]> git.proxmox.com Git - mirror_ubuntu-artful-kernel.git/blame - tools/perf/builtin-trace.c
projects / mirror_ubuntu-artful-kernel.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
perf tools: Remove unused 'prefix' from builtin functions
[mirror_ubuntu-artful-kernel.git] / tools / perf / builtin-trace.c
CommitLineData
a598bb5e
ACM		 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
4e319027 19#include <traceevent/event-parse.h>
988bdb31 20#include <api/fs/tracing_path.h>
514f1c67 21#include "builtin.h"
752fde44 22#include "util/color.h"
7c304ee0 23#include "util/debug.h"
514f1c67 24#include "util/evlist.h"
4b6ab94e 25#include <subcmd/exec-cmd.h>
752fde44 26#include "util/machine.h"
6810fc91 27#include "util/session.h"
752fde44 28#include "util/thread.h"
4b6ab94e 29#include <subcmd/parse-options.h>
2ae3a312 30#include "util/strlist.h"
bdc89661 31#include "util/intlist.h"
514f1c67 32#include "util/thread_map.h"
bf2575c1 33#include "util/stat.h"
97978b3e 34#include "trace-event.h"
9aca7f17 35#include "util/parse-events.h"
ba504235 36#include "util/bpf-loader.h"
566a0885 37#include "callchain.h"
fd0db102 38#include "syscalltbl.h"
96c14451 39#include "rb_resort.h"
514f1c67 40
fd0db102 41#include <libaudit.h> /* FIXME: Still needed for audit_errno_to_name */
514f1c67 42#include <stdlib.h>
017037ff 43#include <string.h>
8dd2a131 44#include <linux/err.h>
997bba8c
ACM		 45#include <linux/filter.h>
46#include <linux/audit.h>
39878d49 47#include <linux/random.h>
c6d4a494 48#include <linux/stringify.h>
bd48c63e 49#include <linux/time64.h>
514f1c67 50
c188e7ac
ACM		 51#ifndef O_CLOEXEC
52# define O_CLOEXEC 02000000
53#endif
54
d1d438a3
ACM		 55struct trace {
56 struct perf_tool tool;
fd0db102 57 struct syscalltbl *sctbl;
d1d438a3
ACM		 58 struct {
59 int max;
60 struct syscall *table;
61 struct {
62 struct perf_evsel *sys_enter,
63 *sys_exit;
64 } events;
65 } syscalls;
66 struct record_opts opts;
67 struct perf_evlist *evlist;
68 struct machine *host;
69 struct thread *current;
70 u64 base_time;
71 FILE *output;
72 unsigned long nr_events;
73 struct strlist *ev_qualifier;
74 struct {
75 size_t nr;
76 int *entries;
77 } ev_qualifier_ids;
d1d438a3
ACM		 78 struct {
79 size_t nr;
80 pid_t *entries;
81 } filter_pids;
82 double duration_filter;
83 double runtime_ms;
84 struct {
85 u64 vfs_getname,
86 proc_getname;
87 } stats;
c6d4a494 88 unsigned int max_stack;
5cf9c84e 89 unsigned int min_stack;
d1d438a3
ACM		 90 bool not_ev_qualifier;
91 bool live;
92 bool full_time;
93 bool sched;
94 bool multiple_threads;
95 bool summary;
96 bool summary_only;
97 bool show_comm;
98 bool show_tool_stats;
99 bool trace_syscalls;
44621819 100 bool kernel_syscallchains;
d1d438a3
ACM		 101 bool force;
102 bool vfs_getname;
103 int trace_pgfaults;
fd0db102 104 int open_id;
d1d438a3 105};
a1c2552d 106
77170988
ACM		 107struct tp_field {
108 int offset;
109 union {
110 u64 (*integer)(struct tp_field *field, struct perf_sample *sample);
111 void *(*pointer)(struct tp_field *field, struct perf_sample *sample);
112 };
113};
114
115#define TP_UINT_FIELD(bits) \
116static u64 tp_field__u##bits(struct tp_field *field, struct perf_sample *sample) \
117{ \
55d43bca
DA		 118 u##bits value; \
119 memcpy(&value, sample->raw_data + field->offset, sizeof(value)); \
120 return value; \
77170988
ACM		 121}
122
123TP_UINT_FIELD(8);
124TP_UINT_FIELD(16);
125TP_UINT_FIELD(32);
126TP_UINT_FIELD(64);
127
128#define TP_UINT_FIELD__SWAPPED(bits) \
129static u64 tp_field__swapped_u##bits(struct tp_field *field, struct perf_sample *sample) \
130{ \
55d43bca
DA		 131 u##bits value; \
132 memcpy(&value, sample->raw_data + field->offset, sizeof(value)); \
77170988
ACM		 133 return bswap_##bits(value);\
134}
135
136TP_UINT_FIELD__SWAPPED(16);
137TP_UINT_FIELD__SWAPPED(32);
138TP_UINT_FIELD__SWAPPED(64);
139
140static int tp_field__init_uint(struct tp_field *field,
141 struct format_field *format_field,
142 bool needs_swap)
143{
144 field->offset = format_field->offset;
145
146 switch (format_field->size) {
147 case 1:
148 field->integer = tp_field__u8;
149 break;
150 case 2:
151 field->integer = needs_swap ? tp_field__swapped_u16 : tp_field__u16;
152 break;
153 case 4:
154 field->integer = needs_swap ? tp_field__swapped_u32 : tp_field__u32;
155 break;
156 case 8:
157 field->integer = needs_swap ? tp_field__swapped_u64 : tp_field__u64;
158 break;
159 default:
160 return -1;
161 }
162
163 return 0;
164}
165
166static void *tp_field__ptr(struct tp_field *field, struct perf_sample *sample)
167{
168 return sample->raw_data + field->offset;
169}
170
171static int tp_field__init_ptr(struct tp_field *field, struct format_field *format_field)
172{
173 field->offset = format_field->offset;
174 field->pointer = tp_field__ptr;
175 return 0;
176}
177
178struct syscall_tp {
179 struct tp_field id;
180 union {
181 struct tp_field args, ret;
182 };
183};
184
185static int perf_evsel__init_tp_uint_field(struct perf_evsel *evsel,
186 struct tp_field *field,
187 const char *name)
188{
189 struct format_field *format_field = perf_evsel__field(evsel, name);
190
191 if (format_field == NULL)
192 return -1;
193
194 return tp_field__init_uint(field, format_field, evsel->needs_swap);
195}
196
197#define perf_evsel__init_sc_tp_uint_field(evsel, name) \
198 ({ struct syscall_tp *sc = evsel->priv;\
199 perf_evsel__init_tp_uint_field(evsel, &sc->name, #name); })
200
201static int perf_evsel__init_tp_ptr_field(struct perf_evsel *evsel,
202 struct tp_field *field,
203 const char *name)
204{
205 struct format_field *format_field = perf_evsel__field(evsel, name);
206
207 if (format_field == NULL)
208 return -1;
209
210 return tp_field__init_ptr(field, format_field);
211}
212
213#define perf_evsel__init_sc_tp_ptr_field(evsel, name) \
214 ({ struct syscall_tp *sc = evsel->priv;\
215 perf_evsel__init_tp_ptr_field(evsel, &sc->name, #name); })
216
217static void perf_evsel__delete_priv(struct perf_evsel *evsel)
218{
04662523 219 zfree(&evsel->priv);
77170988
ACM		 220 perf_evsel__delete(evsel);
221}
222
96695d44
NK		 223static int perf_evsel__init_syscall_tp(struct perf_evsel *evsel, void *handler)
224{
225 evsel->priv = malloc(sizeof(struct syscall_tp));
226 if (evsel->priv != NULL) {
227 if (perf_evsel__init_sc_tp_uint_field(evsel, id))
228 goto out_delete;
229
230 evsel->handler = handler;
231 return 0;
232 }
233
234 return -ENOMEM;
235
236out_delete:
04662523 237 zfree(&evsel->priv);
96695d44
NK		 238 return -ENOENT;
239}
240
ef503831 241static struct perf_evsel *perf_evsel__syscall_newtp(const char *direction, void *handler)
77170988 242{
ef503831 243 struct perf_evsel *evsel = perf_evsel__newtp("raw_syscalls", direction);
77170988 244
9aca7f17 245 /* older kernel (e.g., RHEL6) use syscalls:{enter,exit} */
8dd2a131 246 if (IS_ERR(evsel))
9aca7f17
DA		 247 evsel = perf_evsel__newtp("syscalls", direction);
248
8dd2a131
JO		 249 if (IS_ERR(evsel))
250 return NULL;
251
252 if (perf_evsel__init_syscall_tp(evsel, handler))
253 goto out_delete;
77170988
ACM		 254
255 return evsel;
256
257out_delete:
258 perf_evsel__delete_priv(evsel);
259 return NULL;
260}
261
262#define perf_evsel__sc_tp_uint(evsel, name, sample) \
263 ({ struct syscall_tp *fields = evsel->priv; \
264 fields->name.integer(&fields->name, sample); })
265
266#define perf_evsel__sc_tp_ptr(evsel, name, sample) \
267 ({ struct syscall_tp *fields = evsel->priv; \
268 fields->name.pointer(&fields->name, sample); })
269
01533e97
ACM		 270struct syscall_arg {
271 unsigned long val;
75b757ca
ACM		 272 struct thread *thread;
273 struct trace *trace;
1f115cb7 274 void *parm;
01533e97
ACM		 275 u8 idx;
276 u8 mask;
277};
278
1f115cb7 279struct strarray {
03e3adc9 280 int offset;
1f115cb7
ACM		 281 int nr_entries;
282 const char **entries;
283};
284
285#define DEFINE_STRARRAY(array) struct strarray strarray__##array = { \
286 .nr_entries = ARRAY_SIZE(array), \
287 .entries = array, \
288}
289
03e3adc9
ACM		 290#define DEFINE_STRARRAY_OFFSET(array, off) struct strarray strarray__##array = { \
291 .offset = off, \
292 .nr_entries = ARRAY_SIZE(array), \
293 .entries = array, \
294}
295
975b7c2f
ACM		 296static size_t __syscall_arg__scnprintf_strarray(char *bf, size_t size,
297 const char *intfmt,
298 struct syscall_arg *arg)
1f115cb7 299{
1f115cb7 300 struct strarray *sa = arg->parm;
03e3adc9 301 int idx = arg->val - sa->offset;
1f115cb7
ACM		 302
303 if (idx < 0 || idx >= sa->nr_entries)
975b7c2f 304 return scnprintf(bf, size, intfmt, arg->val);
1f115cb7
ACM		 305
306 return scnprintf(bf, size, "%s", sa->entries[idx]);
307}
308
975b7c2f
ACM		 309static size_t syscall_arg__scnprintf_strarray(char *bf, size_t size,
310 struct syscall_arg *arg)
311{
312 return __syscall_arg__scnprintf_strarray(bf, size, "%d", arg);
313}
314
1f115cb7
ACM		 315#define SCA_STRARRAY syscall_arg__scnprintf_strarray
316
844ae5b4
ACM		 317#if defined(__i386__) || defined(__x86_64__)
318/*
319 * FIXME: Make this available to all arches as soon as the ioctl beautifier
320 * gets rewritten to support all arches.
321 */
78645cf3
ACM		 322static size_t syscall_arg__scnprintf_strhexarray(char *bf, size_t size,
323 struct syscall_arg *arg)
324{
325 return __syscall_arg__scnprintf_strarray(bf, size, "%#x", arg);
326}
327
328#define SCA_STRHEXARRAY syscall_arg__scnprintf_strhexarray
844ae5b4 329#endif /* defined(__i386__) || defined(__x86_64__) */
78645cf3 330
75b757ca
ACM		 331static size_t syscall_arg__scnprintf_fd(char *bf, size_t size,
332 struct syscall_arg *arg);
333
334#define SCA_FD syscall_arg__scnprintf_fd
335
48e1f91a
ACM		 336#ifndef AT_FDCWD
337#define AT_FDCWD -100
338#endif
339
75b757ca
ACM		 340static 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
353static 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
6e7eeb51 358static size_t syscall_arg__scnprintf_hex(char *bf, size_t size,
01533e97 359 struct syscall_arg *arg)
13d4ff3e 360{
01533e97 361 return scnprintf(bf, size, "%#lx", arg->val);
13d4ff3e
ACM		 362}
363
beccb2b5
ACM		 364#define SCA_HEX syscall_arg__scnprintf_hex
365
a1c2552d
ACM		 366static 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
729a7841
ACM		 374static const char *bpf_cmd[] = {
375 "MAP_CREATE", "MAP_LOOKUP_ELEM", "MAP_UPDATE_ELEM", "MAP_DELETE_ELEM",
376 "MAP_GET_NEXT_KEY", "PROG_LOAD",
377};
378static DEFINE_STRARRAY(bpf_cmd);
379
03e3adc9
ACM		 380static const char *epoll_ctl_ops[] = { "ADD", "DEL", "MOD", };
381static DEFINE_STRARRAY_OFFSET(epoll_ctl_ops, 1);
eac032c5 382
1f115cb7
ACM		 383static const char *itimers[] = { "REAL", "VIRTUAL", "PROF", };
384static DEFINE_STRARRAY(itimers);
385
b62bee1b
ACM		 386static const char *keyctl_options[] = {
387 "GET_KEYRING_ID", "JOIN_SESSION_KEYRING", "UPDATE", "REVOKE", "CHOWN",
388 "SETPERM", "DESCRIBE", "CLEAR", "LINK", "UNLINK", "SEARCH", "READ",
389 "INSTANTIATE", "NEGATE", "SET_REQKEY_KEYRING", "SET_TIMEOUT",
390 "ASSUME_AUTHORITY", "GET_SECURITY", "SESSION_TO_PARENT", "REJECT",
391 "INSTANTIATE_IOV", "INVALIDATE", "GET_PERSISTENT",
392};
393static DEFINE_STRARRAY(keyctl_options);
394
efe6b882
ACM		 395static const char *whences[] = { "SET", "CUR", "END",
396#ifdef SEEK_DATA
397"DATA",
398#endif
399#ifdef SEEK_HOLE
400"HOLE",
401#endif
402};
403static DEFINE_STRARRAY(whences);
f9da0b0c 404
80f587d5
ACM		 405static const char *fcntl_cmds[] = {
406 "DUPFD", "GETFD", "SETFD", "GETFL", "SETFL", "GETLK", "SETLK",
407 "SETLKW", "SETOWN", "GETOWN", "SETSIG", "GETSIG", "F_GETLK64",
408 "F_SETLK64", "F_SETLKW64", "F_SETOWN_EX", "F_GETOWN_EX",
409 "F_GETOWNER_UIDS",
410};
411static DEFINE_STRARRAY(fcntl_cmds);
412
c045bf02
ACM		 413static const char *rlimit_resources[] = {
414 "CPU", "FSIZE", "DATA", "STACK", "CORE", "RSS", "NPROC", "NOFILE",
415 "MEMLOCK", "AS", "LOCKS", "SIGPENDING", "MSGQUEUE", "NICE", "RTPRIO",
416 "RTTIME",
417};
418static DEFINE_STRARRAY(rlimit_resources);
419
eb5b1b14
ACM		 420static const char *sighow[] = { "BLOCK", "UNBLOCK", "SETMASK", };
421static DEFINE_STRARRAY(sighow);
422
4f8c1b74
DA		 423static const char *clockid[] = {
424 "REALTIME", "MONOTONIC", "PROCESS_CPUTIME_ID", "THREAD_CPUTIME_ID",
28ebb87c
ACM		 425 "MONOTONIC_RAW", "REALTIME_COARSE", "MONOTONIC_COARSE", "BOOTTIME",
426 "REALTIME_ALARM", "BOOTTIME_ALARM", "SGI_CYCLE", "TAI"
4f8c1b74
DA		 427};
428static DEFINE_STRARRAY(clockid);
429
e10bce81
ACM		 430static const char *socket_families[] = {
431 "UNSPEC", "LOCAL", "INET", "AX25", "IPX", "APPLETALK", "NETROM",
432 "BRIDGE", "ATMPVC", "X25", "INET6", "ROSE", "DECnet", "NETBEUI",
433 "SECURITY", "KEY", "NETLINK", "PACKET", "ASH", "ECONET", "ATMSVC",
434 "RDS", "SNA", "IRDA", "PPPOX", "WANPIPE", "LLC", "IB", "CAN", "TIPC",
435 "BLUETOOTH", "IUCV", "RXRPC", "ISDN", "PHONET", "IEEE802154", "CAIF",
436 "ALG", "NFC", "VSOCK",
437};
438static DEFINE_STRARRAY(socket_families);
439
51108999
ACM		 440static size_t syscall_arg__scnprintf_access_mode(char *bf, size_t size,
441 struct syscall_arg *arg)
442{
443 size_t printed = 0;
444 int mode = arg->val;
445
446 if (mode == F_OK) /* 0 */
447 return scnprintf(bf, size, "F");
448#define P_MODE(n) \
449 if (mode & n##_OK) { \
450 printed += scnprintf(bf + printed, size - printed, "%s", #n); \
451 mode &= ~n##_OK; \
452 }
453
454 P_MODE(R);
455 P_MODE(W);
456 P_MODE(X);
457#undef P_MODE
458
459 if (mode)
460 printed += scnprintf(bf + printed, size - printed, "|%#x", mode);
461
462 return printed;
463}
464
465#define SCA_ACCMODE syscall_arg__scnprintf_access_mode
466
f994592d
ACM		 467static size_t syscall_arg__scnprintf_filename(char *bf, size_t size,
468 struct syscall_arg *arg);
469
470#define SCA_FILENAME syscall_arg__scnprintf_filename
471
46cce19b
ACM		 472static size_t syscall_arg__scnprintf_pipe_flags(char *bf, size_t size,
473 struct syscall_arg *arg)
474{
475 int printed = 0, flags = arg->val;
476
477#define P_FLAG(n) \
478 if (flags & O_##n) { \
479 printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \
480 flags &= ~O_##n; \
481 }
482
483 P_FLAG(CLOEXEC);
484 P_FLAG(NONBLOCK);
485#undef P_FLAG
486
487 if (flags)
488 printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags);
489
490 return printed;
491}
492
493#define SCA_PIPE_FLAGS syscall_arg__scnprintf_pipe_flags
494
844ae5b4
ACM		 495#if defined(__i386__) || defined(__x86_64__)
496/*
497 * FIXME: Make this available to all arches.
498 */
78645cf3
ACM		 499#define TCGETS 0x5401
500
501static const char *tioctls[] = {
502 "TCGETS", "TCSETS", "TCSETSW", "TCSETSF", "TCGETA", "TCSETA", "TCSETAW",
503 "TCSETAF", "TCSBRK", "TCXONC", "TCFLSH", "TIOCEXCL", "TIOCNXCL",
504 "TIOCSCTTY", "TIOCGPGRP", "TIOCSPGRP", "TIOCOUTQ", "TIOCSTI",
505 "TIOCGWINSZ", "TIOCSWINSZ", "TIOCMGET", "TIOCMBIS", "TIOCMBIC",
506 "TIOCMSET", "TIOCGSOFTCAR", "TIOCSSOFTCAR", "FIONREAD", "TIOCLINUX",
507 "TIOCCONS", "TIOCGSERIAL", "TIOCSSERIAL", "TIOCPKT", "FIONBIO",
508 "TIOCNOTTY", "TIOCSETD", "TIOCGETD", "TCSBRKP", [0x27] = "TIOCSBRK",
509 "TIOCCBRK", "TIOCGSID", "TCGETS2", "TCSETS2", "TCSETSW2", "TCSETSF2",
510 "TIOCGRS485", "TIOCSRS485", "TIOCGPTN", "TIOCSPTLCK",
511 "TIOCGDEV||TCGETX", "TCSETX", "TCSETXF", "TCSETXW", "TIOCSIG",
512 "TIOCVHANGUP", "TIOCGPKT", "TIOCGPTLCK", "TIOCGEXCL",
513 [0x50] = "FIONCLEX", "FIOCLEX", "FIOASYNC", "TIOCSERCONFIG",
514 "TIOCSERGWILD", "TIOCSERSWILD", "TIOCGLCKTRMIOS", "TIOCSLCKTRMIOS",
515 "TIOCSERGSTRUCT", "TIOCSERGETLSR", "TIOCSERGETMULTI", "TIOCSERSETMULTI",
516 "TIOCMIWAIT", "TIOCGICOUNT", [0x60] = "FIOQSIZE",
517};
518
519static DEFINE_STRARRAY_OFFSET(tioctls, 0x5401);
844ae5b4 520#endif /* defined(__i386__) || defined(__x86_64__) */
78645cf3 521
a355a61e
ACM		 522#ifndef GRND_NONBLOCK
523#define GRND_NONBLOCK 0x0001
524#endif
525#ifndef GRND_RANDOM
526#define GRND_RANDOM 0x0002
527#endif
528
39878d49
ACM		 529static size_t syscall_arg__scnprintf_getrandom_flags(char *bf, size_t size,
530 struct syscall_arg *arg)
531{
532 int printed = 0, flags = arg->val;
533
534#define P_FLAG(n) \
535 if (flags & GRND_##n) { \
536 printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \
537 flags &= ~GRND_##n; \
538 }
539
540 P_FLAG(RANDOM);
541 P_FLAG(NONBLOCK);
542#undef P_FLAG
543
544 if (flags)
545 printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags);
546
547 return printed;
548}
549
550#define SCA_GETRANDOM_FLAGS syscall_arg__scnprintf_getrandom_flags
551
453350dd
ACM		 552#define STRARRAY(arg, name, array) \
553 .arg_scnprintf = { [arg] = SCA_STRARRAY, }, \
554 .arg_parm = { [arg] = &strarray__##array, }
555
ea8dc3ce 556#include "trace/beauty/eventfd.c"
8bf382ce 557#include "trace/beauty/flock.c"
d5d71e86 558#include "trace/beauty/futex_op.c"
df4cb167 559#include "trace/beauty/mmap.c"
ba2f22cf 560#include "trace/beauty/mode_t.c"
a30e6259 561#include "trace/beauty/msg_flags.c"
8f48df69 562#include "trace/beauty/open_flags.c"
62de344e 563#include "trace/beauty/perf_event_open.c"
d5d71e86 564#include "trace/beauty/pid.c"
a3bca91f 565#include "trace/beauty/sched_policy.c"
f5cd95ea 566#include "trace/beauty/seccomp.c"
12199d8e 567#include "trace/beauty/signum.c"
bbf86c43 568#include "trace/beauty/socket_type.c"
7206b900 569#include "trace/beauty/waitid_options.c"
a3bca91f 570
514f1c67
ACM		 571static struct syscall_fmt {
572 const char *name;
aec1930b 573 const char *alias;
01533e97 574 size_t (*arg_scnprintf[6])(char *bf, size_t size, struct syscall_arg *arg);
1f115cb7 575 void *arg_parm[6];
514f1c67 576 bool errmsg;
11c8e39f 577 bool errpid;
514f1c67 578 bool timeout;
04b34729 579 bool hexret;
514f1c67 580} syscall_fmts[] = {
51108999 581 { .name = "access", .errmsg = true,
12f3ca4f 582 .arg_scnprintf = { [1] = SCA_ACCMODE, /* mode */ }, },
aec1930b 583 { .name = "arch_prctl", .errmsg = true, .alias = "prctl", },
729a7841 584 { .name = "bpf", .errmsg = true, STRARRAY(0, cmd, bpf_cmd), },
beccb2b5
ACM		 585 { .name = "brk", .hexret = true,
586 .arg_scnprintf = { [0] = SCA_HEX, /* brk */ }, },
12f3ca4f
ACM		 587 { .name = "chdir", .errmsg = true, },
588 { .name = "chmod", .errmsg = true, },
589 { .name = "chroot", .errmsg = true, },
4f8c1b74 590 { .name = "clock_gettime", .errmsg = true, STRARRAY(0, clk_id, clockid), },
11c8e39f 591 { .name = "clone", .errpid = true, },
75b757ca 592 { .name = "close", .errmsg = true,
48000a1a 593 .arg_scnprintf = { [0] = SCA_CLOSE_FD, /* fd */ }, },
a14bb860 594 { .name = "connect", .errmsg = true, },
12f3ca4f 595 { .name = "creat", .errmsg = true, },
b6565c90
ACM		 596 { .name = "dup", .errmsg = true, },
597 { .name = "dup2", .errmsg = true, },
598 { .name = "dup3", .errmsg = true, },
453350dd 599 { .name = "epoll_ctl", .errmsg = true, STRARRAY(1, op, epoll_ctl_ops), },
49af9e93
ACM		 600 { .name = "eventfd2", .errmsg = true,
601 .arg_scnprintf = { [1] = SCA_EFD_FLAGS, /* flags */ }, },
12f3ca4f 602 { .name = "faccessat", .errmsg = true, },
b6565c90
ACM		 603 { .name = "fadvise64", .errmsg = true, },
604 { .name = "fallocate", .errmsg = true, },
605 { .name = "fchdir", .errmsg = true, },
606 { .name = "fchmod", .errmsg = true, },
75b757ca 607 { .name = "fchmodat", .errmsg = true,
12f3ca4f 608 .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ }, },
b6565c90 609 { .name = "fchown", .errmsg = true, },
75b757ca 610 { .name = "fchownat", .errmsg = true,
12f3ca4f 611 .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ }, },
75b757ca 612 { .name = "fcntl", .errmsg = true,
b6565c90 613 .arg_scnprintf = { [1] = SCA_STRARRAY, /* cmd */ },
75b757ca 614 .arg_parm = { [1] = &strarray__fcntl_cmds, /* cmd */ }, },
b6565c90 615 { .name = "fdatasync", .errmsg = true, },
5cea6ff2 616 { .name = "flock", .errmsg = true,
b6565c90
ACM		 617 .arg_scnprintf = { [1] = SCA_FLOCK, /* cmd */ }, },
618 { .name = "fsetxattr", .errmsg = true, },
619 { .name = "fstat", .errmsg = true, .alias = "newfstat", },
12f3ca4f 620 { .name = "fstatat", .errmsg = true, .alias = "newfstatat", },
b6565c90
ACM		 621 { .name = "fstatfs", .errmsg = true, },
622 { .name = "fsync", .errmsg = true, },
623 { .name = "ftruncate", .errmsg = true, },
f9da0b0c
ACM		 624 { .name = "futex", .errmsg = true,
625 .arg_scnprintf = { [1] = SCA_FUTEX_OP, /* op */ }, },
75b757ca 626 { .name = "futimesat", .errmsg = true,
12f3ca4f 627 .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ }, },
b6565c90
ACM		 628 { .name = "getdents", .errmsg = true, },
629 { .name = "getdents64", .errmsg = true, },
453350dd 630 { .name = "getitimer", .errmsg = true, STRARRAY(0, which, itimers), },
c65f1070 631 { .name = "getpid", .errpid = true, },
d1d438a3 632 { .name = "getpgid", .errpid = true, },
c65f1070 633 { .name = "getppid", .errpid = true, },
39878d49
ACM		 634 { .name = "getrandom", .errmsg = true,
635 .arg_scnprintf = { [2] = SCA_GETRANDOM_FLAGS, /* flags */ }, },
453350dd 636 { .name = "getrlimit", .errmsg = true, STRARRAY(0, resource, rlimit_resources), },
12f3ca4f
ACM		 637 { .name = "getxattr", .errmsg = true, },
638 { .name = "inotify_add_watch", .errmsg = true, },
beccb2b5 639 { .name = "ioctl", .errmsg = true,
b6565c90 640 .arg_scnprintf = {
844ae5b4
ACM		 641#if defined(__i386__) || defined(__x86_64__)
642/*
643 * FIXME: Make this available to all arches.
644 */
78645cf3
ACM		 645 [1] = SCA_STRHEXARRAY, /* cmd */
646 [2] = SCA_HEX, /* arg */ },
647 .arg_parm = { [1] = &strarray__tioctls, /* cmd */ }, },
844ae5b4
ACM		 648#else
649 [2] = SCA_HEX, /* arg */ }, },
650#endif
b62bee1b 651 { .name = "keyctl", .errmsg = true, STRARRAY(0, option, keyctl_options), },
8bad5b0a
ACM		 652 { .name = "kill", .errmsg = true,
653 .arg_scnprintf = { [1] = SCA_SIGNUM, /* sig */ }, },
12f3ca4f
ACM		 654 { .name = "lchown", .errmsg = true, },
655 { .name = "lgetxattr", .errmsg = true, },
75b757ca 656 { .name = "linkat", .errmsg = true,
48000a1a 657 .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ }, },
12f3ca4f
ACM		 658 { .name = "listxattr", .errmsg = true, },
659 { .name = "llistxattr", .errmsg = true, },
660 { .name = "lremovexattr", .errmsg = true, },
75b757ca 661 { .name = "lseek", .errmsg = true,
b6565c90 662 .arg_scnprintf = { [2] = SCA_STRARRAY, /* whence */ },
75b757ca 663 .arg_parm = { [2] = &strarray__whences, /* whence */ }, },
12f3ca4f
ACM		 664 { .name = "lsetxattr", .errmsg = true, },
665 { .name = "lstat", .errmsg = true, .alias = "newlstat", },
666 { .name = "lsxattr", .errmsg = true, },
9e9716d1
ACM		 667 { .name = "madvise", .errmsg = true,
668 .arg_scnprintf = { [0] = SCA_HEX, /* start */
669 [2] = SCA_MADV_BHV, /* behavior */ }, },
12f3ca4f 670 { .name = "mkdir", .errmsg = true, },
75b757ca 671 { .name = "mkdirat", .errmsg = true,
12f3ca4f
ACM		 672 .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ }, },
673 { .name = "mknod", .errmsg = true, },
75b757ca 674 { .name = "mknodat", .errmsg = true,
12f3ca4f 675 .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ }, },
3d903aa7
ACM		 676 { .name = "mlock", .errmsg = true,
677 .arg_scnprintf = { [0] = SCA_HEX, /* addr */ }, },
678 { .name = "mlockall", .errmsg = true,
679 .arg_scnprintf = { [0] = SCA_HEX, /* addr */ }, },
beccb2b5 680 { .name = "mmap", .hexret = true,
ae685380 681 .arg_scnprintf = { [0] = SCA_HEX, /* addr */
941557e0 682 [2] = SCA_MMAP_PROT, /* prot */
b6565c90 683 [3] = SCA_MMAP_FLAGS, /* flags */ }, },
beccb2b5 684 { .name = "mprotect", .errmsg = true,
ae685380
ACM		 685 .arg_scnprintf = { [0] = SCA_HEX, /* start */
686 [2] = SCA_MMAP_PROT, /* prot */ }, },
090389b6
ACM		 687 { .name = "mq_unlink", .errmsg = true,
688 .arg_scnprintf = { [0] = SCA_FILENAME, /* u_name */ }, },
ae685380
ACM		 689 { .name = "mremap", .hexret = true,
690 .arg_scnprintf = { [0] = SCA_HEX, /* addr */
86998dda 691 [3] = SCA_MREMAP_FLAGS, /* flags */
ae685380 692 [4] = SCA_HEX, /* new_addr */ }, },
3d903aa7
ACM		 693 { .name = "munlock", .errmsg = true,
694 .arg_scnprintf = { [0] = SCA_HEX, /* addr */ }, },
beccb2b5
ACM		 695 { .name = "munmap", .errmsg = true,
696 .arg_scnprintf = { [0] = SCA_HEX, /* addr */ }, },
75b757ca 697 { .name = "name_to_handle_at", .errmsg = true,
48000a1a 698 .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ }, },
75b757ca 699 { .name = "newfstatat", .errmsg = true,
12f3ca4f 700 .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ }, },
be65a89a 701 { .name = "open", .errmsg = true,
12f3ca4f 702 .arg_scnprintf = { [1] = SCA_OPEN_FLAGS, /* flags */ }, },
31cd3855 703 { .name = "open_by_handle_at", .errmsg = true,
75b757ca
ACM		 704 .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */
705 [2] = SCA_OPEN_FLAGS, /* flags */ }, },
31cd3855 706 { .name = "openat", .errmsg = true,
75b757ca
ACM		 707 .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */
708 [2] = SCA_OPEN_FLAGS, /* flags */ }, },
a1c2552d 709 { .name = "perf_event_open", .errmsg = true,
ccd9b2a7 710 .arg_scnprintf = { [2] = SCA_INT, /* cpu */
a1c2552d
ACM		 711 [3] = SCA_FD, /* group_fd */
712 [4] = SCA_PERF_FLAGS, /* flags */ }, },
46cce19b
ACM		 713 { .name = "pipe2", .errmsg = true,
714 .arg_scnprintf = { [1] = SCA_PIPE_FLAGS, /* flags */ }, },
aec1930b
ACM		 715 { .name = "poll", .errmsg = true, .timeout = true, },
716 { .name = "ppoll", .errmsg = true, .timeout = true, },
b6565c90
ACM		 717 { .name = "pread", .errmsg = true, .alias = "pread64", },
718 { .name = "preadv", .errmsg = true, .alias = "pread", },
453350dd 719 { .name = "prlimit64", .errmsg = true, STRARRAY(1, resource, rlimit_resources), },
b6565c90
ACM		 720 { .name = "pwrite", .errmsg = true, .alias = "pwrite64", },
721 { .name = "pwritev", .errmsg = true, },
722 { .name = "read", .errmsg = true, },
12f3ca4f 723 { .name = "readlink", .errmsg = true, },
75b757ca 724 { .name = "readlinkat", .errmsg = true,
12f3ca4f 725 .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ }, },
b6565c90 726 { .name = "readv", .errmsg = true, },
b2cc99fd 727 { .name = "recvfrom", .errmsg = true,
b6565c90 728 .arg_scnprintf = { [3] = SCA_MSG_FLAGS, /* flags */ }, },
b2cc99fd 729 { .name = "recvmmsg", .errmsg = true,
b6565c90 730 .arg_scnprintf = { [3] = SCA_MSG_FLAGS, /* flags */ }, },
b2cc99fd 731 { .name = "recvmsg", .errmsg = true,
b6565c90 732 .arg_scnprintf = { [2] = SCA_MSG_FLAGS, /* flags */ }, },
12f3ca4f 733 { .name = "removexattr", .errmsg = true, },
75b757ca 734 { .name = "renameat", .errmsg = true,
48000a1a 735 .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ }, },
12f3ca4f 736 { .name = "rmdir", .errmsg = true, },
8bad5b0a
ACM		 737 { .name = "rt_sigaction", .errmsg = true,
738 .arg_scnprintf = { [0] = SCA_SIGNUM, /* sig */ }, },
453350dd 739 { .name = "rt_sigprocmask", .errmsg = true, STRARRAY(0, how, sighow), },
8bad5b0a
ACM		 740 { .name = "rt_sigqueueinfo", .errmsg = true,
741 .arg_scnprintf = { [1] = SCA_SIGNUM, /* sig */ }, },
742 { .name = "rt_tgsigqueueinfo", .errmsg = true,
743 .arg_scnprintf = { [2] = SCA_SIGNUM, /* sig */ }, },
f0bbd602
ACM		 744 { .name = "sched_getattr", .errmsg = true, },
745 { .name = "sched_setattr", .errmsg = true, },
a3bca91f
ACM		 746 { .name = "sched_setscheduler", .errmsg = true,
747 .arg_scnprintf = { [1] = SCA_SCHED_POLICY, /* policy */ }, },
997bba8c
ACM		 748 { .name = "seccomp", .errmsg = true,
749 .arg_scnprintf = { [0] = SCA_SECCOMP_OP, /* op */
750 [1] = SCA_SECCOMP_FLAGS, /* flags */ }, },
aec1930b 751 { .name = "select", .errmsg = true, .timeout = true, },
b2cc99fd 752 { .name = "sendmmsg", .errmsg = true,
b6565c90 753 .arg_scnprintf = { [3] = SCA_MSG_FLAGS, /* flags */ }, },
b2cc99fd 754 { .name = "sendmsg", .errmsg = true,
b6565c90 755 .arg_scnprintf = { [2] = SCA_MSG_FLAGS, /* flags */ }, },
b2cc99fd 756 { .name = "sendto", .errmsg = true,
b6565c90 757 .arg_scnprintf = { [3] = SCA_MSG_FLAGS, /* flags */ }, },
c65f1070 758 { .name = "set_tid_address", .errpid = true, },
453350dd 759 { .name = "setitimer", .errmsg = true, STRARRAY(0, which, itimers), },
d1d438a3 760 { .name = "setpgid", .errmsg = true, },
453350dd 761 { .name = "setrlimit", .errmsg = true, STRARRAY(0, resource, rlimit_resources), },
12f3ca4f 762 { .name = "setxattr", .errmsg = true, },
b6565c90 763 { .name = "shutdown", .errmsg = true, },
e10bce81 764 { .name = "socket", .errmsg = true,
a28b24b2
ACM		 765 .arg_scnprintf = { [0] = SCA_STRARRAY, /* family */
766 [1] = SCA_SK_TYPE, /* type */ },
07120aa5
ACM		 767 .arg_parm = { [0] = &strarray__socket_families, /* family */ }, },
768 { .name = "socketpair", .errmsg = true,
769 .arg_scnprintf = { [0] = SCA_STRARRAY, /* family */
770 [1] = SCA_SK_TYPE, /* type */ },
e10bce81 771 .arg_parm = { [0] = &strarray__socket_families, /* family */ }, },
12f3ca4f
ACM		 772 { .name = "stat", .errmsg = true, .alias = "newstat", },
773 { .name = "statfs", .errmsg = true, },
34221118
ACM		 774 { .name = "swapoff", .errmsg = true,
775 .arg_scnprintf = { [0] = SCA_FILENAME, /* specialfile */ }, },
776 { .name = "swapon", .errmsg = true,
777 .arg_scnprintf = { [0] = SCA_FILENAME, /* specialfile */ }, },
75b757ca 778 { .name = "symlinkat", .errmsg = true,
48000a1a 779 .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ }, },
8bad5b0a
ACM		 780 { .name = "tgkill", .errmsg = true,
781 .arg_scnprintf = { [2] = SCA_SIGNUM, /* sig */ }, },
782 { .name = "tkill", .errmsg = true,
783 .arg_scnprintf = { [1] = SCA_SIGNUM, /* sig */ }, },
12f3ca4f 784 { .name = "truncate", .errmsg = true, },
e5959683 785 { .name = "uname", .errmsg = true, .alias = "newuname", },
75b757ca 786 { .name = "unlinkat", .errmsg = true,
12f3ca4f
ACM		 787 .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ }, },
788 { .name = "utime", .errmsg = true, },
75b757ca 789 { .name = "utimensat", .errmsg = true,
12f3ca4f
ACM		 790 .arg_scnprintf = { [0] = SCA_FDAT, /* dirfd */ }, },
791 { .name = "utimes", .errmsg = true, },
b6565c90 792 { .name = "vmsplice", .errmsg = true, },
11c8e39f 793 { .name = "wait4", .errpid = true,
7206b900 794 .arg_scnprintf = { [2] = SCA_WAITID_OPTIONS, /* options */ }, },
11c8e39f 795 { .name = "waitid", .errpid = true,
7206b900 796 .arg_scnprintf = { [3] = SCA_WAITID_OPTIONS, /* options */ }, },
b6565c90
ACM		 797 { .name = "write", .errmsg = true, },
798 { .name = "writev", .errmsg = true, },
514f1c67
ACM		 799};
800
801static int syscall_fmt__cmp(const void *name, const void *fmtp)
802{
803 const struct syscall_fmt *fmt = fmtp;
804 return strcmp(name, fmt->name);
805}
806
807static struct syscall_fmt *syscall_fmt__find(const char *name)
808{
809 const int nmemb = ARRAY_SIZE(syscall_fmts);
810 return bsearch(name, syscall_fmts, nmemb, sizeof(struct syscall_fmt), syscall_fmt__cmp);
811}
812
813struct syscall {
814 struct event_format *tp_format;
f208bd8d
ACM		 815 int nr_args;
816 struct format_field *args;
514f1c67 817 const char *name;
5089f20e 818 bool is_exit;
514f1c67 819 struct syscall_fmt *fmt;
01533e97 820 size_t (**arg_scnprintf)(char *bf, size_t size, struct syscall_arg *arg);
1f115cb7 821 void **arg_parm;
514f1c67
ACM		 822};
823
60c907ab
ACM		 824static size_t fprintf_duration(unsigned long t, FILE *fp)
825{
826 double duration = (double)t / NSEC_PER_MSEC;
827 size_t printed = fprintf(fp, "(");
828
829 if (duration >= 1.0)
830 printed += color_fprintf(fp, PERF_COLOR_RED, "%6.3f ms", duration);
831 else if (duration >= 0.01)
832 printed += color_fprintf(fp, PERF_COLOR_YELLOW, "%6.3f ms", duration);
833 else
834 printed += color_fprintf(fp, PERF_COLOR_NORMAL, "%6.3f ms", duration);
c24ff998 835 return printed + fprintf(fp, "): ");
60c907ab
ACM		 836}
837
f994592d
ACM		 838/**
839 * filename.ptr: The filename char pointer that will be vfs_getname'd
840 * filename.entry_str_pos: Where to insert the string translated from
841 * filename.ptr by the vfs_getname tracepoint/kprobe.
842 */
752fde44
ACM		 843struct thread_trace {
844 u64 entry_time;
752fde44 845 bool entry_pending;
efd5745e 846 unsigned long nr_events;
a2ea67d7 847 unsigned long pfmaj, pfmin;
752fde44 848 char *entry_str;
1302d88e 849 double runtime_ms;
f994592d
ACM		 850 struct {
851 unsigned long ptr;
7f4f8001
ACM		 852 short int entry_str_pos;
853 bool pending_open;
854 unsigned int namelen;
855 char *name;
f994592d 856 } filename;
75b757ca
ACM		 857 struct {
858 int max;
859 char **table;
860 } paths;
bf2575c1
DA		 861
862 struct intlist *syscall_stats;
752fde44
ACM		 863};
864
865static struct thread_trace *thread_trace__new(void)
866{
75b757ca
ACM		 867 struct thread_trace *ttrace = zalloc(sizeof(struct thread_trace));
868
869 if (ttrace)
870 ttrace->paths.max = -1;
871
bf2575c1
DA		 872 ttrace->syscall_stats = intlist__new(NULL);
873
75b757ca 874 return ttrace;
752fde44
ACM		 875}
876
c24ff998 877static struct thread_trace *thread__trace(struct thread *thread, FILE *fp)
752fde44 878{
efd5745e
ACM		 879 struct thread_trace *ttrace;
880
752fde44
ACM		 881 if (thread == NULL)
882 goto fail;
883
89dceb22
NK		 884 if (thread__priv(thread) == NULL)
885 thread__set_priv(thread, thread_trace__new());
48000a1a 886
89dceb22 887 if (thread__priv(thread) == NULL)
752fde44
ACM		 888 goto fail;
889
89dceb22 890 ttrace = thread__priv(thread);
efd5745e
ACM		 891 ++ttrace->nr_events;
892
893 return ttrace;
752fde44 894fail:
c24ff998 895 color_fprintf(fp, PERF_COLOR_RED,
752fde44
ACM		 896 "WARNING: not enough memory, dropping samples!\n");
897 return NULL;
898}
899
598d02c5
SF		 900#define TRACE_PFMAJ (1 << 0)
901#define TRACE_PFMIN (1 << 1)
902
e4d44e83
ACM		 903static const size_t trace__entry_str_size = 2048;
904
97119f37 905static int trace__set_fd_pathname(struct thread *thread, int fd, const char *pathname)
75b757ca 906{
89dceb22 907 struct thread_trace *ttrace = thread__priv(thread);
75b757ca
ACM		 908
909 if (fd > ttrace->paths.max) {
910 char **npath = realloc(ttrace->paths.table, (fd + 1) * sizeof(char *));
911
912 if (npath == NULL)
913 return -1;
914
915 if (ttrace->paths.max != -1) {
916 memset(npath + ttrace->paths.max + 1, 0,
917 (fd - ttrace->paths.max) * sizeof(char *));
918 } else {
919 memset(npath, 0, (fd + 1) * sizeof(char *));
920 }
921
922 ttrace->paths.table = npath;
923 ttrace->paths.max = fd;
924 }
925
926 ttrace->paths.table[fd] = strdup(pathname);
927
928 return ttrace->paths.table[fd] != NULL ? 0 : -1;
929}
930
97119f37
ACM		 931static int thread__read_fd_path(struct thread *thread, int fd)
932{
933 char linkname[PATH_MAX], pathname[PATH_MAX];
934 struct stat st;
935 int ret;
936
937 if (thread->pid_ == thread->tid) {
938 scnprintf(linkname, sizeof(linkname),
939 "/proc/%d/fd/%d", thread->pid_, fd);
940 } else {
941 scnprintf(linkname, sizeof(linkname),
942 "/proc/%d/task/%d/fd/%d", thread->pid_, thread->tid, fd);
943 }
944
945 if (lstat(linkname, &st) < 0 || st.st_size + 1 > (off_t)sizeof(pathname))
946 return -1;
947
948 ret = readlink(linkname, pathname, sizeof(pathname));
949
950 if (ret < 0 || ret > st.st_size)
951 return -1;
952
953 pathname[ret] = '\0';
954 return trace__set_fd_pathname(thread, fd, pathname);
955}
956
c522739d
ACM		 957static const char *thread__fd_path(struct thread *thread, int fd,
958 struct trace *trace)
75b757ca 959{
89dceb22 960 struct thread_trace *ttrace = thread__priv(thread);
75b757ca
ACM		 961
962 if (ttrace == NULL)
963 return NULL;
964
965 if (fd < 0)
966 return NULL;
967
cdcd1e6b 968 if ((fd > ttrace->paths.max || ttrace->paths.table[fd] == NULL)) {
c522739d
ACM		 969 if (!trace->live)
970 return NULL;
971 ++trace->stats.proc_getname;
cdcd1e6b 972 if (thread__read_fd_path(thread, fd))
c522739d
ACM		 973 return NULL;
974 }
75b757ca
ACM		 975
976 return ttrace->paths.table[fd];
977}
978
979static size_t syscall_arg__scnprintf_fd(char *bf, size_t size,
980 struct syscall_arg *arg)
981{
982 int fd = arg->val;
983 size_t printed = scnprintf(bf, size, "%d", fd);
c522739d 984 const char *path = thread__fd_path(arg->thread, fd, arg->trace);
75b757ca
ACM		 985
986 if (path)
987 printed += scnprintf(bf + printed, size - printed, "<%s>", path);
988
989 return printed;
990}
991
992static size_t syscall_arg__scnprintf_close_fd(char *bf, size_t size,
993 struct syscall_arg *arg)
994{
995 int fd = arg->val;
996 size_t printed = syscall_arg__scnprintf_fd(bf, size, arg);
89dceb22 997 struct thread_trace *ttrace = thread__priv(arg->thread);
75b757ca 998
04662523
ACM		 999 if (ttrace && fd >= 0 && fd <= ttrace->paths.max)
1000 zfree(&ttrace->paths.table[fd]);
75b757ca
ACM		 1001
1002 return printed;
1003}
1004
f994592d
ACM		 1005static void thread__set_filename_pos(struct thread *thread, const char *bf,
1006 unsigned long ptr)
1007{
1008 struct thread_trace *ttrace = thread__priv(thread);
1009
1010 ttrace->filename.ptr = ptr;
1011 ttrace->filename.entry_str_pos = bf - ttrace->entry_str;
1012}
1013
1014static size_t syscall_arg__scnprintf_filename(char *bf, size_t size,
1015 struct syscall_arg *arg)
1016{
1017 unsigned long ptr = arg->val;
1018
1019 if (!arg->trace->vfs_getname)
1020 return scnprintf(bf, size, "%#x", ptr);
1021
1022 thread__set_filename_pos(arg->thread, bf, ptr);
1023 return 0;
1024}
1025
ae9ed035
ACM		 1026static bool trace__filter_duration(struct trace *trace, double t)
1027{
1028 return t < (trace->duration_filter * NSEC_PER_MSEC);
1029}
1030
752fde44
ACM		 1031static size_t trace__fprintf_tstamp(struct trace *trace, u64 tstamp, FILE *fp)
1032{
1033 double ts = (double)(tstamp - trace->base_time) / NSEC_PER_MSEC;
1034
60c907ab 1035 return fprintf(fp, "%10.3f ", ts);
752fde44
ACM		 1036}
1037
f15eb531 1038static bool done = false;
ba209f85 1039static bool interrupted = false;
f15eb531 1040
ba209f85 1041static void sig_handler(int sig)
f15eb531
NK		 1042{
1043 done = true;
ba209f85 1044 interrupted = sig == SIGINT;
f15eb531
NK		 1045}
1046
752fde44 1047static size_t trace__fprintf_entry_head(struct trace *trace, struct thread *thread,
60c907ab 1048 u64 duration, u64 tstamp, FILE *fp)
752fde44
ACM		 1049{
1050 size_t printed = trace__fprintf_tstamp(trace, tstamp, fp);
60c907ab 1051 printed += fprintf_duration(duration, fp);
752fde44 1052
50c95cbd
ACM		 1053 if (trace->multiple_threads) {
1054 if (trace->show_comm)
1902efe7 1055 printed += fprintf(fp, "%.14s/", thread__comm_str(thread));
38051234 1056 printed += fprintf(fp, "%d ", thread->tid);
50c95cbd 1057 }
752fde44
ACM		 1058
1059 return printed;
1060}
1061
c24ff998 1062static int trace__process_event(struct trace *trace, struct machine *machine,
162f0bef 1063 union perf_event *event, struct perf_sample *sample)
752fde44
ACM		 1064{
1065 int ret = 0;
1066
1067 switch (event->header.type) {
1068 case PERF_RECORD_LOST:
c24ff998 1069 color_fprintf(trace->output, PERF_COLOR_RED,
752fde44 1070 "LOST %" PRIu64 " events!\n", event->lost.lost);
162f0bef 1071 ret = machine__process_lost_event(machine, event, sample);
3ed5ca2e 1072 break;
752fde44 1073 default:
162f0bef 1074 ret = machine__process_event(machine, event, sample);
752fde44
ACM		 1075 break;
1076 }
1077
1078 return ret;
1079}
1080
c24ff998 1081static int trace__tool_process(struct perf_tool *tool,
752fde44 1082 union perf_event *event,
162f0bef 1083 struct perf_sample *sample,
752fde44
ACM		 1084 struct machine *machine)
1085{
c24ff998 1086 struct trace *trace = container_of(tool, struct trace, tool);
162f0bef 1087 return trace__process_event(trace, machine, event, sample);
752fde44
ACM		 1088}
1089
caf8a0d0
ACM		 1090static char *trace__machine__resolve_kernel_addr(void *vmachine, unsigned long long *addrp, char **modp)
1091{
1092 struct machine *machine = vmachine;
1093
1094 if (machine->kptr_restrict_warned)
1095 return NULL;
1096
1097 if (symbol_conf.kptr_restrict) {
1098 pr_warning("Kernel address maps (/proc/{kallsyms,modules}) are restricted.\n\n"
1099 "Check /proc/sys/kernel/kptr_restrict.\n\n"
1100 "Kernel samples will not be resolved.\n");
1101 machine->kptr_restrict_warned = true;
1102 return NULL;
1103 }
1104
1105 return machine__resolve_kernel_addr(vmachine, addrp, modp);
1106}
1107
752fde44
ACM		 1108static int trace__symbols_init(struct trace *trace, struct perf_evlist *evlist)
1109{
0a7e6d1b 1110 int err = symbol__init(NULL);
752fde44
ACM		 1111
1112 if (err)
1113 return err;
1114
8fb598e5
DA		 1115 trace->host = machine__new_host();
1116 if (trace->host == NULL)
1117 return -ENOMEM;
752fde44 1118
caf8a0d0 1119 if (trace_event__register_resolver(trace->host, trace__machine__resolve_kernel_addr) < 0)
706c3da4
ACM		 1120 return -errno;
1121
a33fbd56 1122 err = __machine__synthesize_threads(trace->host, &trace->tool, &trace->opts.target,
9d9cad76
KL		 1123 evlist->threads, trace__tool_process, false,
1124 trace->opts.proc_map_timeout);
752fde44
ACM		 1125 if (err)
1126 symbol__exit();
1127
1128 return err;
1129}
1130
13d4ff3e
ACM		 1131static int syscall__set_arg_fmts(struct syscall *sc)
1132{
1133 struct format_field *field;
b6565c90 1134 int idx = 0, len;
13d4ff3e 1135
f208bd8d 1136 sc->arg_scnprintf = calloc(sc->nr_args, sizeof(void *));
13d4ff3e
ACM		 1137 if (sc->arg_scnprintf == NULL)
1138 return -1;
1139
1f115cb7
ACM		 1140 if (sc->fmt)
1141 sc->arg_parm = sc->fmt->arg_parm;
1142
f208bd8d 1143 for (field = sc->args; field; field = field->next) {
beccb2b5
ACM		 1144 if (sc->fmt && sc->fmt->arg_scnprintf[idx])
1145 sc->arg_scnprintf[idx] = sc->fmt->arg_scnprintf[idx];
12f3ca4f
ACM		 1146 else if (strcmp(field->type, "const char *") == 0 &&
1147 (strcmp(field->name, "filename") == 0 ||
1148 strcmp(field->name, "path") == 0 ||
1149 strcmp(field->name, "pathname") == 0))
1150 sc->arg_scnprintf[idx] = SCA_FILENAME;
beccb2b5 1151 else if (field->flags & FIELD_IS_POINTER)
13d4ff3e 1152 sc->arg_scnprintf[idx] = syscall_arg__scnprintf_hex;
d1d438a3
ACM		 1153 else if (strcmp(field->type, "pid_t") == 0)
1154 sc->arg_scnprintf[idx] = SCA_PID;
ba2f22cf
ACM		 1155 else if (strcmp(field->type, "umode_t") == 0)
1156 sc->arg_scnprintf[idx] = SCA_MODE_T;
b6565c90
ACM		 1157 else if ((strcmp(field->type, "int") == 0 ||
1158 strcmp(field->type, "unsigned int") == 0 ||
1159 strcmp(field->type, "long") == 0) &&
1160 (len = strlen(field->name)) >= 2 &&
1161 strcmp(field->name + len - 2, "fd") == 0) {
1162 /*
1163 * /sys/kernel/tracing/events/syscalls/sys_enter*
1164 * egrep 'field:.*fd;' .../format|sed -r 's/.*field:([a-z ]+) [a-z_]*fd.+/\1/g'|sort|uniq -c
1165 * 65 int
1166 * 23 unsigned int
1167 * 7 unsigned long
1168 */
1169 sc->arg_scnprintf[idx] = SCA_FD;
1170 }
13d4ff3e
ACM		 1171 ++idx;
1172 }
1173
1174 return 0;
1175}
1176
514f1c67
ACM		 1177static int trace__read_syscall_info(struct trace *trace, int id)
1178{
1179 char tp_name[128];
1180 struct syscall *sc;
fd0db102 1181 const char *name = syscalltbl__name(trace->sctbl, id);
3a531260
ACM		 1182
1183 if (name == NULL)
1184 return -1;
514f1c67
ACM		 1185
1186 if (id > trace->syscalls.max) {
1187 struct syscall *nsyscalls = realloc(trace->syscalls.table, (id + 1) * sizeof(*sc));
1188
1189 if (nsyscalls == NULL)
1190 return -1;
1191
1192 if (trace->syscalls.max != -1) {
1193 memset(nsyscalls + trace->syscalls.max + 1, 0,
1194 (id - trace->syscalls.max) * sizeof(*sc));
1195 } else {
1196 memset(nsyscalls, 0, (id + 1) * sizeof(*sc));
1197 }
1198
1199 trace->syscalls.table = nsyscalls;
1200 trace->syscalls.max = id;
1201 }
1202
1203 sc = trace->syscalls.table + id;
3a531260 1204 sc->name = name;
2ae3a312 1205
3a531260 1206 sc->fmt = syscall_fmt__find(sc->name);
514f1c67 1207
aec1930b 1208 snprintf(tp_name, sizeof(tp_name), "sys_enter_%s", sc->name);
97978b3e 1209 sc->tp_format = trace_event__tp_format("syscalls", tp_name);
aec1930b 1210
8dd2a131 1211 if (IS_ERR(sc->tp_format) && sc->fmt && sc->fmt->alias) {
aec1930b 1212 snprintf(tp_name, sizeof(tp_name), "sys_enter_%s", sc->fmt->alias);
97978b3e 1213 sc->tp_format = trace_event__tp_format("syscalls", tp_name);
aec1930b 1214 }
514f1c67 1215
8dd2a131 1216 if (IS_ERR(sc->tp_format))
13d4ff3e
ACM		 1217 return -1;
1218
f208bd8d
ACM		 1219 sc->args = sc->tp_format->format.fields;
1220 sc->nr_args = sc->tp_format->format.nr_fields;
c42de706
TS		 1221 /*
1222 * We need to check and discard the first variable '__syscall_nr'
1223 * or 'nr' that mean the syscall number. It is needless here.
1224 * So drop '__syscall_nr' or 'nr' field but does not exist on older kernels.
1225 */
1226 if (sc->args && (!strcmp(sc->args->name, "__syscall_nr") || !strcmp(sc->args->name, "nr"))) {
f208bd8d
ACM		 1227 sc->args = sc->args->next;
1228 --sc->nr_args;
1229 }
1230
5089f20e
ACM		 1231 sc->is_exit = !strcmp(name, "exit_group") || !strcmp(name, "exit");
1232
13d4ff3e 1233 return syscall__set_arg_fmts(sc);
514f1c67
ACM		 1234}
1235
d0cc439b
ACM		 1236static int trace__validate_ev_qualifier(struct trace *trace)
1237{
8b3ce757 1238 int err = 0, i;
d0cc439b
ACM		 1239 struct str_node *pos;
1240
8b3ce757
ACM		 1241 trace->ev_qualifier_ids.nr = strlist__nr_entries(trace->ev_qualifier);
1242 trace->ev_qualifier_ids.entries = malloc(trace->ev_qualifier_ids.nr *
1243 sizeof(trace->ev_qualifier_ids.entries[0]));
1244
1245 if (trace->ev_qualifier_ids.entries == NULL) {
1246 fputs("Error:\tNot enough memory for allocating events qualifier ids\n",
1247 trace->output);
1248 err = -EINVAL;
1249 goto out;
1250 }
1251
1252 i = 0;
1253
602a1f4d 1254 strlist__for_each_entry(pos, trace->ev_qualifier) {
d0cc439b 1255 const char *sc = pos->s;
fd0db102 1256 int id = syscalltbl__id(trace->sctbl, sc);
d0cc439b 1257
8b3ce757 1258 if (id < 0) {
d0cc439b
ACM		 1259 if (err == 0) {
1260 fputs("Error:\tInvalid syscall ", trace->output);
1261 err = -EINVAL;
1262 } else {
1263 fputs(", ", trace->output);
1264 }
1265
1266 fputs(sc, trace->output);
1267 }
8b3ce757
ACM		 1268
1269 trace->ev_qualifier_ids.entries[i++] = id;
d0cc439b
ACM		 1270 }
1271
1272 if (err < 0) {
1273 fputs("\nHint:\ttry 'perf list syscalls:sys_enter_*'"
1274 "\nHint:\tand: 'man syscalls'\n", trace->output);
8b3ce757
ACM		 1275 zfree(&trace->ev_qualifier_ids.entries);
1276 trace->ev_qualifier_ids.nr = 0;
d0cc439b 1277 }
8b3ce757 1278out:
d0cc439b
ACM		 1279 return err;
1280}
1281
55d43bca
DA		 1282/*
1283 * args is to be interpreted as a series of longs but we need to handle
1284 * 8-byte unaligned accesses. args points to raw_data within the event
1285 * and raw_data is guaranteed to be 8-byte unaligned because it is
1286 * preceded by raw_size which is a u32. So we need to copy args to a temp
1287 * variable to read it. Most notably this avoids extended load instructions
1288 * on unaligned addresses
1289 */
1290
752fde44 1291static size_t syscall__scnprintf_args(struct syscall *sc, char *bf, size_t size,
55d43bca 1292 unsigned char *args, struct trace *trace,
75b757ca 1293 struct thread *thread)
514f1c67 1294{
514f1c67 1295 size_t printed = 0;
55d43bca
DA		 1296 unsigned char *p;
1297 unsigned long val;
514f1c67 1298
f208bd8d 1299 if (sc->args != NULL) {
514f1c67 1300 struct format_field *field;
01533e97
ACM		 1301 u8 bit = 1;
1302 struct syscall_arg arg = {
75b757ca
ACM		 1303 .idx = 0,
1304 .mask = 0,
1305 .trace = trace,
1306 .thread = thread,
01533e97 1307 };
6e7eeb51 1308
f208bd8d 1309 for (field = sc->args; field;
01533e97
ACM		 1310 field = field->next, ++arg.idx, bit <<= 1) {
1311 if (arg.mask & bit)
6e7eeb51 1312 continue;
55d43bca
DA		 1313
1314 /* special care for unaligned accesses */
1315 p = args + sizeof(unsigned long) * arg.idx;
1316 memcpy(&val, p, sizeof(val));
1317
4aa58232
ACM		 1318 /*
1319 * Suppress this argument if its value is zero and
1320 * and we don't have a string associated in an
1321 * strarray for it.
1322 */
55d43bca 1323 if (val == 0 &&
4aa58232
ACM		 1324 !(sc->arg_scnprintf &&
1325 sc->arg_scnprintf[arg.idx] == SCA_STRARRAY &&
1326 sc->arg_parm[arg.idx]))
22ae5cf1
ACM		 1327 continue;
1328
752fde44 1329 printed += scnprintf(bf + printed, size - printed,
13d4ff3e 1330 "%s%s: ", printed ? ", " : "", field->name);
01533e97 1331 if (sc->arg_scnprintf && sc->arg_scnprintf[arg.idx]) {
55d43bca 1332 arg.val = val;
1f115cb7
ACM		 1333 if (sc->arg_parm)
1334 arg.parm = sc->arg_parm[arg.idx];
01533e97
ACM		 1335 printed += sc->arg_scnprintf[arg.idx](bf + printed,
1336 size - printed, &arg);
6e7eeb51 1337 } else {
13d4ff3e 1338 printed += scnprintf(bf + printed, size - printed,
55d43bca 1339 "%ld", val);
6e7eeb51 1340 }
514f1c67 1341 }
4c4d6e51
ACM		 1342 } else if (IS_ERR(sc->tp_format)) {
1343 /*
1344 * If we managed to read the tracepoint /format file, then we
1345 * may end up not having any args, like with gettid(), so only
1346 * print the raw args when we didn't manage to read it.
1347 */
01533e97
ACM		 1348 int i = 0;
1349
514f1c67 1350 while (i < 6) {
55d43bca
DA		 1351 /* special care for unaligned accesses */
1352 p = args + sizeof(unsigned long) * i;
1353 memcpy(&val, p, sizeof(val));
752fde44
ACM		 1354 printed += scnprintf(bf + printed, size - printed,
1355 "%sarg%d: %ld",
55d43bca 1356 printed ? ", " : "", i, val);
514f1c67
ACM		 1357 ++i;
1358 }
1359 }
1360
1361 return printed;
1362}
1363
ba3d7dee 1364typedef int (*tracepoint_handler)(struct trace *trace, struct perf_evsel *evsel,
0c82adcf 1365 union perf_event *event,
ba3d7dee
ACM		 1366 struct perf_sample *sample);
1367
1368static struct syscall *trace__syscall_info(struct trace *trace,
bf2575c1 1369 struct perf_evsel *evsel, int id)
ba3d7dee 1370{
ba3d7dee
ACM		 1371
1372 if (id < 0) {
adaa18bf
ACM		 1373
1374 /*
1375 * XXX: Noticed on x86_64, reproduced as far back as 3.0.36, haven't tried
1376 * before that, leaving at a higher verbosity level till that is
1377 * explained. Reproduced with plain ftrace with:
1378 *
1379 * echo 1 > /t/events/raw_syscalls/sys_exit/enable
1380 * grep "NR -1 " /t/trace_pipe
1381 *
1382 * After generating some load on the machine.
1383 */
1384 if (verbose > 1) {
1385 static u64 n;
1386 fprintf(trace->output, "Invalid syscall %d id, skipping (%s, %" PRIu64 ") ...\n",
1387 id, perf_evsel__name(evsel), ++n);
1388 }
ba3d7dee
ACM		 1389 return NULL;
1390 }
1391
1392 if ((id > trace->syscalls.max || trace->syscalls.table[id].name == NULL) &&
1393 trace__read_syscall_info(trace, id))
1394 goto out_cant_read;
1395
1396 if ((id > trace->syscalls.max || trace->syscalls.table[id].name == NULL))
1397 goto out_cant_read;
1398
1399 return &trace->syscalls.table[id];
1400
1401out_cant_read:
bb963e16 1402 if (verbose > 0) {
7c304ee0
ACM		 1403 fprintf(trace->output, "Problems reading syscall %d", id);
1404 if (id <= trace->syscalls.max && trace->syscalls.table[id].name != NULL)
1405 fprintf(trace->output, "(%s)", trace->syscalls.table[id].name);
1406 fputs(" information\n", trace->output);
1407 }
ba3d7dee
ACM		 1408 return NULL;
1409}
1410
bf2575c1
DA		 1411static void thread__update_stats(struct thread_trace *ttrace,
1412 int id, struct perf_sample *sample)
1413{
1414 struct int_node *inode;
1415 struct stats *stats;
1416 u64 duration = 0;
1417
1418 inode = intlist__findnew(ttrace->syscall_stats, id);
1419 if (inode == NULL)
1420 return;
1421
1422 stats = inode->priv;
1423 if (stats == NULL) {
1424 stats = malloc(sizeof(struct stats));
1425 if (stats == NULL)
1426 return;
1427 init_stats(stats);
1428 inode->priv = stats;
1429 }
1430
1431 if (ttrace->entry_time && sample->time > ttrace->entry_time)
1432 duration = sample->time - ttrace->entry_time;
1433
1434 update_stats(stats, duration);
1435}
1436
e596663e
ACM		 1437static int trace__printf_interrupted_entry(struct trace *trace, struct perf_sample *sample)
1438{
1439 struct thread_trace *ttrace;
1440 u64 duration;
1441 size_t printed;
1442
1443 if (trace->current == NULL)
1444 return 0;
1445
1446 ttrace = thread__priv(trace->current);
1447
1448 if (!ttrace->entry_pending)
1449 return 0;
1450
1451 duration = sample->time - ttrace->entry_time;
1452
ecf1e225 1453 printed = trace__fprintf_entry_head(trace, trace->current, duration, ttrace->entry_time, trace->output);
e596663e
ACM		 1454 printed += fprintf(trace->output, "%-70s) ...\n", ttrace->entry_str);
1455 ttrace->entry_pending = false;
1456
1457 return printed;
1458}
1459
ba3d7dee 1460static int trace__sys_enter(struct trace *trace, struct perf_evsel *evsel,
0c82adcf 1461 union perf_event *event __maybe_unused,
ba3d7dee
ACM		 1462 struct perf_sample *sample)
1463{
752fde44 1464 char *msg;
ba3d7dee 1465 void *args;
752fde44 1466 size_t printed = 0;
2ae3a312 1467 struct thread *thread;
b91fc39f 1468 int id = perf_evsel__sc_tp_uint(evsel, id, sample), err = -1;
bf2575c1 1469 struct syscall *sc = trace__syscall_info(trace, evsel, id);
2ae3a312
ACM		 1470 struct thread_trace *ttrace;
1471
1472 if (sc == NULL)
1473 return -1;
ba3d7dee 1474
8fb598e5 1475 thread = machine__findnew_thread(trace->host, sample->pid, sample->tid);
c24ff998 1476 ttrace = thread__trace(thread, trace->output);
2ae3a312 1477 if (ttrace == NULL)
b91fc39f 1478 goto out_put;
ba3d7dee 1479
77170988 1480 args = perf_evsel__sc_tp_ptr(evsel, args, sample);
752fde44
ACM		 1481
1482 if (ttrace->entry_str == NULL) {
e4d44e83 1483 ttrace->entry_str = malloc(trace__entry_str_size);
752fde44 1484 if (!ttrace->entry_str)
b91fc39f 1485 goto out_put;
752fde44
ACM		 1486 }
1487
5cf9c84e 1488 if (!(trace->duration_filter || trace->summary_only || trace->min_stack))
6ebad5c1 1489 trace__printf_interrupted_entry(trace, sample);
e596663e 1490
752fde44
ACM		 1491 ttrace->entry_time = sample->time;
1492 msg = ttrace->entry_str;
e4d44e83 1493 printed += scnprintf(msg + printed, trace__entry_str_size - printed, "%s(", sc->name);
752fde44 1494
e4d44e83 1495 printed += syscall__scnprintf_args(sc, msg + printed, trace__entry_str_size - printed,
75b757ca 1496 args, trace, thread);
752fde44 1497
5089f20e 1498 if (sc->is_exit) {
5cf9c84e 1499 if (!(trace->duration_filter || trace->summary_only || trace->min_stack)) {
ecf1e225 1500 trace__fprintf_entry_head(trace, thread, 1, ttrace->entry_time, trace->output);
c008f78f 1501 fprintf(trace->output, "%-70s)\n", ttrace->entry_str);
ae9ed035 1502 }
7f4f8001 1503 } else {
752fde44 1504 ttrace->entry_pending = true;
7f4f8001
ACM		 1505 /* See trace__vfs_getname & trace__sys_exit */
1506 ttrace->filename.pending_open = false;
1507 }
ba3d7dee 1508
f3b623b8
ACM		 1509 if (trace->current != thread) {
1510 thread__put(trace->current);
1511 trace->current = thread__get(thread);
1512 }
b91fc39f
ACM		 1513 err = 0;
1514out_put:
1515 thread__put(thread);
1516 return err;
ba3d7dee
ACM		 1517}
1518
5cf9c84e
ACM		 1519static int trace__resolve_callchain(struct trace *trace, struct perf_evsel *evsel,
1520 struct perf_sample *sample,
1521 struct callchain_cursor *cursor)
202ff968
ACM		 1522{
1523 struct addr_location al;
5cf9c84e
ACM		 1524
1525 if (machine__resolve(trace->host, &al, sample) < 0 ||
1526 thread__resolve_callchain(al.thread, cursor, evsel, sample, NULL, NULL, trace->max_stack))
1527 return -1;
1528
1529 return 0;
1530}
1531
1532static int trace__fprintf_callchain(struct trace *trace, struct perf_sample *sample)
1533{
202ff968 1534 /* TODO: user-configurable print_opts */
e20ab86e
ACM		 1535 const unsigned int print_opts = EVSEL__PRINT_SYM |
1536 EVSEL__PRINT_DSO |
1537 EVSEL__PRINT_UNKNOWN_AS_ADDR;
202ff968 1538
d327e60c 1539 return sample__fprintf_callchain(sample, 38, print_opts, &callchain_cursor, trace->output);
202ff968
ACM		 1540}
1541
ba3d7dee 1542static int trace__sys_exit(struct trace *trace, struct perf_evsel *evsel,
0c82adcf 1543 union perf_event *event __maybe_unused,
ba3d7dee
ACM		 1544 struct perf_sample *sample)
1545{
2c82c3ad 1546 long ret;
60c907ab 1547 u64 duration = 0;
2ae3a312 1548 struct thread *thread;
5cf9c84e 1549 int id = perf_evsel__sc_tp_uint(evsel, id, sample), err = -1, callchain_ret = 0;
bf2575c1 1550 struct syscall *sc = trace__syscall_info(trace, evsel, id);
2ae3a312
ACM		 1551 struct thread_trace *ttrace;
1552
1553 if (sc == NULL)
1554 return -1;
ba3d7dee 1555
8fb598e5 1556 thread = machine__findnew_thread(trace->host, sample->pid, sample->tid);
c24ff998 1557 ttrace = thread__trace(thread, trace->output);
2ae3a312 1558 if (ttrace == NULL)
b91fc39f 1559 goto out_put;
ba3d7dee 1560
bf2575c1
DA		 1561 if (trace->summary)
1562 thread__update_stats(ttrace, id, sample);
1563
77170988 1564 ret = perf_evsel__sc_tp_uint(evsel, ret, sample);
ba3d7dee 1565
fd0db102 1566 if (id == trace->open_id && ret >= 0 && ttrace->filename.pending_open) {
7f4f8001
ACM		 1567 trace__set_fd_pathname(thread, ret, ttrace->filename.name);
1568 ttrace->filename.pending_open = false;
c522739d
ACM		 1569 ++trace->stats.vfs_getname;
1570 }
1571
ae9ed035 1572 if (ttrace->entry_time) {
60c907ab 1573 duration = sample->time - ttrace->entry_time;
ae9ed035
ACM		 1574 if (trace__filter_duration(trace, duration))
1575 goto out;
1576 } else if (trace->duration_filter)
1577 goto out;
60c907ab 1578
5cf9c84e
ACM		 1579 if (sample->callchain) {
1580 callchain_ret = trace__resolve_callchain(trace, evsel, sample, &callchain_cursor);
1581 if (callchain_ret == 0) {
1582 if (callchain_cursor.nr < trace->min_stack)
1583 goto out;
1584 callchain_ret = 1;
1585 }
1586 }
1587
fd2eabaf
DA		 1588 if (trace->summary_only)
1589 goto out;
1590
ecf1e225 1591 trace__fprintf_entry_head(trace, thread, duration, ttrace->entry_time, trace->output);
752fde44
ACM		 1592
1593 if (ttrace->entry_pending) {
c24ff998 1594 fprintf(trace->output, "%-70s", ttrace->entry_str);
752fde44 1595 } else {
c24ff998
ACM		 1596 fprintf(trace->output, " ... [");
1597 color_fprintf(trace->output, PERF_COLOR_YELLOW, "continued");
1598 fprintf(trace->output, "]: %s()", sc->name);
752fde44
ACM		 1599 }
1600
da3c9a44
ACM		 1601 if (sc->fmt == NULL) {
1602signed_print:
2c82c3ad 1603 fprintf(trace->output, ") = %ld", ret);
11c8e39f 1604 } else if (ret < 0 && (sc->fmt->errmsg || sc->fmt->errpid)) {
942a91ed 1605 char bf[STRERR_BUFSIZE];
c8b5f2c9 1606 const char *emsg = str_error_r(-ret, bf, sizeof(bf)),
ba3d7dee
ACM		 1607 *e = audit_errno_to_name(-ret);
1608
c24ff998 1609 fprintf(trace->output, ") = -1 %s %s", e, emsg);
da3c9a44 1610 } else if (ret == 0 && sc->fmt->timeout)
c24ff998 1611 fprintf(trace->output, ") = 0 Timeout");
04b34729 1612 else if (sc->fmt->hexret)
2c82c3ad 1613 fprintf(trace->output, ") = %#lx", ret);
11c8e39f
ACM		 1614 else if (sc->fmt->errpid) {
1615 struct thread *child = machine__find_thread(trace->host, ret, ret);
1616
1617 if (child != NULL) {
1618 fprintf(trace->output, ") = %ld", ret);
1619 if (child->comm_set)
1620 fprintf(trace->output, " (%s)", thread__comm_str(child));
1621 thread__put(child);
1622 }
1623 } else
da3c9a44 1624 goto signed_print;
ba3d7dee 1625
c24ff998 1626 fputc('\n', trace->output);
566a0885 1627
5cf9c84e
ACM		 1628 if (callchain_ret > 0)
1629 trace__fprintf_callchain(trace, sample);
1630 else if (callchain_ret < 0)
1631 pr_err("Problem processing %s callchain, skipping...\n", perf_evsel__name(evsel));
ae9ed035 1632out:
752fde44 1633 ttrace->entry_pending = false;
b91fc39f
ACM		 1634 err = 0;
1635out_put:
1636 thread__put(thread);
1637 return err;
ba3d7dee
ACM		 1638}
1639
c522739d 1640static int trace__vfs_getname(struct trace *trace, struct perf_evsel *evsel,
0c82adcf 1641 union perf_event *event __maybe_unused,
c522739d
ACM		 1642 struct perf_sample *sample)
1643{
f994592d
ACM		 1644 struct thread *thread = machine__findnew_thread(trace->host, sample->pid, sample->tid);
1645 struct thread_trace *ttrace;
1646 size_t filename_len, entry_str_len, to_move;
1647 ssize_t remaining_space;
1648 char *pos;
7f4f8001 1649 const char *filename = perf_evsel__rawptr(evsel, sample, "pathname");
f994592d
ACM		 1650
1651 if (!thread)
1652 goto out;
1653
1654 ttrace = thread__priv(thread);
1655 if (!ttrace)
ef65e96e 1656 goto out_put;
f994592d 1657
7f4f8001 1658 filename_len = strlen(filename);
39f0e7a8 1659 if (filename_len == 0)
ef65e96e 1660 goto out_put;
7f4f8001
ACM		 1661
1662 if (ttrace->filename.namelen < filename_len) {
1663 char *f = realloc(ttrace->filename.name, filename_len + 1);
1664
1665 if (f == NULL)
ef65e96e 1666 goto out_put;
7f4f8001
ACM		 1667
1668 ttrace->filename.namelen = filename_len;
1669 ttrace->filename.name = f;
1670 }
1671
1672 strcpy(ttrace->filename.name, filename);
1673 ttrace->filename.pending_open = true;
1674
f994592d 1675 if (!ttrace->filename.ptr)
ef65e96e 1676 goto out_put;
f994592d
ACM		 1677
1678 entry_str_len = strlen(ttrace->entry_str);
1679 remaining_space = trace__entry_str_size - entry_str_len - 1; /* \0 */
1680 if (remaining_space <= 0)
ef65e96e 1681 goto out_put;
f994592d 1682
f994592d
ACM		 1683 if (filename_len > (size_t)remaining_space) {
1684 filename += filename_len - remaining_space;
1685 filename_len = remaining_space;
1686 }
1687
1688 to_move = entry_str_len - ttrace->filename.entry_str_pos + 1; /* \0 */
1689 pos = ttrace->entry_str + ttrace->filename.entry_str_pos;
1690 memmove(pos + filename_len, pos, to_move);
1691 memcpy(pos, filename, filename_len);
1692
1693 ttrace->filename.ptr = 0;
1694 ttrace->filename.entry_str_pos = 0;
ef65e96e
ACM		 1695out_put:
1696 thread__put(thread);
f994592d 1697out:
c522739d
ACM		 1698 return 0;
1699}
1700
1302d88e 1701static int trace__sched_stat_runtime(struct trace *trace, struct perf_evsel *evsel,
0c82adcf 1702 union perf_event *event __maybe_unused,
1302d88e
ACM		 1703 struct perf_sample *sample)
1704{
1705 u64 runtime = perf_evsel__intval(evsel, sample, "runtime");
1706 double runtime_ms = (double)runtime / NSEC_PER_MSEC;
8fb598e5 1707 struct thread *thread = machine__findnew_thread(trace->host,
314add6b
AH		 1708 sample->pid,
1709 sample->tid);
c24ff998 1710 struct thread_trace *ttrace = thread__trace(thread, trace->output);
1302d88e
ACM		 1711
1712 if (ttrace == NULL)
1713 goto out_dump;
1714
1715 ttrace->runtime_ms += runtime_ms;
1716 trace->runtime_ms += runtime_ms;
ef65e96e 1717out_put:
b91fc39f 1718 thread__put(thread);
1302d88e
ACM		 1719 return 0;
1720
1721out_dump:
c24ff998 1722 fprintf(trace->output, "%s: comm=%s,pid=%u,runtime=%" PRIu64 ",vruntime=%" PRIu64 ")\n",
1302d88e
ACM		 1723 evsel->name,
1724 perf_evsel__strval(evsel, sample, "comm"),
1725 (pid_t)perf_evsel__intval(evsel, sample, "pid"),
1726 runtime,
1727 perf_evsel__intval(evsel, sample, "vruntime"));
ef65e96e 1728 goto out_put;
1302d88e
ACM		 1729}
1730
1d6c9407
WN		 1731static void bpf_output__printer(enum binary_printer_ops op,
1732 unsigned int val, void *extra)
1733{
1734 FILE *output = extra;
1735 unsigned char ch = (unsigned char)val;
1736
1737 switch (op) {
1738 case BINARY_PRINT_CHAR_DATA:
1739 fprintf(output, "%c", isprint(ch) ? ch : '.');
1740 break;
1741 case BINARY_PRINT_DATA_BEGIN:
1742 case BINARY_PRINT_LINE_BEGIN:
1743 case BINARY_PRINT_ADDR:
1744 case BINARY_PRINT_NUM_DATA:
1745 case BINARY_PRINT_NUM_PAD:
1746 case BINARY_PRINT_SEP:
1747 case BINARY_PRINT_CHAR_PAD:
1748 case BINARY_PRINT_LINE_END:
1749 case BINARY_PRINT_DATA_END:
1750 default:
1751 break;
1752 }
1753}
1754
1755static void bpf_output__fprintf(struct trace *trace,
1756 struct perf_sample *sample)
1757{
1758 print_binary(sample->raw_data, sample->raw_size, 8,
1759 bpf_output__printer, trace->output);
1760}
1761
14a052df
ACM		 1762static int trace__event_handler(struct trace *trace, struct perf_evsel *evsel,
1763 union perf_event *event __maybe_unused,
1764 struct perf_sample *sample)
1765{
7ad35615
ACM		 1766 int callchain_ret = 0;
1767
1768 if (sample->callchain) {
1769 callchain_ret = trace__resolve_callchain(trace, evsel, sample, &callchain_cursor);
1770 if (callchain_ret == 0) {
1771 if (callchain_cursor.nr < trace->min_stack)
1772 goto out;
1773 callchain_ret = 1;
1774 }
1775 }
1776
14a052df
ACM		 1777 trace__printf_interrupted_entry(trace, sample);
1778 trace__fprintf_tstamp(trace, sample->time, trace->output);
0808921a
ACM		 1779
1780 if (trace->trace_syscalls)
1781 fprintf(trace->output, "( ): ");
1782
1783 fprintf(trace->output, "%s:", evsel->name);
14a052df 1784
1d6c9407
WN		 1785 if (perf_evsel__is_bpf_output(evsel)) {
1786 bpf_output__fprintf(trace, sample);
1787 } else if (evsel->tp_format) {
14a052df
ACM		 1788 event_format__fprintf(evsel->tp_format, sample->cpu,
1789 sample->raw_data, sample->raw_size,
1790 trace->output);
1791 }
1792
1793 fprintf(trace->output, ")\n");
202ff968 1794
7ad35615
ACM		 1795 if (callchain_ret > 0)
1796 trace__fprintf_callchain(trace, sample);
1797 else if (callchain_ret < 0)
1798 pr_err("Problem processing %s callchain, skipping...\n", perf_evsel__name(evsel));
1799out:
14a052df
ACM		 1800 return 0;
1801}
1802
598d02c5
SF		 1803static void print_location(FILE *f, struct perf_sample *sample,
1804 struct addr_location *al,
1805 bool print_dso, bool print_sym)
1806{
1807
bb963e16 1808 if ((verbose > 0 || print_dso) && al->map)
598d02c5
SF		 1809 fprintf(f, "%s@", al->map->dso->long_name);
1810
bb963e16 1811 if ((verbose > 0 || print_sym) && al->sym)
4414a3c5 1812 fprintf(f, "%s+0x%" PRIx64, al->sym->name,
598d02c5
SF		 1813 al->addr - al->sym->start);
1814 else if (al->map)
4414a3c5 1815 fprintf(f, "0x%" PRIx64, al->addr);
598d02c5 1816 else
4414a3c5 1817 fprintf(f, "0x%" PRIx64, sample->addr);
598d02c5
SF		 1818}
1819
1820static int trace__pgfault(struct trace *trace,
1821 struct perf_evsel *evsel,
473398a2 1822 union perf_event *event __maybe_unused,
598d02c5
SF		 1823 struct perf_sample *sample)
1824{
1825 struct thread *thread;
598d02c5
SF		 1826 struct addr_location al;
1827 char map_type = 'd';
a2ea67d7 1828 struct thread_trace *ttrace;
b91fc39f 1829 int err = -1;
1df54290 1830 int callchain_ret = 0;
598d02c5
SF		 1831
1832 thread = machine__findnew_thread(trace->host, sample->pid, sample->tid);
1df54290
ACM		 1833
1834 if (sample->callchain) {
1835 callchain_ret = trace__resolve_callchain(trace, evsel, sample, &callchain_cursor);
1836 if (callchain_ret == 0) {
1837 if (callchain_cursor.nr < trace->min_stack)
1838 goto out_put;
1839 callchain_ret = 1;
1840 }
1841 }
1842
a2ea67d7
SF		 1843 ttrace = thread__trace(thread, trace->output);
1844 if (ttrace == NULL)
b91fc39f 1845 goto out_put;
a2ea67d7
SF		 1846
1847 if (evsel->attr.config == PERF_COUNT_SW_PAGE_FAULTS_MAJ)
1848 ttrace->pfmaj++;
1849 else
1850 ttrace->pfmin++;
1851
1852 if (trace->summary_only)
b91fc39f 1853 goto out;
598d02c5 1854
473398a2 1855 thread__find_addr_location(thread, sample->cpumode, MAP__FUNCTION,
598d02c5
SF		 1856 sample->ip, &al);
1857
1858 trace__fprintf_entry_head(trace, thread, 0, sample->time, trace->output);
1859
1860 fprintf(trace->output, "%sfault [",
1861 evsel->attr.config == PERF_COUNT_SW_PAGE_FAULTS_MAJ ?
1862 "maj" : "min");
1863
1864 print_location(trace->output, sample, &al, false, true);
1865
1866 fprintf(trace->output, "] => ");
1867
473398a2 1868 thread__find_addr_location(thread, sample->cpumode, MAP__VARIABLE,
598d02c5
SF		 1869 sample->addr, &al);
1870
1871 if (!al.map) {
473398a2 1872 thread__find_addr_location(thread, sample->cpumode,
598d02c5
SF		 1873 MAP__FUNCTION, sample->addr, &al);
1874
1875 if (al.map)
1876 map_type = 'x';
1877 else
1878 map_type = '?';
1879 }
1880
1881 print_location(trace->output, sample, &al, true, false);
1882
1883 fprintf(trace->output, " (%c%c)\n", map_type, al.level);
0c3a6ef4 1884
1df54290
ACM		 1885 if (callchain_ret > 0)
1886 trace__fprintf_callchain(trace, sample);
1887 else if (callchain_ret < 0)
1888 pr_err("Problem processing %s callchain, skipping...\n", perf_evsel__name(evsel));
b91fc39f
ACM		 1889out:
1890 err = 0;
1891out_put:
1892 thread__put(thread);
1893 return err;
598d02c5
SF		 1894}
1895
e6001980 1896static void trace__set_base_time(struct trace *trace,
8a07a809 1897 struct perf_evsel *evsel,
e6001980
ACM		 1898 struct perf_sample *sample)
1899{
8a07a809
ACM		 1900 /*
1901 * BPF events were not setting PERF_SAMPLE_TIME, so be more robust
1902 * and don't use sample->time unconditionally, we may end up having
1903 * some other event in the future without PERF_SAMPLE_TIME for good
1904 * reason, i.e. we may not be interested in its timestamps, just in
1905 * it taking place, picking some piece of information when it
1906 * appears in our event stream (vfs_getname comes to mind).
1907 */
1908 if (trace->base_time == 0 && !trace->full_time &&
1909 (evsel->attr.sample_type & PERF_SAMPLE_TIME))
e6001980
ACM		 1910 trace->base_time = sample->time;
1911}
1912
6810fc91 1913static int trace__process_sample(struct perf_tool *tool,
0c82adcf 1914 union perf_event *event,
6810fc91
DA		 1915 struct perf_sample *sample,
1916 struct perf_evsel *evsel,
1917 struct machine *machine __maybe_unused)
1918{
1919 struct trace *trace = container_of(tool, struct trace, tool);
aa07df6e 1920 struct thread *thread;
6810fc91
DA		 1921 int err = 0;
1922
744a9719 1923 tracepoint_handler handler = evsel->handler;
6810fc91 1924
aa07df6e
DA		 1925 thread = machine__findnew_thread(trace->host, sample->pid, sample->tid);
1926 if (thread && thread__is_filtered(thread))
ef65e96e 1927 goto out;
bdc89661 1928
e6001980 1929 trace__set_base_time(trace, evsel, sample);
6810fc91 1930
3160565f
DA		 1931 if (handler) {
1932 ++trace->nr_events;
0c82adcf 1933 handler(trace, evsel, event, sample);
3160565f 1934 }
ef65e96e
ACM		 1935out:
1936 thread__put(thread);
6810fc91
DA		 1937 return err;
1938}
1939
1e28fe0a 1940static int trace__record(struct trace *trace, int argc, const char **argv)
5e2485b1
DA		 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",
5e2485b1
DA		 1949 };
1950
1e28fe0a
SF		 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
9aca7f17 1958 /* +1 is for the event string below */
1e28fe0a
SF		 1959 rec_argc = ARRAY_SIZE(record_args) + sc_args_nr + 1 +
1960 majpf_args_nr + minpf_args_nr + argc;
5e2485b1
DA		 1961 rec_argv = calloc(rec_argc + 1, sizeof(char *));
1962
1963 if (rec_argv == NULL)
1964 return -ENOMEM;
1965
1e28fe0a 1966 j = 0;
5e2485b1 1967 for (i = 0; i < ARRAY_SIZE(record_args); i++)
1e28fe0a
SF		 1968 rec_argv[j++] = record_args[i];
1969
e281a960
SF		 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 }
9aca7f17 1983 }
9aca7f17 1984
1e28fe0a
SF		 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];
5e2485b1 1995
b0ad8ea6 1996 return cmd_record(j, rec_argv);
5e2485b1
DA		 1997}
1998
bf2575c1
DA		 1999static size_t trace__fprintf_thread_summary(struct trace *trace, FILE *fp);
2000
08c98776 2001static bool perf_evlist__add_vfs_getname(struct perf_evlist *evlist)
c522739d 2002{
ef503831 2003 struct perf_evsel *evsel = perf_evsel__newtp("probe", "vfs_getname");
8dd2a131
JO		 2004
2005 if (IS_ERR(evsel))
08c98776 2006 return false;
c522739d
ACM		 2007
2008 if (perf_evsel__field(evsel, "pathname") == NULL) {
2009 perf_evsel__delete(evsel);
08c98776 2010 return false;
c522739d
ACM		 2011 }
2012
744a9719 2013 evsel->handler = trace__vfs_getname;
c522739d 2014 perf_evlist__add(evlist, evsel);
08c98776 2015 return true;
c522739d
ACM		 2016}
2017
0ae537cb 2018static struct perf_evsel *perf_evsel__new_pgfault(u64 config)
598d02c5
SF		 2019{
2020 struct perf_evsel *evsel;
2021 struct perf_event_attr attr = {
2022 .type = PERF_TYPE_SOFTWARE,
2023 .mmap_data = 1,
598d02c5
SF		 2024 };
2025
2026 attr.config = config;
0524798c 2027 attr.sample_period = 1;
598d02c5
SF		 2028
2029 event_attr_init(&attr);
2030
2031 evsel = perf_evsel__new(&attr);
0ae537cb
ACM		 2032 if (evsel)
2033 evsel->handler = trace__pgfault;
598d02c5 2034
0ae537cb 2035 return evsel;
598d02c5
SF		 2036}
2037
ddbb1b13
ACM		 2038static void trace__handle_event(struct trace *trace, union perf_event *event, struct perf_sample *sample)
2039{
2040 const u32 type = event->header.type;
2041 struct perf_evsel *evsel;
2042
ddbb1b13
ACM		 2043 if (type != PERF_RECORD_SAMPLE) {
2044 trace__process_event(trace, trace->host, event, sample);
2045 return;
2046 }
2047
2048 evsel = perf_evlist__id2evsel(trace->evlist, sample->id);
2049 if (evsel == NULL) {
2050 fprintf(trace->output, "Unknown tp ID %" PRIu64 ", skipping...\n", sample->id);
2051 return;
2052 }
2053
e6001980
ACM		 2054 trace__set_base_time(trace, evsel, sample);
2055
ddbb1b13
ACM		 2056 if (evsel->attr.type == PERF_TYPE_TRACEPOINT &&
2057 sample->raw_data == NULL) {
2058 fprintf(trace->output, "%s sample with no payload for tid: %d, cpu %d, raw_size=%d, skipping...\n",
2059 perf_evsel__name(evsel), sample->tid,
2060 sample->cpu, sample->raw_size);
2061 } else {
2062 tracepoint_handler handler = evsel->handler;
2063 handler(trace, evsel, event, sample);
2064 }
2065}
2066
c27366f0
ACM		 2067static int trace__add_syscall_newtp(struct trace *trace)
2068{
2069 int ret = -1;
2070 struct perf_evlist *evlist = trace->evlist;
2071 struct perf_evsel *sys_enter, *sys_exit;
2072
2073 sys_enter = perf_evsel__syscall_newtp("sys_enter", trace__sys_enter);
2074 if (sys_enter == NULL)
2075 goto out;
2076
2077 if (perf_evsel__init_sc_tp_ptr_field(sys_enter, args))
2078 goto out_delete_sys_enter;
2079
2080 sys_exit = perf_evsel__syscall_newtp("sys_exit", trace__sys_exit);
2081 if (sys_exit == NULL)
2082 goto out_delete_sys_enter;
2083
2084 if (perf_evsel__init_sc_tp_uint_field(sys_exit, ret))
2085 goto out_delete_sys_exit;
2086
2087 perf_evlist__add(evlist, sys_enter);
2088 perf_evlist__add(evlist, sys_exit);
2089
2ddd5c04 2090 if (callchain_param.enabled && !trace->kernel_syscallchains) {
44621819
ACM		 2091 /*
2092 * We're interested only in the user space callchain
2093 * leading to the syscall, allow overriding that for
2094 * debugging reasons using --kernel_syscall_callchains
2095 */
2096 sys_exit->attr.exclude_callchain_kernel = 1;
2097 }
2098
8b3ce757
ACM		 2099 trace->syscalls.events.sys_enter = sys_enter;
2100 trace->syscalls.events.sys_exit = sys_exit;
c27366f0
ACM		 2101
2102 ret = 0;
2103out:
2104 return ret;
2105
2106out_delete_sys_exit:
2107 perf_evsel__delete_priv(sys_exit);
2108out_delete_sys_enter:
2109 perf_evsel__delete_priv(sys_enter);
2110 goto out;
2111}
2112
19867b61
ACM		 2113static int trace__set_ev_qualifier_filter(struct trace *trace)
2114{
2115 int err = -1;
b15d0a4c 2116 struct perf_evsel *sys_exit;
19867b61
ACM		 2117 char *filter = asprintf_expr_inout_ints("id", !trace->not_ev_qualifier,
2118 trace->ev_qualifier_ids.nr,
2119 trace->ev_qualifier_ids.entries);
2120
2121 if (filter == NULL)
2122 goto out_enomem;
2123
3541c034
MP		 2124 if (!perf_evsel__append_tp_filter(trace->syscalls.events.sys_enter,
2125 filter)) {
b15d0a4c 2126 sys_exit = trace->syscalls.events.sys_exit;
3541c034 2127 err = perf_evsel__append_tp_filter(sys_exit, filter);
b15d0a4c 2128 }
19867b61
ACM		 2129
2130 free(filter);
2131out:
2132 return err;
2133out_enomem:
2134 errno = ENOMEM;
2135 goto out;
2136}
c27366f0 2137
f15eb531 2138static int trace__run(struct trace *trace, int argc, const char **argv)
514f1c67 2139{
14a052df 2140 struct perf_evlist *evlist = trace->evlist;
0ae537cb 2141 struct perf_evsel *evsel, *pgfault_maj = NULL, *pgfault_min = NULL;
efd5745e
ACM		 2142 int err = -1, i;
2143 unsigned long before;
f15eb531 2144 const bool forks = argc > 0;
46fb3c21 2145 bool draining = false;
514f1c67 2146
75b757ca
ACM		 2147 trace->live = true;
2148
c27366f0 2149 if (trace->trace_syscalls && trace__add_syscall_newtp(trace))
801c67b0 2150 goto out_error_raw_syscalls;
514f1c67 2151
e281a960 2152 if (trace->trace_syscalls)
08c98776 2153 trace->vfs_getname = perf_evlist__add_vfs_getname(evlist);
c522739d 2154
0ae537cb
ACM		 2155 if ((trace->trace_pgfaults & TRACE_PFMAJ)) {
2156 pgfault_maj = perf_evsel__new_pgfault(PERF_COUNT_SW_PAGE_FAULTS_MAJ);
2157 if (pgfault_maj == NULL)
2158 goto out_error_mem;
2159 perf_evlist__add(evlist, pgfault_maj);
e2726d99 2160 }
598d02c5 2161
0ae537cb
ACM		 2162 if ((trace->trace_pgfaults & TRACE_PFMIN)) {
2163 pgfault_min = perf_evsel__new_pgfault(PERF_COUNT_SW_PAGE_FAULTS_MIN);
2164 if (pgfault_min == NULL)
2165 goto out_error_mem;
2166 perf_evlist__add(evlist, pgfault_min);
2167 }
598d02c5 2168
1302d88e 2169 if (trace->sched &&
2cc990ba
ACM		 2170 perf_evlist__add_newtp(evlist, "sched", "sched_stat_runtime",
2171 trace__sched_stat_runtime))
2172 goto out_error_sched_stat_runtime;
1302d88e 2173
514f1c67
ACM		 2174 err = perf_evlist__create_maps(evlist, &trace->opts.target);
2175 if (err < 0) {
c24ff998 2176 fprintf(trace->output, "Problems parsing the target to trace, check your options!\n");
514f1c67
ACM		 2177 goto out_delete_evlist;
2178 }
2179
752fde44
ACM		 2180 err = trace__symbols_init(trace, evlist);
2181 if (err < 0) {
c24ff998 2182 fprintf(trace->output, "Problems initializing symbol libraries!\n");
03ad9747 2183 goto out_delete_evlist;
752fde44
ACM		 2184 }
2185
fde54b78
ACM		 2186 perf_evlist__config(evlist, &trace->opts, NULL);
2187
0c3a6ef4
ACM		 2188 if (callchain_param.enabled) {
2189 bool use_identifier = false;
2190
2191 if (trace->syscalls.events.sys_exit) {
2192 perf_evsel__config_callchain(trace->syscalls.events.sys_exit,
2193 &trace->opts, &callchain_param);
2194 use_identifier = true;
2195 }
2196
2197 if (pgfault_maj) {
2198 perf_evsel__config_callchain(pgfault_maj, &trace->opts, &callchain_param);
2199 use_identifier = true;
2200 }
2201
2202 if (pgfault_min) {
2203 perf_evsel__config_callchain(pgfault_min, &trace->opts, &callchain_param);
2204 use_identifier = true;
2205 }
2206
2207 if (use_identifier) {
2208 /*
2209 * Now we have evsels with different sample_ids, use
2210 * PERF_SAMPLE_IDENTIFIER to map from sample to evsel
2211 * from a fixed position in each ring buffer record.
2212 *
2213 * As of this the changeset introducing this comment, this
2214 * isn't strictly needed, as the fields that can come before
2215 * PERF_SAMPLE_ID are all used, but we'll probably disable
2216 * some of those for things like copying the payload of
2217 * pointer syscall arguments, and for vfs_getname we don't
2218 * need PERF_SAMPLE_ADDR and PERF_SAMPLE_IP, so do this
2219 * here as a warning we need to use PERF_SAMPLE_IDENTIFIER.
2220 */
2221 perf_evlist__set_sample_bit(evlist, IDENTIFIER);
2222 perf_evlist__reset_sample_bit(evlist, ID);
2223 }
fde54b78 2224 }
514f1c67 2225
f15eb531
NK		 2226 signal(SIGCHLD, sig_handler);
2227 signal(SIGINT, sig_handler);
2228
2229 if (forks) {
6ef73ec4 2230 err = perf_evlist__prepare_workload(evlist, &trace->opts.target,
735f7e0b 2231 argv, false, NULL);
f15eb531 2232 if (err < 0) {
c24ff998 2233 fprintf(trace->output, "Couldn't run the workload!\n");
03ad9747 2234 goto out_delete_evlist;
f15eb531
NK		 2235 }
2236 }
2237
514f1c67 2238 err = perf_evlist__open(evlist);
a8f23d8f
ACM		 2239 if (err < 0)
2240 goto out_error_open;
514f1c67 2241
ba504235
WN		 2242 err = bpf__apply_obj_config();
2243 if (err) {
2244 char errbuf[BUFSIZ];
2245
2246 bpf__strerror_apply_obj_config(err, errbuf, sizeof(errbuf));
2247 pr_err("ERROR: Apply config to BPF failed: %s\n",
2248 errbuf);
2249 goto out_error_open;
2250 }
2251
241b057c
ACM		 2252 /*
2253 * Better not use !target__has_task() here because we need to cover the
2254 * case where no threads were specified in the command line, but a
2255 * workload was, and in that case we will fill in the thread_map when
2256 * we fork the workload in perf_evlist__prepare_workload.
2257 */
f078c385
ACM		 2258 if (trace->filter_pids.nr > 0)
2259 err = perf_evlist__set_filter_pids(evlist, trace->filter_pids.nr, trace->filter_pids.entries);
e13798c7 2260 else if (thread_map__pid(evlist->threads, 0) == -1)
f078c385
ACM		 2261 err = perf_evlist__set_filter_pid(evlist, getpid());
2262
94ad89bc
ACM		 2263 if (err < 0)
2264 goto out_error_mem;
2265
19867b61
ACM		 2266 if (trace->ev_qualifier_ids.nr > 0) {
2267 err = trace__set_ev_qualifier_filter(trace);
2268 if (err < 0)
2269 goto out_errno;
19867b61 2270
2e5e5f87
ACM		 2271 pr_debug("event qualifier tracepoint filter: %s\n",
2272 trace->syscalls.events.sys_exit->filter);
2273 }
19867b61 2274
94ad89bc
ACM		 2275 err = perf_evlist__apply_filters(evlist, &evsel);
2276 if (err < 0)
2277 goto out_error_apply_filters;
241b057c 2278
f885037e 2279 err = perf_evlist__mmap(evlist, trace->opts.mmap_pages, false);
e09b18d4
ACM		 2280 if (err < 0)
2281 goto out_error_mmap;
514f1c67 2282
e36b7821 2283 if (!target__none(&trace->opts.target) && !trace->opts.initial_delay)
cb24d01d
ACM		 2284 perf_evlist__enable(evlist);
2285
f15eb531
NK		 2286 if (forks)
2287 perf_evlist__start_workload(evlist);
2288
e36b7821
AB		 2289 if (trace->opts.initial_delay) {
2290 usleep(trace->opts.initial_delay * 1000);
2291 perf_evlist__enable(evlist);
2292 }
2293
e13798c7 2294 trace->multiple_threads = thread_map__pid(evlist->threads, 0) == -1 ||
42052bea
ACM		 2295 evlist->threads->nr > 1 ||
2296 perf_evlist__first(evlist)->attr.inherit;
514f1c67 2297again:
efd5745e 2298 before = trace->nr_events;
514f1c67
ACM		 2299
2300 for (i = 0; i < evlist->nr_mmaps; i++) {
2301 union perf_event *event;
2302
2303 while ((event = perf_evlist__mmap_read(evlist, i)) != NULL) {
514f1c67 2304 struct perf_sample sample;
514f1c67 2305
efd5745e 2306 ++trace->nr_events;
514f1c67 2307
514f1c67
ACM		 2308 err = perf_evlist__parse_sample(evlist, event, &sample);
2309 if (err) {
c24ff998 2310 fprintf(trace->output, "Can't parse sample, err = %d, skipping...\n", err);
8e50d384 2311 goto next_event;
514f1c67
ACM		 2312 }
2313
ddbb1b13 2314 trace__handle_event(trace, event, &sample);
8e50d384
ZZ		 2315next_event:
2316 perf_evlist__mmap_consume(evlist, i);
20c5f10e 2317
ba209f85
ACM		 2318 if (interrupted)
2319 goto out_disable;
02ac5421
ACM		 2320
2321 if (done && !draining) {
2322 perf_evlist__disable(evlist);
2323 draining = true;
2324 }
514f1c67
ACM		 2325 }
2326 }
2327
efd5745e 2328 if (trace->nr_events == before) {
ba209f85 2329 int timeout = done ? 100 : -1;
f15eb531 2330
46fb3c21
ACM		 2331 if (!draining && perf_evlist__poll(evlist, timeout) > 0) {
2332 if (perf_evlist__filter_pollfd(evlist, POLLERR | POLLHUP) == 0)
2333 draining = true;
2334
ba209f85 2335 goto again;
46fb3c21 2336 }
ba209f85
ACM		 2337 } else {
2338 goto again;
f15eb531
NK		 2339 }
2340
ba209f85 2341out_disable:
f3b623b8
ACM		 2342 thread__zput(trace->current);
2343
ba209f85 2344 perf_evlist__disable(evlist);
514f1c67 2345
c522739d
ACM		 2346 if (!err) {
2347 if (trace->summary)
2348 trace__fprintf_thread_summary(trace, trace->output);
2349
2350 if (trace->show_tool_stats) {
2351 fprintf(trace->output, "Stats:\n "
2352 " vfs_getname : %" PRIu64 "\n"
2353 " proc_getname: %" PRIu64 "\n",
2354 trace->stats.vfs_getname,
2355 trace->stats.proc_getname);
2356 }
2357 }
bf2575c1 2358
514f1c67
ACM		 2359out_delete_evlist:
2360 perf_evlist__delete(evlist);
14a052df 2361 trace->evlist = NULL;
75b757ca 2362 trace->live = false;
514f1c67 2363 return err;
6ef068cb
ACM		 2364{
2365 char errbuf[BUFSIZ];
a8f23d8f 2366
2cc990ba 2367out_error_sched_stat_runtime:
988bdb31 2368 tracing_path__strerror_open_tp(errno, errbuf, sizeof(errbuf), "sched", "sched_stat_runtime");
2cc990ba
ACM		 2369 goto out_error;
2370
801c67b0 2371out_error_raw_syscalls:
988bdb31 2372 tracing_path__strerror_open_tp(errno, errbuf, sizeof(errbuf), "raw_syscalls", "sys_(enter|exit)");
a8f23d8f
ACM		 2373 goto out_error;
2374
e09b18d4
ACM		 2375out_error_mmap:
2376 perf_evlist__strerror_mmap(evlist, errno, errbuf, sizeof(errbuf));
2377 goto out_error;
2378
a8f23d8f
ACM		 2379out_error_open:
2380 perf_evlist__strerror_open(evlist, errno, errbuf, sizeof(errbuf));
2381
2382out_error:
6ef068cb 2383 fprintf(trace->output, "%s\n", errbuf);
87f91868 2384 goto out_delete_evlist;
94ad89bc
ACM		 2385
2386out_error_apply_filters:
2387 fprintf(trace->output,
2388 "Failed to set filter \"%s\" on event %s with %d (%s)\n",
2389 evsel->filter, perf_evsel__name(evsel), errno,
c8b5f2c9 2390 str_error_r(errno, errbuf, sizeof(errbuf)));
94ad89bc 2391 goto out_delete_evlist;
514f1c67 2392}
5ed08dae
ACM		 2393out_error_mem:
2394 fprintf(trace->output, "Not enough memory to run!\n");
2395 goto out_delete_evlist;
19867b61
ACM		 2396
2397out_errno:
2398 fprintf(trace->output, "errno=%d,%s\n", errno, strerror(errno));
2399 goto out_delete_evlist;
a8f23d8f 2400}
514f1c67 2401
6810fc91
DA		 2402static int trace__replay(struct trace *trace)
2403{
2404 const struct perf_evsel_str_handler handlers[] = {
c522739d 2405 { "probe:vfs_getname", trace__vfs_getname, },
6810fc91 2406 };
f5fc1412
JO		 2407 struct perf_data_file file = {
2408 .path = input_name,
2409 .mode = PERF_DATA_MODE_READ,
e366a6d8 2410 .force = trace->force,
f5fc1412 2411 };
6810fc91 2412 struct perf_session *session;
003824e8 2413 struct perf_evsel *evsel;
6810fc91
DA		 2414 int err = -1;
2415
2416 trace->tool.sample = trace__process_sample;
2417 trace->tool.mmap = perf_event__process_mmap;
384c671e 2418 trace->tool.mmap2 = perf_event__process_mmap2;
6810fc91
DA		 2419 trace->tool.comm = perf_event__process_comm;
2420 trace->tool.exit = perf_event__process_exit;
2421 trace->tool.fork = perf_event__process_fork;
2422 trace->tool.attr = perf_event__process_attr;
f3b3614a 2423 trace->tool.tracing_data = perf_event__process_tracing_data;
6810fc91 2424 trace->tool.build_id = perf_event__process_build_id;
f3b3614a 2425 trace->tool.namespaces = perf_event__process_namespaces;
6810fc91 2426
0a8cb85c 2427 trace->tool.ordered_events = true;
6810fc91
DA		 2428 trace->tool.ordering_requires_timestamps = true;
2429
2430 /* add tid to output */
2431 trace->multiple_threads = true;
2432
f5fc1412 2433 session = perf_session__new(&file, false, &trace->tool);
6810fc91 2434 if (session == NULL)
52e02834 2435 return -1;
6810fc91 2436
aa07df6e
DA		 2437 if (trace->opts.target.pid)
2438 symbol_conf.pid_list_str = strdup(trace->opts.target.pid);
2439
2440 if (trace->opts.target.tid)
2441 symbol_conf.tid_list_str = strdup(trace->opts.target.tid);
2442
0a7e6d1b 2443 if (symbol__init(&session->header.env) < 0)
cb2ffae2
NK		 2444 goto out;
2445
8fb598e5
DA		 2446 trace->host = &session->machines.host;
2447
6810fc91
DA		 2448 err = perf_session__set_tracepoints_handlers(session, handlers);
2449 if (err)
2450 goto out;
2451
003824e8
NK		 2452 evsel = perf_evlist__find_tracepoint_by_name(session->evlist,
2453 "raw_syscalls:sys_enter");
9aca7f17
DA		 2454 /* older kernels have syscalls tp versus raw_syscalls */
2455 if (evsel == NULL)
2456 evsel = perf_evlist__find_tracepoint_by_name(session->evlist,
2457 "syscalls:sys_enter");
003824e8 2458
e281a960
SF		 2459 if (evsel &&
2460 (perf_evsel__init_syscall_tp(evsel, trace__sys_enter) < 0 ||
2461 perf_evsel__init_sc_tp_ptr_field(evsel, args))) {
003824e8
NK		 2462 pr_err("Error during initialize raw_syscalls:sys_enter event\n");
2463 goto out;
2464 }
2465
2466 evsel = perf_evlist__find_tracepoint_by_name(session->evlist,
2467 "raw_syscalls:sys_exit");
9aca7f17
DA		 2468 if (evsel == NULL)
2469 evsel = perf_evlist__find_tracepoint_by_name(session->evlist,
2470 "syscalls:sys_exit");
e281a960
SF		 2471 if (evsel &&
2472 (perf_evsel__init_syscall_tp(evsel, trace__sys_exit) < 0 ||
2473 perf_evsel__init_sc_tp_uint_field(evsel, ret))) {
003824e8 2474 pr_err("Error during initialize raw_syscalls:sys_exit event\n");
6810fc91
DA		 2475 goto out;
2476 }
2477
e5cadb93 2478 evlist__for_each_entry(session->evlist, evsel) {
1e28fe0a
SF		 2479 if (evsel->attr.type == PERF_TYPE_SOFTWARE &&
2480 (evsel->attr.config == PERF_COUNT_SW_PAGE_FAULTS_MAJ ||
2481 evsel->attr.config == PERF_COUNT_SW_PAGE_FAULTS_MIN ||
2482 evsel->attr.config == PERF_COUNT_SW_PAGE_FAULTS))
2483 evsel->handler = trace__pgfault;
2484 }
2485
6810fc91
DA		 2486 setup_pager();
2487
b7b61cbe 2488 err = perf_session__process_events(session);
6810fc91
DA		 2489 if (err)
2490 pr_err("Failed to process events, error %d", err);
2491
bf2575c1
DA		 2492 else if (trace->summary)
2493 trace__fprintf_thread_summary(trace, trace->output);
2494
6810fc91
DA		 2495out:
2496 perf_session__delete(session);
2497
2498 return err;
2499}
2500
1302d88e
ACM		 2501static size_t trace__fprintf_threads_header(FILE *fp)
2502{
2503 size_t printed;
2504
99ff7150 2505 printed = fprintf(fp, "\n Summary of events:\n\n");
bf2575c1
DA		 2506
2507 return printed;
2508}
2509
b535d523
ACM		 2510DEFINE_RESORT_RB(syscall_stats, a->msecs > b->msecs,
2511 struct stats *stats;
2512 double msecs;
2513 int syscall;
2514)
2515{
2516 struct int_node *source = rb_entry(nd, struct int_node, rb_node);
2517 struct stats *stats = source->priv;
2518
2519 entry->syscall = source->i;
2520 entry->stats = stats;
2521 entry->msecs = stats ? (u64)stats->n * (avg_stats(stats) / NSEC_PER_MSEC) : 0;
2522}
2523
bf2575c1
DA		 2524static size_t thread__dump_stats(struct thread_trace *ttrace,
2525 struct trace *trace, FILE *fp)
2526{
bf2575c1
DA		 2527 size_t printed = 0;
2528 struct syscall *sc;
b535d523
ACM		 2529 struct rb_node *nd;
2530 DECLARE_RESORT_RB_INTLIST(syscall_stats, ttrace->syscall_stats);
bf2575c1 2531
b535d523 2532 if (syscall_stats == NULL)
bf2575c1
DA		 2533 return 0;
2534
2535 printed += fprintf(fp, "\n");
2536
834fd46d
MW		 2537 printed += fprintf(fp, " syscall calls total min avg max stddev\n");
2538 printed += fprintf(fp, " (msec) (msec) (msec) (msec) (%%)\n");
2539 printed += fprintf(fp, " --------------- -------- --------- --------- --------- --------- ------\n");
99ff7150 2540
98a91837 2541 resort_rb__for_each_entry(nd, syscall_stats) {
b535d523 2542 struct stats *stats = syscall_stats_entry->stats;
bf2575c1
DA		 2543 if (stats) {
2544 double min = (double)(stats->min) / NSEC_PER_MSEC;
2545 double max = (double)(stats->max) / NSEC_PER_MSEC;
2546 double avg = avg_stats(stats);
2547 double pct;
2548 u64 n = (u64) stats->n;
2549
2550 pct = avg ? 100.0 * stddev_stats(stats)/avg : 0.0;
2551 avg /= NSEC_PER_MSEC;
2552
b535d523 2553 sc = &trace->syscalls.table[syscall_stats_entry->syscall];
99ff7150 2554 printed += fprintf(fp, " %-15s", sc->name);
834fd46d 2555 printed += fprintf(fp, " %8" PRIu64 " %9.3f %9.3f %9.3f",
b535d523 2556 n, syscall_stats_entry->msecs, min, avg);
27a778b5 2557 printed += fprintf(fp, " %9.3f %9.2f%%\n", max, pct);
bf2575c1 2558 }
bf2575c1
DA		 2559 }
2560
b535d523 2561 resort_rb__delete(syscall_stats);
bf2575c1 2562 printed += fprintf(fp, "\n\n");
1302d88e
ACM		 2563
2564 return printed;
2565}
2566
96c14451 2567static size_t trace__fprintf_thread(FILE *fp, struct thread *thread, struct trace *trace)
896cbb56 2568{
96c14451 2569 size_t printed = 0;
89dceb22 2570 struct thread_trace *ttrace = thread__priv(thread);
896cbb56
DA		 2571 double ratio;
2572
2573 if (ttrace == NULL)
2574 return 0;
2575
2576 ratio = (double)ttrace->nr_events / trace->nr_events * 100.0;
2577
15e65c69 2578 printed += fprintf(fp, " %s (%d), ", thread__comm_str(thread), thread->tid);
99ff7150 2579 printed += fprintf(fp, "%lu events, ", ttrace->nr_events);
15e65c69 2580 printed += fprintf(fp, "%.1f%%", ratio);
a2ea67d7
SF		 2581 if (ttrace->pfmaj)
2582 printed += fprintf(fp, ", %lu majfaults", ttrace->pfmaj);
2583 if (ttrace->pfmin)
2584 printed += fprintf(fp, ", %lu minfaults", ttrace->pfmin);
03548ebf
ACM		 2585 if (trace->sched)
2586 printed += fprintf(fp, ", %.3f msec\n", ttrace->runtime_ms);
2587 else if (fputc('\n', fp) != EOF)
2588 ++printed;
2589
bf2575c1 2590 printed += thread__dump_stats(ttrace, trace, fp);
896cbb56 2591
96c14451
ACM		 2592 return printed;
2593}
896cbb56 2594
96c14451
ACM		 2595static unsigned long thread__nr_events(struct thread_trace *ttrace)
2596{
2597 return ttrace ? ttrace->nr_events : 0;
2598}
2599
2600DEFINE_RESORT_RB(threads, (thread__nr_events(a->thread->priv) < thread__nr_events(b->thread->priv)),
2601 struct thread *thread;
2602)
2603{
2604 entry->thread = rb_entry(nd, struct thread, rb_node);
896cbb56
DA		 2605}
2606
1302d88e
ACM		 2607static size_t trace__fprintf_thread_summary(struct trace *trace, FILE *fp)
2608{
96c14451
ACM		 2609 DECLARE_RESORT_RB_MACHINE_THREADS(threads, trace->host);
2610 size_t printed = trace__fprintf_threads_header(fp);
2611 struct rb_node *nd;
1302d88e 2612
96c14451
ACM		 2613 if (threads == NULL) {
2614 fprintf(fp, "%s", "Error sorting output by nr_events!\n");
2615 return 0;
2616 }
2617
98a91837 2618 resort_rb__for_each_entry(nd, threads)
96c14451 2619 printed += trace__fprintf_thread(fp, threads_entry->thread, trace);
896cbb56 2620
96c14451
ACM		 2621 resort_rb__delete(threads);
2622
2623 return printed;
1302d88e
ACM		 2624}
2625
ae9ed035
ACM		 2626static int trace__set_duration(const struct option *opt, const char *str,
2627 int unset __maybe_unused)
2628{
2629 struct trace *trace = opt->value;
2630
2631 trace->duration_filter = atof(str);
2632 return 0;
2633}
2634
f078c385
ACM		 2635static int trace__set_filter_pids(const struct option *opt, const char *str,
2636 int unset __maybe_unused)
2637{
2638 int ret = -1;
2639 size_t i;
2640 struct trace *trace = opt->value;
2641 /*
2642 * FIXME: introduce a intarray class, plain parse csv and create a
2643 * { int nr, int entries[] } struct...
2644 */
2645 struct intlist *list = intlist__new(str);
2646
2647 if (list == NULL)
2648 return -1;
2649
2650 i = trace->filter_pids.nr = intlist__nr_entries(list) + 1;
2651 trace->filter_pids.entries = calloc(i, sizeof(pid_t));
2652
2653 if (trace->filter_pids.entries == NULL)
2654 goto out;
2655
2656 trace->filter_pids.entries[0] = getpid();
2657
2658 for (i = 1; i < trace->filter_pids.nr; ++i)
2659 trace->filter_pids.entries[i] = intlist__entry(list, i - 1)->i;
2660
2661 intlist__delete(list);
2662 ret = 0;
2663out:
2664 return ret;
2665}
2666
c24ff998
ACM		 2667static int trace__open_output(struct trace *trace, const char *filename)
2668{
2669 struct stat st;
2670
2671 if (!stat(filename, &st) && st.st_size) {
2672 char oldname[PATH_MAX];
2673
2674 scnprintf(oldname, sizeof(oldname), "%s.old", filename);
2675 unlink(oldname);
2676 rename(filename, oldname);
2677 }
2678
2679 trace->output = fopen(filename, "w");
2680
2681 return trace->output == NULL ? -errno : 0;
2682}
2683
598d02c5
SF		 2684static int parse_pagefaults(const struct option *opt, const char *str,
2685 int unset __maybe_unused)
2686{
2687 int *trace_pgfaults = opt->value;
2688
2689 if (strcmp(str, "all") == 0)
2690 *trace_pgfaults |= TRACE_PFMAJ | TRACE_PFMIN;
2691 else if (strcmp(str, "maj") == 0)
2692 *trace_pgfaults |= TRACE_PFMAJ;
2693 else if (strcmp(str, "min") == 0)
2694 *trace_pgfaults |= TRACE_PFMIN;
2695 else
2696 return -1;
2697
2698 return 0;
2699}
2700
14a052df
ACM		 2701static void evlist__set_evsel_handler(struct perf_evlist *evlist, void *handler)
2702{
2703 struct perf_evsel *evsel;
2704
e5cadb93 2705 evlist__for_each_entry(evlist, evsel)
14a052df
ACM		 2706 evsel->handler = handler;
2707}
2708
017037ff
ACM		 2709/*
2710 * XXX: Hackish, just splitting the combined -e+--event (syscalls
2711 * (raw_syscalls:{sys_{enter,exit}} + events (tracepoints, HW, SW, etc) to use
2712 * existing facilities unchanged (trace->ev_qualifier + parse_options()).
2713 *
2714 * It'd be better to introduce a parse_options() variant that would return a
2715 * list with the terms it didn't match to an event...
2716 */
2717static int trace__parse_events_option(const struct option *opt, const char *str,
2718 int unset __maybe_unused)
2719{
2720 struct trace *trace = (struct trace *)opt->value;
2721 const char *s = str;
2722 char *sep = NULL, *lists[2] = { NULL, NULL, };
2723 int len = strlen(str), err = -1, list;
2724 char *strace_groups_dir = system_path(STRACE_GROUPS_DIR);
2725 char group_name[PATH_MAX];
2726
2727 if (strace_groups_dir == NULL)
2728 return -1;
2729
2730 if (*s == '!') {
2731 ++s;
2732 trace->not_ev_qualifier = true;
2733 }
2734
2735 while (1) {
2736 if ((sep = strchr(s, ',')) != NULL)
2737 *sep = '\0';
2738
2739 list = 0;
2740 if (syscalltbl__id(trace->sctbl, s) >= 0) {
2741 list = 1;
2742 } else {
2743 path__join(group_name, sizeof(group_name), strace_groups_dir, s);
2744 if (access(group_name, R_OK) == 0)
2745 list = 1;
2746 }
2747
2748 if (lists[list]) {
2749 sprintf(lists[list] + strlen(lists[list]), ",%s", s);
2750 } else {
2751 lists[list] = malloc(len);
2752 if (lists[list] == NULL)
2753 goto out;
2754 strcpy(lists[list], s);
2755 }
2756
2757 if (!sep)
2758 break;
2759
2760 *sep = ',';
2761 s = sep + 1;
2762 }
2763
2764 if (lists[1] != NULL) {
2765 struct strlist_config slist_config = {
2766 .dirname = strace_groups_dir,
2767 };
2768
2769 trace->ev_qualifier = strlist__new(lists[1], &slist_config);
2770 if (trace->ev_qualifier == NULL) {
2771 fputs("Not enough memory to parse event qualifier", trace->output);
2772 goto out;
2773 }
2774
2775 if (trace__validate_ev_qualifier(trace))
2776 goto out;
2777 }
2778
2779 err = 0;
2780
2781 if (lists[0]) {
2782 struct option o = OPT_CALLBACK('e', "event", &trace->evlist, "event",
2783 "event selector. use 'perf list' to list available events",
2784 parse_events_option);
2785 err = parse_events_option(&o, lists[0], 0);
2786 }
2787out:
2788 if (sep)
2789 *sep = ',';
2790
2791 return err;
2792}
2793
b0ad8ea6 2794int cmd_trace(int argc, const char **argv)
514f1c67 2795{
6fdd9cb7 2796 const char *trace_usage[] = {
f15eb531
NK		 2797 "perf trace [<options>] [<command>]",
2798 "perf trace [<options>] -- <command> [<options>]",
5e2485b1
DA		 2799 "perf trace record [<options>] [<command>]",
2800 "perf trace record [<options>] -- <command> [<options>]",
514f1c67
ACM		 2801 NULL
2802 };
2803 struct trace trace = {
514f1c67
ACM		 2804 .syscalls = {
2805 . max = -1,
2806 },
2807 .opts = {
2808 .target = {
2809 .uid = UINT_MAX,
2810 .uses_mmap = true,
2811 },
2812 .user_freq = UINT_MAX,
2813 .user_interval = ULLONG_MAX,
509051ea 2814 .no_buffering = true,
38d5447d 2815 .mmap_pages = UINT_MAX,
9d9cad76 2816 .proc_map_timeout = 500,
514f1c67 2817 },
007d66a0 2818 .output = stderr,
50c95cbd 2819 .show_comm = true,
e281a960 2820 .trace_syscalls = true,
44621819 2821 .kernel_syscallchains = false,
05614993 2822 .max_stack = UINT_MAX,
514f1c67 2823 };
c24ff998 2824 const char *output_name = NULL;
514f1c67 2825 const struct option trace_options[] = {
017037ff
ACM		 2826 OPT_CALLBACK('e', "event", &trace, "event",
2827 "event/syscall selector. use 'perf list' to list available events",
2828 trace__parse_events_option),
50c95cbd
ACM		 2829 OPT_BOOLEAN(0, "comm", &trace.show_comm,
2830 "show the thread COMM next to its id"),
c522739d 2831 OPT_BOOLEAN(0, "tool_stats", &trace.show_tool_stats, "show tool stats"),
017037ff
ACM		 2832 OPT_CALLBACK(0, "expr", &trace, "expr", "list of syscalls/events to trace",
2833 trace__parse_events_option),
c24ff998 2834 OPT_STRING('o', "output", &output_name, "file", "output file name"),
6810fc91 2835 OPT_STRING('i', "input", &input_name, "file", "Analyze events in file"),
514f1c67
ACM		 2836 OPT_STRING('p', "pid", &trace.opts.target.pid, "pid",
2837 "trace events on existing process id"),
ac9be8ee 2838 OPT_STRING('t', "tid", &trace.opts.target.tid, "tid",
514f1c67 2839 "trace events on existing thread id"),
fa0e4ffe
ACM		 2840 OPT_CALLBACK(0, "filter-pids", &trace, "CSV list of pids",
2841 "pids to filter (by the kernel)", trace__set_filter_pids),
ac9be8ee 2842 OPT_BOOLEAN('a', "all-cpus", &trace.opts.target.system_wide,
514f1c67 2843 "system-wide collection from all CPUs"),
ac9be8ee 2844 OPT_STRING('C', "cpu", &trace.opts.target.cpu_list, "cpu",
514f1c67 2845 "list of cpus to monitor"),
6810fc91 2846 OPT_BOOLEAN(0, "no-inherit", &trace.opts.no_inherit,
514f1c67 2847 "child tasks do not inherit counters"),
994a1f78
JO		 2848 OPT_CALLBACK('m', "mmap-pages", &trace.opts.mmap_pages, "pages",
2849 "number of mmap data pages",
2850 perf_evlist__parse_mmap_pages),
ac9be8ee 2851 OPT_STRING('u', "uid", &trace.opts.target.uid_str, "user",
514f1c67 2852 "user to profile"),
ae9ed035
ACM		 2853 OPT_CALLBACK(0, "duration", &trace, "float",
2854 "show only events with duration > N.M ms",
2855 trace__set_duration),
1302d88e 2856 OPT_BOOLEAN(0, "sched", &trace.sched, "show blocking scheduler events"),
7c304ee0 2857 OPT_INCR('v', "verbose", &verbose, "be more verbose"),
4bb09192
DA		 2858 OPT_BOOLEAN('T', "time", &trace.full_time,
2859 "Show full timestamp, not time relative to first start"),
fd2eabaf
DA		 2860 OPT_BOOLEAN('s', "summary", &trace.summary_only,
2861 "Show only syscall summary with statistics"),
2862 OPT_BOOLEAN('S', "with-summary", &trace.summary,
2863 "Show all syscalls and summary with statistics"),
598d02c5
SF		 2864 OPT_CALLBACK_DEFAULT('F', "pf", &trace.trace_pgfaults, "all|maj|min",
2865 "Trace pagefaults", parse_pagefaults, "maj"),
e281a960 2866 OPT_BOOLEAN(0, "syscalls", &trace.trace_syscalls, "Trace syscalls"),
e366a6d8 2867 OPT_BOOLEAN('f', "force", &trace.force, "don't complain, do it"),
566a0885
MW		 2868 OPT_CALLBACK(0, "call-graph", &trace.opts,
2869 "record_mode[,record_size]", record_callchain_help,
2870 &record_parse_callchain_opt),
44621819
ACM		 2871 OPT_BOOLEAN(0, "kernel-syscall-graph", &trace.kernel_syscallchains,
2872 "Show the kernel callchains on the syscall exit path"),
5cf9c84e
ACM		 2873 OPT_UINTEGER(0, "min-stack", &trace.min_stack,
2874 "Set the minimum stack depth when parsing the callchain, "
2875 "anything below the specified depth will be ignored."),
c6d4a494
ACM		 2876 OPT_UINTEGER(0, "max-stack", &trace.max_stack,
2877 "Set the maximum stack depth when parsing the callchain, "
2878 "anything beyond the specified depth will be ignored. "
4cb93446 2879 "Default: kernel.perf_event_max_stack or " __stringify(PERF_MAX_STACK_DEPTH)),
9d9cad76
KL		 2880 OPT_UINTEGER(0, "proc-map-timeout", &trace.opts.proc_map_timeout,
2881 "per thread proc mmap processing timeout in ms"),
e36b7821
AB		 2882 OPT_UINTEGER('D', "delay", &trace.opts.initial_delay,
2883 "ms to wait before starting measurement after program "
2884 "start"),
514f1c67
ACM		 2885 OPT_END()
2886 };
ccd62a89 2887 bool __maybe_unused max_stack_user_set = true;
f3e459d1 2888 bool mmap_pages_user_set = true;
6fdd9cb7 2889 const char * const trace_subcommands[] = { "record", NULL };
514f1c67 2890 int err;
32caf0d1 2891 char bf[BUFSIZ];
514f1c67 2892
4d08cb80
ACM		 2893 signal(SIGSEGV, sighandler_dump_stack);
2894 signal(SIGFPE, sighandler_dump_stack);
2895
14a052df 2896 trace.evlist = perf_evlist__new();
fd0db102 2897 trace.sctbl = syscalltbl__new();
14a052df 2898
fd0db102 2899 if (trace.evlist == NULL || trace.sctbl == NULL) {
14a052df 2900 pr_err("Not enough memory to run!\n");
ff8f695c 2901 err = -ENOMEM;
14a052df
ACM		 2902 goto out;
2903 }
2904
6fdd9cb7
YS		 2905 argc = parse_options_subcommand(argc, argv, trace_options, trace_subcommands,
2906 trace_usage, PARSE_OPT_STOP_AT_NON_OPTION);
fd2eabaf 2907
d7888573
WN		 2908 err = bpf__setup_stdout(trace.evlist);
2909 if (err) {
2910 bpf__strerror_setup_stdout(trace.evlist, err, bf, sizeof(bf));
2911 pr_err("ERROR: Setup BPF stdout failed: %s\n", bf);
2912 goto out;
2913 }
2914
59247e33
ACM		 2915 err = -1;
2916
598d02c5
SF		 2917 if (trace.trace_pgfaults) {
2918 trace.opts.sample_address = true;
2919 trace.opts.sample_time = true;
2920 }
2921
f3e459d1
ACM		 2922 if (trace.opts.mmap_pages == UINT_MAX)
2923 mmap_pages_user_set = false;
2924
05614993 2925 if (trace.max_stack == UINT_MAX) {
fe176085 2926 trace.max_stack = input_name ? PERF_MAX_STACK_DEPTH : sysctl_perf_event_max_stack;
05614993
ACM		 2927 max_stack_user_set = false;
2928 }
2929
2930#ifdef HAVE_DWARF_UNWIND_SUPPORT
caa36ed7 2931 if ((trace.min_stack || max_stack_user_set) && !callchain_param.enabled && trace.trace_syscalls)
05614993
ACM		 2932 record_opts__parse_callchain(&trace.opts, &callchain_param, "dwarf", false);
2933#endif
2934
2ddd5c04 2935 if (callchain_param.enabled) {
f3e459d1
ACM		 2936 if (!mmap_pages_user_set && geteuid() == 0)
2937 trace.opts.mmap_pages = perf_event_mlock_kb_in_pages() * 4;
2938
566a0885 2939 symbol_conf.use_callchain = true;
f3e459d1 2940 }
566a0885 2941
14a052df
ACM		 2942 if (trace.evlist->nr_entries > 0)
2943 evlist__set_evsel_handler(trace.evlist, trace__event_handler);
2944
1e28fe0a
SF		 2945 if ((argc >= 1) && (strcmp(argv[0], "record") == 0))
2946 return trace__record(&trace, argc-1, &argv[1]);
2947
2948 /* summary_only implies summary option, but don't overwrite summary if set */
2949 if (trace.summary_only)
2950 trace.summary = trace.summary_only;
2951
726f3234
ACM		 2952 if (!trace.trace_syscalls && !trace.trace_pgfaults &&
2953 trace.evlist->nr_entries == 0 /* Was --events used? */) {
e281a960
SF		 2954 pr_err("Please specify something to trace.\n");
2955 return -1;
2956 }
2957
017037ff 2958 if (!trace.trace_syscalls && trace.ev_qualifier) {
59247e33
ACM		 2959 pr_err("The -e option can't be used with --no-syscalls.\n");
2960 goto out;
2961 }
2962
c24ff998
ACM		 2963 if (output_name != NULL) {
2964 err = trace__open_output(&trace, output_name);
2965 if (err < 0) {
2966 perror("failed to create output file");
2967 goto out;
2968 }
2969 }
2970
fd0db102
ACM		 2971 trace.open_id = syscalltbl__id(trace.sctbl, "open");
2972
602ad878 2973 err = target__validate(&trace.opts.target);
32caf0d1 2974 if (err) {
602ad878 2975 target__strerror(&trace.opts.target, err, bf, sizeof(bf));
c24ff998
ACM		 2976 fprintf(trace.output, "%s", bf);
2977 goto out_close;
32caf0d1
NK		 2978 }
2979
602ad878 2980 err = target__parse_uid(&trace.opts.target);
514f1c67 2981 if (err) {
602ad878 2982 target__strerror(&trace.opts.target, err, bf, sizeof(bf));
c24ff998
ACM		 2983 fprintf(trace.output, "%s", bf);
2984 goto out_close;
514f1c67
ACM		 2985 }
2986
602ad878 2987 if (!argc && target__none(&trace.opts.target))
ee76120e
NK		 2988 trace.opts.target.system_wide = true;
2989
6810fc91
DA		 2990 if (input_name)
2991 err = trace__replay(&trace);
2992 else
2993 err = trace__run(&trace, argc, argv);
1302d88e 2994
c24ff998
ACM		 2995out_close:
2996 if (output_name != NULL)
2997 fclose(trace.output);
2998out:
1302d88e 2999 return err;
514f1c67 3000}
Ubuntu Artful kernel mirror