projects / linux-2.6-block.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
perf c2c: Change the default coalesce setup
[linux-2.6-block.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>
744fafc7 21#include <bpf/bpf.h>
514f1c67 22#include "builtin.h"
9ea42ba4 23#include "util/cgroup.h"
752fde44 24#include "util/color.h"
ac96287c 25#include "util/config.h"
7c304ee0 26#include "util/debug.h"
092bd3cd 27#include "util/env.h"
5ab8c689 28#include "util/event.h"
514f1c67 29#include "util/evlist.h"
4b6ab94e 30#include <subcmd/exec-cmd.h>
752fde44 31#include "util/machine.h"
9a3993d4 32#include "util/path.h"
6810fc91 33#include "util/session.h"
752fde44 34#include "util/thread.h"
4b6ab94e 35#include <subcmd/parse-options.h>
2ae3a312 36#include "util/strlist.h"
bdc89661 37#include "util/intlist.h"
514f1c67 38#include "util/thread_map.h"
bf2575c1 39#include "util/stat.h"
fd5cead2 40#include "trace/beauty/beauty.h"
97978b3e 41#include "trace-event.h"
9aca7f17 42#include "util/parse-events.h"
ba504235 43#include "util/bpf-loader.h"
566a0885 44#include "callchain.h"
fea01392 45#include "print_binary.h"
a067558e 46#include "string2.h"
fd0db102 47#include "syscalltbl.h"
96c14451 48#include "rb_resort.h"
514f1c67 49
a43783ae 50#include <errno.h>
fd20e811 51#include <inttypes.h>
4208735d 52#include <poll.h>
9607ad3a 53#include <signal.h>
514f1c67 54#include <stdlib.h>
017037ff 55#include <string.h>
8dd2a131 56#include <linux/err.h>
997bba8c 57#include <linux/filter.h>
877a7a11 58#include <linux/kernel.h>
39878d49 59#include <linux/random.h>
c6d4a494 60#include <linux/stringify.h>
bd48c63e 61#include <linux/time64.h>
bafae98e 62#include <fcntl.h>
4bcc4cff 63#include <sys/sysmacros.h>
514f1c67 64
3d689ed6
ACM		 65#include "sane_ctype.h"
66
c188e7ac
ACM		 67#ifndef O_CLOEXEC
68# define O_CLOEXEC 02000000
69#endif
70
83a51694
ACM		 71#ifndef F_LINUX_SPECIFIC_BASE
72# define F_LINUX_SPECIFIC_BASE 1024
73#endif
74
d1d438a3
ACM		 75struct trace {
76 struct perf_tool tool;
fd0db102 77 struct syscalltbl *sctbl;
d1d438a3
ACM		 78 struct {
79 int max;
80 struct syscall *table;
b27b38ed 81 struct bpf_map *map;
d1d438a3
ACM		 82 struct {
83 struct perf_evsel *sys_enter,
d3d1c4bd
ACM		 84 *sys_exit,
85 *augmented;
d1d438a3
ACM		 86 } events;
87 } syscalls;
88 struct record_opts opts;
89 struct perf_evlist *evlist;
90 struct machine *host;
91 struct thread *current;
9ea42ba4 92 struct cgroup *cgroup;
d1d438a3
ACM		 93 u64 base_time;
94 FILE *output;
95 unsigned long nr_events;
5067a8cd
ACM		 96 unsigned long nr_events_printed;
97 unsigned long max_events;
d1d438a3
ACM		 98 struct strlist *ev_qualifier;
99 struct {
100 size_t nr;
101 int *entries;
102 } ev_qualifier_ids;
d1d438a3
ACM		 103 struct {
104 size_t nr;
105 pid_t *entries;
744fafc7 106 struct bpf_map *map;
d1d438a3
ACM		 107 } filter_pids;
108 double duration_filter;
109 double runtime_ms;
110 struct {
111 u64 vfs_getname,
112 proc_getname;
113 } stats;
c6d4a494 114 unsigned int max_stack;
5cf9c84e 115 unsigned int min_stack;
b9b6a2ea 116 int raw_augmented_syscalls_args_size;
cd26ea6d 117 bool raw_augmented_syscalls;
b9b6a2ea 118 bool sort_events;
d1d438a3
ACM		 119 bool not_ev_qualifier;
120 bool live;
121 bool full_time;
122 bool sched;
123 bool multiple_threads;
124 bool summary;
125 bool summary_only;
0a6545bd 126 bool failure_only;
d1d438a3 127 bool show_comm;
591421e1 128 bool print_sample;
d1d438a3
ACM		 129 bool show_tool_stats;
130 bool trace_syscalls;
44621819 131 bool kernel_syscallchains;
9ed45d59 132 s16 args_alignment;
b036146f 133 bool show_tstamp;
42e4a52d 134 bool show_duration;
e7c634fc 135 bool show_zeros;
9d6dc178 136 bool show_arg_names;
c65c83ff 137 bool show_string_prefix;
d1d438a3
ACM		 138 bool force;
139 bool vfs_getname;
140 int trace_pgfaults;
028713aa
JO		 141 struct {
142 struct ordered_events data;
143 u64 last;
144 } oe;
d1d438a3 145};
a1c2552d 146
77170988
ACM		 147struct tp_field {
148 int offset;
149 union {
150 u64 (*integer)(struct tp_field *field, struct perf_sample *sample);
151 void *(*pointer)(struct tp_field *field, struct perf_sample *sample);
152 };
153};
154
155#define TP_UINT_FIELD(bits) \
156static u64 tp_field__u##bits(struct tp_field *field, struct perf_sample *sample) \
157{ \
55d43bca
DA		 158 u##bits value; \
159 memcpy(&value, sample->raw_data + field->offset, sizeof(value)); \
160 return value; \
77170988
ACM		 161}
162
163TP_UINT_FIELD(8);
164TP_UINT_FIELD(16);
165TP_UINT_FIELD(32);
166TP_UINT_FIELD(64);
167
168#define TP_UINT_FIELD__SWAPPED(bits) \
169static u64 tp_field__swapped_u##bits(struct tp_field *field, struct perf_sample *sample) \
170{ \
55d43bca
DA		 171 u##bits value; \
172 memcpy(&value, sample->raw_data + field->offset, sizeof(value)); \
77170988
ACM		 173 return bswap_##bits(value);\
174}
175
176TP_UINT_FIELD__SWAPPED(16);
177TP_UINT_FIELD__SWAPPED(32);
178TP_UINT_FIELD__SWAPPED(64);
179
aa823f58 180static int __tp_field__init_uint(struct tp_field *field, int size, int offset, bool needs_swap)
77170988 181{
aa823f58 182 field->offset = offset;
77170988 183
aa823f58 184 switch (size) {
77170988
ACM		 185 case 1:
186 field->integer = tp_field__u8;
187 break;
188 case 2:
189 field->integer = needs_swap ? tp_field__swapped_u16 : tp_field__u16;
190 break;
191 case 4:
192 field->integer = needs_swap ? tp_field__swapped_u32 : tp_field__u32;
193 break;
194 case 8:
195 field->integer = needs_swap ? tp_field__swapped_u64 : tp_field__u64;
196 break;
197 default:
198 return -1;
199 }
200
201 return 0;
202}
203
2c92f982 204static int tp_field__init_uint(struct tp_field *field, struct tep_format_field *format_field, bool needs_swap)
aa823f58
ACM		 205{
206 return __tp_field__init_uint(field, format_field->size, format_field->offset, needs_swap);
207}
208
77170988
ACM		 209static void *tp_field__ptr(struct tp_field *field, struct perf_sample *sample)
210{
211 return sample->raw_data + field->offset;
212}
213
aa823f58 214static int __tp_field__init_ptr(struct tp_field *field, int offset)
77170988 215{
aa823f58 216 field->offset = offset;
77170988
ACM		 217 field->pointer = tp_field__ptr;
218 return 0;
219}
220
2c92f982 221static int tp_field__init_ptr(struct tp_field *field, struct tep_format_field *format_field)
aa823f58
ACM		 222{
223 return __tp_field__init_ptr(field, format_field->offset);
224}
225
77170988
ACM		 226struct syscall_tp {
227 struct tp_field id;
228 union {
229 struct tp_field args, ret;
230 };
231};
232
233static int perf_evsel__init_tp_uint_field(struct perf_evsel *evsel,
234 struct tp_field *field,
235 const char *name)
236{
2c92f982 237 struct tep_format_field *format_field = perf_evsel__field(evsel, name);
77170988
ACM		 238
239 if (format_field == NULL)
240 return -1;
241
242 return tp_field__init_uint(field, format_field, evsel->needs_swap);
243}
244
245#define perf_evsel__init_sc_tp_uint_field(evsel, name) \
246 ({ struct syscall_tp *sc = evsel->priv;\
247 perf_evsel__init_tp_uint_field(evsel, &sc->name, #name); })
248
249static int perf_evsel__init_tp_ptr_field(struct perf_evsel *evsel,
250 struct tp_field *field,
251 const char *name)
252{
2c92f982 253 struct tep_format_field *format_field = perf_evsel__field(evsel, name);
77170988
ACM		 254
255 if (format_field == NULL)
256 return -1;
257
258 return tp_field__init_ptr(field, format_field);
259}
260
261#define perf_evsel__init_sc_tp_ptr_field(evsel, name) \
262 ({ struct syscall_tp *sc = evsel->priv;\
263 perf_evsel__init_tp_ptr_field(evsel, &sc->name, #name); })
264
265static void perf_evsel__delete_priv(struct perf_evsel *evsel)
266{
04662523 267 zfree(&evsel->priv);
77170988
ACM		 268 perf_evsel__delete(evsel);
269}
270
d32855fa
ACM		 271static int perf_evsel__init_syscall_tp(struct perf_evsel *evsel)
272{
273 struct syscall_tp *sc = evsel->priv = malloc(sizeof(struct syscall_tp));
274
275 if (evsel->priv != NULL) {
42da438c
ACM		 276 if (perf_evsel__init_tp_uint_field(evsel, &sc->id, "__syscall_nr") &&
277 perf_evsel__init_tp_uint_field(evsel, &sc->id, "nr"))
d32855fa
ACM		 278 goto out_delete;
279 return 0;
280 }
281
282 return -ENOMEM;
283out_delete:
284 zfree(&evsel->priv);
285 return -ENOENT;
286}
287
b9b6a2ea 288static int perf_evsel__init_augmented_syscall_tp(struct perf_evsel *evsel, struct perf_evsel *tp)
d3d1c4bd
ACM		 289{
290 struct syscall_tp *sc = evsel->priv = malloc(sizeof(struct syscall_tp));
291
b9b6a2ea
ACM		 292 if (evsel->priv != NULL) {
293 struct tep_format_field *syscall_id = perf_evsel__field(tp, "id");
294 if (syscall_id == NULL)
295 syscall_id = perf_evsel__field(tp, "__syscall_nr");
296 if (syscall_id == NULL)
297 goto out_delete;
298 if (__tp_field__init_uint(&sc->id, syscall_id->size, syscall_id->offset, evsel->needs_swap))
d3d1c4bd
ACM		 299 goto out_delete;
300
301 return 0;
302 }
303
304 return -ENOMEM;
305out_delete:
306 zfree(&evsel->priv);
307 return -EINVAL;
308}
309
310static int perf_evsel__init_augmented_syscall_tp_args(struct perf_evsel *evsel)
311{
312 struct syscall_tp *sc = evsel->priv;
313
314 return __tp_field__init_ptr(&sc->args, sc->id.offset + sizeof(u64));
315}
316
b1a9e253
ACM		 317static int perf_evsel__init_augmented_syscall_tp_ret(struct perf_evsel *evsel)
318{
319 struct syscall_tp *sc = evsel->priv;
320
321 return __tp_field__init_uint(&sc->ret, sizeof(u64), sc->id.offset + sizeof(u64), evsel->needs_swap);
322}
323
63f11c80 324static int perf_evsel__init_raw_syscall_tp(struct perf_evsel *evsel, void *handler)
96695d44
NK		 325{
326 evsel->priv = malloc(sizeof(struct syscall_tp));
327 if (evsel->priv != NULL) {
328 if (perf_evsel__init_sc_tp_uint_field(evsel, id))
329 goto out_delete;
330
331 evsel->handler = handler;
332 return 0;
333 }
334
335 return -ENOMEM;
336
337out_delete:
04662523 338 zfree(&evsel->priv);
96695d44
NK		 339 return -ENOENT;
340}
341
63f11c80 342static struct perf_evsel *perf_evsel__raw_syscall_newtp(const char *direction, void *handler)
77170988 343{
ef503831 344 struct perf_evsel *evsel = perf_evsel__newtp("raw_syscalls", direction);
77170988 345
9aca7f17 346 /* older kernel (e.g., RHEL6) use syscalls:{enter,exit} */
8dd2a131 347 if (IS_ERR(evsel))
9aca7f17
DA		 348 evsel = perf_evsel__newtp("syscalls", direction);
349
8dd2a131
JO		 350 if (IS_ERR(evsel))
351 return NULL;
352
63f11c80 353 if (perf_evsel__init_raw_syscall_tp(evsel, handler))
8dd2a131 354 goto out_delete;
77170988
ACM		 355
356 return evsel;
357
358out_delete:
359 perf_evsel__delete_priv(evsel);
360 return NULL;
361}
362
363#define perf_evsel__sc_tp_uint(evsel, name, sample) \
364 ({ struct syscall_tp *fields = evsel->priv; \
365 fields->name.integer(&fields->name, sample); })
366
367#define perf_evsel__sc_tp_ptr(evsel, name, sample) \
368 ({ struct syscall_tp *fields = evsel->priv; \
369 fields->name.pointer(&fields->name, sample); })
370
c65c83ff 371size_t strarray__scnprintf(struct strarray *sa, char *bf, size_t size, const char *intfmt, bool show_prefix, int val)
0ae79636
ACM		 372{
373 int idx = val - sa->offset;
1f115cb7 374
9614b8d6
ACM		 375 if (idx < 0 || idx >= sa->nr_entries || sa->entries[idx] == NULL) {
376 size_t printed = scnprintf(bf, size, intfmt, val);
377 if (show_prefix)
378 printed += scnprintf(bf + printed, size - printed, " /* %s??? */", sa->prefix);
379 return printed;
380 }
1f115cb7 381
c65c83ff 382 return scnprintf(bf, size, "%s%s", show_prefix ? sa->prefix : "", sa->entries[idx]);
03e3adc9
ACM		 383}
384
975b7c2f
ACM		 385static size_t __syscall_arg__scnprintf_strarray(char *bf, size_t size,
386 const char *intfmt,
387 struct syscall_arg *arg)
1f115cb7 388{
c65c83ff 389 return strarray__scnprintf(arg->parm, bf, size, intfmt, arg->show_string_prefix, arg->val);
1f115cb7
ACM		 390}
391
975b7c2f
ACM		 392static size_t syscall_arg__scnprintf_strarray(char *bf, size_t size,
393 struct syscall_arg *arg)
394{
395 return __syscall_arg__scnprintf_strarray(bf, size, "%d", arg);
396}
397
1f115cb7
ACM		 398#define SCA_STRARRAY syscall_arg__scnprintf_strarray
399
1f2d085e 400size_t strarrays__scnprintf(struct strarrays *sas, char *bf, size_t size, const char *intfmt, bool show_prefix, int val)
83a51694 401{
9614b8d6 402 size_t printed;
83a51694
ACM		 403 int i;
404
405 for (i = 0; i < sas->nr_entries; ++i) {
406 struct strarray *sa = sas->entries[i];
1f2d085e 407 int idx = val - sa->offset;
83a51694
ACM		 408
409 if (idx >= 0 && idx < sa->nr_entries) {
410 if (sa->entries[idx] == NULL)
411 break;
1f2d085e 412 return scnprintf(bf, size, "%s%s", show_prefix ? sa->prefix : "", sa->entries[idx]);
83a51694
ACM		 413 }
414 }
415
9614b8d6
ACM		 416 printed = scnprintf(bf, size, intfmt, val);
417 if (show_prefix)
418 printed += scnprintf(bf + printed, size - printed, " /* %s??? */", sas->entries[0]->prefix);
419 return printed;
1f2d085e
ACM		 420}
421
422size_t syscall_arg__scnprintf_strarrays(char *bf, size_t size,
423 struct syscall_arg *arg)
424{
425 return strarrays__scnprintf(arg->parm, bf, size, "%d", arg->show_string_prefix, arg->val);
83a51694
ACM		 426}
427
48e1f91a
ACM		 428#ifndef AT_FDCWD
429#define AT_FDCWD -100
430#endif
431
75b757ca
ACM		 432static size_t syscall_arg__scnprintf_fd_at(char *bf, size_t size,
433 struct syscall_arg *arg)
434{
435 int fd = arg->val;
c65c83ff 436 const char *prefix = "AT_FD";
75b757ca
ACM		 437
438 if (fd == AT_FDCWD)
c65c83ff 439 return scnprintf(bf, size, "%s%s", arg->show_string_prefix ? prefix : "", "CWD");
75b757ca
ACM		 440
441 return syscall_arg__scnprintf_fd(bf, size, arg);
442}
443
444#define SCA_FDAT syscall_arg__scnprintf_fd_at
445
446static size_t syscall_arg__scnprintf_close_fd(char *bf, size_t size,
447 struct syscall_arg *arg);
448
449#define SCA_CLOSE_FD syscall_arg__scnprintf_close_fd
450
2c2b1623 451size_t syscall_arg__scnprintf_hex(char *bf, size_t size, struct syscall_arg *arg)
13d4ff3e 452{
01533e97 453 return scnprintf(bf, size, "%#lx", arg->val);
13d4ff3e
ACM		 454}
455
ce05539f
ACM		 456size_t syscall_arg__scnprintf_ptr(char *bf, size_t size, struct syscall_arg *arg)
457{
458 if (arg->val == 0)
459 return scnprintf(bf, size, "NULL");
460 return syscall_arg__scnprintf_hex(bf, size, arg);
461}
462
2c2b1623 463size_t syscall_arg__scnprintf_int(char *bf, size_t size, struct syscall_arg *arg)
a1c2552d
ACM		 464{
465 return scnprintf(bf, size, "%d", arg->val);
466}
467
5dde91ed
ACM		 468size_t syscall_arg__scnprintf_long(char *bf, size_t size, struct syscall_arg *arg)
469{
470 return scnprintf(bf, size, "%ld", arg->val);
471}
472
729a7841
ACM		 473static const char *bpf_cmd[] = {
474 "MAP_CREATE", "MAP_LOOKUP_ELEM", "MAP_UPDATE_ELEM", "MAP_DELETE_ELEM",
475 "MAP_GET_NEXT_KEY", "PROG_LOAD",
476};
2e3d7fac 477static DEFINE_STRARRAY(bpf_cmd, "BPF_");
729a7841 478
03e3adc9 479static const char *epoll_ctl_ops[] = { "ADD", "DEL", "MOD", };
2e3d7fac 480static DEFINE_STRARRAY_OFFSET(epoll_ctl_ops, "EPOLL_CTL_", 1);
eac032c5 481
1f115cb7 482static const char *itimers[] = { "REAL", "VIRTUAL", "PROF", };
2e3d7fac 483static DEFINE_STRARRAY(itimers, "ITIMER_");
1f115cb7 484
b62bee1b
ACM		 485static const char *keyctl_options[] = {
486 "GET_KEYRING_ID", "JOIN_SESSION_KEYRING", "UPDATE", "REVOKE", "CHOWN",
487 "SETPERM", "DESCRIBE", "CLEAR", "LINK", "UNLINK", "SEARCH", "READ",
488 "INSTANTIATE", "NEGATE", "SET_REQKEY_KEYRING", "SET_TIMEOUT",
489 "ASSUME_AUTHORITY", "GET_SECURITY", "SESSION_TO_PARENT", "REJECT",
490 "INSTANTIATE_IOV", "INVALIDATE", "GET_PERSISTENT",
491};
2e3d7fac 492static DEFINE_STRARRAY(keyctl_options, "KEYCTL_");
b62bee1b 493
efe6b882
ACM		 494static const char *whences[] = { "SET", "CUR", "END",
495#ifdef SEEK_DATA
496"DATA",
497#endif
498#ifdef SEEK_HOLE
499"HOLE",
500#endif
501};
2e3d7fac 502static DEFINE_STRARRAY(whences, "SEEK_");
f9da0b0c 503
80f587d5
ACM		 504static const char *fcntl_cmds[] = {
505 "DUPFD", "GETFD", "SETFD", "GETFL", "SETFL", "GETLK", "SETLK",
e000e5e3
ACM		 506 "SETLKW", "SETOWN", "GETOWN", "SETSIG", "GETSIG", "GETLK64",
507 "SETLK64", "SETLKW64", "SETOWN_EX", "GETOWN_EX",
508 "GETOWNER_UIDS",
80f587d5 509};
2e3d7fac 510static DEFINE_STRARRAY(fcntl_cmds, "F_");
80f587d5 511
83a51694
ACM		 512static const char *fcntl_linux_specific_cmds[] = {
513 "SETLEASE", "GETLEASE", "NOTIFY", [5] = "CANCELLK", "DUPFD_CLOEXEC",
514 "SETPIPE_SZ", "GETPIPE_SZ", "ADD_SEALS", "GET_SEALS",
64e4561d 515 "GET_RW_HINT", "SET_RW_HINT", "GET_FILE_RW_HINT", "SET_FILE_RW_HINT",
83a51694
ACM		 516};
517
2e3d7fac 518static DEFINE_STRARRAY_OFFSET(fcntl_linux_specific_cmds, "F_", F_LINUX_SPECIFIC_BASE);
83a51694
ACM		 519
520static struct strarray *fcntl_cmds_arrays[] = {
521 &strarray__fcntl_cmds,
522 &strarray__fcntl_linux_specific_cmds,
523};
524
525static DEFINE_STRARRAYS(fcntl_cmds_arrays);
526
c045bf02
ACM		 527static const char *rlimit_resources[] = {
528 "CPU", "FSIZE", "DATA", "STACK", "CORE", "RSS", "NPROC", "NOFILE",
529 "MEMLOCK", "AS", "LOCKS", "SIGPENDING", "MSGQUEUE", "NICE", "RTPRIO",
530 "RTTIME",
531};
2e3d7fac 532static DEFINE_STRARRAY(rlimit_resources, "RLIMIT_");
c045bf02 533
eb5b1b14 534static const char *sighow[] = { "BLOCK", "UNBLOCK", "SETMASK", };
2e3d7fac 535static DEFINE_STRARRAY(sighow, "SIG_");
eb5b1b14 536
4f8c1b74
DA		 537static const char *clockid[] = {
538 "REALTIME", "MONOTONIC", "PROCESS_CPUTIME_ID", "THREAD_CPUTIME_ID",
28ebb87c
ACM		 539 "MONOTONIC_RAW", "REALTIME_COARSE", "MONOTONIC_COARSE", "BOOTTIME",
540 "REALTIME_ALARM", "BOOTTIME_ALARM", "SGI_CYCLE", "TAI"
4f8c1b74 541};
2e3d7fac 542static DEFINE_STRARRAY(clockid, "CLOCK_");
4f8c1b74 543
51108999
ACM		 544static size_t syscall_arg__scnprintf_access_mode(char *bf, size_t size,
545 struct syscall_arg *arg)
546{
c65c83ff
ACM		 547 bool show_prefix = arg->show_string_prefix;
548 const char *suffix = "_OK";
51108999
ACM		 549 size_t printed = 0;
550 int mode = arg->val;
551
552 if (mode == F_OK) /* 0 */
c65c83ff 553 return scnprintf(bf, size, "F%s", show_prefix ? suffix : "");
51108999
ACM		 554#define P_MODE(n) \
555 if (mode & n##_OK) { \
c65c83ff 556 printed += scnprintf(bf + printed, size - printed, "%s%s", #n, show_prefix ? suffix : ""); \
51108999
ACM		 557 mode &= ~n##_OK; \
558 }
559
560 P_MODE(R);
561 P_MODE(W);
562 P_MODE(X);
563#undef P_MODE
564
565 if (mode)
566 printed += scnprintf(bf + printed, size - printed, "|%#x", mode);
567
568 return printed;
569}
570
571#define SCA_ACCMODE syscall_arg__scnprintf_access_mode
572
f994592d
ACM		 573static size_t syscall_arg__scnprintf_filename(char *bf, size_t size,
574 struct syscall_arg *arg);
575
576#define SCA_FILENAME syscall_arg__scnprintf_filename
577
46cce19b
ACM		 578static size_t syscall_arg__scnprintf_pipe_flags(char *bf, size_t size,
579 struct syscall_arg *arg)
580{
c65c83ff
ACM		 581 bool show_prefix = arg->show_string_prefix;
582 const char *prefix = "O_";
46cce19b
ACM		 583 int printed = 0, flags = arg->val;
584
585#define P_FLAG(n) \
586 if (flags & O_##n) { \
c65c83ff 587 printed += scnprintf(bf + printed, size - printed, "%s%s%s", printed ? "|" : "", show_prefix ? prefix : "", #n); \
46cce19b
ACM		 588 flags &= ~O_##n; \
589 }
590
591 P_FLAG(CLOEXEC);
592 P_FLAG(NONBLOCK);
593#undef P_FLAG
594
595 if (flags)
596 printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags);
597
598 return printed;
599}
600
601#define SCA_PIPE_FLAGS syscall_arg__scnprintf_pipe_flags
602
a355a61e
ACM		 603#ifndef GRND_NONBLOCK
604#define GRND_NONBLOCK 0x0001
605#endif
606#ifndef GRND_RANDOM
607#define GRND_RANDOM 0x0002
608#endif
609
39878d49
ACM		 610static size_t syscall_arg__scnprintf_getrandom_flags(char *bf, size_t size,
611 struct syscall_arg *arg)
612{
c65c83ff
ACM		 613 bool show_prefix = arg->show_string_prefix;
614 const char *prefix = "GRND_";
39878d49
ACM		 615 int printed = 0, flags = arg->val;
616
617#define P_FLAG(n) \
618 if (flags & GRND_##n) { \
c65c83ff 619 printed += scnprintf(bf + printed, size - printed, "%s%s%s", printed ? "|" : "", show_prefix ? prefix : "", #n); \
39878d49
ACM		 620 flags &= ~GRND_##n; \
621 }
622
623 P_FLAG(RANDOM);
624 P_FLAG(NONBLOCK);
625#undef P_FLAG
626
627 if (flags)
628 printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags);
629
630 return printed;
631}
632
633#define SCA_GETRANDOM_FLAGS syscall_arg__scnprintf_getrandom_flags
634
82d4a110
ACM		 635#define STRARRAY(name, array) \
636 { .scnprintf = SCA_STRARRAY, \
637 .parm = &strarray__##array, }
453350dd 638
092bd3cd 639#include "trace/beauty/arch_errno_names.c"
ea8dc3ce 640#include "trace/beauty/eventfd.c"
d5d71e86 641#include "trace/beauty/futex_op.c"
3258abe0 642#include "trace/beauty/futex_val3.c"
df4cb167 643#include "trace/beauty/mmap.c"
ba2f22cf 644#include "trace/beauty/mode_t.c"
a30e6259 645#include "trace/beauty/msg_flags.c"
8f48df69 646#include "trace/beauty/open_flags.c"
62de344e 647#include "trace/beauty/perf_event_open.c"
d5d71e86 648#include "trace/beauty/pid.c"
a3bca91f 649#include "trace/beauty/sched_policy.c"
f5cd95ea 650#include "trace/beauty/seccomp.c"
12199d8e 651#include "trace/beauty/signum.c"
bbf86c43 652#include "trace/beauty/socket_type.c"
7206b900 653#include "trace/beauty/waitid_options.c"
a3bca91f 654
82d4a110
ACM		 655struct syscall_arg_fmt {
656 size_t (*scnprintf)(char *bf, size_t size, struct syscall_arg *arg);
496fd346 657 unsigned long (*mask_val)(struct syscall_arg *arg, unsigned long val);
82d4a110 658 void *parm;
c51bdfec 659 const char *name;
d47737d5 660 bool show_zero;
82d4a110
ACM		 661};
662
514f1c67
ACM		 663static struct syscall_fmt {
664 const char *name;
aec1930b 665 const char *alias;
82d4a110 666 struct syscall_arg_fmt arg[6];
332337da 667 u8 nr_args;
11c8e39f 668 bool errpid;
514f1c67 669 bool timeout;
04b34729 670 bool hexret;
514f1c67 671} syscall_fmts[] = {
1f63139c 672 { .name = "access",
82d4a110 673 .arg = { [1] = { .scnprintf = SCA_ACCMODE, /* mode */ }, }, },
fb7068e7
ACM		 674 { .name = "arch_prctl",
675 .arg = { [0] = { .scnprintf = SCA_X86_ARCH_PRCTL_CODE, /* code */ },
676 [1] = { .scnprintf = SCA_PTR, /* arg2 */ }, }, },
02ef2884
ACM		 677 { .name = "bind",
678 .arg = { [1] = { .scnprintf = SCA_SOCKADDR, /* umyaddr */ }, }, },
1f63139c 679 { .name = "bpf",
82d4a110 680 .arg = { [0] = STRARRAY(cmd, bpf_cmd), }, },
beccb2b5 681 { .name = "brk", .hexret = true,
ce05539f 682 .arg = { [0] = { .scnprintf = SCA_PTR, /* brk */ }, }, },
1f63139c 683 { .name = "clock_gettime",
82d4a110 684 .arg = { [0] = STRARRAY(clk_id, clockid), }, },
33396a3a
ACM		 685 { .name = "clone", .errpid = true, .nr_args = 5,
686 .arg = { [0] = { .name = "flags", .scnprintf = SCA_CLONE_FLAGS, },
687 [1] = { .name = "child_stack", .scnprintf = SCA_HEX, },
688 [2] = { .name = "parent_tidptr", .scnprintf = SCA_HEX, },
689 [3] = { .name = "child_tidptr", .scnprintf = SCA_HEX, },
690 [4] = { .name = "tls", .scnprintf = SCA_HEX, }, }, },
1f63139c 691 { .name = "close",
82d4a110 692 .arg = { [0] = { .scnprintf = SCA_CLOSE_FD, /* fd */ }, }, },
d5a7e661
ACM		 693 { .name = "connect",
694 .arg = { [1] = { .scnprintf = SCA_SOCKADDR, /* servaddr */ }, }, },
1f63139c 695 { .name = "epoll_ctl",
82d4a110 696 .arg = { [1] = STRARRAY(op, epoll_ctl_ops), }, },
1f63139c 697 { .name = "eventfd2",
82d4a110 698 .arg = { [1] = { .scnprintf = SCA_EFD_FLAGS, /* flags */ }, }, },
1f63139c 699 { .name = "fchmodat",
82d4a110 700 .arg = { [0] = { .scnprintf = SCA_FDAT, /* fd */ }, }, },
1f63139c 701 { .name = "fchownat",
82d4a110 702 .arg = { [0] = { .scnprintf = SCA_FDAT, /* fd */ }, }, },
1f63139c 703 { .name = "fcntl",
82d4a110 704 .arg = { [1] = { .scnprintf = SCA_FCNTL_CMD, /* cmd */
39cc355b
ACM		 705 .parm = &strarrays__fcntl_cmds_arrays,
706 .show_zero = true, },
82d4a110 707 [2] = { .scnprintf = SCA_FCNTL_ARG, /* arg */ }, }, },
1f63139c 708 { .name = "flock",
82d4a110 709 .arg = { [1] = { .scnprintf = SCA_FLOCK, /* cmd */ }, }, },
1f63139c
ACM		 710 { .name = "fstat", .alias = "newfstat", },
711 { .name = "fstatat", .alias = "newfstatat", },
712 { .name = "futex",
3258abe0
ACM		 713 .arg = { [1] = { .scnprintf = SCA_FUTEX_OP, /* op */ },
714 [5] = { .scnprintf = SCA_FUTEX_VAL3, /* val3 */ }, }, },
1f63139c 715 { .name = "futimesat",
82d4a110 716 .arg = { [0] = { .scnprintf = SCA_FDAT, /* fd */ }, }, },
1f63139c 717 { .name = "getitimer",
82d4a110 718 .arg = { [0] = STRARRAY(which, itimers), }, },
c65f1070 719 { .name = "getpid", .errpid = true, },
d1d438a3 720 { .name = "getpgid", .errpid = true, },
c65f1070 721 { .name = "getppid", .errpid = true, },
1f63139c 722 { .name = "getrandom",
82d4a110 723 .arg = { [2] = { .scnprintf = SCA_GETRANDOM_FLAGS, /* flags */ }, }, },
1f63139c 724 { .name = "getrlimit",
82d4a110 725 .arg = { [0] = STRARRAY(resource, rlimit_resources), }, },
2d1073de 726 { .name = "gettid", .errpid = true, },
1f63139c 727 { .name = "ioctl",
82d4a110 728 .arg = {
844ae5b4
ACM		 729#if defined(__i386__) || defined(__x86_64__)
730/*
731 * FIXME: Make this available to all arches.
732 */
1cc47f2d 733 [1] = { .scnprintf = SCA_IOCTL_CMD, /* cmd */ },
82d4a110 734 [2] = { .scnprintf = SCA_HEX, /* arg */ }, }, },
844ae5b4 735#else
82d4a110 736 [2] = { .scnprintf = SCA_HEX, /* arg */ }, }, },
844ae5b4 737#endif
1de3038d
ACM		 738 { .name = "kcmp", .nr_args = 5,
739 .arg = { [0] = { .name = "pid1", .scnprintf = SCA_PID, },
740 [1] = { .name = "pid2", .scnprintf = SCA_PID, },
741 [2] = { .name = "type", .scnprintf = SCA_KCMP_TYPE, },
742 [3] = { .name = "idx1", .scnprintf = SCA_KCMP_IDX, },
743 [4] = { .name = "idx2", .scnprintf = SCA_KCMP_IDX, }, }, },
1f63139c 744 { .name = "keyctl",
82d4a110 745 .arg = { [0] = STRARRAY(option, keyctl_options), }, },
1f63139c 746 { .name = "kill",
82d4a110 747 .arg = { [1] = { .scnprintf = SCA_SIGNUM, /* sig */ }, }, },
1f63139c 748 { .name = "linkat",
82d4a110 749 .arg = { [0] = { .scnprintf = SCA_FDAT, /* fd */ }, }, },
1f63139c 750 { .name = "lseek",
82d4a110 751 .arg = { [2] = STRARRAY(whence, whences), }, },
1f63139c
ACM		 752 { .name = "lstat", .alias = "newlstat", },
753 { .name = "madvise",
82d4a110
ACM		 754 .arg = { [0] = { .scnprintf = SCA_HEX, /* start */ },
755 [2] = { .scnprintf = SCA_MADV_BHV, /* behavior */ }, }, },
1f63139c 756 { .name = "mkdirat",
82d4a110 757 .arg = { [0] = { .scnprintf = SCA_FDAT, /* fd */ }, }, },
1f63139c 758 { .name = "mknodat",
82d4a110 759 .arg = { [0] = { .scnprintf = SCA_FDAT, /* fd */ }, }, },
beccb2b5 760 { .name = "mmap", .hexret = true,
54265664
JO		 761/* The standard mmap maps to old_mmap on s390x */
762#if defined(__s390x__)
763 .alias = "old_mmap",
764#endif
ce05539f 765 .arg = { [2] = { .scnprintf = SCA_MMAP_PROT, /* prot */ },
a6631340
ACM		 766 [3] = { .scnprintf = SCA_MMAP_FLAGS, /* flags */ },
767 [5] = { .scnprintf = SCA_HEX, /* offset */ }, }, },
73d141ad 768 { .name = "mount",
23c07a23
ACM		 769 .arg = { [0] = { .scnprintf = SCA_FILENAME, /* dev_name */ },
770 [3] = { .scnprintf = SCA_MOUNT_FLAGS, /* flags */
73d141ad 771 .mask_val = SCAMV_MOUNT_FLAGS, /* flags */ }, }, },
1f63139c 772 { .name = "mprotect",
82d4a110
ACM		 773 .arg = { [0] = { .scnprintf = SCA_HEX, /* start */ },
774 [2] = { .scnprintf = SCA_MMAP_PROT, /* prot */ }, }, },
1f63139c 775 { .name = "mq_unlink",
82d4a110 776 .arg = { [0] = { .scnprintf = SCA_FILENAME, /* u_name */ }, }, },
ae685380 777 { .name = "mremap", .hexret = true,
ce05539f 778 .arg = { [3] = { .scnprintf = SCA_MREMAP_FLAGS, /* flags */ }, }, },
1f63139c 779 { .name = "name_to_handle_at",
82d4a110 780 .arg = { [0] = { .scnprintf = SCA_FDAT, /* dfd */ }, }, },
1f63139c 781 { .name = "newfstatat",
82d4a110 782 .arg = { [0] = { .scnprintf = SCA_FDAT, /* dfd */ }, }, },
1f63139c 783 { .name = "open",
82d4a110 784 .arg = { [1] = { .scnprintf = SCA_OPEN_FLAGS, /* flags */ }, }, },
1f63139c 785 { .name = "open_by_handle_at",
82d4a110
ACM		 786 .arg = { [0] = { .scnprintf = SCA_FDAT, /* dfd */ },
787 [2] = { .scnprintf = SCA_OPEN_FLAGS, /* flags */ }, }, },
1f63139c 788 { .name = "openat",
82d4a110
ACM		 789 .arg = { [0] = { .scnprintf = SCA_FDAT, /* dfd */ },
790 [2] = { .scnprintf = SCA_OPEN_FLAGS, /* flags */ }, }, },
1f63139c 791 { .name = "perf_event_open",
82d4a110
ACM		 792 .arg = { [2] = { .scnprintf = SCA_INT, /* cpu */ },
793 [3] = { .scnprintf = SCA_FD, /* group_fd */ },
794 [4] = { .scnprintf = SCA_PERF_FLAGS, /* flags */ }, }, },
1f63139c 795 { .name = "pipe2",
82d4a110 796 .arg = { [1] = { .scnprintf = SCA_PIPE_FLAGS, /* flags */ }, }, },
83bc9c37
ACM		 797 { .name = "pkey_alloc",
798 .arg = { [1] = { .scnprintf = SCA_PKEY_ALLOC_ACCESS_RIGHTS, /* access_rights */ }, }, },
799 { .name = "pkey_free",
800 .arg = { [0] = { .scnprintf = SCA_INT, /* key */ }, }, },
801 { .name = "pkey_mprotect",
802 .arg = { [0] = { .scnprintf = SCA_HEX, /* start */ },
803 [2] = { .scnprintf = SCA_MMAP_PROT, /* prot */ },
804 [3] = { .scnprintf = SCA_INT, /* pkey */ }, }, },
1f63139c
ACM		 805 { .name = "poll", .timeout = true, },
806 { .name = "ppoll", .timeout = true, },
fb7068e7 807 { .name = "prctl",
d688d037
ACM		 808 .arg = { [0] = { .scnprintf = SCA_PRCTL_OPTION, /* option */ },
809 [1] = { .scnprintf = SCA_PRCTL_ARG2, /* arg2 */ },
810 [2] = { .scnprintf = SCA_PRCTL_ARG3, /* arg3 */ }, }, },
1f63139c
ACM		 811 { .name = "pread", .alias = "pread64", },
812 { .name = "preadv", .alias = "pread", },
813 { .name = "prlimit64",
82d4a110 814 .arg = { [1] = STRARRAY(resource, rlimit_resources), }, },
1f63139c
ACM		 815 { .name = "pwrite", .alias = "pwrite64", },
816 { .name = "readlinkat",
82d4a110 817 .arg = { [0] = { .scnprintf = SCA_FDAT, /* dfd */ }, }, },
1f63139c 818 { .name = "recvfrom",
82d4a110 819 .arg = { [3] = { .scnprintf = SCA_MSG_FLAGS, /* flags */ }, }, },
1f63139c 820 { .name = "recvmmsg",
82d4a110 821 .arg = { [3] = { .scnprintf = SCA_MSG_FLAGS, /* flags */ }, }, },
1f63139c 822 { .name = "recvmsg",
82d4a110 823 .arg = { [2] = { .scnprintf = SCA_MSG_FLAGS, /* flags */ }, }, },
1f63139c 824 { .name = "renameat",
436651ca
ACM		 825 .arg = { [0] = { .scnprintf = SCA_FDAT, /* olddirfd */ },
826 [2] = { .scnprintf = SCA_FDAT, /* newdirfd */ }, }, },
84a83541
ACM		 827 { .name = "renameat2",
828 .arg = { [0] = { .scnprintf = SCA_FDAT, /* olddirfd */ },
ca7ff2c8
ACM		 829 [2] = { .scnprintf = SCA_FDAT, /* newdirfd */ },
830 [4] = { .scnprintf = SCA_RENAMEAT2_FLAGS, /* flags */ }, }, },
1f63139c 831 { .name = "rt_sigaction",
82d4a110 832 .arg = { [0] = { .scnprintf = SCA_SIGNUM, /* sig */ }, }, },
1f63139c 833 { .name = "rt_sigprocmask",
82d4a110 834 .arg = { [0] = STRARRAY(how, sighow), }, },
1f63139c 835 { .name = "rt_sigqueueinfo",
82d4a110 836 .arg = { [1] = { .scnprintf = SCA_SIGNUM, /* sig */ }, }, },
1f63139c 837 { .name = "rt_tgsigqueueinfo",
82d4a110 838 .arg = { [2] = { .scnprintf = SCA_SIGNUM, /* sig */ }, }, },
1f63139c 839 { .name = "sched_setscheduler",
82d4a110 840 .arg = { [1] = { .scnprintf = SCA_SCHED_POLICY, /* policy */ }, }, },
1f63139c 841 { .name = "seccomp",
82d4a110
ACM		 842 .arg = { [0] = { .scnprintf = SCA_SECCOMP_OP, /* op */ },
843 [1] = { .scnprintf = SCA_SECCOMP_FLAGS, /* flags */ }, }, },
1f63139c
ACM		 844 { .name = "select", .timeout = true, },
845 { .name = "sendmmsg",
82d4a110 846 .arg = { [3] = { .scnprintf = SCA_MSG_FLAGS, /* flags */ }, }, },
1f63139c 847 { .name = "sendmsg",
82d4a110 848 .arg = { [2] = { .scnprintf = SCA_MSG_FLAGS, /* flags */ }, }, },
1f63139c 849 { .name = "sendto",
6ebb6862
ACM		 850 .arg = { [3] = { .scnprintf = SCA_MSG_FLAGS, /* flags */ },
851 [4] = { .scnprintf = SCA_SOCKADDR, /* addr */ }, }, },
c65f1070 852 { .name = "set_tid_address", .errpid = true, },
1f63139c 853 { .name = "setitimer",
82d4a110 854 .arg = { [0] = STRARRAY(which, itimers), }, },
1f63139c 855 { .name = "setrlimit",
82d4a110 856 .arg = { [0] = STRARRAY(resource, rlimit_resources), }, },
1f63139c 857 { .name = "socket",
82d4a110 858 .arg = { [0] = STRARRAY(family, socket_families),
162d3edb
ACM		 859 [1] = { .scnprintf = SCA_SK_TYPE, /* type */ },
860 [2] = { .scnprintf = SCA_SK_PROTO, /* protocol */ }, }, },
1f63139c 861 { .name = "socketpair",
82d4a110 862 .arg = { [0] = STRARRAY(family, socket_families),
162d3edb
ACM		 863 [1] = { .scnprintf = SCA_SK_TYPE, /* type */ },
864 [2] = { .scnprintf = SCA_SK_PROTO, /* protocol */ }, }, },
1f63139c
ACM		 865 { .name = "stat", .alias = "newstat", },
866 { .name = "statx",
82d4a110
ACM		 867 .arg = { [0] = { .scnprintf = SCA_FDAT, /* fdat */ },
868 [2] = { .scnprintf = SCA_STATX_FLAGS, /* flags */ } ,
869 [3] = { .scnprintf = SCA_STATX_MASK, /* mask */ }, }, },
1f63139c 870 { .name = "swapoff",
82d4a110 871 .arg = { [0] = { .scnprintf = SCA_FILENAME, /* specialfile */ }, }, },
1f63139c 872 { .name = "swapon",
82d4a110 873 .arg = { [0] = { .scnprintf = SCA_FILENAME, /* specialfile */ }, }, },
1f63139c 874 { .name = "symlinkat",
82d4a110 875 .arg = { [0] = { .scnprintf = SCA_FDAT, /* dfd */ }, }, },
1f63139c 876 { .name = "tgkill",
82d4a110 877 .arg = { [2] = { .scnprintf = SCA_SIGNUM, /* sig */ }, }, },
1f63139c 878 { .name = "tkill",
82d4a110 879 .arg = { [1] = { .scnprintf = SCA_SIGNUM, /* sig */ }, }, },
476c92ca
ACM		 880 { .name = "umount2", .alias = "umount",
881 .arg = { [0] = { .scnprintf = SCA_FILENAME, /* name */ }, }, },
1f63139c
ACM		 882 { .name = "uname", .alias = "newuname", },
883 { .name = "unlinkat",
82d4a110 884 .arg = { [0] = { .scnprintf = SCA_FDAT, /* dfd */ }, }, },
1f63139c 885 { .name = "utimensat",
82d4a110 886 .arg = { [0] = { .scnprintf = SCA_FDAT, /* dirfd */ }, }, },
11c8e39f 887 { .name = "wait4", .errpid = true,
82d4a110 888 .arg = { [2] = { .scnprintf = SCA_WAITID_OPTIONS, /* options */ }, }, },
11c8e39f 889 { .name = "waitid", .errpid = true,
82d4a110 890 .arg = { [3] = { .scnprintf = SCA_WAITID_OPTIONS, /* options */ }, }, },
514f1c67
ACM		 891};
892
893static int syscall_fmt__cmp(const void *name, const void *fmtp)
894{
895 const struct syscall_fmt *fmt = fmtp;
896 return strcmp(name, fmt->name);
897}
898
899static struct syscall_fmt *syscall_fmt__find(const char *name)
900{
901 const int nmemb = ARRAY_SIZE(syscall_fmts);
902 return bsearch(name, syscall_fmts, nmemb, sizeof(struct syscall_fmt), syscall_fmt__cmp);
903}
904
f932184e
ACM		 905static struct syscall_fmt *syscall_fmt__find_by_alias(const char *alias)
906{
907 int i, nmemb = ARRAY_SIZE(syscall_fmts);
908
909 for (i = 0; i < nmemb; ++i) {
910 if (syscall_fmts[i].alias && strcmp(syscall_fmts[i].alias, alias) == 0)
911 return &syscall_fmts[i];
912 }
913
914 return NULL;
915}
916
6a648b53
ACM		 917/*
918 * is_exit: is this "exit" or "exit_group"?
919 * is_open: is this "open" or "openat"? To associate the fd returned in sys_exit with the pathname in sys_enter.
7a983a0f 920 * args_size: sum of the sizes of the syscall arguments, anything after that is augmented stuff: pathname for openat, etc.
6a648b53 921 */
514f1c67 922struct syscall {
97fbf3f0 923 struct tep_event *tp_format;
f208bd8d 924 int nr_args;
7a983a0f 925 int args_size;
6a648b53
ACM		 926 bool is_exit;
927 bool is_open;
2c92f982 928 struct tep_format_field *args;
514f1c67
ACM		 929 const char *name;
930 struct syscall_fmt *fmt;
82d4a110 931 struct syscall_arg_fmt *arg_fmt;
514f1c67
ACM		 932};
933
bbab50dd
ACM		 934struct bpf_map_syscall_entry {
935 bool enabled;
936};
937
fd2b2975
ACM		 938/*
939 * We need to have this 'calculated' boolean because in some cases we really
940 * don't know what is the duration of a syscall, for instance, when we start
941 * a session and some threads are waiting for a syscall to finish, say 'poll',
942 * in which case all we can do is to print "( ? ) for duration and for the
943 * start timestamp.
944 */
945static size_t fprintf_duration(unsigned long t, bool calculated, FILE *fp)
60c907ab
ACM		 946{
947 double duration = (double)t / NSEC_PER_MSEC;
948 size_t printed = fprintf(fp, "(");
949
fd2b2975 950 if (!calculated)
522283fe 951 printed += fprintf(fp, " ");
fd2b2975 952 else if (duration >= 1.0)
60c907ab
ACM		 953 printed += color_fprintf(fp, PERF_COLOR_RED, "%6.3f ms", duration);
954 else if (duration >= 0.01)
955 printed += color_fprintf(fp, PERF_COLOR_YELLOW, "%6.3f ms", duration);
956 else
957 printed += color_fprintf(fp, PERF_COLOR_NORMAL, "%6.3f ms", duration);
c24ff998 958 return printed + fprintf(fp, "): ");
60c907ab
ACM		 959}
960
f994592d
ACM		 961/**
962 * filename.ptr: The filename char pointer that will be vfs_getname'd
963 * filename.entry_str_pos: Where to insert the string translated from
964 * filename.ptr by the vfs_getname tracepoint/kprobe.
84486caa
ACM		 965 * ret_scnprintf: syscall args may set this to a different syscall return
966 * formatter, for instance, fcntl may return fds, file flags, etc.
f994592d 967 */
752fde44
ACM		 968struct thread_trace {
969 u64 entry_time;
752fde44 970 bool entry_pending;
efd5745e 971 unsigned long nr_events;
a2ea67d7 972 unsigned long pfmaj, pfmin;
752fde44 973 char *entry_str;
1302d88e 974 double runtime_ms;
7ee57434 975 size_t (*ret_scnprintf)(char *bf, size_t size, struct syscall_arg *arg);
f994592d
ACM		 976 struct {
977 unsigned long ptr;
7f4f8001
ACM		 978 short int entry_str_pos;
979 bool pending_open;
980 unsigned int namelen;
981 char *name;
f994592d 982 } filename;
75b757ca 983 struct {
f4a74fcb
ACM		 984 int max;
985 struct file *table;
986 } files;
bf2575c1
DA		 987
988 struct intlist *syscall_stats;
752fde44
ACM		 989};
990
991static struct thread_trace *thread_trace__new(void)
992{
75b757ca
ACM		 993 struct thread_trace *ttrace = zalloc(sizeof(struct thread_trace));
994
995 if (ttrace)
f4a74fcb 996 ttrace->files.max = -1;
75b757ca 997
bf2575c1
DA		 998 ttrace->syscall_stats = intlist__new(NULL);
999
75b757ca 1000 return ttrace;
752fde44
ACM		 1001}
1002
c24ff998 1003static struct thread_trace *thread__trace(struct thread *thread, FILE *fp)
752fde44 1004{
efd5745e
ACM		 1005 struct thread_trace *ttrace;
1006
752fde44
ACM		 1007 if (thread == NULL)
1008 goto fail;
1009
89dceb22
NK		 1010 if (thread__priv(thread) == NULL)
1011 thread__set_priv(thread, thread_trace__new());
48000a1a 1012
89dceb22 1013 if (thread__priv(thread) == NULL)
752fde44
ACM		 1014 goto fail;
1015
89dceb22 1016 ttrace = thread__priv(thread);
efd5745e
ACM		 1017 ++ttrace->nr_events;
1018
1019 return ttrace;
752fde44 1020fail:
c24ff998 1021 color_fprintf(fp, PERF_COLOR_RED,
752fde44
ACM		 1022 "WARNING: not enough memory, dropping samples!\n");
1023 return NULL;
1024}
1025
84486caa
ACM		 1026
1027void syscall_arg__set_ret_scnprintf(struct syscall_arg *arg,
7ee57434 1028 size_t (*ret_scnprintf)(char *bf, size_t size, struct syscall_arg *arg))
84486caa
ACM		 1029{
1030 struct thread_trace *ttrace = thread__priv(arg->thread);
1031
1032 ttrace->ret_scnprintf = ret_scnprintf;
1033}
1034
598d02c5
SF		 1035#define TRACE_PFMAJ (1 << 0)
1036#define TRACE_PFMIN (1 << 1)
1037
e4d44e83
ACM		 1038static const size_t trace__entry_str_size = 2048;
1039
d7e13484 1040static struct file *thread_trace__files_entry(struct thread_trace *ttrace, int fd)
75b757ca 1041{
f4a74fcb
ACM		 1042 if (fd > ttrace->files.max) {
1043 struct file *nfiles = realloc(ttrace->files.table, (fd + 1) * sizeof(struct file));
75b757ca 1044
f4a74fcb 1045 if (nfiles == NULL)
d7e13484 1046 return NULL;
75b757ca 1047
f4a74fcb
ACM		 1048 if (ttrace->files.max != -1) {
1049 memset(nfiles + ttrace->files.max + 1, 0,
1050 (fd - ttrace->files.max) * sizeof(struct file));
75b757ca 1051 } else {
f4a74fcb 1052 memset(nfiles, 0, (fd + 1) * sizeof(struct file));
75b757ca
ACM		 1053 }
1054
f4a74fcb
ACM		 1055 ttrace->files.table = nfiles;
1056 ttrace->files.max = fd;
75b757ca
ACM		 1057 }
1058
d7e13484
ACM		 1059 return ttrace->files.table + fd;
1060}
1061
2d473389
ACM		 1062struct file *thread__files_entry(struct thread *thread, int fd)
1063{
1064 return thread_trace__files_entry(thread__priv(thread), fd);
1065}
1066
d7e13484
ACM		 1067static int trace__set_fd_pathname(struct thread *thread, int fd, const char *pathname)
1068{
1069 struct thread_trace *ttrace = thread__priv(thread);
1070 struct file *file = thread_trace__files_entry(ttrace, fd);
1071
1072 if (file != NULL) {
4bcc4cff
ACM		 1073 struct stat st;
1074 if (stat(pathname, &st) == 0)
1075 file->dev_maj = major(st.st_rdev);
d7e13484
ACM		 1076 file->pathname = strdup(pathname);
1077 if (file->pathname)
1078 return 0;
1079 }
75b757ca 1080
d7e13484 1081 return -1;
75b757ca
ACM		 1082}
1083
97119f37
ACM		 1084static int thread__read_fd_path(struct thread *thread, int fd)
1085{
1086 char linkname[PATH_MAX], pathname[PATH_MAX];
1087 struct stat st;
1088 int ret;
1089
1090 if (thread->pid_ == thread->tid) {
1091 scnprintf(linkname, sizeof(linkname),
1092 "/proc/%d/fd/%d", thread->pid_, fd);
1093 } else {
1094 scnprintf(linkname, sizeof(linkname),
1095 "/proc/%d/task/%d/fd/%d", thread->pid_, thread->tid, fd);
1096 }
1097
1098 if (lstat(linkname, &st) < 0 || st.st_size + 1 > (off_t)sizeof(pathname))
1099 return -1;
1100
1101 ret = readlink(linkname, pathname, sizeof(pathname));
1102
1103 if (ret < 0 || ret > st.st_size)
1104 return -1;
1105
1106 pathname[ret] = '\0';
1107 return trace__set_fd_pathname(thread, fd, pathname);
1108}
1109
c522739d
ACM		 1110static const char *thread__fd_path(struct thread *thread, int fd,
1111 struct trace *trace)
75b757ca 1112{
89dceb22 1113 struct thread_trace *ttrace = thread__priv(thread);
75b757ca
ACM		 1114
1115 if (ttrace == NULL)
1116 return NULL;
1117
1118 if (fd < 0)
1119 return NULL;
1120
f4a74fcb 1121 if ((fd > ttrace->files.max || ttrace->files.table[fd].pathname == NULL)) {
c522739d
ACM		 1122 if (!trace->live)
1123 return NULL;
1124 ++trace->stats.proc_getname;
cdcd1e6b 1125 if (thread__read_fd_path(thread, fd))
c522739d
ACM		 1126 return NULL;
1127 }
75b757ca 1128
f4a74fcb 1129 return ttrace->files.table[fd].pathname;
75b757ca
ACM		 1130}
1131
fc65eb82 1132size_t syscall_arg__scnprintf_fd(char *bf, size_t size, struct syscall_arg *arg)
75b757ca
ACM		 1133{
1134 int fd = arg->val;
1135 size_t printed = scnprintf(bf, size, "%d", fd);
c522739d 1136 const char *path = thread__fd_path(arg->thread, fd, arg->trace);
75b757ca
ACM		 1137
1138 if (path)
1139 printed += scnprintf(bf + printed, size - printed, "<%s>", path);
1140
1141 return printed;
1142}
1143
0a2f7540
ACM		 1144size_t pid__scnprintf_fd(struct trace *trace, pid_t pid, int fd, char *bf, size_t size)
1145{
1146 size_t printed = scnprintf(bf, size, "%d", fd);
1147 struct thread *thread = machine__find_thread(trace->host, pid, pid);
1148
1149 if (thread) {
1150 const char *path = thread__fd_path(thread, fd, trace);
1151
1152 if (path)
1153 printed += scnprintf(bf + printed, size - printed, "<%s>", path);
1154
1155 thread__put(thread);
1156 }
1157
1158 return printed;
1159}
1160
75b757ca
ACM		 1161static size_t syscall_arg__scnprintf_close_fd(char *bf, size_t size,
1162 struct syscall_arg *arg)
1163{
1164 int fd = arg->val;
1165 size_t printed = syscall_arg__scnprintf_fd(bf, size, arg);
89dceb22 1166 struct thread_trace *ttrace = thread__priv(arg->thread);
75b757ca 1167
f4a74fcb
ACM		 1168 if (ttrace && fd >= 0 && fd <= ttrace->files.max)
1169 zfree(&ttrace->files.table[fd].pathname);
75b757ca
ACM		 1170
1171 return printed;
1172}
1173
f994592d
ACM		 1174static void thread__set_filename_pos(struct thread *thread, const char *bf,
1175 unsigned long ptr)
1176{
1177 struct thread_trace *ttrace = thread__priv(thread);
1178
1179 ttrace->filename.ptr = ptr;
1180 ttrace->filename.entry_str_pos = bf - ttrace->entry_str;
1181}
1182
75d1e306
ACM		 1183static size_t syscall_arg__scnprintf_augmented_string(struct syscall_arg *arg, char *bf, size_t size)
1184{
1185 struct augmented_arg *augmented_arg = arg->augmented.args;
1186
721f5326 1187 return scnprintf(bf, size, "\"%.*s\"", augmented_arg->size, augmented_arg->value);
75d1e306
ACM		 1188}
1189
f994592d
ACM		 1190static size_t syscall_arg__scnprintf_filename(char *bf, size_t size,
1191 struct syscall_arg *arg)
1192{
1193 unsigned long ptr = arg->val;
1194
75d1e306
ACM		 1195 if (arg->augmented.args)
1196 return syscall_arg__scnprintf_augmented_string(arg, bf, size);
1197
f994592d
ACM		 1198 if (!arg->trace->vfs_getname)
1199 return scnprintf(bf, size, "%#x", ptr);
1200
1201 thread__set_filename_pos(arg->thread, bf, ptr);
1202 return 0;
1203}
1204
ae9ed035
ACM		 1205static bool trace__filter_duration(struct trace *trace, double t)
1206{
1207 return t < (trace->duration_filter * NSEC_PER_MSEC);
1208}
1209
fd2b2975 1210static size_t __trace__fprintf_tstamp(struct trace *trace, u64 tstamp, FILE *fp)
752fde44
ACM		 1211{
1212 double ts = (double)(tstamp - trace->base_time) / NSEC_PER_MSEC;
1213
60c907ab 1214 return fprintf(fp, "%10.3f ", ts);
752fde44
ACM		 1215}
1216
fd2b2975
ACM		 1217/*
1218 * We're handling tstamp=0 as an undefined tstamp, i.e. like when we are
1219 * using ttrace->entry_time for a thread that receives a sys_exit without
1220 * first having received a sys_enter ("poll" issued before tracing session
1221 * starts, lost sys_enter exit due to ring buffer overflow).
1222 */
1223static size_t trace__fprintf_tstamp(struct trace *trace, u64 tstamp, FILE *fp)
1224{
1225 if (tstamp > 0)
1226 return __trace__fprintf_tstamp(trace, tstamp, fp);
1227
1228 return fprintf(fp, " ? ");
1229}
1230
f15eb531 1231static bool done = false;
ba209f85 1232static bool interrupted = false;
f15eb531 1233
ba209f85 1234static void sig_handler(int sig)
f15eb531
NK		 1235{
1236 done = true;
ba209f85 1237 interrupted = sig == SIGINT;
f15eb531
NK		 1238}
1239
6dcbd212 1240static size_t trace__fprintf_comm_tid(struct trace *trace, struct thread *thread, FILE *fp)
752fde44 1241{
6dcbd212 1242 size_t printed = 0;
752fde44 1243
50c95cbd
ACM		 1244 if (trace->multiple_threads) {
1245 if (trace->show_comm)
1902efe7 1246 printed += fprintf(fp, "%.14s/", thread__comm_str(thread));
38051234 1247 printed += fprintf(fp, "%d ", thread->tid);
50c95cbd 1248 }
752fde44
ACM		 1249
1250 return printed;
1251}
1252
6dcbd212
ACM		 1253static size_t trace__fprintf_entry_head(struct trace *trace, struct thread *thread,
1254 u64 duration, bool duration_calculated, u64 tstamp, FILE *fp)
1255{
b036146f
ACM		 1256 size_t printed = 0;
1257
1258 if (trace->show_tstamp)
1259 printed = trace__fprintf_tstamp(trace, tstamp, fp);
42e4a52d
ACM		 1260 if (trace->show_duration)
1261 printed += fprintf_duration(duration, duration_calculated, fp);
6dcbd212
ACM		 1262 return printed + trace__fprintf_comm_tid(trace, thread, fp);
1263}
1264
c24ff998 1265static int trace__process_event(struct trace *trace, struct machine *machine,
162f0bef 1266 union perf_event *event, struct perf_sample *sample)
752fde44
ACM		 1267{
1268 int ret = 0;
1269
1270 switch (event->header.type) {
1271 case PERF_RECORD_LOST:
c24ff998 1272 color_fprintf(trace->output, PERF_COLOR_RED,
752fde44 1273 "LOST %" PRIu64 " events!\n", event->lost.lost);
162f0bef 1274 ret = machine__process_lost_event(machine, event, sample);
3ed5ca2e 1275 break;
752fde44 1276 default:
162f0bef 1277 ret = machine__process_event(machine, event, sample);
752fde44
ACM		 1278 break;
1279 }
1280
1281 return ret;
1282}
1283
c24ff998 1284static int trace__tool_process(struct perf_tool *tool,
752fde44 1285 union perf_event *event,
162f0bef 1286 struct perf_sample *sample,
752fde44
ACM		 1287 struct machine *machine)
1288{
c24ff998 1289 struct trace *trace = container_of(tool, struct trace, tool);
162f0bef 1290 return trace__process_event(trace, machine, event, sample);
752fde44
ACM		 1291}
1292
caf8a0d0
ACM		 1293static char *trace__machine__resolve_kernel_addr(void *vmachine, unsigned long long *addrp, char **modp)
1294{
1295 struct machine *machine = vmachine;
1296
1297 if (machine->kptr_restrict_warned)
1298 return NULL;
1299
1300 if (symbol_conf.kptr_restrict) {
1301 pr_warning("Kernel address maps (/proc/{kallsyms,modules}) are restricted.\n\n"
1302 "Check /proc/sys/kernel/kptr_restrict.\n\n"
1303 "Kernel samples will not be resolved.\n");
1304 machine->kptr_restrict_warned = true;
1305 return NULL;
1306 }
1307
1308 return machine__resolve_kernel_addr(vmachine, addrp, modp);
1309}
1310
752fde44
ACM		 1311static int trace__symbols_init(struct trace *trace, struct perf_evlist *evlist)
1312{
0a7e6d1b 1313 int err = symbol__init(NULL);
752fde44
ACM		 1314
1315 if (err)
1316 return err;
1317
8fb598e5
DA		 1318 trace->host = machine__new_host();
1319 if (trace->host == NULL)
1320 return -ENOMEM;
752fde44 1321
cbd5c178
AV		 1322 err = trace_event__register_resolver(trace->host, trace__machine__resolve_kernel_addr);
1323 if (err < 0)
1324 goto out;
706c3da4 1325
a33fbd56 1326 err = __machine__synthesize_threads(trace->host, &trace->tool, &trace->opts.target,
9d9cad76 1327 evlist->threads, trace__tool_process, false,
3fcb10e4 1328 1);
cbd5c178 1329out:
752fde44
ACM		 1330 if (err)
1331 symbol__exit();
1332
1333 return err;
1334}
1335
33974a41
AV		 1336static void trace__symbols__exit(struct trace *trace)
1337{
1338 machine__exit(trace->host);
1339 trace->host = NULL;
1340
1341 symbol__exit();
1342}
1343
5e58fcfa 1344static int syscall__alloc_arg_fmts(struct syscall *sc, int nr_args)
13d4ff3e 1345{
5e58fcfa 1346 int idx;
13d4ff3e 1347
332337da
ACM		 1348 if (nr_args == 6 && sc->fmt && sc->fmt->nr_args != 0)
1349 nr_args = sc->fmt->nr_args;
1350
5e58fcfa 1351 sc->arg_fmt = calloc(nr_args, sizeof(*sc->arg_fmt));
82d4a110 1352 if (sc->arg_fmt == NULL)
13d4ff3e
ACM		 1353 return -1;
1354
5e58fcfa
ACM		 1355 for (idx = 0; idx < nr_args; ++idx) {
1356 if (sc->fmt)
82d4a110 1357 sc->arg_fmt[idx] = sc->fmt->arg[idx];
5e58fcfa 1358 }
82d4a110 1359
5e58fcfa
ACM		 1360 sc->nr_args = nr_args;
1361 return 0;
1362}
1363
1364static int syscall__set_arg_fmts(struct syscall *sc)
1365{
2c92f982 1366 struct tep_format_field *field, *last_field = NULL;
5e58fcfa
ACM		 1367 int idx = 0, len;
1368
1369 for (field = sc->args; field; field = field->next, ++idx) {
7a983a0f
ACM		 1370 last_field = field;
1371
5e58fcfa
ACM		 1372 if (sc->fmt && sc->fmt->arg[idx].scnprintf)
1373 continue;
1f115cb7 1374
82d4a110 1375 if (strcmp(field->type, "const char *") == 0 &&
12f3ca4f
ACM		 1376 (strcmp(field->name, "filename") == 0 ||
1377 strcmp(field->name, "path") == 0 ||
1378 strcmp(field->name, "pathname") == 0))
82d4a110 1379 sc->arg_fmt[idx].scnprintf = SCA_FILENAME;
ce05539f
ACM		 1380 else if ((field->flags & TEP_FIELD_IS_POINTER) || strstr(field->name, "addr"))
1381 sc->arg_fmt[idx].scnprintf = SCA_PTR;
d1d438a3 1382 else if (strcmp(field->type, "pid_t") == 0)
82d4a110 1383 sc->arg_fmt[idx].scnprintf = SCA_PID;
ba2f22cf 1384 else if (strcmp(field->type, "umode_t") == 0)
82d4a110 1385 sc->arg_fmt[idx].scnprintf = SCA_MODE_T;
b6565c90
ACM		 1386 else if ((strcmp(field->type, "int") == 0 ||
1387 strcmp(field->type, "unsigned int") == 0 ||
1388 strcmp(field->type, "long") == 0) &&
1389 (len = strlen(field->name)) >= 2 &&
1390 strcmp(field->name + len - 2, "fd") == 0) {
1391 /*
1392 * /sys/kernel/tracing/events/syscalls/sys_enter*
1393 * egrep 'field:.*fd;' .../format|sed -r 's/.*field:([a-z ]+) [a-z_]*fd.+/\1/g'|sort|uniq -c
1394 * 65 int
1395 * 23 unsigned int
1396 * 7 unsigned long
1397 */
82d4a110 1398 sc->arg_fmt[idx].scnprintf = SCA_FD;
b6565c90 1399 }
13d4ff3e
ACM		 1400 }
1401
7a983a0f
ACM		 1402 if (last_field)
1403 sc->args_size = last_field->offset + last_field->size;
1404
13d4ff3e
ACM		 1405 return 0;
1406}
1407
514f1c67
ACM		 1408static int trace__read_syscall_info(struct trace *trace, int id)
1409{
1410 char tp_name[128];
1411 struct syscall *sc;
fd0db102 1412 const char *name = syscalltbl__name(trace->sctbl, id);
3a531260
ACM		 1413
1414 if (name == NULL)
1415 return -1;
514f1c67
ACM		 1416
1417 if (id > trace->syscalls.max) {
1418 struct syscall *nsyscalls = realloc(trace->syscalls.table, (id + 1) * sizeof(*sc));
1419
1420 if (nsyscalls == NULL)
1421 return -1;
1422
1423 if (trace->syscalls.max != -1) {
1424 memset(nsyscalls + trace->syscalls.max + 1, 0,
1425 (id - trace->syscalls.max) * sizeof(*sc));
1426 } else {
1427 memset(nsyscalls, 0, (id + 1) * sizeof(*sc));
1428 }
1429
1430 trace->syscalls.table = nsyscalls;
1431 trace->syscalls.max = id;
1432 }
1433
1434 sc = trace->syscalls.table + id;
3a531260 1435 sc->name = name;
2ae3a312 1436
3a531260 1437 sc->fmt = syscall_fmt__find(sc->name);
514f1c67 1438
aec1930b 1439 snprintf(tp_name, sizeof(tp_name), "sys_enter_%s", sc->name);
97978b3e 1440 sc->tp_format = trace_event__tp_format("syscalls", tp_name);
aec1930b 1441
8dd2a131 1442 if (IS_ERR(sc->tp_format) && sc->fmt && sc->fmt->alias) {
aec1930b 1443 snprintf(tp_name, sizeof(tp_name), "sys_enter_%s", sc->fmt->alias);
97978b3e 1444 sc->tp_format = trace_event__tp_format("syscalls", tp_name);
aec1930b 1445 }
514f1c67 1446
5e58fcfa
ACM		 1447 if (syscall__alloc_arg_fmts(sc, IS_ERR(sc->tp_format) ? 6 : sc->tp_format->format.nr_fields))
1448 return -1;
1449
8dd2a131 1450 if (IS_ERR(sc->tp_format))
13d4ff3e
ACM		 1451 return -1;
1452
f208bd8d 1453 sc->args = sc->tp_format->format.fields;
c42de706
TS		 1454 /*
1455 * We need to check and discard the first variable '__syscall_nr'
1456 * or 'nr' that mean the syscall number. It is needless here.
1457 * So drop '__syscall_nr' or 'nr' field but does not exist on older kernels.
1458 */
1459 if (sc->args && (!strcmp(sc->args->name, "__syscall_nr") || !strcmp(sc->args->name, "nr"))) {
f208bd8d
ACM		 1460 sc->args = sc->args->next;
1461 --sc->nr_args;
1462 }
1463
5089f20e 1464 sc->is_exit = !strcmp(name, "exit_group") || !strcmp(name, "exit");
6a648b53 1465 sc->is_open = !strcmp(name, "open") || !strcmp(name, "openat");
5089f20e 1466
13d4ff3e 1467 return syscall__set_arg_fmts(sc);
514f1c67
ACM		 1468}
1469
d0cc439b
ACM		 1470static int trace__validate_ev_qualifier(struct trace *trace)
1471{
8b3ce757 1472 int err = 0, i;
27702bcf 1473 size_t nr_allocated;
d0cc439b
ACM		 1474 struct str_node *pos;
1475
8b3ce757
ACM		 1476 trace->ev_qualifier_ids.nr = strlist__nr_entries(trace->ev_qualifier);
1477 trace->ev_qualifier_ids.entries = malloc(trace->ev_qualifier_ids.nr *
1478 sizeof(trace->ev_qualifier_ids.entries[0]));
1479
1480 if (trace->ev_qualifier_ids.entries == NULL) {
1481 fputs("Error:\tNot enough memory for allocating events qualifier ids\n",
1482 trace->output);
1483 err = -EINVAL;
1484 goto out;
1485 }
1486
27702bcf 1487 nr_allocated = trace->ev_qualifier_ids.nr;
8b3ce757
ACM		 1488 i = 0;
1489
602a1f4d 1490 strlist__for_each_entry(pos, trace->ev_qualifier) {
d0cc439b 1491 const char *sc = pos->s;
27702bcf 1492 int id = syscalltbl__id(trace->sctbl, sc), match_next = -1;
d0cc439b 1493
8b3ce757 1494 if (id < 0) {
27702bcf
ACM		 1495 id = syscalltbl__strglobmatch_first(trace->sctbl, sc, &match_next);
1496 if (id >= 0)
1497 goto matches;
1498
d0cc439b
ACM		 1499 if (err == 0) {
1500 fputs("Error:\tInvalid syscall ", trace->output);
1501 err = -EINVAL;
1502 } else {
1503 fputs(", ", trace->output);
1504 }
1505
1506 fputs(sc, trace->output);
1507 }
27702bcf 1508matches:
8b3ce757 1509 trace->ev_qualifier_ids.entries[i++] = id;
27702bcf
ACM		 1510 if (match_next == -1)
1511 continue;
1512
1513 while (1) {
1514 id = syscalltbl__strglobmatch_next(trace->sctbl, sc, &match_next);
1515 if (id < 0)
1516 break;
1517 if (nr_allocated == trace->ev_qualifier_ids.nr) {
1518 void *entries;
1519
1520 nr_allocated += 8;
1521 entries = realloc(trace->ev_qualifier_ids.entries,
1522 nr_allocated * sizeof(trace->ev_qualifier_ids.entries[0]));
1523 if (entries == NULL) {
1524 err = -ENOMEM;
1525 fputs("\nError:\t Not enough memory for parsing\n", trace->output);
1526 goto out_free;
1527 }
1528 trace->ev_qualifier_ids.entries = entries;
1529 }
1530 trace->ev_qualifier_ids.nr++;
1531 trace->ev_qualifier_ids.entries[i++] = id;
1532 }
d0cc439b
ACM		 1533 }
1534
1535 if (err < 0) {
1536 fputs("\nHint:\ttry 'perf list syscalls:sys_enter_*'"
1537 "\nHint:\tand: 'man syscalls'\n", trace->output);
27702bcf 1538out_free:
8b3ce757
ACM		 1539 zfree(&trace->ev_qualifier_ids.entries);
1540 trace->ev_qualifier_ids.nr = 0;
d0cc439b 1541 }
8b3ce757 1542out:
d0cc439b
ACM		 1543 return err;
1544}
1545
55d43bca
DA		 1546/*
1547 * args is to be interpreted as a series of longs but we need to handle
1548 * 8-byte unaligned accesses. args points to raw_data within the event
1549 * and raw_data is guaranteed to be 8-byte unaligned because it is
1550 * preceded by raw_size which is a u32. So we need to copy args to a temp
1551 * variable to read it. Most notably this avoids extended load instructions
1552 * on unaligned addresses
1553 */
325f5091 1554unsigned long syscall_arg__val(struct syscall_arg *arg, u8 idx)
f9f83b33
ACM		 1555{
1556 unsigned long val;
325f5091 1557 unsigned char *p = arg->args + sizeof(unsigned long) * idx;
f9f83b33
ACM		 1558
1559 memcpy(&val, p, sizeof(val));
1560 return val;
1561}
1562
c51bdfec
ACM		 1563static size_t syscall__scnprintf_name(struct syscall *sc, char *bf, size_t size,
1564 struct syscall_arg *arg)
1565{
1566 if (sc->arg_fmt && sc->arg_fmt[arg->idx].name)
1567 return scnprintf(bf, size, "%s: ", sc->arg_fmt[arg->idx].name);
1568
1569 return scnprintf(bf, size, "arg%d: ", arg->idx);
1570}
1571
496fd346
ACM		 1572/*
1573 * Check if the value is in fact zero, i.e. mask whatever needs masking, such
1574 * as mount 'flags' argument that needs ignoring some magic flag, see comment
1575 * in tools/perf/trace/beauty/mount_flags.c
1576 */
1577static unsigned long syscall__mask_val(struct syscall *sc, struct syscall_arg *arg, unsigned long val)
1578{
1579 if (sc->arg_fmt && sc->arg_fmt[arg->idx].mask_val)
1580 return sc->arg_fmt[arg->idx].mask_val(arg, val);
1581
1582 return val;
1583}
1584
d032d79e
ACM		 1585static size_t syscall__scnprintf_val(struct syscall *sc, char *bf, size_t size,
1586 struct syscall_arg *arg, unsigned long val)
1587{
1588 if (sc->arg_fmt && sc->arg_fmt[arg->idx].scnprintf) {
1589 arg->val = val;
1590 if (sc->arg_fmt[arg->idx].parm)
1591 arg->parm = sc->arg_fmt[arg->idx].parm;
1592 return sc->arg_fmt[arg->idx].scnprintf(bf, size, arg);
1593 }
1594 return scnprintf(bf, size, "%ld", val);
1595}
1596
752fde44 1597static size_t syscall__scnprintf_args(struct syscall *sc, char *bf, size_t size,
7a983a0f
ACM		 1598 unsigned char *args, void *augmented_args, int augmented_args_size,
1599 struct trace *trace, struct thread *thread)
514f1c67 1600{
514f1c67 1601 size_t printed = 0;
55d43bca 1602 unsigned long val;
d032d79e
ACM		 1603 u8 bit = 1;
1604 struct syscall_arg arg = {
1605 .args = args,
7a983a0f
ACM		 1606 .augmented = {
1607 .size = augmented_args_size,
1608 .args = augmented_args,
1609 },
d032d79e
ACM		 1610 .idx = 0,
1611 .mask = 0,
1612 .trace = trace,
1613 .thread = thread,
c65c83ff 1614 .show_string_prefix = trace->show_string_prefix,
d032d79e 1615 };
84486caa
ACM		 1616 struct thread_trace *ttrace = thread__priv(thread);
1617
1618 /*
1619 * Things like fcntl will set this in its 'cmd' formatter to pick the
1620 * right formatter for the return value (an fd? file flags?), which is
1621 * not needed for syscalls that always return a given type, say an fd.
1622 */
1623 ttrace->ret_scnprintf = NULL;
514f1c67 1624
f208bd8d 1625 if (sc->args != NULL) {
2c92f982 1626 struct tep_format_field *field;
6e7eeb51 1627
f208bd8d 1628 for (field = sc->args; field;
01533e97
ACM		 1629 field = field->next, ++arg.idx, bit <<= 1) {
1630 if (arg.mask & bit)
6e7eeb51 1631 continue;
55d43bca 1632
f9f83b33 1633 val = syscall_arg__val(&arg, arg.idx);
496fd346
ACM		 1634 /*
1635 * Some syscall args need some mask, most don't and
1636 * return val untouched.
1637 */
1638 val = syscall__mask_val(sc, &arg, val);
55d43bca 1639
4aa58232
ACM		 1640 /*
1641 * Suppress this argument if its value is zero and
1642 * and we don't have a string associated in an
1643 * strarray for it.
1644 */
55d43bca 1645 if (val == 0 &&
e7c634fc 1646 !trace->show_zeros &&
82d4a110 1647 !(sc->arg_fmt &&
d47737d5
ACM		 1648 (sc->arg_fmt[arg.idx].show_zero ||
1649 sc->arg_fmt[arg.idx].scnprintf == SCA_STRARRAY ||
82d4a110
ACM		 1650 sc->arg_fmt[arg.idx].scnprintf == SCA_STRARRAYS) &&
1651 sc->arg_fmt[arg.idx].parm))
22ae5cf1
ACM		 1652 continue;
1653
9d6dc178
ACM		 1654 printed += scnprintf(bf + printed, size - printed, "%s", printed ? ", " : "");
1655
1656 if (trace->show_arg_names)
1657 printed += scnprintf(bf + printed, size - printed, "%s: ", field->name);
1658
d032d79e 1659 printed += syscall__scnprintf_val(sc, bf + printed, size - printed, &arg, val);
514f1c67 1660 }
4c4d6e51
ACM		 1661 } else if (IS_ERR(sc->tp_format)) {
1662 /*
1663 * If we managed to read the tracepoint /format file, then we
1664 * may end up not having any args, like with gettid(), so only
1665 * print the raw args when we didn't manage to read it.
1666 */
332337da 1667 while (arg.idx < sc->nr_args) {
d032d79e
ACM		 1668 if (arg.mask & bit)
1669 goto next_arg;
1670 val = syscall_arg__val(&arg, arg.idx);
c51bdfec
ACM		 1671 if (printed)
1672 printed += scnprintf(bf + printed, size - printed, ", ");
1673 printed += syscall__scnprintf_name(sc, bf + printed, size - printed, &arg);
d032d79e
ACM		 1674 printed += syscall__scnprintf_val(sc, bf + printed, size - printed, &arg, val);
1675next_arg:
1676 ++arg.idx;
1677 bit <<= 1;
514f1c67
ACM		 1678 }
1679 }
1680
1681 return printed;
1682}
1683
ba3d7dee 1684typedef int (*tracepoint_handler)(struct trace *trace, struct perf_evsel *evsel,
0c82adcf 1685 union perf_event *event,
ba3d7dee
ACM		 1686 struct perf_sample *sample);
1687
1688static struct syscall *trace__syscall_info(struct trace *trace,
bf2575c1 1689 struct perf_evsel *evsel, int id)
ba3d7dee 1690{
ba3d7dee
ACM		 1691
1692 if (id < 0) {
adaa18bf
ACM		 1693
1694 /*
1695 * XXX: Noticed on x86_64, reproduced as far back as 3.0.36, haven't tried
1696 * before that, leaving at a higher verbosity level till that is
1697 * explained. Reproduced with plain ftrace with:
1698 *
1699 * echo 1 > /t/events/raw_syscalls/sys_exit/enable
1700 * grep "NR -1 " /t/trace_pipe
1701 *
1702 * After generating some load on the machine.
1703 */
1704 if (verbose > 1) {
1705 static u64 n;
1706 fprintf(trace->output, "Invalid syscall %d id, skipping (%s, %" PRIu64 ") ...\n",
1707 id, perf_evsel__name(evsel), ++n);
1708 }
ba3d7dee
ACM		 1709 return NULL;
1710 }
1711
1712 if ((id > trace->syscalls.max || trace->syscalls.table[id].name == NULL) &&
1713 trace__read_syscall_info(trace, id))
1714 goto out_cant_read;
1715
1716 if ((id > trace->syscalls.max || trace->syscalls.table[id].name == NULL))
1717 goto out_cant_read;
1718
1719 return &trace->syscalls.table[id];
1720
1721out_cant_read:
bb963e16 1722 if (verbose > 0) {
7c304ee0
ACM		 1723 fprintf(trace->output, "Problems reading syscall %d", id);
1724 if (id <= trace->syscalls.max && trace->syscalls.table[id].name != NULL)
1725 fprintf(trace->output, "(%s)", trace->syscalls.table[id].name);
1726 fputs(" information\n", trace->output);
1727 }
ba3d7dee
ACM		 1728 return NULL;
1729}
1730
bf2575c1
DA		 1731static void thread__update_stats(struct thread_trace *ttrace,
1732 int id, struct perf_sample *sample)
1733{
1734 struct int_node *inode;
1735 struct stats *stats;
1736 u64 duration = 0;
1737
1738 inode = intlist__findnew(ttrace->syscall_stats, id);
1739 if (inode == NULL)
1740 return;
1741
1742 stats = inode->priv;
1743 if (stats == NULL) {
1744 stats = malloc(sizeof(struct stats));
1745 if (stats == NULL)
1746 return;
1747 init_stats(stats);
1748 inode->priv = stats;
1749 }
1750
1751 if (ttrace->entry_time && sample->time > ttrace->entry_time)
1752 duration = sample->time - ttrace->entry_time;
1753
1754 update_stats(stats, duration);
1755}
1756
522283fe 1757static int trace__printf_interrupted_entry(struct trace *trace)
e596663e
ACM		 1758{
1759 struct thread_trace *ttrace;
e596663e
ACM		 1760 size_t printed;
1761
0a6545bd 1762 if (trace->failure_only || trace->current == NULL)
e596663e
ACM		 1763 return 0;
1764
1765 ttrace = thread__priv(trace->current);
1766
1767 if (!ttrace->entry_pending)
1768 return 0;
1769
522283fe 1770 printed = trace__fprintf_entry_head(trace, trace->current, 0, false, ttrace->entry_time, trace->output);
4b8a240e 1771 printed += fprintf(trace->output, ")%-*s ...\n", trace->args_alignment, ttrace->entry_str);
e596663e
ACM		 1772 ttrace->entry_pending = false;
1773
5067a8cd
ACM		 1774 ++trace->nr_events_printed;
1775
e596663e
ACM		 1776 return printed;
1777}
1778
591421e1
ACM		 1779static int trace__fprintf_sample(struct trace *trace, struct perf_evsel *evsel,
1780 struct perf_sample *sample, struct thread *thread)
1781{
1782 int printed = 0;
1783
1784 if (trace->print_sample) {
1785 double ts = (double)sample->time / NSEC_PER_MSEC;
1786
1787 printed += fprintf(trace->output, "%22s %10.3f %s %d/%d [%d]\n",
1788 perf_evsel__name(evsel), ts,
1789 thread__comm_str(thread),
1790 sample->pid, sample->tid, sample->cpu);
1791 }
1792
1793 return printed;
1794}
1795
b9b6a2ea 1796static void *syscall__augmented_args(struct syscall *sc, struct perf_sample *sample, int *augmented_args_size, int raw_augmented_args_size)
8a041f86
ACM		 1797{
1798 void *augmented_args = NULL;
cd26ea6d
ACM		 1799 /*
1800 * For now with BPF raw_augmented we hook into raw_syscalls:sys_enter
b9b6a2ea
ACM		 1801 * and there we get all 6 syscall args plus the tracepoint common fields
1802 * that gets calculated at the start and the syscall_nr (another long).
1803 * So we check if that is the case and if so don't look after the
1804 * sc->args_size but always after the full raw_syscalls:sys_enter payload,
1805 * which is fixed.
cd26ea6d
ACM		 1806 *
1807 * We'll revisit this later to pass s->args_size to the BPF augmenter
1808 * (now tools/perf/examples/bpf/augmented_raw_syscalls.c, so that it
1809 * copies only what we need for each syscall, like what happens when we
1810 * use syscalls:sys_enter_NAME, so that we reduce the kernel/userspace
1811 * traffic to just what is needed for each syscall.
1812 */
b9b6a2ea 1813 int args_size = raw_augmented_args_size ?: sc->args_size;
8a041f86 1814
cd26ea6d 1815 *augmented_args_size = sample->raw_size - args_size;
8a041f86 1816 if (*augmented_args_size > 0)
cd26ea6d 1817 augmented_args = sample->raw_data + args_size;
8a041f86
ACM		 1818
1819 return augmented_args;
1820}
1821
ba3d7dee 1822static int trace__sys_enter(struct trace *trace, struct perf_evsel *evsel,
0c82adcf 1823 union perf_event *event __maybe_unused,
ba3d7dee
ACM		 1824 struct perf_sample *sample)
1825{
752fde44 1826 char *msg;
ba3d7dee 1827 void *args;
4b8a240e 1828 int printed = 0;
2ae3a312 1829 struct thread *thread;
b91fc39f 1830 int id = perf_evsel__sc_tp_uint(evsel, id, sample), err = -1;
db2da3f8
ACM		 1831 int augmented_args_size = 0;
1832 void *augmented_args = NULL;
bf2575c1 1833 struct syscall *sc = trace__syscall_info(trace, evsel, id);
2ae3a312
ACM		 1834 struct thread_trace *ttrace;
1835
1836 if (sc == NULL)
1837 return -1;
ba3d7dee 1838
8fb598e5 1839 thread = machine__findnew_thread(trace->host, sample->pid, sample->tid);
c24ff998 1840 ttrace = thread__trace(thread, trace->output);
2ae3a312 1841 if (ttrace == NULL)
b91fc39f 1842 goto out_put;
ba3d7dee 1843
591421e1
ACM		 1844 trace__fprintf_sample(trace, evsel, sample, thread);
1845
77170988 1846 args = perf_evsel__sc_tp_ptr(evsel, args, sample);
752fde44
ACM		 1847
1848 if (ttrace->entry_str == NULL) {
e4d44e83 1849 ttrace->entry_str = malloc(trace__entry_str_size);
752fde44 1850 if (!ttrace->entry_str)
b91fc39f 1851 goto out_put;
752fde44
ACM		 1852 }
1853
5cf9c84e 1854 if (!(trace->duration_filter || trace->summary_only || trace->min_stack))
522283fe 1855 trace__printf_interrupted_entry(trace);
db2da3f8
ACM		 1856 /*
1857 * If this is raw_syscalls.sys_enter, then it always comes with the 6 possible
1858 * arguments, even if the syscall being handled, say "openat", uses only 4 arguments
1859 * this breaks syscall__augmented_args() check for augmented args, as we calculate
1860 * syscall->args_size using each syscalls:sys_enter_NAME tracefs format file,
1861 * so when handling, say the openat syscall, we end up getting 6 args for the
1862 * raw_syscalls:sys_enter event, when we expected just 4, we end up mistakenly
1863 * thinking that the extra 2 u64 args are the augmented filename, so just check
1864 * here and avoid using augmented syscalls when the evsel is the raw_syscalls one.
1865 */
1866 if (evsel != trace->syscalls.events.sys_enter)
b9b6a2ea 1867 augmented_args = syscall__augmented_args(sc, sample, &augmented_args_size, trace->raw_augmented_syscalls_args_size);
752fde44
ACM		 1868 ttrace->entry_time = sample->time;
1869 msg = ttrace->entry_str;
e4d44e83 1870 printed += scnprintf(msg + printed, trace__entry_str_size - printed, "%s(", sc->name);
752fde44 1871
e4d44e83 1872 printed += syscall__scnprintf_args(sc, msg + printed, trace__entry_str_size - printed,
db2da3f8 1873 args, augmented_args, augmented_args_size, trace, thread);
752fde44 1874
5089f20e 1875 if (sc->is_exit) {
0a6545bd 1876 if (!(trace->duration_filter || trace->summary_only || trace->failure_only || trace->min_stack)) {
4b8a240e
ACM		 1877 int alignment = 0;
1878
fd2b2975 1879 trace__fprintf_entry_head(trace, thread, 0, false, ttrace->entry_time, trace->output);
4b8a240e
ACM		 1880 printed = fprintf(trace->output, "%s)", ttrace->entry_str);
1881 if (trace->args_alignment > printed)
1882 alignment = trace->args_alignment - printed;
1883 fprintf(trace->output, "%*s= ?\n", alignment, " ");
ae9ed035 1884 }
7f4f8001 1885 } else {
752fde44 1886 ttrace->entry_pending = true;
7f4f8001
ACM		 1887 /* See trace__vfs_getname & trace__sys_exit */
1888 ttrace->filename.pending_open = false;
1889 }
ba3d7dee 1890
f3b623b8
ACM		 1891 if (trace->current != thread) {
1892 thread__put(trace->current);
1893 trace->current = thread__get(thread);
1894 }
b91fc39f
ACM		 1895 err = 0;
1896out_put:
1897 thread__put(thread);
1898 return err;
ba3d7dee
ACM		 1899}
1900
a98392bb
ACM		 1901static int trace__fprintf_sys_enter(struct trace *trace, struct perf_evsel *evsel,
1902 struct perf_sample *sample)
1903{
a98392bb
ACM		 1904 struct thread_trace *ttrace;
1905 struct thread *thread;
f3acd886
ACM		 1906 int id = perf_evsel__sc_tp_uint(evsel, id, sample), err = -1;
1907 struct syscall *sc = trace__syscall_info(trace, evsel, id);
a98392bb 1908 char msg[1024];
7a983a0f
ACM		 1909 void *args, *augmented_args = NULL;
1910 int augmented_args_size;
a98392bb 1911
a98392bb
ACM		 1912 if (sc == NULL)
1913 return -1;
1914
1915 thread = machine__findnew_thread(trace->host, sample->pid, sample->tid);
1916 ttrace = thread__trace(thread, trace->output);
1917 /*
1918 * We need to get ttrace just to make sure it is there when syscall__scnprintf_args()
1919 * and the rest of the beautifiers accessing it via struct syscall_arg touches it.
1920 */
1921 if (ttrace == NULL)
1922 goto out_put;
1923
f3acd886 1924 args = perf_evsel__sc_tp_ptr(evsel, args, sample);
b9b6a2ea 1925 augmented_args = syscall__augmented_args(sc, sample, &augmented_args_size, trace->raw_augmented_syscalls_args_size);
7a983a0f 1926 syscall__scnprintf_args(sc, msg, sizeof(msg), args, augmented_args, augmented_args_size, trace, thread);
a98392bb
ACM		 1927 fprintf(trace->output, "%s", msg);
1928 err = 0;
1929out_put:
1930 thread__put(thread);
1931 return err;
1932}
1933
5cf9c84e
ACM		 1934static int trace__resolve_callchain(struct trace *trace, struct perf_evsel *evsel,
1935 struct perf_sample *sample,
1936 struct callchain_cursor *cursor)
202ff968
ACM		 1937{
1938 struct addr_location al;
3a9e9a47
RB		 1939 int max_stack = evsel->attr.sample_max_stack ?
1940 evsel->attr.sample_max_stack :
1941 trace->max_stack;
4291bf5c 1942 int err;
5cf9c84e 1943
4291bf5c 1944 if (machine__resolve(trace->host, &al, sample) < 0)
5cf9c84e
ACM		 1945 return -1;
1946
4291bf5c
ACM		 1947 err = thread__resolve_callchain(al.thread, cursor, evsel, sample, NULL, NULL, max_stack);
1948 addr_location__put(&al);
1949 return err;
5cf9c84e
ACM		 1950}
1951
1952static int trace__fprintf_callchain(struct trace *trace, struct perf_sample *sample)
1953{
202ff968 1954 /* TODO: user-configurable print_opts */
e20ab86e
ACM		 1955 const unsigned int print_opts = EVSEL__PRINT_SYM |
1956 EVSEL__PRINT_DSO |
1957 EVSEL__PRINT_UNKNOWN_AS_ADDR;
202ff968 1958
d327e60c 1959 return sample__fprintf_callchain(sample, 38, print_opts, &callchain_cursor, trace->output);
202ff968
ACM		 1960}
1961
092bd3cd
HB		 1962static const char *errno_to_name(struct perf_evsel *evsel, int err)
1963{
1964 struct perf_env *env = perf_evsel__env(evsel);
1965 const char *arch_name = perf_env__arch(env);
1966
1967 return arch_syscalls__strerrno(arch_name, err);
1968}
1969
ba3d7dee 1970static int trace__sys_exit(struct trace *trace, struct perf_evsel *evsel,
0c82adcf 1971 union perf_event *event __maybe_unused,
ba3d7dee
ACM		 1972 struct perf_sample *sample)
1973{
2c82c3ad 1974 long ret;
60c907ab 1975 u64 duration = 0;
fd2b2975 1976 bool duration_calculated = false;
2ae3a312 1977 struct thread *thread;
4b8a240e
ACM		 1978 int id = perf_evsel__sc_tp_uint(evsel, id, sample), err = -1, callchain_ret = 0, printed = 0;
1979 int alignment = trace->args_alignment;
bf2575c1 1980 struct syscall *sc = trace__syscall_info(trace, evsel, id);
2ae3a312
ACM		 1981 struct thread_trace *ttrace;
1982
1983 if (sc == NULL)
1984 return -1;
ba3d7dee 1985
8fb598e5 1986 thread = machine__findnew_thread(trace->host, sample->pid, sample->tid);
c24ff998 1987 ttrace = thread__trace(thread, trace->output);
2ae3a312 1988 if (ttrace == NULL)
b91fc39f 1989 goto out_put;
ba3d7dee 1990
591421e1
ACM		 1991 trace__fprintf_sample(trace, evsel, sample, thread);
1992
bf2575c1
DA		 1993 if (trace->summary)
1994 thread__update_stats(ttrace, id, sample);
1995
77170988 1996 ret = perf_evsel__sc_tp_uint(evsel, ret, sample);
ba3d7dee 1997
6a648b53 1998 if (sc->is_open && ret >= 0 && ttrace->filename.pending_open) {
7f4f8001
ACM		 1999 trace__set_fd_pathname(thread, ret, ttrace->filename.name);
2000 ttrace->filename.pending_open = false;
c522739d
ACM		 2001 ++trace->stats.vfs_getname;
2002 }
2003
ae9ed035 2004 if (ttrace->entry_time) {
60c907ab 2005 duration = sample->time - ttrace->entry_time;
ae9ed035
ACM		 2006 if (trace__filter_duration(trace, duration))
2007 goto out;
fd2b2975 2008 duration_calculated = true;
ae9ed035
ACM		 2009 } else if (trace->duration_filter)
2010 goto out;
60c907ab 2011
5cf9c84e
ACM		 2012 if (sample->callchain) {
2013 callchain_ret = trace__resolve_callchain(trace, evsel, sample, &callchain_cursor);
2014 if (callchain_ret == 0) {
2015 if (callchain_cursor.nr < trace->min_stack)
2016 goto out;
2017 callchain_ret = 1;
2018 }
2019 }
2020
0a6545bd 2021 if (trace->summary_only || (ret >= 0 && trace->failure_only))
fd2eabaf
DA		 2022 goto out;
2023
fd2b2975 2024 trace__fprintf_entry_head(trace, thread, duration, duration_calculated, ttrace->entry_time, trace->output);
752fde44
ACM		 2025
2026 if (ttrace->entry_pending) {
4b8a240e 2027 printed = fprintf(trace->output, "%s", ttrace->entry_str);
752fde44 2028 } else {
c24ff998
ACM		 2029 fprintf(trace->output, " ... [");
2030 color_fprintf(trace->output, PERF_COLOR_YELLOW, "continued");
2031 fprintf(trace->output, "]: %s()", sc->name);
752fde44
ACM		 2032 }
2033
4b8a240e
ACM		 2034 printed++; /* the closing ')' */
2035
2036 if (alignment > printed)
2037 alignment -= printed;
2038 else
2039 alignment = 0;
2040
2041 fprintf(trace->output, ")%*s= ", alignment, " ");
2042
da3c9a44 2043 if (sc->fmt == NULL) {
1f63139c
ACM		 2044 if (ret < 0)
2045 goto errno_print;
da3c9a44 2046signed_print:
4b8a240e 2047 fprintf(trace->output, "%ld", ret);
1f63139c
ACM		 2048 } else if (ret < 0) {
2049errno_print: {
942a91ed 2050 char bf[STRERR_BUFSIZE];
c8b5f2c9 2051 const char *emsg = str_error_r(-ret, bf, sizeof(bf)),
092bd3cd 2052 *e = errno_to_name(evsel, -ret);
ba3d7dee 2053
2c83dfae 2054 fprintf(trace->output, "-1 %s (%s)", e, emsg);
1f63139c 2055 }
da3c9a44 2056 } else if (ret == 0 && sc->fmt->timeout)
2c83dfae 2057 fprintf(trace->output, "0 (Timeout)");
84486caa
ACM		 2058 else if (ttrace->ret_scnprintf) {
2059 char bf[1024];
7ee57434
ACM		 2060 struct syscall_arg arg = {
2061 .val = ret,
2062 .thread = thread,
2063 .trace = trace,
2064 };
2065 ttrace->ret_scnprintf(bf, sizeof(bf), &arg);
84486caa 2066 ttrace->ret_scnprintf = NULL;
4b8a240e 2067 fprintf(trace->output, "%s", bf);
84486caa 2068 } else if (sc->fmt->hexret)
4b8a240e 2069 fprintf(trace->output, "%#lx", ret);
11c8e39f
ACM		 2070 else if (sc->fmt->errpid) {
2071 struct thread *child = machine__find_thread(trace->host, ret, ret);
2072
2073 if (child != NULL) {
4b8a240e 2074 fprintf(trace->output, "%ld", ret);
11c8e39f
ACM		 2075 if (child->comm_set)
2076 fprintf(trace->output, " (%s)", thread__comm_str(child));
2077 thread__put(child);
2078 }
2079 } else
da3c9a44 2080 goto signed_print;
ba3d7dee 2081
c24ff998 2082 fputc('\n', trace->output);
566a0885 2083
5067a8cd
ACM		 2084 /*
2085 * We only consider an 'event' for the sake of --max-events a non-filtered
2086 * sys_enter + sys_exit and other tracepoint events.
2087 */
2088 if (++trace->nr_events_printed == trace->max_events && trace->max_events != ULONG_MAX)
2089 interrupted = true;
2090
5cf9c84e
ACM		 2091 if (callchain_ret > 0)
2092 trace__fprintf_callchain(trace, sample);
2093 else if (callchain_ret < 0)
2094 pr_err("Problem processing %s callchain, skipping...\n", perf_evsel__name(evsel));
ae9ed035 2095out:
752fde44 2096 ttrace->entry_pending = false;
b91fc39f
ACM		 2097 err = 0;
2098out_put:
2099 thread__put(thread);
2100 return err;
ba3d7dee
ACM		 2101}
2102
c522739d 2103static int trace__vfs_getname(struct trace *trace, struct perf_evsel *evsel,
0c82adcf 2104 union perf_event *event __maybe_unused,
c522739d
ACM		 2105 struct perf_sample *sample)
2106{
f994592d
ACM		 2107 struct thread *thread = machine__findnew_thread(trace->host, sample->pid, sample->tid);
2108 struct thread_trace *ttrace;
2109 size_t filename_len, entry_str_len, to_move;
2110 ssize_t remaining_space;
2111 char *pos;
7f4f8001 2112 const char *filename = perf_evsel__rawptr(evsel, sample, "pathname");
f994592d
ACM		 2113
2114 if (!thread)
2115 goto out;
2116
2117 ttrace = thread__priv(thread);
2118 if (!ttrace)
ef65e96e 2119 goto out_put;
f994592d 2120
7f4f8001 2121 filename_len = strlen(filename);
39f0e7a8 2122 if (filename_len == 0)
ef65e96e 2123 goto out_put;
7f4f8001
ACM		 2124
2125 if (ttrace->filename.namelen < filename_len) {
2126 char *f = realloc(ttrace->filename.name, filename_len + 1);
2127
2128 if (f == NULL)
ef65e96e 2129 goto out_put;
7f4f8001
ACM		 2130
2131 ttrace->filename.namelen = filename_len;
2132 ttrace->filename.name = f;
2133 }
2134
2135 strcpy(ttrace->filename.name, filename);
2136 ttrace->filename.pending_open = true;
2137
f994592d 2138 if (!ttrace->filename.ptr)
ef65e96e 2139 goto out_put;
f994592d
ACM		 2140
2141 entry_str_len = strlen(ttrace->entry_str);
2142 remaining_space = trace__entry_str_size - entry_str_len - 1; /* \0 */
2143 if (remaining_space <= 0)
ef65e96e 2144 goto out_put;
f994592d 2145
f994592d
ACM		 2146 if (filename_len > (size_t)remaining_space) {
2147 filename += filename_len - remaining_space;
2148 filename_len = remaining_space;
2149 }
2150
2151 to_move = entry_str_len - ttrace->filename.entry_str_pos + 1; /* \0 */
2152 pos = ttrace->entry_str + ttrace->filename.entry_str_pos;
2153 memmove(pos + filename_len, pos, to_move);
2154 memcpy(pos, filename, filename_len);
2155
2156 ttrace->filename.ptr = 0;
2157 ttrace->filename.entry_str_pos = 0;
ef65e96e
ACM		 2158out_put:
2159 thread__put(thread);
f994592d 2160out:
c522739d
ACM		 2161 return 0;
2162}
2163
1302d88e 2164static int trace__sched_stat_runtime(struct trace *trace, struct perf_evsel *evsel,
0c82adcf 2165 union perf_event *event __maybe_unused,
1302d88e
ACM		 2166 struct perf_sample *sample)
2167{
2168 u64 runtime = perf_evsel__intval(evsel, sample, "runtime");
2169 double runtime_ms = (double)runtime / NSEC_PER_MSEC;
8fb598e5 2170 struct thread *thread = machine__findnew_thread(trace->host,
314add6b
AH		 2171 sample->pid,
2172 sample->tid);
c24ff998 2173 struct thread_trace *ttrace = thread__trace(thread, trace->output);
1302d88e
ACM		 2174
2175 if (ttrace == NULL)
2176 goto out_dump;
2177
2178 ttrace->runtime_ms += runtime_ms;
2179 trace->runtime_ms += runtime_ms;
ef65e96e 2180out_put:
b91fc39f 2181 thread__put(thread);
1302d88e
ACM		 2182 return 0;
2183
2184out_dump:
c24ff998 2185 fprintf(trace->output, "%s: comm=%s,pid=%u,runtime=%" PRIu64 ",vruntime=%" PRIu64 ")\n",
1302d88e
ACM		 2186 evsel->name,
2187 perf_evsel__strval(evsel, sample, "comm"),
2188 (pid_t)perf_evsel__intval(evsel, sample, "pid"),
2189 runtime,
2190 perf_evsel__intval(evsel, sample, "vruntime"));
ef65e96e 2191 goto out_put;
1302d88e
ACM		 2192}
2193
923d0c9a
ACM		 2194static int bpf_output__printer(enum binary_printer_ops op,
2195 unsigned int val, void *extra __maybe_unused, FILE *fp)
1d6c9407 2196{
1d6c9407
WN		 2197 unsigned char ch = (unsigned char)val;
2198
2199 switch (op) {
2200 case BINARY_PRINT_CHAR_DATA:
923d0c9a 2201 return fprintf(fp, "%c", isprint(ch) ? ch : '.');
1d6c9407
WN		 2202 case BINARY_PRINT_DATA_BEGIN:
2203 case BINARY_PRINT_LINE_BEGIN:
2204 case BINARY_PRINT_ADDR:
2205 case BINARY_PRINT_NUM_DATA:
2206 case BINARY_PRINT_NUM_PAD:
2207 case BINARY_PRINT_SEP:
2208 case BINARY_PRINT_CHAR_PAD:
2209 case BINARY_PRINT_LINE_END:
2210 case BINARY_PRINT_DATA_END:
2211 default:
2212 break;
2213 }
923d0c9a
ACM		 2214
2215 return 0;
1d6c9407
WN		 2216}
2217
2218static void bpf_output__fprintf(struct trace *trace,
2219 struct perf_sample *sample)
2220{
923d0c9a
ACM		 2221 binary__fprintf(sample->raw_data, sample->raw_size, 8,
2222 bpf_output__printer, NULL, trace->output);
5067a8cd 2223 ++trace->nr_events_printed;
1d6c9407
WN		 2224}
2225
14a052df
ACM		 2226static int trace__event_handler(struct trace *trace, struct perf_evsel *evsel,
2227 union perf_event *event __maybe_unused,
2228 struct perf_sample *sample)
2229{
a9c5e6c1 2230 struct thread *thread;
7ad35615 2231 int callchain_ret = 0;
a9c5e6c1
ACM		 2232 /*
2233 * Check if we called perf_evsel__disable(evsel) due to, for instance,
2234 * this event's max_events having been hit and this is an entry coming
2235 * from the ring buffer that we should discard, since the max events
2236 * have already been considered/printed.
2237 */
2238 if (evsel->disabled)
2239 return 0;
2240
2241 thread = machine__findnew_thread(trace->host, sample->pid, sample->tid);
7ad35615
ACM		 2242
2243 if (sample->callchain) {
2244 callchain_ret = trace__resolve_callchain(trace, evsel, sample, &callchain_cursor);
2245 if (callchain_ret == 0) {
2246 if (callchain_cursor.nr < trace->min_stack)
2247 goto out;
2248 callchain_ret = 1;
2249 }
2250 }
2251
522283fe 2252 trace__printf_interrupted_entry(trace);
14a052df 2253 trace__fprintf_tstamp(trace, sample->time, trace->output);
0808921a 2254
42e4a52d 2255 if (trace->trace_syscalls && trace->show_duration)
0808921a
ACM		 2256 fprintf(trace->output, "( ): ");
2257
c4191e55
ACM		 2258 if (thread)
2259 trace__fprintf_comm_tid(trace, thread, trace->output);
2260
1cdf618f
ACM		 2261 if (evsel == trace->syscalls.events.augmented) {
2262 int id = perf_evsel__sc_tp_uint(evsel, id, sample);
2263 struct syscall *sc = trace__syscall_info(trace, evsel, id);
2264
2265 if (sc) {
c4191e55
ACM		 2266 fprintf(trace->output, "%s(", sc->name);
2267 trace__fprintf_sys_enter(trace, evsel, sample);
2268 fputc(')', trace->output);
2269 goto newline;
1cdf618f
ACM		 2270 }
2271
2272 /*
2273 * XXX: Not having the associated syscall info or not finding/adding
2274 * the thread should never happen, but if it does...
2275 * fall thru and print it as a bpf_output event.
2276 */
2277 }
2278
0808921a 2279 fprintf(trace->output, "%s:", evsel->name);
14a052df 2280
1d6c9407 2281 if (perf_evsel__is_bpf_output(evsel)) {
1cdf618f 2282 bpf_output__fprintf(trace, sample);
1d6c9407 2283 } else if (evsel->tp_format) {
a98392bb
ACM		 2284 if (strncmp(evsel->tp_format->name, "sys_enter_", 10) ||
2285 trace__fprintf_sys_enter(trace, evsel, sample)) {
2286 event_format__fprintf(evsel->tp_format, sample->cpu,
2287 sample->raw_data, sample->raw_size,
2288 trace->output);
5067a8cd 2289 ++trace->nr_events_printed;
a9c5e6c1
ACM		 2290
2291 if (evsel->max_events != ULONG_MAX && ++evsel->nr_events_printed == evsel->max_events) {
2292 perf_evsel__disable(evsel);
2293 perf_evsel__close(evsel);
2294 }
a98392bb 2295 }
14a052df
ACM		 2296 }
2297
1cdf618f 2298newline:
51125a29 2299 fprintf(trace->output, "\n");
202ff968 2300
7ad35615
ACM		 2301 if (callchain_ret > 0)
2302 trace__fprintf_callchain(trace, sample);
2303 else if (callchain_ret < 0)
2304 pr_err("Problem processing %s callchain, skipping...\n", perf_evsel__name(evsel));
2305out:
a937c665 2306 thread__put(thread);
14a052df
ACM		 2307 return 0;
2308}
2309
598d02c5
SF		 2310static void print_location(FILE *f, struct perf_sample *sample,
2311 struct addr_location *al,
2312 bool print_dso, bool print_sym)
2313{
2314
bb963e16 2315 if ((verbose > 0 || print_dso) && al->map)
598d02c5
SF		 2316 fprintf(f, "%s@", al->map->dso->long_name);
2317
bb963e16 2318 if ((verbose > 0 || print_sym) && al->sym)
4414a3c5 2319 fprintf(f, "%s+0x%" PRIx64, al->sym->name,
598d02c5
SF		 2320 al->addr - al->sym->start);
2321 else if (al->map)
4414a3c5 2322 fprintf(f, "0x%" PRIx64, al->addr);
598d02c5 2323 else
4414a3c5 2324 fprintf(f, "0x%" PRIx64, sample->addr);
598d02c5
SF		 2325}
2326
2327static int trace__pgfault(struct trace *trace,
2328 struct perf_evsel *evsel,
473398a2 2329 union perf_event *event __maybe_unused,
598d02c5
SF		 2330 struct perf_sample *sample)
2331{
2332 struct thread *thread;
598d02c5
SF		 2333 struct addr_location al;
2334 char map_type = 'd';
a2ea67d7 2335 struct thread_trace *ttrace;
b91fc39f 2336 int err = -1;
1df54290 2337 int callchain_ret = 0;
598d02c5
SF		 2338
2339 thread = machine__findnew_thread(trace->host, sample->pid, sample->tid);
1df54290
ACM		 2340
2341 if (sample->callchain) {
2342 callchain_ret = trace__resolve_callchain(trace, evsel, sample, &callchain_cursor);
2343 if (callchain_ret == 0) {
2344 if (callchain_cursor.nr < trace->min_stack)
2345 goto out_put;
2346 callchain_ret = 1;
2347 }
2348 }
2349
a2ea67d7
SF		 2350 ttrace = thread__trace(thread, trace->output);
2351 if (ttrace == NULL)
b91fc39f 2352 goto out_put;
a2ea67d7
SF		 2353
2354 if (evsel->attr.config == PERF_COUNT_SW_PAGE_FAULTS_MAJ)
2355 ttrace->pfmaj++;
2356 else
2357 ttrace->pfmin++;
2358
2359 if (trace->summary_only)
b91fc39f 2360 goto out;
598d02c5 2361
4546263d 2362 thread__find_symbol(thread, sample->cpumode, sample->ip, &al);
598d02c5 2363
fd2b2975 2364 trace__fprintf_entry_head(trace, thread, 0, true, sample->time, trace->output);
598d02c5
SF		 2365
2366 fprintf(trace->output, "%sfault [",
2367 evsel->attr.config == PERF_COUNT_SW_PAGE_FAULTS_MAJ ?
2368 "maj" : "min");
2369
2370 print_location(trace->output, sample, &al, false, true);
2371
2372 fprintf(trace->output, "] => ");
2373
117d3c24 2374 thread__find_symbol(thread, sample->cpumode, sample->addr, &al);
598d02c5
SF		 2375
2376 if (!al.map) {
4546263d 2377 thread__find_symbol(thread, sample->cpumode, sample->addr, &al);
598d02c5
SF		 2378
2379 if (al.map)
2380 map_type = 'x';
2381 else
2382 map_type = '?';
2383 }
2384
2385 print_location(trace->output, sample, &al, true, false);
2386
2387 fprintf(trace->output, " (%c%c)\n", map_type, al.level);
0c3a6ef4 2388
1df54290
ACM		 2389 if (callchain_ret > 0)
2390 trace__fprintf_callchain(trace, sample);
2391 else if (callchain_ret < 0)
2392 pr_err("Problem processing %s callchain, skipping...\n", perf_evsel__name(evsel));
5067a8cd
ACM		 2393
2394 ++trace->nr_events_printed;
b91fc39f
ACM		 2395out:
2396 err = 0;
2397out_put:
2398 thread__put(thread);
2399 return err;
598d02c5
SF		 2400}
2401
e6001980 2402static void trace__set_base_time(struct trace *trace,
8a07a809 2403 struct perf_evsel *evsel,
e6001980
ACM		 2404 struct perf_sample *sample)
2405{
8a07a809
ACM		 2406 /*
2407 * BPF events were not setting PERF_SAMPLE_TIME, so be more robust
2408 * and don't use sample->time unconditionally, we may end up having
2409 * some other event in the future without PERF_SAMPLE_TIME for good
2410 * reason, i.e. we may not be interested in its timestamps, just in
2411 * it taking place, picking some piece of information when it
2412 * appears in our event stream (vfs_getname comes to mind).
2413 */
2414 if (trace->base_time == 0 && !trace->full_time &&
2415 (evsel->attr.sample_type & PERF_SAMPLE_TIME))
e6001980
ACM		 2416 trace->base_time = sample->time;
2417}
2418
6810fc91 2419static int trace__process_sample(struct perf_tool *tool,
0c82adcf 2420 union perf_event *event,
6810fc91
DA		 2421 struct perf_sample *sample,
2422 struct perf_evsel *evsel,
2423 struct machine *machine __maybe_unused)
2424{
2425 struct trace *trace = container_of(tool, struct trace, tool);
aa07df6e 2426 struct thread *thread;
6810fc91
DA		 2427 int err = 0;
2428
744a9719 2429 tracepoint_handler handler = evsel->handler;
6810fc91 2430
aa07df6e
DA		 2431 thread = machine__findnew_thread(trace->host, sample->pid, sample->tid);
2432 if (thread && thread__is_filtered(thread))
ef65e96e 2433 goto out;
bdc89661 2434
e6001980 2435 trace__set_base_time(trace, evsel, sample);
6810fc91 2436
3160565f
DA		 2437 if (handler) {
2438 ++trace->nr_events;
0c82adcf 2439 handler(trace, evsel, event, sample);
3160565f 2440 }
ef65e96e
ACM		 2441out:
2442 thread__put(thread);
6810fc91
DA		 2443 return err;
2444}
2445
1e28fe0a 2446static int trace__record(struct trace *trace, int argc, const char **argv)
5e2485b1
DA		 2447{
2448 unsigned int rec_argc, i, j;
2449 const char **rec_argv;
2450 const char * const record_args[] = {
2451 "record",
2452 "-R",
2453 "-m", "1024",
2454 "-c", "1",
5e2485b1
DA		 2455 };
2456
1e28fe0a
SF		 2457 const char * const sc_args[] = { "-e", };
2458 unsigned int sc_args_nr = ARRAY_SIZE(sc_args);
2459 const char * const majpf_args[] = { "-e", "major-faults" };
2460 unsigned int majpf_args_nr = ARRAY_SIZE(majpf_args);
2461 const char * const minpf_args[] = { "-e", "minor-faults" };
2462 unsigned int minpf_args_nr = ARRAY_SIZE(minpf_args);
2463
9aca7f17 2464 /* +1 is for the event string below */
1e28fe0a
SF		 2465 rec_argc = ARRAY_SIZE(record_args) + sc_args_nr + 1 +
2466 majpf_args_nr + minpf_args_nr + argc;
5e2485b1
DA		 2467 rec_argv = calloc(rec_argc + 1, sizeof(char *));
2468
2469 if (rec_argv == NULL)
2470 return -ENOMEM;
2471
1e28fe0a 2472 j = 0;
5e2485b1 2473 for (i = 0; i < ARRAY_SIZE(record_args); i++)
1e28fe0a
SF		 2474 rec_argv[j++] = record_args[i];
2475
e281a960
SF		 2476 if (trace->trace_syscalls) {
2477 for (i = 0; i < sc_args_nr; i++)
2478 rec_argv[j++] = sc_args[i];
2479
2480 /* event string may be different for older kernels - e.g., RHEL6 */
2481 if (is_valid_tracepoint("raw_syscalls:sys_enter"))
2482 rec_argv[j++] = "raw_syscalls:sys_enter,raw_syscalls:sys_exit";
2483 else if (is_valid_tracepoint("syscalls:sys_enter"))
2484 rec_argv[j++] = "syscalls:sys_enter,syscalls:sys_exit";
2485 else {
2486 pr_err("Neither raw_syscalls nor syscalls events exist.\n");
c896f85a 2487 free(rec_argv);
e281a960
SF		 2488 return -1;
2489 }
9aca7f17 2490 }
9aca7f17 2491
1e28fe0a
SF		 2492 if (trace->trace_pgfaults & TRACE_PFMAJ)
2493 for (i = 0; i < majpf_args_nr; i++)
2494 rec_argv[j++] = majpf_args[i];
2495
2496 if (trace->trace_pgfaults & TRACE_PFMIN)
2497 for (i = 0; i < minpf_args_nr; i++)
2498 rec_argv[j++] = minpf_args[i];
2499
2500 for (i = 0; i < (unsigned int)argc; i++)
2501 rec_argv[j++] = argv[i];
5e2485b1 2502
b0ad8ea6 2503 return cmd_record(j, rec_argv);
5e2485b1
DA		 2504}
2505
bf2575c1
DA		 2506static size_t trace__fprintf_thread_summary(struct trace *trace, FILE *fp);
2507
08c98776 2508static bool perf_evlist__add_vfs_getname(struct perf_evlist *evlist)
c522739d 2509{
ef503831 2510 struct perf_evsel *evsel = perf_evsel__newtp("probe", "vfs_getname");
8dd2a131
JO		 2511
2512 if (IS_ERR(evsel))
08c98776 2513 return false;
c522739d
ACM		 2514
2515 if (perf_evsel__field(evsel, "pathname") == NULL) {
2516 perf_evsel__delete(evsel);
08c98776 2517 return false;
c522739d
ACM		 2518 }
2519
744a9719 2520 evsel->handler = trace__vfs_getname;
c522739d 2521 perf_evlist__add(evlist, evsel);
08c98776 2522 return true;
c522739d
ACM		 2523}
2524
0ae537cb 2525static struct perf_evsel *perf_evsel__new_pgfault(u64 config)
598d02c5
SF		 2526{
2527 struct perf_evsel *evsel;
2528 struct perf_event_attr attr = {
2529 .type = PERF_TYPE_SOFTWARE,
2530 .mmap_data = 1,
598d02c5
SF		 2531 };
2532
2533 attr.config = config;
0524798c 2534 attr.sample_period = 1;
598d02c5
SF		 2535
2536 event_attr_init(&attr);
2537
2538 evsel = perf_evsel__new(&attr);
0ae537cb
ACM		 2539 if (evsel)
2540 evsel->handler = trace__pgfault;
598d02c5 2541
0ae537cb 2542 return evsel;
598d02c5
SF		 2543}
2544
ddbb1b13
ACM		 2545static void trace__handle_event(struct trace *trace, union perf_event *event, struct perf_sample *sample)
2546{
2547 const u32 type = event->header.type;
2548 struct perf_evsel *evsel;
2549
ddbb1b13
ACM		 2550 if (type != PERF_RECORD_SAMPLE) {
2551 trace__process_event(trace, trace->host, event, sample);
2552 return;
2553 }
2554
2555 evsel = perf_evlist__id2evsel(trace->evlist, sample->id);
2556 if (evsel == NULL) {
2557 fprintf(trace->output, "Unknown tp ID %" PRIu64 ", skipping...\n", sample->id);
2558 return;
2559 }
2560
e6001980
ACM		 2561 trace__set_base_time(trace, evsel, sample);
2562
ddbb1b13
ACM		 2563 if (evsel->attr.type == PERF_TYPE_TRACEPOINT &&
2564 sample->raw_data == NULL) {
2565 fprintf(trace->output, "%s sample with no payload for tid: %d, cpu %d, raw_size=%d, skipping...\n",
2566 perf_evsel__name(evsel), sample->tid,
2567 sample->cpu, sample->raw_size);
2568 } else {
2569 tracepoint_handler handler = evsel->handler;
2570 handler(trace, evsel, event, sample);
2571 }
5067a8cd
ACM		 2572
2573 if (trace->nr_events_printed >= trace->max_events && trace->max_events != ULONG_MAX)
2574 interrupted = true;
ddbb1b13
ACM		 2575}
2576
c27366f0
ACM		 2577static int trace__add_syscall_newtp(struct trace *trace)
2578{
2579 int ret = -1;
2580 struct perf_evlist *evlist = trace->evlist;
2581 struct perf_evsel *sys_enter, *sys_exit;
2582
63f11c80 2583 sys_enter = perf_evsel__raw_syscall_newtp("sys_enter", trace__sys_enter);
c27366f0
ACM		 2584 if (sys_enter == NULL)
2585 goto out;
2586
2587 if (perf_evsel__init_sc_tp_ptr_field(sys_enter, args))
2588 goto out_delete_sys_enter;
2589
63f11c80 2590 sys_exit = perf_evsel__raw_syscall_newtp("sys_exit", trace__sys_exit);
c27366f0
ACM		 2591 if (sys_exit == NULL)
2592 goto out_delete_sys_enter;
2593
2594 if (perf_evsel__init_sc_tp_uint_field(sys_exit, ret))
2595 goto out_delete_sys_exit;
2596
08e26396
ACM		 2597 perf_evsel__config_callchain(sys_enter, &trace->opts, &callchain_param);
2598 perf_evsel__config_callchain(sys_exit, &trace->opts, &callchain_param);
2599
c27366f0
ACM		 2600 perf_evlist__add(evlist, sys_enter);
2601 perf_evlist__add(evlist, sys_exit);
2602
2ddd5c04 2603 if (callchain_param.enabled && !trace->kernel_syscallchains) {
44621819
ACM		 2604 /*
2605 * We're interested only in the user space callchain
2606 * leading to the syscall, allow overriding that for
2607 * debugging reasons using --kernel_syscall_callchains
2608 */
2609 sys_exit->attr.exclude_callchain_kernel = 1;
2610 }
2611
8b3ce757
ACM		 2612 trace->syscalls.events.sys_enter = sys_enter;
2613 trace->syscalls.events.sys_exit = sys_exit;
c27366f0
ACM		 2614
2615 ret = 0;
2616out:
2617 return ret;
2618
2619out_delete_sys_exit:
2620 perf_evsel__delete_priv(sys_exit);
2621out_delete_sys_enter:
2622 perf_evsel__delete_priv(sys_enter);
2623 goto out;
2624}
2625
246fbe03 2626static int trace__set_ev_qualifier_tp_filter(struct trace *trace)
19867b61
ACM		 2627{
2628 int err = -1;
b15d0a4c 2629 struct perf_evsel *sys_exit;
19867b61
ACM		 2630 char *filter = asprintf_expr_inout_ints("id", !trace->not_ev_qualifier,
2631 trace->ev_qualifier_ids.nr,
2632 trace->ev_qualifier_ids.entries);
2633
2634 if (filter == NULL)
2635 goto out_enomem;
2636
3541c034
MP		 2637 if (!perf_evsel__append_tp_filter(trace->syscalls.events.sys_enter,
2638 filter)) {
b15d0a4c 2639 sys_exit = trace->syscalls.events.sys_exit;
3541c034 2640 err = perf_evsel__append_tp_filter(sys_exit, filter);
b15d0a4c 2641 }
19867b61
ACM		 2642
2643 free(filter);
2644out:
2645 return err;
2646out_enomem:
2647 errno = ENOMEM;
2648 goto out;
2649}
c27366f0 2650
b27b38ed
ACM		 2651#ifdef HAVE_LIBBPF_SUPPORT
2652static int trace__set_ev_qualifier_bpf_filter(struct trace *trace)
2653{
2654 int fd = bpf_map__fd(trace->syscalls.map);
bbab50dd
ACM		 2655 struct bpf_map_syscall_entry value = {
2656 .enabled = !trace->not_ev_qualifier,
2657 };
b27b38ed
ACM		 2658 int err = 0;
2659 size_t i;
2660
2661 for (i = 0; i < trace->ev_qualifier_ids.nr; ++i) {
2662 int key = trace->ev_qualifier_ids.entries[i];
2663
2664 err = bpf_map_update_elem(fd, &key, &value, BPF_EXIST);
2665 if (err)
2666 break;
2667 }
2668
2669 return err;
2670}
2671
2672static int __trace__init_syscalls_bpf_map(struct trace *trace, bool enabled)
2673{
2674 int fd = bpf_map__fd(trace->syscalls.map);
bbab50dd
ACM		 2675 struct bpf_map_syscall_entry value = {
2676 .enabled = enabled,
2677 };
b27b38ed
ACM		 2678 int err = 0, key;
2679
2680 for (key = 0; key < trace->sctbl->syscalls.nr_entries; ++key) {
bbab50dd 2681 err = bpf_map_update_elem(fd, &key, &value, BPF_ANY);
b27b38ed
ACM		 2682 if (err)
2683 break;
2684 }
2685
2686 return err;
2687}
2688
2689static int trace__init_syscalls_bpf_map(struct trace *trace)
2690{
2691 bool enabled = true;
2692
2693 if (trace->ev_qualifier_ids.nr)
2694 enabled = trace->not_ev_qualifier;
2695
2696 return __trace__init_syscalls_bpf_map(trace, enabled);
2697}
2698#else
2699static int trace__set_ev_qualifier_bpf_filter(struct trace *trace __maybe_unused)
2700{
2701 return 0;
2702}
2703
2704static int trace__init_syscalls_bpf_map(struct trace *trace __maybe_unused)
2705{
2706 return 0;
2707}
2708#endif // HAVE_LIBBPF_SUPPORT
2709
246fbe03
ACM		 2710static int trace__set_ev_qualifier_filter(struct trace *trace)
2711{
b27b38ed
ACM		 2712 if (trace->syscalls.map)
2713 return trace__set_ev_qualifier_bpf_filter(trace);
f76214f9
ACM		 2714 if (trace->syscalls.events.sys_enter)
2715 return trace__set_ev_qualifier_tp_filter(trace);
2716 return 0;
246fbe03
ACM		 2717}
2718
a9964c43
ACM		 2719static int bpf_map__set_filter_pids(struct bpf_map *map __maybe_unused,
2720 size_t npids __maybe_unused, pid_t *pids __maybe_unused)
2721{
2722 int err = 0;
2723#ifdef HAVE_LIBBPF_SUPPORT
2724 bool value = true;
2725 int map_fd = bpf_map__fd(map);
2726 size_t i;
2727
2728 for (i = 0; i < npids; ++i) {
2729 err = bpf_map_update_elem(map_fd, &pids[i], &value, BPF_ANY);
2730 if (err)
2731 break;
2732 }
2733#endif
2734 return err;
2735}
2736
dd1a5037
ACM		 2737static int trace__set_filter_loop_pids(struct trace *trace)
2738{
a9964c43 2739 unsigned int nr = 1, err;
dd1a5037
ACM		 2740 pid_t pids[32] = {
2741 getpid(),
2742 };
082ab9a1
ACM		 2743 struct thread *thread = machine__find_thread(trace->host, pids[0], pids[0]);
2744
2745 while (thread && nr < ARRAY_SIZE(pids)) {
2746 struct thread *parent = machine__find_thread(trace->host, thread->ppid, thread->ppid);
2747
2748 if (parent == NULL)
2749 break;
2750
2751 if (!strcmp(thread__comm_str(parent), "sshd")) {
2752 pids[nr++] = parent->tid;
2753 break;
2754 }
2755 thread = parent;
2756 }
dd1a5037 2757
a9964c43
ACM		 2758 err = perf_evlist__set_tp_filter_pids(trace->evlist, nr, pids);
2759 if (!err && trace->filter_pids.map)
2760 err = bpf_map__set_filter_pids(trace->filter_pids.map, nr, pids);
2761
2762 return err;
2763}
2764
2765static int trace__set_filter_pids(struct trace *trace)
2766{
2767 int err = 0;
2768 /*
2769 * Better not use !target__has_task() here because we need to cover the
2770 * case where no threads were specified in the command line, but a
2771 * workload was, and in that case we will fill in the thread_map when
2772 * we fork the workload in perf_evlist__prepare_workload.
2773 */
2774 if (trace->filter_pids.nr > 0) {
2775 err = perf_evlist__set_tp_filter_pids(trace->evlist, trace->filter_pids.nr,
2776 trace->filter_pids.entries);
2777 if (!err && trace->filter_pids.map) {
2778 err = bpf_map__set_filter_pids(trace->filter_pids.map, trace->filter_pids.nr,
2779 trace->filter_pids.entries);
2780 }
2781 } else if (thread_map__pid(trace->evlist->threads, 0) == -1) {
2782 err = trace__set_filter_loop_pids(trace);
2783 }
2784
2785 return err;
dd1a5037
ACM		 2786}
2787
7ba61524 2788static int __trace__deliver_event(struct trace *trace, union perf_event *event)
1f44b3e2
JO		 2789{
2790 struct perf_evlist *evlist = trace->evlist;
2791 struct perf_sample sample;
2792 int err;
2793
2794 err = perf_evlist__parse_sample(evlist, event, &sample);
2795 if (err)
2796 fprintf(trace->output, "Can't parse sample, err = %d, skipping...\n", err);
2797 else
2798 trace__handle_event(trace, event, &sample);
2799
2800 return 0;
2801}
2802
a761a8d1 2803static int __trace__flush_events(struct trace *trace)
028713aa
JO		 2804{
2805 u64 first = ordered_events__first_time(&trace->oe.data);
2806 u64 flush = trace->oe.last - NSEC_PER_SEC;
2807
2808 /* Is there some thing to flush.. */
2809 if (first && first < flush)
2810 return ordered_events__flush_time(&trace->oe.data, flush);
2811
2812 return 0;
2813}
2814
a761a8d1
ACM		 2815static int trace__flush_events(struct trace *trace)
2816{
2817 return !trace->sort_events ? 0 : __trace__flush_events(trace);
2818}
2819
7ba61524 2820static int trace__deliver_event(struct trace *trace, union perf_event *event)
028713aa 2821{
028713aa
JO		 2822 int err;
2823
a761a8d1
ACM		 2824 if (!trace->sort_events)
2825 return __trace__deliver_event(trace, event);
2826
2827 err = perf_evlist__parse_sample_timestamp(trace->evlist, event, &trace->oe.last);
028713aa
JO		 2828 if (err && err != -1)
2829 return err;
2830
2831 err = ordered_events__queue(&trace->oe.data, event, trace->oe.last, 0);
2832 if (err)
2833 return err;
2834
7ba61524 2835 return trace__flush_events(trace);
028713aa
JO		 2836}
2837
2838static int ordered_events__deliver_event(struct ordered_events *oe,
2839 struct ordered_event *event)
2840{
2841 struct trace *trace = container_of(oe, struct trace, oe.data);
2842
7ba61524 2843 return __trace__deliver_event(trace, event->event);
028713aa
JO		 2844}
2845
f15eb531 2846static int trace__run(struct trace *trace, int argc, const char **argv)
514f1c67 2847{
14a052df 2848 struct perf_evlist *evlist = trace->evlist;
0ae537cb 2849 struct perf_evsel *evsel, *pgfault_maj = NULL, *pgfault_min = NULL;
efd5745e
ACM		 2850 int err = -1, i;
2851 unsigned long before;
f15eb531 2852 const bool forks = argc > 0;
46fb3c21 2853 bool draining = false;
514f1c67 2854
75b757ca
ACM		 2855 trace->live = true;
2856
0df50e0b
ACM		 2857 if (!trace->raw_augmented_syscalls) {
2858 if (trace->trace_syscalls && trace__add_syscall_newtp(trace))
2859 goto out_error_raw_syscalls;
514f1c67 2860
0df50e0b
ACM		 2861 if (trace->trace_syscalls)
2862 trace->vfs_getname = perf_evlist__add_vfs_getname(evlist);
2863 }
c522739d 2864
0ae537cb
ACM		 2865 if ((trace->trace_pgfaults & TRACE_PFMAJ)) {
2866 pgfault_maj = perf_evsel__new_pgfault(PERF_COUNT_SW_PAGE_FAULTS_MAJ);
2867 if (pgfault_maj == NULL)
2868 goto out_error_mem;
08e26396 2869 perf_evsel__config_callchain(pgfault_maj, &trace->opts, &callchain_param);
0ae537cb 2870 perf_evlist__add(evlist, pgfault_maj);
e2726d99 2871 }
598d02c5 2872
0ae537cb
ACM		 2873 if ((trace->trace_pgfaults & TRACE_PFMIN)) {
2874 pgfault_min = perf_evsel__new_pgfault(PERF_COUNT_SW_PAGE_FAULTS_MIN);
2875 if (pgfault_min == NULL)
2876 goto out_error_mem;
08e26396 2877 perf_evsel__config_callchain(pgfault_min, &trace->opts, &callchain_param);
0ae537cb
ACM		 2878 perf_evlist__add(evlist, pgfault_min);
2879 }
598d02c5 2880
1302d88e 2881 if (trace->sched &&
2cc990ba
ACM		 2882 perf_evlist__add_newtp(evlist, "sched", "sched_stat_runtime",
2883 trace__sched_stat_runtime))
2884 goto out_error_sched_stat_runtime;
1302d88e 2885
9ea42ba4
ACM		 2886 /*
2887 * If a global cgroup was set, apply it to all the events without an
2888 * explicit cgroup. I.e.:
2889 *
2890 * trace -G A -e sched:*switch
2891 *
2892 * Will set all raw_syscalls:sys_{enter,exit}, pgfault, vfs_getname, etc
2893 * _and_ sched:sched_switch to the 'A' cgroup, while:
2894 *
2895 * trace -e sched:*switch -G A
2896 *
2897 * will only set the sched:sched_switch event to the 'A' cgroup, all the
2898 * other events (raw_syscalls:sys_{enter,exit}, etc are left "without"
2899 * a cgroup (on the root cgroup, sys wide, etc).
2900 *
2901 * Multiple cgroups:
2902 *
2903 * trace -G A -e sched:*switch -G B
2904 *
2905 * the syscall ones go to the 'A' cgroup, the sched:sched_switch goes
2906 * to the 'B' cgroup.
2907 *
2908 * evlist__set_default_cgroup() grabs a reference of the passed cgroup
2909 * only for the evsels still without a cgroup, i.e. evsel->cgroup == NULL.
2910 */
2911 if (trace->cgroup)
2912 evlist__set_default_cgroup(trace->evlist, trace->cgroup);
2913
514f1c67
ACM		 2914 err = perf_evlist__create_maps(evlist, &trace->opts.target);
2915 if (err < 0) {
c24ff998 2916 fprintf(trace->output, "Problems parsing the target to trace, check your options!\n");
514f1c67
ACM		 2917 goto out_delete_evlist;
2918 }
2919
752fde44
ACM		 2920 err = trace__symbols_init(trace, evlist);
2921 if (err < 0) {
c24ff998 2922 fprintf(trace->output, "Problems initializing symbol libraries!\n");
03ad9747 2923 goto out_delete_evlist;
752fde44
ACM		 2924 }
2925
75d50117 2926 perf_evlist__config(evlist, &trace->opts, &callchain_param);
fde54b78 2927
f15eb531
NK		 2928 signal(SIGCHLD, sig_handler);
2929 signal(SIGINT, sig_handler);
2930
2931 if (forks) {
6ef73ec4 2932 err = perf_evlist__prepare_workload(evlist, &trace->opts.target,
735f7e0b 2933 argv, false, NULL);
f15eb531 2934 if (err < 0) {
c24ff998 2935 fprintf(trace->output, "Couldn't run the workload!\n");
03ad9747 2936 goto out_delete_evlist;
f15eb531
NK		 2937 }
2938 }
2939
514f1c67 2940 err = perf_evlist__open(evlist);
a8f23d8f
ACM		 2941 if (err < 0)
2942 goto out_error_open;
514f1c67 2943
ba504235
WN		 2944 err = bpf__apply_obj_config();
2945 if (err) {
2946 char errbuf[BUFSIZ];
2947
2948 bpf__strerror_apply_obj_config(err, errbuf, sizeof(errbuf));
2949 pr_err("ERROR: Apply config to BPF failed: %s\n",
2950 errbuf);
2951 goto out_error_open;
2952 }
2953
a9964c43 2954 err = trace__set_filter_pids(trace);
94ad89bc
ACM		 2955 if (err < 0)
2956 goto out_error_mem;
2957
b27b38ed
ACM		 2958 if (trace->syscalls.map)
2959 trace__init_syscalls_bpf_map(trace);
2960
19867b61
ACM		 2961 if (trace->ev_qualifier_ids.nr > 0) {
2962 err = trace__set_ev_qualifier_filter(trace);
2963 if (err < 0)
2964 goto out_errno;
19867b61 2965
0df50e0b
ACM		 2966 if (trace->syscalls.events.sys_exit) {
2967 pr_debug("event qualifier tracepoint filter: %s\n",
2968 trace->syscalls.events.sys_exit->filter);
2969 }
2e5e5f87 2970 }
19867b61 2971
94ad89bc
ACM		 2972 err = perf_evlist__apply_filters(evlist, &evsel);
2973 if (err < 0)
2974 goto out_error_apply_filters;
241b057c 2975
f74b9d3a 2976 err = perf_evlist__mmap(evlist, trace->opts.mmap_pages);
e09b18d4
ACM		 2977 if (err < 0)
2978 goto out_error_mmap;
514f1c67 2979
e36b7821 2980 if (!target__none(&trace->opts.target) && !trace->opts.initial_delay)
cb24d01d
ACM		 2981 perf_evlist__enable(evlist);
2982
f15eb531
NK		 2983 if (forks)
2984 perf_evlist__start_workload(evlist);
2985
e36b7821
AB		 2986 if (trace->opts.initial_delay) {
2987 usleep(trace->opts.initial_delay * 1000);
2988 perf_evlist__enable(evlist);
2989 }
2990
e13798c7 2991 trace->multiple_threads = thread_map__pid(evlist->threads, 0) == -1 ||
42052bea
ACM		 2992 evlist->threads->nr > 1 ||
2993 perf_evlist__first(evlist)->attr.inherit;
bd3dda9a
ACM		 2994
2995 /*
2996 * Now that we already used evsel->attr to ask the kernel to setup the
2997 * events, lets reuse evsel->attr.sample_max_stack as the limit in
2998 * trace__resolve_callchain(), allowing per-event max-stack settings
adba1634 2999 * to override an explicitly set --max-stack global setting.
bd3dda9a
ACM		 3000 */
3001 evlist__for_each_entry(evlist, evsel) {
27de9b2b 3002 if (evsel__has_callchain(evsel) &&
bd3dda9a
ACM		 3003 evsel->attr.sample_max_stack == 0)
3004 evsel->attr.sample_max_stack = trace->max_stack;
3005 }
514f1c67 3006again:
efd5745e 3007 before = trace->nr_events;
514f1c67
ACM		 3008
3009 for (i = 0; i < evlist->nr_mmaps; i++) {
3010 union perf_event *event;
d7f55c62 3011 struct perf_mmap *md;
514f1c67 3012
d7f55c62 3013 md = &evlist->mmap[i];
b9bae2c8 3014 if (perf_mmap__read_init(md) < 0)
d7f55c62
KL		 3015 continue;
3016
0019dc87 3017 while ((event = perf_mmap__read_event(md)) != NULL) {
efd5745e 3018 ++trace->nr_events;
514f1c67 3019
7ba61524 3020 err = trace__deliver_event(trace, event);
028713aa
JO		 3021 if (err)
3022 goto out_disable;
514f1c67 3023
d6ace3df 3024 perf_mmap__consume(md);
20c5f10e 3025
ba209f85
ACM		 3026 if (interrupted)
3027 goto out_disable;
02ac5421
ACM		 3028
3029 if (done && !draining) {
3030 perf_evlist__disable(evlist);
3031 draining = true;
3032 }
514f1c67 3033 }
d7f55c62 3034 perf_mmap__read_done(md);
514f1c67
ACM		 3035 }
3036
efd5745e 3037 if (trace->nr_events == before) {
ba209f85 3038 int timeout = done ? 100 : -1;
f15eb531 3039
46fb3c21 3040 if (!draining && perf_evlist__poll(evlist, timeout) > 0) {
a9c5e6c1 3041 if (perf_evlist__filter_pollfd(evlist, POLLERR | POLLHUP | POLLNVAL) == 0)
46fb3c21
ACM		 3042 draining = true;
3043
ba209f85 3044 goto again;
028713aa 3045 } else {
7ba61524 3046 if (trace__flush_events(trace))
028713aa 3047 goto out_disable;
46fb3c21 3048 }
ba209f85
ACM		 3049 } else {
3050 goto again;
f15eb531
NK		 3051 }
3052
ba209f85 3053out_disable:
f3b623b8
ACM		 3054 thread__zput(trace->current);
3055
ba209f85 3056 perf_evlist__disable(evlist);
514f1c67 3057
a761a8d1
ACM		 3058 if (trace->sort_events)
3059 ordered_events__flush(&trace->oe.data, OE_FLUSH__FINAL);
028713aa 3060
c522739d
ACM		 3061 if (!err) {
3062 if (trace->summary)
3063 trace__fprintf_thread_summary(trace, trace->output);
3064
3065 if (trace->show_tool_stats) {
3066 fprintf(trace->output, "Stats:\n "
3067 " vfs_getname : %" PRIu64 "\n"
3068 " proc_getname: %" PRIu64 "\n",
3069 trace->stats.vfs_getname,
3070 trace->stats.proc_getname);
3071 }
3072 }
bf2575c1 3073
514f1c67 3074out_delete_evlist:
33974a41
AV		 3075 trace__symbols__exit(trace);
3076
514f1c67 3077 perf_evlist__delete(evlist);
9ea42ba4 3078 cgroup__put(trace->cgroup);
14a052df 3079 trace->evlist = NULL;
75b757ca 3080 trace->live = false;
514f1c67 3081 return err;
6ef068cb
ACM		 3082{
3083 char errbuf[BUFSIZ];
a8f23d8f 3084
2cc990ba 3085out_error_sched_stat_runtime:
988bdb31 3086 tracing_path__strerror_open_tp(errno, errbuf, sizeof(errbuf), "sched", "sched_stat_runtime");
2cc990ba
ACM		 3087 goto out_error;
3088
801c67b0 3089out_error_raw_syscalls:
988bdb31 3090 tracing_path__strerror_open_tp(errno, errbuf, sizeof(errbuf), "raw_syscalls", "sys_(enter|exit)");
a8f23d8f
ACM		 3091 goto out_error;
3092
e09b18d4
ACM		 3093out_error_mmap:
3094 perf_evlist__strerror_mmap(evlist, errno, errbuf, sizeof(errbuf));
3095 goto out_error;
3096
a8f23d8f
ACM		 3097out_error_open:
3098 perf_evlist__strerror_open(evlist, errno, errbuf, sizeof(errbuf));
3099
3100out_error:
6ef068cb 3101 fprintf(trace->output, "%s\n", errbuf);
87f91868 3102 goto out_delete_evlist;
94ad89bc
ACM		 3103
3104out_error_apply_filters:
3105 fprintf(trace->output,
3106 "Failed to set filter \"%s\" on event %s with %d (%s)\n",
3107 evsel->filter, perf_evsel__name(evsel), errno,
c8b5f2c9 3108 str_error_r(errno, errbuf, sizeof(errbuf)));
94ad89bc 3109 goto out_delete_evlist;
514f1c67 3110}
5ed08dae
ACM		 3111out_error_mem:
3112 fprintf(trace->output, "Not enough memory to run!\n");
3113 goto out_delete_evlist;
19867b61
ACM		 3114
3115out_errno:
3116 fprintf(trace->output, "errno=%d,%s\n", errno, strerror(errno));
3117 goto out_delete_evlist;
a8f23d8f 3118}
514f1c67 3119
6810fc91
DA		 3120static int trace__replay(struct trace *trace)
3121{
3122 const struct perf_evsel_str_handler handlers[] = {
c522739d 3123 { "probe:vfs_getname", trace__vfs_getname, },
6810fc91 3124 };
8ceb41d7 3125 struct perf_data data = {
eae8ad80
JO		 3126 .file = {
3127 .path = input_name,
3128 },
3129 .mode = PERF_DATA_MODE_READ,
3130 .force = trace->force,
f5fc1412 3131 };
6810fc91 3132 struct perf_session *session;
003824e8 3133 struct perf_evsel *evsel;
6810fc91
DA		 3134 int err = -1;
3135
3136 trace->tool.sample = trace__process_sample;
3137 trace->tool.mmap = perf_event__process_mmap;
384c671e 3138 trace->tool.mmap2 = perf_event__process_mmap2;
6810fc91
DA		 3139 trace->tool.comm = perf_event__process_comm;
3140 trace->tool.exit = perf_event__process_exit;
3141 trace->tool.fork = perf_event__process_fork;
3142 trace->tool.attr = perf_event__process_attr;
f3b3614a 3143 trace->tool.tracing_data = perf_event__process_tracing_data;
6810fc91 3144 trace->tool.build_id = perf_event__process_build_id;
f3b3614a 3145 trace->tool.namespaces = perf_event__process_namespaces;
6810fc91 3146
0a8cb85c 3147 trace->tool.ordered_events = true;
6810fc91
DA		 3148 trace->tool.ordering_requires_timestamps = true;
3149
3150 /* add tid to output */
3151 trace->multiple_threads = true;
3152
8ceb41d7 3153 session = perf_session__new(&data, false, &trace->tool);
6810fc91 3154 if (session == NULL)
52e02834 3155 return -1;
6810fc91 3156
aa07df6e
DA		 3157 if (trace->opts.target.pid)
3158 symbol_conf.pid_list_str = strdup(trace->opts.target.pid);
3159
3160 if (trace->opts.target.tid)
3161 symbol_conf.tid_list_str = strdup(trace->opts.target.tid);
3162
0a7e6d1b 3163 if (symbol__init(&session->header.env) < 0)
cb2ffae2
NK		 3164 goto out;
3165
8fb598e5
DA		 3166 trace->host = &session->machines.host;
3167
6810fc91
DA		 3168 err = perf_session__set_tracepoints_handlers(session, handlers);
3169 if (err)
3170 goto out;
3171
003824e8
NK		 3172 evsel = perf_evlist__find_tracepoint_by_name(session->evlist,
3173 "raw_syscalls:sys_enter");
9aca7f17
DA		 3174 /* older kernels have syscalls tp versus raw_syscalls */
3175 if (evsel == NULL)
3176 evsel = perf_evlist__find_tracepoint_by_name(session->evlist,
3177 "syscalls:sys_enter");
003824e8 3178
e281a960 3179 if (evsel &&
63f11c80 3180 (perf_evsel__init_raw_syscall_tp(evsel, trace__sys_enter) < 0 ||
e281a960 3181 perf_evsel__init_sc_tp_ptr_field(evsel, args))) {
003824e8
NK		 3182 pr_err("Error during initialize raw_syscalls:sys_enter event\n");
3183 goto out;
3184 }
3185
3186 evsel = perf_evlist__find_tracepoint_by_name(session->evlist,
3187 "raw_syscalls:sys_exit");
9aca7f17
DA		 3188 if (evsel == NULL)
3189 evsel = perf_evlist__find_tracepoint_by_name(session->evlist,
3190 "syscalls:sys_exit");
e281a960 3191 if (evsel &&
63f11c80 3192 (perf_evsel__init_raw_syscall_tp(evsel, trace__sys_exit) < 0 ||
e281a960 3193 perf_evsel__init_sc_tp_uint_field(evsel, ret))) {
003824e8 3194 pr_err("Error during initialize raw_syscalls:sys_exit event\n");
6810fc91
DA		 3195 goto out;
3196 }
3197
e5cadb93 3198 evlist__for_each_entry(session->evlist, evsel) {
1e28fe0a
SF		 3199 if (evsel->attr.type == PERF_TYPE_SOFTWARE &&
3200 (evsel->attr.config == PERF_COUNT_SW_PAGE_FAULTS_MAJ ||
3201 evsel->attr.config == PERF_COUNT_SW_PAGE_FAULTS_MIN ||
3202 evsel->attr.config == PERF_COUNT_SW_PAGE_FAULTS))
3203 evsel->handler = trace__pgfault;
3204 }
3205
6810fc91
DA		 3206 setup_pager();
3207
b7b61cbe 3208 err = perf_session__process_events(session);
6810fc91
DA		 3209 if (err)
3210 pr_err("Failed to process events, error %d", err);
3211
bf2575c1
DA		 3212 else if (trace->summary)
3213 trace__fprintf_thread_summary(trace, trace->output);
3214
6810fc91
DA		 3215out:
3216 perf_session__delete(session);
3217
3218 return err;
3219}
3220
1302d88e
ACM		 3221static size_t trace__fprintf_threads_header(FILE *fp)
3222{
3223 size_t printed;
3224
99ff7150 3225 printed = fprintf(fp, "\n Summary of events:\n\n");
bf2575c1
DA		 3226
3227 return printed;
3228}
3229
b535d523
ACM		 3230DEFINE_RESORT_RB(syscall_stats, a->msecs > b->msecs,
3231 struct stats *stats;
3232 double msecs;
3233 int syscall;
3234)
3235{
3236 struct int_node *source = rb_entry(nd, struct int_node, rb_node);
3237 struct stats *stats = source->priv;
3238
3239 entry->syscall = source->i;
3240 entry->stats = stats;
3241 entry->msecs = stats ? (u64)stats->n * (avg_stats(stats) / NSEC_PER_MSEC) : 0;
3242}
3243
bf2575c1
DA		 3244static size_t thread__dump_stats(struct thread_trace *ttrace,
3245 struct trace *trace, FILE *fp)
3246{
bf2575c1
DA		 3247 size_t printed = 0;
3248 struct syscall *sc;
b535d523
ACM		 3249 struct rb_node *nd;
3250 DECLARE_RESORT_RB_INTLIST(syscall_stats, ttrace->syscall_stats);
bf2575c1 3251
b535d523 3252 if (syscall_stats == NULL)
bf2575c1
DA		 3253 return 0;
3254
3255 printed += fprintf(fp, "\n");
3256
834fd46d
MW		 3257 printed += fprintf(fp, " syscall calls total min avg max stddev\n");
3258 printed += fprintf(fp, " (msec) (msec) (msec) (msec) (%%)\n");
3259 printed += fprintf(fp, " --------------- -------- --------- --------- --------- --------- ------\n");
99ff7150 3260
98a91837 3261 resort_rb__for_each_entry(nd, syscall_stats) {
b535d523 3262 struct stats *stats = syscall_stats_entry->stats;
bf2575c1
DA		 3263 if (stats) {
3264 double min = (double)(stats->min) / NSEC_PER_MSEC;
3265 double max = (double)(stats->max) / NSEC_PER_MSEC;
3266 double avg = avg_stats(stats);
3267 double pct;
3268 u64 n = (u64) stats->n;
3269
3270 pct = avg ? 100.0 * stddev_stats(stats)/avg : 0.0;
3271 avg /= NSEC_PER_MSEC;
3272
b535d523 3273 sc = &trace->syscalls.table[syscall_stats_entry->syscall];
99ff7150 3274 printed += fprintf(fp, " %-15s", sc->name);
834fd46d 3275 printed += fprintf(fp, " %8" PRIu64 " %9.3f %9.3f %9.3f",
b535d523 3276 n, syscall_stats_entry->msecs, min, avg);
27a778b5 3277 printed += fprintf(fp, " %9.3f %9.2f%%\n", max, pct);
bf2575c1 3278 }
bf2575c1
DA		 3279 }
3280
b535d523 3281 resort_rb__delete(syscall_stats);
bf2575c1 3282 printed += fprintf(fp, "\n\n");
1302d88e
ACM		 3283
3284 return printed;
3285}
3286
96c14451 3287static size_t trace__fprintf_thread(FILE *fp, struct thread *thread, struct trace *trace)
896cbb56 3288{
96c14451 3289 size_t printed = 0;
89dceb22 3290 struct thread_trace *ttrace = thread__priv(thread);
896cbb56
DA		 3291 double ratio;
3292
3293 if (ttrace == NULL)
3294 return 0;
3295
3296 ratio = (double)ttrace->nr_events / trace->nr_events * 100.0;
3297
15e65c69 3298 printed += fprintf(fp, " %s (%d), ", thread__comm_str(thread), thread->tid);
99ff7150 3299 printed += fprintf(fp, "%lu events, ", ttrace->nr_events);
15e65c69 3300 printed += fprintf(fp, "%.1f%%", ratio);
a2ea67d7
SF		 3301 if (ttrace->pfmaj)
3302 printed += fprintf(fp, ", %lu majfaults", ttrace->pfmaj);
3303 if (ttrace->pfmin)
3304 printed += fprintf(fp, ", %lu minfaults", ttrace->pfmin);
03548ebf
ACM		 3305 if (trace->sched)
3306 printed += fprintf(fp, ", %.3f msec\n", ttrace->runtime_ms);
3307 else if (fputc('\n', fp) != EOF)
3308 ++printed;
3309
bf2575c1 3310 printed += thread__dump_stats(ttrace, trace, fp);
896cbb56 3311
96c14451
ACM		 3312 return printed;
3313}
896cbb56 3314
96c14451
ACM		 3315static unsigned long thread__nr_events(struct thread_trace *ttrace)
3316{
3317 return ttrace ? ttrace->nr_events : 0;
3318}
3319
3320DEFINE_RESORT_RB(threads, (thread__nr_events(a->thread->priv) < thread__nr_events(b->thread->priv)),
3321 struct thread *thread;
3322)
3323{
3324 entry->thread = rb_entry(nd, struct thread, rb_node);
896cbb56
DA		 3325}
3326
1302d88e
ACM		 3327static size_t trace__fprintf_thread_summary(struct trace *trace, FILE *fp)
3328{
96c14451
ACM		 3329 size_t printed = trace__fprintf_threads_header(fp);
3330 struct rb_node *nd;
91e467bc 3331 int i;
1302d88e 3332
91e467bc
KL		 3333 for (i = 0; i < THREADS__TABLE_SIZE; i++) {
3334 DECLARE_RESORT_RB_MACHINE_THREADS(threads, trace->host, i);
96c14451 3335
91e467bc
KL		 3336 if (threads == NULL) {
3337 fprintf(fp, "%s", "Error sorting output by nr_events!\n");
3338 return 0;
3339 }
896cbb56 3340
91e467bc
KL		 3341 resort_rb__for_each_entry(nd, threads)
3342 printed += trace__fprintf_thread(fp, threads_entry->thread, trace);
96c14451 3343
91e467bc
KL		 3344 resort_rb__delete(threads);
3345 }
96c14451 3346 return printed;
1302d88e
ACM		 3347}
3348
ae9ed035
ACM		 3349static int trace__set_duration(const struct option *opt, const char *str,
3350 int unset __maybe_unused)
3351{
3352 struct trace *trace = opt->value;
3353
3354 trace->duration_filter = atof(str);
3355 return 0;
3356}
3357
6a0b3aba
ACM		 3358static int trace__set_filter_pids_from_option(const struct option *opt, const char *str,
3359 int unset __maybe_unused)
f078c385
ACM		 3360{
3361 int ret = -1;
3362 size_t i;
3363 struct trace *trace = opt->value;
3364 /*
3365 * FIXME: introduce a intarray class, plain parse csv and create a
3366 * { int nr, int entries[] } struct...
3367 */
3368 struct intlist *list = intlist__new(str);
3369
3370 if (list == NULL)
3371 return -1;
3372
3373 i = trace->filter_pids.nr = intlist__nr_entries(list) + 1;
3374 trace->filter_pids.entries = calloc(i, sizeof(pid_t));
3375
3376 if (trace->filter_pids.entries == NULL)
3377 goto out;
3378
3379 trace->filter_pids.entries[0] = getpid();
3380
3381 for (i = 1; i < trace->filter_pids.nr; ++i)
3382 trace->filter_pids.entries[i] = intlist__entry(list, i - 1)->i;
3383
3384 intlist__delete(list);
3385 ret = 0;
3386out:
3387 return ret;
3388}
3389
c24ff998
ACM		 3390static int trace__open_output(struct trace *trace, const char *filename)
3391{
3392 struct stat st;
3393
3394 if (!stat(filename, &st) && st.st_size) {
3395 char oldname[PATH_MAX];
3396
3397 scnprintf(oldname, sizeof(oldname), "%s.old", filename);
3398 unlink(oldname);
3399 rename(filename, oldname);
3400 }
3401
3402 trace->output = fopen(filename, "w");
3403
3404 return trace->output == NULL ? -errno : 0;
3405}
3406
598d02c5
SF		 3407static int parse_pagefaults(const struct option *opt, const char *str,
3408 int unset __maybe_unused)
3409{
3410 int *trace_pgfaults = opt->value;
3411
3412 if (strcmp(str, "all") == 0)
3413 *trace_pgfaults |= TRACE_PFMAJ | TRACE_PFMIN;
3414 else if (strcmp(str, "maj") == 0)
3415 *trace_pgfaults |= TRACE_PFMAJ;
3416 else if (strcmp(str, "min") == 0)
3417 *trace_pgfaults |= TRACE_PFMIN;
3418 else
3419 return -1;
3420
3421 return 0;
3422}
3423
14a052df
ACM		 3424static void evlist__set_evsel_handler(struct perf_evlist *evlist, void *handler)
3425{
3426 struct perf_evsel *evsel;
3427
e5cadb93 3428 evlist__for_each_entry(evlist, evsel)
14a052df
ACM		 3429 evsel->handler = handler;
3430}
3431
d32855fa
ACM		 3432static int evlist__set_syscall_tp_fields(struct perf_evlist *evlist)
3433{
3434 struct perf_evsel *evsel;
3435
3436 evlist__for_each_entry(evlist, evsel) {
3437 if (evsel->priv || !evsel->tp_format)
3438 continue;
3439
3440 if (strcmp(evsel->tp_format->system, "syscalls"))
3441 continue;
3442
3443 if (perf_evsel__init_syscall_tp(evsel))
3444 return -1;
3445
3446 if (!strncmp(evsel->tp_format->name, "sys_enter_", 10)) {
3447 struct syscall_tp *sc = evsel->priv;
3448
3449 if (__tp_field__init_ptr(&sc->args, sc->id.offset + sizeof(u64)))
3450 return -1;
3451 } else if (!strncmp(evsel->tp_format->name, "sys_exit_", 9)) {
3452 struct syscall_tp *sc = evsel->priv;
3453
3454 if (__tp_field__init_uint(&sc->ret, sizeof(u64), sc->id.offset + sizeof(u64), evsel->needs_swap))
3455 return -1;
3456 }
3457 }
3458
3459 return 0;
3460}
3461
017037ff
ACM		 3462/*
3463 * XXX: Hackish, just splitting the combined -e+--event (syscalls
3464 * (raw_syscalls:{sys_{enter,exit}} + events (tracepoints, HW, SW, etc) to use
3465 * existing facilities unchanged (trace->ev_qualifier + parse_options()).
3466 *
3467 * It'd be better to introduce a parse_options() variant that would return a
3468 * list with the terms it didn't match to an event...
3469 */
3470static int trace__parse_events_option(const struct option *opt, const char *str,
3471 int unset __maybe_unused)
3472{
3473 struct trace *trace = (struct trace *)opt->value;
3474 const char *s = str;
3475 char *sep = NULL, *lists[2] = { NULL, NULL, };
27702bcf 3476 int len = strlen(str) + 1, err = -1, list, idx;
017037ff
ACM		 3477 char *strace_groups_dir = system_path(STRACE_GROUPS_DIR);
3478 char group_name[PATH_MAX];
f932184e 3479 struct syscall_fmt *fmt;
017037ff
ACM		 3480
3481 if (strace_groups_dir == NULL)
3482 return -1;
3483
3484 if (*s == '!') {
3485 ++s;
3486 trace->not_ev_qualifier = true;
3487 }
3488
3489 while (1) {
3490 if ((sep = strchr(s, ',')) != NULL)
3491 *sep = '\0';
3492
3493 list = 0;
27702bcf
ACM		 3494 if (syscalltbl__id(trace->sctbl, s) >= 0 ||
3495 syscalltbl__strglobmatch_first(trace->sctbl, s, &idx) >= 0) {
017037ff 3496 list = 1;
f932184e
ACM		 3497 goto do_concat;
3498 }
3499
3500 fmt = syscall_fmt__find_by_alias(s);
3501 if (fmt != NULL) {
3502 list = 1;
3503 s = fmt->name;
017037ff
ACM		 3504 } else {
3505 path__join(group_name, sizeof(group_name), strace_groups_dir, s);
3506 if (access(group_name, R_OK) == 0)
3507 list = 1;
3508 }
f932184e 3509do_concat:
017037ff
ACM		 3510 if (lists[list]) {
3511 sprintf(lists[list] + strlen(lists[list]), ",%s", s);
3512 } else {
3513 lists[list] = malloc(len);
3514 if (lists[list] == NULL)
3515 goto out;
3516 strcpy(lists[list], s);
3517 }
3518
3519 if (!sep)
3520 break;
3521
3522 *sep = ',';
3523 s = sep + 1;
3524 }
3525
3526 if (lists[1] != NULL) {
3527 struct strlist_config slist_config = {
3528 .dirname = strace_groups_dir,
3529 };
3530
3531 trace->ev_qualifier = strlist__new(lists[1], &slist_config);
3532 if (trace->ev_qualifier == NULL) {
3533 fputs("Not enough memory to parse event qualifier", trace->output);
3534 goto out;
3535 }
3536
3537 if (trace__validate_ev_qualifier(trace))
3538 goto out;
b912885a 3539 trace->trace_syscalls = true;
017037ff
ACM		 3540 }
3541
3542 err = 0;
3543
3544 if (lists[0]) {
3545 struct option o = OPT_CALLBACK('e', "event", &trace->evlist, "event",
3546 "event selector. use 'perf list' to list available events",
3547 parse_events_option);
3548 err = parse_events_option(&o, lists[0], 0);
3549 }
3550out:
3551 if (sep)
3552 *sep = ',';
3553
3554 return err;
3555}
3556
9ea42ba4
ACM		 3557static int trace__parse_cgroups(const struct option *opt, const char *str, int unset)
3558{
3559 struct trace *trace = opt->value;
3560
3561 if (!list_empty(&trace->evlist->entries))
3562 return parse_cgroups(opt, str, unset);
3563
3564 trace->cgroup = evlist__findnew_cgroup(trace->evlist, str);
3565
3566 return 0;
3567}
3568
744fafc7
ACM		 3569static struct bpf_map *bpf__find_map_by_name(const char *name)
3570{
3571 struct bpf_object *obj, *tmp;
3572
3573 bpf_object__for_each_safe(obj, tmp) {
3574 struct bpf_map *map = bpf_object__find_map_by_name(obj, name);
3575 if (map)
3576 return map;
3577
3578 }
3579
3580 return NULL;
3581}
3582
3583static void trace__set_bpf_map_filtered_pids(struct trace *trace)
3584{
3585 trace->filter_pids.map = bpf__find_map_by_name("pids_filtered");
3586}
3587
b27b38ed
ACM		 3588static void trace__set_bpf_map_syscalls(struct trace *trace)
3589{
3590 trace->syscalls.map = bpf__find_map_by_name("syscalls");
3591}
3592
ac96287c
ACM		 3593static int trace__config(const char *var, const char *value, void *arg)
3594{
e7c634fc 3595 struct trace *trace = arg;
ac96287c
ACM		 3596 int err = 0;
3597
3598 if (!strcmp(var, "trace.add_events")) {
ac96287c
ACM		 3599 struct option o = OPT_CALLBACK('e', "event", &trace->evlist, "event",
3600 "event selector. use 'perf list' to list available events",
3601 parse_events_option);
3602 err = parse_events_option(&o, value, 0);
b036146f
ACM		 3603 } else if (!strcmp(var, "trace.show_timestamp")) {
3604 trace->show_tstamp = perf_config_bool(var, value);
42e4a52d
ACM		 3605 } else if (!strcmp(var, "trace.show_duration")) {
3606 trace->show_duration = perf_config_bool(var, value);
9d6dc178
ACM		 3607 } else if (!strcmp(var, "trace.show_arg_names")) {
3608 trace->show_arg_names = perf_config_bool(var, value);
3609 if (!trace->show_arg_names)
3610 trace->show_zeros = true;
e7c634fc 3611 } else if (!strcmp(var, "trace.show_zeros")) {
9d6dc178
ACM		 3612 bool new_show_zeros = perf_config_bool(var, value);
3613 if (!trace->show_arg_names && !new_show_zeros) {
3614 pr_warning("trace.show_zeros has to be set when trace.show_arg_names=no\n");
3615 goto out;
3616 }
3617 trace->show_zeros = new_show_zeros;
c65c83ff
ACM		 3618 } else if (!strcmp(var, "trace.show_prefix")) {
3619 trace->show_string_prefix = perf_config_bool(var, value);
d32de87e
ACM		 3620 } else if (!strcmp(var, "trace.no_inherit")) {
3621 trace->opts.no_inherit = perf_config_bool(var, value);
9ed45d59
ACM		 3622 } else if (!strcmp(var, "trace.args_alignment")) {
3623 int args_alignment = 0;
3624 if (perf_config_int(&args_alignment, var, value) == 0)
3625 trace->args_alignment = args_alignment;
ac96287c 3626 }
9d6dc178 3627out:
ac96287c
ACM		 3628 return err;
3629}
3630
b0ad8ea6 3631int cmd_trace(int argc, const char **argv)
514f1c67 3632{
6fdd9cb7 3633 const char *trace_usage[] = {
f15eb531
NK		 3634 "perf trace [<options>] [<command>]",
3635 "perf trace [<options>] -- <command> [<options>]",
5e2485b1
DA		 3636 "perf trace record [<options>] [<command>]",
3637 "perf trace record [<options>] -- <command> [<options>]",
514f1c67
ACM		 3638 NULL
3639 };
3640 struct trace trace = {
514f1c67
ACM		 3641 .syscalls = {
3642 . max = -1,
3643 },
3644 .opts = {
3645 .target = {
3646 .uid = UINT_MAX,
3647 .uses_mmap = true,
3648 },
3649 .user_freq = UINT_MAX,
3650 .user_interval = ULLONG_MAX,
509051ea 3651 .no_buffering = true,
38d5447d 3652 .mmap_pages = UINT_MAX,
514f1c67 3653 },
007d66a0 3654 .output = stderr,
50c95cbd 3655 .show_comm = true,
b036146f 3656 .show_tstamp = true,
42e4a52d 3657 .show_duration = true,
9d6dc178 3658 .show_arg_names = true,
9ed45d59 3659 .args_alignment = 70,
b912885a 3660 .trace_syscalls = false,
44621819 3661 .kernel_syscallchains = false,
05614993 3662 .max_stack = UINT_MAX,
5067a8cd 3663 .max_events = ULONG_MAX,
514f1c67 3664 };
c24ff998 3665 const char *output_name = NULL;
514f1c67 3666 const struct option trace_options[] = {
017037ff
ACM		 3667 OPT_CALLBACK('e', "event", &trace, "event",
3668 "event/syscall selector. use 'perf list' to list available events",
3669 trace__parse_events_option),
50c95cbd
ACM		 3670 OPT_BOOLEAN(0, "comm", &trace.show_comm,
3671 "show the thread COMM next to its id"),
c522739d 3672 OPT_BOOLEAN(0, "tool_stats", &trace.show_tool_stats, "show tool stats"),
017037ff
ACM		 3673 OPT_CALLBACK(0, "expr", &trace, "expr", "list of syscalls/events to trace",
3674 trace__parse_events_option),
c24ff998 3675 OPT_STRING('o', "output", &output_name, "file", "output file name"),
6810fc91 3676 OPT_STRING('i', "input", &input_name, "file", "Analyze events in file"),
514f1c67
ACM		 3677 OPT_STRING('p', "pid", &trace.opts.target.pid, "pid",
3678 "trace events on existing process id"),
ac9be8ee 3679 OPT_STRING('t', "tid", &trace.opts.target.tid, "tid",
514f1c67 3680 "trace events on existing thread id"),
fa0e4ffe 3681 OPT_CALLBACK(0, "filter-pids", &trace, "CSV list of pids",
6a0b3aba 3682 "pids to filter (by the kernel)", trace__set_filter_pids_from_option),
ac9be8ee 3683 OPT_BOOLEAN('a', "all-cpus", &trace.opts.target.system_wide,
514f1c67 3684 "system-wide collection from all CPUs"),
ac9be8ee 3685 OPT_STRING('C', "cpu", &trace.opts.target.cpu_list, "cpu",
514f1c67 3686 "list of cpus to monitor"),
6810fc91 3687 OPT_BOOLEAN(0, "no-inherit", &trace.opts.no_inherit,
514f1c67 3688 "child tasks do not inherit counters"),
994a1f78
JO		 3689 OPT_CALLBACK('m', "mmap-pages", &trace.opts.mmap_pages, "pages",
3690 "number of mmap data pages",
3691 perf_evlist__parse_mmap_pages),
ac9be8ee 3692 OPT_STRING('u', "uid", &trace.opts.target.uid_str, "user",
514f1c67 3693 "user to profile"),
ae9ed035
ACM		 3694 OPT_CALLBACK(0, "duration", &trace, "float",
3695 "show only events with duration > N.M ms",
3696 trace__set_duration),
1302d88e 3697 OPT_BOOLEAN(0, "sched", &trace.sched, "show blocking scheduler events"),
7c304ee0 3698 OPT_INCR('v', "verbose", &verbose, "be more verbose"),
4bb09192
DA		 3699 OPT_BOOLEAN('T', "time", &trace.full_time,
3700 "Show full timestamp, not time relative to first start"),
0a6545bd
ACM		 3701 OPT_BOOLEAN(0, "failure", &trace.failure_only,
3702 "Show only syscalls that failed"),
fd2eabaf
DA		 3703 OPT_BOOLEAN('s', "summary", &trace.summary_only,
3704 "Show only syscall summary with statistics"),
3705 OPT_BOOLEAN('S', "with-summary", &trace.summary,
3706 "Show all syscalls and summary with statistics"),
598d02c5
SF		 3707 OPT_CALLBACK_DEFAULT('F', "pf", &trace.trace_pgfaults, "all|maj|min",
3708 "Trace pagefaults", parse_pagefaults, "maj"),
e281a960 3709 OPT_BOOLEAN(0, "syscalls", &trace.trace_syscalls, "Trace syscalls"),
e366a6d8 3710 OPT_BOOLEAN('f', "force", &trace.force, "don't complain, do it"),
566a0885
MW		 3711 OPT_CALLBACK(0, "call-graph", &trace.opts,
3712 "record_mode[,record_size]", record_callchain_help,
3713 &record_parse_callchain_opt),
44621819
ACM		 3714 OPT_BOOLEAN(0, "kernel-syscall-graph", &trace.kernel_syscallchains,
3715 "Show the kernel callchains on the syscall exit path"),
5067a8cd
ACM		 3716 OPT_ULONG(0, "max-events", &trace.max_events,
3717 "Set the maximum number of events to print, exit after that is reached. "),
5cf9c84e
ACM		 3718 OPT_UINTEGER(0, "min-stack", &trace.min_stack,
3719 "Set the minimum stack depth when parsing the callchain, "
3720 "anything below the specified depth will be ignored."),
c6d4a494
ACM		 3721 OPT_UINTEGER(0, "max-stack", &trace.max_stack,
3722 "Set the maximum stack depth when parsing the callchain, "
3723 "anything beyond the specified depth will be ignored. "
4cb93446 3724 "Default: kernel.perf_event_max_stack or " __stringify(PERF_MAX_STACK_DEPTH)),
a761a8d1
ACM		 3725 OPT_BOOLEAN(0, "sort-events", &trace.sort_events,
3726 "Sort batch of events before processing, use if getting out of order events"),
591421e1
ACM		 3727 OPT_BOOLEAN(0, "print-sample", &trace.print_sample,
3728 "print the PERF_RECORD_SAMPLE PERF_SAMPLE_ info, for debugging"),
3fcb10e4 3729 OPT_UINTEGER(0, "proc-map-timeout", &proc_map_timeout,
9d9cad76 3730 "per thread proc mmap processing timeout in ms"),
9ea42ba4
ACM		 3731 OPT_CALLBACK('G', "cgroup", &trace, "name", "monitor event in cgroup name only",
3732 trace__parse_cgroups),
e36b7821
AB		 3733 OPT_UINTEGER('D', "delay", &trace.opts.initial_delay,
3734 "ms to wait before starting measurement after program "
3735 "start"),
514f1c67
ACM		 3736 OPT_END()
3737 };
ccd62a89 3738 bool __maybe_unused max_stack_user_set = true;
f3e459d1 3739 bool mmap_pages_user_set = true;
78e890ea 3740 struct perf_evsel *evsel;
6fdd9cb7 3741 const char * const trace_subcommands[] = { "record", NULL };
78e890ea 3742 int err = -1;
32caf0d1 3743 char bf[BUFSIZ];
514f1c67 3744
4d08cb80
ACM		 3745 signal(SIGSEGV, sighandler_dump_stack);
3746 signal(SIGFPE, sighandler_dump_stack);
3747
14a052df 3748 trace.evlist = perf_evlist__new();
fd0db102 3749 trace.sctbl = syscalltbl__new();
14a052df 3750
fd0db102 3751 if (trace.evlist == NULL || trace.sctbl == NULL) {
14a052df 3752 pr_err("Not enough memory to run!\n");
ff8f695c 3753 err = -ENOMEM;
14a052df
ACM		 3754 goto out;
3755 }
3756
ac96287c
ACM		 3757 err = perf_config(trace__config, &trace);
3758 if (err)
3759 goto out;
3760
6fdd9cb7
YS		 3761 argc = parse_options_subcommand(argc, argv, trace_options, trace_subcommands,
3762 trace_usage, PARSE_OPT_STOP_AT_NON_OPTION);
fd2eabaf 3763
9ea42ba4
ACM		 3764 if ((nr_cgroups || trace.cgroup) && !trace.opts.target.system_wide) {
3765 usage_with_options_msg(trace_usage, trace_options,
3766 "cgroup monitoring only available in system-wide mode");
3767 }
3768
78e890ea
ACM		 3769 evsel = bpf__setup_output_event(trace.evlist, "__augmented_syscalls__");
3770 if (IS_ERR(evsel)) {
3771 bpf__strerror_setup_output_event(trace.evlist, PTR_ERR(evsel), bf, sizeof(bf));
e0b6d2ef
ACM		 3772 pr_err("ERROR: Setup trace syscalls enter failed: %s\n", bf);
3773 goto out;
3774 }
3775
744fafc7 3776 if (evsel) {
d3d1c4bd 3777 trace.syscalls.events.augmented = evsel;
744fafc7 3778 trace__set_bpf_map_filtered_pids(&trace);
b27b38ed 3779 trace__set_bpf_map_syscalls(&trace);
744fafc7 3780 }
d3d1c4bd 3781
d7888573
WN		 3782 err = bpf__setup_stdout(trace.evlist);
3783 if (err) {
3784 bpf__strerror_setup_stdout(trace.evlist, err, bf, sizeof(bf));
3785 pr_err("ERROR: Setup BPF stdout failed: %s\n", bf);
3786 goto out;
3787 }
3788
59247e33
ACM		 3789 err = -1;
3790
598d02c5
SF		 3791 if (trace.trace_pgfaults) {
3792 trace.opts.sample_address = true;
3793 trace.opts.sample_time = true;
3794 }
3795
f3e459d1
ACM		 3796 if (trace.opts.mmap_pages == UINT_MAX)
3797 mmap_pages_user_set = false;
3798
05614993 3799 if (trace.max_stack == UINT_MAX) {
029c75e5 3800 trace.max_stack = input_name ? PERF_MAX_STACK_DEPTH : sysctl__max_stack();
05614993
ACM		 3801 max_stack_user_set = false;
3802 }
3803
3804#ifdef HAVE_DWARF_UNWIND_SUPPORT
75d50117 3805 if ((trace.min_stack || max_stack_user_set) && !callchain_param.enabled) {
05614993 3806 record_opts__parse_callchain(&trace.opts, &callchain_param, "dwarf", false);
75d50117 3807 }
05614993
ACM		 3808#endif
3809
2ddd5c04 3810 if (callchain_param.enabled) {
f3e459d1
ACM		 3811 if (!mmap_pages_user_set && geteuid() == 0)
3812 trace.opts.mmap_pages = perf_event_mlock_kb_in_pages() * 4;
3813
566a0885 3814 symbol_conf.use_callchain = true;
f3e459d1 3815 }
566a0885 3816
d32855fa 3817 if (trace.evlist->nr_entries > 0) {
14a052df 3818 evlist__set_evsel_handler(trace.evlist, trace__event_handler);
d32855fa
ACM		 3819 if (evlist__set_syscall_tp_fields(trace.evlist)) {
3820 perror("failed to set syscalls:* tracepoint fields");
3821 goto out;
3822 }
3823 }
14a052df 3824
a761a8d1
ACM		 3825 if (trace.sort_events) {
3826 ordered_events__init(&trace.oe.data, ordered_events__deliver_event, &trace);
3827 ordered_events__set_copy_on_queue(&trace.oe.data, true);
3828 }
028713aa 3829
b1a9e253
ACM		 3830 /*
3831 * If we are augmenting syscalls, then combine what we put in the
3832 * __augmented_syscalls__ BPF map with what is in the
3833 * syscalls:sys_exit_FOO tracepoints, i.e. just like we do without BPF,
3834 * combining raw_syscalls:sys_enter with raw_syscalls:sys_exit.
3835 *
3836 * We'll switch to look at two BPF maps, one for sys_enter and the
3837 * other for sys_exit when we start augmenting the sys_exit paths with
3838 * buffers that are being copied from kernel to userspace, think 'read'
3839 * syscall.
3840 */
3841 if (trace.syscalls.events.augmented) {
b1a9e253 3842 evlist__for_each_entry(trace.evlist, evsel) {
cd26ea6d
ACM		 3843 bool raw_syscalls_sys_exit = strcmp(perf_evsel__name(evsel), "raw_syscalls:sys_exit") == 0;
3844
3845 if (raw_syscalls_sys_exit) {
3846 trace.raw_augmented_syscalls = true;
3847 goto init_augmented_syscall_tp;
3848 }
3849
b9b6a2ea
ACM		 3850 if (strcmp(perf_evsel__name(evsel), "raw_syscalls:sys_enter") == 0) {
3851 struct perf_evsel *augmented = trace.syscalls.events.augmented;
3852 if (perf_evsel__init_augmented_syscall_tp(augmented, evsel) ||
3853 perf_evsel__init_augmented_syscall_tp_args(augmented))
3854 goto out;
3855 augmented->handler = trace__sys_enter;
3856 }
3857
cd26ea6d 3858 if (strstarts(perf_evsel__name(evsel), "syscalls:sys_exit_")) {
b9b6a2ea 3859 struct syscall_tp *sc;
cd26ea6d 3860init_augmented_syscall_tp:
b9b6a2ea
ACM		 3861 if (perf_evsel__init_augmented_syscall_tp(evsel, evsel))
3862 goto out;
3863 sc = evsel->priv;
3864 /*
3865 * For now with BPF raw_augmented we hook into
3866 * raw_syscalls:sys_enter and there we get all
3867 * 6 syscall args plus the tracepoint common
3868 * fields and the syscall_nr (another long).
3869 * So we check if that is the case and if so
3870 * don't look after the sc->args_size but
3871 * always after the full raw_syscalls:sys_enter
3872 * payload, which is fixed.
3873 *
3874 * We'll revisit this later to pass
3875 * s->args_size to the BPF augmenter (now
3876 * tools/perf/examples/bpf/augmented_raw_syscalls.c,
3877 * so that it copies only what we need for each
3878 * syscall, like what happens when we use
3879 * syscalls:sys_enter_NAME, so that we reduce
3880 * the kernel/userspace traffic to just what is
3881 * needed for each syscall.
3882 */
3883 if (trace.raw_augmented_syscalls)
3884 trace.raw_augmented_syscalls_args_size = (6 + 1) * sizeof(long) + sc->id.offset;
b1a9e253
ACM		 3885 perf_evsel__init_augmented_syscall_tp_ret(evsel);
3886 evsel->handler = trace__sys_exit;
3887 }
3888 }
3889 }
3890
1e28fe0a
SF		 3891 if ((argc >= 1) && (strcmp(argv[0], "record") == 0))
3892 return trace__record(&trace, argc-1, &argv[1]);
3893
3894 /* summary_only implies summary option, but don't overwrite summary if set */
3895 if (trace.summary_only)
3896 trace.summary = trace.summary_only;
3897
726f3234
ACM		 3898 if (!trace.trace_syscalls && !trace.trace_pgfaults &&
3899 trace.evlist->nr_entries == 0 /* Was --events used? */) {
b912885a 3900 trace.trace_syscalls = true;
59247e33
ACM		 3901 }
3902
c24ff998
ACM		 3903 if (output_name != NULL) {
3904 err = trace__open_output(&trace, output_name);
3905 if (err < 0) {
3906 perror("failed to create output file");
3907 goto out;
3908 }
3909 }
3910
602ad878 3911 err = target__validate(&trace.opts.target);
32caf0d1 3912 if (err) {
602ad878 3913 target__strerror(&trace.opts.target, err, bf, sizeof(bf));
c24ff998
ACM		 3914 fprintf(trace.output, "%s", bf);
3915 goto out_close;
32caf0d1
NK		 3916 }
3917
602ad878 3918 err = target__parse_uid(&trace.opts.target);
514f1c67 3919 if (err) {
602ad878 3920 target__strerror(&trace.opts.target, err, bf, sizeof(bf));
c24ff998
ACM		 3921 fprintf(trace.output, "%s", bf);
3922 goto out_close;
514f1c67
ACM		 3923 }
3924
602ad878 3925 if (!argc && target__none(&trace.opts.target))
ee76120e
NK		 3926 trace.opts.target.system_wide = true;
3927
6810fc91
DA		 3928 if (input_name)
3929 err = trace__replay(&trace);
3930 else
3931 err = trace__run(&trace, argc, argv);
1302d88e 3932
c24ff998
ACM		 3933out_close:
3934 if (output_name != NULL)
3935 fclose(trace.output);
3936out:
1302d88e 3937 return err;
514f1c67 3938}
Linux 6.x block layer and io_uring tree(s)