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18#include <traceevent/event-parse.h>
19#include <api/fs/tracing_path.h>
20#include <bpf/bpf.h>
21#include "util/bpf_map.h"
22#include "builtin.h"
23#include "util/cgroup.h"
24#include "util/color.h"
25#include "util/config.h"
26#include "util/debug.h"
27#include "util/env.h"
28#include "util/event.h"
29#include "util/evlist.h"
30#include <subcmd/exec-cmd.h>
31#include "util/machine.h"
32#include "util/map.h"
33#include "util/symbol.h"
34#include "util/path.h"
35#include "util/session.h"
36#include "util/thread.h"
37#include <subcmd/parse-options.h>
38#include "util/strlist.h"
39#include "util/intlist.h"
40#include "util/thread_map.h"
41#include "util/stat.h"
42#include "trace/beauty/beauty.h"
43#include "trace-event.h"
44#include "util/parse-events.h"
45#include "util/bpf-loader.h"
46#include "callchain.h"
47#include "print_binary.h"
48#include "string2.h"
49#include "syscalltbl.h"
50#include "rb_resort.h"
51
52#include <errno.h>
53#include <inttypes.h>
54#include <poll.h>
55#include <signal.h>
56#include <stdlib.h>
57#include <string.h>
58#include <linux/err.h>
59#include <linux/filter.h>
60#include <linux/kernel.h>
61#include <linux/random.h>
62#include <linux/stringify.h>
63#include <linux/time64.h>
64#include <fcntl.h>
65#include <sys/sysmacros.h>
66
67#include "sane_ctype.h"
68
69#ifndef O_CLOEXEC
70# define O_CLOEXEC 02000000
71#endif
72
73#ifndef F_LINUX_SPECIFIC_BASE
74# define F_LINUX_SPECIFIC_BASE 1024
75#endif
76
77struct trace {
78 struct perf_tool tool;
79 struct syscalltbl *sctbl;
80 struct {
81 int max;
82 struct syscall *table;
83 struct bpf_map *map;
84 struct {
85 struct perf_evsel *sys_enter,
86 *sys_exit,
87 *augmented;
88 } events;
89 } syscalls;
90 struct {
91 struct bpf_map *map;
92 } dump;
93 struct record_opts opts;
94 struct perf_evlist *evlist;
95 struct machine *host;
96 struct thread *current;
97 struct cgroup *cgroup;
98 u64 base_time;
99 FILE *output;
100 unsigned long nr_events;
101 unsigned long nr_events_printed;
102 unsigned long max_events;
103 struct strlist *ev_qualifier;
104 struct {
105 size_t nr;
106 int *entries;
107 } ev_qualifier_ids;
108 struct {
109 size_t nr;
110 pid_t *entries;
111 struct bpf_map *map;
112 } filter_pids;
113 double duration_filter;
114 double runtime_ms;
115 struct {
116 u64 vfs_getname,
117 proc_getname;
118 } stats;
119 unsigned int max_stack;
120 unsigned int min_stack;
121 int raw_augmented_syscalls_args_size;
122 bool raw_augmented_syscalls;
123 bool sort_events;
124 bool not_ev_qualifier;
125 bool live;
126 bool full_time;
127 bool sched;
128 bool multiple_threads;
129 bool summary;
130 bool summary_only;
131 bool failure_only;
132 bool show_comm;
133 bool print_sample;
134 bool show_tool_stats;
135 bool trace_syscalls;
136 bool kernel_syscallchains;
137 s16 args_alignment;
138 bool show_tstamp;
139 bool show_duration;
140 bool show_zeros;
141 bool show_arg_names;
142 bool show_string_prefix;
143 bool force;
144 bool vfs_getname;
145 int trace_pgfaults;
146 struct {
147 struct ordered_events data;
148 u64 last;
149 } oe;
150};
151
152struct tp_field {
153 int offset;
154 union {
155 u64 (*integer)(struct tp_field *field, struct perf_sample *sample);
156 void *(*pointer)(struct tp_field *field, struct perf_sample *sample);
157 };
158};
159
160#define TP_UINT_FIELD(bits) \
161static u64 tp_field__u##bits(struct tp_field *field, struct perf_sample *sample) \
162{ \
163 u##bits value; \
164 memcpy(&value, sample->raw_data + field->offset, sizeof(value)); \
165 return value; \
166}
167
168TP_UINT_FIELD(8);
169TP_UINT_FIELD(16);
170TP_UINT_FIELD(32);
171TP_UINT_FIELD(64);
172
173#define TP_UINT_FIELD__SWAPPED(bits) \
174static u64 tp_field__swapped_u##bits(struct tp_field *field, struct perf_sample *sample) \
175{ \
176 u##bits value; \
177 memcpy(&value, sample->raw_data + field->offset, sizeof(value)); \
178 return bswap_##bits(value);\
179}
180
181TP_UINT_FIELD__SWAPPED(16);
182TP_UINT_FIELD__SWAPPED(32);
183TP_UINT_FIELD__SWAPPED(64);
184
185static int __tp_field__init_uint(struct tp_field *field, int size, int offset, bool needs_swap)
186{
187 field->offset = offset;
188
189 switch (size) {
190 case 1:
191 field->integer = tp_field__u8;
192 break;
193 case 2:
194 field->integer = needs_swap ? tp_field__swapped_u16 : tp_field__u16;
195 break;
196 case 4:
197 field->integer = needs_swap ? tp_field__swapped_u32 : tp_field__u32;
198 break;
199 case 8:
200 field->integer = needs_swap ? tp_field__swapped_u64 : tp_field__u64;
201 break;
202 default:
203 return -1;
204 }
205
206 return 0;
207}
208
209static int tp_field__init_uint(struct tp_field *field, struct tep_format_field *format_field, bool needs_swap)
210{
211 return __tp_field__init_uint(field, format_field->size, format_field->offset, needs_swap);
212}
213
214static void *tp_field__ptr(struct tp_field *field, struct perf_sample *sample)
215{
216 return sample->raw_data + field->offset;
217}
218
219static int __tp_field__init_ptr(struct tp_field *field, int offset)
220{
221 field->offset = offset;
222 field->pointer = tp_field__ptr;
223 return 0;
224}
225
226static int tp_field__init_ptr(struct tp_field *field, struct tep_format_field *format_field)
227{
228 return __tp_field__init_ptr(field, format_field->offset);
229}
230
231struct syscall_tp {
232 struct tp_field id;
233 union {
234 struct tp_field args, ret;
235 };
236};
237
238static int perf_evsel__init_tp_uint_field(struct perf_evsel *evsel,
239 struct tp_field *field,
240 const char *name)
241{
242 struct tep_format_field *format_field = perf_evsel__field(evsel, name);
243
244 if (format_field == NULL)
245 return -1;
246
247 return tp_field__init_uint(field, format_field, evsel->needs_swap);
248}
249
250#define perf_evsel__init_sc_tp_uint_field(evsel, name) \
251 ({ struct syscall_tp *sc = evsel->priv;\
252 perf_evsel__init_tp_uint_field(evsel, &sc->name, #name); })
253
254static int perf_evsel__init_tp_ptr_field(struct perf_evsel *evsel,
255 struct tp_field *field,
256 const char *name)
257{
258 struct tep_format_field *format_field = perf_evsel__field(evsel, name);
259
260 if (format_field == NULL)
261 return -1;
262
263 return tp_field__init_ptr(field, format_field);
264}
265
266#define perf_evsel__init_sc_tp_ptr_field(evsel, name) \
267 ({ struct syscall_tp *sc = evsel->priv;\
268 perf_evsel__init_tp_ptr_field(evsel, &sc->name, #name); })
269
270static void perf_evsel__delete_priv(struct perf_evsel *evsel)
271{
272 zfree(&evsel->priv);
273 perf_evsel__delete(evsel);
274}
275
276static int perf_evsel__init_syscall_tp(struct perf_evsel *evsel)
277{
278 struct syscall_tp *sc = evsel->priv = malloc(sizeof(struct syscall_tp));
279
280 if (evsel->priv != NULL) {
281 if (perf_evsel__init_tp_uint_field(evsel, &sc->id, "__syscall_nr") &&
282 perf_evsel__init_tp_uint_field(evsel, &sc->id, "nr"))
283 goto out_delete;
284 return 0;
285 }
286
287 return -ENOMEM;
288out_delete:
289 zfree(&evsel->priv);
290 return -ENOENT;
291}
292
293static int perf_evsel__init_augmented_syscall_tp(struct perf_evsel *evsel, struct perf_evsel *tp)
294{
295 struct syscall_tp *sc = evsel->priv = malloc(sizeof(struct syscall_tp));
296
297 if (evsel->priv != NULL) {
298 struct tep_format_field *syscall_id = perf_evsel__field(tp, "id");
299 if (syscall_id == NULL)
300 syscall_id = perf_evsel__field(tp, "__syscall_nr");
301 if (syscall_id == NULL)
302 goto out_delete;
303 if (__tp_field__init_uint(&sc->id, syscall_id->size, syscall_id->offset, evsel->needs_swap))
304 goto out_delete;
305
306 return 0;
307 }
308
309 return -ENOMEM;
310out_delete:
311 zfree(&evsel->priv);
312 return -EINVAL;
313}
314
315static int perf_evsel__init_augmented_syscall_tp_args(struct perf_evsel *evsel)
316{
317 struct syscall_tp *sc = evsel->priv;
318
319 return __tp_field__init_ptr(&sc->args, sc->id.offset + sizeof(u64));
320}
321
322static int perf_evsel__init_augmented_syscall_tp_ret(struct perf_evsel *evsel)
323{
324 struct syscall_tp *sc = evsel->priv;
325
326 return __tp_field__init_uint(&sc->ret, sizeof(u64), sc->id.offset + sizeof(u64), evsel->needs_swap);
327}
328
329static int perf_evsel__init_raw_syscall_tp(struct perf_evsel *evsel, void *handler)
330{
331 evsel->priv = malloc(sizeof(struct syscall_tp));
332 if (evsel->priv != NULL) {
333 if (perf_evsel__init_sc_tp_uint_field(evsel, id))
334 goto out_delete;
335
336 evsel->handler = handler;
337 return 0;
338 }
339
340 return -ENOMEM;
341
342out_delete:
343 zfree(&evsel->priv);
344 return -ENOENT;
345}
346
347static struct perf_evsel *perf_evsel__raw_syscall_newtp(const char *direction, void *handler)
348{
349 struct perf_evsel *evsel = perf_evsel__newtp("raw_syscalls", direction);
350
351
352 if (IS_ERR(evsel))
353 evsel = perf_evsel__newtp("syscalls", direction);
354
355 if (IS_ERR(evsel))
356 return NULL;
357
358 if (perf_evsel__init_raw_syscall_tp(evsel, handler))
359 goto out_delete;
360
361 return evsel;
362
363out_delete:
364 perf_evsel__delete_priv(evsel);
365 return NULL;
366}
367
368#define perf_evsel__sc_tp_uint(evsel, name, sample) \
369 ({ struct syscall_tp *fields = evsel->priv; \
370 fields->name.integer(&fields->name, sample); })
371
372#define perf_evsel__sc_tp_ptr(evsel, name, sample) \
373 ({ struct syscall_tp *fields = evsel->priv; \
374 fields->name.pointer(&fields->name, sample); })
375
376size_t strarray__scnprintf(struct strarray *sa, char *bf, size_t size, const char *intfmt, bool show_prefix, int val)
377{
378 int idx = val - sa->offset;
379
380 if (idx < 0 || idx >= sa->nr_entries || sa->entries[idx] == NULL) {
381 size_t printed = scnprintf(bf, size, intfmt, val);
382 if (show_prefix)
383 printed += scnprintf(bf + printed, size - printed, " /* %s??? */", sa->prefix);
384 return printed;
385 }
386
387 return scnprintf(bf, size, "%s%s", show_prefix ? sa->prefix : "", sa->entries[idx]);
388}
389
390static size_t __syscall_arg__scnprintf_strarray(char *bf, size_t size,
391 const char *intfmt,
392 struct syscall_arg *arg)
393{
394 return strarray__scnprintf(arg->parm, bf, size, intfmt, arg->show_string_prefix, arg->val);
395}
396
397static size_t syscall_arg__scnprintf_strarray(char *bf, size_t size,
398 struct syscall_arg *arg)
399{
400 return __syscall_arg__scnprintf_strarray(bf, size, "%d", arg);
401}
402
403#define SCA_STRARRAY syscall_arg__scnprintf_strarray
404
405size_t strarrays__scnprintf(struct strarrays *sas, char *bf, size_t size, const char *intfmt, bool show_prefix, int val)
406{
407 size_t printed;
408 int i;
409
410 for (i = 0; i < sas->nr_entries; ++i) {
411 struct strarray *sa = sas->entries[i];
412 int idx = val - sa->offset;
413
414 if (idx >= 0 && idx < sa->nr_entries) {
415 if (sa->entries[idx] == NULL)
416 break;
417 return scnprintf(bf, size, "%s%s", show_prefix ? sa->prefix : "", sa->entries[idx]);
418 }
419 }
420
421 printed = scnprintf(bf, size, intfmt, val);
422 if (show_prefix)
423 printed += scnprintf(bf + printed, size - printed, " /* %s??? */", sas->entries[0]->prefix);
424 return printed;
425}
426
427size_t syscall_arg__scnprintf_strarrays(char *bf, size_t size,
428 struct syscall_arg *arg)
429{
430 return strarrays__scnprintf(arg->parm, bf, size, "%d", arg->show_string_prefix, arg->val);
431}
432
433#ifndef AT_FDCWD
434#define AT_FDCWD -100
435#endif
436
437static size_t syscall_arg__scnprintf_fd_at(char *bf, size_t size,
438 struct syscall_arg *arg)
439{
440 int fd = arg->val;
441 const char *prefix = "AT_FD";
442
443 if (fd == AT_FDCWD)
444 return scnprintf(bf, size, "%s%s", arg->show_string_prefix ? prefix : "", "CWD");
445
446 return syscall_arg__scnprintf_fd(bf, size, arg);
447}
448
449#define SCA_FDAT syscall_arg__scnprintf_fd_at
450
451static size_t syscall_arg__scnprintf_close_fd(char *bf, size_t size,
452 struct syscall_arg *arg);
453
454#define SCA_CLOSE_FD syscall_arg__scnprintf_close_fd
455
456size_t syscall_arg__scnprintf_hex(char *bf, size_t size, struct syscall_arg *arg)
457{
458 return scnprintf(bf, size, "%#lx", arg->val);
459}
460
461size_t syscall_arg__scnprintf_ptr(char *bf, size_t size, struct syscall_arg *arg)
462{
463 if (arg->val == 0)
464 return scnprintf(bf, size, "NULL");
465 return syscall_arg__scnprintf_hex(bf, size, arg);
466}
467
468size_t syscall_arg__scnprintf_int(char *bf, size_t size, struct syscall_arg *arg)
469{
470 return scnprintf(bf, size, "%d", arg->val);
471}
472
473size_t syscall_arg__scnprintf_long(char *bf, size_t size, struct syscall_arg *arg)
474{
475 return scnprintf(bf, size, "%ld", arg->val);
476}
477
478static const char *bpf_cmd[] = {
479 "MAP_CREATE", "MAP_LOOKUP_ELEM", "MAP_UPDATE_ELEM", "MAP_DELETE_ELEM",
480 "MAP_GET_NEXT_KEY", "PROG_LOAD",
481};
482static DEFINE_STRARRAY(bpf_cmd, "BPF_");
483
484static const char *epoll_ctl_ops[] = { "ADD", "DEL", "MOD", };
485static DEFINE_STRARRAY_OFFSET(epoll_ctl_ops, "EPOLL_CTL_", 1);
486
487static const char *itimers[] = { "REAL", "VIRTUAL", "PROF", };
488static DEFINE_STRARRAY(itimers, "ITIMER_");
489
490static const char *keyctl_options[] = {
491 "GET_KEYRING_ID", "JOIN_SESSION_KEYRING", "UPDATE", "REVOKE", "CHOWN",
492 "SETPERM", "DESCRIBE", "CLEAR", "LINK", "UNLINK", "SEARCH", "READ",
493 "INSTANTIATE", "NEGATE", "SET_REQKEY_KEYRING", "SET_TIMEOUT",
494 "ASSUME_AUTHORITY", "GET_SECURITY", "SESSION_TO_PARENT", "REJECT",
495 "INSTANTIATE_IOV", "INVALIDATE", "GET_PERSISTENT",
496};
497static DEFINE_STRARRAY(keyctl_options, "KEYCTL_");
498
499static const char *whences[] = { "SET", "CUR", "END",
500#ifdef SEEK_DATA
501"DATA",
502#endif
503#ifdef SEEK_HOLE
504"HOLE",
505#endif
506};
507static DEFINE_STRARRAY(whences, "SEEK_");
508
509static const char *fcntl_cmds[] = {
510 "DUPFD", "GETFD", "SETFD", "GETFL", "SETFL", "GETLK", "SETLK",
511 "SETLKW", "SETOWN", "GETOWN", "SETSIG", "GETSIG", "GETLK64",
512 "SETLK64", "SETLKW64", "SETOWN_EX", "GETOWN_EX",
513 "GETOWNER_UIDS",
514};
515static DEFINE_STRARRAY(fcntl_cmds, "F_");
516
517static const char *fcntl_linux_specific_cmds[] = {
518 "SETLEASE", "GETLEASE", "NOTIFY", [5] = "CANCELLK", "DUPFD_CLOEXEC",
519 "SETPIPE_SZ", "GETPIPE_SZ", "ADD_SEALS", "GET_SEALS",
520 "GET_RW_HINT", "SET_RW_HINT", "GET_FILE_RW_HINT", "SET_FILE_RW_HINT",
521};
522
523static DEFINE_STRARRAY_OFFSET(fcntl_linux_specific_cmds, "F_", F_LINUX_SPECIFIC_BASE);
524
525static struct strarray *fcntl_cmds_arrays[] = {
526 &strarray__fcntl_cmds,
527 &strarray__fcntl_linux_specific_cmds,
528};
529
530static DEFINE_STRARRAYS(fcntl_cmds_arrays);
531
532static const char *rlimit_resources[] = {
533 "CPU", "FSIZE", "DATA", "STACK", "CORE", "RSS", "NPROC", "NOFILE",
534 "MEMLOCK", "AS", "LOCKS", "SIGPENDING", "MSGQUEUE", "NICE", "RTPRIO",
535 "RTTIME",
536};
537static DEFINE_STRARRAY(rlimit_resources, "RLIMIT_");
538
539static const char *sighow[] = { "BLOCK", "UNBLOCK", "SETMASK", };
540static DEFINE_STRARRAY(sighow, "SIG_");
541
542static const char *clockid[] = {
543 "REALTIME", "MONOTONIC", "PROCESS_CPUTIME_ID", "THREAD_CPUTIME_ID",
544 "MONOTONIC_RAW", "REALTIME_COARSE", "MONOTONIC_COARSE", "BOOTTIME",
545 "REALTIME_ALARM", "BOOTTIME_ALARM", "SGI_CYCLE", "TAI"
546};
547static DEFINE_STRARRAY(clockid, "CLOCK_");
548
549static size_t syscall_arg__scnprintf_access_mode(char *bf, size_t size,
550 struct syscall_arg *arg)
551{
552 bool show_prefix = arg->show_string_prefix;
553 const char *suffix = "_OK";
554 size_t printed = 0;
555 int mode = arg->val;
556
557 if (mode == F_OK)
558 return scnprintf(bf, size, "F%s", show_prefix ? suffix : "");
559#define P_MODE(n) \
560 if (mode & n##_OK) { \
561 printed += scnprintf(bf + printed, size - printed, "%s%s", #n, show_prefix ? suffix : ""); \
562 mode &= ~n##_OK; \
563 }
564
565 P_MODE(R);
566 P_MODE(W);
567 P_MODE(X);
568#undef P_MODE
569
570 if (mode)
571 printed += scnprintf(bf + printed, size - printed, "|%#x", mode);
572
573 return printed;
574}
575
576#define SCA_ACCMODE syscall_arg__scnprintf_access_mode
577
578static size_t syscall_arg__scnprintf_filename(char *bf, size_t size,
579 struct syscall_arg *arg);
580
581#define SCA_FILENAME syscall_arg__scnprintf_filename
582
583static size_t syscall_arg__scnprintf_pipe_flags(char *bf, size_t size,
584 struct syscall_arg *arg)
585{
586 bool show_prefix = arg->show_string_prefix;
587 const char *prefix = "O_";
588 int printed = 0, flags = arg->val;
589
590#define P_FLAG(n) \
591 if (flags & O_##n) { \
592 printed += scnprintf(bf + printed, size - printed, "%s%s%s", printed ? "|" : "", show_prefix ? prefix : "", #n); \
593 flags &= ~O_##n; \
594 }
595
596 P_FLAG(CLOEXEC);
597 P_FLAG(NONBLOCK);
598#undef P_FLAG
599
600 if (flags)
601 printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags);
602
603 return printed;
604}
605
606#define SCA_PIPE_FLAGS syscall_arg__scnprintf_pipe_flags
607
608#ifndef GRND_NONBLOCK
609#define GRND_NONBLOCK 0x0001
610#endif
611#ifndef GRND_RANDOM
612#define GRND_RANDOM 0x0002
613#endif
614
615static size_t syscall_arg__scnprintf_getrandom_flags(char *bf, size_t size,
616 struct syscall_arg *arg)
617{
618 bool show_prefix = arg->show_string_prefix;
619 const char *prefix = "GRND_";
620 int printed = 0, flags = arg->val;
621
622#define P_FLAG(n) \
623 if (flags & GRND_##n) { \
624 printed += scnprintf(bf + printed, size - printed, "%s%s%s", printed ? "|" : "", show_prefix ? prefix : "", #n); \
625 flags &= ~GRND_##n; \
626 }
627
628 P_FLAG(RANDOM);
629 P_FLAG(NONBLOCK);
630#undef P_FLAG
631
632 if (flags)
633 printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags);
634
635 return printed;
636}
637
638#define SCA_GETRANDOM_FLAGS syscall_arg__scnprintf_getrandom_flags
639
640#define STRARRAY(name, array) \
641 { .scnprintf = SCA_STRARRAY, \
642 .parm = &strarray__##array, }
643
644#include "trace/beauty/arch_errno_names.c"
645#include "trace/beauty/eventfd.c"
646#include "trace/beauty/futex_op.c"
647#include "trace/beauty/futex_val3.c"
648#include "trace/beauty/mmap.c"
649#include "trace/beauty/mode_t.c"
650#include "trace/beauty/msg_flags.c"
651#include "trace/beauty/open_flags.c"
652#include "trace/beauty/perf_event_open.c"
653#include "trace/beauty/pid.c"
654#include "trace/beauty/sched_policy.c"
655#include "trace/beauty/seccomp.c"
656#include "trace/beauty/signum.c"
657#include "trace/beauty/socket_type.c"
658#include "trace/beauty/waitid_options.c"
659
660struct syscall_arg_fmt {
661 size_t (*scnprintf)(char *bf, size_t size, struct syscall_arg *arg);
662 unsigned long (*mask_val)(struct syscall_arg *arg, unsigned long val);
663 void *parm;
664 const char *name;
665 bool show_zero;
666};
667
668static struct syscall_fmt {
669 const char *name;
670 const char *alias;
671 struct syscall_arg_fmt arg[6];
672 u8 nr_args;
673 bool errpid;
674 bool timeout;
675 bool hexret;
676} syscall_fmts[] = {
677 { .name = "access",
678 .arg = { [1] = { .scnprintf = SCA_ACCMODE, }, }, },
679 { .name = "arch_prctl",
680 .arg = { [0] = { .scnprintf = SCA_X86_ARCH_PRCTL_CODE, },
681 [1] = { .scnprintf = SCA_PTR, }, }, },
682 { .name = "bind",
683 .arg = { [1] = { .scnprintf = SCA_SOCKADDR, }, }, },
684 { .name = "bpf",
685 .arg = { [0] = STRARRAY(cmd, bpf_cmd), }, },
686 { .name = "brk", .hexret = true,
687 .arg = { [0] = { .scnprintf = SCA_PTR, }, }, },
688 { .name = "clock_gettime",
689 .arg = { [0] = STRARRAY(clk_id, clockid), }, },
690 { .name = "clone", .errpid = true, .nr_args = 5,
691 .arg = { [0] = { .name = "flags", .scnprintf = SCA_CLONE_FLAGS, },
692 [1] = { .name = "child_stack", .scnprintf = SCA_HEX, },
693 [2] = { .name = "parent_tidptr", .scnprintf = SCA_HEX, },
694 [3] = { .name = "child_tidptr", .scnprintf = SCA_HEX, },
695 [4] = { .name = "tls", .scnprintf = SCA_HEX, }, }, },
696 { .name = "close",
697 .arg = { [0] = { .scnprintf = SCA_CLOSE_FD, }, }, },
698 { .name = "connect",
699 .arg = { [1] = { .scnprintf = SCA_SOCKADDR, }, }, },
700 { .name = "epoll_ctl",
701 .arg = { [1] = STRARRAY(op, epoll_ctl_ops), }, },
702 { .name = "eventfd2",
703 .arg = { [1] = { .scnprintf = SCA_EFD_FLAGS, }, }, },
704 { .name = "fchmodat",
705 .arg = { [0] = { .scnprintf = SCA_FDAT, }, }, },
706 { .name = "fchownat",
707 .arg = { [0] = { .scnprintf = SCA_FDAT, }, }, },
708 { .name = "fcntl",
709 .arg = { [1] = { .scnprintf = SCA_FCNTL_CMD,
710 .parm = &strarrays__fcntl_cmds_arrays,
711 .show_zero = true, },
712 [2] = { .scnprintf = SCA_FCNTL_ARG, }, }, },
713 { .name = "flock",
714 .arg = { [1] = { .scnprintf = SCA_FLOCK, }, }, },
715 { .name = "fstat", .alias = "newfstat", },
716 { .name = "fstatat", .alias = "newfstatat", },
717 { .name = "futex",
718 .arg = { [1] = { .scnprintf = SCA_FUTEX_OP, },
719 [5] = { .scnprintf = SCA_FUTEX_VAL3, }, }, },
720 { .name = "futimesat",
721 .arg = { [0] = { .scnprintf = SCA_FDAT, }, }, },
722 { .name = "getitimer",
723 .arg = { [0] = STRARRAY(which, itimers), }, },
724 { .name = "getpid", .errpid = true, },
725 { .name = "getpgid", .errpid = true, },
726 { .name = "getppid", .errpid = true, },
727 { .name = "getrandom",
728 .arg = { [2] = { .scnprintf = SCA_GETRANDOM_FLAGS, }, }, },
729 { .name = "getrlimit",
730 .arg = { [0] = STRARRAY(resource, rlimit_resources), }, },
731 { .name = "gettid", .errpid = true, },
732 { .name = "ioctl",
733 .arg = {
734#if defined(__i386__) || defined(__x86_64__)
735
736
737
738 [1] = { .scnprintf = SCA_IOCTL_CMD, },
739 [2] = { .scnprintf = SCA_HEX, }, }, },
740#else
741 [2] = { .scnprintf = SCA_HEX, }, }, },
742#endif
743 { .name = "kcmp", .nr_args = 5,
744 .arg = { [0] = { .name = "pid1", .scnprintf = SCA_PID, },
745 [1] = { .name = "pid2", .scnprintf = SCA_PID, },
746 [2] = { .name = "type", .scnprintf = SCA_KCMP_TYPE, },
747 [3] = { .name = "idx1", .scnprintf = SCA_KCMP_IDX, },
748 [4] = { .name = "idx2", .scnprintf = SCA_KCMP_IDX, }, }, },
749 { .name = "keyctl",
750 .arg = { [0] = STRARRAY(option, keyctl_options), }, },
751 { .name = "kill",
752 .arg = { [1] = { .scnprintf = SCA_SIGNUM, }, }, },
753 { .name = "linkat",
754 .arg = { [0] = { .scnprintf = SCA_FDAT, }, }, },
755 { .name = "lseek",
756 .arg = { [2] = STRARRAY(whence, whences), }, },
757 { .name = "lstat", .alias = "newlstat", },
758 { .name = "madvise",
759 .arg = { [0] = { .scnprintf = SCA_HEX, },
760 [2] = { .scnprintf = SCA_MADV_BHV, }, }, },
761 { .name = "mkdirat",
762 .arg = { [0] = { .scnprintf = SCA_FDAT, }, }, },
763 { .name = "mknodat",
764 .arg = { [0] = { .scnprintf = SCA_FDAT, }, }, },
765 { .name = "mmap", .hexret = true,
766
767#if defined(__s390x__)
768 .alias = "old_mmap",
769#endif
770 .arg = { [2] = { .scnprintf = SCA_MMAP_PROT, },
771 [3] = { .scnprintf = SCA_MMAP_FLAGS, },
772 [5] = { .scnprintf = SCA_HEX, }, }, },
773 { .name = "mount",
774 .arg = { [0] = { .scnprintf = SCA_FILENAME, },
775 [3] = { .scnprintf = SCA_MOUNT_FLAGS,
776 .mask_val = SCAMV_MOUNT_FLAGS, }, }, },
777 { .name = "mprotect",
778 .arg = { [0] = { .scnprintf = SCA_HEX, },
779 [2] = { .scnprintf = SCA_MMAP_PROT, }, }, },
780 { .name = "mq_unlink",
781 .arg = { [0] = { .scnprintf = SCA_FILENAME, }, }, },
782 { .name = "mremap", .hexret = true,
783 .arg = { [3] = { .scnprintf = SCA_MREMAP_FLAGS, }, }, },
784 { .name = "name_to_handle_at",
785 .arg = { [0] = { .scnprintf = SCA_FDAT, }, }, },
786 { .name = "newfstatat",
787 .arg = { [0] = { .scnprintf = SCA_FDAT, }, }, },
788 { .name = "open",
789 .arg = { [1] = { .scnprintf = SCA_OPEN_FLAGS, }, }, },
790 { .name = "open_by_handle_at",
791 .arg = { [0] = { .scnprintf = SCA_FDAT, },
792 [2] = { .scnprintf = SCA_OPEN_FLAGS, }, }, },
793 { .name = "openat",
794 .arg = { [0] = { .scnprintf = SCA_FDAT, },
795 [2] = { .scnprintf = SCA_OPEN_FLAGS, }, }, },
796 { .name = "perf_event_open",
797 .arg = { [2] = { .scnprintf = SCA_INT, },
798 [3] = { .scnprintf = SCA_FD, },
799 [4] = { .scnprintf = SCA_PERF_FLAGS, }, }, },
800 { .name = "pipe2",
801 .arg = { [1] = { .scnprintf = SCA_PIPE_FLAGS, }, }, },
802 { .name = "pkey_alloc",
803 .arg = { [1] = { .scnprintf = SCA_PKEY_ALLOC_ACCESS_RIGHTS, }, }, },
804 { .name = "pkey_free",
805 .arg = { [0] = { .scnprintf = SCA_INT, }, }, },
806 { .name = "pkey_mprotect",
807 .arg = { [0] = { .scnprintf = SCA_HEX, },
808 [2] = { .scnprintf = SCA_MMAP_PROT, },
809 [3] = { .scnprintf = SCA_INT, }, }, },
810 { .name = "poll", .timeout = true, },
811 { .name = "ppoll", .timeout = true, },
812 { .name = "prctl",
813 .arg = { [0] = { .scnprintf = SCA_PRCTL_OPTION, },
814 [1] = { .scnprintf = SCA_PRCTL_ARG2, },
815 [2] = { .scnprintf = SCA_PRCTL_ARG3, }, }, },
816 { .name = "pread", .alias = "pread64", },
817 { .name = "preadv", .alias = "pread", },
818 { .name = "prlimit64",
819 .arg = { [1] = STRARRAY(resource, rlimit_resources), }, },
820 { .name = "pwrite", .alias = "pwrite64", },
821 { .name = "readlinkat",
822 .arg = { [0] = { .scnprintf = SCA_FDAT, }, }, },
823 { .name = "recvfrom",
824 .arg = { [3] = { .scnprintf = SCA_MSG_FLAGS, }, }, },
825 { .name = "recvmmsg",
826 .arg = { [3] = { .scnprintf = SCA_MSG_FLAGS, }, }, },
827 { .name = "recvmsg",
828 .arg = { [2] = { .scnprintf = SCA_MSG_FLAGS, }, }, },
829 { .name = "renameat",
830 .arg = { [0] = { .scnprintf = SCA_FDAT, },
831 [2] = { .scnprintf = SCA_FDAT, }, }, },
832 { .name = "renameat2",
833 .arg = { [0] = { .scnprintf = SCA_FDAT, },
834 [2] = { .scnprintf = SCA_FDAT, },
835 [4] = { .scnprintf = SCA_RENAMEAT2_FLAGS, }, }, },
836 { .name = "rt_sigaction",
837 .arg = { [0] = { .scnprintf = SCA_SIGNUM, }, }, },
838 { .name = "rt_sigprocmask",
839 .arg = { [0] = STRARRAY(how, sighow), }, },
840 { .name = "rt_sigqueueinfo",
841 .arg = { [1] = { .scnprintf = SCA_SIGNUM, }, }, },
842 { .name = "rt_tgsigqueueinfo",
843 .arg = { [2] = { .scnprintf = SCA_SIGNUM, }, }, },
844 { .name = "sched_setscheduler",
845 .arg = { [1] = { .scnprintf = SCA_SCHED_POLICY, }, }, },
846 { .name = "seccomp",
847 .arg = { [0] = { .scnprintf = SCA_SECCOMP_OP, },
848 [1] = { .scnprintf = SCA_SECCOMP_FLAGS, }, }, },
849 { .name = "select", .timeout = true, },
850 { .name = "sendmmsg",
851 .arg = { [3] = { .scnprintf = SCA_MSG_FLAGS, }, }, },
852 { .name = "sendmsg",
853 .arg = { [2] = { .scnprintf = SCA_MSG_FLAGS, }, }, },
854 { .name = "sendto",
855 .arg = { [3] = { .scnprintf = SCA_MSG_FLAGS, },
856 [4] = { .scnprintf = SCA_SOCKADDR, }, }, },
857 { .name = "set_tid_address", .errpid = true, },
858 { .name = "setitimer",
859 .arg = { [0] = STRARRAY(which, itimers), }, },
860 { .name = "setrlimit",
861 .arg = { [0] = STRARRAY(resource, rlimit_resources), }, },
862 { .name = "socket",
863 .arg = { [0] = STRARRAY(family, socket_families),
864 [1] = { .scnprintf = SCA_SK_TYPE, },
865 [2] = { .scnprintf = SCA_SK_PROTO, }, }, },
866 { .name = "socketpair",
867 .arg = { [0] = STRARRAY(family, socket_families),
868 [1] = { .scnprintf = SCA_SK_TYPE, },
869 [2] = { .scnprintf = SCA_SK_PROTO, }, }, },
870 { .name = "stat", .alias = "newstat", },
871 { .name = "statx",
872 .arg = { [0] = { .scnprintf = SCA_FDAT, },
873 [2] = { .scnprintf = SCA_STATX_FLAGS, } ,
874 [3] = { .scnprintf = SCA_STATX_MASK, }, }, },
875 { .name = "swapoff",
876 .arg = { [0] = { .scnprintf = SCA_FILENAME, }, }, },
877 { .name = "swapon",
878 .arg = { [0] = { .scnprintf = SCA_FILENAME, }, }, },
879 { .name = "symlinkat",
880 .arg = { [0] = { .scnprintf = SCA_FDAT, }, }, },
881 { .name = "tgkill",
882 .arg = { [2] = { .scnprintf = SCA_SIGNUM, }, }, },
883 { .name = "tkill",
884 .arg = { [1] = { .scnprintf = SCA_SIGNUM, }, }, },
885 { .name = "umount2", .alias = "umount",
886 .arg = { [0] = { .scnprintf = SCA_FILENAME, }, }, },
887 { .name = "uname", .alias = "newuname", },
888 { .name = "unlinkat",
889 .arg = { [0] = { .scnprintf = SCA_FDAT, }, }, },
890 { .name = "utimensat",
891 .arg = { [0] = { .scnprintf = SCA_FDAT, }, }, },
892 { .name = "wait4", .errpid = true,
893 .arg = { [2] = { .scnprintf = SCA_WAITID_OPTIONS, }, }, },
894 { .name = "waitid", .errpid = true,
895 .arg = { [3] = { .scnprintf = SCA_WAITID_OPTIONS, }, }, },
896};
897
898static int syscall_fmt__cmp(const void *name, const void *fmtp)
899{
900 const struct syscall_fmt *fmt = fmtp;
901 return strcmp(name, fmt->name);
902}
903
904static struct syscall_fmt *syscall_fmt__find(const char *name)
905{
906 const int nmemb = ARRAY_SIZE(syscall_fmts);
907 return bsearch(name, syscall_fmts, nmemb, sizeof(struct syscall_fmt), syscall_fmt__cmp);
908}
909
910static struct syscall_fmt *syscall_fmt__find_by_alias(const char *alias)
911{
912 int i, nmemb = ARRAY_SIZE(syscall_fmts);
913
914 for (i = 0; i < nmemb; ++i) {
915 if (syscall_fmts[i].alias && strcmp(syscall_fmts[i].alias, alias) == 0)
916 return &syscall_fmts[i];
917 }
918
919 return NULL;
920}
921
922
923
924
925
926
927struct syscall {
928 struct tep_event *tp_format;
929 int nr_args;
930 int args_size;
931 bool is_exit;
932 bool is_open;
933 struct tep_format_field *args;
934 const char *name;
935 struct syscall_fmt *fmt;
936 struct syscall_arg_fmt *arg_fmt;
937};
938
939struct bpf_map_syscall_entry {
940 bool enabled;
941};
942
943
944
945
946
947
948
949
950static size_t fprintf_duration(unsigned long t, bool calculated, FILE *fp)
951{
952 double duration = (double)t / NSEC_PER_MSEC;
953 size_t printed = fprintf(fp, "(");
954
955 if (!calculated)
956 printed += fprintf(fp, " ");
957 else if (duration >= 1.0)
958 printed += color_fprintf(fp, PERF_COLOR_RED, "%6.3f ms", duration);
959 else if (duration >= 0.01)
960 printed += color_fprintf(fp, PERF_COLOR_YELLOW, "%6.3f ms", duration);
961 else
962 printed += color_fprintf(fp, PERF_COLOR_NORMAL, "%6.3f ms", duration);
963 return printed + fprintf(fp, "): ");
964}
965
966
967
968
969
970
971
972
973struct thread_trace {
974 u64 entry_time;
975 bool entry_pending;
976 unsigned long nr_events;
977 unsigned long pfmaj, pfmin;
978 char *entry_str;
979 double runtime_ms;
980 size_t (*ret_scnprintf)(char *bf, size_t size, struct syscall_arg *arg);
981 struct {
982 unsigned long ptr;
983 short int entry_str_pos;
984 bool pending_open;
985 unsigned int namelen;
986 char *name;
987 } filename;
988 struct {
989 int max;
990 struct file *table;
991 } files;
992
993 struct intlist *syscall_stats;
994};
995
996static struct thread_trace *thread_trace__new(void)
997{
998 struct thread_trace *ttrace = zalloc(sizeof(struct thread_trace));
999
1000 if (ttrace)
1001 ttrace->files.max = -1;
1002
1003 ttrace->syscall_stats = intlist__new(NULL);
1004
1005 return ttrace;
1006}
1007
1008static struct thread_trace *thread__trace(struct thread *thread, FILE *fp)
1009{
1010 struct thread_trace *ttrace;
1011
1012 if (thread == NULL)
1013 goto fail;
1014
1015 if (thread__priv(thread) == NULL)
1016 thread__set_priv(thread, thread_trace__new());
1017
1018 if (thread__priv(thread) == NULL)
1019 goto fail;
1020
1021 ttrace = thread__priv(thread);
1022 ++ttrace->nr_events;
1023
1024 return ttrace;
1025fail:
1026 color_fprintf(fp, PERF_COLOR_RED,
1027 "WARNING: not enough memory, dropping samples!\n");
1028 return NULL;
1029}
1030
1031
1032void syscall_arg__set_ret_scnprintf(struct syscall_arg *arg,
1033 size_t (*ret_scnprintf)(char *bf, size_t size, struct syscall_arg *arg))
1034{
1035 struct thread_trace *ttrace = thread__priv(arg->thread);
1036
1037 ttrace->ret_scnprintf = ret_scnprintf;
1038}
1039
1040#define TRACE_PFMAJ (1 << 0)
1041#define TRACE_PFMIN (1 << 1)
1042
1043static const size_t trace__entry_str_size = 2048;
1044
1045static struct file *thread_trace__files_entry(struct thread_trace *ttrace, int fd)
1046{
1047 if (fd < 0)
1048 return NULL;
1049
1050 if (fd > ttrace->files.max) {
1051 struct file *nfiles = realloc(ttrace->files.table, (fd + 1) * sizeof(struct file));
1052
1053 if (nfiles == NULL)
1054 return NULL;
1055
1056 if (ttrace->files.max != -1) {
1057 memset(nfiles + ttrace->files.max + 1, 0,
1058 (fd - ttrace->files.max) * sizeof(struct file));
1059 } else {
1060 memset(nfiles, 0, (fd + 1) * sizeof(struct file));
1061 }
1062
1063 ttrace->files.table = nfiles;
1064 ttrace->files.max = fd;
1065 }
1066
1067 return ttrace->files.table + fd;
1068}
1069
1070struct file *thread__files_entry(struct thread *thread, int fd)
1071{
1072 return thread_trace__files_entry(thread__priv(thread), fd);
1073}
1074
1075static int trace__set_fd_pathname(struct thread *thread, int fd, const char *pathname)
1076{
1077 struct thread_trace *ttrace = thread__priv(thread);
1078 struct file *file = thread_trace__files_entry(ttrace, fd);
1079
1080 if (file != NULL) {
1081 struct stat st;
1082 if (stat(pathname, &st) == 0)
1083 file->dev_maj = major(st.st_rdev);
1084 file->pathname = strdup(pathname);
1085 if (file->pathname)
1086 return 0;
1087 }
1088
1089 return -1;
1090}
1091
1092static int thread__read_fd_path(struct thread *thread, int fd)
1093{
1094 char linkname[PATH_MAX], pathname[PATH_MAX];
1095 struct stat st;
1096 int ret;
1097
1098 if (thread->pid_ == thread->tid) {
1099 scnprintf(linkname, sizeof(linkname),
1100 "/proc/%d/fd/%d", thread->pid_, fd);
1101 } else {
1102 scnprintf(linkname, sizeof(linkname),
1103 "/proc/%d/task/%d/fd/%d", thread->pid_, thread->tid, fd);
1104 }
1105
1106 if (lstat(linkname, &st) < 0 || st.st_size + 1 > (off_t)sizeof(pathname))
1107 return -1;
1108
1109 ret = readlink(linkname, pathname, sizeof(pathname));
1110
1111 if (ret < 0 || ret > st.st_size)
1112 return -1;
1113
1114 pathname[ret] = '\0';
1115 return trace__set_fd_pathname(thread, fd, pathname);
1116}
1117
1118static const char *thread__fd_path(struct thread *thread, int fd,
1119 struct trace *trace)
1120{
1121 struct thread_trace *ttrace = thread__priv(thread);
1122
1123 if (ttrace == NULL)
1124 return NULL;
1125
1126 if (fd < 0)
1127 return NULL;
1128
1129 if ((fd > ttrace->files.max || ttrace->files.table[fd].pathname == NULL)) {
1130 if (!trace->live)
1131 return NULL;
1132 ++trace->stats.proc_getname;
1133 if (thread__read_fd_path(thread, fd))
1134 return NULL;
1135 }
1136
1137 return ttrace->files.table[fd].pathname;
1138}
1139
1140size_t syscall_arg__scnprintf_fd(char *bf, size_t size, struct syscall_arg *arg)
1141{
1142 int fd = arg->val;
1143 size_t printed = scnprintf(bf, size, "%d", fd);
1144 const char *path = thread__fd_path(arg->thread, fd, arg->trace);
1145
1146 if (path)
1147 printed += scnprintf(bf + printed, size - printed, "<%s>", path);
1148
1149 return printed;
1150}
1151
1152size_t pid__scnprintf_fd(struct trace *trace, pid_t pid, int fd, char *bf, size_t size)
1153{
1154 size_t printed = scnprintf(bf, size, "%d", fd);
1155 struct thread *thread = machine__find_thread(trace->host, pid, pid);
1156
1157 if (thread) {
1158 const char *path = thread__fd_path(thread, fd, trace);
1159
1160 if (path)
1161 printed += scnprintf(bf + printed, size - printed, "<%s>", path);
1162
1163 thread__put(thread);
1164 }
1165
1166 return printed;
1167}
1168
1169static size_t syscall_arg__scnprintf_close_fd(char *bf, size_t size,
1170 struct syscall_arg *arg)
1171{
1172 int fd = arg->val;
1173 size_t printed = syscall_arg__scnprintf_fd(bf, size, arg);
1174 struct thread_trace *ttrace = thread__priv(arg->thread);
1175
1176 if (ttrace && fd >= 0 && fd <= ttrace->files.max)
1177 zfree(&ttrace->files.table[fd].pathname);
1178
1179 return printed;
1180}
1181
1182static void thread__set_filename_pos(struct thread *thread, const char *bf,
1183 unsigned long ptr)
1184{
1185 struct thread_trace *ttrace = thread__priv(thread);
1186
1187 ttrace->filename.ptr = ptr;
1188 ttrace->filename.entry_str_pos = bf - ttrace->entry_str;
1189}
1190
1191static size_t syscall_arg__scnprintf_augmented_string(struct syscall_arg *arg, char *bf, size_t size)
1192{
1193 struct augmented_arg *augmented_arg = arg->augmented.args;
1194
1195 return scnprintf(bf, size, "\"%.*s\"", augmented_arg->size, augmented_arg->value);
1196}
1197
1198static size_t syscall_arg__scnprintf_filename(char *bf, size_t size,
1199 struct syscall_arg *arg)
1200{
1201 unsigned long ptr = arg->val;
1202
1203 if (arg->augmented.args)
1204 return syscall_arg__scnprintf_augmented_string(arg, bf, size);
1205
1206 if (!arg->trace->vfs_getname)
1207 return scnprintf(bf, size, "%#x", ptr);
1208
1209 thread__set_filename_pos(arg->thread, bf, ptr);
1210 return 0;
1211}
1212
1213static bool trace__filter_duration(struct trace *trace, double t)
1214{
1215 return t < (trace->duration_filter * NSEC_PER_MSEC);
1216}
1217
1218static size_t __trace__fprintf_tstamp(struct trace *trace, u64 tstamp, FILE *fp)
1219{
1220 double ts = (double)(tstamp - trace->base_time) / NSEC_PER_MSEC;
1221
1222 return fprintf(fp, "%10.3f ", ts);
1223}
1224
1225
1226
1227
1228
1229
1230
1231static size_t trace__fprintf_tstamp(struct trace *trace, u64 tstamp, FILE *fp)
1232{
1233 if (tstamp > 0)
1234 return __trace__fprintf_tstamp(trace, tstamp, fp);
1235
1236 return fprintf(fp, " ? ");
1237}
1238
1239static bool done = false;
1240static bool interrupted = false;
1241
1242static void sig_handler(int sig)
1243{
1244 done = true;
1245 interrupted = sig == SIGINT;
1246}
1247
1248static size_t trace__fprintf_comm_tid(struct trace *trace, struct thread *thread, FILE *fp)
1249{
1250 size_t printed = 0;
1251
1252 if (trace->multiple_threads) {
1253 if (trace->show_comm)
1254 printed += fprintf(fp, "%.14s/", thread__comm_str(thread));
1255 printed += fprintf(fp, "%d ", thread->tid);
1256 }
1257
1258 return printed;
1259}
1260
1261static size_t trace__fprintf_entry_head(struct trace *trace, struct thread *thread,
1262 u64 duration, bool duration_calculated, u64 tstamp, FILE *fp)
1263{
1264 size_t printed = 0;
1265
1266 if (trace->show_tstamp)
1267 printed = trace__fprintf_tstamp(trace, tstamp, fp);
1268 if (trace->show_duration)
1269 printed += fprintf_duration(duration, duration_calculated, fp);
1270 return printed + trace__fprintf_comm_tid(trace, thread, fp);
1271}
1272
1273static int trace__process_event(struct trace *trace, struct machine *machine,
1274 union perf_event *event, struct perf_sample *sample)
1275{
1276 int ret = 0;
1277
1278 switch (event->header.type) {
1279 case PERF_RECORD_LOST:
1280 color_fprintf(trace->output, PERF_COLOR_RED,
1281 "LOST %" PRIu64 " events!\n", event->lost.lost);
1282 ret = machine__process_lost_event(machine, event, sample);
1283 break;
1284 default:
1285 ret = machine__process_event(machine, event, sample);
1286 break;
1287 }
1288
1289 return ret;
1290}
1291
1292static int trace__tool_process(struct perf_tool *tool,
1293 union perf_event *event,
1294 struct perf_sample *sample,
1295 struct machine *machine)
1296{
1297 struct trace *trace = container_of(tool, struct trace, tool);
1298 return trace__process_event(trace, machine, event, sample);
1299}
1300
1301static char *trace__machine__resolve_kernel_addr(void *vmachine, unsigned long long *addrp, char **modp)
1302{
1303 struct machine *machine = vmachine;
1304
1305 if (machine->kptr_restrict_warned)
1306 return NULL;
1307
1308 if (symbol_conf.kptr_restrict) {
1309 pr_warning("Kernel address maps (/proc/{kallsyms,modules}) are restricted.\n\n"
1310 "Check /proc/sys/kernel/kptr_restrict.\n\n"
1311 "Kernel samples will not be resolved.\n");
1312 machine->kptr_restrict_warned = true;
1313 return NULL;
1314 }
1315
1316 return machine__resolve_kernel_addr(vmachine, addrp, modp);
1317}
1318
1319static int trace__symbols_init(struct trace *trace, struct perf_evlist *evlist)
1320{
1321 int err = symbol__init(NULL);
1322
1323 if (err)
1324 return err;
1325
1326 trace->host = machine__new_host();
1327 if (trace->host == NULL)
1328 return -ENOMEM;
1329
1330 err = trace_event__register_resolver(trace->host, trace__machine__resolve_kernel_addr);
1331 if (err < 0)
1332 goto out;
1333
1334 err = __machine__synthesize_threads(trace->host, &trace->tool, &trace->opts.target,
1335 evlist->threads, trace__tool_process, false,
1336 1);
1337out:
1338 if (err)
1339 symbol__exit();
1340
1341 return err;
1342}
1343
1344static void trace__symbols__exit(struct trace *trace)
1345{
1346 machine__exit(trace->host);
1347 trace->host = NULL;
1348
1349 symbol__exit();
1350}
1351
1352static int syscall__alloc_arg_fmts(struct syscall *sc, int nr_args)
1353{
1354 int idx;
1355
1356 if (nr_args == 6 && sc->fmt && sc->fmt->nr_args != 0)
1357 nr_args = sc->fmt->nr_args;
1358
1359 sc->arg_fmt = calloc(nr_args, sizeof(*sc->arg_fmt));
1360 if (sc->arg_fmt == NULL)
1361 return -1;
1362
1363 for (idx = 0; idx < nr_args; ++idx) {
1364 if (sc->fmt)
1365 sc->arg_fmt[idx] = sc->fmt->arg[idx];
1366 }
1367
1368 sc->nr_args = nr_args;
1369 return 0;
1370}
1371
1372static int syscall__set_arg_fmts(struct syscall *sc)
1373{
1374 struct tep_format_field *field, *last_field = NULL;
1375 int idx = 0, len;
1376
1377 for (field = sc->args; field; field = field->next, ++idx) {
1378 last_field = field;
1379
1380 if (sc->fmt && sc->fmt->arg[idx].scnprintf)
1381 continue;
1382
1383 if (strcmp(field->type, "const char *") == 0 &&
1384 (strcmp(field->name, "filename") == 0 ||
1385 strcmp(field->name, "path") == 0 ||
1386 strcmp(field->name, "pathname") == 0))
1387 sc->arg_fmt[idx].scnprintf = SCA_FILENAME;
1388 else if ((field->flags & TEP_FIELD_IS_POINTER) || strstr(field->name, "addr"))
1389 sc->arg_fmt[idx].scnprintf = SCA_PTR;
1390 else if (strcmp(field->type, "pid_t") == 0)
1391 sc->arg_fmt[idx].scnprintf = SCA_PID;
1392 else if (strcmp(field->type, "umode_t") == 0)
1393 sc->arg_fmt[idx].scnprintf = SCA_MODE_T;
1394 else if ((strcmp(field->type, "int") == 0 ||
1395 strcmp(field->type, "unsigned int") == 0 ||
1396 strcmp(field->type, "long") == 0) &&
1397 (len = strlen(field->name)) >= 2 &&
1398 strcmp(field->name + len - 2, "fd") == 0) {
1399
1400
1401
1402
1403
1404
1405
1406 sc->arg_fmt[idx].scnprintf = SCA_FD;
1407 }
1408 }
1409
1410 if (last_field)
1411 sc->args_size = last_field->offset + last_field->size;
1412
1413 return 0;
1414}
1415
1416static int trace__read_syscall_info(struct trace *trace, int id)
1417{
1418 char tp_name[128];
1419 struct syscall *sc;
1420 const char *name = syscalltbl__name(trace->sctbl, id);
1421
1422 if (name == NULL)
1423 return -1;
1424
1425 if (id > trace->syscalls.max) {
1426 struct syscall *nsyscalls = realloc(trace->syscalls.table, (id + 1) * sizeof(*sc));
1427
1428 if (nsyscalls == NULL)
1429 return -1;
1430
1431 if (trace->syscalls.max != -1) {
1432 memset(nsyscalls + trace->syscalls.max + 1, 0,
1433 (id - trace->syscalls.max) * sizeof(*sc));
1434 } else {
1435 memset(nsyscalls, 0, (id + 1) * sizeof(*sc));
1436 }
1437
1438 trace->syscalls.table = nsyscalls;
1439 trace->syscalls.max = id;
1440 }
1441
1442 sc = trace->syscalls.table + id;
1443 sc->name = name;
1444
1445 sc->fmt = syscall_fmt__find(sc->name);
1446
1447 snprintf(tp_name, sizeof(tp_name), "sys_enter_%s", sc->name);
1448 sc->tp_format = trace_event__tp_format("syscalls", tp_name);
1449
1450 if (IS_ERR(sc->tp_format) && sc->fmt && sc->fmt->alias) {
1451 snprintf(tp_name, sizeof(tp_name), "sys_enter_%s", sc->fmt->alias);
1452 sc->tp_format = trace_event__tp_format("syscalls", tp_name);
1453 }
1454
1455 if (syscall__alloc_arg_fmts(sc, IS_ERR(sc->tp_format) ? 6 : sc->tp_format->format.nr_fields))
1456 return -1;
1457
1458 if (IS_ERR(sc->tp_format))
1459 return -1;
1460
1461 sc->args = sc->tp_format->format.fields;
1462
1463
1464
1465
1466
1467 if (sc->args && (!strcmp(sc->args->name, "__syscall_nr") || !strcmp(sc->args->name, "nr"))) {
1468 sc->args = sc->args->next;
1469 --sc->nr_args;
1470 }
1471
1472 sc->is_exit = !strcmp(name, "exit_group") || !strcmp(name, "exit");
1473 sc->is_open = !strcmp(name, "open") || !strcmp(name, "openat");
1474
1475 return syscall__set_arg_fmts(sc);
1476}
1477
1478static int trace__validate_ev_qualifier(struct trace *trace)
1479{
1480 int err = 0, i;
1481 size_t nr_allocated;
1482 struct str_node *pos;
1483
1484 trace->ev_qualifier_ids.nr = strlist__nr_entries(trace->ev_qualifier);
1485 trace->ev_qualifier_ids.entries = malloc(trace->ev_qualifier_ids.nr *
1486 sizeof(trace->ev_qualifier_ids.entries[0]));
1487
1488 if (trace->ev_qualifier_ids.entries == NULL) {
1489 fputs("Error:\tNot enough memory for allocating events qualifier ids\n",
1490 trace->output);
1491 err = -EINVAL;
1492 goto out;
1493 }
1494
1495 nr_allocated = trace->ev_qualifier_ids.nr;
1496 i = 0;
1497
1498 strlist__for_each_entry(pos, trace->ev_qualifier) {
1499 const char *sc = pos->s;
1500 int id = syscalltbl__id(trace->sctbl, sc), match_next = -1;
1501
1502 if (id < 0) {
1503 id = syscalltbl__strglobmatch_first(trace->sctbl, sc, &match_next);
1504 if (id >= 0)
1505 goto matches;
1506
1507 if (err == 0) {
1508 fputs("Error:\tInvalid syscall ", trace->output);
1509 err = -EINVAL;
1510 } else {
1511 fputs(", ", trace->output);
1512 }
1513
1514 fputs(sc, trace->output);
1515 }
1516matches:
1517 trace->ev_qualifier_ids.entries[i++] = id;
1518 if (match_next == -1)
1519 continue;
1520
1521 while (1) {
1522 id = syscalltbl__strglobmatch_next(trace->sctbl, sc, &match_next);
1523 if (id < 0)
1524 break;
1525 if (nr_allocated == trace->ev_qualifier_ids.nr) {
1526 void *entries;
1527
1528 nr_allocated += 8;
1529 entries = realloc(trace->ev_qualifier_ids.entries,
1530 nr_allocated * sizeof(trace->ev_qualifier_ids.entries[0]));
1531 if (entries == NULL) {
1532 err = -ENOMEM;
1533 fputs("\nError:\t Not enough memory for parsing\n", trace->output);
1534 goto out_free;
1535 }
1536 trace->ev_qualifier_ids.entries = entries;
1537 }
1538 trace->ev_qualifier_ids.nr++;
1539 trace->ev_qualifier_ids.entries[i++] = id;
1540 }
1541 }
1542
1543 if (err < 0) {
1544 fputs("\nHint:\ttry 'perf list syscalls:sys_enter_*'"
1545 "\nHint:\tand: 'man syscalls'\n", trace->output);
1546out_free:
1547 zfree(&trace->ev_qualifier_ids.entries);
1548 trace->ev_qualifier_ids.nr = 0;
1549 }
1550out:
1551 return err;
1552}
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562unsigned long syscall_arg__val(struct syscall_arg *arg, u8 idx)
1563{
1564 unsigned long val;
1565 unsigned char *p = arg->args + sizeof(unsigned long) * idx;
1566
1567 memcpy(&val, p, sizeof(val));
1568 return val;
1569}
1570
1571static size_t syscall__scnprintf_name(struct syscall *sc, char *bf, size_t size,
1572 struct syscall_arg *arg)
1573{
1574 if (sc->arg_fmt && sc->arg_fmt[arg->idx].name)
1575 return scnprintf(bf, size, "%s: ", sc->arg_fmt[arg->idx].name);
1576
1577 return scnprintf(bf, size, "arg%d: ", arg->idx);
1578}
1579
1580
1581
1582
1583
1584
1585static unsigned long syscall__mask_val(struct syscall *sc, struct syscall_arg *arg, unsigned long val)
1586{
1587 if (sc->arg_fmt && sc->arg_fmt[arg->idx].mask_val)
1588 return sc->arg_fmt[arg->idx].mask_val(arg, val);
1589
1590 return val;
1591}
1592
1593static size_t syscall__scnprintf_val(struct syscall *sc, char *bf, size_t size,
1594 struct syscall_arg *arg, unsigned long val)
1595{
1596 if (sc->arg_fmt && sc->arg_fmt[arg->idx].scnprintf) {
1597 arg->val = val;
1598 if (sc->arg_fmt[arg->idx].parm)
1599 arg->parm = sc->arg_fmt[arg->idx].parm;
1600 return sc->arg_fmt[arg->idx].scnprintf(bf, size, arg);
1601 }
1602 return scnprintf(bf, size, "%ld", val);
1603}
1604
1605static size_t syscall__scnprintf_args(struct syscall *sc, char *bf, size_t size,
1606 unsigned char *args, void *augmented_args, int augmented_args_size,
1607 struct trace *trace, struct thread *thread)
1608{
1609 size_t printed = 0;
1610 unsigned long val;
1611 u8 bit = 1;
1612 struct syscall_arg arg = {
1613 .args = args,
1614 .augmented = {
1615 .size = augmented_args_size,
1616 .args = augmented_args,
1617 },
1618 .idx = 0,
1619 .mask = 0,
1620 .trace = trace,
1621 .thread = thread,
1622 .show_string_prefix = trace->show_string_prefix,
1623 };
1624 struct thread_trace *ttrace = thread__priv(thread);
1625
1626
1627
1628
1629
1630
1631 ttrace->ret_scnprintf = NULL;
1632
1633 if (sc->args != NULL) {
1634 struct tep_format_field *field;
1635
1636 for (field = sc->args; field;
1637 field = field->next, ++arg.idx, bit <<= 1) {
1638 if (arg.mask & bit)
1639 continue;
1640
1641 val = syscall_arg__val(&arg, arg.idx);
1642
1643
1644
1645
1646 val = syscall__mask_val(sc, &arg, val);
1647
1648
1649
1650
1651
1652
1653 if (val == 0 &&
1654 !trace->show_zeros &&
1655 !(sc->arg_fmt &&
1656 (sc->arg_fmt[arg.idx].show_zero ||
1657 sc->arg_fmt[arg.idx].scnprintf == SCA_STRARRAY ||
1658 sc->arg_fmt[arg.idx].scnprintf == SCA_STRARRAYS) &&
1659 sc->arg_fmt[arg.idx].parm))
1660 continue;
1661
1662 printed += scnprintf(bf + printed, size - printed, "%s", printed ? ", " : "");
1663
1664 if (trace->show_arg_names)
1665 printed += scnprintf(bf + printed, size - printed, "%s: ", field->name);
1666
1667 printed += syscall__scnprintf_val(sc, bf + printed, size - printed, &arg, val);
1668 }
1669 } else if (IS_ERR(sc->tp_format)) {
1670
1671
1672
1673
1674
1675 while (arg.idx < sc->nr_args) {
1676 if (arg.mask & bit)
1677 goto next_arg;
1678 val = syscall_arg__val(&arg, arg.idx);
1679 if (printed)
1680 printed += scnprintf(bf + printed, size - printed, ", ");
1681 printed += syscall__scnprintf_name(sc, bf + printed, size - printed, &arg);
1682 printed += syscall__scnprintf_val(sc, bf + printed, size - printed, &arg, val);
1683next_arg:
1684 ++arg.idx;
1685 bit <<= 1;
1686 }
1687 }
1688
1689 return printed;
1690}
1691
1692typedef int (*tracepoint_handler)(struct trace *trace, struct perf_evsel *evsel,
1693 union perf_event *event,
1694 struct perf_sample *sample);
1695
1696static struct syscall *trace__syscall_info(struct trace *trace,
1697 struct perf_evsel *evsel, int id)
1698{
1699
1700 if (id < 0) {
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712 if (verbose > 1) {
1713 static u64 n;
1714 fprintf(trace->output, "Invalid syscall %d id, skipping (%s, %" PRIu64 ") ...\n",
1715 id, perf_evsel__name(evsel), ++n);
1716 }
1717 return NULL;
1718 }
1719
1720 if ((id > trace->syscalls.max || trace->syscalls.table[id].name == NULL) &&
1721 trace__read_syscall_info(trace, id))
1722 goto out_cant_read;
1723
1724 if ((id > trace->syscalls.max || trace->syscalls.table[id].name == NULL))
1725 goto out_cant_read;
1726
1727 return &trace->syscalls.table[id];
1728
1729out_cant_read:
1730 if (verbose > 0) {
1731 fprintf(trace->output, "Problems reading syscall %d", id);
1732 if (id <= trace->syscalls.max && trace->syscalls.table[id].name != NULL)
1733 fprintf(trace->output, "(%s)", trace->syscalls.table[id].name);
1734 fputs(" information\n", trace->output);
1735 }
1736 return NULL;
1737}
1738
1739static void thread__update_stats(struct thread_trace *ttrace,
1740 int id, struct perf_sample *sample)
1741{
1742 struct int_node *inode;
1743 struct stats *stats;
1744 u64 duration = 0;
1745
1746 inode = intlist__findnew(ttrace->syscall_stats, id);
1747 if (inode == NULL)
1748 return;
1749
1750 stats = inode->priv;
1751 if (stats == NULL) {
1752 stats = malloc(sizeof(struct stats));
1753 if (stats == NULL)
1754 return;
1755 init_stats(stats);
1756 inode->priv = stats;
1757 }
1758
1759 if (ttrace->entry_time && sample->time > ttrace->entry_time)
1760 duration = sample->time - ttrace->entry_time;
1761
1762 update_stats(stats, duration);
1763}
1764
1765static int trace__printf_interrupted_entry(struct trace *trace)
1766{
1767 struct thread_trace *ttrace;
1768 size_t printed;
1769 int len;
1770
1771 if (trace->failure_only || trace->current == NULL)
1772 return 0;
1773
1774 ttrace = thread__priv(trace->current);
1775
1776 if (!ttrace->entry_pending)
1777 return 0;
1778
1779 printed = trace__fprintf_entry_head(trace, trace->current, 0, false, ttrace->entry_time, trace->output);
1780 printed += len = fprintf(trace->output, "%s)", ttrace->entry_str);
1781
1782 if (len < trace->args_alignment - 4)
1783 printed += fprintf(trace->output, "%-*s", trace->args_alignment - 4 - len, " ");
1784
1785 printed += fprintf(trace->output, " ...\n");
1786
1787 ttrace->entry_pending = false;
1788 ++trace->nr_events_printed;
1789
1790 return printed;
1791}
1792
1793static int trace__fprintf_sample(struct trace *trace, struct perf_evsel *evsel,
1794 struct perf_sample *sample, struct thread *thread)
1795{
1796 int printed = 0;
1797
1798 if (trace->print_sample) {
1799 double ts = (double)sample->time / NSEC_PER_MSEC;
1800
1801 printed += fprintf(trace->output, "%22s %10.3f %s %d/%d [%d]\n",
1802 perf_evsel__name(evsel), ts,
1803 thread__comm_str(thread),
1804 sample->pid, sample->tid, sample->cpu);
1805 }
1806
1807 return printed;
1808}
1809
1810static void *syscall__augmented_args(struct syscall *sc, struct perf_sample *sample, int *augmented_args_size, int raw_augmented_args_size)
1811{
1812 void *augmented_args = NULL;
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827 int args_size = raw_augmented_args_size ?: sc->args_size;
1828
1829 *augmented_args_size = sample->raw_size - args_size;
1830 if (*augmented_args_size > 0)
1831 augmented_args = sample->raw_data + args_size;
1832
1833 return augmented_args;
1834}
1835
1836static int trace__sys_enter(struct trace *trace, struct perf_evsel *evsel,
1837 union perf_event *event __maybe_unused,
1838 struct perf_sample *sample)
1839{
1840 char *msg;
1841 void *args;
1842 int printed = 0;
1843 struct thread *thread;
1844 int id = perf_evsel__sc_tp_uint(evsel, id, sample), err = -1;
1845 int augmented_args_size = 0;
1846 void *augmented_args = NULL;
1847 struct syscall *sc = trace__syscall_info(trace, evsel, id);
1848 struct thread_trace *ttrace;
1849
1850 if (sc == NULL)
1851 return -1;
1852
1853 thread = machine__findnew_thread(trace->host, sample->pid, sample->tid);
1854 ttrace = thread__trace(thread, trace->output);
1855 if (ttrace == NULL)
1856 goto out_put;
1857
1858 trace__fprintf_sample(trace, evsel, sample, thread);
1859
1860 args = perf_evsel__sc_tp_ptr(evsel, args, sample);
1861
1862 if (ttrace->entry_str == NULL) {
1863 ttrace->entry_str = malloc(trace__entry_str_size);
1864 if (!ttrace->entry_str)
1865 goto out_put;
1866 }
1867
1868 if (!(trace->duration_filter || trace->summary_only || trace->min_stack))
1869 trace__printf_interrupted_entry(trace);
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880 if (evsel != trace->syscalls.events.sys_enter)
1881 augmented_args = syscall__augmented_args(sc, sample, &augmented_args_size, trace->raw_augmented_syscalls_args_size);
1882 ttrace->entry_time = sample->time;
1883 msg = ttrace->entry_str;
1884 printed += scnprintf(msg + printed, trace__entry_str_size - printed, "%s(", sc->name);
1885
1886 printed += syscall__scnprintf_args(sc, msg + printed, trace__entry_str_size - printed,
1887 args, augmented_args, augmented_args_size, trace, thread);
1888
1889 if (sc->is_exit) {
1890 if (!(trace->duration_filter || trace->summary_only || trace->failure_only || trace->min_stack)) {
1891 int alignment = 0;
1892
1893 trace__fprintf_entry_head(trace, thread, 0, false, ttrace->entry_time, trace->output);
1894 printed = fprintf(trace->output, "%s)", ttrace->entry_str);
1895 if (trace->args_alignment > printed)
1896 alignment = trace->args_alignment - printed;
1897 fprintf(trace->output, "%*s= ?\n", alignment, " ");
1898 }
1899 } else {
1900 ttrace->entry_pending = true;
1901
1902 ttrace->filename.pending_open = false;
1903 }
1904
1905 if (trace->current != thread) {
1906 thread__put(trace->current);
1907 trace->current = thread__get(thread);
1908 }
1909 err = 0;
1910out_put:
1911 thread__put(thread);
1912 return err;
1913}
1914
1915static int trace__fprintf_sys_enter(struct trace *trace, struct perf_evsel *evsel,
1916 struct perf_sample *sample)
1917{
1918 struct thread_trace *ttrace;
1919 struct thread *thread;
1920 int id = perf_evsel__sc_tp_uint(evsel, id, sample), err = -1;
1921 struct syscall *sc = trace__syscall_info(trace, evsel, id);
1922 char msg[1024];
1923 void *args, *augmented_args = NULL;
1924 int augmented_args_size;
1925
1926 if (sc == NULL)
1927 return -1;
1928
1929 thread = machine__findnew_thread(trace->host, sample->pid, sample->tid);
1930 ttrace = thread__trace(thread, trace->output);
1931
1932
1933
1934
1935 if (ttrace == NULL)
1936 goto out_put;
1937
1938 args = perf_evsel__sc_tp_ptr(evsel, args, sample);
1939 augmented_args = syscall__augmented_args(sc, sample, &augmented_args_size, trace->raw_augmented_syscalls_args_size);
1940 syscall__scnprintf_args(sc, msg, sizeof(msg), args, augmented_args, augmented_args_size, trace, thread);
1941 fprintf(trace->output, "%s", msg);
1942 err = 0;
1943out_put:
1944 thread__put(thread);
1945 return err;
1946}
1947
1948static int trace__resolve_callchain(struct trace *trace, struct perf_evsel *evsel,
1949 struct perf_sample *sample,
1950 struct callchain_cursor *cursor)
1951{
1952 struct addr_location al;
1953 int max_stack = evsel->attr.sample_max_stack ?
1954 evsel->attr.sample_max_stack :
1955 trace->max_stack;
1956 int err;
1957
1958 if (machine__resolve(trace->host, &al, sample) < 0)
1959 return -1;
1960
1961 err = thread__resolve_callchain(al.thread, cursor, evsel, sample, NULL, NULL, max_stack);
1962 addr_location__put(&al);
1963 return err;
1964}
1965
1966static int trace__fprintf_callchain(struct trace *trace, struct perf_sample *sample)
1967{
1968
1969 const unsigned int print_opts = EVSEL__PRINT_SYM |
1970 EVSEL__PRINT_DSO |
1971 EVSEL__PRINT_UNKNOWN_AS_ADDR;
1972
1973 return sample__fprintf_callchain(sample, 38, print_opts, &callchain_cursor, trace->output);
1974}
1975
1976static const char *errno_to_name(struct perf_evsel *evsel, int err)
1977{
1978 struct perf_env *env = perf_evsel__env(evsel);
1979 const char *arch_name = perf_env__arch(env);
1980
1981 return arch_syscalls__strerrno(arch_name, err);
1982}
1983
1984static int trace__sys_exit(struct trace *trace, struct perf_evsel *evsel,
1985 union perf_event *event __maybe_unused,
1986 struct perf_sample *sample)
1987{
1988 long ret;
1989 u64 duration = 0;
1990 bool duration_calculated = false;
1991 struct thread *thread;
1992 int id = perf_evsel__sc_tp_uint(evsel, id, sample), err = -1, callchain_ret = 0, printed = 0;
1993 int alignment = trace->args_alignment;
1994 struct syscall *sc = trace__syscall_info(trace, evsel, id);
1995 struct thread_trace *ttrace;
1996
1997 if (sc == NULL)
1998 return -1;
1999
2000 thread = machine__findnew_thread(trace->host, sample->pid, sample->tid);
2001 ttrace = thread__trace(thread, trace->output);
2002 if (ttrace == NULL)
2003 goto out_put;
2004
2005 trace__fprintf_sample(trace, evsel, sample, thread);
2006
2007 if (trace->summary)
2008 thread__update_stats(ttrace, id, sample);
2009
2010 ret = perf_evsel__sc_tp_uint(evsel, ret, sample);
2011
2012 if (sc->is_open && ret >= 0 && ttrace->filename.pending_open) {
2013 trace__set_fd_pathname(thread, ret, ttrace->filename.name);
2014 ttrace->filename.pending_open = false;
2015 ++trace->stats.vfs_getname;
2016 }
2017
2018 if (ttrace->entry_time) {
2019 duration = sample->time - ttrace->entry_time;
2020 if (trace__filter_duration(trace, duration))
2021 goto out;
2022 duration_calculated = true;
2023 } else if (trace->duration_filter)
2024 goto out;
2025
2026 if (sample->callchain) {
2027 callchain_ret = trace__resolve_callchain(trace, evsel, sample, &callchain_cursor);
2028 if (callchain_ret == 0) {
2029 if (callchain_cursor.nr < trace->min_stack)
2030 goto out;
2031 callchain_ret = 1;
2032 }
2033 }
2034
2035 if (trace->summary_only || (ret >= 0 && trace->failure_only))
2036 goto out;
2037
2038 trace__fprintf_entry_head(trace, thread, duration, duration_calculated, ttrace->entry_time, trace->output);
2039
2040 if (ttrace->entry_pending) {
2041 printed = fprintf(trace->output, "%s", ttrace->entry_str);
2042 } else {
2043 printed += fprintf(trace->output, " ... [");
2044 color_fprintf(trace->output, PERF_COLOR_YELLOW, "continued");
2045 printed += 9;
2046 printed += fprintf(trace->output, "]: %s()", sc->name);
2047 }
2048
2049 printed++;
2050
2051 if (alignment > printed)
2052 alignment -= printed;
2053 else
2054 alignment = 0;
2055
2056 fprintf(trace->output, ")%*s= ", alignment, " ");
2057
2058 if (sc->fmt == NULL) {
2059 if (ret < 0)
2060 goto errno_print;
2061signed_print:
2062 fprintf(trace->output, "%ld", ret);
2063 } else if (ret < 0) {
2064errno_print: {
2065 char bf[STRERR_BUFSIZE];
2066 const char *emsg = str_error_r(-ret, bf, sizeof(bf)),
2067 *e = errno_to_name(evsel, -ret);
2068
2069 fprintf(trace->output, "-1 %s (%s)", e, emsg);
2070 }
2071 } else if (ret == 0 && sc->fmt->timeout)
2072 fprintf(trace->output, "0 (Timeout)");
2073 else if (ttrace->ret_scnprintf) {
2074 char bf[1024];
2075 struct syscall_arg arg = {
2076 .val = ret,
2077 .thread = thread,
2078 .trace = trace,
2079 };
2080 ttrace->ret_scnprintf(bf, sizeof(bf), &arg);
2081 ttrace->ret_scnprintf = NULL;
2082 fprintf(trace->output, "%s", bf);
2083 } else if (sc->fmt->hexret)
2084 fprintf(trace->output, "%#lx", ret);
2085 else if (sc->fmt->errpid) {
2086 struct thread *child = machine__find_thread(trace->host, ret, ret);
2087
2088 if (child != NULL) {
2089 fprintf(trace->output, "%ld", ret);
2090 if (child->comm_set)
2091 fprintf(trace->output, " (%s)", thread__comm_str(child));
2092 thread__put(child);
2093 }
2094 } else
2095 goto signed_print;
2096
2097 fputc('\n', trace->output);
2098
2099
2100
2101
2102
2103 if (++trace->nr_events_printed == trace->max_events && trace->max_events != ULONG_MAX)
2104 interrupted = true;
2105
2106 if (callchain_ret > 0)
2107 trace__fprintf_callchain(trace, sample);
2108 else if (callchain_ret < 0)
2109 pr_err("Problem processing %s callchain, skipping...\n", perf_evsel__name(evsel));
2110out:
2111 ttrace->entry_pending = false;
2112 err = 0;
2113out_put:
2114 thread__put(thread);
2115 return err;
2116}
2117
2118static int trace__vfs_getname(struct trace *trace, struct perf_evsel *evsel,
2119 union perf_event *event __maybe_unused,
2120 struct perf_sample *sample)
2121{
2122 struct thread *thread = machine__findnew_thread(trace->host, sample->pid, sample->tid);
2123 struct thread_trace *ttrace;
2124 size_t filename_len, entry_str_len, to_move;
2125 ssize_t remaining_space;
2126 char *pos;
2127 const char *filename = perf_evsel__rawptr(evsel, sample, "pathname");
2128
2129 if (!thread)
2130 goto out;
2131
2132 ttrace = thread__priv(thread);
2133 if (!ttrace)
2134 goto out_put;
2135
2136 filename_len = strlen(filename);
2137 if (filename_len == 0)
2138 goto out_put;
2139
2140 if (ttrace->filename.namelen < filename_len) {
2141 char *f = realloc(ttrace->filename.name, filename_len + 1);
2142
2143 if (f == NULL)
2144 goto out_put;
2145
2146 ttrace->filename.namelen = filename_len;
2147 ttrace->filename.name = f;
2148 }
2149
2150 strcpy(ttrace->filename.name, filename);
2151 ttrace->filename.pending_open = true;
2152
2153 if (!ttrace->filename.ptr)
2154 goto out_put;
2155
2156 entry_str_len = strlen(ttrace->entry_str);
2157 remaining_space = trace__entry_str_size - entry_str_len - 1;
2158 if (remaining_space <= 0)
2159 goto out_put;
2160
2161 if (filename_len > (size_t)remaining_space) {
2162 filename += filename_len - remaining_space;
2163 filename_len = remaining_space;
2164 }
2165
2166 to_move = entry_str_len - ttrace->filename.entry_str_pos + 1;
2167 pos = ttrace->entry_str + ttrace->filename.entry_str_pos;
2168 memmove(pos + filename_len, pos, to_move);
2169 memcpy(pos, filename, filename_len);
2170
2171 ttrace->filename.ptr = 0;
2172 ttrace->filename.entry_str_pos = 0;
2173out_put:
2174 thread__put(thread);
2175out:
2176 return 0;
2177}
2178
2179static int trace__sched_stat_runtime(struct trace *trace, struct perf_evsel *evsel,
2180 union perf_event *event __maybe_unused,
2181 struct perf_sample *sample)
2182{
2183 u64 runtime = perf_evsel__intval(evsel, sample, "runtime");
2184 double runtime_ms = (double)runtime / NSEC_PER_MSEC;
2185 struct thread *thread = machine__findnew_thread(trace->host,
2186 sample->pid,
2187 sample->tid);
2188 struct thread_trace *ttrace = thread__trace(thread, trace->output);
2189
2190 if (ttrace == NULL)
2191 goto out_dump;
2192
2193 ttrace->runtime_ms += runtime_ms;
2194 trace->runtime_ms += runtime_ms;
2195out_put:
2196 thread__put(thread);
2197 return 0;
2198
2199out_dump:
2200 fprintf(trace->output, "%s: comm=%s,pid=%u,runtime=%" PRIu64 ",vruntime=%" PRIu64 ")\n",
2201 evsel->name,
2202 perf_evsel__strval(evsel, sample, "comm"),
2203 (pid_t)perf_evsel__intval(evsel, sample, "pid"),
2204 runtime,
2205 perf_evsel__intval(evsel, sample, "vruntime"));
2206 goto out_put;
2207}
2208
2209static int bpf_output__printer(enum binary_printer_ops op,
2210 unsigned int val, void *extra __maybe_unused, FILE *fp)
2211{
2212 unsigned char ch = (unsigned char)val;
2213
2214 switch (op) {
2215 case BINARY_PRINT_CHAR_DATA:
2216 return fprintf(fp, "%c", isprint(ch) ? ch : '.');
2217 case BINARY_PRINT_DATA_BEGIN:
2218 case BINARY_PRINT_LINE_BEGIN:
2219 case BINARY_PRINT_ADDR:
2220 case BINARY_PRINT_NUM_DATA:
2221 case BINARY_PRINT_NUM_PAD:
2222 case BINARY_PRINT_SEP:
2223 case BINARY_PRINT_CHAR_PAD:
2224 case BINARY_PRINT_LINE_END:
2225 case BINARY_PRINT_DATA_END:
2226 default:
2227 break;
2228 }
2229
2230 return 0;
2231}
2232
2233static void bpf_output__fprintf(struct trace *trace,
2234 struct perf_sample *sample)
2235{
2236 binary__fprintf(sample->raw_data, sample->raw_size, 8,
2237 bpf_output__printer, NULL, trace->output);
2238 ++trace->nr_events_printed;
2239}
2240
2241static int trace__event_handler(struct trace *trace, struct perf_evsel *evsel,
2242 union perf_event *event __maybe_unused,
2243 struct perf_sample *sample)
2244{
2245 struct thread *thread;
2246 int callchain_ret = 0;
2247
2248
2249
2250
2251
2252
2253 if (evsel->disabled)
2254 return 0;
2255
2256 thread = machine__findnew_thread(trace->host, sample->pid, sample->tid);
2257
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)
2262 goto out;
2263 callchain_ret = 1;
2264 }
2265 }
2266
2267 trace__printf_interrupted_entry(trace);
2268 trace__fprintf_tstamp(trace, sample->time, trace->output);
2269
2270 if (trace->trace_syscalls && trace->show_duration)
2271 fprintf(trace->output, "( ): ");
2272
2273 if (thread)
2274 trace__fprintf_comm_tid(trace, thread, trace->output);
2275
2276 if (evsel == trace->syscalls.events.augmented) {
2277 int id = perf_evsel__sc_tp_uint(evsel, id, sample);
2278 struct syscall *sc = trace__syscall_info(trace, evsel, id);
2279
2280 if (sc) {
2281 fprintf(trace->output, "%s(", sc->name);
2282 trace__fprintf_sys_enter(trace, evsel, sample);
2283 fputc(')', trace->output);
2284 goto newline;
2285 }
2286
2287
2288
2289
2290
2291
2292 }
2293
2294 fprintf(trace->output, "%s:", evsel->name);
2295
2296 if (perf_evsel__is_bpf_output(evsel)) {
2297 bpf_output__fprintf(trace, sample);
2298 } else if (evsel->tp_format) {
2299 if (strncmp(evsel->tp_format->name, "sys_enter_", 10) ||
2300 trace__fprintf_sys_enter(trace, evsel, sample)) {
2301 event_format__fprintf(evsel->tp_format, sample->cpu,
2302 sample->raw_data, sample->raw_size,
2303 trace->output);
2304 ++trace->nr_events_printed;
2305
2306 if (evsel->max_events != ULONG_MAX && ++evsel->nr_events_printed == evsel->max_events) {
2307 perf_evsel__disable(evsel);
2308 perf_evsel__close(evsel);
2309 }
2310 }
2311 }
2312
2313newline:
2314 fprintf(trace->output, "\n");
2315
2316 if (callchain_ret > 0)
2317 trace__fprintf_callchain(trace, sample);
2318 else if (callchain_ret < 0)
2319 pr_err("Problem processing %s callchain, skipping...\n", perf_evsel__name(evsel));
2320out:
2321 thread__put(thread);
2322 return 0;
2323}
2324
2325static void print_location(FILE *f, struct perf_sample *sample,
2326 struct addr_location *al,
2327 bool print_dso, bool print_sym)
2328{
2329
2330 if ((verbose > 0 || print_dso) && al->map)
2331 fprintf(f, "%s@", al->map->dso->long_name);
2332
2333 if ((verbose > 0 || print_sym) && al->sym)
2334 fprintf(f, "%s+0x%" PRIx64, al->sym->name,
2335 al->addr - al->sym->start);
2336 else if (al->map)
2337 fprintf(f, "0x%" PRIx64, al->addr);
2338 else
2339 fprintf(f, "0x%" PRIx64, sample->addr);
2340}
2341
2342static int trace__pgfault(struct trace *trace,
2343 struct perf_evsel *evsel,
2344 union perf_event *event __maybe_unused,
2345 struct perf_sample *sample)
2346{
2347 struct thread *thread;
2348 struct addr_location al;
2349 char map_type = 'd';
2350 struct thread_trace *ttrace;
2351 int err = -1;
2352 int callchain_ret = 0;
2353
2354 thread = machine__findnew_thread(trace->host, sample->pid, sample->tid);
2355
2356 if (sample->callchain) {
2357 callchain_ret = trace__resolve_callchain(trace, evsel, sample, &callchain_cursor);
2358 if (callchain_ret == 0) {
2359 if (callchain_cursor.nr < trace->min_stack)
2360 goto out_put;
2361 callchain_ret = 1;
2362 }
2363 }
2364
2365 ttrace = thread__trace(thread, trace->output);
2366 if (ttrace == NULL)
2367 goto out_put;
2368
2369 if (evsel->attr.config == PERF_COUNT_SW_PAGE_FAULTS_MAJ)
2370 ttrace->pfmaj++;
2371 else
2372 ttrace->pfmin++;
2373
2374 if (trace->summary_only)
2375 goto out;
2376
2377 thread__find_symbol(thread, sample->cpumode, sample->ip, &al);
2378
2379 trace__fprintf_entry_head(trace, thread, 0, true, sample->time, trace->output);
2380
2381 fprintf(trace->output, "%sfault [",
2382 evsel->attr.config == PERF_COUNT_SW_PAGE_FAULTS_MAJ ?
2383 "maj" : "min");
2384
2385 print_location(trace->output, sample, &al, false, true);
2386
2387 fprintf(trace->output, "] => ");
2388
2389 thread__find_symbol(thread, sample->cpumode, sample->addr, &al);
2390
2391 if (!al.map) {
2392 thread__find_symbol(thread, sample->cpumode, sample->addr, &al);
2393
2394 if (al.map)
2395 map_type = 'x';
2396 else
2397 map_type = '?';
2398 }
2399
2400 print_location(trace->output, sample, &al, true, false);
2401
2402 fprintf(trace->output, " (%c%c)\n", map_type, al.level);
2403
2404 if (callchain_ret > 0)
2405 trace__fprintf_callchain(trace, sample);
2406 else if (callchain_ret < 0)
2407 pr_err("Problem processing %s callchain, skipping...\n", perf_evsel__name(evsel));
2408
2409 ++trace->nr_events_printed;
2410out:
2411 err = 0;
2412out_put:
2413 thread__put(thread);
2414 return err;
2415}
2416
2417static void trace__set_base_time(struct trace *trace,
2418 struct perf_evsel *evsel,
2419 struct perf_sample *sample)
2420{
2421
2422
2423
2424
2425
2426
2427
2428
2429 if (trace->base_time == 0 && !trace->full_time &&
2430 (evsel->attr.sample_type & PERF_SAMPLE_TIME))
2431 trace->base_time = sample->time;
2432}
2433
2434static int trace__process_sample(struct perf_tool *tool,
2435 union perf_event *event,
2436 struct perf_sample *sample,
2437 struct perf_evsel *evsel,
2438 struct machine *machine __maybe_unused)
2439{
2440 struct trace *trace = container_of(tool, struct trace, tool);
2441 struct thread *thread;
2442 int err = 0;
2443
2444 tracepoint_handler handler = evsel->handler;
2445
2446 thread = machine__findnew_thread(trace->host, sample->pid, sample->tid);
2447 if (thread && thread__is_filtered(thread))
2448 goto out;
2449
2450 trace__set_base_time(trace, evsel, sample);
2451
2452 if (handler) {
2453 ++trace->nr_events;
2454 handler(trace, evsel, event, sample);
2455 }
2456out:
2457 thread__put(thread);
2458 return err;
2459}
2460
2461static int trace__record(struct trace *trace, int argc, const char **argv)
2462{
2463 unsigned int rec_argc, i, j;
2464 const char **rec_argv;
2465 const char * const record_args[] = {
2466 "record",
2467 "-R",
2468 "-m", "1024",
2469 "-c", "1",
2470 };
2471
2472 const char * const sc_args[] = { "-e", };
2473 unsigned int sc_args_nr = ARRAY_SIZE(sc_args);
2474 const char * const majpf_args[] = { "-e", "major-faults" };
2475 unsigned int majpf_args_nr = ARRAY_SIZE(majpf_args);
2476 const char * const minpf_args[] = { "-e", "minor-faults" };
2477 unsigned int minpf_args_nr = ARRAY_SIZE(minpf_args);
2478
2479
2480 rec_argc = ARRAY_SIZE(record_args) + sc_args_nr + 1 +
2481 majpf_args_nr + minpf_args_nr + argc;
2482 rec_argv = calloc(rec_argc + 1, sizeof(char *));
2483
2484 if (rec_argv == NULL)
2485 return -ENOMEM;
2486
2487 j = 0;
2488 for (i = 0; i < ARRAY_SIZE(record_args); i++)
2489 rec_argv[j++] = record_args[i];
2490
2491 if (trace->trace_syscalls) {
2492 for (i = 0; i < sc_args_nr; i++)
2493 rec_argv[j++] = sc_args[i];
2494
2495
2496 if (is_valid_tracepoint("raw_syscalls:sys_enter"))
2497 rec_argv[j++] = "raw_syscalls:sys_enter,raw_syscalls:sys_exit";
2498 else if (is_valid_tracepoint("syscalls:sys_enter"))
2499 rec_argv[j++] = "syscalls:sys_enter,syscalls:sys_exit";
2500 else {
2501 pr_err("Neither raw_syscalls nor syscalls events exist.\n");
2502 free(rec_argv);
2503 return -1;
2504 }
2505 }
2506
2507 if (trace->trace_pgfaults & TRACE_PFMAJ)
2508 for (i = 0; i < majpf_args_nr; i++)
2509 rec_argv[j++] = majpf_args[i];
2510
2511 if (trace->trace_pgfaults & TRACE_PFMIN)
2512 for (i = 0; i < minpf_args_nr; i++)
2513 rec_argv[j++] = minpf_args[i];
2514
2515 for (i = 0; i < (unsigned int)argc; i++)
2516 rec_argv[j++] = argv[i];
2517
2518 return cmd_record(j, rec_argv);
2519}
2520
2521static size_t trace__fprintf_thread_summary(struct trace *trace, FILE *fp);
2522
2523static bool perf_evlist__add_vfs_getname(struct perf_evlist *evlist)
2524{
2525 bool found = false;
2526 struct perf_evsel *evsel, *tmp;
2527 struct parse_events_error err = { .idx = 0, };
2528 int ret = parse_events(evlist, "probe:vfs_getname*", &err);
2529
2530 if (ret)
2531 return false;
2532
2533 evlist__for_each_entry_safe(evlist, evsel, tmp) {
2534 if (!strstarts(perf_evsel__name(evsel), "probe:vfs_getname"))
2535 continue;
2536
2537 if (perf_evsel__field(evsel, "pathname")) {
2538 evsel->handler = trace__vfs_getname;
2539 found = true;
2540 continue;
2541 }
2542
2543 list_del_init(&evsel->node);
2544 evsel->evlist = NULL;
2545 perf_evsel__delete(evsel);
2546 }
2547
2548 return found;
2549}
2550
2551static struct perf_evsel *perf_evsel__new_pgfault(u64 config)
2552{
2553 struct perf_evsel *evsel;
2554 struct perf_event_attr attr = {
2555 .type = PERF_TYPE_SOFTWARE,
2556 .mmap_data = 1,
2557 };
2558
2559 attr.config = config;
2560 attr.sample_period = 1;
2561
2562 event_attr_init(&attr);
2563
2564 evsel = perf_evsel__new(&attr);
2565 if (evsel)
2566 evsel->handler = trace__pgfault;
2567
2568 return evsel;
2569}
2570
2571static void trace__handle_event(struct trace *trace, union perf_event *event, struct perf_sample *sample)
2572{
2573 const u32 type = event->header.type;
2574 struct perf_evsel *evsel;
2575
2576 if (type != PERF_RECORD_SAMPLE) {
2577 trace__process_event(trace, trace->host, event, sample);
2578 return;
2579 }
2580
2581 evsel = perf_evlist__id2evsel(trace->evlist, sample->id);
2582 if (evsel == NULL) {
2583 fprintf(trace->output, "Unknown tp ID %" PRIu64 ", skipping...\n", sample->id);
2584 return;
2585 }
2586
2587 trace__set_base_time(trace, evsel, sample);
2588
2589 if (evsel->attr.type == PERF_TYPE_TRACEPOINT &&
2590 sample->raw_data == NULL) {
2591 fprintf(trace->output, "%s sample with no payload for tid: %d, cpu %d, raw_size=%d, skipping...\n",
2592 perf_evsel__name(evsel), sample->tid,
2593 sample->cpu, sample->raw_size);
2594 } else {
2595 tracepoint_handler handler = evsel->handler;
2596 handler(trace, evsel, event, sample);
2597 }
2598
2599 if (trace->nr_events_printed >= trace->max_events && trace->max_events != ULONG_MAX)
2600 interrupted = true;
2601}
2602
2603static int trace__add_syscall_newtp(struct trace *trace)
2604{
2605 int ret = -1;
2606 struct perf_evlist *evlist = trace->evlist;
2607 struct perf_evsel *sys_enter, *sys_exit;
2608
2609 sys_enter = perf_evsel__raw_syscall_newtp("sys_enter", trace__sys_enter);
2610 if (sys_enter == NULL)
2611 goto out;
2612
2613 if (perf_evsel__init_sc_tp_ptr_field(sys_enter, args))
2614 goto out_delete_sys_enter;
2615
2616 sys_exit = perf_evsel__raw_syscall_newtp("sys_exit", trace__sys_exit);
2617 if (sys_exit == NULL)
2618 goto out_delete_sys_enter;
2619
2620 if (perf_evsel__init_sc_tp_uint_field(sys_exit, ret))
2621 goto out_delete_sys_exit;
2622
2623 perf_evsel__config_callchain(sys_enter, &trace->opts, &callchain_param);
2624 perf_evsel__config_callchain(sys_exit, &trace->opts, &callchain_param);
2625
2626 perf_evlist__add(evlist, sys_enter);
2627 perf_evlist__add(evlist, sys_exit);
2628
2629 if (callchain_param.enabled && !trace->kernel_syscallchains) {
2630
2631
2632
2633
2634
2635 sys_exit->attr.exclude_callchain_kernel = 1;
2636 }
2637
2638 trace->syscalls.events.sys_enter = sys_enter;
2639 trace->syscalls.events.sys_exit = sys_exit;
2640
2641 ret = 0;
2642out:
2643 return ret;
2644
2645out_delete_sys_exit:
2646 perf_evsel__delete_priv(sys_exit);
2647out_delete_sys_enter:
2648 perf_evsel__delete_priv(sys_enter);
2649 goto out;
2650}
2651
2652static int trace__set_ev_qualifier_tp_filter(struct trace *trace)
2653{
2654 int err = -1;
2655 struct perf_evsel *sys_exit;
2656 char *filter = asprintf_expr_inout_ints("id", !trace->not_ev_qualifier,
2657 trace->ev_qualifier_ids.nr,
2658 trace->ev_qualifier_ids.entries);
2659
2660 if (filter == NULL)
2661 goto out_enomem;
2662
2663 if (!perf_evsel__append_tp_filter(trace->syscalls.events.sys_enter,
2664 filter)) {
2665 sys_exit = trace->syscalls.events.sys_exit;
2666 err = perf_evsel__append_tp_filter(sys_exit, filter);
2667 }
2668
2669 free(filter);
2670out:
2671 return err;
2672out_enomem:
2673 errno = ENOMEM;
2674 goto out;
2675}
2676
2677#ifdef HAVE_LIBBPF_SUPPORT
2678static int trace__set_ev_qualifier_bpf_filter(struct trace *trace)
2679{
2680 int fd = bpf_map__fd(trace->syscalls.map);
2681 struct bpf_map_syscall_entry value = {
2682 .enabled = !trace->not_ev_qualifier,
2683 };
2684 int err = 0;
2685 size_t i;
2686
2687 for (i = 0; i < trace->ev_qualifier_ids.nr; ++i) {
2688 int key = trace->ev_qualifier_ids.entries[i];
2689
2690 err = bpf_map_update_elem(fd, &key, &value, BPF_EXIST);
2691 if (err)
2692 break;
2693 }
2694
2695 return err;
2696}
2697
2698static int __trace__init_syscalls_bpf_map(struct trace *trace, bool enabled)
2699{
2700 int fd = bpf_map__fd(trace->syscalls.map);
2701 struct bpf_map_syscall_entry value = {
2702 .enabled = enabled,
2703 };
2704 int err = 0, key;
2705
2706 for (key = 0; key < trace->sctbl->syscalls.nr_entries; ++key) {
2707 err = bpf_map_update_elem(fd, &key, &value, BPF_ANY);
2708 if (err)
2709 break;
2710 }
2711
2712 return err;
2713}
2714
2715static int trace__init_syscalls_bpf_map(struct trace *trace)
2716{
2717 bool enabled = true;
2718
2719 if (trace->ev_qualifier_ids.nr)
2720 enabled = trace->not_ev_qualifier;
2721
2722 return __trace__init_syscalls_bpf_map(trace, enabled);
2723}
2724#else
2725static int trace__set_ev_qualifier_bpf_filter(struct trace *trace __maybe_unused)
2726{
2727 return 0;
2728}
2729
2730static int trace__init_syscalls_bpf_map(struct trace *trace __maybe_unused)
2731{
2732 return 0;
2733}
2734#endif
2735
2736static int trace__set_ev_qualifier_filter(struct trace *trace)
2737{
2738 if (trace->syscalls.map)
2739 return trace__set_ev_qualifier_bpf_filter(trace);
2740 if (trace->syscalls.events.sys_enter)
2741 return trace__set_ev_qualifier_tp_filter(trace);
2742 return 0;
2743}
2744
2745static int bpf_map__set_filter_pids(struct bpf_map *map __maybe_unused,
2746 size_t npids __maybe_unused, pid_t *pids __maybe_unused)
2747{
2748 int err = 0;
2749#ifdef HAVE_LIBBPF_SUPPORT
2750 bool value = true;
2751 int map_fd = bpf_map__fd(map);
2752 size_t i;
2753
2754 for (i = 0; i < npids; ++i) {
2755 err = bpf_map_update_elem(map_fd, &pids[i], &value, BPF_ANY);
2756 if (err)
2757 break;
2758 }
2759#endif
2760 return err;
2761}
2762
2763static int trace__set_filter_loop_pids(struct trace *trace)
2764{
2765 unsigned int nr = 1, err;
2766 pid_t pids[32] = {
2767 getpid(),
2768 };
2769 struct thread *thread = machine__find_thread(trace->host, pids[0], pids[0]);
2770
2771 while (thread && nr < ARRAY_SIZE(pids)) {
2772 struct thread *parent = machine__find_thread(trace->host, thread->ppid, thread->ppid);
2773
2774 if (parent == NULL)
2775 break;
2776
2777 if (!strcmp(thread__comm_str(parent), "sshd") ||
2778 strstarts(thread__comm_str(parent), "gnome-terminal")) {
2779 pids[nr++] = parent->tid;
2780 break;
2781 }
2782 thread = parent;
2783 }
2784
2785 err = perf_evlist__set_tp_filter_pids(trace->evlist, nr, pids);
2786 if (!err && trace->filter_pids.map)
2787 err = bpf_map__set_filter_pids(trace->filter_pids.map, nr, pids);
2788
2789 return err;
2790}
2791
2792static int trace__set_filter_pids(struct trace *trace)
2793{
2794 int err = 0;
2795
2796
2797
2798
2799
2800
2801 if (trace->filter_pids.nr > 0) {
2802 err = perf_evlist__set_tp_filter_pids(trace->evlist, trace->filter_pids.nr,
2803 trace->filter_pids.entries);
2804 if (!err && trace->filter_pids.map) {
2805 err = bpf_map__set_filter_pids(trace->filter_pids.map, trace->filter_pids.nr,
2806 trace->filter_pids.entries);
2807 }
2808 } else if (thread_map__pid(trace->evlist->threads, 0) == -1) {
2809 err = trace__set_filter_loop_pids(trace);
2810 }
2811
2812 return err;
2813}
2814
2815static int __trace__deliver_event(struct trace *trace, union perf_event *event)
2816{
2817 struct perf_evlist *evlist = trace->evlist;
2818 struct perf_sample sample;
2819 int err;
2820
2821 err = perf_evlist__parse_sample(evlist, event, &sample);
2822 if (err)
2823 fprintf(trace->output, "Can't parse sample, err = %d, skipping...\n", err);
2824 else
2825 trace__handle_event(trace, event, &sample);
2826
2827 return 0;
2828}
2829
2830static int __trace__flush_events(struct trace *trace)
2831{
2832 u64 first = ordered_events__first_time(&trace->oe.data);
2833 u64 flush = trace->oe.last - NSEC_PER_SEC;
2834
2835
2836 if (first && first < flush)
2837 return ordered_events__flush_time(&trace->oe.data, flush);
2838
2839 return 0;
2840}
2841
2842static int trace__flush_events(struct trace *trace)
2843{
2844 return !trace->sort_events ? 0 : __trace__flush_events(trace);
2845}
2846
2847static int trace__deliver_event(struct trace *trace, union perf_event *event)
2848{
2849 int err;
2850
2851 if (!trace->sort_events)
2852 return __trace__deliver_event(trace, event);
2853
2854 err = perf_evlist__parse_sample_timestamp(trace->evlist, event, &trace->oe.last);
2855 if (err && err != -1)
2856 return err;
2857
2858 err = ordered_events__queue(&trace->oe.data, event, trace->oe.last, 0);
2859 if (err)
2860 return err;
2861
2862 return trace__flush_events(trace);
2863}
2864
2865static int ordered_events__deliver_event(struct ordered_events *oe,
2866 struct ordered_event *event)
2867{
2868 struct trace *trace = container_of(oe, struct trace, oe.data);
2869
2870 return __trace__deliver_event(trace, event->event);
2871}
2872
2873static int trace__run(struct trace *trace, int argc, const char **argv)
2874{
2875 struct perf_evlist *evlist = trace->evlist;
2876 struct perf_evsel *evsel, *pgfault_maj = NULL, *pgfault_min = NULL;
2877 int err = -1, i;
2878 unsigned long before;
2879 const bool forks = argc > 0;
2880 bool draining = false;
2881
2882 trace->live = true;
2883
2884 if (!trace->raw_augmented_syscalls) {
2885 if (trace->trace_syscalls && trace__add_syscall_newtp(trace))
2886 goto out_error_raw_syscalls;
2887
2888 if (trace->trace_syscalls)
2889 trace->vfs_getname = perf_evlist__add_vfs_getname(evlist);
2890 }
2891
2892 if ((trace->trace_pgfaults & TRACE_PFMAJ)) {
2893 pgfault_maj = perf_evsel__new_pgfault(PERF_COUNT_SW_PAGE_FAULTS_MAJ);
2894 if (pgfault_maj == NULL)
2895 goto out_error_mem;
2896 perf_evsel__config_callchain(pgfault_maj, &trace->opts, &callchain_param);
2897 perf_evlist__add(evlist, pgfault_maj);
2898 }
2899
2900 if ((trace->trace_pgfaults & TRACE_PFMIN)) {
2901 pgfault_min = perf_evsel__new_pgfault(PERF_COUNT_SW_PAGE_FAULTS_MIN);
2902 if (pgfault_min == NULL)
2903 goto out_error_mem;
2904 perf_evsel__config_callchain(pgfault_min, &trace->opts, &callchain_param);
2905 perf_evlist__add(evlist, pgfault_min);
2906 }
2907
2908 if (trace->sched &&
2909 perf_evlist__add_newtp(evlist, "sched", "sched_stat_runtime",
2910 trace__sched_stat_runtime))
2911 goto out_error_sched_stat_runtime;
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938 if (trace->cgroup)
2939 evlist__set_default_cgroup(trace->evlist, trace->cgroup);
2940
2941 err = perf_evlist__create_maps(evlist, &trace->opts.target);
2942 if (err < 0) {
2943 fprintf(trace->output, "Problems parsing the target to trace, check your options!\n");
2944 goto out_delete_evlist;
2945 }
2946
2947 err = trace__symbols_init(trace, evlist);
2948 if (err < 0) {
2949 fprintf(trace->output, "Problems initializing symbol libraries!\n");
2950 goto out_delete_evlist;
2951 }
2952
2953 perf_evlist__config(evlist, &trace->opts, &callchain_param);
2954
2955 signal(SIGCHLD, sig_handler);
2956 signal(SIGINT, sig_handler);
2957
2958 if (forks) {
2959 err = perf_evlist__prepare_workload(evlist, &trace->opts.target,
2960 argv, false, NULL);
2961 if (err < 0) {
2962 fprintf(trace->output, "Couldn't run the workload!\n");
2963 goto out_delete_evlist;
2964 }
2965 }
2966
2967 err = perf_evlist__open(evlist);
2968 if (err < 0)
2969 goto out_error_open;
2970
2971 err = bpf__apply_obj_config();
2972 if (err) {
2973 char errbuf[BUFSIZ];
2974
2975 bpf__strerror_apply_obj_config(err, errbuf, sizeof(errbuf));
2976 pr_err("ERROR: Apply config to BPF failed: %s\n",
2977 errbuf);
2978 goto out_error_open;
2979 }
2980
2981 err = trace__set_filter_pids(trace);
2982 if (err < 0)
2983 goto out_error_mem;
2984
2985 if (trace->syscalls.map)
2986 trace__init_syscalls_bpf_map(trace);
2987
2988 if (trace->ev_qualifier_ids.nr > 0) {
2989 err = trace__set_ev_qualifier_filter(trace);
2990 if (err < 0)
2991 goto out_errno;
2992
2993 if (trace->syscalls.events.sys_exit) {
2994 pr_debug("event qualifier tracepoint filter: %s\n",
2995 trace->syscalls.events.sys_exit->filter);
2996 }
2997 }
2998
2999 err = perf_evlist__apply_filters(evlist, &evsel);
3000 if (err < 0)
3001 goto out_error_apply_filters;
3002
3003 if (trace->dump.map)
3004 bpf_map__fprintf(trace->dump.map, trace->output);
3005
3006 err = perf_evlist__mmap(evlist, trace->opts.mmap_pages);
3007 if (err < 0)
3008 goto out_error_mmap;
3009
3010 if (!target__none(&trace->opts.target) && !trace->opts.initial_delay)
3011 perf_evlist__enable(evlist);
3012
3013 if (forks)
3014 perf_evlist__start_workload(evlist);
3015
3016 if (trace->opts.initial_delay) {
3017 usleep(trace->opts.initial_delay * 1000);
3018 perf_evlist__enable(evlist);
3019 }
3020
3021 trace->multiple_threads = thread_map__pid(evlist->threads, 0) == -1 ||
3022 evlist->threads->nr > 1 ||
3023 perf_evlist__first(evlist)->attr.inherit;
3024
3025
3026
3027
3028
3029
3030
3031 evlist__for_each_entry(evlist, evsel) {
3032 if (evsel__has_callchain(evsel) &&
3033 evsel->attr.sample_max_stack == 0)
3034 evsel->attr.sample_max_stack = trace->max_stack;
3035 }
3036again:
3037 before = trace->nr_events;
3038
3039 for (i = 0; i < evlist->nr_mmaps; i++) {
3040 union perf_event *event;
3041 struct perf_mmap *md;
3042
3043 md = &evlist->mmap[i];
3044 if (perf_mmap__read_init(md) < 0)
3045 continue;
3046
3047 while ((event = perf_mmap__read_event(md)) != NULL) {
3048 ++trace->nr_events;
3049
3050 err = trace__deliver_event(trace, event);
3051 if (err)
3052 goto out_disable;
3053
3054 perf_mmap__consume(md);
3055
3056 if (interrupted)
3057 goto out_disable;
3058
3059 if (done && !draining) {
3060 perf_evlist__disable(evlist);
3061 draining = true;
3062 }
3063 }
3064 perf_mmap__read_done(md);
3065 }
3066
3067 if (trace->nr_events == before) {
3068 int timeout = done ? 100 : -1;
3069
3070 if (!draining && perf_evlist__poll(evlist, timeout) > 0) {
3071 if (perf_evlist__filter_pollfd(evlist, POLLERR | POLLHUP | POLLNVAL) == 0)
3072 draining = true;
3073
3074 goto again;
3075 } else {
3076 if (trace__flush_events(trace))
3077 goto out_disable;
3078 }
3079 } else {
3080 goto again;
3081 }
3082
3083out_disable:
3084 thread__zput(trace->current);
3085
3086 perf_evlist__disable(evlist);
3087
3088 if (trace->sort_events)
3089 ordered_events__flush(&trace->oe.data, OE_FLUSH__FINAL);
3090
3091 if (!err) {
3092 if (trace->summary)
3093 trace__fprintf_thread_summary(trace, trace->output);
3094
3095 if (trace->show_tool_stats) {
3096 fprintf(trace->output, "Stats:\n "
3097 " vfs_getname : %" PRIu64 "\n"
3098 " proc_getname: %" PRIu64 "\n",
3099 trace->stats.vfs_getname,
3100 trace->stats.proc_getname);
3101 }
3102 }
3103
3104out_delete_evlist:
3105 trace__symbols__exit(trace);
3106
3107 perf_evlist__delete(evlist);
3108 cgroup__put(trace->cgroup);
3109 trace->evlist = NULL;
3110 trace->live = false;
3111 return err;
3112{
3113 char errbuf[BUFSIZ];
3114
3115out_error_sched_stat_runtime:
3116 tracing_path__strerror_open_tp(errno, errbuf, sizeof(errbuf), "sched", "sched_stat_runtime");
3117 goto out_error;
3118
3119out_error_raw_syscalls:
3120 tracing_path__strerror_open_tp(errno, errbuf, sizeof(errbuf), "raw_syscalls", "sys_(enter|exit)");
3121 goto out_error;
3122
3123out_error_mmap:
3124 perf_evlist__strerror_mmap(evlist, errno, errbuf, sizeof(errbuf));
3125 goto out_error;
3126
3127out_error_open:
3128 perf_evlist__strerror_open(evlist, errno, errbuf, sizeof(errbuf));
3129
3130out_error:
3131 fprintf(trace->output, "%s\n", errbuf);
3132 goto out_delete_evlist;
3133
3134out_error_apply_filters:
3135 fprintf(trace->output,
3136 "Failed to set filter \"%s\" on event %s with %d (%s)\n",
3137 evsel->filter, perf_evsel__name(evsel), errno,
3138 str_error_r(errno, errbuf, sizeof(errbuf)));
3139 goto out_delete_evlist;
3140}
3141out_error_mem:
3142 fprintf(trace->output, "Not enough memory to run!\n");
3143 goto out_delete_evlist;
3144
3145out_errno:
3146 fprintf(trace->output, "errno=%d,%s\n", errno, strerror(errno));
3147 goto out_delete_evlist;
3148}
3149
3150static int trace__replay(struct trace *trace)
3151{
3152 const struct perf_evsel_str_handler handlers[] = {
3153 { "probe:vfs_getname", trace__vfs_getname, },
3154 };
3155 struct perf_data data = {
3156 .path = input_name,
3157 .mode = PERF_DATA_MODE_READ,
3158 .force = trace->force,
3159 };
3160 struct perf_session *session;
3161 struct perf_evsel *evsel;
3162 int err = -1;
3163
3164 trace->tool.sample = trace__process_sample;
3165 trace->tool.mmap = perf_event__process_mmap;
3166 trace->tool.mmap2 = perf_event__process_mmap2;
3167 trace->tool.comm = perf_event__process_comm;
3168 trace->tool.exit = perf_event__process_exit;
3169 trace->tool.fork = perf_event__process_fork;
3170 trace->tool.attr = perf_event__process_attr;
3171 trace->tool.tracing_data = perf_event__process_tracing_data;
3172 trace->tool.build_id = perf_event__process_build_id;
3173 trace->tool.namespaces = perf_event__process_namespaces;
3174
3175 trace->tool.ordered_events = true;
3176 trace->tool.ordering_requires_timestamps = true;
3177
3178
3179 trace->multiple_threads = true;
3180
3181 session = perf_session__new(&data, false, &trace->tool);
3182 if (session == NULL)
3183 return -1;
3184
3185 if (trace->opts.target.pid)
3186 symbol_conf.pid_list_str = strdup(trace->opts.target.pid);
3187
3188 if (trace->opts.target.tid)
3189 symbol_conf.tid_list_str = strdup(trace->opts.target.tid);
3190
3191 if (symbol__init(&session->header.env) < 0)
3192 goto out;
3193
3194 trace->host = &session->machines.host;
3195
3196 err = perf_session__set_tracepoints_handlers(session, handlers);
3197 if (err)
3198 goto out;
3199
3200 evsel = perf_evlist__find_tracepoint_by_name(session->evlist,
3201 "raw_syscalls:sys_enter");
3202
3203 if (evsel == NULL)
3204 evsel = perf_evlist__find_tracepoint_by_name(session->evlist,
3205 "syscalls:sys_enter");
3206
3207 if (evsel &&
3208 (perf_evsel__init_raw_syscall_tp(evsel, trace__sys_enter) < 0 ||
3209 perf_evsel__init_sc_tp_ptr_field(evsel, args))) {
3210 pr_err("Error during initialize raw_syscalls:sys_enter event\n");
3211 goto out;
3212 }
3213
3214 evsel = perf_evlist__find_tracepoint_by_name(session->evlist,
3215 "raw_syscalls:sys_exit");
3216 if (evsel == NULL)
3217 evsel = perf_evlist__find_tracepoint_by_name(session->evlist,
3218 "syscalls:sys_exit");
3219 if (evsel &&
3220 (perf_evsel__init_raw_syscall_tp(evsel, trace__sys_exit) < 0 ||
3221 perf_evsel__init_sc_tp_uint_field(evsel, ret))) {
3222 pr_err("Error during initialize raw_syscalls:sys_exit event\n");
3223 goto out;
3224 }
3225
3226 evlist__for_each_entry(session->evlist, evsel) {
3227 if (evsel->attr.type == PERF_TYPE_SOFTWARE &&
3228 (evsel->attr.config == PERF_COUNT_SW_PAGE_FAULTS_MAJ ||
3229 evsel->attr.config == PERF_COUNT_SW_PAGE_FAULTS_MIN ||
3230 evsel->attr.config == PERF_COUNT_SW_PAGE_FAULTS))
3231 evsel->handler = trace__pgfault;
3232 }
3233
3234 setup_pager();
3235
3236 err = perf_session__process_events(session);
3237 if (err)
3238 pr_err("Failed to process events, error %d", err);
3239
3240 else if (trace->summary)
3241 trace__fprintf_thread_summary(trace, trace->output);
3242
3243out:
3244 perf_session__delete(session);
3245
3246 return err;
3247}
3248
3249static size_t trace__fprintf_threads_header(FILE *fp)
3250{
3251 size_t printed;
3252
3253 printed = fprintf(fp, "\n Summary of events:\n\n");
3254
3255 return printed;
3256}
3257
3258DEFINE_RESORT_RB(syscall_stats, a->msecs > b->msecs,
3259 struct stats *stats;
3260 double msecs;
3261 int syscall;
3262)
3263{
3264 struct int_node *source = rb_entry(nd, struct int_node, rb_node);
3265 struct stats *stats = source->priv;
3266
3267 entry->syscall = source->i;
3268 entry->stats = stats;
3269 entry->msecs = stats ? (u64)stats->n * (avg_stats(stats) / NSEC_PER_MSEC) : 0;
3270}
3271
3272static size_t thread__dump_stats(struct thread_trace *ttrace,
3273 struct trace *trace, FILE *fp)
3274{
3275 size_t printed = 0;
3276 struct syscall *sc;
3277 struct rb_node *nd;
3278 DECLARE_RESORT_RB_INTLIST(syscall_stats, ttrace->syscall_stats);
3279
3280 if (syscall_stats == NULL)
3281 return 0;
3282
3283 printed += fprintf(fp, "\n");
3284
3285 printed += fprintf(fp, " syscall calls total min avg max stddev\n");
3286 printed += fprintf(fp, " (msec) (msec) (msec) (msec) (%%)\n");
3287 printed += fprintf(fp, " --------------- -------- --------- --------- --------- --------- ------\n");
3288
3289 resort_rb__for_each_entry(nd, syscall_stats) {
3290 struct stats *stats = syscall_stats_entry->stats;
3291 if (stats) {
3292 double min = (double)(stats->min) / NSEC_PER_MSEC;
3293 double max = (double)(stats->max) / NSEC_PER_MSEC;
3294 double avg = avg_stats(stats);
3295 double pct;
3296 u64 n = (u64) stats->n;
3297
3298 pct = avg ? 100.0 * stddev_stats(stats)/avg : 0.0;
3299 avg /= NSEC_PER_MSEC;
3300
3301 sc = &trace->syscalls.table[syscall_stats_entry->syscall];
3302 printed += fprintf(fp, " %-15s", sc->name);
3303 printed += fprintf(fp, " %8" PRIu64 " %9.3f %9.3f %9.3f",
3304 n, syscall_stats_entry->msecs, min, avg);
3305 printed += fprintf(fp, " %9.3f %9.2f%%\n", max, pct);
3306 }
3307 }
3308
3309 resort_rb__delete(syscall_stats);
3310 printed += fprintf(fp, "\n\n");
3311
3312 return printed;
3313}
3314
3315static size_t trace__fprintf_thread(FILE *fp, struct thread *thread, struct trace *trace)
3316{
3317 size_t printed = 0;
3318 struct thread_trace *ttrace = thread__priv(thread);
3319 double ratio;
3320
3321 if (ttrace == NULL)
3322 return 0;
3323
3324 ratio = (double)ttrace->nr_events / trace->nr_events * 100.0;
3325
3326 printed += fprintf(fp, " %s (%d), ", thread__comm_str(thread), thread->tid);
3327 printed += fprintf(fp, "%lu events, ", ttrace->nr_events);
3328 printed += fprintf(fp, "%.1f%%", ratio);
3329 if (ttrace->pfmaj)
3330 printed += fprintf(fp, ", %lu majfaults", ttrace->pfmaj);
3331 if (ttrace->pfmin)
3332 printed += fprintf(fp, ", %lu minfaults", ttrace->pfmin);
3333 if (trace->sched)
3334 printed += fprintf(fp, ", %.3f msec\n", ttrace->runtime_ms);
3335 else if (fputc('\n', fp) != EOF)
3336 ++printed;
3337
3338 printed += thread__dump_stats(ttrace, trace, fp);
3339
3340 return printed;
3341}
3342
3343static unsigned long thread__nr_events(struct thread_trace *ttrace)
3344{
3345 return ttrace ? ttrace->nr_events : 0;
3346}
3347
3348DEFINE_RESORT_RB(threads, (thread__nr_events(a->thread->priv) < thread__nr_events(b->thread->priv)),
3349 struct thread *thread;
3350)
3351{
3352 entry->thread = rb_entry(nd, struct thread, rb_node);
3353}
3354
3355static size_t trace__fprintf_thread_summary(struct trace *trace, FILE *fp)
3356{
3357 size_t printed = trace__fprintf_threads_header(fp);
3358 struct rb_node *nd;
3359 int i;
3360
3361 for (i = 0; i < THREADS__TABLE_SIZE; i++) {
3362 DECLARE_RESORT_RB_MACHINE_THREADS(threads, trace->host, i);
3363
3364 if (threads == NULL) {
3365 fprintf(fp, "%s", "Error sorting output by nr_events!\n");
3366 return 0;
3367 }
3368
3369 resort_rb__for_each_entry(nd, threads)
3370 printed += trace__fprintf_thread(fp, threads_entry->thread, trace);
3371
3372 resort_rb__delete(threads);
3373 }
3374 return printed;
3375}
3376
3377static int trace__set_duration(const struct option *opt, const char *str,
3378 int unset __maybe_unused)
3379{
3380 struct trace *trace = opt->value;
3381
3382 trace->duration_filter = atof(str);
3383 return 0;
3384}
3385
3386static int trace__set_filter_pids_from_option(const struct option *opt, const char *str,
3387 int unset __maybe_unused)
3388{
3389 int ret = -1;
3390 size_t i;
3391 struct trace *trace = opt->value;
3392
3393
3394
3395
3396 struct intlist *list = intlist__new(str);
3397
3398 if (list == NULL)
3399 return -1;
3400
3401 i = trace->filter_pids.nr = intlist__nr_entries(list) + 1;
3402 trace->filter_pids.entries = calloc(i, sizeof(pid_t));
3403
3404 if (trace->filter_pids.entries == NULL)
3405 goto out;
3406
3407 trace->filter_pids.entries[0] = getpid();
3408
3409 for (i = 1; i < trace->filter_pids.nr; ++i)
3410 trace->filter_pids.entries[i] = intlist__entry(list, i - 1)->i;
3411
3412 intlist__delete(list);
3413 ret = 0;
3414out:
3415 return ret;
3416}
3417
3418static int trace__open_output(struct trace *trace, const char *filename)
3419{
3420 struct stat st;
3421
3422 if (!stat(filename, &st) && st.st_size) {
3423 char oldname[PATH_MAX];
3424
3425 scnprintf(oldname, sizeof(oldname), "%s.old", filename);
3426 unlink(oldname);
3427 rename(filename, oldname);
3428 }
3429
3430 trace->output = fopen(filename, "w");
3431
3432 return trace->output == NULL ? -errno : 0;
3433}
3434
3435static int parse_pagefaults(const struct option *opt, const char *str,
3436 int unset __maybe_unused)
3437{
3438 int *trace_pgfaults = opt->value;
3439
3440 if (strcmp(str, "all") == 0)
3441 *trace_pgfaults |= TRACE_PFMAJ | TRACE_PFMIN;
3442 else if (strcmp(str, "maj") == 0)
3443 *trace_pgfaults |= TRACE_PFMAJ;
3444 else if (strcmp(str, "min") == 0)
3445 *trace_pgfaults |= TRACE_PFMIN;
3446 else
3447 return -1;
3448
3449 return 0;
3450}
3451
3452static void evlist__set_evsel_handler(struct perf_evlist *evlist, void *handler)
3453{
3454 struct perf_evsel *evsel;
3455
3456 evlist__for_each_entry(evlist, evsel)
3457 evsel->handler = handler;
3458}
3459
3460static int evlist__set_syscall_tp_fields(struct perf_evlist *evlist)
3461{
3462 struct perf_evsel *evsel;
3463
3464 evlist__for_each_entry(evlist, evsel) {
3465 if (evsel->priv || !evsel->tp_format)
3466 continue;
3467
3468 if (strcmp(evsel->tp_format->system, "syscalls"))
3469 continue;
3470
3471 if (perf_evsel__init_syscall_tp(evsel))
3472 return -1;
3473
3474 if (!strncmp(evsel->tp_format->name, "sys_enter_", 10)) {
3475 struct syscall_tp *sc = evsel->priv;
3476
3477 if (__tp_field__init_ptr(&sc->args, sc->id.offset + sizeof(u64)))
3478 return -1;
3479 } else if (!strncmp(evsel->tp_format->name, "sys_exit_", 9)) {
3480 struct syscall_tp *sc = evsel->priv;
3481
3482 if (__tp_field__init_uint(&sc->ret, sizeof(u64), sc->id.offset + sizeof(u64), evsel->needs_swap))
3483 return -1;
3484 }
3485 }
3486
3487 return 0;
3488}
3489
3490
3491
3492
3493
3494
3495
3496
3497
3498static int trace__parse_events_option(const struct option *opt, const char *str,
3499 int unset __maybe_unused)
3500{
3501 struct trace *trace = (struct trace *)opt->value;
3502 const char *s = str;
3503 char *sep = NULL, *lists[2] = { NULL, NULL, };
3504 int len = strlen(str) + 1, err = -1, list, idx;
3505 char *strace_groups_dir = system_path(STRACE_GROUPS_DIR);
3506 char group_name[PATH_MAX];
3507 struct syscall_fmt *fmt;
3508
3509 if (strace_groups_dir == NULL)
3510 return -1;
3511
3512 if (*s == '!') {
3513 ++s;
3514 trace->not_ev_qualifier = true;
3515 }
3516
3517 while (1) {
3518 if ((sep = strchr(s, ',')) != NULL)
3519 *sep = '\0';
3520
3521 list = 0;
3522 if (syscalltbl__id(trace->sctbl, s) >= 0 ||
3523 syscalltbl__strglobmatch_first(trace->sctbl, s, &idx) >= 0) {
3524 list = 1;
3525 goto do_concat;
3526 }
3527
3528 fmt = syscall_fmt__find_by_alias(s);
3529 if (fmt != NULL) {
3530 list = 1;
3531 s = fmt->name;
3532 } else {
3533 path__join(group_name, sizeof(group_name), strace_groups_dir, s);
3534 if (access(group_name, R_OK) == 0)
3535 list = 1;
3536 }
3537do_concat:
3538 if (lists[list]) {
3539 sprintf(lists[list] + strlen(lists[list]), ",%s", s);
3540 } else {
3541 lists[list] = malloc(len);
3542 if (lists[list] == NULL)
3543 goto out;
3544 strcpy(lists[list], s);
3545 }
3546
3547 if (!sep)
3548 break;
3549
3550 *sep = ',';
3551 s = sep + 1;
3552 }
3553
3554 if (lists[1] != NULL) {
3555 struct strlist_config slist_config = {
3556 .dirname = strace_groups_dir,
3557 };
3558
3559 trace->ev_qualifier = strlist__new(lists[1], &slist_config);
3560 if (trace->ev_qualifier == NULL) {
3561 fputs("Not enough memory to parse event qualifier", trace->output);
3562 goto out;
3563 }
3564
3565 if (trace__validate_ev_qualifier(trace))
3566 goto out;
3567 trace->trace_syscalls = true;
3568 }
3569
3570 err = 0;
3571
3572 if (lists[0]) {
3573 struct option o = OPT_CALLBACK('e', "event", &trace->evlist, "event",
3574 "event selector. use 'perf list' to list available events",
3575 parse_events_option);
3576 err = parse_events_option(&o, lists[0], 0);
3577 }
3578out:
3579 if (sep)
3580 *sep = ',';
3581
3582 return err;
3583}
3584
3585static int trace__parse_cgroups(const struct option *opt, const char *str, int unset)
3586{
3587 struct trace *trace = opt->value;
3588
3589 if (!list_empty(&trace->evlist->entries))
3590 return parse_cgroups(opt, str, unset);
3591
3592 trace->cgroup = evlist__findnew_cgroup(trace->evlist, str);
3593
3594 return 0;
3595}
3596
3597static struct bpf_map *bpf__find_map_by_name(const char *name)
3598{
3599 struct bpf_object *obj, *tmp;
3600
3601 bpf_object__for_each_safe(obj, tmp) {
3602 struct bpf_map *map = bpf_object__find_map_by_name(obj, name);
3603 if (map)
3604 return map;
3605
3606 }
3607
3608 return NULL;
3609}
3610
3611static void trace__set_bpf_map_filtered_pids(struct trace *trace)
3612{
3613 trace->filter_pids.map = bpf__find_map_by_name("pids_filtered");
3614}
3615
3616static void trace__set_bpf_map_syscalls(struct trace *trace)
3617{
3618 trace->syscalls.map = bpf__find_map_by_name("syscalls");
3619}
3620
3621static int trace__config(const char *var, const char *value, void *arg)
3622{
3623 struct trace *trace = arg;
3624 int err = 0;
3625
3626 if (!strcmp(var, "trace.add_events")) {
3627 struct option o = OPT_CALLBACK('e', "event", &trace->evlist, "event",
3628 "event selector. use 'perf list' to list available events",
3629 parse_events_option);
3630 err = parse_events_option(&o, value, 0);
3631 } else if (!strcmp(var, "trace.show_timestamp")) {
3632 trace->show_tstamp = perf_config_bool(var, value);
3633 } else if (!strcmp(var, "trace.show_duration")) {
3634 trace->show_duration = perf_config_bool(var, value);
3635 } else if (!strcmp(var, "trace.show_arg_names")) {
3636 trace->show_arg_names = perf_config_bool(var, value);
3637 if (!trace->show_arg_names)
3638 trace->show_zeros = true;
3639 } else if (!strcmp(var, "trace.show_zeros")) {
3640 bool new_show_zeros = perf_config_bool(var, value);
3641 if (!trace->show_arg_names && !new_show_zeros) {
3642 pr_warning("trace.show_zeros has to be set when trace.show_arg_names=no\n");
3643 goto out;
3644 }
3645 trace->show_zeros = new_show_zeros;
3646 } else if (!strcmp(var, "trace.show_prefix")) {
3647 trace->show_string_prefix = perf_config_bool(var, value);
3648 } else if (!strcmp(var, "trace.no_inherit")) {
3649 trace->opts.no_inherit = perf_config_bool(var, value);
3650 } else if (!strcmp(var, "trace.args_alignment")) {
3651 int args_alignment = 0;
3652 if (perf_config_int(&args_alignment, var, value) == 0)
3653 trace->args_alignment = args_alignment;
3654 }
3655out:
3656 return err;
3657}
3658
3659int cmd_trace(int argc, const char **argv)
3660{
3661 const char *trace_usage[] = {
3662 "perf trace [<options>] [<command>]",
3663 "perf trace [<options>] -- <command> [<options>]",
3664 "perf trace record [<options>] [<command>]",
3665 "perf trace record [<options>] -- <command> [<options>]",
3666 NULL
3667 };
3668 struct trace trace = {
3669 .syscalls = {
3670 . max = -1,
3671 },
3672 .opts = {
3673 .target = {
3674 .uid = UINT_MAX,
3675 .uses_mmap = true,
3676 },
3677 .user_freq = UINT_MAX,
3678 .user_interval = ULLONG_MAX,
3679 .no_buffering = true,
3680 .mmap_pages = UINT_MAX,
3681 },
3682 .output = stderr,
3683 .show_comm = true,
3684 .show_tstamp = true,
3685 .show_duration = true,
3686 .show_arg_names = true,
3687 .args_alignment = 70,
3688 .trace_syscalls = false,
3689 .kernel_syscallchains = false,
3690 .max_stack = UINT_MAX,
3691 .max_events = ULONG_MAX,
3692 };
3693 const char *map_dump_str = NULL;
3694 const char *output_name = NULL;
3695 const struct option trace_options[] = {
3696 OPT_CALLBACK('e', "event", &trace, "event",
3697 "event/syscall selector. use 'perf list' to list available events",
3698 trace__parse_events_option),
3699 OPT_BOOLEAN(0, "comm", &trace.show_comm,
3700 "show the thread COMM next to its id"),
3701 OPT_BOOLEAN(0, "tool_stats", &trace.show_tool_stats, "show tool stats"),
3702 OPT_CALLBACK(0, "expr", &trace, "expr", "list of syscalls/events to trace",
3703 trace__parse_events_option),
3704 OPT_STRING('o', "output", &output_name, "file", "output file name"),
3705 OPT_STRING('i', "input", &input_name, "file", "Analyze events in file"),
3706 OPT_STRING('p', "pid", &trace.opts.target.pid, "pid",
3707 "trace events on existing process id"),
3708 OPT_STRING('t', "tid", &trace.opts.target.tid, "tid",
3709 "trace events on existing thread id"),
3710 OPT_CALLBACK(0, "filter-pids", &trace, "CSV list of pids",
3711 "pids to filter (by the kernel)", trace__set_filter_pids_from_option),
3712 OPT_BOOLEAN('a', "all-cpus", &trace.opts.target.system_wide,
3713 "system-wide collection from all CPUs"),
3714 OPT_STRING('C', "cpu", &trace.opts.target.cpu_list, "cpu",
3715 "list of cpus to monitor"),
3716 OPT_BOOLEAN(0, "no-inherit", &trace.opts.no_inherit,
3717 "child tasks do not inherit counters"),
3718 OPT_CALLBACK('m', "mmap-pages", &trace.opts.mmap_pages, "pages",
3719 "number of mmap data pages",
3720 perf_evlist__parse_mmap_pages),
3721 OPT_STRING('u', "uid", &trace.opts.target.uid_str, "user",
3722 "user to profile"),
3723 OPT_CALLBACK(0, "duration", &trace, "float",
3724 "show only events with duration > N.M ms",
3725 trace__set_duration),
3726#ifdef HAVE_LIBBPF_SUPPORT
3727 OPT_STRING(0, "map-dump", &map_dump_str, "BPF map", "BPF map to periodically dump"),
3728#endif
3729 OPT_BOOLEAN(0, "sched", &trace.sched, "show blocking scheduler events"),
3730 OPT_INCR('v', "verbose", &verbose, "be more verbose"),
3731 OPT_BOOLEAN('T', "time", &trace.full_time,
3732 "Show full timestamp, not time relative to first start"),
3733 OPT_BOOLEAN(0, "failure", &trace.failure_only,
3734 "Show only syscalls that failed"),
3735 OPT_BOOLEAN('s', "summary", &trace.summary_only,
3736 "Show only syscall summary with statistics"),
3737 OPT_BOOLEAN('S', "with-summary", &trace.summary,
3738 "Show all syscalls and summary with statistics"),
3739 OPT_CALLBACK_DEFAULT('F', "pf", &trace.trace_pgfaults, "all|maj|min",
3740 "Trace pagefaults", parse_pagefaults, "maj"),
3741 OPT_BOOLEAN(0, "syscalls", &trace.trace_syscalls, "Trace syscalls"),
3742 OPT_BOOLEAN('f', "force", &trace.force, "don't complain, do it"),
3743 OPT_CALLBACK(0, "call-graph", &trace.opts,
3744 "record_mode[,record_size]", record_callchain_help,
3745 &record_parse_callchain_opt),
3746 OPT_BOOLEAN(0, "kernel-syscall-graph", &trace.kernel_syscallchains,
3747 "Show the kernel callchains on the syscall exit path"),
3748 OPT_ULONG(0, "max-events", &trace.max_events,
3749 "Set the maximum number of events to print, exit after that is reached. "),
3750 OPT_UINTEGER(0, "min-stack", &trace.min_stack,
3751 "Set the minimum stack depth when parsing the callchain, "
3752 "anything below the specified depth will be ignored."),
3753 OPT_UINTEGER(0, "max-stack", &trace.max_stack,
3754 "Set the maximum stack depth when parsing the callchain, "
3755 "anything beyond the specified depth will be ignored. "
3756 "Default: kernel.perf_event_max_stack or " __stringify(PERF_MAX_STACK_DEPTH)),
3757 OPT_BOOLEAN(0, "sort-events", &trace.sort_events,
3758 "Sort batch of events before processing, use if getting out of order events"),
3759 OPT_BOOLEAN(0, "print-sample", &trace.print_sample,
3760 "print the PERF_RECORD_SAMPLE PERF_SAMPLE_ info, for debugging"),
3761 OPT_UINTEGER(0, "proc-map-timeout", &proc_map_timeout,
3762 "per thread proc mmap processing timeout in ms"),
3763 OPT_CALLBACK('G', "cgroup", &trace, "name", "monitor event in cgroup name only",
3764 trace__parse_cgroups),
3765 OPT_UINTEGER('D', "delay", &trace.opts.initial_delay,
3766 "ms to wait before starting measurement after program "
3767 "start"),
3768 OPT_END()
3769 };
3770 bool __maybe_unused max_stack_user_set = true;
3771 bool mmap_pages_user_set = true;
3772 struct perf_evsel *evsel;
3773 const char * const trace_subcommands[] = { "record", NULL };
3774 int err = -1;
3775 char bf[BUFSIZ];
3776
3777 signal(SIGSEGV, sighandler_dump_stack);
3778 signal(SIGFPE, sighandler_dump_stack);
3779
3780 trace.evlist = perf_evlist__new();
3781 trace.sctbl = syscalltbl__new();
3782
3783 if (trace.evlist == NULL || trace.sctbl == NULL) {
3784 pr_err("Not enough memory to run!\n");
3785 err = -ENOMEM;
3786 goto out;
3787 }
3788
3789 err = perf_config(trace__config, &trace);
3790 if (err)
3791 goto out;
3792
3793 argc = parse_options_subcommand(argc, argv, trace_options, trace_subcommands,
3794 trace_usage, PARSE_OPT_STOP_AT_NON_OPTION);
3795
3796 if ((nr_cgroups || trace.cgroup) && !trace.opts.target.system_wide) {
3797 usage_with_options_msg(trace_usage, trace_options,
3798 "cgroup monitoring only available in system-wide mode");
3799 }
3800
3801 evsel = bpf__setup_output_event(trace.evlist, "__augmented_syscalls__");
3802 if (IS_ERR(evsel)) {
3803 bpf__strerror_setup_output_event(trace.evlist, PTR_ERR(evsel), bf, sizeof(bf));
3804 pr_err("ERROR: Setup trace syscalls enter failed: %s\n", bf);
3805 goto out;
3806 }
3807
3808 if (evsel) {
3809 trace.syscalls.events.augmented = evsel;
3810 trace__set_bpf_map_filtered_pids(&trace);
3811 trace__set_bpf_map_syscalls(&trace);
3812 }
3813
3814 err = bpf__setup_stdout(trace.evlist);
3815 if (err) {
3816 bpf__strerror_setup_stdout(trace.evlist, err, bf, sizeof(bf));
3817 pr_err("ERROR: Setup BPF stdout failed: %s\n", bf);
3818 goto out;
3819 }
3820
3821 err = -1;
3822
3823 if (map_dump_str) {
3824 trace.dump.map = bpf__find_map_by_name(map_dump_str);
3825 if (trace.dump.map == NULL) {
3826 pr_err("ERROR: BPF map \"%s\" not found\n", map_dump_str);
3827 goto out;
3828 }
3829 }
3830
3831 if (trace.trace_pgfaults) {
3832 trace.opts.sample_address = true;
3833 trace.opts.sample_time = true;
3834 }
3835
3836 if (trace.opts.mmap_pages == UINT_MAX)
3837 mmap_pages_user_set = false;
3838
3839 if (trace.max_stack == UINT_MAX) {
3840 trace.max_stack = input_name ? PERF_MAX_STACK_DEPTH : sysctl__max_stack();
3841 max_stack_user_set = false;
3842 }
3843
3844#ifdef HAVE_DWARF_UNWIND_SUPPORT
3845 if ((trace.min_stack || max_stack_user_set) && !callchain_param.enabled) {
3846 record_opts__parse_callchain(&trace.opts, &callchain_param, "dwarf", false);
3847 }
3848#endif
3849
3850 if (callchain_param.enabled) {
3851 if (!mmap_pages_user_set && geteuid() == 0)
3852 trace.opts.mmap_pages = perf_event_mlock_kb_in_pages() * 4;
3853
3854 symbol_conf.use_callchain = true;
3855 }
3856
3857 if (trace.evlist->nr_entries > 0) {
3858 evlist__set_evsel_handler(trace.evlist, trace__event_handler);
3859 if (evlist__set_syscall_tp_fields(trace.evlist)) {
3860 perror("failed to set syscalls:* tracepoint fields");
3861 goto out;
3862 }
3863 }
3864
3865 if (trace.sort_events) {
3866 ordered_events__init(&trace.oe.data, ordered_events__deliver_event, &trace);
3867 ordered_events__set_copy_on_queue(&trace.oe.data, true);
3868 }
3869
3870
3871
3872
3873
3874
3875
3876
3877
3878
3879
3880
3881 if (trace.syscalls.events.augmented) {
3882 evlist__for_each_entry(trace.evlist, evsel) {
3883 bool raw_syscalls_sys_exit = strcmp(perf_evsel__name(evsel), "raw_syscalls:sys_exit") == 0;
3884
3885 if (raw_syscalls_sys_exit) {
3886 trace.raw_augmented_syscalls = true;
3887 goto init_augmented_syscall_tp;
3888 }
3889
3890 if (trace.syscalls.events.augmented->priv == NULL &&
3891 strstr(perf_evsel__name(evsel), "syscalls:sys_enter")) {
3892 struct perf_evsel *augmented = trace.syscalls.events.augmented;
3893 if (perf_evsel__init_augmented_syscall_tp(augmented, evsel) ||
3894 perf_evsel__init_augmented_syscall_tp_args(augmented))
3895 goto out;
3896 augmented->handler = trace__sys_enter;
3897 }
3898
3899 if (strstarts(perf_evsel__name(evsel), "syscalls:sys_exit_")) {
3900 struct syscall_tp *sc;
3901init_augmented_syscall_tp:
3902 if (perf_evsel__init_augmented_syscall_tp(evsel, evsel))
3903 goto out;
3904 sc = evsel->priv;
3905
3906
3907
3908
3909
3910
3911
3912
3913
3914
3915
3916
3917
3918
3919
3920
3921
3922
3923
3924 if (trace.raw_augmented_syscalls)
3925 trace.raw_augmented_syscalls_args_size = (6 + 1) * sizeof(long) + sc->id.offset;
3926 perf_evsel__init_augmented_syscall_tp_ret(evsel);
3927 evsel->handler = trace__sys_exit;
3928 }
3929 }
3930 }
3931
3932 if ((argc >= 1) && (strcmp(argv[0], "record") == 0))
3933 return trace__record(&trace, argc-1, &argv[1]);
3934
3935
3936 if (trace.summary_only)
3937 trace.summary = trace.summary_only;
3938
3939 if (!trace.trace_syscalls && !trace.trace_pgfaults &&
3940 trace.evlist->nr_entries == 0 ) {
3941 trace.trace_syscalls = true;
3942 }
3943
3944 if (output_name != NULL) {
3945 err = trace__open_output(&trace, output_name);
3946 if (err < 0) {
3947 perror("failed to create output file");
3948 goto out;
3949 }
3950 }
3951
3952 err = target__validate(&trace.opts.target);
3953 if (err) {
3954 target__strerror(&trace.opts.target, err, bf, sizeof(bf));
3955 fprintf(trace.output, "%s", bf);
3956 goto out_close;
3957 }
3958
3959 err = target__parse_uid(&trace.opts.target);
3960 if (err) {
3961 target__strerror(&trace.opts.target, err, bf, sizeof(bf));
3962 fprintf(trace.output, "%s", bf);
3963 goto out_close;
3964 }
3965
3966 if (!argc && target__none(&trace.opts.target))
3967 trace.opts.target.system_wide = true;
3968
3969 if (input_name)
3970 err = trace__replay(&trace);
3971 else
3972 err = trace__run(&trace, argc, argv);
3973
3974out_close:
3975 if (output_name != NULL)
3976 fclose(trace.output);
3977out:
3978 return err;
3979}
3980