANDOM 0x0002
532 static size_t syscall_arg__scnprintf_getrandom_flags(char *bf, size_t size,
533 struct syscall_arg *arg)
535 int printed = 0, flags = arg->val;
538 if (flags & GRND_##n) { \
539 printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \
540 flags &= ~GRND_##n; \
548 printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags);
553 #define SCA_GETRANDOM_FLAGS syscall_arg__scnprintf_getrandom_flags
555 #define STRARRAY(arg, name, array) \
556 .arg_scnprintf = { [arg] = SCA_STRARRAY, }, \
557 .arg_parm = { [arg] = &strarray__##array, }
559 #include "trace/beauty/eventfd.c"
560 #include "trace/beauty/flock.c"
561 #include "trace/beauty/futex_op.c"
562 #include "trace/beauty/mmap.c"
563 #include "trace/beauty/mode_t.c"
564 #include "trace/beauty/msg_flags.c"
565 #include "trace/beauty/open_flags.c"
566 #include "trace/beauty/perf_event_open.c"
567 #include "trace/beauty/pid.c"
568 #include "trace/beauty/sched_policy.c"
569 #include "trace/beauty/seccomp.c"
570 #include "trace/beauty/signum.c"
571 #include "trace/beauty/socket_type.c"
572 #include "trace/beauty/waitid_options.c"
574 static struct syscall_fmt {
577 size_t (*arg_scnprintf[6])(char *bf, size_t size, struct syscall_arg *arg);
584 { .name = "access", .errmsg = true,
585 .arg_scnprintf = { [1] = SCA_ACCMODE, /* mode */ }, },
586 { .name = "arch_prctl", .errmsg = true, .alias = "prctl", },
587 { .name = "bpf", .errmsg = true, STRARRAY(0, cmd, bpf_cmd), },
588 { .name = "brk", .hexret = true,
589 .arg_scnprintf = { [0] = SCA_HEX, /* brk */ }, },
590 { .name = "chdir", .errmsg = true, },
591 { .name = "chmod", .errmsg = true, },
592 { .name = "chroot", .errmsg = true, },
593 { .name = "clock_gettime", .errmsg = true, STRARRAY(0, clk_id, clockid), },
594 { .name = "clone", .errpid = true, },
595 { .name = "close", .errmsg = true,
596 .arg_scnprintf = { [0] = SCA_CLOSE_FD, /* fd */ }, },
597 { .name = "connect", .errmsg = true, },
598 { .name = "creat", .errmsg = true, },
599 { .name = "dup", .errmsg = true, },
600 { .name = "dup2", .errmsg = true, },
601 { .name = "dup3", .errmsg = true, },
602 { .name = "epoll_ctl", .errmsg = true, STRARRAY(1, op, epoll_ctl_ops), },
603 { .name = "eventfd2", .errmsg = true,
604 .arg_scnprintf = { [1] = SCA_EFD_FLAGS, /* flags */ }, },
605 { .name = "faccessat", .errmsg = true, },
606 { .name = "fadvise64", .errmsg = true, },
607 { .name = "fallocate", .errmsg = true, },
608 { .name = "fchdir", .errmsg = true, },
609 { .name = "fchmod", .errmsg = true, },
610 { .name = "fchmodat", .errmsg = true,
611 .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ }, },
612 { .name = "fchown", .errmsg = true, },
613 { .name = "fchownat", .errmsg = true,
614 .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ }, },
615 { .name = "fcntl", .errmsg = true,
616 .arg_scnprintf = { [1] = SCA_STRARRAY, /* cmd */ },
617 .arg_parm = { [1] = &strarray__fcntl_cmds, /* cmd */ }, },
618 { .name = "fdatasync", .errmsg = true, },
619 { .name = "flock", .errmsg = true,
620 .arg_scnprintf = { [1] = SCA_FLOCK, /* cmd */ }, },
621 { .name = "fsetxattr", .errmsg = true, },
622 { .name = "fstat", .errmsg = true, .alias = "newfstat", },
623 { .name = "fstatat", .errmsg = true, .alias = "newfstatat", },
624 { .name = "fstatfs", .errmsg = true, },
625 { .name = "fsync", .errmsg = true, },
626 { .name = "ftruncate", .errmsg = true, },
627 { .name = "futex", .errmsg = true,
628 .arg_scnprintf = { [1] = SCA_FUTEX_OP, /* op */ }, },
629 { .name = "futimesat", .errmsg = true,
630 .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ }, },
631 { .name = "getdents", .errmsg = true, },
632 { .name = "getdents64", .errmsg = true, },
633 { .name = "getitimer", .errmsg = true, STRARRAY(0, which, itimers), },
634 { .name = "getpid", .errpid = true, },
635 { .name = "getpgid", .errpid = true, },
636 { .name = "getppid", .errpid = true, },
637 { .name = "getrandom", .errmsg = true,
638 .arg_scnprintf = { [2] = SCA_GETRANDOM_FLAGS, /* flags */ }, },
639 { .name = "getrlimit", .errmsg = true, STRARRAY(0, resource, rlimit_resources), },
640 { .name = "getxattr", .errmsg = true, },
641 { .name = "inotify_add_watch", .errmsg = true, },
642 { .name = "ioctl", .errmsg = true,
644 #if defined(__i386__) || defined(__x86_64__)
646 * FIXME: Make this available to all arches.
648 [1] = SCA_STRHEXARRAY, /* cmd */
649 [2] = SCA_HEX, /* arg */ },
650 .arg_parm = { [1] = &strarray__tioctls, /* cmd */ }, },
652 [2] = SCA_HEX, /* arg */ }, },
654 { .name = "keyctl", .errmsg = true, STRARRAY(0, option, keyctl_options), },
655 { .name = "kill", .errmsg = true,
656 .arg_scnprintf = { [1] = SCA_SIGNUM, /* sig */ }, },
657 { .name = "lchown", .errmsg = true, },
658 { .name = "lgetxattr", .errmsg = true, },
659 { .name = "linkat", .errmsg = true,
660 .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ }, },
661 { .name = "listxattr", .errmsg = true, },
662 { .name = "llistxattr", .errmsg = true, },
663 { .name = "lremovexattr", .errmsg = true, },
664 { .name = "lseek", .errmsg = true,
665 .arg_scnprintf = { [2] = SCA_STRARRAY, /* whence */ },
666 .arg_parm = { [2] = &strarray__whences, /* whence */ }, },
667 { .name = "lsetxattr", .errmsg = true, },
668 { .name = "lstat", .errmsg = true, .alias = "newlstat", },
669 { .name = "lsxattr", .errmsg = true, },
670 { .name = "madvise", .errmsg = true,
671 .arg_scnprintf = { [0] = SCA_HEX, /* start */
672 [2] = SCA_MADV_BHV, /* behavior */ }, },
673 { .name = "mkdir", .errmsg = true, },
674 { .name = "mkdirat", .errmsg = true,
675 .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ }, },
676 { .name = "mknod", .errmsg = true, },
677 { .name = "mknodat", .errmsg = true,
678 .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ }, },
679 { .name = "mlock", .errmsg = true,
680 .arg_scnprintf = { [0] = SCA_HEX, /* addr */ }, },
681 { .name = "mlockall", .errmsg = true,
682 .arg_scnprintf = { [0] = SCA_HEX, /* addr */ }, },
683 { .name = "mmap", .hexret = true,
684 /* The standard mmap maps to old_mmap on s390x */
685 #if defined(__s390x__)
688 .arg_scnprintf = { [0] = SCA_HEX, /* addr */
689 [2] = SCA_MMAP_PROT, /* prot */
690 [3] = SCA_MMAP_FLAGS, /* flags */ }, },
691 { .name = "mprotect", .errmsg = true,
692 .arg_scnprintf = { [0] = SCA_HEX, /* start */
693 [2] = SCA_MMAP_PROT, /* prot */ }, },
694 { .name = "mq_unlink", .errmsg = true,
695 .arg_scnprintf = { [0] = SCA_FILENAME, /* u_name */ }, },
696 { .name = "mremap", .hexret = true,
697 .arg_scnprintf = { [0] = SCA_HEX, /* addr */
698 [3] = SCA_MREMAP_FLAGS, /* flags */
699 [4] = SCA_HEX, /* new_addr */ }, },
700 { .name = "munlock", .errmsg = true,
701 .arg_scnprintf = { [0] = SCA_HEX, /* addr */ }, },
702 { .name = "munmap", .errmsg = true,
703 .arg_scnprintf = { [0] = SCA_HEX, /* addr */ }, },
704 { .name = "name_to_handle_at", .errmsg = true,
705 .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ }, },
706 { .name = "newfstatat", .errmsg = true,
707 .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ }, },
708 { .name = "open", .errmsg = true,
709 .arg_scnprintf = { [1] = SCA_OPEN_FLAGS, /* flags */ }, },
710 { .name = "open_by_handle_at", .errmsg = true,
711 .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */
712 [2] = SCA_OPEN_FLAGS, /* flags */ }, },
713 { .name = "openat", .errmsg = true,
714 .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */
715 [2] = SCA_OPEN_FLAGS, /* flags */ }, },
716 { .name = "perf_event_open", .errmsg = true,
717 .arg_scnprintf = { [2] = SCA_INT, /* cpu */
718 [3] = SCA_FD, /* group_fd */
719 [4] = SCA_PERF_FLAGS, /* flags */ }, },
720 { .name = "pipe2", .errmsg = true,
721 .arg_scnprintf = { [1] = SCA_PIPE_FLAGS, /* flags */ }, },
722 { .name = "poll", .errmsg = true, .timeout = true, },
723 { .name = "ppoll", .errmsg = true, .timeout = true, },
724 { .name = "pread", .errmsg = true, .alias = "pread64", },
725 { .name = "preadv", .errmsg = true, .alias = "pread", },
726 { .name = "prlimit64", .errmsg = true, STRARRAY(1, resource, rlimit_resources), },
727 { .name = "pwrite", .errmsg = true, .alias = "pwrite64", },
728 { .name = "pwritev", .errmsg = true, },
729 { .name = "read", .errmsg = true, },
730 { .name = "readlink", .errmsg = true, },
731 { .name = "readlinkat", .errmsg = true,
732 .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ }, },
733 { .name = "readv", .errmsg = true, },
734 { .name = "recvfrom", .errmsg = true,
735 .arg_scnprintf = { [3] = SCA_MSG_FLAGS, /* flags */ }, },
736 { .name = "recvmmsg", .errmsg = true,
737 .arg_scnprintf = { [3] = SCA_MSG_FLAGS, /* flags */ }, },
738 { .name = "recvmsg", .errmsg = true,
739 .arg_scnprintf = { [2] = SCA_MSG_FLAGS, /* flags */ }, },
740 { .name = "removexattr", .errmsg = true, },
741 { .name = "renameat", .errmsg = true,
742 .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ }, },
743 { .name = "rmdir", .errmsg = true, },
744 { .name = "rt_sigaction", .errmsg = true,
745 .arg_scnprintf = { [0] = SCA_SIGNUM, /* sig */ }, },
746 { .name = "rt_sigprocmask", .errmsg = true, STRARRAY(0, how, sighow), },
747 { .name = "rt_sigqueueinfo", .errmsg = true,
748 .arg_scnprintf = { [1] = SCA_SIGNUM, /* sig */ }, },
749 { .name = "rt_tgsigqueueinfo", .errmsg = true,
750 .arg_scnprintf = { [2] = SCA_SIGNUM, /* sig */ }, },
751 { .name = "sched_getattr", .errmsg = true, },
752 { .name = "sched_setattr", .errmsg = true, },
753 { .name = "sched_setscheduler", .errmsg = true,
754 .arg_scnprintf = { [1] = SCA_SCHED_POLICY, /* policy */ }, },
755 { .name = "seccomp", .errmsg = true,
756 .arg_scnprintf = { [0] = SCA_SECCOMP_OP, /* op */
757 [1] = SCA_SECCOMP_FLAGS, /* flags */ }, },
758 { .name = "select", .errmsg = true, .timeout = true, },
759 { .name = "sendmmsg", .errmsg = true,
760 .arg_scnprintf = { [3] = SCA_MSG_FLAGS, /* flags */ }, },
761 { .name = "sendmsg", .errmsg = true,
762 .arg_scnprintf = { [2] = SCA_MSG_FLAGS, /* flags */ }, },
763 { .name = "sendto", .errmsg = true,
764 .arg_scnprintf = { [3] = SCA_MSG_FLAGS, /* flags */ }, },
765 { .name = "set_tid_address", .errpid = true, },
766 { .name = "setitimer", .errmsg = true, STRARRAY(0, which, itimers), },
767 { .name = "setpgid", .errmsg = true, },
768 { .name = "setrlimit", .errmsg = true, STRARRAY(0, resource, rlimit_resources), },
769 { .name = "setxattr", .errmsg = true, },
770 { .name = "shutdown", .errmsg = true, },
771 { .name = "socket", .errmsg = true,
772 .arg_scnprintf = { [0] = SCA_STRARRAY, /* family */
773 [1] = SCA_SK_TYPE, /* type */ },
774 .arg_parm = { [0] = &strarray__socket_families, /* family */ }, },
775 { .name = "socketpair", .errmsg = true,
776 .arg_scnprintf = { [0] = SCA_STRARRAY, /* family */
777 [1] = SCA_SK_TYPE, /* type */ },
778 .arg_parm = { [0] = &strarray__socket_families, /* family */ }, },
779 { .name = "stat", .errmsg = true, .alias = "newstat", },
780 { .name = "statfs", .errmsg = true, },
781 { .name = "statx", .errmsg = true,
782 .arg_scnprintf = { [0] = SCA_FDAT, /* flags */
783 [2] = SCA_STATX_FLAGS, /* flags */
784 [3] = SCA_STATX_MASK, /* mask */ }, },
785 { .name = "swapoff", .errmsg = true,
786 .arg_scnprintf = { [0] = SCA_FILENAME, /* specialfile */ }, },
787 { .name = "swapon", .errmsg = true,
788 .arg_scnprintf = { [0] = SCA_FILENAME, /* specialfile */ }, },
789 { .name = "symlinkat", .errmsg = true,
790 .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ }, },
791 { .name = "tgkill", .errmsg = true,
792 .arg_scnprintf = { [2] = SCA_SIGNUM, /* sig */ }, },
793 { .name = "tkill", .errmsg = true,
794 .arg_scnprintf = { [1] = SCA_SIGNUM, /* sig */ }, },
795 { .name = "truncate", .errmsg = true, },
796 { .name = "uname", .errmsg = true, .alias = "newuname", },
797 { .name = "unlinkat", .errmsg = true,
798 .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ }, },
799 { .name = "utime", .errmsg = true, },
800 { .name = "utimensat", .errmsg = true,
801 .arg_scnprintf = { [0] = SCA_FDAT, /* dirfd */ }, },
802 { .name = "utimes", .errmsg = true, },
803 { .name = "vmsplice", .errmsg = true, },
804 { .name = "wait4", .errpid = true,
805 .arg_scnprintf = { [2] = SCA_WAITID_OPTIONS, /* options */ }, },
806 { .name = "waitid", .errpid = true,
807 .arg_scnprintf = { [3] = SCA_WAITID_OPTIONS, /* options */ }, },
808 { .name = "write", .errmsg = true, },
809 { .name = "writev", .errmsg = true, },
812 static int syscall_fmt__cmp(const void *name, const void *fmtp)
814 const struct syscall_fmt *fmt = fmtp;
815 return strcmp(name, fmt->name);
818 static struct syscall_fmt *syscall_fmt__find(const char *name)
820 const int nmemb = ARRAY_SIZE(syscall_fmts);
821 return bsearch(name, syscall_fmts, nmemb, sizeof(struct syscall_fmt), syscall_fmt__cmp);
825 struct event_format *tp_format;
827 struct format_field *args;
830 struct syscall_fmt *fmt;
831 size_t (**arg_scnprintf)(char *bf, size_t size, struct syscall_arg *arg);
836 * We need to have this 'calculated' boolean because in some cases we really
837 * don't know what is the duration of a syscall, for instance, when we start
838 * a session and some threads are waiting for a syscall to finish, say 'poll',
839 * in which case all we can do is to print "( ? ) for duration and for the
842 static size_t fprintf_duration(unsigned long t, bool calculated, FILE *fp)
844 double duration = (double)t / NSEC_PER_MSEC;
845 size_t printed = fprintf(fp, "(");
848 printed += fprintf(fp, " ? ");
849 else if (duration >= 1.0)
850 printed += color_fprintf(fp, PERF_COLOR_RED, "%6.3f ms", duration);
851 else if (duration >= 0.01)
852 printed += color_fprintf(fp, PERF_COLOR_YELLOW, "%6.3f ms", duration);
854 printed += color_fprintf(fp, PERF_COLOR_NORMAL, "%6.3f ms", duration);
855 return printed + fprintf(fp, "): ");
859 * filename.ptr: The filename char pointer that will be vfs_getname'd
860 * filename.entry_str_pos: Where to insert the string translated from
861 * filename.ptr by the vfs_getname tracepoint/kprobe.
863 struct thread_trace {
866 unsigned long nr_events;
867 unsigned long pfmaj, pfmin;
872 short int entry_str_pos;
874 unsigned int namelen;
882 struct intlist *syscall_stats;
885 static struct thread_trace *thread_trace__new(void)
887 struct thread_trace *ttrace = zalloc(sizeof(struct thread_trace));
890 ttrace->paths.max = -1;
892 ttrace->syscall_stats = intlist__new(NULL);
897 static struct thread_trace *thread__trace(struct thread *thread, FILE *fp)
899 struct thread_trace *ttrace;
904 if (thread__priv(thread) == NULL)
905 thread__set_priv(thread, thread_trace__new());
907 if (thread__priv(thread) == NULL)
910 ttrace = thread__priv(thread);
915 color_fprintf(fp, PERF_COLOR_RED,
916 "WARNING: not enough memory, dropping samples!\n");
920 #define TRACE_PFMAJ (1 << 0)
921 #define TRACE_PFMIN (1 << 1)
923 static const size_t trace__entry_str_size = 2048;
925 static int trace__set_fd_pathname(struct thread *thread, int fd, const char *pathname)
927 struct thread_trace *ttrace = thread__priv(thread);
929 if (fd > ttrace->paths.max) {
930 char **npath = realloc(ttrace->paths.table, (fd + 1) * sizeof(char *));
935 if (ttrace->paths.max != -1) {
936 memset(npath + ttrace->paths.max + 1, 0,
937 (fd - ttrace->paths.max) * sizeof(char *));
939 memset(npath, 0, (fd + 1) * sizeof(char *));
942 ttrace->paths.table = npath;
943 ttrace->paths.max = fd;
946 ttrace->paths.table[fd] = strdup(pathname);
948 return ttrace->paths.table[fd] != NULL ? 0 : -1;
951 static int thread__read_fd_path(struct thread *thread, int fd)
953 char linkname[PATH_MAX], pathname[PATH_MAX];
957 if (thread->pid_ == thread->tid) {
958 scnprintf(linkname, sizeof(linkname),
959 "/proc/%d/fd/%d", thread->pid_, fd);
961 scnprintf(linkname, sizeof(linkname),
962 "/proc/%d/task/%d/fd/%d", thread->pid_, thread->tid, fd);
965 if (lstat(linkname, &st) < 0 || st.st_size + 1 > (off_t)sizeof(pathname))
968 ret = readlink(linkname, pathname, sizeof(pathname));
970 if (ret < 0 || ret > st.st_size)
973 pathname[ret] = '\0';
974 return trace__set_fd_pathname(thread, fd, pathname);
977 static const char *thread__fd_path(struct thread *thread, int fd,
980 struct thread_trace *ttrace = thread__priv(thread);
988 if ((fd > ttrace->paths.max || ttrace->paths.table[fd] == NULL)) {
991 ++trace->stats.proc_getname;
992 if (thread__read_fd_path(thread, fd))
996 return ttrace->paths.table[fd];
999 static size_t syscall_arg__scnprintf_fd(char *bf, size_t size,
1000 struct syscall_arg *arg)
1003 size_t printed = scnprintf(bf, size, "%d", fd);
1004 const char *path = thread__fd_path(arg->thread, fd, arg->trace);
1007 printed += scnprintf(bf + printed, size - printed, "<%s>", path);
1012 static size_t syscall_arg__scnprintf_close_fd(char *bf, size_t size,
1013 struct syscall_arg *arg)
1016 size_t printed = syscall_arg__scnprintf_fd(bf, size, arg);
1017 struct thread_trace *ttrace = thread__priv(arg->thread);
1019 if (ttrace && fd >= 0 && fd <= ttrace->paths.max)
1020 zfree(&ttrace->paths.table[fd]);
1025 static void thread__set_filename_pos(struct thread *thread, const char *bf,
1028 struct thread_trace *ttrace = thread__priv(thread);
1030 ttrace->filename.ptr = ptr;
1031 ttrace->filename.entry_str_pos = bf - ttrace->entry_str;
1034 static size_t syscall_arg__scnprintf_filename(char *bf, size_t size,
1035 struct syscall_arg *arg)
1037 unsigned long ptr = arg->val;
1039 if (!arg->trace->vfs_getname)
1040 return scnprintf(bf, size, "%#x", ptr);
1042 thread__set_filename_pos(arg->thread, bf, ptr);
1046 static bool trace__filter_duration(struct trace *trace, double t)
1048 return t < (trace->duration_filter * NSEC_PER_MSEC);
1051 static size_t __trace__fprintf_tstamp(struct trace *trace, u64 tstamp, FILE *fp)
1053 double ts = (double)(tstamp - trace->base_time) / NSEC_PER_MSEC;
1055 return fprintf(fp, "%10.3f ", ts);
1059 * We're handling tstamp=0 as an undefined tstamp, i.e. like when we are
1060 * using ttrace->entry_time for a thread that receives a sys_exit without
1061 * first having received a sys_enter ("poll" issued before tracing session
1062 * starts, lost sys_enter exit due to ring buffer overflow).
1064 static size_t trace__fprintf_tstamp(struct trace *trace, u64 tstamp, FILE *fp)
1067 return __trace__fprintf_tstamp(trace, tstamp, fp);
1069 return fprintf(fp, " ? ");
1072 static bool done = false;
1073 static bool interrupted = false;
1075 static void sig_handler(int sig)
1078 interrupted = sig == SIGINT;
1081 static size_t trace__fprintf_entry_head(struct trace *trace, struct thread *thread,
1082 u64 duration, bool duration_calculated, u64 tstamp, FILE *fp)
1084 size_t printed = trace__fprintf_tstamp(trace, tstamp, fp);
1085 printed += fprintf_duration(duration, duration_calculated, fp);
1087 if (trace->multiple_threads) {
1088 if (trace->show_comm)
1089 printed += fprintf(fp, "%.14s/", thread__comm_str(thread));
1090 printed += fprintf(fp, "%d ", thread->tid);
1096 static int trace__process_event(struct trace *trace, struct machine *machine,
1097 union perf_event *event, struct perf_sample *sample)
1101 switch (event->header.type) {
1102 case PERF_RECORD_LOST:
1103 color_fprintf(trace->output, PERF_COLOR_RED,
1104 "LOST %" PRIu64 " events!\n", event->lost.lost);
1105 ret = machine__process_lost_event(machine, event, sample);
1108 ret = machine__process_event(machine, event, sample);
1115 static int trace__tool_process(struct perf_tool *tool,
1116 union perf_event *event,
1117 struct perf_sample *sample,
1118 struct machine *machine)
1120 struct trace *trace = container_of(tool, struct trace, tool);
1121 return trace__process_event(trace, machine, event, sample);
1124 static char *trace__machine__resolve_kernel_addr(void *vmachine, unsigned long long *addrp, char **modp)
1126 struct machine *machine = vmachine;
1128 if (machine->kptr_restrict_warned)
1131 if (symbol_conf.kptr_restrict) {
1132 pr_warning("Kernel address maps (/proc/{kallsyms,modules}) are restricted.\n\n"
1133 "Check /proc/sys/kernel/kptr_restrict.\n\n"
1134 "Kernel samples will not be resolved.\n");
1135 machine->kptr_restrict_warned = true;
1139 return machine__resolve_kernel_addr(vmachine, addrp, modp);
1142 static int trace__symbols_init(struct trace *trace, struct perf_evlist *evlist)
1144 int err = symbol__init(NULL);
1149 trace->host = machine__new_host();
1150 if (trace->host == NULL)
1153 if (trace_event__register_resolver(trace->host, trace__machine__resolve_kernel_addr) < 0)
1156 err = __machine__synthesize_threads(trace->host, &trace->tool, &trace->opts.target,
1157 evlist->threads, trace__tool_process, false,
1158 trace->opts.proc_map_timeout);
1165 static int syscall__set_arg_fmts(struct syscall *sc)
1167 struct format_field *field;
1170 sc->arg_scnprintf = calloc(sc->nr_args, sizeof(void *));
1171 if (sc->arg_scnprintf == NULL)
1175 sc->arg_parm = sc->fmt->arg_parm;
1177 for (field = sc->args; field; field = field->next) {
1178 if (sc->fmt && sc->fmt->arg_scnprintf[idx])
1179 sc->arg_scnprintf[idx] = sc->fmt->arg_scnprintf[idx];
1180 else if (strcmp(field->type, "const char *") == 0 &&
1181 (strcmp(field->name, "filename") == 0 ||
1182 strcmp(field->name, "path") == 0 ||
1183 strcmp(field->name, "pathname") == 0))
1184 sc->arg_scnprintf[idx] = SCA_FILENAME;
1185 else if (field->flags & FIELD_IS_POINTER)
1186 sc->arg_scnprintf[idx] = syscall_arg__scnprintf_hex;
1187 else if (strcmp(field->type, "pid_t") == 0)
1188 sc->arg_scnprintf[idx] = SCA_PID;
1189 else if (strcmp(field->type, "umode_t") == 0)
1190 sc->arg_scnprintf[idx] = SCA_MODE_T;
1191 else if ((strcmp(field->type, "int") == 0 ||
1192 strcmp(field->type, "unsigned int") == 0 ||
1193 strcmp(field->type, "long") == 0) &&
1194 (len = strlen(field->name)) >= 2 &&
1195 strcmp(field->name + len - 2, "fd") == 0) {
1197 * /sys/kernel/tracing/events/syscalls/sys_enter*
1198 * egrep 'field:.*fd;' .../format|sed -r 's/.*field:([a-z ]+) [a-z_]*fd.+/\1/g'|sort|uniq -c
1203 sc->arg_scnprintf[idx] = SCA_FD;
1211 static int trace__read_syscall_info(struct trace *trace, int id)
1215 const char *name = syscalltbl__name(trace->sctbl, id);
1220 if (id > trace->syscalls.max) {
1221 struct syscall *nsyscalls = realloc(trace->syscalls.table, (id + 1) * sizeof(*sc));
1223 if (nsyscalls == NULL)
1226 if (trace->syscalls.max != -1) {
1227 memset(nsyscalls + trace->syscalls.max + 1, 0,
1228 (id - trace->syscalls.max) * sizeof(*sc));
1230 memset(nsyscalls, 0, (id + 1) * sizeof(*sc));
1233 trace->syscalls.table = nsyscalls;
1234 trace->syscalls.max = id;
1237 sc = trace->syscalls.table + id;
1240 sc->fmt = syscall_fmt__find(sc->name);
1242 snprintf(tp_name, sizeof(tp_name), "sys_enter_%s", sc->name);
1243 sc->tp_format = trace_event__tp_format("syscalls", tp_name);
1245 if (IS_ERR(sc->tp_format) && sc->fmt && sc->fmt->alias) {
1246 snprintf(tp_name, sizeof(tp_name), "sys_enter_%s", sc->fmt->alias);
1247 sc->tp_format = trace_event__tp_format("syscalls", tp_name);
1250 if (IS_ERR(sc->tp_format))
1253 sc->args = sc->tp_format->format.fields;
1254 sc->nr_args = sc->tp_format->format.nr_fields;
1256 * We need to check and discard the first variable '__syscall_nr'
1257 * or 'nr' that mean the syscall number. It is needless here.
1258 * So drop '__syscall_nr' or 'nr' field but does not exist on older kernels.
1260 if (sc->args && (!strcmp(sc->args->name, "__syscall_nr") || !strcmp(sc->args->name, "nr"))) {
1261 sc->args = sc->args->next;
1265 sc->is_exit = !strcmp(name, "exit_group") || !strcmp(name, "exit");
1267 return syscall__set_arg_fmts(sc);
1270 static int trace__validate_ev_qualifier(struct trace *trace)
1273 struct str_node *pos;
1275 trace->ev_qualifier_ids.nr = strlist__nr_entries(trace->ev_qualifier);
1276 trace->ev_qualifier_ids.entries = malloc(trace->ev_qualifier_ids.nr *
1277 sizeof(trace->ev_qualifier_ids.entries[0]));
1279 if (trace->ev_qualifier_ids.entries == NULL) {
1280 fputs("Error:\tNot enough memory for allocating events qualifier ids\n",
1288 strlist__for_each_entry(pos, trace->ev_qualifier) {
1289 const char *sc = pos->s;
1290 int id = syscalltbl__id(trace->sctbl, sc);
1294 fputs("Error:\tInvalid syscall ", trace->output);
1297 fputs(", ", trace->output);
1300 fputs(sc, trace->output);
1303 trace->ev_qualifier_ids.entries[i++] = id;
1307 fputs("\nHint:\ttry 'perf list syscalls:sys_enter_*'"
1308 "\nHint:\tand: 'man syscalls'\n", trace->output);
1309 zfree(&trace->ev_qualifier_ids.entries);
1310 trace->ev_qualifier_ids.nr = 0;
1317 * args is to be interpreted as a series of longs but we need to handle
1318 * 8-byte unaligned accesses. args points to raw_data within the event
1319 * and raw_data is guaranteed to be 8-byte unaligned because it is
1320 * preceded by raw_size which is a u32. So we need to copy args to a temp
1321 * variable to read it. Most notably this avoids extended load instructions
1322 * on unaligned addresses
1325 static size_t syscall__scnprintf_args(struct syscall *sc, char *bf, size_t size,
1326 unsigned char *args, struct trace *trace,
1327 struct thread *thread)
1333 if (sc->args != NULL) {
1334 struct format_field *field;
1336 struct syscall_arg arg = {
1343 for (field = sc->args; field;
1344 field = field->next, ++arg.idx, bit <<= 1) {
1348 /* special care for unaligned accesses */
1349 p = args + sizeof(unsigned long) * arg.idx;
1350 memcpy(&val, p, sizeof(val));
1353 * Suppress this argument if its value is zero and
1354 * and we don't have a string associated in an
1358 !(sc->arg_scnprintf &&
1359 sc->arg_scnprintf[arg.idx] == SCA_STRARRAY &&
1360 sc->arg_parm[arg.idx]))
1363 printed += scnprintf(bf + printed, size - printed,
1364 "%s%s: ", printed ? ", " : "", field->name);
1365 if (sc->arg_scnprintf && sc->arg_scnprintf[arg.idx]) {
1368 arg.parm = sc->arg_parm[arg.idx];
1369 printed += sc->arg_scnprintf[arg.idx](bf + printed,
1370 size - printed, &arg);
1372 printed += scnprintf(bf + printed, size - printed,
1376 } else if (IS_ERR(sc->tp_format)) {
1378 * If we managed to read the tracepoint /format file, then we
1379 * may end up not having any args, like with gettid(), so only
1380 * print the raw args when we didn't manage to read it.
1385 /* special care for unaligned accesses */
1386 p = args + sizeof(unsigned long) * i;
1387 memcpy(&val, p, sizeof(val));
1388 printed += scnprintf(bf + printed, size - printed,
1390 printed ? ", " : "", i, val);
1398 typedef int (*tracepoint_handler)(struct trace *trace, struct perf_evsel *evsel,
1399 union perf_event *event,
1400 struct perf_sample *sample);
1402 static struct syscall *trace__syscall_info(struct trace *trace,
1403 struct perf_evsel *evsel, int id)
1409 * XXX: Noticed on x86_64, reproduced as far back as 3.0.36, haven't tried
1410 * before that, leaving at a higher verbosity level till that is
1411 * explained. Reproduced with plain ftrace with:
1413 * echo 1 > /t/events/raw_syscalls/sys_exit/enable
1414 * grep "NR -1 " /t/trace_pipe
1416 * After generating some load on the machine.
1420 fprintf(trace->output, "Invalid syscall %d id, skipping (%s, %" PRIu64 ") ...\n",
1421 id, perf_evsel__name(evsel), ++n);
1426 if ((id > trace->syscalls.max || trace->syscalls.table[id].name == NULL) &&
1427 trace__read_syscall_info(trace, id))
1430 if ((id > trace->syscalls.max || trace->syscalls.table[id].name == NULL))
1433 return &trace->syscalls.table[id];
1437 fprintf(trace->output, "Problems reading syscall %d", id);
1438 if (id <= trace->syscalls.max && trace->syscalls.table[id].name != NULL)
1439 fprintf(trace->output, "(%s)", trace->syscalls.table[id].name);
1440 fputs(" information\n", trace->output);
1445 static void thread__update_stats(struct thread_trace *ttrace,
1446 int id, struct perf_sample *sample)
1448 struct int_node *inode;
1449 struct stats *stats;
1452 inode = intlist__findnew(ttrace->syscall_stats, id);
1456 stats = inode->priv;
1457 if (stats == NULL) {
1458 stats = malloc(sizeof(struct stats));
1462 inode->priv = stats;
1465 if (ttrace->entry_time && sample->time > ttrace->entry_time)
1466 duration = sample->time - ttrace->entry_time;
1468 update_stats(stats, duration);
1471 static int trace__printf_interrupted_entry(struct trace *trace, struct perf_sample *sample)
1473 struct thread_trace *ttrace;
1477 if (trace->current == NULL)
1480 ttrace = thread__priv(trace->current);
1482 if (!ttrace->entry_pending)
1485 duration = sample->time - ttrace->entry_time;
1487 printed = trace__fprintf_entry_head(trace, trace->current, duration, true, ttrace->entry_time, trace->output);
1488 printed += fprintf(trace->output, "%-70s) ...\n", ttrace->entry_str);
1489 ttrace->entry_pending = false;
1494 static int trace__sys_enter(struct trace *trace, struct perf_evsel *evsel,
1495 union perf_event *event __maybe_unused,
1496 struct perf_sample *sample)
1501 struct thread *thread;
1502 int id = perf_evsel__sc_tp_uint(evsel, id, sample), err = -1;
1503 struct syscall *sc = trace__syscall_info(trace, evsel, id);
1504 struct thread_trace *ttrace;
1509 thread = machine__findnew_thread(trace->host, sample->pid, sample->tid);
1510 ttrace = thread__trace(thread, trace->output);
1514 args = perf_evsel__sc_tp_ptr(evsel, args, sample);
1516 if (ttrace->entry_str == NULL) {
1517 ttrace->entry_str = malloc(trace__entry_str_size);
1518 if (!ttrace->entry_str)
1522 if (!(trace->duration_filter || trace->summary_only || trace->min_stack))
1523 trace__printf_interrupted_entry(trace, sample);
1525 ttrace->entry_time = sample->time;
1526 msg = ttrace->entry_str;
1527 printed += scnprintf(msg + printed, trace__entry_str_size - printed, "%s(", sc->name);
1529 printed += syscall__scnprintf_args(sc, msg + printed, trace__entry_str_size - printed,
1530 args, trace, thread);
1533 if (!(trace->duration_filter || trace->summary_only || trace->min_stack)) {
1534 trace__fprintf_entry_head(trace, thread, 0, false, ttrace->entry_time, trace->output);
1535 fprintf(trace->output, "%-70s)\n", ttrace->entry_str);
1538 ttrace->entry_pending = true;
1539 /* See trace__vfs_getname & trace__sys_exit */
1540 ttrace->filename.pending_open = false;
1543 if (trace->current != thread) {
1544 thread__put(trace->current);
1545 trace->current = thread__get(thread);
1549 thread__put(thread);
1553 static int trace__resolve_callchain(struct trace *trace, struct perf_evsel *evsel,
1554 struct perf_sample *sample,
1555 struct callchain_cursor *cursor)
1557 struct addr_location al;
1559 if (machine__resolve(trace->host, &al, sample) < 0 ||
1560 thread__resolve_callchain(al.thread, cursor, evsel, sample, NULL, NULL, trace->max_stack))
1566 static int trace__fprintf_callchain(struct trace *trace, struct perf_sample *sample)
1568 /* TODO: user-configurable print_opts */
1569 const unsigned int print_opts = EVSEL__PRINT_SYM |
1571 EVSEL__PRINT_UNKNOWN_AS_ADDR;
1573 return sample__fprintf_callchain(sample, 38, print_opts, &callchain_cursor, trace->output);
1576 static int trace__sys_exit(struct trace *trace, struct perf_evsel *evsel,
1577 union perf_event *event __maybe_unused,
1578 struct perf_sample *sample)
1582 bool duration_calculated = false;
1583 struct thread *thread;
1584 int id = perf_evsel__sc_tp_uint(evsel, id, sample), err = -1, callchain_ret = 0;
1585 struct syscall *sc = trace__syscall_info(trace, evsel, id);
1586 struct thread_trace *ttrace;
1591 thread = machine__findnew_thread(trace->host, sample->pid, sample->tid);
1592 ttrace = thread__trace(thread, trace->output);
1597 thread__update_stats(ttrace, id, sample);
1599 ret = perf_evsel__sc_tp_uint(evsel, ret, sample);
1601 if (id == trace->open_id && ret >= 0 && ttrace->filename.pending_open) {
1602 trace__set_fd_pathname(thread, ret, ttrace->filename.name);
1603 ttrace->filename.pending_open = false;
1604 ++trace->stats.vfs_getname;
1607 if (ttrace->entry_time) {
1608 duration = sample->time - ttrace->entry_time;
1609 if (trace__filter_duration(trace, duration))
1611 duration_calculated = true;
1612 } else if (trace->duration_filter)
1615 if (sample->callchain) {
1616 callchain_ret = trace__resolve_callchain(trace, evsel, sample, &callchain_cursor);
1617 if (callchain_ret == 0) {
1618 if (callchain_cursor.nr < trace->min_stack)
1624 if (trace->summary_only)
1627 trace__fprintf_entry_head(trace, thread, duration, duration_calculated, ttrace->entry_time, trace->output);
1629 if (ttrace->entry_pending) {
1630 fprintf(trace->output, "%-70s", ttrace->entry_str);
1632 fprintf(trace->output, " ... [");
1633 color_fprintf(trace->output, PERF_COLOR_YELLOW, "continued");
1634 fprintf(trace->output, "]: %s()", sc->name);
1637 if (sc->fmt == NULL) {
1639 fprintf(trace->output, ") = %ld", ret);
1640 } else if (ret < 0 && (sc->fmt->errmsg || sc->fmt->errpid)) {
1641 char bf[STRERR_BUFSIZE];
1642 const char *emsg = str_error_r(-ret, bf, sizeof(bf)),
1643 *e = audit_errno_to_name(-ret);
1645 fprintf(trace->output, ") = -1 %s %s", e, emsg);
1646 } else if (ret == 0 && sc->fmt->timeout)
1647 fprintf(trace->output, ") = 0 Timeout");
1648 else if (sc->fmt->hexret)
1649 fprintf(trace->output, ") = %#lx", ret);
1650 else if (sc->fmt->errpid) {
1651 struct thread *child = machine__find_thread(trace->host, ret, ret);
1653 if (child != NULL) {
1654 fprintf(trace->output, ") = %ld", ret);
1655 if (child->comm_set)
1656 fprintf(trace->output, " (%s)", thread__comm_str(child));
1662 fputc('\n', trace->output);
1664 if (callchain_ret > 0)
1665 trace__fprintf_callchain(trace, sample);
1666 else if (callchain_ret < 0)
1667 pr_err("Problem processing %s callchain, skipping...\n", perf_evsel__name(evsel));
1669 ttrace->entry_pending = false;
1672 thread__put(thread);
1676 static int trace__vfs_getname(struct trace *trace, struct perf_evsel *evsel,
1677 union perf_event *event __maybe_unused,
1678 struct perf_sample *sample)
1680 struct thread *thread = machine__findnew_thread(trace->host, sample->pid, sample->tid);
1681 struct thread_trace *ttrace;
1682 size_t filename_len, entry_str_len, to_move;
1683 ssize_t remaining_space;
1685 const char *filename = perf_evsel__rawptr(evsel, sample, "pathname");
1690 ttrace = thread__priv(thread);
1694 filename_len = strlen(filename);
1695 if (filename_len == 0)
1698 if (ttrace->filename.namelen < filename_len) {
1699 char *f = realloc(ttrace->filename.name, filename_len + 1);
1704 ttrace->filename.namelen = filename_len;
1705 ttrace->filename.name = f;
1708 strcpy(ttrace->filename.name, filename);
1709 ttrace->filename.pending_open = true;
1711 if (!ttrace->filename.ptr)
1714 entry_str_len = strlen(ttrace->entry_str);
1715 remaining_space = trace__entry_str_size - entry_str_len - 1; /* \0 */
1716 if (remaining_space <= 0)
1719 if (filename_len > (size_t)remaining_space) {
1720 filename += filename_len - remaining_space;
1721 filename_len = remaining_space;
1724 to_move = entry_str_len - ttrace->filename.entry_str_pos + 1; /* \0 */
1725 pos = ttrace->entry_str + ttrace->filename.entry_str_pos;
1726 memmove(pos + filename_len, pos, to_move);
1727 memcpy(pos, filename, filename_len);
1729 ttrace->filename.ptr = 0;
1730 ttrace->filename.entry_str_pos = 0;
1732 thread__put(thread);
1737 static int trace__sched_stat_runtime(struct trace *trace, struct perf_evsel *evsel,
1738 union perf_event *event __maybe_unused,
1739 struct perf_sample *sample)
1741 u64 runtime = perf_evsel__intval(evsel, sample, "runtime");
1742 double runtime_ms = (double)runtime / NSEC_PER_MSEC;
1743 struct thread *thread = machine__findnew_thread(trace->host,
1746 struct thread_trace *ttrace = thread__trace(thread, trace->output);
1751 ttrace->runtime_ms += runtime_ms;
1752 trace->runtime_ms += runtime_ms;
1754 thread__put(thread);
1758 fprintf(trace->output, "%s: comm=%s,pid=%u,runtime=%" PRIu64 ",vruntime=%" PRIu64 ")\n",
1760 perf_evsel__strval(evsel, sample, "comm"),
1761 (pid_t)perf_evsel__intval(evsel, sample, "pid"),
1763 perf_evsel__intval(evsel, sample, "vruntime"));
1767 static void bpf_output__printer(enum binary_printer_ops op,
1768 unsigned int val, void *extra)
1770 FILE *output = extra;
1771 unsigned char ch = (unsigned char)val;
1774 case BINARY_PRINT_CHAR_DATA:
1775 fprintf(output, "%c", isprint(ch) ? ch : '.');
1777 case BINARY_PRINT_DATA_BEGIN:
1778 case BINARY_PRINT_LINE_BEGIN:
1779 case BINARY_PRINT_ADDR:
1780 case BINARY_PRINT_NUM_DATA:
1781 case BINARY_PRINT_NUM_PAD:
1782 case BINARY_PRINT_SEP:
1783 case BINARY_PRINT_CHAR_PAD:
1784 case BINARY_PRINT_LINE_END:
1785 case BINARY_PRINT_DATA_END:
1791 static void bpf_output__fprintf(struct trace *trace,
1792 struct perf_sample *sample)
1794 print_binary(sample->raw_data, sample->raw_size, 8,
1795 bpf_output__printer, trace->output);
1798 static int trace__event_handler(struct trace *trace, struct perf_evsel *evsel,
1799 union perf_event *event __maybe_unused,
1800 struct perf_sample *sample)
1802 int callchain_ret = 0;
1804 if (sample->callchain) {
1805 callchain_ret = trace__resolve_callchain(trace, evsel, sample, &callchain_cursor);
1806 if (callchain_ret == 0) {
1807 if (callchain_cursor.nr < trace->min_stack)
1813 trace__printf_interrupted_entry(trace, sample);
1814 trace__fprintf_tstamp(trace, sample->time, trace->output);
1816 if (trace->trace_syscalls)
1817 fprintf(trace->output, "( ): ");
1819 fprintf(trace->output, "%s:", evsel->name);
1821 if (perf_evsel__is_bpf_output(evsel)) {
1822 bpf_output__fprintf(trace, sample);
1823 } else if (evsel->tp_format) {
1824 event_format__fprintf(evsel->tp_format, sample->cpu,
1825 sample->raw_data, sample->raw_size,
1829 fprintf(trace->output, ")\n");
1831 if (callchain_ret > 0)
1832 trace__fprintf_callchain(trace, sample);
1833 else if (callchain_ret < 0)
1834 pr_err("Problem processing %s callchain, skipping...\n", perf_evsel__name(evsel));
1839 static void print_location(FILE *f, struct perf_sample *sample,
1840 struct addr_location *al,
1841 bool print_dso, bool print_sym)
1844 if ((verbose > 0 || print_dso) && al->map)
1845 fprintf(f, "%s@", al->map->dso->long_name);
1847 if ((verbose > 0 || print_sym) && al->sym)
1848 fprintf(f, "%s+0x%" PRIx64, al->sym->name,
1849 al->addr - al->sym->start);
1851 fprintf(f, "0x%" PRIx64, al->addr);
1853 fprintf(f, "0x%" PRIx64, sample->addr);
1856 static int trace__pgfault(struct trace *trace,
1857 struct perf_evsel *evsel,
1858 union perf_event *event __maybe_unused,
1859 struct perf_sample *sample)
1861 struct thread *thread;
1862 struct addr_location al;
1863 char map_type = 'd';
1864 struct thread_trace *ttrace;
1866 int callchain_ret = 0;
1868 thread = machine__findnew_thread(trace->host, sample->pid, sample->tid);
1870 if (sample->callchain) {
1871 callchain_ret = trace__resolve_callchain(trace, evsel, sample, &callchain_cursor);
1872 if (callchain_ret == 0) {
1873 if (callchain_cursor.nr < trace->min_stack)
1879 ttrace = thread__trace(thread, trace->output);
1883 if (evsel->attr.config == PERF_COUNT_SW_PAGE_FAULTS_MAJ)
1888 if (trace->summary_only)
1891 thread__find_addr_location(thread, sample->cpumode, MAP__FUNCTION,
1894 trace__fprintf_entry_head(trace, thread, 0, true, sample->time, trace->output);
1896 fprintf(trace->output, "%sfault [",
1897 evsel->attr.config == PERF_COUNT_SW_PAGE_FAULTS_MAJ ?
1900 print_location(trace->output, sample, &al, false, true);
1902 fprintf(trace->output, "] => ");
1904 thread__find_addr_location(thread, sample->cpumode, MAP__VARIABLE,
1908 thread__find_addr_location(thread, sample->cpumode,
1909 MAP__FUNCTION, sample->addr, &al);
1917 print_location(trace->output, sample, &al, true, false);
1919 fprintf(trace->output, " (%c%c)\n", map_type, al.level);
1921 if (callchain_ret > 0)
1922 trace__fprintf_callchain(trace, sample);
1923 else if (callchain_ret < 0)
1924 pr_err("Problem processing %s callchain, skipping...\n", perf_evsel__name(evsel));
1928 thread__put(thread);
1932 static void trace__set_base_time(struct trace *trace,
1933 struct perf_evsel *evsel,
1934 struct perf_sample *sample)
1937 * BPF events were not setting PERF_SAMPLE_TIME, so be more robust
1938 * and don't use sample->time unconditionally, we may end up having
1939 * some other event in the future without PERF_SAMPLE_TIME for good
1940 * reason, i.e. we may not be interested in its timestamps, just in
1941 * it taking place, picking some piece of information when it
1942 * appears in our event stream (vfs_getname comes to mind).
1944 if (trace->base_time == 0 && !trace->full_time &&
1945 (evsel->attr.sample_type & PERF_SAMPLE_TIME))
1946 trace->base_time = sample->time;
1949 static int trace__process_sample(struct perf_tool *tool,
1950 union perf_event *event,
1951 struct perf_sample *sample,
1952 struct perf_evsel *evsel,
1953 struct machine *machine __maybe_unused)
1955 struct trace *trace = container_of(tool, struct trace, tool);
1956 struct thread *thread;
1959 tracepoint_handler handler = evsel->handler;
1961 thread = machine__findnew_thread(trace->host, sample->pid, sample->tid);
1962 if (thread && thread__is_filtered(thread))
1965 trace__set_base_time(trace, evsel, sample);
1969 handler(trace, evsel, event, sample);
1972 thread__put(thread);
1976 static int trace__record(struct trace *trace, int argc, const char **argv)
1978 unsigned int rec_argc, i, j;
1979 const char **rec_argv;
1980 const char * const record_args[] = {
1987 const char * const sc_args[] = { "-e", };
1988 unsigned int sc_args_nr = ARRAY_SIZE(sc_args);
1989 const char * const majpf_args[] = { "-e", "major-faults" };
1990 unsigned int majpf_args_nr = ARRAY_SIZE(majpf_args);
1991 const char * const minpf_args[] = { "-e", "minor-faults" };
1992 unsigned int minpf_args_nr = ARRAY_SIZE(minpf_args);
1994 /* +1 is for the event string below */
1995 rec_argc = ARRAY_SIZE(record_args) + sc_args_nr + 1 +
1996 majpf_args_nr + minpf_args_nr + argc;
1997 rec_argv = calloc(rec_argc + 1, sizeof(char *));
1999 if (rec_argv == NULL)
2003 for (i = 0; i < ARRAY_SIZE(record_args); i++)
2004 rec_argv[j++] = record_args[i];
2006 if (trace->trace_syscalls) {
2007 for (i = 0; i < sc_args_nr; i++)
2008 rec_argv[j++] = sc_args[i];
2010 /* event string may be different for older kernels - e.g., RHEL6 */
2011 if (is_valid_tracepoint("raw_syscalls:sys_enter"))
2012 rec_argv[j++] = "raw_syscalls:sys_enter,raw_syscalls:sys_exit";
2013 else if (is_valid_tracepoint("syscalls:sys_enter"))
2014 rec_argv[j++] = "syscalls:sys_enter,syscalls:sys_exit";
2016 pr_err("Neither raw_syscalls nor syscalls events exist.\n");
2021 if (trace->trace_pgfaults & TRACE_PFMAJ)
2022 for (i = 0; i < majpf_args_nr; i++)
2023 rec_argv[j++] = majpf_args[i];
2025 if (trace->trace_pgfaults & TRACE_PFMIN)
2026 for (i = 0; i < minpf_args_nr; i++)
2027 rec_argv[j++] = minpf_args[i];
2029 for (i = 0; i < (unsigned int)argc; i++)
2030 rec_argv[j++] = argv[i];
2032 return cmd_record(j, rec_argv);
2035 static size_t trace__fprintf_thread_summary(struct trace *trace, FILE *fp);
2037 static bool perf_evlist__add_vfs_getname(struct perf_evlist *evlist)
2039 struct perf_evsel *evsel = perf_evsel__newtp("probe", "vfs_getname");
2044 if (perf_evsel__field(evsel, "pathname") == NULL) {
2045 perf_evsel__delete(evsel);
2049 evsel->handler = trace__vfs_getname;
2050 perf_evlist__add(evlist, evsel);
2054 static struct perf_evsel *perf_evsel__new_pgfault(u64 config)
2056 struct perf_evsel *evsel;
2057 struct perf_event_attr attr = {
2058 .type = PERF_TYPE_SOFTWARE,
2062 attr.config = config;
2063 attr.sample_period = 1;
2065 event_attr_init(&attr);
2067 evsel = perf_evsel__new(&attr);
2069 evsel->handler = trace__pgfault;
2074 static void trace__handle_event(struct trace *trace, union perf_event *event, struct perf_sample *sample)
2076 const u32 type = event->header.type;
2077 struct perf_evsel *evsel;
2079 if (type != PERF_RECORD_SAMPLE) {
2080 trace__process_event(trace, trace->host, event, sample);
2084 evsel = perf_evlist__id2evsel(trace->evlist, sample->id);
2085 if (evsel == NULL) {
2086 fprintf(trace->output, "Unknown tp ID %" PRIu64 ", skipping...\n", sample->id);
2090 trace__set_base_time(trace, evsel, sample);
2092 if (evsel->attr.type == PERF_TYPE_TRACEPOINT &&
2093 sample->raw_data == NULL) {
2094 fprintf(trace->output, "%s sample with no payload for tid: %d, cpu %d, raw_size=%d, skipping...\n",
2095 perf_evsel__name(evsel), sample->tid,
2096 sample->cpu, sample->raw_size);
2098 tracepoint_handler handler = evsel->handler;
2099 handler(trace, evsel, event, sample);
2103 static int trace__add_syscall_newtp(struct trace *trace)
2106 struct perf_evlist *evlist = trace->evlist;
2107 struct perf_evsel *sys_enter, *sys_exit;
2109 sys_enter = perf_evsel__syscall_newtp("sys_enter", trace__sys_enter);
2110 if (sys_enter == NULL)
2113 if (perf_evsel__init_sc_tp_ptr_field(sys_enter, args))
2114 goto out_delete_sys_enter;
2116 sys_exit = perf_evsel__syscall_newtp("sys_exit", trace__sys_exit);
2117 if (sys_exit == NULL)
2118 goto out_delete_sys_enter;
2120 if (perf_evsel__init_sc_tp_uint_field(sys_exit, ret))
2121 goto out_delete_sys_exit;
2123 perf_evlist__add(evlist, sys_enter);
2124 perf_evlist__add(evlist, sys_exit);
2126 if (callchain_param.enabled && !trace->kernel_syscallchains) {
2128 * We're interested only in the user space callchain
2129 * leading to the syscall, allow overriding that for
2130 * debugging reasons using --kernel_syscall_callchains
2132 sys_exit->attr.exclude_callchain_kernel = 1;
2135 trace->syscalls.events.sys_enter = sys_enter;
2136 trace->syscalls.events.sys_exit = sys_exit;
2142 out_delete_sys_exit:
2143 perf_evsel__delete_priv(sys_exit);
2144 out_delete_sys_enter:
2145 perf_evsel__delete_priv(sys_enter);
2149 static int trace__set_ev_qualifier_filter(struct trace *trace)
2152 struct perf_evsel *sys_exit;
2153 char *filter = asprintf_expr_inout_ints("id", !trace->not_ev_qualifier,
2154 trace->ev_qualifier_ids.nr,
2155 trace->ev_qualifier_ids.entries);
2160 if (!perf_evsel__append_tp_filter(trace->syscalls.events.sys_enter,
2162 sys_exit = trace->syscalls.events.sys_exit;
2163 err = perf_evsel__append_tp_filter(sys_exit, filter);
2174 static int trace__run(struct trace *trace, int argc, const char **argv)
2176 struct perf_evlist *evlist = trace->evlist;
2177 struct perf_evsel *evsel, *pgfault_maj = NULL, *pgfault_min = NULL;
2179 unsigned long before;
2180 const bool forks = argc > 0;
2181 bool draining = false;
2185 if (trace->trace_syscalls && trace__add_syscall_newtp(trace))
2186 goto out_error_raw_syscalls;
2188 if (trace->trace_syscalls)
2189 trace->vfs_getname = perf_evlist__add_vfs_getname(evlist);
2191 if ((trace->trace_pgfaults & TRACE_PFMAJ)) {
2192 pgfault_maj = perf_evsel__new_pgfault(PERF_COUNT_SW_PAGE_FAULTS_MAJ);
2193 if (pgfault_maj == NULL)
2195 perf_evlist__add(evlist, pgfault_maj);
2198 if ((trace->trace_pgfaults & TRACE_PFMIN)) {
2199 pgfault_min = perf_evsel__new_pgfault(PERF_COUNT_SW_PAGE_FAULTS_MIN);
2200 if (pgfault_min == NULL)
2202 perf_evlist__add(evlist, pgfault_min);
2206 perf_evlist__add_newtp(evlist, "sched", "sched_stat_runtime",
2207 trace__sched_stat_runtime))
2208 goto out_error_sched_stat_runtime;
2210 err = perf_evlist__create_maps(evlist, &trace->opts.target);
2212 fprintf(trace->output, "Problems parsing the target to trace, check your options!\n");
2213 goto out_delete_evlist;
2216 err = trace__symbols_init(trace, evlist);
2218 fprintf(trace->output, "Problems initializing symbol libraries!\n");
2219 goto out_delete_evlist;
2222 perf_evlist__config(evlist, &trace->opts, NULL);
2224 if (callchain_param.enabled) {
2225 bool use_identifier = false;
2227 if (trace->syscalls.events.sys_exit) {
2228 perf_evsel__config_callchain(trace->syscalls.events.sys_exit,
2229 &trace->opts, &callchain_param);
2230 use_identifier = true;
2234 perf_evsel__config_callchain(pgfault_maj, &trace->opts, &callchain_param);
2235 use_identifier = true;
2239 perf_evsel__config_callchain(pgfault_min, &trace->opts, &callchain_param);
2240 use_identifier = true;
2243 if (use_identifier) {
2245 * Now we have evsels with different sample_ids, use
2246 * PERF_SAMPLE_IDENTIFIER to map from sample to evsel
2247 * from a fixed position in each ring buffer record.
2249 * As of this the changeset introducing this comment, this
2250 * isn't strictly needed, as the fields that can come before
2251 * PERF_SAMPLE_ID are all used, but we'll probably disable
2252 * some of those for things like copying the payload of
2253 * pointer syscall arguments, and for vfs_getname we don't
2254 * need PERF_SAMPLE_ADDR and PERF_SAMPLE_IP, so do this
2255 * here as a warning we need to use PERF_SAMPLE_IDENTIFIER.
2257 perf_evlist__set_sample_bit(evlist, IDENTIFIER);
2258 perf_evlist__reset_sample_bit(evlist, ID);
2262 signal(SIGCHLD, sig_handler);
2263 signal(SIGINT, sig_handler);
2266 err = perf_evlist__prepare_workload(evlist, &trace->opts.target,
2269 fprintf(trace->output, "Couldn't run the workload!\n");
2270 goto out_delete_evlist;
2274 err = perf_evlist__open(evlist);
2276 goto out_error_open;
2278 err = bpf__apply_obj_config();
2280 char errbuf[BUFSIZ];
2282 bpf__strerror_apply_obj_config(err, errbuf, sizeof(errbuf));
2283 pr_err("ERROR: Apply config to BPF failed: %s\n",
2285 goto out_error_open;
2289 * Better not use !target__has_task() here because we need to cover the
2290 * case where no threads were specified in the command line, but a
2291 * workload was, and in that case we will fill in the thread_map when
2292 * we fork the workload in perf_evlist__prepare_workload.
2294 if (trace->filter_pids.nr > 0)
2295 err = perf_evlist__set_filter_pids(evlist, trace->filter_pids.nr, trace->filter_pids.entries);
2296 else if (thread_map__pid(evlist->threads, 0) == -1)
2297 err = perf_evlist__set_filter_pid(evlist, getpid());
2302 if (trace->ev_qualifier_ids.nr > 0) {
2303 err = trace__set_ev_qualifier_filter(trace);
2307 pr_debug("event qualifier tracepoint filter: %s\n",
2308 trace->syscalls.events.sys_exit->filter);
2311 err = perf_evlist__apply_filters(evlist, &evsel);
2313 goto out_error_apply_filters;
2315 err = perf_evlist__mmap(evlist, trace->opts.mmap_pages, false);
2317 goto out_error_mmap;
2319 if (!target__none(&trace->opts.target) && !trace->opts.initial_delay)
2320 perf_evlist__enable(evlist);
2323 perf_evlist__start_workload(evlist);
2325 if (trace->opts.initial_delay) {
2326 usleep(trace->opts.initial_delay * 1000);
2327 perf_evlist__enable(evlist);
2330 trace->multiple_threads = thread_map__pid(evlist->threads, 0) == -1 ||
2331 evlist->threads->nr > 1 ||
2332 perf_evlist__first(evlist)->attr.inherit;
2334 before = trace->nr_events;
2336 for (i = 0; i < evlist->nr_mmaps; i++) {
2337 union perf_event *event;
2339 while ((event = perf_evlist__mmap_read(evlist, i)) != NULL) {
2340 struct perf_sample sample;
2344 err = perf_evlist__parse_sample(evlist, event, &sample);
2346 fprintf(trace->output, "Can't parse sample, err = %d, skipping...\n", err);
2350 trace__handle_event(trace, event, &sample);
2352 perf_evlist__mmap_consume(evlist, i);
2357 if (done && !draining) {
2358 perf_evlist__disable(evlist);
2364 if (trace->nr_events == before) {
2365 int timeout = done ? 100 : -1;
2367 if (!draining && perf_evlist__poll(evlist, timeout) > 0) {
2368 if (perf_evlist__filter_pollfd(evlist, POLLERR | POLLHUP) == 0)
2378 thread__zput(trace->current);
2380 perf_evlist__disable(evlist);
2384 trace__fprintf_thread_summary(trace, trace->output);
2386 if (trace->show_tool_stats) {
2387 fprintf(trace->output, "Stats:\n "
2388 " vfs_getname : %" PRIu64 "\n"
2389 " proc_getname: %" PRIu64 "\n",
2390 trace->stats.vfs_getname,
2391 trace->stats.proc_getname);
2396 perf_evlist__delete(evlist);
2397 trace->evlist = NULL;
2398 trace->live = false;
2401 char errbuf[BUFSIZ];
2403 out_error_sched_stat_runtime:
2404 tracing_path__strerror_open_tp(errno, errbuf, sizeof(errbuf), "sched", "sched_stat_runtime");
2407 out_error_raw_syscalls:
2408 tracing_path__strerror_open_tp(errno, errbuf, sizeof(errbuf), "raw_syscalls", "sys_(enter|exit)");
2412 perf_evlist__strerror_mmap(evlist, errno, errbuf, sizeof(errbuf));
2416 perf_evlist__strerror_open(evlist, errno, errbuf, sizeof(errbuf));
2419 fprintf(trace->output, "%s\n", errbuf);
2420 goto out_delete_evlist;
2422 out_error_apply_filters:
2423 fprintf(trace->output,
2424 "Failed to set filter \"%s\" on event %s with %d (%s)\n",
2425 evsel->filter, perf_evsel__name(evsel), errno,
2426 str_error_r(errno, errbuf, sizeof(errbuf)));
2427 goto out_delete_evlist;
2430 fprintf(trace->output, "Not enough memory to run!\n");
2431 goto out_delete_evlist;
2434 fprintf(trace->output, "errno=%d,%s\n", errno, strerror(errno));
2435 goto out_delete_evlist;
2438 static int trace__replay(struct trace *trace)
2440 const struct perf_evsel_str_handler handlers[] = {
2441 { "probe:vfs_getname", trace__vfs_getname, },
2443 struct perf_data_file file = {
2445 .mode = PERF_DATA_MODE_READ,
2446 .force = trace->force,
2448 struct perf_session *session;
2449 struct perf_evsel *evsel;
2452 trace->tool.sample = trace__process_sample;
2453 trace->tool.mmap = perf_event__process_mmap;
2454 trace->tool.mmap2 = perf_event__process_mmap2;
2455 trace->tool.comm = perf_event__process_comm;
2456 trace->tool.exit = perf_event__process_exit;
2457 trace->tool.fork = perf_event__process_fork;
2458 trace->tool.attr = perf_event__process_attr;
2459 trace->tool.tracing_data = perf_event__process_tracing_data;
2460 trace->tool.build_id = perf_event__process_build_id;
2461 trace->tool.namespaces = perf_event__process_namespaces;
2463 trace->tool.ordered_events = true;
2464 trace->tool.ordering_requires_timestamps = true;
2466 /* add tid to output */
2467 trace->multiple_threads = true;
2469 session = perf_session__new(&file, false, &trace->tool);
2470 if (session == NULL)
2473 if (trace->opts.target.pid)
2474 symbol_conf.pid_list_str = strdup(trace->opts.target.pid);
2476 if (trace->opts.target.tid)
2477 symbol_conf.tid_list_str = strdup(trace->opts.target.tid);
2479 if (symbol__init(&session->header.env) < 0)
2482 trace->host = &session->machines.host;
2484 err = perf_session__set_tracepoints_handlers(session, handlers);
2488 evsel = perf_evlist__find_tracepoint_by_name(session->evlist,
2489 "raw_syscalls:sys_enter");
2490 /* older kernels have syscalls tp versus raw_syscalls */
2492 evsel = perf_evlist__find_tracepoint_by_name(session->evlist,
2493 "syscalls:sys_enter");
2496 (perf_evsel__init_syscall_tp(evsel, trace__sys_enter) < 0 ||
2497 perf_evsel__init_sc_tp_ptr_field(evsel, args))) {
2498 pr_err("Error during initialize raw_syscalls:sys_enter event\n");
2502 evsel = perf_evlist__find_tracepoint_by_name(session->evlist,
2503 "raw_syscalls:sys_exit");
2505 evsel = perf_evlist__find_tracepoint_by_name(session->evlist,
2506 "syscalls:sys_exit");
2508 (perf_evsel__init_syscall_tp(evsel, trace__sys_exit) < 0 ||
2509 perf_evsel__init_sc_tp_uint_field(evsel, ret))) {
2510 pr_err("Error during initialize raw_syscalls:sys_exit event\n");
2514 evlist__for_each_entry(session->evlist, evsel) {
2515 if (evsel->attr.type == PERF_TYPE_SOFTWARE &&
2516 (evsel->attr.config == PERF_COUNT_SW_PAGE_FAULTS_MAJ ||
2517 evsel->attr.config == PERF_COUNT_SW_PAGE_FAULTS_MIN ||
2518 evsel->attr.config == PERF_COUNT_SW_PAGE_FAULTS))
2519 evsel->handler = trace__pgfault;
2524 err = perf_session__process_events(session);
2526 pr_err("Failed to process events, error %d", err);
2528 else if (trace->summary)
2529 trace__fprintf_thread_summary(trace, trace->output);
2532 perf_session__delete(session);
2537 static size_t trace__fprintf_threads_header(FILE *fp)
2541 printed = fprintf(fp, "\n Summary of events:\n\n");
2546 DEFINE_RESORT_RB(syscall_stats, a->msecs > b->msecs,
2547 struct stats *stats;
2552 struct int_node *source = rb_entry(nd, struct int_node, rb_node);
2553 struct stats *stats = source->priv;
2555 entry->syscall = source->i;
2556 entry->stats = stats;
2557 entry->msecs = stats ? (u64)stats->n * (avg_stats(stats) / NSEC_PER_MSEC) : 0;
2560 static size_t thread__dump_stats(struct thread_trace *ttrace,
2561 struct trace *trace, FILE *fp)
2566 DECLARE_RESORT_RB_INTLIST(syscall_stats, ttrace->syscall_stats);
2568 if (syscall_stats == NULL)
2571 printed += fprintf(fp, "\n");
2573 printed += fprintf(fp, " syscall calls total min avg max stddev\n");
2574 printed += fprintf(fp, " (msec) (msec) (msec) (msec) (%%)\n");
2575 printed += fprintf(fp, " --------------- -------- --------- --------- --------- --------- ------\n");
2577 resort_rb__for_each_entry(nd, syscall_stats) {
2578 struct stats *stats = syscall_stats_entry->stats;
2580 double min = (double)(stats->min) / NSEC_PER_MSEC;
2581 double max = (double)(stats->max) / NSEC_PER_MSEC;
2582 double avg = avg_stats(stats);
2584 u64 n = (u64) stats->n;
2586 pct = avg ? 100.0 * stddev_stats(stats)/avg : 0.0;
2587 avg /= NSEC_PER_MSEC;
2589 sc = &trace->syscalls.table[syscall_stats_entry->syscall];
2590 printed += fprintf(fp, " %-15s", sc->name);
2591 printed += fprintf(fp, " %8" PRIu64 " %9.3f %9.3f %9.3f",
2592 n, syscall_stats_entry->msecs, min, avg);
2593 printed += fprintf(fp, " %9.3f %9.2f%%\n", max, pct);
2597 resort_rb__delete(syscall_stats);
2598 printed += fprintf(fp, "\n\n");
2603 static size_t trace__fprintf_thread(FILE *fp, struct thread *thread, struct trace *trace)
2606 struct thread_trace *ttrace = thread__priv(thread);
2612 ratio = (double)ttrace->nr_events / trace->nr_events * 100.0;
2614 printed += fprintf(fp, " %s (%d), ", thread__comm_str(thread), thread->tid);
2615 printed += fprintf(fp, "%lu events, ", ttrace->nr_events);
2616 printed += fprintf(fp, "%.1f%%", ratio);
2618 printed += fprintf(fp, ", %lu majfaults", ttrace->pfmaj);
2620 printed += fprintf(fp, ", %lu minfaults", ttrace->pfmin);
2622 printed += fprintf(fp, ", %.3f msec\n", ttrace->runtime_ms);
2623 else if (fputc('\n', fp) != EOF)
2626 printed += thread__dump_stats(ttrace, trace, fp);
2631 static unsigned long thread__nr_events(struct thread_trace *ttrace)
2633 return ttrace ? ttrace->nr_events : 0;
2636 DEFINE_RESORT_RB(threads, (thread__nr_events(a->thread->priv) < thread__nr_events(b->thread->priv)),
2637 struct thread *thread;
2640 entry->thread = rb_entry(nd, struct thread, rb_node);
2643 static size_t trace__fprintf_thread_summary(struct trace *trace, FILE *fp)
2645 DECLARE_RESORT_RB_MACHINE_THREADS(threads, trace->host);
2646 size_t printed = trace__fprintf_threads_header(fp);
2649 if (threads == NULL) {
2650 fprintf(fp, "%s", "Error sorting output by nr_events!\n");
2654 resort_rb__for_each_entry(nd, threads)
2655 printed += trace__fprintf_thread(fp, threads_entry->thread, trace);
2657 resort_rb__delete(threads);
2662 static int trace__set_duration(const struct option *opt, const char *str,
2663 int unset __maybe_unused)
2665 struct trace *trace = opt->value;
2667 trace->duration_filter = atof(str);
2671 static int trace__set_filter_pids(const struct option *opt, const char *str,
2672 int unset __maybe_unused)
2676 struct trace *trace = opt->value;
2678 * FIXME: introduce a intarray class, plain parse csv and create a
2679 * { int nr, int entries[] } struct...
2681 struct intlist *list = intlist__new(str);
2686 i = trace->filter_pids.nr = intlist__nr_entries(list) + 1;
2687 trace->filter_pids.entries = calloc(i, sizeof(pid_t));
2689 if (trace->filter_pids.entries == NULL)
2692 trace->filter_pids.entries[0] = getpid();
2694 for (i = 1; i < trace->filter_pids.nr; ++i)
2695 trace->filter_pids.entries[i] = intlist__entry(list, i - 1)->i;
2697 intlist__delete(list);
2703 static int trace__open_output(struct trace *trace, const char *filename)
2707 if (!stat(filename, &st) && st.st_size) {
2708 char oldname[PATH_MAX];
2710 scnprintf(oldname, sizeof(oldname), "%s.old", filename);
2712 rename(filename, oldname);
2715 trace->output = fopen(filename, "w");
2717 return trace->output == NULL ? -errno : 0;
2720 static int parse_pagefaults(const struct option *opt, const char *str,
2721 int unset __maybe_unused)
2723 int *trace_pgfaults = opt->value;
2725 if (strcmp(str, "all") == 0)
2726 *trace_pgfaults |= TRACE_PFMAJ | TRACE_PFMIN;
2727 else if (strcmp(str, "maj") == 0)
2728 *trace_pgfaults |= TRACE_PFMAJ;
2729 else if (strcmp(str, "min") == 0)
2730 *trace_pgfaults |= TRACE_PFMIN;
2737 static void evlist__set_evsel_handler(struct perf_evlist *evlist, void *handler)
2739 struct perf_evsel *evsel;
2741 evlist__for_each_entry(evlist, evsel)
2742 evsel->handler = handler;
2746 * XXX: Hackish, just splitting the combined -e+--event (syscalls
2747 * (raw_syscalls:{sys_{enter,exit}} + events (tracepoints, HW, SW, etc) to use
2748 * existing facilities unchanged (trace->ev_qualifier + parse_options()).
2750 * It'd be better to introduce a parse_options() variant that would return a
2751 * list with the terms it didn't match to an event...
2753 static int trace__parse_events_option(const struct option *opt, const char *str,
2754 int unset __maybe_unused)
2756 struct trace *trace = (struct trace *)opt->value;
2757 const char *s = str;
2758 char *sep = NULL, *lists[2] = { NULL, NULL, };
2759 int len = strlen(str), err = -1, list;
2760 char *strace_groups_dir = system_path(STRACE_GROUPS_DIR);
2761 char group_name[PATH_MAX];
2763 if (strace_groups_dir == NULL)
2768 trace->not_ev_qualifier = true;
2772 if ((sep = strchr(s, ',')) != NULL)
2776 if (syscalltbl__id(trace->sctbl, s) >= 0) {
2779 path__join(group_name, sizeof(group_name), strace_groups_dir, s);
2780 if (access(group_name, R_OK) == 0)
2785 sprintf(lists[list] + strlen(lists[list]), ",%s", s);
2787 lists[list] = malloc(len);
2788 if (lists[list] == NULL)
2790 strcpy(lists[list], s);
2800 if (lists[1] != NULL) {
2801 struct strlist_config slist_config = {
2802 .dirname = strace_groups_dir,
2805 trace->ev_qualifier = strlist__new(lists[1], &slist_config);
2806 if (trace->ev_qualifier == NULL) {
2807 fputs("Not enough memory to parse event qualifier", trace->output);
2811 if (trace__validate_ev_qualifier(trace))
2818 struct option o = OPT_CALLBACK('e', "event", &trace->evlist, "event",
2819 "event selector. use 'perf list' to list available events",
2820 parse_events_option);
2821 err = parse_events_option(&o, lists[0], 0);
2830 int cmd_trace(int argc, const char **argv)
2832 const char *trace_usage[] = {
2833 "perf trace [<options>] [<command>]",
2834 "perf trace [<options>] -- <command> [<options>]",
2835 "perf trace record [<options>] [<command>]",
2836 "perf trace record [<options>] -- <command> [<options>]",
2839 struct trace trace = {
2848 .user_freq = UINT_MAX,
2849 .user_interval = ULLONG_MAX,
2850 .no_buffering = true,
2851 .mmap_pages = UINT_MAX,
2852 .proc_map_timeout = 500,
2856 .trace_syscalls = true,
2857 .kernel_syscallchains = false,
2858 .max_stack = UINT_MAX,
2860 const char *output_name = NULL;
2861 const struct option trace_options[] = {
2862 OPT_CALLBACK('e', "event", &trace, "event",
2863 "event/syscall selector. use 'perf list' to list available events",
2864 trace__parse_events_option),
2865 OPT_BOOLEAN(0, "comm", &trace.show_comm,
2866 "show the thread COMM next to its id"),
2867 OPT_BOOLEAN(0, "tool_stats", &trace.show_tool_stats, "show tool stats"),
2868 OPT_CALLBACK(0, "expr", &trace, "expr", "list of syscalls/events to trace",
2869 trace__parse_events_option),
2870 OPT_STRING('o', "output", &output_name, "file", "output file name"),
2871 OPT_STRING('i', "input", &input_name, "file", "Analyze events in file"),
2872 OPT_STRING('p', "pid", &trace.opts.target.pid, "pid",
2873 "trace events on existing process id"),
2874 OPT_STRING('t', "tid", &trace.opts.target.tid, "tid",
2875 "trace events on existing thread id"),
2876 OPT_CALLBACK(0, "filter-pids", &trace, "CSV list of pids",
2877 "pids to filter (by the kernel)", trace__set_filter_pids),
2878 OPT_BOOLEAN('a', "all-cpus", &trace.opts.target.system_wide,
2879 "system-wide collection from all CPUs"),
2880 OPT_STRING('C', "cpu", &trace.opts.target.cpu_list, "cpu",
2881 "list of cpus to monitor"),
2882 OPT_BOOLEAN(0, "no-inherit", &trace.opts.no_inherit,
2883 "child tasks do not inherit counters"),
2884 OPT_CALLBACK('m', "mmap-pages", &trace.opts.mmap_pages, "pages",
2885 "number of mmap data pages",
2886 perf_evlist__parse_mmap_pages),
2887 OPT_STRING('u', "uid", &trace.opts.target.uid_str, "user",
2889 OPT_CALLBACK(0, "duration", &trace, "float",
2890 "show only events with duration > N.M ms",
2891 trace__set_duration),
2892 OPT_BOOLEAN(0, "sched", &trace.sched, "show blocking scheduler events"),
2893 OPT_INCR('v', "verbose", &verbose, "be more verbose"),
2894 OPT_BOOLEAN('T', "time", &trace.full_time,
2895 "Show full timestamp, not time relative to first start"),
2896 OPT_BOOLEAN('s', "summary", &trace.summary_only,
2897 "Show only syscall summary with statistics"),
2898 OPT_BOOLEAN('S', "with-summary", &trace.summary,
2899 "Show all syscalls and summary with statistics"),
2900 OPT_CALLBACK_DEFAULT('F', "pf", &trace.trace_pgfaults, "all|maj|min",
2901 "Trace pagefaults", parse_pagefaults, "maj"),
2902 OPT_BOOLEAN(0, "syscalls", &trace.trace_syscalls, "Trace syscalls"),
2903 OPT_BOOLEAN('f', "force", &trace.force, "don't complain, do it"),
2904 OPT_CALLBACK(0, "call-graph", &trace.opts,
2905 "record_mode[,record_size]", record_callchain_help,
2906 &record_parse_callchain_opt),
2907 OPT_BOOLEAN(0, "kernel-syscall-graph", &trace.kernel_syscallchains,
2908 "Show the kernel callchains on the syscall exit path"),
2909 OPT_UINTEGER(0, "min-stack", &trace.min_stack,
2910 "Set the minimum stack depth when parsing the callchain, "
2911 "anything below the specified depth will be ignored."),
2912 OPT_UINTEGER(0, "max-stack", &trace.max_stack,
2913 "Set the maximum stack depth when parsing the callchain, "
2914 "anything beyond the specified depth will be ignored. "
2915 "Default: kernel.perf_event_max_stack or " __stringify(PERF_MAX_STACK_DEPTH)),
2916 OPT_UINTEGER(0, "proc-map-timeout", &trace.opts.proc_map_timeout,
2917 "per thread proc mmap processing timeout in ms"),
2918 OPT_UINTEGER('D', "delay", &trace.opts.initial_delay,
2919 "ms to wait before starting measurement after program "
2923 bool __maybe_unused max_stack_user_set = true;
2924 bool mmap_pages_user_set = true;
2925 const char * const trace_subcommands[] = { "record", NULL };
2929 signal(SIGSEGV, sighandler_dump_stack);
2930 signal(SIGFPE, sighandler_dump_stack);
2932 trace.evlist = perf_evlist__new();
2933 trace.sctbl = syscalltbl__new();
2935 if (trace.evlist == NULL || trace.sctbl == NULL) {
2936 pr_err("Not enough memory to run!\n");
2941 argc = parse_options_subcommand(argc, argv, trace_options, trace_subcommands,
2942 trace_usage, PARSE_OPT_STOP_AT_NON_OPTION);
2944 err = bpf__setup_stdout(trace.evlist);
2946 bpf__strerror_setup_stdout(trace.evlist, err, bf, sizeof(bf));
2947 pr_err("ERROR: Setup BPF stdout failed: %s\n", bf);
2953 if (trace.trace_pgfaults) {
2954 trace.opts.sample_address = true;
2955 trace.opts.sample_time = true;
2958 if (trace.opts.mmap_pages == UINT_MAX)
2959 mmap_pages_user_set = false;
2961 if (trace.max_stack == UINT_MAX) {
2962 trace.max_stack = input_name ? PERF_MAX_STACK_DEPTH : sysctl_perf_event_max_stack;
2963 max_stack_user_set = false;
2966 #ifdef HAVE_DWARF_UNWIND_SUPPORT
2967 if ((trace.min_stack || max_stack_user_set) && !callchain_param.enabled && trace.trace_syscalls)
2968 record_opts__parse_callchain(&trace.opts, &callchain_param, "dwarf", false);
2971 if (callchain_param.enabled) {
2972 if (!mmap_pages_user_set && geteuid() == 0)
2973 trace.opts.mmap_pages = perf_event_mlock_kb_in_pages() * 4;
2975 symbol_conf.use_callchain = true;
2978 if (trace.evlist->nr_entries > 0)
2979 evlist__set_evsel_handler(trace.evlist, trace__event_handler);
2981 if ((argc >= 1) && (strcmp(argv[0], "record") == 0))
2982 return trace__record(&trace, argc-1, &argv[1]);
2984 /* summary_only implies summary option, but don't overwrite summary if set */
2985 if (trace.summary_only)
2986 trace.summary = trace.summary_only;
2988 if (!trace.trace_syscalls && !trace.trace_pgfaults &&
2989 trace.evlist->nr_entries == 0 /* Was --events used? */) {
2990 pr_err("Please specify something to trace.\n");
2994 if (!trace.trace_syscalls && trace.ev_qualifier) {
2995 pr_err("The -e option can't be used with --no-syscalls.\n");
2999 if (output_name != NULL) {
3000 err = trace__open_output(&trace, output_name);
3002 perror("failed to create output file");
3007 trace.open_id = syscalltbl__id(trace.sctbl, "open");
3009 err = target__validate(&trace.opts.target);
3011 target__strerror(&trace.opts.target, err, bf, sizeof(bf));
3012 fprintf(trace.output, "%s", bf);
3016 err = target__parse_uid(&trace.opts.target);
3018 target__strerror(&trace.opts.target, err, bf, sizeof(bf));
3019 fprintf(trace.output, "%s", bf);
3023 if (!argc && target__none(&trace.opts.target))
3024 trace.opts.target.system_wide = true;
3027 err = trace__replay(&trace);
3029 err = trace__run(&trace, argc, argv);
3032 if (output_name != NULL)
3033 fclose(trace.output);