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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
[deliverable/linux.git] / tools / perf / builtin-trace.c
1 /*
2 * builtin-trace.c
3 *
4 * Builtin 'trace' command:
5 *
6 * Display a continuously updated trace of any workload, CPU, specific PID,
7 * system wide, etc. Default format is loosely strace like, but any other
8 * event may be specified using --event.
9 *
10 * Copyright (C) 2012, 2013, 2014, 2015 Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
11 *
12 * Initially based on the 'trace' prototype by Thomas Gleixner:
13 *
14 * http://lwn.net/Articles/415728/ ("Announcing a new utility: 'trace'")
15 *
16 * Released under the GPL v2. (and only v2, not any later version)
17 */
18
19 #include <traceevent/event-parse.h>
20 #include <api/fs/tracing_path.h>
21 #include "builtin.h"
22 #include "util/color.h"
23 #include "util/debug.h"
24 #include "util/evlist.h"
25 #include <subcmd/exec-cmd.h>
26 #include "util/machine.h"
27 #include "util/session.h"
28 #include "util/thread.h"
29 #include <subcmd/parse-options.h>
30 #include "util/strlist.h"
31 #include "util/intlist.h"
32 #include "util/thread_map.h"
33 #include "util/stat.h"
34 #include "trace-event.h"
35 #include "util/parse-events.h"
36 #include "util/bpf-loader.h"
37
38 #include <libaudit.h>
39 #include <stdlib.h>
40 #include <sys/mman.h>
41 #include <linux/futex.h>
42 #include <linux/err.h>
43
44 /* For older distros: */
45 #ifndef MAP_STACK
46 # define MAP_STACK 0x20000
47 #endif
48
49 #ifndef MADV_HWPOISON
50 # define MADV_HWPOISON 100
51
52 #endif
53
54 #ifndef MADV_MERGEABLE
55 # define MADV_MERGEABLE 12
56 #endif
57
58 #ifndef MADV_UNMERGEABLE
59 # define MADV_UNMERGEABLE 13
60 #endif
61
62 #ifndef EFD_SEMAPHORE
63 # define EFD_SEMAPHORE 1
64 #endif
65
66 #ifndef EFD_NONBLOCK
67 # define EFD_NONBLOCK 00004000
68 #endif
69
70 #ifndef EFD_CLOEXEC
71 # define EFD_CLOEXEC 02000000
72 #endif
73
74 #ifndef O_CLOEXEC
75 # define O_CLOEXEC 02000000
76 #endif
77
78 #ifndef SOCK_DCCP
79 # define SOCK_DCCP 6
80 #endif
81
82 #ifndef SOCK_CLOEXEC
83 # define SOCK_CLOEXEC 02000000
84 #endif
85
86 #ifndef SOCK_NONBLOCK
87 # define SOCK_NONBLOCK 00004000
88 #endif
89
90 #ifndef MSG_CMSG_CLOEXEC
91 # define MSG_CMSG_CLOEXEC 0x40000000
92 #endif
93
94 #ifndef PERF_FLAG_FD_NO_GROUP
95 # define PERF_FLAG_FD_NO_GROUP (1UL << 0)
96 #endif
97
98 #ifndef PERF_FLAG_FD_OUTPUT
99 # define PERF_FLAG_FD_OUTPUT (1UL << 1)
100 #endif
101
102 #ifndef PERF_FLAG_PID_CGROUP
103 # define PERF_FLAG_PID_CGROUP (1UL << 2) /* pid=cgroup id, per-cpu mode only */
104 #endif
105
106 #ifndef PERF_FLAG_FD_CLOEXEC
107 # define PERF_FLAG_FD_CLOEXEC (1UL << 3) /* O_CLOEXEC */
108 #endif
109
110
111 struct tp_field {
112 int offset;
113 union {
114 u64 (*integer)(struct tp_field *field, struct perf_sample *sample);
115 void *(*pointer)(struct tp_field *field, struct perf_sample *sample);
116 };
117 };
118
119 #define TP_UINT_FIELD(bits) \
120 static u64 tp_field__u##bits(struct tp_field *field, struct perf_sample *sample) \
121 { \
122 u##bits value; \
123 memcpy(&value, sample->raw_data + field->offset, sizeof(value)); \
124 return value; \
125 }
126
127 TP_UINT_FIELD(8);
128 TP_UINT_FIELD(16);
129 TP_UINT_FIELD(32);
130 TP_UINT_FIELD(64);
131
132 #define TP_UINT_FIELD__SWAPPED(bits) \
133 static u64 tp_field__swapped_u##bits(struct tp_field *field, struct perf_sample *sample) \
134 { \
135 u##bits value; \
136 memcpy(&value, sample->raw_data + field->offset, sizeof(value)); \
137 return bswap_##bits(value);\
138 }
139
140 TP_UINT_FIELD__SWAPPED(16);
141 TP_UINT_FIELD__SWAPPED(32);
142 TP_UINT_FIELD__SWAPPED(64);
143
144 static int tp_field__init_uint(struct tp_field *field,
145 struct format_field *format_field,
146 bool needs_swap)
147 {
148 field->offset = format_field->offset;
149
150 switch (format_field->size) {
151 case 1:
152 field->integer = tp_field__u8;
153 break;
154 case 2:
155 field->integer = needs_swap ? tp_field__swapped_u16 : tp_field__u16;
156 break;
157 case 4:
158 field->integer = needs_swap ? tp_field__swapped_u32 : tp_field__u32;
159 break;
160 case 8:
161 field->integer = needs_swap ? tp_field__swapped_u64 : tp_field__u64;
162 break;
163 default:
164 return -1;
165 }
166
167 return 0;
168 }
169
170 static void *tp_field__ptr(struct tp_field *field, struct perf_sample *sample)
171 {
172 return sample->raw_data + field->offset;
173 }
174
175 static int tp_field__init_ptr(struct tp_field *field, struct format_field *format_field)
176 {
177 field->offset = format_field->offset;
178 field->pointer = tp_field__ptr;
179 return 0;
180 }
181
182 struct syscall_tp {
183 struct tp_field id;
184 union {
185 struct tp_field args, ret;
186 };
187 };
188
189 static int perf_evsel__init_tp_uint_field(struct perf_evsel *evsel,
190 struct tp_field *field,
191 const char *name)
192 {
193 struct format_field *format_field = perf_evsel__field(evsel, name);
194
195 if (format_field == NULL)
196 return -1;
197
198 return tp_field__init_uint(field, format_field, evsel->needs_swap);
199 }
200
201 #define perf_evsel__init_sc_tp_uint_field(evsel, name) \
202 ({ struct syscall_tp *sc = evsel->priv;\
203 perf_evsel__init_tp_uint_field(evsel, &sc->name, #name); })
204
205 static int perf_evsel__init_tp_ptr_field(struct perf_evsel *evsel,
206 struct tp_field *field,
207 const char *name)
208 {
209 struct format_field *format_field = perf_evsel__field(evsel, name);
210
211 if (format_field == NULL)
212 return -1;
213
214 return tp_field__init_ptr(field, format_field);
215 }
216
217 #define perf_evsel__init_sc_tp_ptr_field(evsel, name) \
218 ({ struct syscall_tp *sc = evsel->priv;\
219 perf_evsel__init_tp_ptr_field(evsel, &sc->name, #name); })
220
221 static void perf_evsel__delete_priv(struct perf_evsel *evsel)
222 {
223 zfree(&evsel->priv);
224 perf_evsel__delete(evsel);
225 }
226
227 static int perf_evsel__init_syscall_tp(struct perf_evsel *evsel, void *handler)
228 {
229 evsel->priv = malloc(sizeof(struct syscall_tp));
230 if (evsel->priv != NULL) {
231 if (perf_evsel__init_sc_tp_uint_field(evsel, id))
232 goto out_delete;
233
234 evsel->handler = handler;
235 return 0;
236 }
237
238 return -ENOMEM;
239
240 out_delete:
241 zfree(&evsel->priv);
242 return -ENOENT;
243 }
244
245 static struct perf_evsel *perf_evsel__syscall_newtp(const char *direction, void *handler)
246 {
247 struct perf_evsel *evsel = perf_evsel__newtp("raw_syscalls", direction);
248
249 /* older kernel (e.g., RHEL6) use syscalls:{enter,exit} */
250 if (IS_ERR(evsel))
251 evsel = perf_evsel__newtp("syscalls", direction);
252
253 if (IS_ERR(evsel))
254 return NULL;
255
256 if (perf_evsel__init_syscall_tp(evsel, handler))
257 goto out_delete;
258
259 return evsel;
260
261 out_delete:
262 perf_evsel__delete_priv(evsel);
263 return NULL;
264 }
265
266 #define perf_evsel__sc_tp_uint(evsel, name, sample) \
267 ({ struct syscall_tp *fields = evsel->priv; \
268 fields->name.integer(&fields->name, sample); })
269
270 #define perf_evsel__sc_tp_ptr(evsel, name, sample) \
271 ({ struct syscall_tp *fields = evsel->priv; \
272 fields->name.pointer(&fields->name, sample); })
273
274 struct syscall_arg {
275 unsigned long val;
276 struct thread *thread;
277 struct trace *trace;
278 void *parm;
279 u8 idx;
280 u8 mask;
281 };
282
283 struct strarray {
284 int offset;
285 int nr_entries;
286 const char **entries;
287 };
288
289 #define DEFINE_STRARRAY(array) struct strarray strarray__##array = { \
290 .nr_entries = ARRAY_SIZE(array), \
291 .entries = array, \
292 }
293
294 #define DEFINE_STRARRAY_OFFSET(array, off) struct strarray strarray__##array = { \
295 .offset = off, \
296 .nr_entries = ARRAY_SIZE(array), \
297 .entries = array, \
298 }
299
300 static size_t __syscall_arg__scnprintf_strarray(char *bf, size_t size,
301 const char *intfmt,
302 struct syscall_arg *arg)
303 {
304 struct strarray *sa = arg->parm;
305 int idx = arg->val - sa->offset;
306
307 if (idx < 0 || idx >= sa->nr_entries)
308 return scnprintf(bf, size, intfmt, arg->val);
309
310 return scnprintf(bf, size, "%s", sa->entries[idx]);
311 }
312
313 static size_t syscall_arg__scnprintf_strarray(char *bf, size_t size,
314 struct syscall_arg *arg)
315 {
316 return __syscall_arg__scnprintf_strarray(bf, size, "%d", arg);
317 }
318
319 #define SCA_STRARRAY syscall_arg__scnprintf_strarray
320
321 #if defined(__i386__) || defined(__x86_64__)
322 /*
323 * FIXME: Make this available to all arches as soon as the ioctl beautifier
324 * gets rewritten to support all arches.
325 */
326 static size_t syscall_arg__scnprintf_strhexarray(char *bf, size_t size,
327 struct syscall_arg *arg)
328 {
329 return __syscall_arg__scnprintf_strarray(bf, size, "%#x", arg);
330 }
331
332 #define SCA_STRHEXARRAY syscall_arg__scnprintf_strhexarray
333 #endif /* defined(__i386__) || defined(__x86_64__) */
334
335 static size_t syscall_arg__scnprintf_fd(char *bf, size_t size,
336 struct syscall_arg *arg);
337
338 #define SCA_FD syscall_arg__scnprintf_fd
339
340 static size_t syscall_arg__scnprintf_fd_at(char *bf, size_t size,
341 struct syscall_arg *arg)
342 {
343 int fd = arg->val;
344
345 if (fd == AT_FDCWD)
346 return scnprintf(bf, size, "CWD");
347
348 return syscall_arg__scnprintf_fd(bf, size, arg);
349 }
350
351 #define SCA_FDAT syscall_arg__scnprintf_fd_at
352
353 static size_t syscall_arg__scnprintf_close_fd(char *bf, size_t size,
354 struct syscall_arg *arg);
355
356 #define SCA_CLOSE_FD syscall_arg__scnprintf_close_fd
357
358 static size_t syscall_arg__scnprintf_hex(char *bf, size_t size,
359 struct syscall_arg *arg)
360 {
361 return scnprintf(bf, size, "%#lx", arg->val);
362 }
363
364 #define SCA_HEX syscall_arg__scnprintf_hex
365
366 static size_t syscall_arg__scnprintf_int(char *bf, size_t size,
367 struct syscall_arg *arg)
368 {
369 return scnprintf(bf, size, "%d", arg->val);
370 }
371
372 #define SCA_INT syscall_arg__scnprintf_int
373
374 static size_t syscall_arg__scnprintf_mmap_prot(char *bf, size_t size,
375 struct syscall_arg *arg)
376 {
377 int printed = 0, prot = arg->val;
378
379 if (prot == PROT_NONE)
380 return scnprintf(bf, size, "NONE");
381 #define P_MMAP_PROT(n) \
382 if (prot & PROT_##n) { \
383 printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \
384 prot &= ~PROT_##n; \
385 }
386
387 P_MMAP_PROT(EXEC);
388 P_MMAP_PROT(READ);
389 P_MMAP_PROT(WRITE);
390 #ifdef PROT_SEM
391 P_MMAP_PROT(SEM);
392 #endif
393 P_MMAP_PROT(GROWSDOWN);
394 P_MMAP_PROT(GROWSUP);
395 #undef P_MMAP_PROT
396
397 if (prot)
398 printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", prot);
399
400 return printed;
401 }
402
403 #define SCA_MMAP_PROT syscall_arg__scnprintf_mmap_prot
404
405 static size_t syscall_arg__scnprintf_mmap_flags(char *bf, size_t size,
406 struct syscall_arg *arg)
407 {
408 int printed = 0, flags = arg->val;
409
410 #define P_MMAP_FLAG(n) \
411 if (flags & MAP_##n) { \
412 printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \
413 flags &= ~MAP_##n; \
414 }
415
416 P_MMAP_FLAG(SHARED);
417 P_MMAP_FLAG(PRIVATE);
418 #ifdef MAP_32BIT
419 P_MMAP_FLAG(32BIT);
420 #endif
421 P_MMAP_FLAG(ANONYMOUS);
422 P_MMAP_FLAG(DENYWRITE);
423 P_MMAP_FLAG(EXECUTABLE);
424 P_MMAP_FLAG(FILE);
425 P_MMAP_FLAG(FIXED);
426 P_MMAP_FLAG(GROWSDOWN);
427 #ifdef MAP_HUGETLB
428 P_MMAP_FLAG(HUGETLB);
429 #endif
430 P_MMAP_FLAG(LOCKED);
431 P_MMAP_FLAG(NONBLOCK);
432 P_MMAP_FLAG(NORESERVE);
433 P_MMAP_FLAG(POPULATE);
434 P_MMAP_FLAG(STACK);
435 #ifdef MAP_UNINITIALIZED
436 P_MMAP_FLAG(UNINITIALIZED);
437 #endif
438 #undef P_MMAP_FLAG
439
440 if (flags)
441 printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags);
442
443 return printed;
444 }
445
446 #define SCA_MMAP_FLAGS syscall_arg__scnprintf_mmap_flags
447
448 static size_t syscall_arg__scnprintf_mremap_flags(char *bf, size_t size,
449 struct syscall_arg *arg)
450 {
451 int printed = 0, flags = arg->val;
452
453 #define P_MREMAP_FLAG(n) \
454 if (flags & MREMAP_##n) { \
455 printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \
456 flags &= ~MREMAP_##n; \
457 }
458
459 P_MREMAP_FLAG(MAYMOVE);
460 #ifdef MREMAP_FIXED
461 P_MREMAP_FLAG(FIXED);
462 #endif
463 #undef P_MREMAP_FLAG
464
465 if (flags)
466 printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags);
467
468 return printed;
469 }
470
471 #define SCA_MREMAP_FLAGS syscall_arg__scnprintf_mremap_flags
472
473 static size_t syscall_arg__scnprintf_madvise_behavior(char *bf, size_t size,
474 struct syscall_arg *arg)
475 {
476 int behavior = arg->val;
477
478 switch (behavior) {
479 #define P_MADV_BHV(n) case MADV_##n: return scnprintf(bf, size, #n)
480 P_MADV_BHV(NORMAL);
481 P_MADV_BHV(RANDOM);
482 P_MADV_BHV(SEQUENTIAL);
483 P_MADV_BHV(WILLNEED);
484 P_MADV_BHV(DONTNEED);
485 P_MADV_BHV(REMOVE);
486 P_MADV_BHV(DONTFORK);
487 P_MADV_BHV(DOFORK);
488 P_MADV_BHV(HWPOISON);
489 #ifdef MADV_SOFT_OFFLINE
490 P_MADV_BHV(SOFT_OFFLINE);
491 #endif
492 P_MADV_BHV(MERGEABLE);
493 P_MADV_BHV(UNMERGEABLE);
494 #ifdef MADV_HUGEPAGE
495 P_MADV_BHV(HUGEPAGE);
496 #endif
497 #ifdef MADV_NOHUGEPAGE
498 P_MADV_BHV(NOHUGEPAGE);
499 #endif
500 #ifdef MADV_DONTDUMP
501 P_MADV_BHV(DONTDUMP);
502 #endif
503 #ifdef MADV_DODUMP
504 P_MADV_BHV(DODUMP);
505 #endif
506 #undef P_MADV_PHV
507 default: break;
508 }
509
510 return scnprintf(bf, size, "%#x", behavior);
511 }
512
513 #define SCA_MADV_BHV syscall_arg__scnprintf_madvise_behavior
514
515 static size_t syscall_arg__scnprintf_flock(char *bf, size_t size,
516 struct syscall_arg *arg)
517 {
518 int printed = 0, op = arg->val;
519
520 if (op == 0)
521 return scnprintf(bf, size, "NONE");
522 #define P_CMD(cmd) \
523 if ((op & LOCK_##cmd) == LOCK_##cmd) { \
524 printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #cmd); \
525 op &= ~LOCK_##cmd; \
526 }
527
528 P_CMD(SH);
529 P_CMD(EX);
530 P_CMD(NB);
531 P_CMD(UN);
532 P_CMD(MAND);
533 P_CMD(RW);
534 P_CMD(READ);
535 P_CMD(WRITE);
536 #undef P_OP
537
538 if (op)
539 printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", op);
540
541 return printed;
542 }
543
544 #define SCA_FLOCK syscall_arg__scnprintf_flock
545
546 static size_t syscall_arg__scnprintf_futex_op(char *bf, size_t size, struct syscall_arg *arg)
547 {
548 enum syscall_futex_args {
549 SCF_UADDR = (1 << 0),
550 SCF_OP = (1 << 1),
551 SCF_VAL = (1 << 2),
552 SCF_TIMEOUT = (1 << 3),
553 SCF_UADDR2 = (1 << 4),
554 SCF_VAL3 = (1 << 5),
555 };
556 int op = arg->val;
557 int cmd = op & FUTEX_CMD_MASK;
558 size_t printed = 0;
559
560 switch (cmd) {
561 #define P_FUTEX_OP(n) case FUTEX_##n: printed = scnprintf(bf, size, #n);
562 P_FUTEX_OP(WAIT); arg->mask |= SCF_VAL3|SCF_UADDR2; break;
563 P_FUTEX_OP(WAKE); arg->mask |= SCF_VAL3|SCF_UADDR2|SCF_TIMEOUT; break;
564 P_FUTEX_OP(FD); arg->mask |= SCF_VAL3|SCF_UADDR2|SCF_TIMEOUT; break;
565 P_FUTEX_OP(REQUEUE); arg->mask |= SCF_VAL3|SCF_TIMEOUT; break;
566 P_FUTEX_OP(CMP_REQUEUE); arg->mask |= SCF_TIMEOUT; break;
567 P_FUTEX_OP(CMP_REQUEUE_PI); arg->mask |= SCF_TIMEOUT; break;
568 P_FUTEX_OP(WAKE_OP); break;
569 P_FUTEX_OP(LOCK_PI); arg->mask |= SCF_VAL3|SCF_UADDR2|SCF_TIMEOUT; break;
570 P_FUTEX_OP(UNLOCK_PI); arg->mask |= SCF_VAL3|SCF_UADDR2|SCF_TIMEOUT; break;
571 P_FUTEX_OP(TRYLOCK_PI); arg->mask |= SCF_VAL3|SCF_UADDR2; break;
572 P_FUTEX_OP(WAIT_BITSET); arg->mask |= SCF_UADDR2; break;
573 P_FUTEX_OP(WAKE_BITSET); arg->mask |= SCF_UADDR2; break;
574 P_FUTEX_OP(WAIT_REQUEUE_PI); break;
575 default: printed = scnprintf(bf, size, "%#x", cmd); break;
576 }
577
578 if (op & FUTEX_PRIVATE_FLAG)
579 printed += scnprintf(bf + printed, size - printed, "|PRIV");
580
581 if (op & FUTEX_CLOCK_REALTIME)
582 printed += scnprintf(bf + printed, size - printed, "|CLKRT");
583
584 return printed;
585 }
586
587 #define SCA_FUTEX_OP syscall_arg__scnprintf_futex_op
588
589 static const char *bpf_cmd[] = {
590 "MAP_CREATE", "MAP_LOOKUP_ELEM", "MAP_UPDATE_ELEM", "MAP_DELETE_ELEM",
591 "MAP_GET_NEXT_KEY", "PROG_LOAD",
592 };
593 static DEFINE_STRARRAY(bpf_cmd);
594
595 static const char *epoll_ctl_ops[] = { "ADD", "DEL", "MOD", };
596 static DEFINE_STRARRAY_OFFSET(epoll_ctl_ops, 1);
597
598 static const char *itimers[] = { "REAL", "VIRTUAL", "PROF", };
599 static DEFINE_STRARRAY(itimers);
600
601 static const char *keyctl_options[] = {
602 "GET_KEYRING_ID", "JOIN_SESSION_KEYRING", "UPDATE", "REVOKE", "CHOWN",
603 "SETPERM", "DESCRIBE", "CLEAR", "LINK", "UNLINK", "SEARCH", "READ",
604 "INSTANTIATE", "NEGATE", "SET_REQKEY_KEYRING", "SET_TIMEOUT",
605 "ASSUME_AUTHORITY", "GET_SECURITY", "SESSION_TO_PARENT", "REJECT",
606 "INSTANTIATE_IOV", "INVALIDATE", "GET_PERSISTENT",
607 };
608 static DEFINE_STRARRAY(keyctl_options);
609
610 static const char *whences[] = { "SET", "CUR", "END",
611 #ifdef SEEK_DATA
612 "DATA",
613 #endif
614 #ifdef SEEK_HOLE
615 "HOLE",
616 #endif
617 };
618 static DEFINE_STRARRAY(whences);
619
620 static const char *fcntl_cmds[] = {
621 "DUPFD", "GETFD", "SETFD", "GETFL", "SETFL", "GETLK", "SETLK",
622 "SETLKW", "SETOWN", "GETOWN", "SETSIG", "GETSIG", "F_GETLK64",
623 "F_SETLK64", "F_SETLKW64", "F_SETOWN_EX", "F_GETOWN_EX",
624 "F_GETOWNER_UIDS",
625 };
626 static DEFINE_STRARRAY(fcntl_cmds);
627
628 static const char *rlimit_resources[] = {
629 "CPU", "FSIZE", "DATA", "STACK", "CORE", "RSS", "NPROC", "NOFILE",
630 "MEMLOCK", "AS", "LOCKS", "SIGPENDING", "MSGQUEUE", "NICE", "RTPRIO",
631 "RTTIME",
632 };
633 static DEFINE_STRARRAY(rlimit_resources);
634
635 static const char *sighow[] = { "BLOCK", "UNBLOCK", "SETMASK", };
636 static DEFINE_STRARRAY(sighow);
637
638 static const char *clockid[] = {
639 "REALTIME", "MONOTONIC", "PROCESS_CPUTIME_ID", "THREAD_CPUTIME_ID",
640 "MONOTONIC_RAW", "REALTIME_COARSE", "MONOTONIC_COARSE", "BOOTTIME",
641 "REALTIME_ALARM", "BOOTTIME_ALARM", "SGI_CYCLE", "TAI"
642 };
643 static DEFINE_STRARRAY(clockid);
644
645 static const char *socket_families[] = {
646 "UNSPEC", "LOCAL", "INET", "AX25", "IPX", "APPLETALK", "NETROM",
647 "BRIDGE", "ATMPVC", "X25", "INET6", "ROSE", "DECnet", "NETBEUI",
648 "SECURITY", "KEY", "NETLINK", "PACKET", "ASH", "ECONET", "ATMSVC",
649 "RDS", "SNA", "IRDA", "PPPOX", "WANPIPE", "LLC", "IB", "CAN", "TIPC",
650 "BLUETOOTH", "IUCV", "RXRPC", "ISDN", "PHONET", "IEEE802154", "CAIF",
651 "ALG", "NFC", "VSOCK",
652 };
653 static DEFINE_STRARRAY(socket_families);
654
655 #ifndef SOCK_TYPE_MASK
656 #define SOCK_TYPE_MASK 0xf
657 #endif
658
659 static size_t syscall_arg__scnprintf_socket_type(char *bf, size_t size,
660 struct syscall_arg *arg)
661 {
662 size_t printed;
663 int type = arg->val,
664 flags = type & ~SOCK_TYPE_MASK;
665
666 type &= SOCK_TYPE_MASK;
667 /*
668 * Can't use a strarray, MIPS may override for ABI reasons.
669 */
670 switch (type) {
671 #define P_SK_TYPE(n) case SOCK_##n: printed = scnprintf(bf, size, #n); break;
672 P_SK_TYPE(STREAM);
673 P_SK_TYPE(DGRAM);
674 P_SK_TYPE(RAW);
675 P_SK_TYPE(RDM);
676 P_SK_TYPE(SEQPACKET);
677 P_SK_TYPE(DCCP);
678 P_SK_TYPE(PACKET);
679 #undef P_SK_TYPE
680 default:
681 printed = scnprintf(bf, size, "%#x", type);
682 }
683
684 #define P_SK_FLAG(n) \
685 if (flags & SOCK_##n) { \
686 printed += scnprintf(bf + printed, size - printed, "|%s", #n); \
687 flags &= ~SOCK_##n; \
688 }
689
690 P_SK_FLAG(CLOEXEC);
691 P_SK_FLAG(NONBLOCK);
692 #undef P_SK_FLAG
693
694 if (flags)
695 printed += scnprintf(bf + printed, size - printed, "|%#x", flags);
696
697 return printed;
698 }
699
700 #define SCA_SK_TYPE syscall_arg__scnprintf_socket_type
701
702 #ifndef MSG_PROBE
703 #define MSG_PROBE 0x10
704 #endif
705 #ifndef MSG_WAITFORONE
706 #define MSG_WAITFORONE 0x10000
707 #endif
708 #ifndef MSG_SENDPAGE_NOTLAST
709 #define MSG_SENDPAGE_NOTLAST 0x20000
710 #endif
711 #ifndef MSG_FASTOPEN
712 #define MSG_FASTOPEN 0x20000000
713 #endif
714
715 static size_t syscall_arg__scnprintf_msg_flags(char *bf, size_t size,
716 struct syscall_arg *arg)
717 {
718 int printed = 0, flags = arg->val;
719
720 if (flags == 0)
721 return scnprintf(bf, size, "NONE");
722 #define P_MSG_FLAG(n) \
723 if (flags & MSG_##n) { \
724 printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \
725 flags &= ~MSG_##n; \
726 }
727
728 P_MSG_FLAG(OOB);
729 P_MSG_FLAG(PEEK);
730 P_MSG_FLAG(DONTROUTE);
731 P_MSG_FLAG(TRYHARD);
732 P_MSG_FLAG(CTRUNC);
733 P_MSG_FLAG(PROBE);
734 P_MSG_FLAG(TRUNC);
735 P_MSG_FLAG(DONTWAIT);
736 P_MSG_FLAG(EOR);
737 P_MSG_FLAG(WAITALL);
738 P_MSG_FLAG(FIN);
739 P_MSG_FLAG(SYN);
740 P_MSG_FLAG(CONFIRM);
741 P_MSG_FLAG(RST);
742 P_MSG_FLAG(ERRQUEUE);
743 P_MSG_FLAG(NOSIGNAL);
744 P_MSG_FLAG(MORE);
745 P_MSG_FLAG(WAITFORONE);
746 P_MSG_FLAG(SENDPAGE_NOTLAST);
747 P_MSG_FLAG(FASTOPEN);
748 P_MSG_FLAG(CMSG_CLOEXEC);
749 #undef P_MSG_FLAG
750
751 if (flags)
752 printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags);
753
754 return printed;
755 }
756
757 #define SCA_MSG_FLAGS syscall_arg__scnprintf_msg_flags
758
759 static size_t syscall_arg__scnprintf_access_mode(char *bf, size_t size,
760 struct syscall_arg *arg)
761 {
762 size_t printed = 0;
763 int mode = arg->val;
764
765 if (mode == F_OK) /* 0 */
766 return scnprintf(bf, size, "F");
767 #define P_MODE(n) \
768 if (mode & n##_OK) { \
769 printed += scnprintf(bf + printed, size - printed, "%s", #n); \
770 mode &= ~n##_OK; \
771 }
772
773 P_MODE(R);
774 P_MODE(W);
775 P_MODE(X);
776 #undef P_MODE
777
778 if (mode)
779 printed += scnprintf(bf + printed, size - printed, "|%#x", mode);
780
781 return printed;
782 }
783
784 #define SCA_ACCMODE syscall_arg__scnprintf_access_mode
785
786 static size_t syscall_arg__scnprintf_filename(char *bf, size_t size,
787 struct syscall_arg *arg);
788
789 #define SCA_FILENAME syscall_arg__scnprintf_filename
790
791 static size_t syscall_arg__scnprintf_open_flags(char *bf, size_t size,
792 struct syscall_arg *arg)
793 {
794 int printed = 0, flags = arg->val;
795
796 if (!(flags & O_CREAT))
797 arg->mask |= 1 << (arg->idx + 1); /* Mask the mode parm */
798
799 if (flags == 0)
800 return scnprintf(bf, size, "RDONLY");
801 #define P_FLAG(n) \
802 if (flags & O_##n) { \
803 printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \
804 flags &= ~O_##n; \
805 }
806
807 P_FLAG(APPEND);
808 P_FLAG(ASYNC);
809 P_FLAG(CLOEXEC);
810 P_FLAG(CREAT);
811 P_FLAG(DIRECT);
812 P_FLAG(DIRECTORY);
813 P_FLAG(EXCL);
814 P_FLAG(LARGEFILE);
815 P_FLAG(NOATIME);
816 P_FLAG(NOCTTY);
817 #ifdef O_NONBLOCK
818 P_FLAG(NONBLOCK);
819 #elif O_NDELAY
820 P_FLAG(NDELAY);
821 #endif
822 #ifdef O_PATH
823 P_FLAG(PATH);
824 #endif
825 P_FLAG(RDWR);
826 #ifdef O_DSYNC
827 if ((flags & O_SYNC) == O_SYNC)
828 printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", "SYNC");
829 else {
830 P_FLAG(DSYNC);
831 }
832 #else
833 P_FLAG(SYNC);
834 #endif
835 P_FLAG(TRUNC);
836 P_FLAG(WRONLY);
837 #undef P_FLAG
838
839 if (flags)
840 printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags);
841
842 return printed;
843 }
844
845 #define SCA_OPEN_FLAGS syscall_arg__scnprintf_open_flags
846
847 static size_t syscall_arg__scnprintf_perf_flags(char *bf, size_t size,
848 struct syscall_arg *arg)
849 {
850 int printed = 0, flags = arg->val;
851
852 if (flags == 0)
853 return 0;
854
855 #define P_FLAG(n) \
856 if (flags & PERF_FLAG_##n) { \
857 printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \
858 flags &= ~PERF_FLAG_##n; \
859 }
860
861 P_FLAG(FD_NO_GROUP);
862 P_FLAG(FD_OUTPUT);
863 P_FLAG(PID_CGROUP);
864 P_FLAG(FD_CLOEXEC);
865 #undef P_FLAG
866
867 if (flags)
868 printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags);
869
870 return printed;
871 }
872
873 #define SCA_PERF_FLAGS syscall_arg__scnprintf_perf_flags
874
875 static size_t syscall_arg__scnprintf_eventfd_flags(char *bf, size_t size,
876 struct syscall_arg *arg)
877 {
878 int printed = 0, flags = arg->val;
879
880 if (flags == 0)
881 return scnprintf(bf, size, "NONE");
882 #define P_FLAG(n) \
883 if (flags & EFD_##n) { \
884 printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \
885 flags &= ~EFD_##n; \
886 }
887
888 P_FLAG(SEMAPHORE);
889 P_FLAG(CLOEXEC);
890 P_FLAG(NONBLOCK);
891 #undef P_FLAG
892
893 if (flags)
894 printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags);
895
896 return printed;
897 }
898
899 #define SCA_EFD_FLAGS syscall_arg__scnprintf_eventfd_flags
900
901 static size_t syscall_arg__scnprintf_pipe_flags(char *bf, size_t size,
902 struct syscall_arg *arg)
903 {
904 int printed = 0, flags = arg->val;
905
906 #define P_FLAG(n) \
907 if (flags & O_##n) { \
908 printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \
909 flags &= ~O_##n; \
910 }
911
912 P_FLAG(CLOEXEC);
913 P_FLAG(NONBLOCK);
914 #undef P_FLAG
915
916 if (flags)
917 printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags);
918
919 return printed;
920 }
921
922 #define SCA_PIPE_FLAGS syscall_arg__scnprintf_pipe_flags
923
924 static size_t syscall_arg__scnprintf_signum(char *bf, size_t size, struct syscall_arg *arg)
925 {
926 int sig = arg->val;
927
928 switch (sig) {
929 #define P_SIGNUM(n) case SIG##n: return scnprintf(bf, size, #n)
930 P_SIGNUM(HUP);
931 P_SIGNUM(INT);
932 P_SIGNUM(QUIT);
933 P_SIGNUM(ILL);
934 P_SIGNUM(TRAP);
935 P_SIGNUM(ABRT);
936 P_SIGNUM(BUS);
937 P_SIGNUM(FPE);
938 P_SIGNUM(KILL);
939 P_SIGNUM(USR1);
940 P_SIGNUM(SEGV);
941 P_SIGNUM(USR2);
942 P_SIGNUM(PIPE);
943 P_SIGNUM(ALRM);
944 P_SIGNUM(TERM);
945 P_SIGNUM(CHLD);
946 P_SIGNUM(CONT);
947 P_SIGNUM(STOP);
948 P_SIGNUM(TSTP);
949 P_SIGNUM(TTIN);
950 P_SIGNUM(TTOU);
951 P_SIGNUM(URG);
952 P_SIGNUM(XCPU);
953 P_SIGNUM(XFSZ);
954 P_SIGNUM(VTALRM);
955 P_SIGNUM(PROF);
956 P_SIGNUM(WINCH);
957 P_SIGNUM(IO);
958 P_SIGNUM(PWR);
959 P_SIGNUM(SYS);
960 #ifdef SIGEMT
961 P_SIGNUM(EMT);
962 #endif
963 #ifdef SIGSTKFLT
964 P_SIGNUM(STKFLT);
965 #endif
966 #ifdef SIGSWI
967 P_SIGNUM(SWI);
968 #endif
969 default: break;
970 }
971
972 return scnprintf(bf, size, "%#x", sig);
973 }
974
975 #define SCA_SIGNUM syscall_arg__scnprintf_signum
976
977 #if defined(__i386__) || defined(__x86_64__)
978 /*
979 * FIXME: Make this available to all arches.
980 */
981 #define TCGETS 0x5401
982
983 static const char *tioctls[] = {
984 "TCGETS", "TCSETS", "TCSETSW", "TCSETSF", "TCGETA", "TCSETA", "TCSETAW",
985 "TCSETAF", "TCSBRK", "TCXONC", "TCFLSH", "TIOCEXCL", "TIOCNXCL",
986 "TIOCSCTTY", "TIOCGPGRP", "TIOCSPGRP", "TIOCOUTQ", "TIOCSTI",
987 "TIOCGWINSZ", "TIOCSWINSZ", "TIOCMGET", "TIOCMBIS", "TIOCMBIC",
988 "TIOCMSET", "TIOCGSOFTCAR", "TIOCSSOFTCAR", "FIONREAD", "TIOCLINUX",
989 "TIOCCONS", "TIOCGSERIAL", "TIOCSSERIAL", "TIOCPKT", "FIONBIO",
990 "TIOCNOTTY", "TIOCSETD", "TIOCGETD", "TCSBRKP", [0x27] = "TIOCSBRK",
991 "TIOCCBRK", "TIOCGSID", "TCGETS2", "TCSETS2", "TCSETSW2", "TCSETSF2",
992 "TIOCGRS485", "TIOCSRS485", "TIOCGPTN", "TIOCSPTLCK",
993 "TIOCGDEV||TCGETX", "TCSETX", "TCSETXF", "TCSETXW", "TIOCSIG",
994 "TIOCVHANGUP", "TIOCGPKT", "TIOCGPTLCK", "TIOCGEXCL",
995 [0x50] = "FIONCLEX", "FIOCLEX", "FIOASYNC", "TIOCSERCONFIG",
996 "TIOCSERGWILD", "TIOCSERSWILD", "TIOCGLCKTRMIOS", "TIOCSLCKTRMIOS",
997 "TIOCSERGSTRUCT", "TIOCSERGETLSR", "TIOCSERGETMULTI", "TIOCSERSETMULTI",
998 "TIOCMIWAIT", "TIOCGICOUNT", [0x60] = "FIOQSIZE",
999 };
1000
1001 static DEFINE_STRARRAY_OFFSET(tioctls, 0x5401);
1002 #endif /* defined(__i386__) || defined(__x86_64__) */
1003
1004 #define STRARRAY(arg, name, array) \
1005 .arg_scnprintf = { [arg] = SCA_STRARRAY, }, \
1006 .arg_parm = { [arg] = &strarray__##array, }
1007
1008 static struct syscall_fmt {
1009 const char *name;
1010 const char *alias;
1011 size_t (*arg_scnprintf[6])(char *bf, size_t size, struct syscall_arg *arg);
1012 void *arg_parm[6];
1013 bool errmsg;
1014 bool timeout;
1015 bool hexret;
1016 } syscall_fmts[] = {
1017 { .name = "access", .errmsg = true,
1018 .arg_scnprintf = { [0] = SCA_FILENAME, /* filename */
1019 [1] = SCA_ACCMODE, /* mode */ }, },
1020 { .name = "arch_prctl", .errmsg = true, .alias = "prctl", },
1021 { .name = "bpf", .errmsg = true, STRARRAY(0, cmd, bpf_cmd), },
1022 { .name = "brk", .hexret = true,
1023 .arg_scnprintf = { [0] = SCA_HEX, /* brk */ }, },
1024 { .name = "chdir", .errmsg = true,
1025 .arg_scnprintf = { [0] = SCA_FILENAME, /* filename */ }, },
1026 { .name = "chmod", .errmsg = true,
1027 .arg_scnprintf = { [0] = SCA_FILENAME, /* filename */ }, },
1028 { .name = "chroot", .errmsg = true,
1029 .arg_scnprintf = { [0] = SCA_FILENAME, /* filename */ }, },
1030 { .name = "clock_gettime", .errmsg = true, STRARRAY(0, clk_id, clockid), },
1031 { .name = "close", .errmsg = true,
1032 .arg_scnprintf = { [0] = SCA_CLOSE_FD, /* fd */ }, },
1033 { .name = "connect", .errmsg = true, },
1034 { .name = "creat", .errmsg = true,
1035 .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, },
1036 { .name = "dup", .errmsg = true,
1037 .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, },
1038 { .name = "dup2", .errmsg = true,
1039 .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, },
1040 { .name = "dup3", .errmsg = true,
1041 .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, },
1042 { .name = "epoll_ctl", .errmsg = true, STRARRAY(1, op, epoll_ctl_ops), },
1043 { .name = "eventfd2", .errmsg = true,
1044 .arg_scnprintf = { [1] = SCA_EFD_FLAGS, /* flags */ }, },
1045 { .name = "faccessat", .errmsg = true,
1046 .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */
1047 [1] = SCA_FILENAME, /* filename */ }, },
1048 { .name = "fadvise64", .errmsg = true,
1049 .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, },
1050 { .name = "fallocate", .errmsg = true,
1051 .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, },
1052 { .name = "fchdir", .errmsg = true,
1053 .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, },
1054 { .name = "fchmod", .errmsg = true,
1055 .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, },
1056 { .name = "fchmodat", .errmsg = true,
1057 .arg_scnprintf = { [0] = SCA_FDAT, /* fd */
1058 [1] = SCA_FILENAME, /* filename */ }, },
1059 { .name = "fchown", .errmsg = true,
1060 .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, },
1061 { .name = "fchownat", .errmsg = true,
1062 .arg_scnprintf = { [0] = SCA_FDAT, /* fd */
1063 [1] = SCA_FILENAME, /* filename */ }, },
1064 { .name = "fcntl", .errmsg = true,
1065 .arg_scnprintf = { [0] = SCA_FD, /* fd */
1066 [1] = SCA_STRARRAY, /* cmd */ },
1067 .arg_parm = { [1] = &strarray__fcntl_cmds, /* cmd */ }, },
1068 { .name = "fdatasync", .errmsg = true,
1069 .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, },
1070 { .name = "flock", .errmsg = true,
1071 .arg_scnprintf = { [0] = SCA_FD, /* fd */
1072 [1] = SCA_FLOCK, /* cmd */ }, },
1073 { .name = "fsetxattr", .errmsg = true,
1074 .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, },
1075 { .name = "fstat", .errmsg = true, .alias = "newfstat",
1076 .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, },
1077 { .name = "fstatat", .errmsg = true, .alias = "newfstatat",
1078 .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */
1079 [1] = SCA_FILENAME, /* filename */ }, },
1080 { .name = "fstatfs", .errmsg = true,
1081 .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, },
1082 { .name = "fsync", .errmsg = true,
1083 .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, },
1084 { .name = "ftruncate", .errmsg = true,
1085 .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, },
1086 { .name = "futex", .errmsg = true,
1087 .arg_scnprintf = { [1] = SCA_FUTEX_OP, /* op */ }, },
1088 { .name = "futimesat", .errmsg = true,
1089 .arg_scnprintf = { [0] = SCA_FDAT, /* fd */
1090 [1] = SCA_FILENAME, /* filename */ }, },
1091 { .name = "getdents", .errmsg = true,
1092 .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, },
1093 { .name = "getdents64", .errmsg = true,
1094 .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, },
1095 { .name = "getitimer", .errmsg = true, STRARRAY(0, which, itimers), },
1096 { .name = "getrlimit", .errmsg = true, STRARRAY(0, resource, rlimit_resources), },
1097 { .name = "getxattr", .errmsg = true,
1098 .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, },
1099 { .name = "inotify_add_watch", .errmsg = true,
1100 .arg_scnprintf = { [1] = SCA_FILENAME, /* pathname */ }, },
1101 { .name = "ioctl", .errmsg = true,
1102 .arg_scnprintf = { [0] = SCA_FD, /* fd */
1103 #if defined(__i386__) || defined(__x86_64__)
1104 /*
1105 * FIXME: Make this available to all arches.
1106 */
1107 [1] = SCA_STRHEXARRAY, /* cmd */
1108 [2] = SCA_HEX, /* arg */ },
1109 .arg_parm = { [1] = &strarray__tioctls, /* cmd */ }, },
1110 #else
1111 [2] = SCA_HEX, /* arg */ }, },
1112 #endif
1113 { .name = "keyctl", .errmsg = true, STRARRAY(0, option, keyctl_options), },
1114 { .name = "kill", .errmsg = true,
1115 .arg_scnprintf = { [1] = SCA_SIGNUM, /* sig */ }, },
1116 { .name = "lchown", .errmsg = true,
1117 .arg_scnprintf = { [0] = SCA_FILENAME, /* filename */ }, },
1118 { .name = "lgetxattr", .errmsg = true,
1119 .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, },
1120 { .name = "linkat", .errmsg = true,
1121 .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ }, },
1122 { .name = "listxattr", .errmsg = true,
1123 .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, },
1124 { .name = "llistxattr", .errmsg = true,
1125 .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, },
1126 { .name = "lremovexattr", .errmsg = true,
1127 .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, },
1128 { .name = "lseek", .errmsg = true,
1129 .arg_scnprintf = { [0] = SCA_FD, /* fd */
1130 [2] = SCA_STRARRAY, /* whence */ },
1131 .arg_parm = { [2] = &strarray__whences, /* whence */ }, },
1132 { .name = "lsetxattr", .errmsg = true,
1133 .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, },
1134 { .name = "lstat", .errmsg = true, .alias = "newlstat",
1135 .arg_scnprintf = { [0] = SCA_FILENAME, /* filename */ }, },
1136 { .name = "lsxattr", .errmsg = true,
1137 .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, },
1138 { .name = "madvise", .errmsg = true,
1139 .arg_scnprintf = { [0] = SCA_HEX, /* start */
1140 [2] = SCA_MADV_BHV, /* behavior */ }, },
1141 { .name = "mkdir", .errmsg = true,
1142 .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, },
1143 { .name = "mkdirat", .errmsg = true,
1144 .arg_scnprintf = { [0] = SCA_FDAT, /* fd */
1145 [1] = SCA_FILENAME, /* pathname */ }, },
1146 { .name = "mknod", .errmsg = true,
1147 .arg_scnprintf = { [0] = SCA_FILENAME, /* filename */ }, },
1148 { .name = "mknodat", .errmsg = true,
1149 .arg_scnprintf = { [0] = SCA_FDAT, /* fd */
1150 [1] = SCA_FILENAME, /* filename */ }, },
1151 { .name = "mlock", .errmsg = true,
1152 .arg_scnprintf = { [0] = SCA_HEX, /* addr */ }, },
1153 { .name = "mlockall", .errmsg = true,
1154 .arg_scnprintf = { [0] = SCA_HEX, /* addr */ }, },
1155 { .name = "mmap", .hexret = true,
1156 .arg_scnprintf = { [0] = SCA_HEX, /* addr */
1157 [2] = SCA_MMAP_PROT, /* prot */
1158 [3] = SCA_MMAP_FLAGS, /* flags */
1159 [4] = SCA_FD, /* fd */ }, },
1160 { .name = "mprotect", .errmsg = true,
1161 .arg_scnprintf = { [0] = SCA_HEX, /* start */
1162 [2] = SCA_MMAP_PROT, /* prot */ }, },
1163 { .name = "mq_unlink", .errmsg = true,
1164 .arg_scnprintf = { [0] = SCA_FILENAME, /* u_name */ }, },
1165 { .name = "mremap", .hexret = true,
1166 .arg_scnprintf = { [0] = SCA_HEX, /* addr */
1167 [3] = SCA_MREMAP_FLAGS, /* flags */
1168 [4] = SCA_HEX, /* new_addr */ }, },
1169 { .name = "munlock", .errmsg = true,
1170 .arg_scnprintf = { [0] = SCA_HEX, /* addr */ }, },
1171 { .name = "munmap", .errmsg = true,
1172 .arg_scnprintf = { [0] = SCA_HEX, /* addr */ }, },
1173 { .name = "name_to_handle_at", .errmsg = true,
1174 .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ }, },
1175 { .name = "newfstatat", .errmsg = true,
1176 .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */
1177 [1] = SCA_FILENAME, /* filename */ }, },
1178 { .name = "open", .errmsg = true,
1179 .arg_scnprintf = { [0] = SCA_FILENAME, /* filename */
1180 [1] = SCA_OPEN_FLAGS, /* flags */ }, },
1181 { .name = "open_by_handle_at", .errmsg = true,
1182 .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */
1183 [2] = SCA_OPEN_FLAGS, /* flags */ }, },
1184 { .name = "openat", .errmsg = true,
1185 .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */
1186 [1] = SCA_FILENAME, /* filename */
1187 [2] = SCA_OPEN_FLAGS, /* flags */ }, },
1188 { .name = "perf_event_open", .errmsg = true,
1189 .arg_scnprintf = { [1] = SCA_INT, /* pid */
1190 [2] = SCA_INT, /* cpu */
1191 [3] = SCA_FD, /* group_fd */
1192 [4] = SCA_PERF_FLAGS, /* flags */ }, },
1193 { .name = "pipe2", .errmsg = true,
1194 .arg_scnprintf = { [1] = SCA_PIPE_FLAGS, /* flags */ }, },
1195 { .name = "poll", .errmsg = true, .timeout = true, },
1196 { .name = "ppoll", .errmsg = true, .timeout = true, },
1197 { .name = "pread", .errmsg = true, .alias = "pread64",
1198 .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, },
1199 { .name = "preadv", .errmsg = true, .alias = "pread",
1200 .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, },
1201 { .name = "prlimit64", .errmsg = true, STRARRAY(1, resource, rlimit_resources), },
1202 { .name = "pwrite", .errmsg = true, .alias = "pwrite64",
1203 .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, },
1204 { .name = "pwritev", .errmsg = true,
1205 .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, },
1206 { .name = "read", .errmsg = true,
1207 .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, },
1208 { .name = "readlink", .errmsg = true,
1209 .arg_scnprintf = { [0] = SCA_FILENAME, /* path */ }, },
1210 { .name = "readlinkat", .errmsg = true,
1211 .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */
1212 [1] = SCA_FILENAME, /* pathname */ }, },
1213 { .name = "readv", .errmsg = true,
1214 .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, },
1215 { .name = "recvfrom", .errmsg = true,
1216 .arg_scnprintf = { [0] = SCA_FD, /* fd */
1217 [3] = SCA_MSG_FLAGS, /* flags */ }, },
1218 { .name = "recvmmsg", .errmsg = true,
1219 .arg_scnprintf = { [0] = SCA_FD, /* fd */
1220 [3] = SCA_MSG_FLAGS, /* flags */ }, },
1221 { .name = "recvmsg", .errmsg = true,
1222 .arg_scnprintf = { [0] = SCA_FD, /* fd */
1223 [2] = SCA_MSG_FLAGS, /* flags */ }, },
1224 { .name = "removexattr", .errmsg = true,
1225 .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, },
1226 { .name = "renameat", .errmsg = true,
1227 .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ }, },
1228 { .name = "rmdir", .errmsg = true,
1229 .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, },
1230 { .name = "rt_sigaction", .errmsg = true,
1231 .arg_scnprintf = { [0] = SCA_SIGNUM, /* sig */ }, },
1232 { .name = "rt_sigprocmask", .errmsg = true, STRARRAY(0, how, sighow), },
1233 { .name = "rt_sigqueueinfo", .errmsg = true,
1234 .arg_scnprintf = { [1] = SCA_SIGNUM, /* sig */ }, },
1235 { .name = "rt_tgsigqueueinfo", .errmsg = true,
1236 .arg_scnprintf = { [2] = SCA_SIGNUM, /* sig */ }, },
1237 { .name = "select", .errmsg = true, .timeout = true, },
1238 { .name = "sendmmsg", .errmsg = true,
1239 .arg_scnprintf = { [0] = SCA_FD, /* fd */
1240 [3] = SCA_MSG_FLAGS, /* flags */ }, },
1241 { .name = "sendmsg", .errmsg = true,
1242 .arg_scnprintf = { [0] = SCA_FD, /* fd */
1243 [2] = SCA_MSG_FLAGS, /* flags */ }, },
1244 { .name = "sendto", .errmsg = true,
1245 .arg_scnprintf = { [0] = SCA_FD, /* fd */
1246 [3] = SCA_MSG_FLAGS, /* flags */ }, },
1247 { .name = "setitimer", .errmsg = true, STRARRAY(0, which, itimers), },
1248 { .name = "setrlimit", .errmsg = true, STRARRAY(0, resource, rlimit_resources), },
1249 { .name = "setxattr", .errmsg = true,
1250 .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, },
1251 { .name = "shutdown", .errmsg = true,
1252 .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, },
1253 { .name = "socket", .errmsg = true,
1254 .arg_scnprintf = { [0] = SCA_STRARRAY, /* family */
1255 [1] = SCA_SK_TYPE, /* type */ },
1256 .arg_parm = { [0] = &strarray__socket_families, /* family */ }, },
1257 { .name = "socketpair", .errmsg = true,
1258 .arg_scnprintf = { [0] = SCA_STRARRAY, /* family */
1259 [1] = SCA_SK_TYPE, /* type */ },
1260 .arg_parm = { [0] = &strarray__socket_families, /* family */ }, },
1261 { .name = "stat", .errmsg = true, .alias = "newstat",
1262 .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, },
1263 { .name = "statfs", .errmsg = true,
1264 .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, },
1265 { .name = "swapoff", .errmsg = true,
1266 .arg_scnprintf = { [0] = SCA_FILENAME, /* specialfile */ }, },
1267 { .name = "swapon", .errmsg = true,
1268 .arg_scnprintf = { [0] = SCA_FILENAME, /* specialfile */ }, },
1269 { .name = "symlinkat", .errmsg = true,
1270 .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ }, },
1271 { .name = "tgkill", .errmsg = true,
1272 .arg_scnprintf = { [2] = SCA_SIGNUM, /* sig */ }, },
1273 { .name = "tkill", .errmsg = true,
1274 .arg_scnprintf = { [1] = SCA_SIGNUM, /* sig */ }, },
1275 { .name = "truncate", .errmsg = true,
1276 .arg_scnprintf = { [0] = SCA_FILENAME, /* path */ }, },
1277 { .name = "uname", .errmsg = true, .alias = "newuname", },
1278 { .name = "unlinkat", .errmsg = true,
1279 .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */
1280 [1] = SCA_FILENAME, /* pathname */ }, },
1281 { .name = "utime", .errmsg = true,
1282 .arg_scnprintf = { [0] = SCA_FILENAME, /* filename */ }, },
1283 { .name = "utimensat", .errmsg = true,
1284 .arg_scnprintf = { [0] = SCA_FDAT, /* dirfd */
1285 [1] = SCA_FILENAME, /* filename */ }, },
1286 { .name = "utimes", .errmsg = true,
1287 .arg_scnprintf = { [0] = SCA_FILENAME, /* filename */ }, },
1288 { .name = "vmsplice", .errmsg = true,
1289 .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, },
1290 { .name = "write", .errmsg = true,
1291 .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, },
1292 { .name = "writev", .errmsg = true,
1293 .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, },
1294 };
1295
1296 static int syscall_fmt__cmp(const void *name, const void *fmtp)
1297 {
1298 const struct syscall_fmt *fmt = fmtp;
1299 return strcmp(name, fmt->name);
1300 }
1301
1302 static struct syscall_fmt *syscall_fmt__find(const char *name)
1303 {
1304 const int nmemb = ARRAY_SIZE(syscall_fmts);
1305 return bsearch(name, syscall_fmts, nmemb, sizeof(struct syscall_fmt), syscall_fmt__cmp);
1306 }
1307
1308 struct syscall {
1309 struct event_format *tp_format;
1310 int nr_args;
1311 struct format_field *args;
1312 const char *name;
1313 bool is_exit;
1314 struct syscall_fmt *fmt;
1315 size_t (**arg_scnprintf)(char *bf, size_t size, struct syscall_arg *arg);
1316 void **arg_parm;
1317 };
1318
1319 static size_t fprintf_duration(unsigned long t, FILE *fp)
1320 {
1321 double duration = (double)t / NSEC_PER_MSEC;
1322 size_t printed = fprintf(fp, "(");
1323
1324 if (duration >= 1.0)
1325 printed += color_fprintf(fp, PERF_COLOR_RED, "%6.3f ms", duration);
1326 else if (duration >= 0.01)
1327 printed += color_fprintf(fp, PERF_COLOR_YELLOW, "%6.3f ms", duration);
1328 else
1329 printed += color_fprintf(fp, PERF_COLOR_NORMAL, "%6.3f ms", duration);
1330 return printed + fprintf(fp, "): ");
1331 }
1332
1333 /**
1334 * filename.ptr: The filename char pointer that will be vfs_getname'd
1335 * filename.entry_str_pos: Where to insert the string translated from
1336 * filename.ptr by the vfs_getname tracepoint/kprobe.
1337 */
1338 struct thread_trace {
1339 u64 entry_time;
1340 u64 exit_time;
1341 bool entry_pending;
1342 unsigned long nr_events;
1343 unsigned long pfmaj, pfmin;
1344 char *entry_str;
1345 double runtime_ms;
1346 struct {
1347 unsigned long ptr;
1348 short int entry_str_pos;
1349 bool pending_open;
1350 unsigned int namelen;
1351 char *name;
1352 } filename;
1353 struct {
1354 int max;
1355 char **table;
1356 } paths;
1357
1358 struct intlist *syscall_stats;
1359 };
1360
1361 static struct thread_trace *thread_trace__new(void)
1362 {
1363 struct thread_trace *ttrace = zalloc(sizeof(struct thread_trace));
1364
1365 if (ttrace)
1366 ttrace->paths.max = -1;
1367
1368 ttrace->syscall_stats = intlist__new(NULL);
1369
1370 return ttrace;
1371 }
1372
1373 static struct thread_trace *thread__trace(struct thread *thread, FILE *fp)
1374 {
1375 struct thread_trace *ttrace;
1376
1377 if (thread == NULL)
1378 goto fail;
1379
1380 if (thread__priv(thread) == NULL)
1381 thread__set_priv(thread, thread_trace__new());
1382
1383 if (thread__priv(thread) == NULL)
1384 goto fail;
1385
1386 ttrace = thread__priv(thread);
1387 ++ttrace->nr_events;
1388
1389 return ttrace;
1390 fail:
1391 color_fprintf(fp, PERF_COLOR_RED,
1392 "WARNING: not enough memory, dropping samples!\n");
1393 return NULL;
1394 }
1395
1396 #define TRACE_PFMAJ (1 << 0)
1397 #define TRACE_PFMIN (1 << 1)
1398
1399 static const size_t trace__entry_str_size = 2048;
1400
1401 struct trace {
1402 struct perf_tool tool;
1403 struct {
1404 int machine;
1405 int open_id;
1406 } audit;
1407 struct {
1408 int max;
1409 struct syscall *table;
1410 struct {
1411 struct perf_evsel *sys_enter,
1412 *sys_exit;
1413 } events;
1414 } syscalls;
1415 struct record_opts opts;
1416 struct perf_evlist *evlist;
1417 struct machine *host;
1418 struct thread *current;
1419 u64 base_time;
1420 FILE *output;
1421 unsigned long nr_events;
1422 struct strlist *ev_qualifier;
1423 struct {
1424 size_t nr;
1425 int *entries;
1426 } ev_qualifier_ids;
1427 struct intlist *tid_list;
1428 struct intlist *pid_list;
1429 struct {
1430 size_t nr;
1431 pid_t *entries;
1432 } filter_pids;
1433 double duration_filter;
1434 double runtime_ms;
1435 struct {
1436 u64 vfs_getname,
1437 proc_getname;
1438 } stats;
1439 bool not_ev_qualifier;
1440 bool live;
1441 bool full_time;
1442 bool sched;
1443 bool multiple_threads;
1444 bool summary;
1445 bool summary_only;
1446 bool show_comm;
1447 bool show_tool_stats;
1448 bool trace_syscalls;
1449 bool force;
1450 bool vfs_getname;
1451 int trace_pgfaults;
1452 };
1453
1454 static int trace__set_fd_pathname(struct thread *thread, int fd, const char *pathname)
1455 {
1456 struct thread_trace *ttrace = thread__priv(thread);
1457
1458 if (fd > ttrace->paths.max) {
1459 char **npath = realloc(ttrace->paths.table, (fd + 1) * sizeof(char *));
1460
1461 if (npath == NULL)
1462 return -1;
1463
1464 if (ttrace->paths.max != -1) {
1465 memset(npath + ttrace->paths.max + 1, 0,
1466 (fd - ttrace->paths.max) * sizeof(char *));
1467 } else {
1468 memset(npath, 0, (fd + 1) * sizeof(char *));
1469 }
1470
1471 ttrace->paths.table = npath;
1472 ttrace->paths.max = fd;
1473 }
1474
1475 ttrace->paths.table[fd] = strdup(pathname);
1476
1477 return ttrace->paths.table[fd] != NULL ? 0 : -1;
1478 }
1479
1480 static int thread__read_fd_path(struct thread *thread, int fd)
1481 {
1482 char linkname[PATH_MAX], pathname[PATH_MAX];
1483 struct stat st;
1484 int ret;
1485
1486 if (thread->pid_ == thread->tid) {
1487 scnprintf(linkname, sizeof(linkname),
1488 "/proc/%d/fd/%d", thread->pid_, fd);
1489 } else {
1490 scnprintf(linkname, sizeof(linkname),
1491 "/proc/%d/task/%d/fd/%d", thread->pid_, thread->tid, fd);
1492 }
1493
1494 if (lstat(linkname, &st) < 0 || st.st_size + 1 > (off_t)sizeof(pathname))
1495 return -1;
1496
1497 ret = readlink(linkname, pathname, sizeof(pathname));
1498
1499 if (ret < 0 || ret > st.st_size)
1500 return -1;
1501
1502 pathname[ret] = '\0';
1503 return trace__set_fd_pathname(thread, fd, pathname);
1504 }
1505
1506 static const char *thread__fd_path(struct thread *thread, int fd,
1507 struct trace *trace)
1508 {
1509 struct thread_trace *ttrace = thread__priv(thread);
1510
1511 if (ttrace == NULL)
1512 return NULL;
1513
1514 if (fd < 0)
1515 return NULL;
1516
1517 if ((fd > ttrace->paths.max || ttrace->paths.table[fd] == NULL)) {
1518 if (!trace->live)
1519 return NULL;
1520 ++trace->stats.proc_getname;
1521 if (thread__read_fd_path(thread, fd))
1522 return NULL;
1523 }
1524
1525 return ttrace->paths.table[fd];
1526 }
1527
1528 static size_t syscall_arg__scnprintf_fd(char *bf, size_t size,
1529 struct syscall_arg *arg)
1530 {
1531 int fd = arg->val;
1532 size_t printed = scnprintf(bf, size, "%d", fd);
1533 const char *path = thread__fd_path(arg->thread, fd, arg->trace);
1534
1535 if (path)
1536 printed += scnprintf(bf + printed, size - printed, "<%s>", path);
1537
1538 return printed;
1539 }
1540
1541 static size_t syscall_arg__scnprintf_close_fd(char *bf, size_t size,
1542 struct syscall_arg *arg)
1543 {
1544 int fd = arg->val;
1545 size_t printed = syscall_arg__scnprintf_fd(bf, size, arg);
1546 struct thread_trace *ttrace = thread__priv(arg->thread);
1547
1548 if (ttrace && fd >= 0 && fd <= ttrace->paths.max)
1549 zfree(&ttrace->paths.table[fd]);
1550
1551 return printed;
1552 }
1553
1554 static void thread__set_filename_pos(struct thread *thread, const char *bf,
1555 unsigned long ptr)
1556 {
1557 struct thread_trace *ttrace = thread__priv(thread);
1558
1559 ttrace->filename.ptr = ptr;
1560 ttrace->filename.entry_str_pos = bf - ttrace->entry_str;
1561 }
1562
1563 static size_t syscall_arg__scnprintf_filename(char *bf, size_t size,
1564 struct syscall_arg *arg)
1565 {
1566 unsigned long ptr = arg->val;
1567
1568 if (!arg->trace->vfs_getname)
1569 return scnprintf(bf, size, "%#x", ptr);
1570
1571 thread__set_filename_pos(arg->thread, bf, ptr);
1572 return 0;
1573 }
1574
1575 static bool trace__filter_duration(struct trace *trace, double t)
1576 {
1577 return t < (trace->duration_filter * NSEC_PER_MSEC);
1578 }
1579
1580 static size_t trace__fprintf_tstamp(struct trace *trace, u64 tstamp, FILE *fp)
1581 {
1582 double ts = (double)(tstamp - trace->base_time) / NSEC_PER_MSEC;
1583
1584 return fprintf(fp, "%10.3f ", ts);
1585 }
1586
1587 static bool done = false;
1588 static bool interrupted = false;
1589
1590 static void sig_handler(int sig)
1591 {
1592 done = true;
1593 interrupted = sig == SIGINT;
1594 }
1595
1596 static size_t trace__fprintf_entry_head(struct trace *trace, struct thread *thread,
1597 u64 duration, u64 tstamp, FILE *fp)
1598 {
1599 size_t printed = trace__fprintf_tstamp(trace, tstamp, fp);
1600 printed += fprintf_duration(duration, fp);
1601
1602 if (trace->multiple_threads) {
1603 if (trace->show_comm)
1604 printed += fprintf(fp, "%.14s/", thread__comm_str(thread));
1605 printed += fprintf(fp, "%d ", thread->tid);
1606 }
1607
1608 return printed;
1609 }
1610
1611 static int trace__process_event(struct trace *trace, struct machine *machine,
1612 union perf_event *event, struct perf_sample *sample)
1613 {
1614 int ret = 0;
1615
1616 switch (event->header.type) {
1617 case PERF_RECORD_LOST:
1618 color_fprintf(trace->output, PERF_COLOR_RED,
1619 "LOST %" PRIu64 " events!\n", event->lost.lost);
1620 ret = machine__process_lost_event(machine, event, sample);
1621 default:
1622 ret = machine__process_event(machine, event, sample);
1623 break;
1624 }
1625
1626 return ret;
1627 }
1628
1629 static int trace__tool_process(struct perf_tool *tool,
1630 union perf_event *event,
1631 struct perf_sample *sample,
1632 struct machine *machine)
1633 {
1634 struct trace *trace = container_of(tool, struct trace, tool);
1635 return trace__process_event(trace, machine, event, sample);
1636 }
1637
1638 static int trace__symbols_init(struct trace *trace, struct perf_evlist *evlist)
1639 {
1640 int err = symbol__init(NULL);
1641
1642 if (err)
1643 return err;
1644
1645 trace->host = machine__new_host();
1646 if (trace->host == NULL)
1647 return -ENOMEM;
1648
1649 if (trace_event__register_resolver(trace->host, machine__resolve_kernel_addr) < 0)
1650 return -errno;
1651
1652 err = __machine__synthesize_threads(trace->host, &trace->tool, &trace->opts.target,
1653 evlist->threads, trace__tool_process, false,
1654 trace->opts.proc_map_timeout);
1655 if (err)
1656 symbol__exit();
1657
1658 return err;
1659 }
1660
1661 static int syscall__set_arg_fmts(struct syscall *sc)
1662 {
1663 struct format_field *field;
1664 int idx = 0;
1665
1666 sc->arg_scnprintf = calloc(sc->nr_args, sizeof(void *));
1667 if (sc->arg_scnprintf == NULL)
1668 return -1;
1669
1670 if (sc->fmt)
1671 sc->arg_parm = sc->fmt->arg_parm;
1672
1673 for (field = sc->args; field; field = field->next) {
1674 if (sc->fmt && sc->fmt->arg_scnprintf[idx])
1675 sc->arg_scnprintf[idx] = sc->fmt->arg_scnprintf[idx];
1676 else if (field->flags & FIELD_IS_POINTER)
1677 sc->arg_scnprintf[idx] = syscall_arg__scnprintf_hex;
1678 ++idx;
1679 }
1680
1681 return 0;
1682 }
1683
1684 static int trace__read_syscall_info(struct trace *trace, int id)
1685 {
1686 char tp_name[128];
1687 struct syscall *sc;
1688 const char *name = audit_syscall_to_name(id, trace->audit.machine);
1689
1690 if (name == NULL)
1691 return -1;
1692
1693 if (id > trace->syscalls.max) {
1694 struct syscall *nsyscalls = realloc(trace->syscalls.table, (id + 1) * sizeof(*sc));
1695
1696 if (nsyscalls == NULL)
1697 return -1;
1698
1699 if (trace->syscalls.max != -1) {
1700 memset(nsyscalls + trace->syscalls.max + 1, 0,
1701 (id - trace->syscalls.max) * sizeof(*sc));
1702 } else {
1703 memset(nsyscalls, 0, (id + 1) * sizeof(*sc));
1704 }
1705
1706 trace->syscalls.table = nsyscalls;
1707 trace->syscalls.max = id;
1708 }
1709
1710 sc = trace->syscalls.table + id;
1711 sc->name = name;
1712
1713 sc->fmt = syscall_fmt__find(sc->name);
1714
1715 snprintf(tp_name, sizeof(tp_name), "sys_enter_%s", sc->name);
1716 sc->tp_format = trace_event__tp_format("syscalls", tp_name);
1717
1718 if (IS_ERR(sc->tp_format) && sc->fmt && sc->fmt->alias) {
1719 snprintf(tp_name, sizeof(tp_name), "sys_enter_%s", sc->fmt->alias);
1720 sc->tp_format = trace_event__tp_format("syscalls", tp_name);
1721 }
1722
1723 if (IS_ERR(sc->tp_format))
1724 return -1;
1725
1726 sc->args = sc->tp_format->format.fields;
1727 sc->nr_args = sc->tp_format->format.nr_fields;
1728 /*
1729 * We need to check and discard the first variable '__syscall_nr'
1730 * or 'nr' that mean the syscall number. It is needless here.
1731 * So drop '__syscall_nr' or 'nr' field but does not exist on older kernels.
1732 */
1733 if (sc->args && (!strcmp(sc->args->name, "__syscall_nr") || !strcmp(sc->args->name, "nr"))) {
1734 sc->args = sc->args->next;
1735 --sc->nr_args;
1736 }
1737
1738 sc->is_exit = !strcmp(name, "exit_group") || !strcmp(name, "exit");
1739
1740 return syscall__set_arg_fmts(sc);
1741 }
1742
1743 static int trace__validate_ev_qualifier(struct trace *trace)
1744 {
1745 int err = 0, i;
1746 struct str_node *pos;
1747
1748 trace->ev_qualifier_ids.nr = strlist__nr_entries(trace->ev_qualifier);
1749 trace->ev_qualifier_ids.entries = malloc(trace->ev_qualifier_ids.nr *
1750 sizeof(trace->ev_qualifier_ids.entries[0]));
1751
1752 if (trace->ev_qualifier_ids.entries == NULL) {
1753 fputs("Error:\tNot enough memory for allocating events qualifier ids\n",
1754 trace->output);
1755 err = -EINVAL;
1756 goto out;
1757 }
1758
1759 i = 0;
1760
1761 strlist__for_each(pos, trace->ev_qualifier) {
1762 const char *sc = pos->s;
1763 int id = audit_name_to_syscall(sc, trace->audit.machine);
1764
1765 if (id < 0) {
1766 if (err == 0) {
1767 fputs("Error:\tInvalid syscall ", trace->output);
1768 err = -EINVAL;
1769 } else {
1770 fputs(", ", trace->output);
1771 }
1772
1773 fputs(sc, trace->output);
1774 }
1775
1776 trace->ev_qualifier_ids.entries[i++] = id;
1777 }
1778
1779 if (err < 0) {
1780 fputs("\nHint:\ttry 'perf list syscalls:sys_enter_*'"
1781 "\nHint:\tand: 'man syscalls'\n", trace->output);
1782 zfree(&trace->ev_qualifier_ids.entries);
1783 trace->ev_qualifier_ids.nr = 0;
1784 }
1785 out:
1786 return err;
1787 }
1788
1789 /*
1790 * args is to be interpreted as a series of longs but we need to handle
1791 * 8-byte unaligned accesses. args points to raw_data within the event
1792 * and raw_data is guaranteed to be 8-byte unaligned because it is
1793 * preceded by raw_size which is a u32. So we need to copy args to a temp
1794 * variable to read it. Most notably this avoids extended load instructions
1795 * on unaligned addresses
1796 */
1797
1798 static size_t syscall__scnprintf_args(struct syscall *sc, char *bf, size_t size,
1799 unsigned char *args, struct trace *trace,
1800 struct thread *thread)
1801 {
1802 size_t printed = 0;
1803 unsigned char *p;
1804 unsigned long val;
1805
1806 if (sc->args != NULL) {
1807 struct format_field *field;
1808 u8 bit = 1;
1809 struct syscall_arg arg = {
1810 .idx = 0,
1811 .mask = 0,
1812 .trace = trace,
1813 .thread = thread,
1814 };
1815
1816 for (field = sc->args; field;
1817 field = field->next, ++arg.idx, bit <<= 1) {
1818 if (arg.mask & bit)
1819 continue;
1820
1821 /* special care for unaligned accesses */
1822 p = args + sizeof(unsigned long) * arg.idx;
1823 memcpy(&val, p, sizeof(val));
1824
1825 /*
1826 * Suppress this argument if its value is zero and
1827 * and we don't have a string associated in an
1828 * strarray for it.
1829 */
1830 if (val == 0 &&
1831 !(sc->arg_scnprintf &&
1832 sc->arg_scnprintf[arg.idx] == SCA_STRARRAY &&
1833 sc->arg_parm[arg.idx]))
1834 continue;
1835
1836 printed += scnprintf(bf + printed, size - printed,
1837 "%s%s: ", printed ? ", " : "", field->name);
1838 if (sc->arg_scnprintf && sc->arg_scnprintf[arg.idx]) {
1839 arg.val = val;
1840 if (sc->arg_parm)
1841 arg.parm = sc->arg_parm[arg.idx];
1842 printed += sc->arg_scnprintf[arg.idx](bf + printed,
1843 size - printed, &arg);
1844 } else {
1845 printed += scnprintf(bf + printed, size - printed,
1846 "%ld", val);
1847 }
1848 }
1849 } else {
1850 int i = 0;
1851
1852 while (i < 6) {
1853 /* special care for unaligned accesses */
1854 p = args + sizeof(unsigned long) * i;
1855 memcpy(&val, p, sizeof(val));
1856 printed += scnprintf(bf + printed, size - printed,
1857 "%sarg%d: %ld",
1858 printed ? ", " : "", i, val);
1859 ++i;
1860 }
1861 }
1862
1863 return printed;
1864 }
1865
1866 typedef int (*tracepoint_handler)(struct trace *trace, struct perf_evsel *evsel,
1867 union perf_event *event,
1868 struct perf_sample *sample);
1869
1870 static struct syscall *trace__syscall_info(struct trace *trace,
1871 struct perf_evsel *evsel, int id)
1872 {
1873
1874 if (id < 0) {
1875
1876 /*
1877 * XXX: Noticed on x86_64, reproduced as far back as 3.0.36, haven't tried
1878 * before that, leaving at a higher verbosity level till that is
1879 * explained. Reproduced with plain ftrace with:
1880 *
1881 * echo 1 > /t/events/raw_syscalls/sys_exit/enable
1882 * grep "NR -1 " /t/trace_pipe
1883 *
1884 * After generating some load on the machine.
1885 */
1886 if (verbose > 1) {
1887 static u64 n;
1888 fprintf(trace->output, "Invalid syscall %d id, skipping (%s, %" PRIu64 ") ...\n",
1889 id, perf_evsel__name(evsel), ++n);
1890 }
1891 return NULL;
1892 }
1893
1894 if ((id > trace->syscalls.max || trace->syscalls.table[id].name == NULL) &&
1895 trace__read_syscall_info(trace, id))
1896 goto out_cant_read;
1897
1898 if ((id > trace->syscalls.max || trace->syscalls.table[id].name == NULL))
1899 goto out_cant_read;
1900
1901 return &trace->syscalls.table[id];
1902
1903 out_cant_read:
1904 if (verbose) {
1905 fprintf(trace->output, "Problems reading syscall %d", id);
1906 if (id <= trace->syscalls.max && trace->syscalls.table[id].name != NULL)
1907 fprintf(trace->output, "(%s)", trace->syscalls.table[id].name);
1908 fputs(" information\n", trace->output);
1909 }
1910 return NULL;
1911 }
1912
1913 static void thread__update_stats(struct thread_trace *ttrace,
1914 int id, struct perf_sample *sample)
1915 {
1916 struct int_node *inode;
1917 struct stats *stats;
1918 u64 duration = 0;
1919
1920 inode = intlist__findnew(ttrace->syscall_stats, id);
1921 if (inode == NULL)
1922 return;
1923
1924 stats = inode->priv;
1925 if (stats == NULL) {
1926 stats = malloc(sizeof(struct stats));
1927 if (stats == NULL)
1928 return;
1929 init_stats(stats);
1930 inode->priv = stats;
1931 }
1932
1933 if (ttrace->entry_time && sample->time > ttrace->entry_time)
1934 duration = sample->time - ttrace->entry_time;
1935
1936 update_stats(stats, duration);
1937 }
1938
1939 static int trace__printf_interrupted_entry(struct trace *trace, struct perf_sample *sample)
1940 {
1941 struct thread_trace *ttrace;
1942 u64 duration;
1943 size_t printed;
1944
1945 if (trace->current == NULL)
1946 return 0;
1947
1948 ttrace = thread__priv(trace->current);
1949
1950 if (!ttrace->entry_pending)
1951 return 0;
1952
1953 duration = sample->time - ttrace->entry_time;
1954
1955 printed = trace__fprintf_entry_head(trace, trace->current, duration, sample->time, trace->output);
1956 printed += fprintf(trace->output, "%-70s) ...\n", ttrace->entry_str);
1957 ttrace->entry_pending = false;
1958
1959 return printed;
1960 }
1961
1962 static int trace__sys_enter(struct trace *trace, struct perf_evsel *evsel,
1963 union perf_event *event __maybe_unused,
1964 struct perf_sample *sample)
1965 {
1966 char *msg;
1967 void *args;
1968 size_t printed = 0;
1969 struct thread *thread;
1970 int id = perf_evsel__sc_tp_uint(evsel, id, sample), err = -1;
1971 struct syscall *sc = trace__syscall_info(trace, evsel, id);
1972 struct thread_trace *ttrace;
1973
1974 if (sc == NULL)
1975 return -1;
1976
1977 thread = machine__findnew_thread(trace->host, sample->pid, sample->tid);
1978 ttrace = thread__trace(thread, trace->output);
1979 if (ttrace == NULL)
1980 goto out_put;
1981
1982 args = perf_evsel__sc_tp_ptr(evsel, args, sample);
1983
1984 if (ttrace->entry_str == NULL) {
1985 ttrace->entry_str = malloc(trace__entry_str_size);
1986 if (!ttrace->entry_str)
1987 goto out_put;
1988 }
1989
1990 if (!trace->summary_only)
1991 trace__printf_interrupted_entry(trace, sample);
1992
1993 ttrace->entry_time = sample->time;
1994 msg = ttrace->entry_str;
1995 printed += scnprintf(msg + printed, trace__entry_str_size - printed, "%s(", sc->name);
1996
1997 printed += syscall__scnprintf_args(sc, msg + printed, trace__entry_str_size - printed,
1998 args, trace, thread);
1999
2000 if (sc->is_exit) {
2001 if (!trace->duration_filter && !trace->summary_only) {
2002 trace__fprintf_entry_head(trace, thread, 1, sample->time, trace->output);
2003 fprintf(trace->output, "%-70s\n", ttrace->entry_str);
2004 }
2005 } else {
2006 ttrace->entry_pending = true;
2007 /* See trace__vfs_getname & trace__sys_exit */
2008 ttrace->filename.pending_open = false;
2009 }
2010
2011 if (trace->current != thread) {
2012 thread__put(trace->current);
2013 trace->current = thread__get(thread);
2014 }
2015 err = 0;
2016 out_put:
2017 thread__put(thread);
2018 return err;
2019 }
2020
2021 static int trace__sys_exit(struct trace *trace, struct perf_evsel *evsel,
2022 union perf_event *event __maybe_unused,
2023 struct perf_sample *sample)
2024 {
2025 long ret;
2026 u64 duration = 0;
2027 struct thread *thread;
2028 int id = perf_evsel__sc_tp_uint(evsel, id, sample), err = -1;
2029 struct syscall *sc = trace__syscall_info(trace, evsel, id);
2030 struct thread_trace *ttrace;
2031
2032 if (sc == NULL)
2033 return -1;
2034
2035 thread = machine__findnew_thread(trace->host, sample->pid, sample->tid);
2036 ttrace = thread__trace(thread, trace->output);
2037 if (ttrace == NULL)
2038 goto out_put;
2039
2040 if (trace->summary)
2041 thread__update_stats(ttrace, id, sample);
2042
2043 ret = perf_evsel__sc_tp_uint(evsel, ret, sample);
2044
2045 if (id == trace->audit.open_id && ret >= 0 && ttrace->filename.pending_open) {
2046 trace__set_fd_pathname(thread, ret, ttrace->filename.name);
2047 ttrace->filename.pending_open = false;
2048 ++trace->stats.vfs_getname;
2049 }
2050
2051 ttrace->exit_time = sample->time;
2052
2053 if (ttrace->entry_time) {
2054 duration = sample->time - ttrace->entry_time;
2055 if (trace__filter_duration(trace, duration))
2056 goto out;
2057 } else if (trace->duration_filter)
2058 goto out;
2059
2060 if (trace->summary_only)
2061 goto out;
2062
2063 trace__fprintf_entry_head(trace, thread, duration, sample->time, trace->output);
2064
2065 if (ttrace->entry_pending) {
2066 fprintf(trace->output, "%-70s", ttrace->entry_str);
2067 } else {
2068 fprintf(trace->output, " ... [");
2069 color_fprintf(trace->output, PERF_COLOR_YELLOW, "continued");
2070 fprintf(trace->output, "]: %s()", sc->name);
2071 }
2072
2073 if (sc->fmt == NULL) {
2074 signed_print:
2075 fprintf(trace->output, ") = %ld", ret);
2076 } else if (ret < 0 && sc->fmt->errmsg) {
2077 char bf[STRERR_BUFSIZE];
2078 const char *emsg = strerror_r(-ret, bf, sizeof(bf)),
2079 *e = audit_errno_to_name(-ret);
2080
2081 fprintf(trace->output, ") = -1 %s %s", e, emsg);
2082 } else if (ret == 0 && sc->fmt->timeout)
2083 fprintf(trace->output, ") = 0 Timeout");
2084 else if (sc->fmt->hexret)
2085 fprintf(trace->output, ") = %#lx", ret);
2086 else
2087 goto signed_print;
2088
2089 fputc('\n', trace->output);
2090 out:
2091 ttrace->entry_pending = false;
2092 err = 0;
2093 out_put:
2094 thread__put(thread);
2095 return err;
2096 }
2097
2098 static int trace__vfs_getname(struct trace *trace, struct perf_evsel *evsel,
2099 union perf_event *event __maybe_unused,
2100 struct perf_sample *sample)
2101 {
2102 struct thread *thread = machine__findnew_thread(trace->host, sample->pid, sample->tid);
2103 struct thread_trace *ttrace;
2104 size_t filename_len, entry_str_len, to_move;
2105 ssize_t remaining_space;
2106 char *pos;
2107 const char *filename = perf_evsel__rawptr(evsel, sample, "pathname");
2108
2109 if (!thread)
2110 goto out;
2111
2112 ttrace = thread__priv(thread);
2113 if (!ttrace)
2114 goto out;
2115
2116 filename_len = strlen(filename);
2117
2118 if (ttrace->filename.namelen < filename_len) {
2119 char *f = realloc(ttrace->filename.name, filename_len + 1);
2120
2121 if (f == NULL)
2122 goto out;
2123
2124 ttrace->filename.namelen = filename_len;
2125 ttrace->filename.name = f;
2126 }
2127
2128 strcpy(ttrace->filename.name, filename);
2129 ttrace->filename.pending_open = true;
2130
2131 if (!ttrace->filename.ptr)
2132 goto out;
2133
2134 entry_str_len = strlen(ttrace->entry_str);
2135 remaining_space = trace__entry_str_size - entry_str_len - 1; /* \0 */
2136 if (remaining_space <= 0)
2137 goto out;
2138
2139 if (filename_len > (size_t)remaining_space) {
2140 filename += filename_len - remaining_space;
2141 filename_len = remaining_space;
2142 }
2143
2144 to_move = entry_str_len - ttrace->filename.entry_str_pos + 1; /* \0 */
2145 pos = ttrace->entry_str + ttrace->filename.entry_str_pos;
2146 memmove(pos + filename_len, pos, to_move);
2147 memcpy(pos, filename, filename_len);
2148
2149 ttrace->filename.ptr = 0;
2150 ttrace->filename.entry_str_pos = 0;
2151 out:
2152 return 0;
2153 }
2154
2155 static int trace__sched_stat_runtime(struct trace *trace, struct perf_evsel *evsel,
2156 union perf_event *event __maybe_unused,
2157 struct perf_sample *sample)
2158 {
2159 u64 runtime = perf_evsel__intval(evsel, sample, "runtime");
2160 double runtime_ms = (double)runtime / NSEC_PER_MSEC;
2161 struct thread *thread = machine__findnew_thread(trace->host,
2162 sample->pid,
2163 sample->tid);
2164 struct thread_trace *ttrace = thread__trace(thread, trace->output);
2165
2166 if (ttrace == NULL)
2167 goto out_dump;
2168
2169 ttrace->runtime_ms += runtime_ms;
2170 trace->runtime_ms += runtime_ms;
2171 thread__put(thread);
2172 return 0;
2173
2174 out_dump:
2175 fprintf(trace->output, "%s: comm=%s,pid=%u,runtime=%" PRIu64 ",vruntime=%" PRIu64 ")\n",
2176 evsel->name,
2177 perf_evsel__strval(evsel, sample, "comm"),
2178 (pid_t)perf_evsel__intval(evsel, sample, "pid"),
2179 runtime,
2180 perf_evsel__intval(evsel, sample, "vruntime"));
2181 thread__put(thread);
2182 return 0;
2183 }
2184
2185 static void bpf_output__printer(enum binary_printer_ops op,
2186 unsigned int val, void *extra)
2187 {
2188 FILE *output = extra;
2189 unsigned char ch = (unsigned char)val;
2190
2191 switch (op) {
2192 case BINARY_PRINT_CHAR_DATA:
2193 fprintf(output, "%c", isprint(ch) ? ch : '.');
2194 break;
2195 case BINARY_PRINT_DATA_BEGIN:
2196 case BINARY_PRINT_LINE_BEGIN:
2197 case BINARY_PRINT_ADDR:
2198 case BINARY_PRINT_NUM_DATA:
2199 case BINARY_PRINT_NUM_PAD:
2200 case BINARY_PRINT_SEP:
2201 case BINARY_PRINT_CHAR_PAD:
2202 case BINARY_PRINT_LINE_END:
2203 case BINARY_PRINT_DATA_END:
2204 default:
2205 break;
2206 }
2207 }
2208
2209 static void bpf_output__fprintf(struct trace *trace,
2210 struct perf_sample *sample)
2211 {
2212 print_binary(sample->raw_data, sample->raw_size, 8,
2213 bpf_output__printer, trace->output);
2214 }
2215
2216 static int trace__event_handler(struct trace *trace, struct perf_evsel *evsel,
2217 union perf_event *event __maybe_unused,
2218 struct perf_sample *sample)
2219 {
2220 trace__printf_interrupted_entry(trace, sample);
2221 trace__fprintf_tstamp(trace, sample->time, trace->output);
2222
2223 if (trace->trace_syscalls)
2224 fprintf(trace->output, "( ): ");
2225
2226 fprintf(trace->output, "%s:", evsel->name);
2227
2228 if (perf_evsel__is_bpf_output(evsel)) {
2229 bpf_output__fprintf(trace, sample);
2230 } else if (evsel->tp_format) {
2231 event_format__fprintf(evsel->tp_format, sample->cpu,
2232 sample->raw_data, sample->raw_size,
2233 trace->output);
2234 }
2235
2236 fprintf(trace->output, ")\n");
2237 return 0;
2238 }
2239
2240 static void print_location(FILE *f, struct perf_sample *sample,
2241 struct addr_location *al,
2242 bool print_dso, bool print_sym)
2243 {
2244
2245 if ((verbose || print_dso) && al->map)
2246 fprintf(f, "%s@", al->map->dso->long_name);
2247
2248 if ((verbose || print_sym) && al->sym)
2249 fprintf(f, "%s+0x%" PRIx64, al->sym->name,
2250 al->addr - al->sym->start);
2251 else if (al->map)
2252 fprintf(f, "0x%" PRIx64, al->addr);
2253 else
2254 fprintf(f, "0x%" PRIx64, sample->addr);
2255 }
2256
2257 static int trace__pgfault(struct trace *trace,
2258 struct perf_evsel *evsel,
2259 union perf_event *event __maybe_unused,
2260 struct perf_sample *sample)
2261 {
2262 struct thread *thread;
2263 struct addr_location al;
2264 char map_type = 'd';
2265 struct thread_trace *ttrace;
2266 int err = -1;
2267
2268 thread = machine__findnew_thread(trace->host, sample->pid, sample->tid);
2269 ttrace = thread__trace(thread, trace->output);
2270 if (ttrace == NULL)
2271 goto out_put;
2272
2273 if (evsel->attr.config == PERF_COUNT_SW_PAGE_FAULTS_MAJ)
2274 ttrace->pfmaj++;
2275 else
2276 ttrace->pfmin++;
2277
2278 if (trace->summary_only)
2279 goto out;
2280
2281 thread__find_addr_location(thread, sample->cpumode, MAP__FUNCTION,
2282 sample->ip, &al);
2283
2284 trace__fprintf_entry_head(trace, thread, 0, sample->time, trace->output);
2285
2286 fprintf(trace->output, "%sfault [",
2287 evsel->attr.config == PERF_COUNT_SW_PAGE_FAULTS_MAJ ?
2288 "maj" : "min");
2289
2290 print_location(trace->output, sample, &al, false, true);
2291
2292 fprintf(trace->output, "] => ");
2293
2294 thread__find_addr_location(thread, sample->cpumode, MAP__VARIABLE,
2295 sample->addr, &al);
2296
2297 if (!al.map) {
2298 thread__find_addr_location(thread, sample->cpumode,
2299 MAP__FUNCTION, sample->addr, &al);
2300
2301 if (al.map)
2302 map_type = 'x';
2303 else
2304 map_type = '?';
2305 }
2306
2307 print_location(trace->output, sample, &al, true, false);
2308
2309 fprintf(trace->output, " (%c%c)\n", map_type, al.level);
2310 out:
2311 err = 0;
2312 out_put:
2313 thread__put(thread);
2314 return err;
2315 }
2316
2317 static bool skip_sample(struct trace *trace, struct perf_sample *sample)
2318 {
2319 if ((trace->pid_list && intlist__find(trace->pid_list, sample->pid)) ||
2320 (trace->tid_list && intlist__find(trace->tid_list, sample->tid)))
2321 return false;
2322
2323 if (trace->pid_list || trace->tid_list)
2324 return true;
2325
2326 return false;
2327 }
2328
2329 static int trace__process_sample(struct perf_tool *tool,
2330 union perf_event *event,
2331 struct perf_sample *sample,
2332 struct perf_evsel *evsel,
2333 struct machine *machine __maybe_unused)
2334 {
2335 struct trace *trace = container_of(tool, struct trace, tool);
2336 int err = 0;
2337
2338 tracepoint_handler handler = evsel->handler;
2339
2340 if (skip_sample(trace, sample))
2341 return 0;
2342
2343 if (!trace->full_time && trace->base_time == 0)
2344 trace->base_time = sample->time;
2345
2346 if (handler) {
2347 ++trace->nr_events;
2348 handler(trace, evsel, event, sample);
2349 }
2350
2351 return err;
2352 }
2353
2354 static int parse_target_str(struct trace *trace)
2355 {
2356 if (trace->opts.target.pid) {
2357 trace->pid_list = intlist__new(trace->opts.target.pid);
2358 if (trace->pid_list == NULL) {
2359 pr_err("Error parsing process id string\n");
2360 return -EINVAL;
2361 }
2362 }
2363
2364 if (trace->opts.target.tid) {
2365 trace->tid_list = intlist__new(trace->opts.target.tid);
2366 if (trace->tid_list == NULL) {
2367 pr_err("Error parsing thread id string\n");
2368 return -EINVAL;
2369 }
2370 }
2371
2372 return 0;
2373 }
2374
2375 static int trace__record(struct trace *trace, int argc, const char **argv)
2376 {
2377 unsigned int rec_argc, i, j;
2378 const char **rec_argv;
2379 const char * const record_args[] = {
2380 "record",
2381 "-R",
2382 "-m", "1024",
2383 "-c", "1",
2384 };
2385
2386 const char * const sc_args[] = { "-e", };
2387 unsigned int sc_args_nr = ARRAY_SIZE(sc_args);
2388 const char * const majpf_args[] = { "-e", "major-faults" };
2389 unsigned int majpf_args_nr = ARRAY_SIZE(majpf_args);
2390 const char * const minpf_args[] = { "-e", "minor-faults" };
2391 unsigned int minpf_args_nr = ARRAY_SIZE(minpf_args);
2392
2393 /* +1 is for the event string below */
2394 rec_argc = ARRAY_SIZE(record_args) + sc_args_nr + 1 +
2395 majpf_args_nr + minpf_args_nr + argc;
2396 rec_argv = calloc(rec_argc + 1, sizeof(char *));
2397
2398 if (rec_argv == NULL)
2399 return -ENOMEM;
2400
2401 j = 0;
2402 for (i = 0; i < ARRAY_SIZE(record_args); i++)
2403 rec_argv[j++] = record_args[i];
2404
2405 if (trace->trace_syscalls) {
2406 for (i = 0; i < sc_args_nr; i++)
2407 rec_argv[j++] = sc_args[i];
2408
2409 /* event string may be different for older kernels - e.g., RHEL6 */
2410 if (is_valid_tracepoint("raw_syscalls:sys_enter"))
2411 rec_argv[j++] = "raw_syscalls:sys_enter,raw_syscalls:sys_exit";
2412 else if (is_valid_tracepoint("syscalls:sys_enter"))
2413 rec_argv[j++] = "syscalls:sys_enter,syscalls:sys_exit";
2414 else {
2415 pr_err("Neither raw_syscalls nor syscalls events exist.\n");
2416 return -1;
2417 }
2418 }
2419
2420 if (trace->trace_pgfaults & TRACE_PFMAJ)
2421 for (i = 0; i < majpf_args_nr; i++)
2422 rec_argv[j++] = majpf_args[i];
2423
2424 if (trace->trace_pgfaults & TRACE_PFMIN)
2425 for (i = 0; i < minpf_args_nr; i++)
2426 rec_argv[j++] = minpf_args[i];
2427
2428 for (i = 0; i < (unsigned int)argc; i++)
2429 rec_argv[j++] = argv[i];
2430
2431 return cmd_record(j, rec_argv, NULL);
2432 }
2433
2434 static size_t trace__fprintf_thread_summary(struct trace *trace, FILE *fp);
2435
2436 static bool perf_evlist__add_vfs_getname(struct perf_evlist *evlist)
2437 {
2438 struct perf_evsel *evsel = perf_evsel__newtp("probe", "vfs_getname");
2439
2440 if (IS_ERR(evsel))
2441 return false;
2442
2443 if (perf_evsel__field(evsel, "pathname") == NULL) {
2444 perf_evsel__delete(evsel);
2445 return false;
2446 }
2447
2448 evsel->handler = trace__vfs_getname;
2449 perf_evlist__add(evlist, evsel);
2450 return true;
2451 }
2452
2453 static int perf_evlist__add_pgfault(struct perf_evlist *evlist,
2454 u64 config)
2455 {
2456 struct perf_evsel *evsel;
2457 struct perf_event_attr attr = {
2458 .type = PERF_TYPE_SOFTWARE,
2459 .mmap_data = 1,
2460 };
2461
2462 attr.config = config;
2463 attr.sample_period = 1;
2464
2465 event_attr_init(&attr);
2466
2467 evsel = perf_evsel__new(&attr);
2468 if (!evsel)
2469 return -ENOMEM;
2470
2471 evsel->handler = trace__pgfault;
2472 perf_evlist__add(evlist, evsel);
2473
2474 return 0;
2475 }
2476
2477 static void trace__handle_event(struct trace *trace, union perf_event *event, struct perf_sample *sample)
2478 {
2479 const u32 type = event->header.type;
2480 struct perf_evsel *evsel;
2481
2482 if (!trace->full_time && trace->base_time == 0)
2483 trace->base_time = sample->time;
2484
2485 if (type != PERF_RECORD_SAMPLE) {
2486 trace__process_event(trace, trace->host, event, sample);
2487 return;
2488 }
2489
2490 evsel = perf_evlist__id2evsel(trace->evlist, sample->id);
2491 if (evsel == NULL) {
2492 fprintf(trace->output, "Unknown tp ID %" PRIu64 ", skipping...\n", sample->id);
2493 return;
2494 }
2495
2496 if (evsel->attr.type == PERF_TYPE_TRACEPOINT &&
2497 sample->raw_data == NULL) {
2498 fprintf(trace->output, "%s sample with no payload for tid: %d, cpu %d, raw_size=%d, skipping...\n",
2499 perf_evsel__name(evsel), sample->tid,
2500 sample->cpu, sample->raw_size);
2501 } else {
2502 tracepoint_handler handler = evsel->handler;
2503 handler(trace, evsel, event, sample);
2504 }
2505 }
2506
2507 static int trace__add_syscall_newtp(struct trace *trace)
2508 {
2509 int ret = -1;
2510 struct perf_evlist *evlist = trace->evlist;
2511 struct perf_evsel *sys_enter, *sys_exit;
2512
2513 sys_enter = perf_evsel__syscall_newtp("sys_enter", trace__sys_enter);
2514 if (sys_enter == NULL)
2515 goto out;
2516
2517 if (perf_evsel__init_sc_tp_ptr_field(sys_enter, args))
2518 goto out_delete_sys_enter;
2519
2520 sys_exit = perf_evsel__syscall_newtp("sys_exit", trace__sys_exit);
2521 if (sys_exit == NULL)
2522 goto out_delete_sys_enter;
2523
2524 if (perf_evsel__init_sc_tp_uint_field(sys_exit, ret))
2525 goto out_delete_sys_exit;
2526
2527 perf_evlist__add(evlist, sys_enter);
2528 perf_evlist__add(evlist, sys_exit);
2529
2530 trace->syscalls.events.sys_enter = sys_enter;
2531 trace->syscalls.events.sys_exit = sys_exit;
2532
2533 ret = 0;
2534 out:
2535 return ret;
2536
2537 out_delete_sys_exit:
2538 perf_evsel__delete_priv(sys_exit);
2539 out_delete_sys_enter:
2540 perf_evsel__delete_priv(sys_enter);
2541 goto out;
2542 }
2543
2544 static int trace__set_ev_qualifier_filter(struct trace *trace)
2545 {
2546 int err = -1;
2547 char *filter = asprintf_expr_inout_ints("id", !trace->not_ev_qualifier,
2548 trace->ev_qualifier_ids.nr,
2549 trace->ev_qualifier_ids.entries);
2550
2551 if (filter == NULL)
2552 goto out_enomem;
2553
2554 if (!perf_evsel__append_filter(trace->syscalls.events.sys_enter, "&&", filter))
2555 err = perf_evsel__append_filter(trace->syscalls.events.sys_exit, "&&", filter);
2556
2557 free(filter);
2558 out:
2559 return err;
2560 out_enomem:
2561 errno = ENOMEM;
2562 goto out;
2563 }
2564
2565 static int trace__run(struct trace *trace, int argc, const char **argv)
2566 {
2567 struct perf_evlist *evlist = trace->evlist;
2568 struct perf_evsel *evsel;
2569 int err = -1, i;
2570 unsigned long before;
2571 const bool forks = argc > 0;
2572 bool draining = false;
2573
2574 trace->live = true;
2575
2576 if (trace->trace_syscalls && trace__add_syscall_newtp(trace))
2577 goto out_error_raw_syscalls;
2578
2579 if (trace->trace_syscalls)
2580 trace->vfs_getname = perf_evlist__add_vfs_getname(evlist);
2581
2582 if ((trace->trace_pgfaults & TRACE_PFMAJ) &&
2583 perf_evlist__add_pgfault(evlist, PERF_COUNT_SW_PAGE_FAULTS_MAJ)) {
2584 goto out_error_mem;
2585 }
2586
2587 if ((trace->trace_pgfaults & TRACE_PFMIN) &&
2588 perf_evlist__add_pgfault(evlist, PERF_COUNT_SW_PAGE_FAULTS_MIN))
2589 goto out_error_mem;
2590
2591 if (trace->sched &&
2592 perf_evlist__add_newtp(evlist, "sched", "sched_stat_runtime",
2593 trace__sched_stat_runtime))
2594 goto out_error_sched_stat_runtime;
2595
2596 err = perf_evlist__create_maps(evlist, &trace->opts.target);
2597 if (err < 0) {
2598 fprintf(trace->output, "Problems parsing the target to trace, check your options!\n");
2599 goto out_delete_evlist;
2600 }
2601
2602 err = trace__symbols_init(trace, evlist);
2603 if (err < 0) {
2604 fprintf(trace->output, "Problems initializing symbol libraries!\n");
2605 goto out_delete_evlist;
2606 }
2607
2608 perf_evlist__config(evlist, &trace->opts);
2609
2610 signal(SIGCHLD, sig_handler);
2611 signal(SIGINT, sig_handler);
2612
2613 if (forks) {
2614 err = perf_evlist__prepare_workload(evlist, &trace->opts.target,
2615 argv, false, NULL);
2616 if (err < 0) {
2617 fprintf(trace->output, "Couldn't run the workload!\n");
2618 goto out_delete_evlist;
2619 }
2620 }
2621
2622 err = perf_evlist__open(evlist);
2623 if (err < 0)
2624 goto out_error_open;
2625
2626 err = bpf__apply_obj_config();
2627 if (err) {
2628 char errbuf[BUFSIZ];
2629
2630 bpf__strerror_apply_obj_config(err, errbuf, sizeof(errbuf));
2631 pr_err("ERROR: Apply config to BPF failed: %s\n",
2632 errbuf);
2633 goto out_error_open;
2634 }
2635
2636 /*
2637 * Better not use !target__has_task() here because we need to cover the
2638 * case where no threads were specified in the command line, but a
2639 * workload was, and in that case we will fill in the thread_map when
2640 * we fork the workload in perf_evlist__prepare_workload.
2641 */
2642 if (trace->filter_pids.nr > 0)
2643 err = perf_evlist__set_filter_pids(evlist, trace->filter_pids.nr, trace->filter_pids.entries);
2644 else if (thread_map__pid(evlist->threads, 0) == -1)
2645 err = perf_evlist__set_filter_pid(evlist, getpid());
2646
2647 if (err < 0)
2648 goto out_error_mem;
2649
2650 if (trace->ev_qualifier_ids.nr > 0) {
2651 err = trace__set_ev_qualifier_filter(trace);
2652 if (err < 0)
2653 goto out_errno;
2654
2655 pr_debug("event qualifier tracepoint filter: %s\n",
2656 trace->syscalls.events.sys_exit->filter);
2657 }
2658
2659 err = perf_evlist__apply_filters(evlist, &evsel);
2660 if (err < 0)
2661 goto out_error_apply_filters;
2662
2663 err = perf_evlist__mmap(evlist, trace->opts.mmap_pages, false);
2664 if (err < 0)
2665 goto out_error_mmap;
2666
2667 if (!target__none(&trace->opts.target))
2668 perf_evlist__enable(evlist);
2669
2670 if (forks)
2671 perf_evlist__start_workload(evlist);
2672
2673 trace->multiple_threads = thread_map__pid(evlist->threads, 0) == -1 ||
2674 evlist->threads->nr > 1 ||
2675 perf_evlist__first(evlist)->attr.inherit;
2676 again:
2677 before = trace->nr_events;
2678
2679 for (i = 0; i < evlist->nr_mmaps; i++) {
2680 union perf_event *event;
2681
2682 while ((event = perf_evlist__mmap_read(evlist, i)) != NULL) {
2683 struct perf_sample sample;
2684
2685 ++trace->nr_events;
2686
2687 err = perf_evlist__parse_sample(evlist, event, &sample);
2688 if (err) {
2689 fprintf(trace->output, "Can't parse sample, err = %d, skipping...\n", err);
2690 goto next_event;
2691 }
2692
2693 trace__handle_event(trace, event, &sample);
2694 next_event:
2695 perf_evlist__mmap_consume(evlist, i);
2696
2697 if (interrupted)
2698 goto out_disable;
2699
2700 if (done && !draining) {
2701 perf_evlist__disable(evlist);
2702 draining = true;
2703 }
2704 }
2705 }
2706
2707 if (trace->nr_events == before) {
2708 int timeout = done ? 100 : -1;
2709
2710 if (!draining && perf_evlist__poll(evlist, timeout) > 0) {
2711 if (perf_evlist__filter_pollfd(evlist, POLLERR | POLLHUP) == 0)
2712 draining = true;
2713
2714 goto again;
2715 }
2716 } else {
2717 goto again;
2718 }
2719
2720 out_disable:
2721 thread__zput(trace->current);
2722
2723 perf_evlist__disable(evlist);
2724
2725 if (!err) {
2726 if (trace->summary)
2727 trace__fprintf_thread_summary(trace, trace->output);
2728
2729 if (trace->show_tool_stats) {
2730 fprintf(trace->output, "Stats:\n "
2731 " vfs_getname : %" PRIu64 "\n"
2732 " proc_getname: %" PRIu64 "\n",
2733 trace->stats.vfs_getname,
2734 trace->stats.proc_getname);
2735 }
2736 }
2737
2738 out_delete_evlist:
2739 perf_evlist__delete(evlist);
2740 trace->evlist = NULL;
2741 trace->live = false;
2742 return err;
2743 {
2744 char errbuf[BUFSIZ];
2745
2746 out_error_sched_stat_runtime:
2747 tracing_path__strerror_open_tp(errno, errbuf, sizeof(errbuf), "sched", "sched_stat_runtime");
2748 goto out_error;
2749
2750 out_error_raw_syscalls:
2751 tracing_path__strerror_open_tp(errno, errbuf, sizeof(errbuf), "raw_syscalls", "sys_(enter|exit)");
2752 goto out_error;
2753
2754 out_error_mmap:
2755 perf_evlist__strerror_mmap(evlist, errno, errbuf, sizeof(errbuf));
2756 goto out_error;
2757
2758 out_error_open:
2759 perf_evlist__strerror_open(evlist, errno, errbuf, sizeof(errbuf));
2760
2761 out_error:
2762 fprintf(trace->output, "%s\n", errbuf);
2763 goto out_delete_evlist;
2764
2765 out_error_apply_filters:
2766 fprintf(trace->output,
2767 "Failed to set filter \"%s\" on event %s with %d (%s)\n",
2768 evsel->filter, perf_evsel__name(evsel), errno,
2769 strerror_r(errno, errbuf, sizeof(errbuf)));
2770 goto out_delete_evlist;
2771 }
2772 out_error_mem:
2773 fprintf(trace->output, "Not enough memory to run!\n");
2774 goto out_delete_evlist;
2775
2776 out_errno:
2777 fprintf(trace->output, "errno=%d,%s\n", errno, strerror(errno));
2778 goto out_delete_evlist;
2779 }
2780
2781 static int trace__replay(struct trace *trace)
2782 {
2783 const struct perf_evsel_str_handler handlers[] = {
2784 { "probe:vfs_getname", trace__vfs_getname, },
2785 };
2786 struct perf_data_file file = {
2787 .path = input_name,
2788 .mode = PERF_DATA_MODE_READ,
2789 .force = trace->force,
2790 };
2791 struct perf_session *session;
2792 struct perf_evsel *evsel;
2793 int err = -1;
2794
2795 trace->tool.sample = trace__process_sample;
2796 trace->tool.mmap = perf_event__process_mmap;
2797 trace->tool.mmap2 = perf_event__process_mmap2;
2798 trace->tool.comm = perf_event__process_comm;
2799 trace->tool.exit = perf_event__process_exit;
2800 trace->tool.fork = perf_event__process_fork;
2801 trace->tool.attr = perf_event__process_attr;
2802 trace->tool.tracing_data = perf_event__process_tracing_data;
2803 trace->tool.build_id = perf_event__process_build_id;
2804
2805 trace->tool.ordered_events = true;
2806 trace->tool.ordering_requires_timestamps = true;
2807
2808 /* add tid to output */
2809 trace->multiple_threads = true;
2810
2811 session = perf_session__new(&file, false, &trace->tool);
2812 if (session == NULL)
2813 return -1;
2814
2815 if (symbol__init(&session->header.env) < 0)
2816 goto out;
2817
2818 trace->host = &session->machines.host;
2819
2820 err = perf_session__set_tracepoints_handlers(session, handlers);
2821 if (err)
2822 goto out;
2823
2824 evsel = perf_evlist__find_tracepoint_by_name(session->evlist,
2825 "raw_syscalls:sys_enter");
2826 /* older kernels have syscalls tp versus raw_syscalls */
2827 if (evsel == NULL)
2828 evsel = perf_evlist__find_tracepoint_by_name(session->evlist,
2829 "syscalls:sys_enter");
2830
2831 if (evsel &&
2832 (perf_evsel__init_syscall_tp(evsel, trace__sys_enter) < 0 ||
2833 perf_evsel__init_sc_tp_ptr_field(evsel, args))) {
2834 pr_err("Error during initialize raw_syscalls:sys_enter event\n");
2835 goto out;
2836 }
2837
2838 evsel = perf_evlist__find_tracepoint_by_name(session->evlist,
2839 "raw_syscalls:sys_exit");
2840 if (evsel == NULL)
2841 evsel = perf_evlist__find_tracepoint_by_name(session->evlist,
2842 "syscalls:sys_exit");
2843 if (evsel &&
2844 (perf_evsel__init_syscall_tp(evsel, trace__sys_exit) < 0 ||
2845 perf_evsel__init_sc_tp_uint_field(evsel, ret))) {
2846 pr_err("Error during initialize raw_syscalls:sys_exit event\n");
2847 goto out;
2848 }
2849
2850 evlist__for_each(session->evlist, evsel) {
2851 if (evsel->attr.type == PERF_TYPE_SOFTWARE &&
2852 (evsel->attr.config == PERF_COUNT_SW_PAGE_FAULTS_MAJ ||
2853 evsel->attr.config == PERF_COUNT_SW_PAGE_FAULTS_MIN ||
2854 evsel->attr.config == PERF_COUNT_SW_PAGE_FAULTS))
2855 evsel->handler = trace__pgfault;
2856 }
2857
2858 err = parse_target_str(trace);
2859 if (err != 0)
2860 goto out;
2861
2862 setup_pager();
2863
2864 err = perf_session__process_events(session);
2865 if (err)
2866 pr_err("Failed to process events, error %d", err);
2867
2868 else if (trace->summary)
2869 trace__fprintf_thread_summary(trace, trace->output);
2870
2871 out:
2872 perf_session__delete(session);
2873
2874 return err;
2875 }
2876
2877 static size_t trace__fprintf_threads_header(FILE *fp)
2878 {
2879 size_t printed;
2880
2881 printed = fprintf(fp, "\n Summary of events:\n\n");
2882
2883 return printed;
2884 }
2885
2886 static size_t thread__dump_stats(struct thread_trace *ttrace,
2887 struct trace *trace, FILE *fp)
2888 {
2889 struct stats *stats;
2890 size_t printed = 0;
2891 struct syscall *sc;
2892 struct int_node *inode = intlist__first(ttrace->syscall_stats);
2893
2894 if (inode == NULL)
2895 return 0;
2896
2897 printed += fprintf(fp, "\n");
2898
2899 printed += fprintf(fp, " syscall calls total min avg max stddev\n");
2900 printed += fprintf(fp, " (msec) (msec) (msec) (msec) (%%)\n");
2901 printed += fprintf(fp, " --------------- -------- --------- --------- --------- --------- ------\n");
2902
2903 /* each int_node is a syscall */
2904 while (inode) {
2905 stats = inode->priv;
2906 if (stats) {
2907 double min = (double)(stats->min) / NSEC_PER_MSEC;
2908 double max = (double)(stats->max) / NSEC_PER_MSEC;
2909 double avg = avg_stats(stats);
2910 double pct;
2911 u64 n = (u64) stats->n;
2912
2913 pct = avg ? 100.0 * stddev_stats(stats)/avg : 0.0;
2914 avg /= NSEC_PER_MSEC;
2915
2916 sc = &trace->syscalls.table[inode->i];
2917 printed += fprintf(fp, " %-15s", sc->name);
2918 printed += fprintf(fp, " %8" PRIu64 " %9.3f %9.3f %9.3f",
2919 n, avg * n, min, avg);
2920 printed += fprintf(fp, " %9.3f %9.2f%%\n", max, pct);
2921 }
2922
2923 inode = intlist__next(inode);
2924 }
2925
2926 printed += fprintf(fp, "\n\n");
2927
2928 return printed;
2929 }
2930
2931 /* struct used to pass data to per-thread function */
2932 struct summary_data {
2933 FILE *fp;
2934 struct trace *trace;
2935 size_t printed;
2936 };
2937
2938 static int trace__fprintf_one_thread(struct thread *thread, void *priv)
2939 {
2940 struct summary_data *data = priv;
2941 FILE *fp = data->fp;
2942 size_t printed = data->printed;
2943 struct trace *trace = data->trace;
2944 struct thread_trace *ttrace = thread__priv(thread);
2945 double ratio;
2946
2947 if (ttrace == NULL)
2948 return 0;
2949
2950 ratio = (double)ttrace->nr_events / trace->nr_events * 100.0;
2951
2952 printed += fprintf(fp, " %s (%d), ", thread__comm_str(thread), thread->tid);
2953 printed += fprintf(fp, "%lu events, ", ttrace->nr_events);
2954 printed += fprintf(fp, "%.1f%%", ratio);
2955 if (ttrace->pfmaj)
2956 printed += fprintf(fp, ", %lu majfaults", ttrace->pfmaj);
2957 if (ttrace->pfmin)
2958 printed += fprintf(fp, ", %lu minfaults", ttrace->pfmin);
2959 printed += fprintf(fp, ", %.3f msec\n", ttrace->runtime_ms);
2960 printed += thread__dump_stats(ttrace, trace, fp);
2961
2962 data->printed += printed;
2963
2964 return 0;
2965 }
2966
2967 static size_t trace__fprintf_thread_summary(struct trace *trace, FILE *fp)
2968 {
2969 struct summary_data data = {
2970 .fp = fp,
2971 .trace = trace
2972 };
2973 data.printed = trace__fprintf_threads_header(fp);
2974
2975 machine__for_each_thread(trace->host, trace__fprintf_one_thread, &data);
2976
2977 return data.printed;
2978 }
2979
2980 static int trace__set_duration(const struct option *opt, const char *str,
2981 int unset __maybe_unused)
2982 {
2983 struct trace *trace = opt->value;
2984
2985 trace->duration_filter = atof(str);
2986 return 0;
2987 }
2988
2989 static int trace__set_filter_pids(const struct option *opt, const char *str,
2990 int unset __maybe_unused)
2991 {
2992 int ret = -1;
2993 size_t i;
2994 struct trace *trace = opt->value;
2995 /*
2996 * FIXME: introduce a intarray class, plain parse csv and create a
2997 * { int nr, int entries[] } struct...
2998 */
2999 struct intlist *list = intlist__new(str);
3000
3001 if (list == NULL)
3002 return -1;
3003
3004 i = trace->filter_pids.nr = intlist__nr_entries(list) + 1;
3005 trace->filter_pids.entries = calloc(i, sizeof(pid_t));
3006
3007 if (trace->filter_pids.entries == NULL)
3008 goto out;
3009
3010 trace->filter_pids.entries[0] = getpid();
3011
3012 for (i = 1; i < trace->filter_pids.nr; ++i)
3013 trace->filter_pids.entries[i] = intlist__entry(list, i - 1)->i;
3014
3015 intlist__delete(list);
3016 ret = 0;
3017 out:
3018 return ret;
3019 }
3020
3021 static int trace__open_output(struct trace *trace, const char *filename)
3022 {
3023 struct stat st;
3024
3025 if (!stat(filename, &st) && st.st_size) {
3026 char oldname[PATH_MAX];
3027
3028 scnprintf(oldname, sizeof(oldname), "%s.old", filename);
3029 unlink(oldname);
3030 rename(filename, oldname);
3031 }
3032
3033 trace->output = fopen(filename, "w");
3034
3035 return trace->output == NULL ? -errno : 0;
3036 }
3037
3038 static int parse_pagefaults(const struct option *opt, const char *str,
3039 int unset __maybe_unused)
3040 {
3041 int *trace_pgfaults = opt->value;
3042
3043 if (strcmp(str, "all") == 0)
3044 *trace_pgfaults |= TRACE_PFMAJ | TRACE_PFMIN;
3045 else if (strcmp(str, "maj") == 0)
3046 *trace_pgfaults |= TRACE_PFMAJ;
3047 else if (strcmp(str, "min") == 0)
3048 *trace_pgfaults |= TRACE_PFMIN;
3049 else
3050 return -1;
3051
3052 return 0;
3053 }
3054
3055 static void evlist__set_evsel_handler(struct perf_evlist *evlist, void *handler)
3056 {
3057 struct perf_evsel *evsel;
3058
3059 evlist__for_each(evlist, evsel)
3060 evsel->handler = handler;
3061 }
3062
3063 int cmd_trace(int argc, const char **argv, const char *prefix __maybe_unused)
3064 {
3065 const char *trace_usage[] = {
3066 "perf trace [<options>] [<command>]",
3067 "perf trace [<options>] -- <command> [<options>]",
3068 "perf trace record [<options>] [<command>]",
3069 "perf trace record [<options>] -- <command> [<options>]",
3070 NULL
3071 };
3072 struct trace trace = {
3073 .audit = {
3074 .machine = audit_detect_machine(),
3075 .open_id = audit_name_to_syscall("open", trace.audit.machine),
3076 },
3077 .syscalls = {
3078 . max = -1,
3079 },
3080 .opts = {
3081 .target = {
3082 .uid = UINT_MAX,
3083 .uses_mmap = true,
3084 },
3085 .user_freq = UINT_MAX,
3086 .user_interval = ULLONG_MAX,
3087 .no_buffering = true,
3088 .mmap_pages = UINT_MAX,
3089 .proc_map_timeout = 500,
3090 },
3091 .output = stderr,
3092 .show_comm = true,
3093 .trace_syscalls = true,
3094 };
3095 const char *output_name = NULL;
3096 const char *ev_qualifier_str = NULL;
3097 const struct option trace_options[] = {
3098 OPT_CALLBACK(0, "event", &trace.evlist, "event",
3099 "event selector. use 'perf list' to list available events",
3100 parse_events_option),
3101 OPT_BOOLEAN(0, "comm", &trace.show_comm,
3102 "show the thread COMM next to its id"),
3103 OPT_BOOLEAN(0, "tool_stats", &trace.show_tool_stats, "show tool stats"),
3104 OPT_STRING('e', "expr", &ev_qualifier_str, "expr", "list of syscalls to trace"),
3105 OPT_STRING('o', "output", &output_name, "file", "output file name"),
3106 OPT_STRING('i', "input", &input_name, "file", "Analyze events in file"),
3107 OPT_STRING('p', "pid", &trace.opts.target.pid, "pid",
3108 "trace events on existing process id"),
3109 OPT_STRING('t', "tid", &trace.opts.target.tid, "tid",
3110 "trace events on existing thread id"),
3111 OPT_CALLBACK(0, "filter-pids", &trace, "CSV list of pids",
3112 "pids to filter (by the kernel)", trace__set_filter_pids),
3113 OPT_BOOLEAN('a', "all-cpus", &trace.opts.target.system_wide,
3114 "system-wide collection from all CPUs"),
3115 OPT_STRING('C', "cpu", &trace.opts.target.cpu_list, "cpu",
3116 "list of cpus to monitor"),
3117 OPT_BOOLEAN(0, "no-inherit", &trace.opts.no_inherit,
3118 "child tasks do not inherit counters"),
3119 OPT_CALLBACK('m', "mmap-pages", &trace.opts.mmap_pages, "pages",
3120 "number of mmap data pages",
3121 perf_evlist__parse_mmap_pages),
3122 OPT_STRING('u', "uid", &trace.opts.target.uid_str, "user",
3123 "user to profile"),
3124 OPT_CALLBACK(0, "duration", &trace, "float",
3125 "show only events with duration > N.M ms",
3126 trace__set_duration),
3127 OPT_BOOLEAN(0, "sched", &trace.sched, "show blocking scheduler events"),
3128 OPT_INCR('v', "verbose", &verbose, "be more verbose"),
3129 OPT_BOOLEAN('T', "time", &trace.full_time,
3130 "Show full timestamp, not time relative to first start"),
3131 OPT_BOOLEAN('s', "summary", &trace.summary_only,
3132 "Show only syscall summary with statistics"),
3133 OPT_BOOLEAN('S', "with-summary", &trace.summary,
3134 "Show all syscalls and summary with statistics"),
3135 OPT_CALLBACK_DEFAULT('F', "pf", &trace.trace_pgfaults, "all|maj|min",
3136 "Trace pagefaults", parse_pagefaults, "maj"),
3137 OPT_BOOLEAN(0, "syscalls", &trace.trace_syscalls, "Trace syscalls"),
3138 OPT_BOOLEAN('f', "force", &trace.force, "don't complain, do it"),
3139 OPT_UINTEGER(0, "proc-map-timeout", &trace.opts.proc_map_timeout,
3140 "per thread proc mmap processing timeout in ms"),
3141 OPT_END()
3142 };
3143 const char * const trace_subcommands[] = { "record", NULL };
3144 int err;
3145 char bf[BUFSIZ];
3146
3147 signal(SIGSEGV, sighandler_dump_stack);
3148 signal(SIGFPE, sighandler_dump_stack);
3149
3150 trace.evlist = perf_evlist__new();
3151
3152 if (trace.evlist == NULL) {
3153 pr_err("Not enough memory to run!\n");
3154 err = -ENOMEM;
3155 goto out;
3156 }
3157
3158 argc = parse_options_subcommand(argc, argv, trace_options, trace_subcommands,
3159 trace_usage, PARSE_OPT_STOP_AT_NON_OPTION);
3160
3161 if (trace.trace_pgfaults) {
3162 trace.opts.sample_address = true;
3163 trace.opts.sample_time = true;
3164 }
3165
3166 if (trace.evlist->nr_entries > 0)
3167 evlist__set_evsel_handler(trace.evlist, trace__event_handler);
3168
3169 if ((argc >= 1) && (strcmp(argv[0], "record") == 0))
3170 return trace__record(&trace, argc-1, &argv[1]);
3171
3172 /* summary_only implies summary option, but don't overwrite summary if set */
3173 if (trace.summary_only)
3174 trace.summary = trace.summary_only;
3175
3176 if (!trace.trace_syscalls && !trace.trace_pgfaults &&
3177 trace.evlist->nr_entries == 0 /* Was --events used? */) {
3178 pr_err("Please specify something to trace.\n");
3179 return -1;
3180 }
3181
3182 if (output_name != NULL) {
3183 err = trace__open_output(&trace, output_name);
3184 if (err < 0) {
3185 perror("failed to create output file");
3186 goto out;
3187 }
3188 }
3189
3190 if (ev_qualifier_str != NULL) {
3191 const char *s = ev_qualifier_str;
3192 struct strlist_config slist_config = {
3193 .dirname = system_path(STRACE_GROUPS_DIR),
3194 };
3195
3196 trace.not_ev_qualifier = *s == '!';
3197 if (trace.not_ev_qualifier)
3198 ++s;
3199 trace.ev_qualifier = strlist__new(s, &slist_config);
3200 if (trace.ev_qualifier == NULL) {
3201 fputs("Not enough memory to parse event qualifier",
3202 trace.output);
3203 err = -ENOMEM;
3204 goto out_close;
3205 }
3206
3207 err = trace__validate_ev_qualifier(&trace);
3208 if (err)
3209 goto out_close;
3210 }
3211
3212 err = target__validate(&trace.opts.target);
3213 if (err) {
3214 target__strerror(&trace.opts.target, err, bf, sizeof(bf));
3215 fprintf(trace.output, "%s", bf);
3216 goto out_close;
3217 }
3218
3219 err = target__parse_uid(&trace.opts.target);
3220 if (err) {
3221 target__strerror(&trace.opts.target, err, bf, sizeof(bf));
3222 fprintf(trace.output, "%s", bf);
3223 goto out_close;
3224 }
3225
3226 if (!argc && target__none(&trace.opts.target))
3227 trace.opts.target.system_wide = true;
3228
3229 if (input_name)
3230 err = trace__replay(&trace);
3231 else
3232 err = trace__run(&trace, argc, argv);
3233
3234 out_close:
3235 if (output_name != NULL)
3236 fclose(trace.output);
3237 out:
3238 return err;
3239 }
Linux kernel - Deliverables
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