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/cgroup.h"
23 #include "util/color.h"
24 #include "util/debug.h"
26 #include "util/event.h"
27 #include "util/evlist.h"
28 #include <subcmd/exec-cmd.h>
29 #include "util/machine.h"
30 #include "util/path.h"
31 #include "util/session.h"
32 #include "util/thread.h"
33 #include <subcmd/parse-options.h>
34 #include "util/strlist.h"
35 #include "util/intlist.h"
36 #include "util/thread_map.h"
37 #include "util/stat.h"
38 #include "trace/beauty/beauty.h"
39 #include "trace-event.h"
40 #include "util/parse-events.h"
41 #include "util/bpf-loader.h"
42 #include "callchain.h"
43 #include "print_binary.h"
45 #include "syscalltbl.h"
46 #include "rb_resort.h"
54 #include <linux/err.h>
55 #include <linux/filter.h>
56 #include <linux/kernel.h>
57 #include <linux/random.h>
58 #include <linux/stringify.h>
59 #include <linux/time64.h>
62 #include "sane_ctype.h"
65 # define O_CLOEXEC 02000000
68 #ifndef F_LINUX_SPECIFIC_BASE
69 # define F_LINUX_SPECIFIC_BASE 1024
73 struct perf_tool tool;
74 struct syscalltbl *sctbl;
77 struct syscall *table;
79 struct perf_evsel *sys_enter,
84 struct record_opts opts;
85 struct perf_evlist *evlist;
87 struct thread *current;
88 struct cgroup *cgroup;
91 unsigned long nr_events;
92 unsigned long nr_events_printed;
93 unsigned long max_events;
94 struct strlist *ev_qualifier;
103 double duration_filter;
109 unsigned int max_stack;
110 unsigned int min_stack;
111 bool raw_augmented_syscalls;
112 bool not_ev_qualifier;
116 bool multiple_threads;
122 bool show_tool_stats;
124 bool kernel_syscallchains;
133 u64 (*integer)(struct tp_field *field, struct perf_sample *sample);
134 void *(*pointer)(struct tp_field *field, struct perf_sample *sample);
138 #define TP_UINT_FIELD(bits) \
139 static u64 tp_field__u##bits(struct tp_field *field, struct perf_sample *sample) \
142 memcpy(&value, sample->raw_data + field->offset, sizeof(value)); \
151 #define TP_UINT_FIELD__SWAPPED(bits) \
152 static u64 tp_field__swapped_u##bits(struct tp_field *field, struct perf_sample *sample) \
155 memcpy(&value, sample->raw_data + field->offset, sizeof(value)); \
156 return bswap_##bits(value);\
159 TP_UINT_FIELD__SWAPPED(16);
160 TP_UINT_FIELD__SWAPPED(32);
161 TP_UINT_FIELD__SWAPPED(64);
163 static int __tp_field__init_uint(struct tp_field *field, int size, int offset, bool needs_swap)
165 field->offset = offset;
169 field->integer = tp_field__u8;
172 field->integer = needs_swap ? tp_field__swapped_u16 : tp_field__u16;
175 field->integer = needs_swap ? tp_field__swapped_u32 : tp_field__u32;
178 field->integer = needs_swap ? tp_field__swapped_u64 : tp_field__u64;
187 static int tp_field__init_uint(struct tp_field *field, struct tep_format_field *format_field, bool needs_swap)
189 return __tp_field__init_uint(field, format_field->size, format_field->offset, needs_swap);
192 static void *tp_field__ptr(struct tp_field *field, struct perf_sample *sample)
194 return sample->raw_data + field->offset;
197 static int __tp_field__init_ptr(struct tp_field *field, int offset)
199 field->offset = offset;
200 field->pointer = tp_field__ptr;
204 static int tp_field__init_ptr(struct tp_field *field, struct tep_format_field *format_field)
206 return __tp_field__init_ptr(field, format_field->offset);
212 struct tp_field args, ret;
216 static int perf_evsel__init_tp_uint_field(struct perf_evsel *evsel,
217 struct tp_field *field,
220 struct tep_format_field *format_field = perf_evsel__field(evsel, name);
222 if (format_field == NULL)
225 return tp_field__init_uint(field, format_field, evsel->needs_swap);
228 #define perf_evsel__init_sc_tp_uint_field(evsel, name) \
229 ({ struct syscall_tp *sc = evsel->priv;\
230 perf_evsel__init_tp_uint_field(evsel, &sc->name, #name); })
232 static int perf_evsel__init_tp_ptr_field(struct perf_evsel *evsel,
233 struct tp_field *field,
236 struct tep_format_field *format_field = perf_evsel__field(evsel, name);
238 if (format_field == NULL)
241 return tp_field__init_ptr(field, format_field);
244 #define perf_evsel__init_sc_tp_ptr_field(evsel, name) \
245 ({ struct syscall_tp *sc = evsel->priv;\
246 perf_evsel__init_tp_ptr_field(evsel, &sc->name, #name); })
248 static void perf_evsel__delete_priv(struct perf_evsel *evsel)
251 perf_evsel__delete(evsel);
254 static int perf_evsel__init_syscall_tp(struct perf_evsel *evsel)
256 struct syscall_tp *sc = evsel->priv = malloc(sizeof(struct syscall_tp));
258 if (evsel->priv != NULL) {
259 if (perf_evsel__init_tp_uint_field(evsel, &sc->id, "__syscall_nr"))
270 static int perf_evsel__init_augmented_syscall_tp(struct perf_evsel *evsel)
272 struct syscall_tp *sc = evsel->priv = malloc(sizeof(struct syscall_tp));
274 if (evsel->priv != NULL) { /* field, sizeof_field, offsetof_field */
275 if (__tp_field__init_uint(&sc->id, sizeof(long), sizeof(long long), evsel->needs_swap))
287 static int perf_evsel__init_augmented_syscall_tp_args(struct perf_evsel *evsel)
289 struct syscall_tp *sc = evsel->priv;
291 return __tp_field__init_ptr(&sc->args, sc->id.offset + sizeof(u64));
294 static int perf_evsel__init_augmented_syscall_tp_ret(struct perf_evsel *evsel)
296 struct syscall_tp *sc = evsel->priv;
298 return __tp_field__init_uint(&sc->ret, sizeof(u64), sc->id.offset + sizeof(u64), evsel->needs_swap);
301 static int perf_evsel__init_raw_syscall_tp(struct perf_evsel *evsel, void *handler)
303 evsel->priv = malloc(sizeof(struct syscall_tp));
304 if (evsel->priv != NULL) {
305 if (perf_evsel__init_sc_tp_uint_field(evsel, id))
308 evsel->handler = handler;
319 static struct perf_evsel *perf_evsel__raw_syscall_newtp(const char *direction, void *handler)
321 struct perf_evsel *evsel = perf_evsel__newtp("raw_syscalls", direction);
323 /* older kernel (e.g., RHEL6) use syscalls:{enter,exit} */
325 evsel = perf_evsel__newtp("syscalls", direction);
330 if (perf_evsel__init_raw_syscall_tp(evsel, handler))
336 perf_evsel__delete_priv(evsel);
340 #define perf_evsel__sc_tp_uint(evsel, name, sample) \
341 ({ struct syscall_tp *fields = evsel->priv; \
342 fields->name.integer(&fields->name, sample); })
344 #define perf_evsel__sc_tp_ptr(evsel, name, sample) \
345 ({ struct syscall_tp *fields = evsel->priv; \
346 fields->name.pointer(&fields->name, sample); })
348 size_t strarray__scnprintf(struct strarray *sa, char *bf, size_t size, const char *intfmt, int val)
350 int idx = val - sa->offset;
352 if (idx < 0 || idx >= sa->nr_entries || sa->entries[idx] == NULL)
353 return scnprintf(bf, size, intfmt, val);
355 return scnprintf(bf, size, "%s", sa->entries[idx]);
358 static size_t __syscall_arg__scnprintf_strarray(char *bf, size_t size,
360 struct syscall_arg *arg)
362 return strarray__scnprintf(arg->parm, bf, size, intfmt, arg->val);
365 static size_t syscall_arg__scnprintf_strarray(char *bf, size_t size,
366 struct syscall_arg *arg)
368 return __syscall_arg__scnprintf_strarray(bf, size, "%d", arg);
371 #define SCA_STRARRAY syscall_arg__scnprintf_strarray
375 struct strarray **entries;
378 #define DEFINE_STRARRAYS(array) struct strarrays strarrays__##array = { \
379 .nr_entries = ARRAY_SIZE(array), \
383 size_t syscall_arg__scnprintf_strarrays(char *bf, size_t size,
384 struct syscall_arg *arg)
386 struct strarrays *sas = arg->parm;
389 for (i = 0; i < sas->nr_entries; ++i) {
390 struct strarray *sa = sas->entries[i];
391 int idx = arg->val - sa->offset;
393 if (idx >= 0 && idx < sa->nr_entries) {
394 if (sa->entries[idx] == NULL)
396 return scnprintf(bf, size, "%s", sa->entries[idx]);
400 return scnprintf(bf, size, "%d", arg->val);
404 #define AT_FDCWD -100
407 static size_t syscall_arg__scnprintf_fd_at(char *bf, size_t size,
408 struct syscall_arg *arg)
413 return scnprintf(bf, size, "CWD");
415 return syscall_arg__scnprintf_fd(bf, size, arg);
418 #define SCA_FDAT syscall_arg__scnprintf_fd_at
420 static size_t syscall_arg__scnprintf_close_fd(char *bf, size_t size,
421 struct syscall_arg *arg);
423 #define SCA_CLOSE_FD syscall_arg__scnprintf_close_fd
425 size_t syscall_arg__scnprintf_hex(char *bf, size_t size, struct syscall_arg *arg)
427 return scnprintf(bf, size, "%#lx", arg->val);
430 size_t syscall_arg__scnprintf_int(char *bf, size_t size, struct syscall_arg *arg)
432 return scnprintf(bf, size, "%d", arg->val);
435 size_t syscall_arg__scnprintf_long(char *bf, size_t size, struct syscall_arg *arg)
437 return scnprintf(bf, size, "%ld", arg->val);
440 static const char *bpf_cmd[] = {
441 "MAP_CREATE", "MAP_LOOKUP_ELEM", "MAP_UPDATE_ELEM", "MAP_DELETE_ELEM",
442 "MAP_GET_NEXT_KEY", "PROG_LOAD",
444 static DEFINE_STRARRAY(bpf_cmd);
446 static const char *epoll_ctl_ops[] = { "ADD", "DEL", "MOD", };
447 static DEFINE_STRARRAY_OFFSET(epoll_ctl_ops, 1);
449 static const char *itimers[] = { "REAL", "VIRTUAL", "PROF", };
450 static DEFINE_STRARRAY(itimers);
452 static const char *keyctl_options[] = {
453 "GET_KEYRING_ID", "JOIN_SESSION_KEYRING", "UPDATE", "REVOKE", "CHOWN",
454 "SETPERM", "DESCRIBE", "CLEAR", "LINK", "UNLINK", "SEARCH", "READ",
455 "INSTANTIATE", "NEGATE", "SET_REQKEY_KEYRING", "SET_TIMEOUT",
456 "ASSUME_AUTHORITY", "GET_SECURITY", "SESSION_TO_PARENT", "REJECT",
457 "INSTANTIATE_IOV", "INVALIDATE", "GET_PERSISTENT",
459 static DEFINE_STRARRAY(keyctl_options);
461 static const char *whences[] = { "SET", "CUR", "END",
469 static DEFINE_STRARRAY(whences);
471 static const char *fcntl_cmds[] = {
472 "DUPFD", "GETFD", "SETFD", "GETFL", "SETFL", "GETLK", "SETLK",
473 "SETLKW", "SETOWN", "GETOWN", "SETSIG", "GETSIG", "GETLK64",
474 "SETLK64", "SETLKW64", "SETOWN_EX", "GETOWN_EX",
477 static DEFINE_STRARRAY(fcntl_cmds);
479 static const char *fcntl_linux_specific_cmds[] = {
480 "SETLEASE", "GETLEASE", "NOTIFY", [5] = "CANCELLK", "DUPFD_CLOEXEC",
481 "SETPIPE_SZ", "GETPIPE_SZ", "ADD_SEALS", "GET_SEALS",
482 "GET_RW_HINT", "SET_RW_HINT", "GET_FILE_RW_HINT", "SET_FILE_RW_HINT",
485 static DEFINE_STRARRAY_OFFSET(fcntl_linux_specific_cmds, F_LINUX_SPECIFIC_BASE);
487 static struct strarray *fcntl_cmds_arrays[] = {
488 &strarray__fcntl_cmds,
489 &strarray__fcntl_linux_specific_cmds,
492 static DEFINE_STRARRAYS(fcntl_cmds_arrays);
494 static const char *rlimit_resources[] = {
495 "CPU", "FSIZE", "DATA", "STACK", "CORE", "RSS", "NPROC", "NOFILE",
496 "MEMLOCK", "AS", "LOCKS", "SIGPENDING", "MSGQUEUE", "NICE", "RTPRIO",
499 static DEFINE_STRARRAY(rlimit_resources);
501 static const char *sighow[] = { "BLOCK", "UNBLOCK", "SETMASK", };
502 static DEFINE_STRARRAY(sighow);
504 static const char *clockid[] = {
505 "REALTIME", "MONOTONIC", "PROCESS_CPUTIME_ID", "THREAD_CPUTIME_ID",
506 "MONOTONIC_RAW", "REALTIME_COARSE", "MONOTONIC_COARSE", "BOOTTIME",
507 "REALTIME_ALARM", "BOOTTIME_ALARM", "SGI_CYCLE", "TAI"
509 static DEFINE_STRARRAY(clockid);
511 static size_t syscall_arg__scnprintf_access_mode(char *bf, size_t size,
512 struct syscall_arg *arg)
517 if (mode == F_OK) /* 0 */
518 return scnprintf(bf, size, "F");
520 if (mode & n##_OK) { \
521 printed += scnprintf(bf + printed, size - printed, "%s", #n); \
531 printed += scnprintf(bf + printed, size - printed, "|%#x", mode);
536 #define SCA_ACCMODE syscall_arg__scnprintf_access_mode
538 static size_t syscall_arg__scnprintf_filename(char *bf, size_t size,
539 struct syscall_arg *arg);
541 #define SCA_FILENAME syscall_arg__scnprintf_filename
543 static size_t syscall_arg__scnprintf_pipe_flags(char *bf, size_t size,
544 struct syscall_arg *arg)
546 int printed = 0, flags = arg->val;
549 if (flags & O_##n) { \
550 printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \
559 printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags);
564 #define SCA_PIPE_FLAGS syscall_arg__scnprintf_pipe_flags
566 #ifndef GRND_NONBLOCK
567 #define GRND_NONBLOCK 0x0001
570 #define GRND_RANDOM 0x0002
573 static size_t syscall_arg__scnprintf_getrandom_flags(char *bf, size_t size,
574 struct syscall_arg *arg)
576 int printed = 0, flags = arg->val;
579 if (flags & GRND_##n) { \
580 printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \
581 flags &= ~GRND_##n; \
589 printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags);
594 #define SCA_GETRANDOM_FLAGS syscall_arg__scnprintf_getrandom_flags
596 #define STRARRAY(name, array) \
597 { .scnprintf = SCA_STRARRAY, \
598 .parm = &strarray__##array, }
600 #include "trace/beauty/arch_errno_names.c"
601 #include "trace/beauty/eventfd.c"
602 #include "trace/beauty/futex_op.c"
603 #include "trace/beauty/futex_val3.c"
604 #include "trace/beauty/mmap.c"
605 #include "trace/beauty/mode_t.c"
606 #include "trace/beauty/msg_flags.c"
607 #include "trace/beauty/open_flags.c"
608 #include "trace/beauty/perf_event_open.c"
609 #include "trace/beauty/pid.c"
610 #include "trace/beauty/sched_policy.c"
611 #include "trace/beauty/seccomp.c"
612 #include "trace/beauty/signum.c"
613 #include "trace/beauty/socket_type.c"
614 #include "trace/beauty/waitid_options.c"
616 struct syscall_arg_fmt {
617 size_t (*scnprintf)(char *bf, size_t size, struct syscall_arg *arg);
618 unsigned long (*mask_val)(struct syscall_arg *arg, unsigned long val);
624 static struct syscall_fmt {
627 struct syscall_arg_fmt arg[6];
634 .arg = { [1] = { .scnprintf = SCA_ACCMODE, /* mode */ }, }, },
636 .arg = { [1] = { .scnprintf = SCA_SOCKADDR, /* umyaddr */ }, }, },
638 .arg = { [0] = STRARRAY(cmd, bpf_cmd), }, },
639 { .name = "brk", .hexret = true,
640 .arg = { [0] = { .scnprintf = SCA_HEX, /* brk */ }, }, },
641 { .name = "clock_gettime",
642 .arg = { [0] = STRARRAY(clk_id, clockid), }, },
643 { .name = "clone", .errpid = true, .nr_args = 5,
644 .arg = { [0] = { .name = "flags", .scnprintf = SCA_CLONE_FLAGS, },
645 [1] = { .name = "child_stack", .scnprintf = SCA_HEX, },
646 [2] = { .name = "parent_tidptr", .scnprintf = SCA_HEX, },
647 [3] = { .name = "child_tidptr", .scnprintf = SCA_HEX, },
648 [4] = { .name = "tls", .scnprintf = SCA_HEX, }, }, },
650 .arg = { [0] = { .scnprintf = SCA_CLOSE_FD, /* fd */ }, }, },
652 .arg = { [1] = { .scnprintf = SCA_SOCKADDR, /* servaddr */ }, }, },
653 { .name = "epoll_ctl",
654 .arg = { [1] = STRARRAY(op, epoll_ctl_ops), }, },
655 { .name = "eventfd2",
656 .arg = { [1] = { .scnprintf = SCA_EFD_FLAGS, /* flags */ }, }, },
657 { .name = "fchmodat",
658 .arg = { [0] = { .scnprintf = SCA_FDAT, /* fd */ }, }, },
659 { .name = "fchownat",
660 .arg = { [0] = { .scnprintf = SCA_FDAT, /* fd */ }, }, },
662 .arg = { [1] = { .scnprintf = SCA_FCNTL_CMD, /* cmd */
663 .parm = &strarrays__fcntl_cmds_arrays,
664 .show_zero = true, },
665 [2] = { .scnprintf = SCA_FCNTL_ARG, /* arg */ }, }, },
667 .arg = { [1] = { .scnprintf = SCA_FLOCK, /* cmd */ }, }, },
668 { .name = "fstat", .alias = "newfstat", },
669 { .name = "fstatat", .alias = "newfstatat", },
671 .arg = { [1] = { .scnprintf = SCA_FUTEX_OP, /* op */ },
672 [5] = { .scnprintf = SCA_FUTEX_VAL3, /* val3 */ }, }, },
673 { .name = "futimesat",
674 .arg = { [0] = { .scnprintf = SCA_FDAT, /* fd */ }, }, },
675 { .name = "getitimer",
676 .arg = { [0] = STRARRAY(which, itimers), }, },
677 { .name = "getpid", .errpid = true, },
678 { .name = "getpgid", .errpid = true, },
679 { .name = "getppid", .errpid = true, },
680 { .name = "getrandom",
681 .arg = { [2] = { .scnprintf = SCA_GETRANDOM_FLAGS, /* flags */ }, }, },
682 { .name = "getrlimit",
683 .arg = { [0] = STRARRAY(resource, rlimit_resources), }, },
684 { .name = "gettid", .errpid = true, },
687 #if defined(__i386__) || defined(__x86_64__)
689 * FIXME: Make this available to all arches.
691 [1] = { .scnprintf = SCA_IOCTL_CMD, /* cmd */ },
692 [2] = { .scnprintf = SCA_HEX, /* arg */ }, }, },
694 [2] = { .scnprintf = SCA_HEX, /* arg */ }, }, },
696 { .name = "kcmp", .nr_args = 5,
697 .arg = { [0] = { .name = "pid1", .scnprintf = SCA_PID, },
698 [1] = { .name = "pid2", .scnprintf = SCA_PID, },
699 [2] = { .name = "type", .scnprintf = SCA_KCMP_TYPE, },
700 [3] = { .name = "idx1", .scnprintf = SCA_KCMP_IDX, },
701 [4] = { .name = "idx2", .scnprintf = SCA_KCMP_IDX, }, }, },
703 .arg = { [0] = STRARRAY(option, keyctl_options), }, },
705 .arg = { [1] = { .scnprintf = SCA_SIGNUM, /* sig */ }, }, },
707 .arg = { [0] = { .scnprintf = SCA_FDAT, /* fd */ }, }, },
709 .arg = { [2] = STRARRAY(whence, whences), }, },
710 { .name = "lstat", .alias = "newlstat", },
712 .arg = { [0] = { .scnprintf = SCA_HEX, /* start */ },
713 [2] = { .scnprintf = SCA_MADV_BHV, /* behavior */ }, }, },
715 .arg = { [0] = { .scnprintf = SCA_FDAT, /* fd */ }, }, },
717 .arg = { [0] = { .scnprintf = SCA_FDAT, /* fd */ }, }, },
719 .arg = { [0] = { .scnprintf = SCA_HEX, /* addr */ }, }, },
720 { .name = "mlockall",
721 .arg = { [0] = { .scnprintf = SCA_HEX, /* addr */ }, }, },
722 { .name = "mmap", .hexret = true,
723 /* The standard mmap maps to old_mmap on s390x */
724 #if defined(__s390x__)
727 .arg = { [0] = { .scnprintf = SCA_HEX, /* addr */ },
728 [2] = { .scnprintf = SCA_MMAP_PROT, /* prot */ },
729 [3] = { .scnprintf = SCA_MMAP_FLAGS, /* flags */ }, }, },
731 .arg = { [0] = { .scnprintf = SCA_FILENAME, /* dev_name */ },
732 [3] = { .scnprintf = SCA_MOUNT_FLAGS, /* flags */
733 .mask_val = SCAMV_MOUNT_FLAGS, /* flags */ }, }, },
734 { .name = "mprotect",
735 .arg = { [0] = { .scnprintf = SCA_HEX, /* start */ },
736 [2] = { .scnprintf = SCA_MMAP_PROT, /* prot */ }, }, },
737 { .name = "mq_unlink",
738 .arg = { [0] = { .scnprintf = SCA_FILENAME, /* u_name */ }, }, },
739 { .name = "mremap", .hexret = true,
740 .arg = { [0] = { .scnprintf = SCA_HEX, /* addr */ },
741 [3] = { .scnprintf = SCA_MREMAP_FLAGS, /* flags */ },
742 [4] = { .scnprintf = SCA_HEX, /* new_addr */ }, }, },
744 .arg = { [0] = { .scnprintf = SCA_HEX, /* addr */ }, }, },
746 .arg = { [0] = { .scnprintf = SCA_HEX, /* addr */ }, }, },
747 { .name = "name_to_handle_at",
748 .arg = { [0] = { .scnprintf = SCA_FDAT, /* dfd */ }, }, },
749 { .name = "newfstatat",
750 .arg = { [0] = { .scnprintf = SCA_FDAT, /* dfd */ }, }, },
752 .arg = { [1] = { .scnprintf = SCA_OPEN_FLAGS, /* flags */ }, }, },
753 { .name = "open_by_handle_at",
754 .arg = { [0] = { .scnprintf = SCA_FDAT, /* dfd */ },
755 [2] = { .scnprintf = SCA_OPEN_FLAGS, /* flags */ }, }, },
757 .arg = { [0] = { .scnprintf = SCA_FDAT, /* dfd */ },
758 [2] = { .scnprintf = SCA_OPEN_FLAGS, /* flags */ }, }, },
759 { .name = "perf_event_open",
760 .arg = { [2] = { .scnprintf = SCA_INT, /* cpu */ },
761 [3] = { .scnprintf = SCA_FD, /* group_fd */ },
762 [4] = { .scnprintf = SCA_PERF_FLAGS, /* flags */ }, }, },
764 .arg = { [1] = { .scnprintf = SCA_PIPE_FLAGS, /* flags */ }, }, },
765 { .name = "pkey_alloc",
766 .arg = { [1] = { .scnprintf = SCA_PKEY_ALLOC_ACCESS_RIGHTS, /* access_rights */ }, }, },
767 { .name = "pkey_free",
768 .arg = { [0] = { .scnprintf = SCA_INT, /* key */ }, }, },
769 { .name = "pkey_mprotect",
770 .arg = { [0] = { .scnprintf = SCA_HEX, /* start */ },
771 [2] = { .scnprintf = SCA_MMAP_PROT, /* prot */ },
772 [3] = { .scnprintf = SCA_INT, /* pkey */ }, }, },
773 { .name = "poll", .timeout = true, },
774 { .name = "ppoll", .timeout = true, },
775 { .name = "prctl", .alias = "arch_prctl",
776 .arg = { [0] = { .scnprintf = SCA_PRCTL_OPTION, /* option */ },
777 [1] = { .scnprintf = SCA_PRCTL_ARG2, /* arg2 */ },
778 [2] = { .scnprintf = SCA_PRCTL_ARG3, /* arg3 */ }, }, },
779 { .name = "pread", .alias = "pread64", },
780 { .name = "preadv", .alias = "pread", },
781 { .name = "prlimit64",
782 .arg = { [1] = STRARRAY(resource, rlimit_resources), }, },
783 { .name = "pwrite", .alias = "pwrite64", },
784 { .name = "readlinkat",
785 .arg = { [0] = { .scnprintf = SCA_FDAT, /* dfd */ }, }, },
786 { .name = "recvfrom",
787 .arg = { [3] = { .scnprintf = SCA_MSG_FLAGS, /* flags */ }, }, },
788 { .name = "recvmmsg",
789 .arg = { [3] = { .scnprintf = SCA_MSG_FLAGS, /* flags */ }, }, },
791 .arg = { [2] = { .scnprintf = SCA_MSG_FLAGS, /* flags */ }, }, },
792 { .name = "renameat",
793 .arg = { [0] = { .scnprintf = SCA_FDAT, /* dfd */ }, }, },
794 { .name = "rt_sigaction",
795 .arg = { [0] = { .scnprintf = SCA_SIGNUM, /* sig */ }, }, },
796 { .name = "rt_sigprocmask",
797 .arg = { [0] = STRARRAY(how, sighow), }, },
798 { .name = "rt_sigqueueinfo",
799 .arg = { [1] = { .scnprintf = SCA_SIGNUM, /* sig */ }, }, },
800 { .name = "rt_tgsigqueueinfo",
801 .arg = { [2] = { .scnprintf = SCA_SIGNUM, /* sig */ }, }, },
802 { .name = "sched_setscheduler",
803 .arg = { [1] = { .scnprintf = SCA_SCHED_POLICY, /* policy */ }, }, },
805 .arg = { [0] = { .scnprintf = SCA_SECCOMP_OP, /* op */ },
806 [1] = { .scnprintf = SCA_SECCOMP_FLAGS, /* flags */ }, }, },
807 { .name = "select", .timeout = true, },
808 { .name = "sendmmsg",
809 .arg = { [3] = { .scnprintf = SCA_MSG_FLAGS, /* flags */ }, }, },
811 .arg = { [2] = { .scnprintf = SCA_MSG_FLAGS, /* flags */ }, }, },
813 .arg = { [3] = { .scnprintf = SCA_MSG_FLAGS, /* flags */ },
814 [4] = { .scnprintf = SCA_SOCKADDR, /* addr */ }, }, },
815 { .name = "set_tid_address", .errpid = true, },
816 { .name = "setitimer",
817 .arg = { [0] = STRARRAY(which, itimers), }, },
818 { .name = "setrlimit",
819 .arg = { [0] = STRARRAY(resource, rlimit_resources), }, },
821 .arg = { [0] = STRARRAY(family, socket_families),
822 [1] = { .scnprintf = SCA_SK_TYPE, /* type */ },
823 [2] = { .scnprintf = SCA_SK_PROTO, /* protocol */ }, }, },
824 { .name = "socketpair",
825 .arg = { [0] = STRARRAY(family, socket_families),
826 [1] = { .scnprintf = SCA_SK_TYPE, /* type */ },
827 [2] = { .scnprintf = SCA_SK_PROTO, /* protocol */ }, }, },
828 { .name = "stat", .alias = "newstat", },
830 .arg = { [0] = { .scnprintf = SCA_FDAT, /* fdat */ },
831 [2] = { .scnprintf = SCA_STATX_FLAGS, /* flags */ } ,
832 [3] = { .scnprintf = SCA_STATX_MASK, /* mask */ }, }, },
834 .arg = { [0] = { .scnprintf = SCA_FILENAME, /* specialfile */ }, }, },
836 .arg = { [0] = { .scnprintf = SCA_FILENAME, /* specialfile */ }, }, },
837 { .name = "symlinkat",
838 .arg = { [0] = { .scnprintf = SCA_FDAT, /* dfd */ }, }, },
840 .arg = { [2] = { .scnprintf = SCA_SIGNUM, /* sig */ }, }, },
842 .arg = { [1] = { .scnprintf = SCA_SIGNUM, /* sig */ }, }, },
843 { .name = "umount2", .alias = "umount",
844 .arg = { [0] = { .scnprintf = SCA_FILENAME, /* name */ }, }, },
845 { .name = "uname", .alias = "newuname", },
846 { .name = "unlinkat",
847 .arg = { [0] = { .scnprintf = SCA_FDAT, /* dfd */ }, }, },
848 { .name = "utimensat",
849 .arg = { [0] = { .scnprintf = SCA_FDAT, /* dirfd */ }, }, },
850 { .name = "wait4", .errpid = true,
851 .arg = { [2] = { .scnprintf = SCA_WAITID_OPTIONS, /* options */ }, }, },
852 { .name = "waitid", .errpid = true,
853 .arg = { [3] = { .scnprintf = SCA_WAITID_OPTIONS, /* options */ }, }, },
856 static int syscall_fmt__cmp(const void *name, const void *fmtp)
858 const struct syscall_fmt *fmt = fmtp;
859 return strcmp(name, fmt->name);
862 static struct syscall_fmt *syscall_fmt__find(const char *name)
864 const int nmemb = ARRAY_SIZE(syscall_fmts);
865 return bsearch(name, syscall_fmts, nmemb, sizeof(struct syscall_fmt), syscall_fmt__cmp);
868 static struct syscall_fmt *syscall_fmt__find_by_alias(const char *alias)
870 int i, nmemb = ARRAY_SIZE(syscall_fmts);
872 for (i = 0; i < nmemb; ++i) {
873 if (syscall_fmts[i].alias && strcmp(syscall_fmts[i].alias, alias) == 0)
874 return &syscall_fmts[i];
881 * is_exit: is this "exit" or "exit_group"?
882 * is_open: is this "open" or "openat"? To associate the fd returned in sys_exit with the pathname in sys_enter.
883 * args_size: sum of the sizes of the syscall arguments, anything after that is augmented stuff: pathname for openat, etc.
886 struct tep_event_format *tp_format;
891 struct tep_format_field *args;
893 struct syscall_fmt *fmt;
894 struct syscall_arg_fmt *arg_fmt;
898 * We need to have this 'calculated' boolean because in some cases we really
899 * don't know what is the duration of a syscall, for instance, when we start
900 * a session and some threads are waiting for a syscall to finish, say 'poll',
901 * in which case all we can do is to print "( ? ) for duration and for the
904 static size_t fprintf_duration(unsigned long t, bool calculated, FILE *fp)
906 double duration = (double)t / NSEC_PER_MSEC;
907 size_t printed = fprintf(fp, "(");
910 printed += fprintf(fp, " ");
911 else if (duration >= 1.0)
912 printed += color_fprintf(fp, PERF_COLOR_RED, "%6.3f ms", duration);
913 else if (duration >= 0.01)
914 printed += color_fprintf(fp, PERF_COLOR_YELLOW, "%6.3f ms", duration);
916 printed += color_fprintf(fp, PERF_COLOR_NORMAL, "%6.3f ms", duration);
917 return printed + fprintf(fp, "): ");
921 * filename.ptr: The filename char pointer that will be vfs_getname'd
922 * filename.entry_str_pos: Where to insert the string translated from
923 * filename.ptr by the vfs_getname tracepoint/kprobe.
924 * ret_scnprintf: syscall args may set this to a different syscall return
925 * formatter, for instance, fcntl may return fds, file flags, etc.
927 struct thread_trace {
930 unsigned long nr_events;
931 unsigned long pfmaj, pfmin;
934 size_t (*ret_scnprintf)(char *bf, size_t size, struct syscall_arg *arg);
937 short int entry_str_pos;
939 unsigned int namelen;
947 struct intlist *syscall_stats;
950 static struct thread_trace *thread_trace__new(void)
952 struct thread_trace *ttrace = zalloc(sizeof(struct thread_trace));
955 ttrace->paths.max = -1;
957 ttrace->syscall_stats = intlist__new(NULL);
962 static struct thread_trace *thread__trace(struct thread *thread, FILE *fp)
964 struct thread_trace *ttrace;
969 if (thread__priv(thread) == NULL)
970 thread__set_priv(thread, thread_trace__new());
972 if (thread__priv(thread) == NULL)
975 ttrace = thread__priv(thread);
980 color_fprintf(fp, PERF_COLOR_RED,
981 "WARNING: not enough memory, dropping samples!\n");
986 void syscall_arg__set_ret_scnprintf(struct syscall_arg *arg,
987 size_t (*ret_scnprintf)(char *bf, size_t size, struct syscall_arg *arg))
989 struct thread_trace *ttrace = thread__priv(arg->thread);
991 ttrace->ret_scnprintf = ret_scnprintf;
994 #define TRACE_PFMAJ (1 << 0)
995 #define TRACE_PFMIN (1 << 1)
997 static const size_t trace__entry_str_size = 2048;
999 static int trace__set_fd_pathname(struct thread *thread, int fd, const char *pathname)
1001 struct thread_trace *ttrace = thread__priv(thread);
1003 if (fd > ttrace->paths.max) {
1004 char **npath = realloc(ttrace->paths.table, (fd + 1) * sizeof(char *));
1009 if (ttrace->paths.max != -1) {
1010 memset(npath + ttrace->paths.max + 1, 0,
1011 (fd - ttrace->paths.max) * sizeof(char *));
1013 memset(npath, 0, (fd + 1) * sizeof(char *));
1016 ttrace->paths.table = npath;
1017 ttrace->paths.max = fd;
1020 ttrace->paths.table[fd] = strdup(pathname);
1022 return ttrace->paths.table[fd] != NULL ? 0 : -1;
1025 static int thread__read_fd_path(struct thread *thread, int fd)
1027 char linkname[PATH_MAX], pathname[PATH_MAX];
1031 if (thread->pid_ == thread->tid) {
1032 scnprintf(linkname, sizeof(linkname),
1033 "/proc/%d/fd/%d", thread->pid_, fd);
1035 scnprintf(linkname, sizeof(linkname),
1036 "/proc/%d/task/%d/fd/%d", thread->pid_, thread->tid, fd);
1039 if (lstat(linkname, &st) < 0 || st.st_size + 1 > (off_t)sizeof(pathname))
1042 ret = readlink(linkname, pathname, sizeof(pathname));
1044 if (ret < 0 || ret > st.st_size)
1047 pathname[ret] = '\0';
1048 return trace__set_fd_pathname(thread, fd, pathname);
1051 static const char *thread__fd_path(struct thread *thread, int fd,
1052 struct trace *trace)
1054 struct thread_trace *ttrace = thread__priv(thread);
1062 if ((fd > ttrace->paths.max || ttrace->paths.table[fd] == NULL)) {
1065 ++trace->stats.proc_getname;
1066 if (thread__read_fd_path(thread, fd))
1070 return ttrace->paths.table[fd];
1073 size_t syscall_arg__scnprintf_fd(char *bf, size_t size, struct syscall_arg *arg)
1076 size_t printed = scnprintf(bf, size, "%d", fd);
1077 const char *path = thread__fd_path(arg->thread, fd, arg->trace);
1080 printed += scnprintf(bf + printed, size - printed, "<%s>", path);
1085 size_t pid__scnprintf_fd(struct trace *trace, pid_t pid, int fd, char *bf, size_t size)
1087 size_t printed = scnprintf(bf, size, "%d", fd);
1088 struct thread *thread = machine__find_thread(trace->host, pid, pid);
1091 const char *path = thread__fd_path(thread, fd, trace);
1094 printed += scnprintf(bf + printed, size - printed, "<%s>", path);
1096 thread__put(thread);
1102 static size_t syscall_arg__scnprintf_close_fd(char *bf, size_t size,
1103 struct syscall_arg *arg)
1106 size_t printed = syscall_arg__scnprintf_fd(bf, size, arg);
1107 struct thread_trace *ttrace = thread__priv(arg->thread);
1109 if (ttrace && fd >= 0 && fd <= ttrace->paths.max)
1110 zfree(&ttrace->paths.table[fd]);
1115 static void thread__set_filename_pos(struct thread *thread, const char *bf,
1118 struct thread_trace *ttrace = thread__priv(thread);
1120 ttrace->filename.ptr = ptr;
1121 ttrace->filename.entry_str_pos = bf - ttrace->entry_str;
1124 static size_t syscall_arg__scnprintf_augmented_string(struct syscall_arg *arg, char *bf, size_t size)
1126 struct augmented_arg *augmented_arg = arg->augmented.args;
1128 return scnprintf(bf, size, "%.*s", augmented_arg->size, augmented_arg->value);
1131 static size_t syscall_arg__scnprintf_filename(char *bf, size_t size,
1132 struct syscall_arg *arg)
1134 unsigned long ptr = arg->val;
1136 if (arg->augmented.args)
1137 return syscall_arg__scnprintf_augmented_string(arg, bf, size);
1139 if (!arg->trace->vfs_getname)
1140 return scnprintf(bf, size, "%#x", ptr);
1142 thread__set_filename_pos(arg->thread, bf, ptr);
1146 static bool trace__filter_duration(struct trace *trace, double t)
1148 return t < (trace->duration_filter * NSEC_PER_MSEC);
1151 static size_t __trace__fprintf_tstamp(struct trace *trace, u64 tstamp, FILE *fp)
1153 double ts = (double)(tstamp - trace->base_time) / NSEC_PER_MSEC;
1155 return fprintf(fp, "%10.3f ", ts);
1159 * We're handling tstamp=0 as an undefined tstamp, i.e. like when we are
1160 * using ttrace->entry_time for a thread that receives a sys_exit without
1161 * first having received a sys_enter ("poll" issued before tracing session
1162 * starts, lost sys_enter exit due to ring buffer overflow).
1164 static size_t trace__fprintf_tstamp(struct trace *trace, u64 tstamp, FILE *fp)
1167 return __trace__fprintf_tstamp(trace, tstamp, fp);
1169 return fprintf(fp, " ? ");
1172 static bool done = false;
1173 static bool interrupted = false;
1175 static void sig_handler(int sig)
1178 interrupted = sig == SIGINT;
1181 static size_t trace__fprintf_comm_tid(struct trace *trace, struct thread *thread, FILE *fp)
1185 if (trace->multiple_threads) {
1186 if (trace->show_comm)
1187 printed += fprintf(fp, "%.14s/", thread__comm_str(thread));
1188 printed += fprintf(fp, "%d ", thread->tid);
1194 static size_t trace__fprintf_entry_head(struct trace *trace, struct thread *thread,
1195 u64 duration, bool duration_calculated, u64 tstamp, FILE *fp)
1197 size_t printed = trace__fprintf_tstamp(trace, tstamp, fp);
1198 printed += fprintf_duration(duration, duration_calculated, fp);
1199 return printed + trace__fprintf_comm_tid(trace, thread, fp);
1202 static int trace__process_event(struct trace *trace, struct machine *machine,
1203 union perf_event *event, struct perf_sample *sample)
1207 switch (event->header.type) {
1208 case PERF_RECORD_LOST:
1209 color_fprintf(trace->output, PERF_COLOR_RED,
1210 "LOST %" PRIu64 " events!\n", event->lost.lost);
1211 ret = machine__process_lost_event(machine, event, sample);
1214 ret = machine__process_event(machine, event, sample);
1221 static int trace__tool_process(struct perf_tool *tool,
1222 union perf_event *event,
1223 struct perf_sample *sample,
1224 struct machine *machine)
1226 struct trace *trace = container_of(tool, struct trace, tool);
1227 return trace__process_event(trace, machine, event, sample);
1230 static char *trace__machine__resolve_kernel_addr(void *vmachine, unsigned long long *addrp, char **modp)
1232 struct machine *machine = vmachine;
1234 if (machine->kptr_restrict_warned)
1237 if (symbol_conf.kptr_restrict) {
1238 pr_warning("Kernel address maps (/proc/{kallsyms,modules}) are restricted.\n\n"
1239 "Check /proc/sys/kernel/kptr_restrict.\n\n"
1240 "Kernel samples will not be resolved.\n");
1241 machine->kptr_restrict_warned = true;
1245 return machine__resolve_kernel_addr(vmachine, addrp, modp);
1248 static int trace__symbols_init(struct trace *trace, struct perf_evlist *evlist)
1250 int err = symbol__init(NULL);
1255 trace->host = machine__new_host();
1256 if (trace->host == NULL)
1259 err = trace_event__register_resolver(trace->host, trace__machine__resolve_kernel_addr);
1263 err = __machine__synthesize_threads(trace->host, &trace->tool, &trace->opts.target,
1264 evlist->threads, trace__tool_process, false,
1265 trace->opts.proc_map_timeout, 1);
1273 static void trace__symbols__exit(struct trace *trace)
1275 machine__exit(trace->host);
1281 static int syscall__alloc_arg_fmts(struct syscall *sc, int nr_args)
1285 if (nr_args == 6 && sc->fmt && sc->fmt->nr_args != 0)
1286 nr_args = sc->fmt->nr_args;
1288 sc->arg_fmt = calloc(nr_args, sizeof(*sc->arg_fmt));
1289 if (sc->arg_fmt == NULL)
1292 for (idx = 0; idx < nr_args; ++idx) {
1294 sc->arg_fmt[idx] = sc->fmt->arg[idx];
1297 sc->nr_args = nr_args;
1301 static int syscall__set_arg_fmts(struct syscall *sc)
1303 struct tep_format_field *field, *last_field = NULL;
1306 for (field = sc->args; field; field = field->next, ++idx) {
1309 if (sc->fmt && sc->fmt->arg[idx].scnprintf)
1312 if (strcmp(field->type, "const char *") == 0 &&
1313 (strcmp(field->name, "filename") == 0 ||
1314 strcmp(field->name, "path") == 0 ||
1315 strcmp(field->name, "pathname") == 0))
1316 sc->arg_fmt[idx].scnprintf = SCA_FILENAME;
1317 else if (field->flags & TEP_FIELD_IS_POINTER)
1318 sc->arg_fmt[idx].scnprintf = syscall_arg__scnprintf_hex;
1319 else if (strcmp(field->type, "pid_t") == 0)
1320 sc->arg_fmt[idx].scnprintf = SCA_PID;
1321 else if (strcmp(field->type, "umode_t") == 0)
1322 sc->arg_fmt[idx].scnprintf = SCA_MODE_T;
1323 else if ((strcmp(field->type, "int") == 0 ||
1324 strcmp(field->type, "unsigned int") == 0 ||
1325 strcmp(field->type, "long") == 0) &&
1326 (len = strlen(field->name)) >= 2 &&
1327 strcmp(field->name + len - 2, "fd") == 0) {
1329 * /sys/kernel/tracing/events/syscalls/sys_enter*
1330 * egrep 'field:.*fd;' .../format|sed -r 's/.*field:([a-z ]+) [a-z_]*fd.+/\1/g'|sort|uniq -c
1335 sc->arg_fmt[idx].scnprintf = SCA_FD;
1340 sc->args_size = last_field->offset + last_field->size;
1345 static int trace__read_syscall_info(struct trace *trace, int id)
1349 const char *name = syscalltbl__name(trace->sctbl, id);
1354 if (id > trace->syscalls.max) {
1355 struct syscall *nsyscalls = realloc(trace->syscalls.table, (id + 1) * sizeof(*sc));
1357 if (nsyscalls == NULL)
1360 if (trace->syscalls.max != -1) {
1361 memset(nsyscalls + trace->syscalls.max + 1, 0,
1362 (id - trace->syscalls.max) * sizeof(*sc));
1364 memset(nsyscalls, 0, (id + 1) * sizeof(*sc));
1367 trace->syscalls.table = nsyscalls;
1368 trace->syscalls.max = id;
1371 sc = trace->syscalls.table + id;
1374 sc->fmt = syscall_fmt__find(sc->name);
1376 snprintf(tp_name, sizeof(tp_name), "sys_enter_%s", sc->name);
1377 sc->tp_format = trace_event__tp_format("syscalls", tp_name);
1379 if (IS_ERR(sc->tp_format) && sc->fmt && sc->fmt->alias) {
1380 snprintf(tp_name, sizeof(tp_name), "sys_enter_%s", sc->fmt->alias);
1381 sc->tp_format = trace_event__tp_format("syscalls", tp_name);
1384 if (syscall__alloc_arg_fmts(sc, IS_ERR(sc->tp_format) ? 6 : sc->tp_format->format.nr_fields))
1387 if (IS_ERR(sc->tp_format))
1390 sc->args = sc->tp_format->format.fields;
1392 * We need to check and discard the first variable '__syscall_nr'
1393 * or 'nr' that mean the syscall number. It is needless here.
1394 * So drop '__syscall_nr' or 'nr' field but does not exist on older kernels.
1396 if (sc->args && (!strcmp(sc->args->name, "__syscall_nr") || !strcmp(sc->args->name, "nr"))) {
1397 sc->args = sc->args->next;
1401 sc->is_exit = !strcmp(name, "exit_group") || !strcmp(name, "exit");
1402 sc->is_open = !strcmp(name, "open") || !strcmp(name, "openat");
1404 return syscall__set_arg_fmts(sc);
1407 static int trace__validate_ev_qualifier(struct trace *trace)
1410 size_t nr_allocated;
1411 struct str_node *pos;
1413 trace->ev_qualifier_ids.nr = strlist__nr_entries(trace->ev_qualifier);
1414 trace->ev_qualifier_ids.entries = malloc(trace->ev_qualifier_ids.nr *
1415 sizeof(trace->ev_qualifier_ids.entries[0]));
1417 if (trace->ev_qualifier_ids.entries == NULL) {
1418 fputs("Error:\tNot enough memory for allocating events qualifier ids\n",
1424 nr_allocated = trace->ev_qualifier_ids.nr;
1427 strlist__for_each_entry(pos, trace->ev_qualifier) {
1428 const char *sc = pos->s;
1429 int id = syscalltbl__id(trace->sctbl, sc), match_next = -1;
1432 id = syscalltbl__strglobmatch_first(trace->sctbl, sc, &match_next);
1437 fputs("Error:\tInvalid syscall ", trace->output);
1440 fputs(", ", trace->output);
1443 fputs(sc, trace->output);
1446 trace->ev_qualifier_ids.entries[i++] = id;
1447 if (match_next == -1)
1451 id = syscalltbl__strglobmatch_next(trace->sctbl, sc, &match_next);
1454 if (nr_allocated == trace->ev_qualifier_ids.nr) {
1458 entries = realloc(trace->ev_qualifier_ids.entries,
1459 nr_allocated * sizeof(trace->ev_qualifier_ids.entries[0]));
1460 if (entries == NULL) {
1462 fputs("\nError:\t Not enough memory for parsing\n", trace->output);
1465 trace->ev_qualifier_ids.entries = entries;
1467 trace->ev_qualifier_ids.nr++;
1468 trace->ev_qualifier_ids.entries[i++] = id;
1473 fputs("\nHint:\ttry 'perf list syscalls:sys_enter_*'"
1474 "\nHint:\tand: 'man syscalls'\n", trace->output);
1476 zfree(&trace->ev_qualifier_ids.entries);
1477 trace->ev_qualifier_ids.nr = 0;
1484 * args is to be interpreted as a series of longs but we need to handle
1485 * 8-byte unaligned accesses. args points to raw_data within the event
1486 * and raw_data is guaranteed to be 8-byte unaligned because it is
1487 * preceded by raw_size which is a u32. So we need to copy args to a temp
1488 * variable to read it. Most notably this avoids extended load instructions
1489 * on unaligned addresses
1491 unsigned long syscall_arg__val(struct syscall_arg *arg, u8 idx)
1494 unsigned char *p = arg->args + sizeof(unsigned long) * idx;
1496 memcpy(&val, p, sizeof(val));
1500 static size_t syscall__scnprintf_name(struct syscall *sc, char *bf, size_t size,
1501 struct syscall_arg *arg)
1503 if (sc->arg_fmt && sc->arg_fmt[arg->idx].name)
1504 return scnprintf(bf, size, "%s: ", sc->arg_fmt[arg->idx].name);
1506 return scnprintf(bf, size, "arg%d: ", arg->idx);
1510 * Check if the value is in fact zero, i.e. mask whatever needs masking, such
1511 * as mount 'flags' argument that needs ignoring some magic flag, see comment
1512 * in tools/perf/trace/beauty/mount_flags.c
1514 static unsigned long syscall__mask_val(struct syscall *sc, struct syscall_arg *arg, unsigned long val)
1516 if (sc->arg_fmt && sc->arg_fmt[arg->idx].mask_val)
1517 return sc->arg_fmt[arg->idx].mask_val(arg, val);
1522 static size_t syscall__scnprintf_val(struct syscall *sc, char *bf, size_t size,
1523 struct syscall_arg *arg, unsigned long val)
1525 if (sc->arg_fmt && sc->arg_fmt[arg->idx].scnprintf) {
1527 if (sc->arg_fmt[arg->idx].parm)
1528 arg->parm = sc->arg_fmt[arg->idx].parm;
1529 return sc->arg_fmt[arg->idx].scnprintf(bf, size, arg);
1531 return scnprintf(bf, size, "%ld", val);
1534 static size_t syscall__scnprintf_args(struct syscall *sc, char *bf, size_t size,
1535 unsigned char *args, void *augmented_args, int augmented_args_size,
1536 struct trace *trace, struct thread *thread)
1541 struct syscall_arg arg = {
1544 .size = augmented_args_size,
1545 .args = augmented_args,
1552 struct thread_trace *ttrace = thread__priv(thread);
1555 * Things like fcntl will set this in its 'cmd' formatter to pick the
1556 * right formatter for the return value (an fd? file flags?), which is
1557 * not needed for syscalls that always return a given type, say an fd.
1559 ttrace->ret_scnprintf = NULL;
1561 if (sc->args != NULL) {
1562 struct tep_format_field *field;
1564 for (field = sc->args; field;
1565 field = field->next, ++arg.idx, bit <<= 1) {
1569 val = syscall_arg__val(&arg, arg.idx);
1571 * Some syscall args need some mask, most don't and
1572 * return val untouched.
1574 val = syscall__mask_val(sc, &arg, val);
1577 * Suppress this argument if its value is zero and
1578 * and we don't have a string associated in an
1583 (sc->arg_fmt[arg.idx].show_zero ||
1584 sc->arg_fmt[arg.idx].scnprintf == SCA_STRARRAY ||
1585 sc->arg_fmt[arg.idx].scnprintf == SCA_STRARRAYS) &&
1586 sc->arg_fmt[arg.idx].parm))
1589 printed += scnprintf(bf + printed, size - printed,
1590 "%s%s: ", printed ? ", " : "", field->name);
1591 printed += syscall__scnprintf_val(sc, bf + printed, size - printed, &arg, val);
1593 } else if (IS_ERR(sc->tp_format)) {
1595 * If we managed to read the tracepoint /format file, then we
1596 * may end up not having any args, like with gettid(), so only
1597 * print the raw args when we didn't manage to read it.
1599 while (arg.idx < sc->nr_args) {
1602 val = syscall_arg__val(&arg, arg.idx);
1604 printed += scnprintf(bf + printed, size - printed, ", ");
1605 printed += syscall__scnprintf_name(sc, bf + printed, size - printed, &arg);
1606 printed += syscall__scnprintf_val(sc, bf + printed, size - printed, &arg, val);
1616 typedef int (*tracepoint_handler)(struct trace *trace, struct perf_evsel *evsel,
1617 union perf_event *event,
1618 struct perf_sample *sample);
1620 static struct syscall *trace__syscall_info(struct trace *trace,
1621 struct perf_evsel *evsel, int id)
1627 * XXX: Noticed on x86_64, reproduced as far back as 3.0.36, haven't tried
1628 * before that, leaving at a higher verbosity level till that is
1629 * explained. Reproduced with plain ftrace with:
1631 * echo 1 > /t/events/raw_syscalls/sys_exit/enable
1632 * grep "NR -1 " /t/trace_pipe
1634 * After generating some load on the machine.
1638 fprintf(trace->output, "Invalid syscall %d id, skipping (%s, %" PRIu64 ") ...\n",
1639 id, perf_evsel__name(evsel), ++n);
1644 if ((id > trace->syscalls.max || trace->syscalls.table[id].name == NULL) &&
1645 trace__read_syscall_info(trace, id))
1648 if ((id > trace->syscalls.max || trace->syscalls.table[id].name == NULL))
1651 return &trace->syscalls.table[id];
1655 fprintf(trace->output, "Problems reading syscall %d", id);
1656 if (id <= trace->syscalls.max && trace->syscalls.table[id].name != NULL)
1657 fprintf(trace->output, "(%s)", trace->syscalls.table[id].name);
1658 fputs(" information\n", trace->output);
1663 static void thread__update_stats(struct thread_trace *ttrace,
1664 int id, struct perf_sample *sample)
1666 struct int_node *inode;
1667 struct stats *stats;
1670 inode = intlist__findnew(ttrace->syscall_stats, id);
1674 stats = inode->priv;
1675 if (stats == NULL) {
1676 stats = malloc(sizeof(struct stats));
1680 inode->priv = stats;
1683 if (ttrace->entry_time && sample->time > ttrace->entry_time)
1684 duration = sample->time - ttrace->entry_time;
1686 update_stats(stats, duration);
1689 static int trace__printf_interrupted_entry(struct trace *trace)
1691 struct thread_trace *ttrace;
1694 if (trace->failure_only || trace->current == NULL)
1697 ttrace = thread__priv(trace->current);
1699 if (!ttrace->entry_pending)
1702 printed = trace__fprintf_entry_head(trace, trace->current, 0, false, ttrace->entry_time, trace->output);
1703 printed += fprintf(trace->output, "%-70s) ...\n", ttrace->entry_str);
1704 ttrace->entry_pending = false;
1706 ++trace->nr_events_printed;
1711 static int trace__fprintf_sample(struct trace *trace, struct perf_evsel *evsel,
1712 struct perf_sample *sample, struct thread *thread)
1716 if (trace->print_sample) {
1717 double ts = (double)sample->time / NSEC_PER_MSEC;
1719 printed += fprintf(trace->output, "%22s %10.3f %s %d/%d [%d]\n",
1720 perf_evsel__name(evsel), ts,
1721 thread__comm_str(thread),
1722 sample->pid, sample->tid, sample->cpu);
1728 static void *syscall__augmented_args(struct syscall *sc, struct perf_sample *sample, int *augmented_args_size, bool raw_augmented)
1730 void *augmented_args = NULL;
1732 * For now with BPF raw_augmented we hook into raw_syscalls:sys_enter
1733 * and there we get all 6 syscall args plus the tracepoint common
1734 * fields (sizeof(long)) and the syscall_nr (another long). So we check
1735 * if that is the case and if so don't look after the sc->args_size,
1736 * but always after the full raw_syscalls:sys_enter payload, which is
1739 * We'll revisit this later to pass s->args_size to the BPF augmenter
1740 * (now tools/perf/examples/bpf/augmented_raw_syscalls.c, so that it
1741 * copies only what we need for each syscall, like what happens when we
1742 * use syscalls:sys_enter_NAME, so that we reduce the kernel/userspace
1743 * traffic to just what is needed for each syscall.
1745 int args_size = raw_augmented ? (8 * (int)sizeof(long)) : sc->args_size;
1747 *augmented_args_size = sample->raw_size - args_size;
1748 if (*augmented_args_size > 0)
1749 augmented_args = sample->raw_data + args_size;
1751 return augmented_args;
1754 static int trace__sys_enter(struct trace *trace, struct perf_evsel *evsel,
1755 union perf_event *event __maybe_unused,
1756 struct perf_sample *sample)
1761 struct thread *thread;
1762 int id = perf_evsel__sc_tp_uint(evsel, id, sample), err = -1;
1763 int augmented_args_size = 0;
1764 void *augmented_args = NULL;
1765 struct syscall *sc = trace__syscall_info(trace, evsel, id);
1766 struct thread_trace *ttrace;
1771 thread = machine__findnew_thread(trace->host, sample->pid, sample->tid);
1772 ttrace = thread__trace(thread, trace->output);
1776 trace__fprintf_sample(trace, evsel, sample, thread);
1778 args = perf_evsel__sc_tp_ptr(evsel, args, sample);
1780 if (ttrace->entry_str == NULL) {
1781 ttrace->entry_str = malloc(trace__entry_str_size);
1782 if (!ttrace->entry_str)
1786 if (!(trace->duration_filter || trace->summary_only || trace->min_stack))
1787 trace__printf_interrupted_entry(trace);
1789 * If this is raw_syscalls.sys_enter, then it always comes with the 6 possible
1790 * arguments, even if the syscall being handled, say "openat", uses only 4 arguments
1791 * this breaks syscall__augmented_args() check for augmented args, as we calculate
1792 * syscall->args_size using each syscalls:sys_enter_NAME tracefs format file,
1793 * so when handling, say the openat syscall, we end up getting 6 args for the
1794 * raw_syscalls:sys_enter event, when we expected just 4, we end up mistakenly
1795 * thinking that the extra 2 u64 args are the augmented filename, so just check
1796 * here and avoid using augmented syscalls when the evsel is the raw_syscalls one.
1798 if (evsel != trace->syscalls.events.sys_enter)
1799 augmented_args = syscall__augmented_args(sc, sample, &augmented_args_size, trace->raw_augmented_syscalls);
1800 ttrace->entry_time = sample->time;
1801 msg = ttrace->entry_str;
1802 printed += scnprintf(msg + printed, trace__entry_str_size - printed, "%s(", sc->name);
1804 printed += syscall__scnprintf_args(sc, msg + printed, trace__entry_str_size - printed,
1805 args, augmented_args, augmented_args_size, trace, thread);
1808 if (!(trace->duration_filter || trace->summary_only || trace->failure_only || trace->min_stack)) {
1809 trace__fprintf_entry_head(trace, thread, 0, false, ttrace->entry_time, trace->output);
1810 fprintf(trace->output, "%-70s)\n", ttrace->entry_str);
1813 ttrace->entry_pending = true;
1814 /* See trace__vfs_getname & trace__sys_exit */
1815 ttrace->filename.pending_open = false;
1818 if (trace->current != thread) {
1819 thread__put(trace->current);
1820 trace->current = thread__get(thread);
1824 thread__put(thread);
1828 static int trace__fprintf_sys_enter(struct trace *trace, struct perf_evsel *evsel,
1829 struct perf_sample *sample)
1831 struct thread_trace *ttrace;
1832 struct thread *thread;
1833 int id = perf_evsel__sc_tp_uint(evsel, id, sample), err = -1;
1834 struct syscall *sc = trace__syscall_info(trace, evsel, id);
1836 void *args, *augmented_args = NULL;
1837 int augmented_args_size;
1842 thread = machine__findnew_thread(trace->host, sample->pid, sample->tid);
1843 ttrace = thread__trace(thread, trace->output);
1845 * We need to get ttrace just to make sure it is there when syscall__scnprintf_args()
1846 * and the rest of the beautifiers accessing it via struct syscall_arg touches it.
1851 args = perf_evsel__sc_tp_ptr(evsel, args, sample);
1852 augmented_args = syscall__augmented_args(sc, sample, &augmented_args_size, trace->raw_augmented_syscalls);
1853 syscall__scnprintf_args(sc, msg, sizeof(msg), args, augmented_args, augmented_args_size, trace, thread);
1854 fprintf(trace->output, "%s", msg);
1857 thread__put(thread);
1861 static int trace__resolve_callchain(struct trace *trace, struct perf_evsel *evsel,
1862 struct perf_sample *sample,
1863 struct callchain_cursor *cursor)
1865 struct addr_location al;
1866 int max_stack = evsel->attr.sample_max_stack ?
1867 evsel->attr.sample_max_stack :
1871 if (machine__resolve(trace->host, &al, sample) < 0)
1874 err = thread__resolve_callchain(al.thread, cursor, evsel, sample, NULL, NULL, max_stack);
1875 addr_location__put(&al);
1879 static int trace__fprintf_callchain(struct trace *trace, struct perf_sample *sample)
1881 /* TODO: user-configurable print_opts */
1882 const unsigned int print_opts = EVSEL__PRINT_SYM |
1884 EVSEL__PRINT_UNKNOWN_AS_ADDR;
1886 return sample__fprintf_callchain(sample, 38, print_opts, &callchain_cursor, trace->output);
1889 static const char *errno_to_name(struct perf_evsel *evsel, int err)
1891 struct perf_env *env = perf_evsel__env(evsel);
1892 const char *arch_name = perf_env__arch(env);
1894 return arch_syscalls__strerrno(arch_name, err);
1897 static int trace__sys_exit(struct trace *trace, struct perf_evsel *evsel,
1898 union perf_event *event __maybe_unused,
1899 struct perf_sample *sample)
1903 bool duration_calculated = false;
1904 struct thread *thread;
1905 int id = perf_evsel__sc_tp_uint(evsel, id, sample), err = -1, callchain_ret = 0;
1906 struct syscall *sc = trace__syscall_info(trace, evsel, id);
1907 struct thread_trace *ttrace;
1912 thread = machine__findnew_thread(trace->host, sample->pid, sample->tid);
1913 ttrace = thread__trace(thread, trace->output);
1917 trace__fprintf_sample(trace, evsel, sample, thread);
1920 thread__update_stats(ttrace, id, sample);
1922 ret = perf_evsel__sc_tp_uint(evsel, ret, sample);
1924 if (sc->is_open && ret >= 0 && ttrace->filename.pending_open) {
1925 trace__set_fd_pathname(thread, ret, ttrace->filename.name);
1926 ttrace->filename.pending_open = false;
1927 ++trace->stats.vfs_getname;
1930 if (ttrace->entry_time) {
1931 duration = sample->time - ttrace->entry_time;
1932 if (trace__filter_duration(trace, duration))
1934 duration_calculated = true;
1935 } else if (trace->duration_filter)
1938 if (sample->callchain) {
1939 callchain_ret = trace__resolve_callchain(trace, evsel, sample, &callchain_cursor);
1940 if (callchain_ret == 0) {
1941 if (callchain_cursor.nr < trace->min_stack)
1947 if (trace->summary_only || (ret >= 0 && trace->failure_only))
1950 trace__fprintf_entry_head(trace, thread, duration, duration_calculated, ttrace->entry_time, trace->output);
1952 if (ttrace->entry_pending) {
1953 fprintf(trace->output, "%-70s", ttrace->entry_str);
1955 fprintf(trace->output, " ... [");
1956 color_fprintf(trace->output, PERF_COLOR_YELLOW, "continued");
1957 fprintf(trace->output, "]: %s()", sc->name);
1960 if (sc->fmt == NULL) {
1964 fprintf(trace->output, ") = %ld", ret);
1965 } else if (ret < 0) {
1967 char bf[STRERR_BUFSIZE];
1968 const char *emsg = str_error_r(-ret, bf, sizeof(bf)),
1969 *e = errno_to_name(evsel, -ret);
1971 fprintf(trace->output, ") = -1 %s %s", e, emsg);
1973 } else if (ret == 0 && sc->fmt->timeout)
1974 fprintf(trace->output, ") = 0 Timeout");
1975 else if (ttrace->ret_scnprintf) {
1977 struct syscall_arg arg = {
1982 ttrace->ret_scnprintf(bf, sizeof(bf), &arg);
1983 ttrace->ret_scnprintf = NULL;
1984 fprintf(trace->output, ") = %s", bf);
1985 } else if (sc->fmt->hexret)
1986 fprintf(trace->output, ") = %#lx", ret);
1987 else if (sc->fmt->errpid) {
1988 struct thread *child = machine__find_thread(trace->host, ret, ret);
1990 if (child != NULL) {
1991 fprintf(trace->output, ") = %ld", ret);
1992 if (child->comm_set)
1993 fprintf(trace->output, " (%s)", thread__comm_str(child));
1999 fputc('\n', trace->output);
2002 * We only consider an 'event' for the sake of --max-events a non-filtered
2003 * sys_enter + sys_exit and other tracepoint events.
2005 if (++trace->nr_events_printed == trace->max_events && trace->max_events != ULONG_MAX)
2008 if (callchain_ret > 0)
2009 trace__fprintf_callchain(trace, sample);
2010 else if (callchain_ret < 0)
2011 pr_err("Problem processing %s callchain, skipping...\n", perf_evsel__name(evsel));
2013 ttrace->entry_pending = false;
2016 thread__put(thread);
2020 static int trace__vfs_getname(struct trace *trace, struct perf_evsel *evsel,
2021 union perf_event *event __maybe_unused,
2022 struct perf_sample *sample)
2024 struct thread *thread = machine__findnew_thread(trace->host, sample->pid, sample->tid);
2025 struct thread_trace *ttrace;
2026 size_t filename_len, entry_str_len, to_move;
2027 ssize_t remaining_space;
2029 const char *filename = perf_evsel__rawptr(evsel, sample, "pathname");
2034 ttrace = thread__priv(thread);
2038 filename_len = strlen(filename);
2039 if (filename_len == 0)
2042 if (ttrace->filename.namelen < filename_len) {
2043 char *f = realloc(ttrace->filename.name, filename_len + 1);
2048 ttrace->filename.namelen = filename_len;
2049 ttrace->filename.name = f;
2052 strcpy(ttrace->filename.name, filename);
2053 ttrace->filename.pending_open = true;
2055 if (!ttrace->filename.ptr)
2058 entry_str_len = strlen(ttrace->entry_str);
2059 remaining_space = trace__entry_str_size - entry_str_len - 1; /* \0 */
2060 if (remaining_space <= 0)
2063 if (filename_len > (size_t)remaining_space) {
2064 filename += filename_len - remaining_space;
2065 filename_len = remaining_space;
2068 to_move = entry_str_len - ttrace->filename.entry_str_pos + 1; /* \0 */
2069 pos = ttrace->entry_str + ttrace->filename.entry_str_pos;
2070 memmove(pos + filename_len, pos, to_move);
2071 memcpy(pos, filename, filename_len);
2073 ttrace->filename.ptr = 0;
2074 ttrace->filename.entry_str_pos = 0;
2076 thread__put(thread);
2081 static int trace__sched_stat_runtime(struct trace *trace, struct perf_evsel *evsel,
2082 union perf_event *event __maybe_unused,
2083 struct perf_sample *sample)
2085 u64 runtime = perf_evsel__intval(evsel, sample, "runtime");
2086 double runtime_ms = (double)runtime / NSEC_PER_MSEC;
2087 struct thread *thread = machine__findnew_thread(trace->host,
2090 struct thread_trace *ttrace = thread__trace(thread, trace->output);
2095 ttrace->runtime_ms += runtime_ms;
2096 trace->runtime_ms += runtime_ms;
2098 thread__put(thread);
2102 fprintf(trace->output, "%s: comm=%s,pid=%u,runtime=%" PRIu64 ",vruntime=%" PRIu64 ")\n",
2104 perf_evsel__strval(evsel, sample, "comm"),
2105 (pid_t)perf_evsel__intval(evsel, sample, "pid"),
2107 perf_evsel__intval(evsel, sample, "vruntime"));
2111 static int bpf_output__printer(enum binary_printer_ops op,
2112 unsigned int val, void *extra __maybe_unused, FILE *fp)
2114 unsigned char ch = (unsigned char)val;
2117 case BINARY_PRINT_CHAR_DATA:
2118 return fprintf(fp, "%c", isprint(ch) ? ch : '.');
2119 case BINARY_PRINT_DATA_BEGIN:
2120 case BINARY_PRINT_LINE_BEGIN:
2121 case BINARY_PRINT_ADDR:
2122 case BINARY_PRINT_NUM_DATA:
2123 case BINARY_PRINT_NUM_PAD:
2124 case BINARY_PRINT_SEP:
2125 case BINARY_PRINT_CHAR_PAD:
2126 case BINARY_PRINT_LINE_END:
2127 case BINARY_PRINT_DATA_END:
2135 static void bpf_output__fprintf(struct trace *trace,
2136 struct perf_sample *sample)
2138 binary__fprintf(sample->raw_data, sample->raw_size, 8,
2139 bpf_output__printer, NULL, trace->output);
2140 ++trace->nr_events_printed;
2143 static int trace__event_handler(struct trace *trace, struct perf_evsel *evsel,
2144 union perf_event *event __maybe_unused,
2145 struct perf_sample *sample)
2147 struct thread *thread;
2148 int callchain_ret = 0;
2150 * Check if we called perf_evsel__disable(evsel) due to, for instance,
2151 * this event's max_events having been hit and this is an entry coming
2152 * from the ring buffer that we should discard, since the max events
2153 * have already been considered/printed.
2155 if (evsel->disabled)
2158 thread = machine__findnew_thread(trace->host, sample->pid, sample->tid);
2160 if (sample->callchain) {
2161 callchain_ret = trace__resolve_callchain(trace, evsel, sample, &callchain_cursor);
2162 if (callchain_ret == 0) {
2163 if (callchain_cursor.nr < trace->min_stack)
2169 trace__printf_interrupted_entry(trace);
2170 trace__fprintf_tstamp(trace, sample->time, trace->output);
2172 if (trace->trace_syscalls)
2173 fprintf(trace->output, "( ): ");
2176 trace__fprintf_comm_tid(trace, thread, trace->output);
2178 if (evsel == trace->syscalls.events.augmented) {
2179 int id = perf_evsel__sc_tp_uint(evsel, id, sample);
2180 struct syscall *sc = trace__syscall_info(trace, evsel, id);
2183 fprintf(trace->output, "%s(", sc->name);
2184 trace__fprintf_sys_enter(trace, evsel, sample);
2185 fputc(')', trace->output);
2190 * XXX: Not having the associated syscall info or not finding/adding
2191 * the thread should never happen, but if it does...
2192 * fall thru and print it as a bpf_output event.
2196 fprintf(trace->output, "%s:", evsel->name);
2198 if (perf_evsel__is_bpf_output(evsel)) {
2199 bpf_output__fprintf(trace, sample);
2200 } else if (evsel->tp_format) {
2201 if (strncmp(evsel->tp_format->name, "sys_enter_", 10) ||
2202 trace__fprintf_sys_enter(trace, evsel, sample)) {
2203 event_format__fprintf(evsel->tp_format, sample->cpu,
2204 sample->raw_data, sample->raw_size,
2206 ++trace->nr_events_printed;
2208 if (evsel->max_events != ULONG_MAX && ++evsel->nr_events_printed == evsel->max_events) {
2209 perf_evsel__disable(evsel);
2210 perf_evsel__close(evsel);
2216 fprintf(trace->output, "\n");
2218 if (callchain_ret > 0)
2219 trace__fprintf_callchain(trace, sample);
2220 else if (callchain_ret < 0)
2221 pr_err("Problem processing %s callchain, skipping...\n", perf_evsel__name(evsel));
2223 thread__put(thread);
2227 static void print_location(FILE *f, struct perf_sample *sample,
2228 struct addr_location *al,
2229 bool print_dso, bool print_sym)
2232 if ((verbose > 0 || print_dso) && al->map)
2233 fprintf(f, "%s@", al->map->dso->long_name);
2235 if ((verbose > 0 || print_sym) && al->sym)
2236 fprintf(f, "%s+0x%" PRIx64, al->sym->name,
2237 al->addr - al->sym->start);
2239 fprintf(f, "0x%" PRIx64, al->addr);
2241 fprintf(f, "0x%" PRIx64, sample->addr);
2244 static int trace__pgfault(struct trace *trace,
2245 struct perf_evsel *evsel,
2246 union perf_event *event __maybe_unused,
2247 struct perf_sample *sample)
2249 struct thread *thread;
2250 struct addr_location al;
2251 char map_type = 'd';
2252 struct thread_trace *ttrace;
2254 int callchain_ret = 0;
2256 thread = machine__findnew_thread(trace->host, sample->pid, sample->tid);
2258 if (sample->callchain) {
2259 callchain_ret = trace__resolve_callchain(trace, evsel, sample, &callchain_cursor);
2260 if (callchain_ret == 0) {
2261 if (callchain_cursor.nr < trace->min_stack)
2267 ttrace = thread__trace(thread, trace->output);
2271 if (evsel->attr.config == PERF_COUNT_SW_PAGE_FAULTS_MAJ)
2276 if (trace->summary_only)
2279 thread__find_symbol(thread, sample->cpumode, sample->ip, &al);
2281 trace__fprintf_entry_head(trace, thread, 0, true, sample->time, trace->output);
2283 fprintf(trace->output, "%sfault [",
2284 evsel->attr.config == PERF_COUNT_SW_PAGE_FAULTS_MAJ ?
2287 print_location(trace->output, sample, &al, false, true);
2289 fprintf(trace->output, "] => ");
2291 thread__find_symbol(thread, sample->cpumode, sample->addr, &al);
2294 thread__find_symbol(thread, sample->cpumode, sample->addr, &al);
2302 print_location(trace->output, sample, &al, true, false);
2304 fprintf(trace->output, " (%c%c)\n", map_type, al.level);
2306 if (callchain_ret > 0)
2307 trace__fprintf_callchain(trace, sample);
2308 else if (callchain_ret < 0)
2309 pr_err("Problem processing %s callchain, skipping...\n", perf_evsel__name(evsel));
2311 ++trace->nr_events_printed;
2315 thread__put(thread);
2319 static void trace__set_base_time(struct trace *trace,
2320 struct perf_evsel *evsel,
2321 struct perf_sample *sample)
2324 * BPF events were not setting PERF_SAMPLE_TIME, so be more robust
2325 * and don't use sample->time unconditionally, we may end up having
2326 * some other event in the future without PERF_SAMPLE_TIME for good
2327 * reason, i.e. we may not be interested in its timestamps, just in
2328 * it taking place, picking some piece of information when it
2329 * appears in our event stream (vfs_getname comes to mind).
2331 if (trace->base_time == 0 && !trace->full_time &&
2332 (evsel->attr.sample_type & PERF_SAMPLE_TIME))
2333 trace->base_time = sample->time;
2336 static int trace__process_sample(struct perf_tool *tool,
2337 union perf_event *event,
2338 struct perf_sample *sample,
2339 struct perf_evsel *evsel,
2340 struct machine *machine __maybe_unused)
2342 struct trace *trace = container_of(tool, struct trace, tool);
2343 struct thread *thread;
2346 tracepoint_handler handler = evsel->handler;
2348 thread = machine__findnew_thread(trace->host, sample->pid, sample->tid);
2349 if (thread && thread__is_filtered(thread))
2352 trace__set_base_time(trace, evsel, sample);
2356 handler(trace, evsel, event, sample);
2359 thread__put(thread);
2363 static int trace__record(struct trace *trace, int argc, const char **argv)
2365 unsigned int rec_argc, i, j;
2366 const char **rec_argv;
2367 const char * const record_args[] = {
2374 const char * const sc_args[] = { "-e", };
2375 unsigned int sc_args_nr = ARRAY_SIZE(sc_args);
2376 const char * const majpf_args[] = { "-e", "major-faults" };
2377 unsigned int majpf_args_nr = ARRAY_SIZE(majpf_args);
2378 const char * const minpf_args[] = { "-e", "minor-faults" };
2379 unsigned int minpf_args_nr = ARRAY_SIZE(minpf_args);
2381 /* +1 is for the event string below */
2382 rec_argc = ARRAY_SIZE(record_args) + sc_args_nr + 1 +
2383 majpf_args_nr + minpf_args_nr + argc;
2384 rec_argv = calloc(rec_argc + 1, sizeof(char *));
2386 if (rec_argv == NULL)
2390 for (i = 0; i < ARRAY_SIZE(record_args); i++)
2391 rec_argv[j++] = record_args[i];
2393 if (trace->trace_syscalls) {
2394 for (i = 0; i < sc_args_nr; i++)
2395 rec_argv[j++] = sc_args[i];
2397 /* event string may be different for older kernels - e.g., RHEL6 */
2398 if (is_valid_tracepoint("raw_syscalls:sys_enter"))
2399 rec_argv[j++] = "raw_syscalls:sys_enter,raw_syscalls:sys_exit";
2400 else if (is_valid_tracepoint("syscalls:sys_enter"))
2401 rec_argv[j++] = "syscalls:sys_enter,syscalls:sys_exit";
2403 pr_err("Neither raw_syscalls nor syscalls events exist.\n");
2409 if (trace->trace_pgfaults & TRACE_PFMAJ)
2410 for (i = 0; i < majpf_args_nr; i++)
2411 rec_argv[j++] = majpf_args[i];
2413 if (trace->trace_pgfaults & TRACE_PFMIN)
2414 for (i = 0; i < minpf_args_nr; i++)
2415 rec_argv[j++] = minpf_args[i];
2417 for (i = 0; i < (unsigned int)argc; i++)
2418 rec_argv[j++] = argv[i];
2420 return cmd_record(j, rec_argv);
2423 static size_t trace__fprintf_thread_summary(struct trace *trace, FILE *fp);
2425 static bool perf_evlist__add_vfs_getname(struct perf_evlist *evlist)
2427 struct perf_evsel *evsel = perf_evsel__newtp("probe", "vfs_getname");
2432 if (perf_evsel__field(evsel, "pathname") == NULL) {
2433 perf_evsel__delete(evsel);
2437 evsel->handler = trace__vfs_getname;
2438 perf_evlist__add(evlist, evsel);
2442 static struct perf_evsel *perf_evsel__new_pgfault(u64 config)
2444 struct perf_evsel *evsel;
2445 struct perf_event_attr attr = {
2446 .type = PERF_TYPE_SOFTWARE,
2450 attr.config = config;
2451 attr.sample_period = 1;
2453 event_attr_init(&attr);
2455 evsel = perf_evsel__new(&attr);
2457 evsel->handler = trace__pgfault;
2462 static void trace__handle_event(struct trace *trace, union perf_event *event, struct perf_sample *sample)
2464 const u32 type = event->header.type;
2465 struct perf_evsel *evsel;
2467 if (type != PERF_RECORD_SAMPLE) {
2468 trace__process_event(trace, trace->host, event, sample);
2472 evsel = perf_evlist__id2evsel(trace->evlist, sample->id);
2473 if (evsel == NULL) {
2474 fprintf(trace->output, "Unknown tp ID %" PRIu64 ", skipping...\n", sample->id);
2478 trace__set_base_time(trace, evsel, sample);
2480 if (evsel->attr.type == PERF_TYPE_TRACEPOINT &&
2481 sample->raw_data == NULL) {
2482 fprintf(trace->output, "%s sample with no payload for tid: %d, cpu %d, raw_size=%d, skipping...\n",
2483 perf_evsel__name(evsel), sample->tid,
2484 sample->cpu, sample->raw_size);
2486 tracepoint_handler handler = evsel->handler;
2487 handler(trace, evsel, event, sample);
2490 if (trace->nr_events_printed >= trace->max_events && trace->max_events != ULONG_MAX)
2494 static int trace__add_syscall_newtp(struct trace *trace)
2497 struct perf_evlist *evlist = trace->evlist;
2498 struct perf_evsel *sys_enter, *sys_exit;
2500 sys_enter = perf_evsel__raw_syscall_newtp("sys_enter", trace__sys_enter);
2501 if (sys_enter == NULL)
2504 if (perf_evsel__init_sc_tp_ptr_field(sys_enter, args))
2505 goto out_delete_sys_enter;
2507 sys_exit = perf_evsel__raw_syscall_newtp("sys_exit", trace__sys_exit);
2508 if (sys_exit == NULL)
2509 goto out_delete_sys_enter;
2511 if (perf_evsel__init_sc_tp_uint_field(sys_exit, ret))
2512 goto out_delete_sys_exit;
2514 perf_evsel__config_callchain(sys_enter, &trace->opts, &callchain_param);
2515 perf_evsel__config_callchain(sys_exit, &trace->opts, &callchain_param);
2517 perf_evlist__add(evlist, sys_enter);
2518 perf_evlist__add(evlist, sys_exit);
2520 if (callchain_param.enabled && !trace->kernel_syscallchains) {
2522 * We're interested only in the user space callchain
2523 * leading to the syscall, allow overriding that for
2524 * debugging reasons using --kernel_syscall_callchains
2526 sys_exit->attr.exclude_callchain_kernel = 1;
2529 trace->syscalls.events.sys_enter = sys_enter;
2530 trace->syscalls.events.sys_exit = sys_exit;
2536 out_delete_sys_exit:
2537 perf_evsel__delete_priv(sys_exit);
2538 out_delete_sys_enter:
2539 perf_evsel__delete_priv(sys_enter);
2543 static int trace__set_ev_qualifier_filter(struct trace *trace)
2546 struct perf_evsel *sys_exit;
2547 char *filter = asprintf_expr_inout_ints("id", !trace->not_ev_qualifier,
2548 trace->ev_qualifier_ids.nr,
2549 trace->ev_qualifier_ids.entries);
2554 if (!perf_evsel__append_tp_filter(trace->syscalls.events.sys_enter,
2556 sys_exit = trace->syscalls.events.sys_exit;
2557 err = perf_evsel__append_tp_filter(sys_exit, filter);
2568 static int trace__set_filter_loop_pids(struct trace *trace)
2570 unsigned int nr = 1;
2574 struct thread *thread = machine__find_thread(trace->host, pids[0], pids[0]);
2576 while (thread && nr < ARRAY_SIZE(pids)) {
2577 struct thread *parent = machine__find_thread(trace->host, thread->ppid, thread->ppid);
2582 if (!strcmp(thread__comm_str(parent), "sshd")) {
2583 pids[nr++] = parent->tid;
2589 return perf_evlist__set_filter_pids(trace->evlist, nr, pids);
2592 static int trace__run(struct trace *trace, int argc, const char **argv)
2594 struct perf_evlist *evlist = trace->evlist;
2595 struct perf_evsel *evsel, *pgfault_maj = NULL, *pgfault_min = NULL;
2597 unsigned long before;
2598 const bool forks = argc > 0;
2599 bool draining = false;
2603 if (trace->trace_syscalls && trace__add_syscall_newtp(trace))
2604 goto out_error_raw_syscalls;
2606 if (trace->trace_syscalls)
2607 trace->vfs_getname = perf_evlist__add_vfs_getname(evlist);
2609 if ((trace->trace_pgfaults & TRACE_PFMAJ)) {
2610 pgfault_maj = perf_evsel__new_pgfault(PERF_COUNT_SW_PAGE_FAULTS_MAJ);
2611 if (pgfault_maj == NULL)
2613 perf_evsel__config_callchain(pgfault_maj, &trace->opts, &callchain_param);
2614 perf_evlist__add(evlist, pgfault_maj);
2617 if ((trace->trace_pgfaults & TRACE_PFMIN)) {
2618 pgfault_min = perf_evsel__new_pgfault(PERF_COUNT_SW_PAGE_FAULTS_MIN);
2619 if (pgfault_min == NULL)
2621 perf_evsel__config_callchain(pgfault_min, &trace->opts, &callchain_param);
2622 perf_evlist__add(evlist, pgfault_min);
2626 perf_evlist__add_newtp(evlist, "sched", "sched_stat_runtime",
2627 trace__sched_stat_runtime))
2628 goto out_error_sched_stat_runtime;
2631 * If a global cgroup was set, apply it to all the events without an
2632 * explicit cgroup. I.e.:
2634 * trace -G A -e sched:*switch
2636 * Will set all raw_syscalls:sys_{enter,exit}, pgfault, vfs_getname, etc
2637 * _and_ sched:sched_switch to the 'A' cgroup, while:
2639 * trace -e sched:*switch -G A
2641 * will only set the sched:sched_switch event to the 'A' cgroup, all the
2642 * other events (raw_syscalls:sys_{enter,exit}, etc are left "without"
2643 * a cgroup (on the root cgroup, sys wide, etc).
2647 * trace -G A -e sched:*switch -G B
2649 * the syscall ones go to the 'A' cgroup, the sched:sched_switch goes
2650 * to the 'B' cgroup.
2652 * evlist__set_default_cgroup() grabs a reference of the passed cgroup
2653 * only for the evsels still without a cgroup, i.e. evsel->cgroup == NULL.
2656 evlist__set_default_cgroup(trace->evlist, trace->cgroup);
2658 err = perf_evlist__create_maps(evlist, &trace->opts.target);
2660 fprintf(trace->output, "Problems parsing the target to trace, check your options!\n");
2661 goto out_delete_evlist;
2664 err = trace__symbols_init(trace, evlist);
2666 fprintf(trace->output, "Problems initializing symbol libraries!\n");
2667 goto out_delete_evlist;
2670 perf_evlist__config(evlist, &trace->opts, &callchain_param);
2672 signal(SIGCHLD, sig_handler);
2673 signal(SIGINT, sig_handler);
2676 err = perf_evlist__prepare_workload(evlist, &trace->opts.target,
2679 fprintf(trace->output, "Couldn't run the workload!\n");
2680 goto out_delete_evlist;
2684 err = perf_evlist__open(evlist);
2686 goto out_error_open;
2688 err = bpf__apply_obj_config();
2690 char errbuf[BUFSIZ];
2692 bpf__strerror_apply_obj_config(err, errbuf, sizeof(errbuf));
2693 pr_err("ERROR: Apply config to BPF failed: %s\n",
2695 goto out_error_open;
2699 * Better not use !target__has_task() here because we need to cover the
2700 * case where no threads were specified in the command line, but a
2701 * workload was, and in that case we will fill in the thread_map when
2702 * we fork the workload in perf_evlist__prepare_workload.
2704 if (trace->filter_pids.nr > 0)
2705 err = perf_evlist__set_filter_pids(evlist, trace->filter_pids.nr, trace->filter_pids.entries);
2706 else if (thread_map__pid(evlist->threads, 0) == -1)
2707 err = trace__set_filter_loop_pids(trace);
2712 if (trace->ev_qualifier_ids.nr > 0) {
2713 err = trace__set_ev_qualifier_filter(trace);
2717 pr_debug("event qualifier tracepoint filter: %s\n",
2718 trace->syscalls.events.sys_exit->filter);
2721 err = perf_evlist__apply_filters(evlist, &evsel);
2723 goto out_error_apply_filters;
2725 err = perf_evlist__mmap(evlist, trace->opts.mmap_pages);
2727 goto out_error_mmap;
2729 if (!target__none(&trace->opts.target) && !trace->opts.initial_delay)
2730 perf_evlist__enable(evlist);
2733 perf_evlist__start_workload(evlist);
2735 if (trace->opts.initial_delay) {
2736 usleep(trace->opts.initial_delay * 1000);
2737 perf_evlist__enable(evlist);
2740 trace->multiple_threads = thread_map__pid(evlist->threads, 0) == -1 ||
2741 evlist->threads->nr > 1 ||
2742 perf_evlist__first(evlist)->attr.inherit;
2745 * Now that we already used evsel->attr to ask the kernel to setup the
2746 * events, lets reuse evsel->attr.sample_max_stack as the limit in
2747 * trace__resolve_callchain(), allowing per-event max-stack settings
2748 * to override an explicitely set --max-stack global setting.
2750 evlist__for_each_entry(evlist, evsel) {
2751 if (evsel__has_callchain(evsel) &&
2752 evsel->attr.sample_max_stack == 0)
2753 evsel->attr.sample_max_stack = trace->max_stack;
2756 before = trace->nr_events;
2758 for (i = 0; i < evlist->nr_mmaps; i++) {
2759 union perf_event *event;
2760 struct perf_mmap *md;
2762 md = &evlist->mmap[i];
2763 if (perf_mmap__read_init(md) < 0)
2766 while ((event = perf_mmap__read_event(md)) != NULL) {
2767 struct perf_sample sample;
2771 err = perf_evlist__parse_sample(evlist, event, &sample);
2773 fprintf(trace->output, "Can't parse sample, err = %d, skipping...\n", err);
2777 trace__handle_event(trace, event, &sample);
2779 perf_mmap__consume(md);
2784 if (done && !draining) {
2785 perf_evlist__disable(evlist);
2789 perf_mmap__read_done(md);
2792 if (trace->nr_events == before) {
2793 int timeout = done ? 100 : -1;
2795 if (!draining && perf_evlist__poll(evlist, timeout) > 0) {
2796 if (perf_evlist__filter_pollfd(evlist, POLLERR | POLLHUP | POLLNVAL) == 0)
2806 thread__zput(trace->current);
2808 perf_evlist__disable(evlist);
2812 trace__fprintf_thread_summary(trace, trace->output);
2814 if (trace->show_tool_stats) {
2815 fprintf(trace->output, "Stats:\n "
2816 " vfs_getname : %" PRIu64 "\n"
2817 " proc_getname: %" PRIu64 "\n",
2818 trace->stats.vfs_getname,
2819 trace->stats.proc_getname);
2824 trace__symbols__exit(trace);
2826 perf_evlist__delete(evlist);
2827 cgroup__put(trace->cgroup);
2828 trace->evlist = NULL;
2829 trace->live = false;
2832 char errbuf[BUFSIZ];
2834 out_error_sched_stat_runtime:
2835 tracing_path__strerror_open_tp(errno, errbuf, sizeof(errbuf), "sched", "sched_stat_runtime");
2838 out_error_raw_syscalls:
2839 tracing_path__strerror_open_tp(errno, errbuf, sizeof(errbuf), "raw_syscalls", "sys_(enter|exit)");
2843 perf_evlist__strerror_mmap(evlist, errno, errbuf, sizeof(errbuf));
2847 perf_evlist__strerror_open(evlist, errno, errbuf, sizeof(errbuf));
2850 fprintf(trace->output, "%s\n", errbuf);
2851 goto out_delete_evlist;
2853 out_error_apply_filters:
2854 fprintf(trace->output,
2855 "Failed to set filter \"%s\" on event %s with %d (%s)\n",
2856 evsel->filter, perf_evsel__name(evsel), errno,
2857 str_error_r(errno, errbuf, sizeof(errbuf)));
2858 goto out_delete_evlist;
2861 fprintf(trace->output, "Not enough memory to run!\n");
2862 goto out_delete_evlist;
2865 fprintf(trace->output, "errno=%d,%s\n", errno, strerror(errno));
2866 goto out_delete_evlist;
2869 static int trace__replay(struct trace *trace)
2871 const struct perf_evsel_str_handler handlers[] = {
2872 { "probe:vfs_getname", trace__vfs_getname, },
2874 struct perf_data data = {
2878 .mode = PERF_DATA_MODE_READ,
2879 .force = trace->force,
2881 struct perf_session *session;
2882 struct perf_evsel *evsel;
2885 trace->tool.sample = trace__process_sample;
2886 trace->tool.mmap = perf_event__process_mmap;
2887 trace->tool.mmap2 = perf_event__process_mmap2;
2888 trace->tool.comm = perf_event__process_comm;
2889 trace->tool.exit = perf_event__process_exit;
2890 trace->tool.fork = perf_event__process_fork;
2891 trace->tool.attr = perf_event__process_attr;
2892 trace->tool.tracing_data = perf_event__process_tracing_data;
2893 trace->tool.build_id = perf_event__process_build_id;
2894 trace->tool.namespaces = perf_event__process_namespaces;
2896 trace->tool.ordered_events = true;
2897 trace->tool.ordering_requires_timestamps = true;
2899 /* add tid to output */
2900 trace->multiple_threads = true;
2902 session = perf_session__new(&data, false, &trace->tool);
2903 if (session == NULL)
2906 if (trace->opts.target.pid)
2907 symbol_conf.pid_list_str = strdup(trace->opts.target.pid);
2909 if (trace->opts.target.tid)
2910 symbol_conf.tid_list_str = strdup(trace->opts.target.tid);
2912 if (symbol__init(&session->header.env) < 0)
2915 trace->host = &session->machines.host;
2917 err = perf_session__set_tracepoints_handlers(session, handlers);
2921 evsel = perf_evlist__find_tracepoint_by_name(session->evlist,
2922 "raw_syscalls:sys_enter");
2923 /* older kernels have syscalls tp versus raw_syscalls */
2925 evsel = perf_evlist__find_tracepoint_by_name(session->evlist,
2926 "syscalls:sys_enter");
2929 (perf_evsel__init_raw_syscall_tp(evsel, trace__sys_enter) < 0 ||
2930 perf_evsel__init_sc_tp_ptr_field(evsel, args))) {
2931 pr_err("Error during initialize raw_syscalls:sys_enter event\n");
2935 evsel = perf_evlist__find_tracepoint_by_name(session->evlist,
2936 "raw_syscalls:sys_exit");
2938 evsel = perf_evlist__find_tracepoint_by_name(session->evlist,
2939 "syscalls:sys_exit");
2941 (perf_evsel__init_raw_syscall_tp(evsel, trace__sys_exit) < 0 ||
2942 perf_evsel__init_sc_tp_uint_field(evsel, ret))) {
2943 pr_err("Error during initialize raw_syscalls:sys_exit event\n");
2947 evlist__for_each_entry(session->evlist, evsel) {
2948 if (evsel->attr.type == PERF_TYPE_SOFTWARE &&
2949 (evsel->attr.config == PERF_COUNT_SW_PAGE_FAULTS_MAJ ||
2950 evsel->attr.config == PERF_COUNT_SW_PAGE_FAULTS_MIN ||
2951 evsel->attr.config == PERF_COUNT_SW_PAGE_FAULTS))
2952 evsel->handler = trace__pgfault;
2957 err = perf_session__process_events(session);
2959 pr_err("Failed to process events, error %d", err);
2961 else if (trace->summary)
2962 trace__fprintf_thread_summary(trace, trace->output);
2965 perf_session__delete(session);
2970 static size_t trace__fprintf_threads_header(FILE *fp)
2974 printed = fprintf(fp, "\n Summary of events:\n\n");
2979 DEFINE_RESORT_RB(syscall_stats, a->msecs > b->msecs,
2980 struct stats *stats;
2985 struct int_node *source = rb_entry(nd, struct int_node, rb_node);
2986 struct stats *stats = source->priv;
2988 entry->syscall = source->i;
2989 entry->stats = stats;
2990 entry->msecs = stats ? (u64)stats->n * (avg_stats(stats) / NSEC_PER_MSEC) : 0;
2993 static size_t thread__dump_stats(struct thread_trace *ttrace,
2994 struct trace *trace, FILE *fp)
2999 DECLARE_RESORT_RB_INTLIST(syscall_stats, ttrace->syscall_stats);
3001 if (syscall_stats == NULL)
3004 printed += fprintf(fp, "\n");
3006 printed += fprintf(fp, " syscall calls total min avg max stddev\n");
3007 printed += fprintf(fp, " (msec) (msec) (msec) (msec) (%%)\n");
3008 printed += fprintf(fp, " --------------- -------- --------- --------- --------- --------- ------\n");
3010 resort_rb__for_each_entry(nd, syscall_stats) {
3011 struct stats *stats = syscall_stats_entry->stats;
3013 double min = (double)(stats->min) / NSEC_PER_MSEC;
3014 double max = (double)(stats->max) / NSEC_PER_MSEC;
3015 double avg = avg_stats(stats);
3017 u64 n = (u64) stats->n;
3019 pct = avg ? 100.0 * stddev_stats(stats)/avg : 0.0;
3020 avg /= NSEC_PER_MSEC;
3022 sc = &trace->syscalls.table[syscall_stats_entry->syscall];
3023 printed += fprintf(fp, " %-15s", sc->name);
3024 printed += fprintf(fp, " %8" PRIu64 " %9.3f %9.3f %9.3f",
3025 n, syscall_stats_entry->msecs, min, avg);
3026 printed += fprintf(fp, " %9.3f %9.2f%%\n", max, pct);
3030 resort_rb__delete(syscall_stats);
3031 printed += fprintf(fp, "\n\n");
3036 static size_t trace__fprintf_thread(FILE *fp, struct thread *thread, struct trace *trace)
3039 struct thread_trace *ttrace = thread__priv(thread);
3045 ratio = (double)ttrace->nr_events / trace->nr_events * 100.0;
3047 printed += fprintf(fp, " %s (%d), ", thread__comm_str(thread), thread->tid);
3048 printed += fprintf(fp, "%lu events, ", ttrace->nr_events);
3049 printed += fprintf(fp, "%.1f%%", ratio);
3051 printed += fprintf(fp, ", %lu majfaults", ttrace->pfmaj);
3053 printed += fprintf(fp, ", %lu minfaults", ttrace->pfmin);
3055 printed += fprintf(fp, ", %.3f msec\n", ttrace->runtime_ms);
3056 else if (fputc('\n', fp) != EOF)
3059 printed += thread__dump_stats(ttrace, trace, fp);
3064 static unsigned long thread__nr_events(struct thread_trace *ttrace)
3066 return ttrace ? ttrace->nr_events : 0;
3069 DEFINE_RESORT_RB(threads, (thread__nr_events(a->thread->priv) < thread__nr_events(b->thread->priv)),
3070 struct thread *thread;
3073 entry->thread = rb_entry(nd, struct thread, rb_node);
3076 static size_t trace__fprintf_thread_summary(struct trace *trace, FILE *fp)
3078 size_t printed = trace__fprintf_threads_header(fp);
3082 for (i = 0; i < THREADS__TABLE_SIZE; i++) {
3083 DECLARE_RESORT_RB_MACHINE_THREADS(threads, trace->host, i);
3085 if (threads == NULL) {
3086 fprintf(fp, "%s", "Error sorting output by nr_events!\n");
3090 resort_rb__for_each_entry(nd, threads)
3091 printed += trace__fprintf_thread(fp, threads_entry->thread, trace);
3093 resort_rb__delete(threads);
3098 static int trace__set_duration(const struct option *opt, const char *str,
3099 int unset __maybe_unused)
3101 struct trace *trace = opt->value;
3103 trace->duration_filter = atof(str);
3107 static int trace__set_filter_pids(const struct option *opt, const char *str,
3108 int unset __maybe_unused)
3112 struct trace *trace = opt->value;
3114 * FIXME: introduce a intarray class, plain parse csv and create a
3115 * { int nr, int entries[] } struct...
3117 struct intlist *list = intlist__new(str);
3122 i = trace->filter_pids.nr = intlist__nr_entries(list) + 1;
3123 trace->filter_pids.entries = calloc(i, sizeof(pid_t));
3125 if (trace->filter_pids.entries == NULL)
3128 trace->filter_pids.entries[0] = getpid();
3130 for (i = 1; i < trace->filter_pids.nr; ++i)
3131 trace->filter_pids.entries[i] = intlist__entry(list, i - 1)->i;
3133 intlist__delete(list);
3139 static int trace__open_output(struct trace *trace, const char *filename)
3143 if (!stat(filename, &st) && st.st_size) {
3144 char oldname[PATH_MAX];
3146 scnprintf(oldname, sizeof(oldname), "%s.old", filename);
3148 rename(filename, oldname);
3151 trace->output = fopen(filename, "w");
3153 return trace->output == NULL ? -errno : 0;
3156 static int parse_pagefaults(const struct option *opt, const char *str,
3157 int unset __maybe_unused)
3159 int *trace_pgfaults = opt->value;
3161 if (strcmp(str, "all") == 0)
3162 *trace_pgfaults |= TRACE_PFMAJ | TRACE_PFMIN;
3163 else if (strcmp(str, "maj") == 0)
3164 *trace_pgfaults |= TRACE_PFMAJ;
3165 else if (strcmp(str, "min") == 0)
3166 *trace_pgfaults |= TRACE_PFMIN;
3173 static void evlist__set_evsel_handler(struct perf_evlist *evlist, void *handler)
3175 struct perf_evsel *evsel;
3177 evlist__for_each_entry(evlist, evsel)
3178 evsel->handler = handler;
3181 static int evlist__set_syscall_tp_fields(struct perf_evlist *evlist)
3183 struct perf_evsel *evsel;
3185 evlist__for_each_entry(evlist, evsel) {
3186 if (evsel->priv || !evsel->tp_format)
3189 if (strcmp(evsel->tp_format->system, "syscalls"))
3192 if (perf_evsel__init_syscall_tp(evsel))
3195 if (!strncmp(evsel->tp_format->name, "sys_enter_", 10)) {
3196 struct syscall_tp *sc = evsel->priv;
3198 if (__tp_field__init_ptr(&sc->args, sc->id.offset + sizeof(u64)))
3200 } else if (!strncmp(evsel->tp_format->name, "sys_exit_", 9)) {
3201 struct syscall_tp *sc = evsel->priv;
3203 if (__tp_field__init_uint(&sc->ret, sizeof(u64), sc->id.offset + sizeof(u64), evsel->needs_swap))
3212 * XXX: Hackish, just splitting the combined -e+--event (syscalls
3213 * (raw_syscalls:{sys_{enter,exit}} + events (tracepoints, HW, SW, etc) to use
3214 * existing facilities unchanged (trace->ev_qualifier + parse_options()).
3216 * It'd be better to introduce a parse_options() variant that would return a
3217 * list with the terms it didn't match to an event...
3219 static int trace__parse_events_option(const struct option *opt, const char *str,
3220 int unset __maybe_unused)
3222 struct trace *trace = (struct trace *)opt->value;
3223 const char *s = str;
3224 char *sep = NULL, *lists[2] = { NULL, NULL, };
3225 int len = strlen(str) + 1, err = -1, list, idx;
3226 char *strace_groups_dir = system_path(STRACE_GROUPS_DIR);
3227 char group_name[PATH_MAX];
3228 struct syscall_fmt *fmt;
3230 if (strace_groups_dir == NULL)
3235 trace->not_ev_qualifier = true;
3239 if ((sep = strchr(s, ',')) != NULL)
3243 if (syscalltbl__id(trace->sctbl, s) >= 0 ||
3244 syscalltbl__strglobmatch_first(trace->sctbl, s, &idx) >= 0) {
3249 fmt = syscall_fmt__find_by_alias(s);
3254 path__join(group_name, sizeof(group_name), strace_groups_dir, s);
3255 if (access(group_name, R_OK) == 0)
3260 sprintf(lists[list] + strlen(lists[list]), ",%s", s);
3262 lists[list] = malloc(len);
3263 if (lists[list] == NULL)
3265 strcpy(lists[list], s);
3275 if (lists[1] != NULL) {
3276 struct strlist_config slist_config = {
3277 .dirname = strace_groups_dir,
3280 trace->ev_qualifier = strlist__new(lists[1], &slist_config);
3281 if (trace->ev_qualifier == NULL) {
3282 fputs("Not enough memory to parse event qualifier", trace->output);
3286 if (trace__validate_ev_qualifier(trace))
3288 trace->trace_syscalls = true;
3294 struct option o = OPT_CALLBACK('e', "event", &trace->evlist, "event",
3295 "event selector. use 'perf list' to list available events",
3296 parse_events_option);
3297 err = parse_events_option(&o, lists[0], 0);
3306 static int trace__parse_cgroups(const struct option *opt, const char *str, int unset)
3308 struct trace *trace = opt->value;
3310 if (!list_empty(&trace->evlist->entries))
3311 return parse_cgroups(opt, str, unset);
3313 trace->cgroup = evlist__findnew_cgroup(trace->evlist, str);
3318 int cmd_trace(int argc, const char **argv)
3320 const char *trace_usage[] = {
3321 "perf trace [<options>] [<command>]",
3322 "perf trace [<options>] -- <command> [<options>]",
3323 "perf trace record [<options>] [<command>]",
3324 "perf trace record [<options>] -- <command> [<options>]",
3327 struct trace trace = {
3336 .user_freq = UINT_MAX,
3337 .user_interval = ULLONG_MAX,
3338 .no_buffering = true,
3339 .mmap_pages = UINT_MAX,
3340 .proc_map_timeout = 500,
3344 .trace_syscalls = false,
3345 .kernel_syscallchains = false,
3346 .max_stack = UINT_MAX,
3347 .max_events = ULONG_MAX,
3349 const char *output_name = NULL;
3350 const struct option trace_options[] = {
3351 OPT_CALLBACK('e', "event", &trace, "event",
3352 "event/syscall selector. use 'perf list' to list available events",
3353 trace__parse_events_option),
3354 OPT_BOOLEAN(0, "comm", &trace.show_comm,
3355 "show the thread COMM next to its id"),
3356 OPT_BOOLEAN(0, "tool_stats", &trace.show_tool_stats, "show tool stats"),
3357 OPT_CALLBACK(0, "expr", &trace, "expr", "list of syscalls/events to trace",
3358 trace__parse_events_option),
3359 OPT_STRING('o', "output", &output_name, "file", "output file name"),
3360 OPT_STRING('i', "input", &input_name, "file", "Analyze events in file"),
3361 OPT_STRING('p', "pid", &trace.opts.target.pid, "pid",
3362 "trace events on existing process id"),
3363 OPT_STRING('t', "tid", &trace.opts.target.tid, "tid",
3364 "trace events on existing thread id"),
3365 OPT_CALLBACK(0, "filter-pids", &trace, "CSV list of pids",
3366 "pids to filter (by the kernel)", trace__set_filter_pids),
3367 OPT_BOOLEAN('a', "all-cpus", &trace.opts.target.system_wide,
3368 "system-wide collection from all CPUs"),
3369 OPT_STRING('C', "cpu", &trace.opts.target.cpu_list, "cpu",
3370 "list of cpus to monitor"),
3371 OPT_BOOLEAN(0, "no-inherit", &trace.opts.no_inherit,
3372 "child tasks do not inherit counters"),
3373 OPT_CALLBACK('m', "mmap-pages", &trace.opts.mmap_pages, "pages",
3374 "number of mmap data pages",
3375 perf_evlist__parse_mmap_pages),
3376 OPT_STRING('u', "uid", &trace.opts.target.uid_str, "user",
3378 OPT_CALLBACK(0, "duration", &trace, "float",
3379 "show only events with duration > N.M ms",
3380 trace__set_duration),
3381 OPT_BOOLEAN(0, "sched", &trace.sched, "show blocking scheduler events"),
3382 OPT_INCR('v', "verbose", &verbose, "be more verbose"),
3383 OPT_BOOLEAN('T', "time", &trace.full_time,
3384 "Show full timestamp, not time relative to first start"),
3385 OPT_BOOLEAN(0, "failure", &trace.failure_only,
3386 "Show only syscalls that failed"),
3387 OPT_BOOLEAN('s', "summary", &trace.summary_only,
3388 "Show only syscall summary with statistics"),
3389 OPT_BOOLEAN('S', "with-summary", &trace.summary,
3390 "Show all syscalls and summary with statistics"),
3391 OPT_CALLBACK_DEFAULT('F', "pf", &trace.trace_pgfaults, "all|maj|min",
3392 "Trace pagefaults", parse_pagefaults, "maj"),
3393 OPT_BOOLEAN(0, "syscalls", &trace.trace_syscalls, "Trace syscalls"),
3394 OPT_BOOLEAN('f', "force", &trace.force, "don't complain, do it"),
3395 OPT_CALLBACK(0, "call-graph", &trace.opts,
3396 "record_mode[,record_size]", record_callchain_help,
3397 &record_parse_callchain_opt),
3398 OPT_BOOLEAN(0, "kernel-syscall-graph", &trace.kernel_syscallchains,
3399 "Show the kernel callchains on the syscall exit path"),
3400 OPT_ULONG(0, "max-events", &trace.max_events,
3401 "Set the maximum number of events to print, exit after that is reached. "),
3402 OPT_UINTEGER(0, "min-stack", &trace.min_stack,
3403 "Set the minimum stack depth when parsing the callchain, "
3404 "anything below the specified depth will be ignored."),
3405 OPT_UINTEGER(0, "max-stack", &trace.max_stack,
3406 "Set the maximum stack depth when parsing the callchain, "
3407 "anything beyond the specified depth will be ignored. "
3408 "Default: kernel.perf_event_max_stack or " __stringify(PERF_MAX_STACK_DEPTH)),
3409 OPT_BOOLEAN(0, "print-sample", &trace.print_sample,
3410 "print the PERF_RECORD_SAMPLE PERF_SAMPLE_ info, for debugging"),
3411 OPT_UINTEGER(0, "proc-map-timeout", &trace.opts.proc_map_timeout,
3412 "per thread proc mmap processing timeout in ms"),
3413 OPT_CALLBACK('G', "cgroup", &trace, "name", "monitor event in cgroup name only",
3414 trace__parse_cgroups),
3415 OPT_UINTEGER('D', "delay", &trace.opts.initial_delay,
3416 "ms to wait before starting measurement after program "
3420 bool __maybe_unused max_stack_user_set = true;
3421 bool mmap_pages_user_set = true;
3422 struct perf_evsel *evsel;
3423 const char * const trace_subcommands[] = { "record", NULL };
3427 signal(SIGSEGV, sighandler_dump_stack);
3428 signal(SIGFPE, sighandler_dump_stack);
3430 trace.evlist = perf_evlist__new();
3431 trace.sctbl = syscalltbl__new();
3433 if (trace.evlist == NULL || trace.sctbl == NULL) {
3434 pr_err("Not enough memory to run!\n");
3439 argc = parse_options_subcommand(argc, argv, trace_options, trace_subcommands,
3440 trace_usage, PARSE_OPT_STOP_AT_NON_OPTION);
3442 if ((nr_cgroups || trace.cgroup) && !trace.opts.target.system_wide) {
3443 usage_with_options_msg(trace_usage, trace_options,
3444 "cgroup monitoring only available in system-wide mode");
3447 evsel = bpf__setup_output_event(trace.evlist, "__augmented_syscalls__");
3448 if (IS_ERR(evsel)) {
3449 bpf__strerror_setup_output_event(trace.evlist, PTR_ERR(evsel), bf, sizeof(bf));
3450 pr_err("ERROR: Setup trace syscalls enter failed: %s\n", bf);
3455 trace.syscalls.events.augmented = evsel;
3457 err = bpf__setup_stdout(trace.evlist);
3459 bpf__strerror_setup_stdout(trace.evlist, err, bf, sizeof(bf));
3460 pr_err("ERROR: Setup BPF stdout failed: %s\n", bf);
3466 if (trace.trace_pgfaults) {
3467 trace.opts.sample_address = true;
3468 trace.opts.sample_time = true;
3471 if (trace.opts.mmap_pages == UINT_MAX)
3472 mmap_pages_user_set = false;
3474 if (trace.max_stack == UINT_MAX) {
3475 trace.max_stack = input_name ? PERF_MAX_STACK_DEPTH : sysctl__max_stack();
3476 max_stack_user_set = false;
3479 #ifdef HAVE_DWARF_UNWIND_SUPPORT
3480 if ((trace.min_stack || max_stack_user_set) && !callchain_param.enabled) {
3481 record_opts__parse_callchain(&trace.opts, &callchain_param, "dwarf", false);
3485 if (callchain_param.enabled) {
3486 if (!mmap_pages_user_set && geteuid() == 0)
3487 trace.opts.mmap_pages = perf_event_mlock_kb_in_pages() * 4;
3489 symbol_conf.use_callchain = true;
3492 if (trace.evlist->nr_entries > 0) {
3493 evlist__set_evsel_handler(trace.evlist, trace__event_handler);
3494 if (evlist__set_syscall_tp_fields(trace.evlist)) {
3495 perror("failed to set syscalls:* tracepoint fields");
3501 * If we are augmenting syscalls, then combine what we put in the
3502 * __augmented_syscalls__ BPF map with what is in the
3503 * syscalls:sys_exit_FOO tracepoints, i.e. just like we do without BPF,
3504 * combining raw_syscalls:sys_enter with raw_syscalls:sys_exit.
3506 * We'll switch to look at two BPF maps, one for sys_enter and the
3507 * other for sys_exit when we start augmenting the sys_exit paths with
3508 * buffers that are being copied from kernel to userspace, think 'read'
3511 if (trace.syscalls.events.augmented) {
3512 evsel = trace.syscalls.events.augmented;
3514 if (perf_evsel__init_augmented_syscall_tp(evsel) ||
3515 perf_evsel__init_augmented_syscall_tp_args(evsel))
3517 evsel->handler = trace__sys_enter;
3519 evlist__for_each_entry(trace.evlist, evsel) {
3520 bool raw_syscalls_sys_exit = strcmp(perf_evsel__name(evsel), "raw_syscalls:sys_exit") == 0;
3522 if (raw_syscalls_sys_exit) {
3523 trace.raw_augmented_syscalls = true;
3524 goto init_augmented_syscall_tp;
3527 if (strstarts(perf_evsel__name(evsel), "syscalls:sys_exit_")) {
3528 init_augmented_syscall_tp:
3529 perf_evsel__init_augmented_syscall_tp(evsel);
3530 perf_evsel__init_augmented_syscall_tp_ret(evsel);
3531 evsel->handler = trace__sys_exit;
3536 if ((argc >= 1) && (strcmp(argv[0], "record") == 0))
3537 return trace__record(&trace, argc-1, &argv[1]);
3539 /* summary_only implies summary option, but don't overwrite summary if set */
3540 if (trace.summary_only)
3541 trace.summary = trace.summary_only;
3543 if (!trace.trace_syscalls && !trace.trace_pgfaults &&
3544 trace.evlist->nr_entries == 0 /* Was --events used? */) {
3545 trace.trace_syscalls = true;
3548 if (output_name != NULL) {
3549 err = trace__open_output(&trace, output_name);
3551 perror("failed to create output file");
3556 err = target__validate(&trace.opts.target);
3558 target__strerror(&trace.opts.target, err, bf, sizeof(bf));
3559 fprintf(trace.output, "%s", bf);
3563 err = target__parse_uid(&trace.opts.target);
3565 target__strerror(&trace.opts.target, err, bf, sizeof(bf));
3566 fprintf(trace.output, "%s", bf);
3570 if (!argc && target__none(&trace.opts.target))
3571 trace.opts.target.system_wide = true;
3574 err = trace__replay(&trace);
3576 err = trace__run(&trace, argc, argv);
3579 if (output_name != NULL)
3580 fclose(trace.output);