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