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