1#include "builtin.h"
   2
   3#include "perf.h"
   4#include "util/cache.h"
   5#include "util/debug.h"
   6#include <subcmd/exec-cmd.h>
   7#include "util/header.h"
   8#include <subcmd/parse-options.h>
   9#include "util/perf_regs.h"
  10#include "util/session.h"
  11#include "util/tool.h"
  12#include "util/symbol.h"
  13#include "util/thread.h"
  14#include "util/trace-event.h"
  15#include "util/util.h"
  16#include "util/evlist.h"
  17#include "util/evsel.h"
  18#include "util/sort.h"
  19#include "util/data.h"
  20#include "util/auxtrace.h"
  21#include "util/cpumap.h"
  22#include "util/thread_map.h"
  23#include "util/stat.h"
 
 
  24#include <linux/bitmap.h>
 
 
  25#include "asm/bug.h"
  26#include "util/mem-events.h"
  27
  28static char const		*script_name;
  29static char const		*generate_script_lang;
  30static bool			debug_mode;
  31static u64			last_timestamp;
  32static u64			nr_unordered;
  33static bool			no_callchain;
  34static bool			latency_format;
  35static bool			system_wide;
  36static bool			print_flags;
  37static bool			nanosecs;
  38static const char		*cpu_list;
  39static DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
  40static struct perf_stat_config	stat_config;
  41
  42unsigned int scripting_max_stack = PERF_MAX_STACK_DEPTH;
  43
  44enum perf_output_field {
  45	PERF_OUTPUT_COMM            = 1U << 0,
  46	PERF_OUTPUT_TID             = 1U << 1,
  47	PERF_OUTPUT_PID             = 1U << 2,
  48	PERF_OUTPUT_TIME            = 1U << 3,
  49	PERF_OUTPUT_CPU             = 1U << 4,
  50	PERF_OUTPUT_EVNAME          = 1U << 5,
  51	PERF_OUTPUT_TRACE           = 1U << 6,
  52	PERF_OUTPUT_IP              = 1U << 7,
  53	PERF_OUTPUT_SYM             = 1U << 8,
  54	PERF_OUTPUT_DSO             = 1U << 9,
  55	PERF_OUTPUT_ADDR            = 1U << 10,
  56	PERF_OUTPUT_SYMOFFSET       = 1U << 11,
  57	PERF_OUTPUT_SRCLINE         = 1U << 12,
  58	PERF_OUTPUT_PERIOD          = 1U << 13,
  59	PERF_OUTPUT_IREGS	    = 1U << 14,
  60	PERF_OUTPUT_BRSTACK	    = 1U << 15,
  61	PERF_OUTPUT_BRSTACKSYM	    = 1U << 16,
  62	PERF_OUTPUT_DATA_SRC	    = 1U << 17,
  63	PERF_OUTPUT_WEIGHT	    = 1U << 18,
  64	PERF_OUTPUT_BPF_OUTPUT	    = 1U << 19,
 
 
 
  65};
  66
  67struct output_option {
  68	const char *str;
  69	enum perf_output_field field;
  70} all_output_options[] = {
  71	{.str = "comm",  .field = PERF_OUTPUT_COMM},
  72	{.str = "tid",   .field = PERF_OUTPUT_TID},
  73	{.str = "pid",   .field = PERF_OUTPUT_PID},
  74	{.str = "time",  .field = PERF_OUTPUT_TIME},
  75	{.str = "cpu",   .field = PERF_OUTPUT_CPU},
  76	{.str = "event", .field = PERF_OUTPUT_EVNAME},
  77	{.str = "trace", .field = PERF_OUTPUT_TRACE},
  78	{.str = "ip",    .field = PERF_OUTPUT_IP},
  79	{.str = "sym",   .field = PERF_OUTPUT_SYM},
  80	{.str = "dso",   .field = PERF_OUTPUT_DSO},
  81	{.str = "addr",  .field = PERF_OUTPUT_ADDR},
  82	{.str = "symoff", .field = PERF_OUTPUT_SYMOFFSET},
  83	{.str = "srcline", .field = PERF_OUTPUT_SRCLINE},
  84	{.str = "period", .field = PERF_OUTPUT_PERIOD},
  85	{.str = "iregs", .field = PERF_OUTPUT_IREGS},
  86	{.str = "brstack", .field = PERF_OUTPUT_BRSTACK},
  87	{.str = "brstacksym", .field = PERF_OUTPUT_BRSTACKSYM},
  88	{.str = "data_src", .field = PERF_OUTPUT_DATA_SRC},
  89	{.str = "weight",   .field = PERF_OUTPUT_WEIGHT},
  90	{.str = "bpf-output",   .field = PERF_OUTPUT_BPF_OUTPUT},
 
 
 
  91};
  92
  93/* default set to maintain compatibility with current format */
  94static struct {
  95	bool user_set;
  96	bool wildcard_set;
  97	unsigned int print_ip_opts;
  98	u64 fields;
  99	u64 invalid_fields;
 100} output[PERF_TYPE_MAX] = {
 101
 102	[PERF_TYPE_HARDWARE] = {
 103		.user_set = false,
 104
 105		.fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
 106			      PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
 107			      PERF_OUTPUT_EVNAME | PERF_OUTPUT_IP |
 108			      PERF_OUTPUT_SYM | PERF_OUTPUT_DSO |
 109			      PERF_OUTPUT_PERIOD,
 110
 111		.invalid_fields = PERF_OUTPUT_TRACE | PERF_OUTPUT_BPF_OUTPUT,
 112	},
 113
 114	[PERF_TYPE_SOFTWARE] = {
 115		.user_set = false,
 116
 117		.fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
 118			      PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
 119			      PERF_OUTPUT_EVNAME | PERF_OUTPUT_IP |
 120			      PERF_OUTPUT_SYM | PERF_OUTPUT_DSO |
 121			      PERF_OUTPUT_PERIOD | PERF_OUTPUT_BPF_OUTPUT,
 122
 123		.invalid_fields = PERF_OUTPUT_TRACE,
 124	},
 125
 126	[PERF_TYPE_TRACEPOINT] = {
 127		.user_set = false,
 128
 129		.fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
 130				  PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
 131				  PERF_OUTPUT_EVNAME | PERF_OUTPUT_TRACE
 132	},
 133
 134	[PERF_TYPE_RAW] = {
 135		.user_set = false,
 136
 137		.fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
 138			      PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
 139			      PERF_OUTPUT_EVNAME | PERF_OUTPUT_IP |
 140			      PERF_OUTPUT_SYM | PERF_OUTPUT_DSO |
 141			      PERF_OUTPUT_PERIOD |  PERF_OUTPUT_ADDR |
 142			      PERF_OUTPUT_DATA_SRC | PERF_OUTPUT_WEIGHT,
 143
 144		.invalid_fields = PERF_OUTPUT_TRACE | PERF_OUTPUT_BPF_OUTPUT,
 145	},
 146
 147	[PERF_TYPE_BREAKPOINT] = {
 148		.user_set = false,
 149
 150		.fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
 151			      PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
 152			      PERF_OUTPUT_EVNAME | PERF_OUTPUT_IP |
 153			      PERF_OUTPUT_SYM | PERF_OUTPUT_DSO |
 154			      PERF_OUTPUT_PERIOD,
 155
 156		.invalid_fields = PERF_OUTPUT_TRACE | PERF_OUTPUT_BPF_OUTPUT,
 157	},
 158};
 159
 160static bool output_set_by_user(void)
 161{
 162	int j;
 163	for (j = 0; j < PERF_TYPE_MAX; ++j) {
 164		if (output[j].user_set)
 165			return true;
 166	}
 167	return false;
 168}
 169
 170static const char *output_field2str(enum perf_output_field field)
 171{
 172	int i, imax = ARRAY_SIZE(all_output_options);
 173	const char *str = "";
 174
 175	for (i = 0; i < imax; ++i) {
 176		if (all_output_options[i].field == field) {
 177			str = all_output_options[i].str;
 178			break;
 179		}
 180	}
 181	return str;
 182}
 183
 184#define PRINT_FIELD(x)  (output[attr->type].fields & PERF_OUTPUT_##x)
 185
 186static int perf_evsel__do_check_stype(struct perf_evsel *evsel,
 187				      u64 sample_type, const char *sample_msg,
 188				      enum perf_output_field field,
 189				      bool allow_user_set)
 190{
 191	struct perf_event_attr *attr = &evsel->attr;
 192	int type = attr->type;
 193	const char *evname;
 194
 195	if (attr->sample_type & sample_type)
 196		return 0;
 197
 198	if (output[type].user_set) {
 199		if (allow_user_set)
 200			return 0;
 201		evname = perf_evsel__name(evsel);
 202		pr_err("Samples for '%s' event do not have %s attribute set. "
 203		       "Cannot print '%s' field.\n",
 204		       evname, sample_msg, output_field2str(field));
 205		return -1;
 206	}
 207
 208	/* user did not ask for it explicitly so remove from the default list */
 209	output[type].fields &= ~field;
 210	evname = perf_evsel__name(evsel);
 211	pr_debug("Samples for '%s' event do not have %s attribute set. "
 212		 "Skipping '%s' field.\n",
 213		 evname, sample_msg, output_field2str(field));
 214
 215	return 0;
 216}
 217
 218static int perf_evsel__check_stype(struct perf_evsel *evsel,
 219				   u64 sample_type, const char *sample_msg,
 220				   enum perf_output_field field)
 221{
 222	return perf_evsel__do_check_stype(evsel, sample_type, sample_msg, field,
 223					  false);
 224}
 225
 226static int perf_evsel__check_attr(struct perf_evsel *evsel,
 227				  struct perf_session *session)
 228{
 229	struct perf_event_attr *attr = &evsel->attr;
 230	bool allow_user_set;
 231
 232	if (perf_header__has_feat(&session->header, HEADER_STAT))
 233		return 0;
 234
 235	allow_user_set = perf_header__has_feat(&session->header,
 236					       HEADER_AUXTRACE);
 237
 238	if (PRINT_FIELD(TRACE) &&
 239		!perf_session__has_traces(session, "record -R"))
 240		return -EINVAL;
 241
 242	if (PRINT_FIELD(IP)) {
 243		if (perf_evsel__check_stype(evsel, PERF_SAMPLE_IP, "IP",
 244					    PERF_OUTPUT_IP))
 245			return -EINVAL;
 246	}
 247
 248	if (PRINT_FIELD(ADDR) &&
 249		perf_evsel__do_check_stype(evsel, PERF_SAMPLE_ADDR, "ADDR",
 250					   PERF_OUTPUT_ADDR, allow_user_set))
 251		return -EINVAL;
 252
 253	if (PRINT_FIELD(DATA_SRC) &&
 254		perf_evsel__check_stype(evsel, PERF_SAMPLE_DATA_SRC, "DATA_SRC",
 255					PERF_OUTPUT_DATA_SRC))
 256		return -EINVAL;
 257
 258	if (PRINT_FIELD(WEIGHT) &&
 259		perf_evsel__check_stype(evsel, PERF_SAMPLE_WEIGHT, "WEIGHT",
 260					PERF_OUTPUT_WEIGHT))
 261		return -EINVAL;
 262
 263	if (PRINT_FIELD(SYM) && !PRINT_FIELD(IP) && !PRINT_FIELD(ADDR)) {
 264		pr_err("Display of symbols requested but neither sample IP nor "
 265			   "sample address\nis selected. Hence, no addresses to convert "
 266		       "to symbols.\n");
 267		return -EINVAL;
 268	}
 269	if (PRINT_FIELD(SYMOFFSET) && !PRINT_FIELD(SYM)) {
 270		pr_err("Display of offsets requested but symbol is not"
 271		       "selected.\n");
 272		return -EINVAL;
 273	}
 274	if (PRINT_FIELD(DSO) && !PRINT_FIELD(IP) && !PRINT_FIELD(ADDR)) {
 275		pr_err("Display of DSO requested but neither sample IP nor "
 276			   "sample address\nis selected. Hence, no addresses to convert "
 277		       "to DSO.\n");
 278		return -EINVAL;
 279	}
 280	if (PRINT_FIELD(SRCLINE) && !PRINT_FIELD(IP)) {
 281		pr_err("Display of source line number requested but sample IP is not\n"
 282		       "selected. Hence, no address to lookup the source line number.\n");
 283		return -EINVAL;
 284	}
 285
 286	if ((PRINT_FIELD(PID) || PRINT_FIELD(TID)) &&
 287		perf_evsel__check_stype(evsel, PERF_SAMPLE_TID, "TID",
 288					PERF_OUTPUT_TID|PERF_OUTPUT_PID))
 289		return -EINVAL;
 290
 291	if (PRINT_FIELD(TIME) &&
 292		perf_evsel__check_stype(evsel, PERF_SAMPLE_TIME, "TIME",
 293					PERF_OUTPUT_TIME))
 294		return -EINVAL;
 295
 296	if (PRINT_FIELD(CPU) &&
 297		perf_evsel__do_check_stype(evsel, PERF_SAMPLE_CPU, "CPU",
 298					   PERF_OUTPUT_CPU, allow_user_set))
 299		return -EINVAL;
 300
 301	if (PRINT_FIELD(PERIOD) &&
 302		perf_evsel__check_stype(evsel, PERF_SAMPLE_PERIOD, "PERIOD",
 303					PERF_OUTPUT_PERIOD))
 304		return -EINVAL;
 305
 306	if (PRINT_FIELD(IREGS) &&
 307		perf_evsel__check_stype(evsel, PERF_SAMPLE_REGS_INTR, "IREGS",
 308					PERF_OUTPUT_IREGS))
 309		return -EINVAL;
 310
 311	return 0;
 312}
 313
 314static void set_print_ip_opts(struct perf_event_attr *attr)
 315{
 316	unsigned int type = attr->type;
 317
 318	output[type].print_ip_opts = 0;
 319	if (PRINT_FIELD(IP))
 320		output[type].print_ip_opts |= PRINT_IP_OPT_IP;
 321
 322	if (PRINT_FIELD(SYM))
 323		output[type].print_ip_opts |= PRINT_IP_OPT_SYM;
 324
 325	if (PRINT_FIELD(DSO))
 326		output[type].print_ip_opts |= PRINT_IP_OPT_DSO;
 327
 328	if (PRINT_FIELD(SYMOFFSET))
 329		output[type].print_ip_opts |= PRINT_IP_OPT_SYMOFFSET;
 330
 331	if (PRINT_FIELD(SRCLINE))
 332		output[type].print_ip_opts |= PRINT_IP_OPT_SRCLINE;
 333}
 334
 335/*
 336 * verify all user requested events exist and the samples
 337 * have the expected data
 338 */
 339static int perf_session__check_output_opt(struct perf_session *session)
 340{
 341	int j;
 342	struct perf_evsel *evsel;
 343
 344	for (j = 0; j < PERF_TYPE_MAX; ++j) {
 345		evsel = perf_session__find_first_evtype(session, j);
 346
 347		/*
 348		 * even if fields is set to 0 (ie., show nothing) event must
 349		 * exist if user explicitly includes it on the command line
 350		 */
 351		if (!evsel && output[j].user_set && !output[j].wildcard_set) {
 352			pr_err("%s events do not exist. "
 353			       "Remove corresponding -f option to proceed.\n",
 354			       event_type(j));
 355			return -1;
 356		}
 357
 358		if (evsel && output[j].fields &&
 359			perf_evsel__check_attr(evsel, session))
 360			return -1;
 361
 362		if (evsel == NULL)
 363			continue;
 364
 365		set_print_ip_opts(&evsel->attr);
 366	}
 367
 368	if (!no_callchain) {
 369		bool use_callchain = false;
 
 370
 371		evlist__for_each(session->evlist, evsel) {
 
 372			if (evsel->attr.sample_type & PERF_SAMPLE_CALLCHAIN) {
 373				use_callchain = true;
 374				break;
 375			}
 376		}
 377		if (!use_callchain)
 378			symbol_conf.use_callchain = false;
 379	}
 380
 381	/*
 382	 * set default for tracepoints to print symbols only
 383	 * if callchains are present
 384	 */
 385	if (symbol_conf.use_callchain &&
 386	    !output[PERF_TYPE_TRACEPOINT].user_set) {
 387		struct perf_event_attr *attr;
 388
 389		j = PERF_TYPE_TRACEPOINT;
 390		evsel = perf_session__find_first_evtype(session, j);
 391		if (evsel == NULL)
 392			goto out;
 393
 394		attr = &evsel->attr;
 
 
 395
 396		if (attr->sample_type & PERF_SAMPLE_CALLCHAIN) {
 397			output[j].fields |= PERF_OUTPUT_IP;
 398			output[j].fields |= PERF_OUTPUT_SYM;
 399			output[j].fields |= PERF_OUTPUT_DSO;
 400			set_print_ip_opts(attr);
 
 
 
 
 401		}
 402	}
 403
 404out:
 405	return 0;
 406}
 407
 408static void print_sample_iregs(struct perf_sample *sample,
 409			  struct perf_event_attr *attr)
 410{
 411	struct regs_dump *regs = &sample->intr_regs;
 412	uint64_t mask = attr->sample_regs_intr;
 413	unsigned i = 0, r;
 414
 415	if (!regs)
 416		return;
 417
 418	for_each_set_bit(r, (unsigned long *) &mask, sizeof(mask) * 8) {
 419		u64 val = regs->regs[i++];
 420		printf("%5s:0x%"PRIx64" ", perf_reg_name(r), val);
 421	}
 422}
 423
 424static void print_sample_start(struct perf_sample *sample,
 425			       struct thread *thread,
 426			       struct perf_evsel *evsel)
 427{
 428	struct perf_event_attr *attr = &evsel->attr;
 429	unsigned long secs;
 430	unsigned long usecs;
 431	unsigned long long nsecs;
 432
 433	if (PRINT_FIELD(COMM)) {
 434		if (latency_format)
 435			printf("%8.8s ", thread__comm_str(thread));
 436		else if (PRINT_FIELD(IP) && symbol_conf.use_callchain)
 437			printf("%s ", thread__comm_str(thread));
 438		else
 439			printf("%16s ", thread__comm_str(thread));
 440	}
 441
 442	if (PRINT_FIELD(PID) && PRINT_FIELD(TID))
 443		printf("%5d/%-5d ", sample->pid, sample->tid);
 444	else if (PRINT_FIELD(PID))
 445		printf("%5d ", sample->pid);
 446	else if (PRINT_FIELD(TID))
 447		printf("%5d ", sample->tid);
 448
 449	if (PRINT_FIELD(CPU)) {
 450		if (latency_format)
 451			printf("%3d ", sample->cpu);
 452		else
 453			printf("[%03d] ", sample->cpu);
 454	}
 455
 456	if (PRINT_FIELD(TIME)) {
 457		nsecs = sample->time;
 458		secs = nsecs / NSECS_PER_SEC;
 459		nsecs -= secs * NSECS_PER_SEC;
 460		usecs = nsecs / NSECS_PER_USEC;
 461		if (nanosecs)
 462			printf("%5lu.%09llu: ", secs, nsecs);
 463		else
 464			printf("%5lu.%06lu: ", secs, usecs);
 
 
 
 465	}
 466}
 467
 468static inline char
 469mispred_str(struct branch_entry *br)
 470{
 471	if (!(br->flags.mispred  || br->flags.predicted))
 472		return '-';
 473
 474	return br->flags.predicted ? 'P' : 'M';
 475}
 476
 477static void print_sample_brstack(struct perf_sample *sample)
 478{
 479	struct branch_stack *br = sample->branch_stack;
 480	u64 i;
 481
 482	if (!(br && br->nr))
 483		return;
 484
 485	for (i = 0; i < br->nr; i++) {
 486		printf(" 0x%"PRIx64"/0x%"PRIx64"/%c/%c/%c/%d ",
 487			br->entries[i].from,
 488			br->entries[i].to,
 489			mispred_str( br->entries + i),
 490			br->entries[i].flags.in_tx? 'X' : '-',
 491			br->entries[i].flags.abort? 'A' : '-',
 492			br->entries[i].flags.cycles);
 493	}
 494}
 495
 496static void print_sample_brstacksym(struct perf_sample *sample,
 497				    struct thread *thread)
 498{
 499	struct branch_stack *br = sample->branch_stack;
 500	struct addr_location alf, alt;
 501	u64 i, from, to;
 502
 503	if (!(br && br->nr))
 504		return;
 505
 506	for (i = 0; i < br->nr; i++) {
 507
 508		memset(&alf, 0, sizeof(alf));
 509		memset(&alt, 0, sizeof(alt));
 510		from = br->entries[i].from;
 511		to   = br->entries[i].to;
 512
 513		thread__find_addr_map(thread, sample->cpumode, MAP__FUNCTION, from, &alf);
 514		if (alf.map)
 515			alf.sym = map__find_symbol(alf.map, alf.addr, NULL);
 516
 517		thread__find_addr_map(thread, sample->cpumode, MAP__FUNCTION, to, &alt);
 518		if (alt.map)
 519			alt.sym = map__find_symbol(alt.map, alt.addr, NULL);
 520
 521		symbol__fprintf_symname_offs(alf.sym, &alf, stdout);
 522		putchar('/');
 523		symbol__fprintf_symname_offs(alt.sym, &alt, stdout);
 524		printf("/%c/%c/%c/%d ",
 525			mispred_str( br->entries + i),
 526			br->entries[i].flags.in_tx? 'X' : '-',
 527			br->entries[i].flags.abort? 'A' : '-',
 528			br->entries[i].flags.cycles);
 529	}
 530}
 531
 532
 533static void print_sample_addr(struct perf_sample *sample,
 534			  struct thread *thread,
 535			  struct perf_event_attr *attr)
 536{
 537	struct addr_location al;
 538
 539	printf("%16" PRIx64, sample->addr);
 540
 541	if (!sample_addr_correlates_sym(attr))
 542		return;
 543
 544	thread__resolve(thread, &al, sample);
 545
 546	if (PRINT_FIELD(SYM)) {
 547		printf(" ");
 548		if (PRINT_FIELD(SYMOFFSET))
 549			symbol__fprintf_symname_offs(al.sym, &al, stdout);
 550		else
 551			symbol__fprintf_symname(al.sym, stdout);
 552	}
 553
 554	if (PRINT_FIELD(DSO)) {
 555		printf(" (");
 556		map__fprintf_dsoname(al.map, stdout);
 557		printf(")");
 558	}
 559}
 560
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 561static void print_sample_bts(struct perf_sample *sample,
 562			     struct perf_evsel *evsel,
 563			     struct thread *thread,
 564			     struct addr_location *al)
 565{
 566	struct perf_event_attr *attr = &evsel->attr;
 567	bool print_srcline_last = false;
 568
 
 
 
 569	/* print branch_from information */
 570	if (PRINT_FIELD(IP)) {
 571		unsigned int print_opts = output[attr->type].print_ip_opts;
 
 572
 573		if (symbol_conf.use_callchain && sample->callchain) {
 574			printf("\n");
 575		} else {
 576			printf(" ");
 577			if (print_opts & PRINT_IP_OPT_SRCLINE) {
 
 
 
 578				print_srcline_last = true;
 579				print_opts &= ~PRINT_IP_OPT_SRCLINE;
 580			}
 581		}
 582		perf_evsel__print_ip(evsel, sample, al, print_opts,
 583				     scripting_max_stack);
 
 584	}
 585
 586	/* print branch_to information */
 587	if (PRINT_FIELD(ADDR) ||
 588	    ((evsel->attr.sample_type & PERF_SAMPLE_ADDR) &&
 589	     !output[attr->type].user_set)) {
 590		printf(" => ");
 591		print_sample_addr(sample, thread, attr);
 592	}
 593
 594	if (print_srcline_last)
 595		map__fprintf_srcline(al->map, al->addr, "\n  ", stdout);
 596
 
 
 597	printf("\n");
 598}
 599
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 600static void print_sample_flags(u32 flags)
 601{
 602	const char *chars = PERF_IP_FLAG_CHARS;
 603	const int n = strlen(PERF_IP_FLAG_CHARS);
 
 
 604	char str[33];
 605	int i, pos = 0;
 606
 
 
 
 
 
 
 
 607	for (i = 0; i < n; i++, flags >>= 1) {
 608		if (flags & 1)
 609			str[pos++] = chars[i];
 610	}
 611	for (; i < 32; i++, flags >>= 1) {
 612		if (flags & 1)
 613			str[pos++] = '?';
 614	}
 615	str[pos] = 0;
 616	printf("  %-4s ", str);
 
 
 
 
 617}
 618
 619struct printer_data {
 620	int line_no;
 621	bool hit_nul;
 622	bool is_printable;
 623};
 624
 625static void
 626print_sample_bpf_output_printer(enum binary_printer_ops op,
 627				unsigned int val,
 628				void *extra)
 629{
 630	unsigned char ch = (unsigned char)val;
 631	struct printer_data *printer_data = extra;
 632
 633	switch (op) {
 634	case BINARY_PRINT_DATA_BEGIN:
 635		printf("\n");
 636		break;
 637	case BINARY_PRINT_LINE_BEGIN:
 638		printf("%17s", !printer_data->line_no ? "BPF output:" :
 639						        "           ");
 640		break;
 641	case BINARY_PRINT_ADDR:
 642		printf(" %04x:", val);
 643		break;
 644	case BINARY_PRINT_NUM_DATA:
 645		printf(" %02x", val);
 646		break;
 647	case BINARY_PRINT_NUM_PAD:
 648		printf("   ");
 649		break;
 650	case BINARY_PRINT_SEP:
 651		printf("  ");
 652		break;
 653	case BINARY_PRINT_CHAR_DATA:
 654		if (printer_data->hit_nul && ch)
 655			printer_data->is_printable = false;
 656
 657		if (!isprint(ch)) {
 658			printf("%c", '.');
 659
 660			if (!printer_data->is_printable)
 661				break;
 662
 663			if (ch == '\0')
 664				printer_data->hit_nul = true;
 665			else
 666				printer_data->is_printable = false;
 667		} else {
 668			printf("%c", ch);
 669		}
 670		break;
 671	case BINARY_PRINT_CHAR_PAD:
 672		printf(" ");
 673		break;
 674	case BINARY_PRINT_LINE_END:
 675		printf("\n");
 676		printer_data->line_no++;
 677		break;
 678	case BINARY_PRINT_DATA_END:
 679	default:
 680		break;
 681	}
 682}
 683
 684static void print_sample_bpf_output(struct perf_sample *sample)
 685{
 686	unsigned int nr_bytes = sample->raw_size;
 687	struct printer_data printer_data = {0, false, true};
 688
 689	print_binary(sample->raw_data, nr_bytes, 8,
 690		     print_sample_bpf_output_printer, &printer_data);
 691
 692	if (printer_data.is_printable && printer_data.hit_nul)
 693		printf("%17s \"%s\"\n", "BPF string:",
 694		       (char *)(sample->raw_data));
 695}
 696
 697struct perf_script {
 698	struct perf_tool	tool;
 699	struct perf_session	*session;
 700	bool			show_task_events;
 701	bool			show_mmap_events;
 702	bool			show_switch_events;
 703	bool			allocated;
 704	struct cpu_map		*cpus;
 705	struct thread_map	*threads;
 706	int			name_width;
 
 
 707};
 708
 709static int perf_evlist__max_name_len(struct perf_evlist *evlist)
 710{
 711	struct perf_evsel *evsel;
 712	int max = 0;
 713
 714	evlist__for_each(evlist, evsel) {
 715		int len = strlen(perf_evsel__name(evsel));
 716
 717		max = MAX(len, max);
 718	}
 719
 720	return max;
 721}
 722
 723static size_t data_src__printf(u64 data_src)
 724{
 725	struct mem_info mi = { .data_src.val = data_src };
 726	char decode[100];
 727	char out[100];
 728	static int maxlen;
 729	int len;
 730
 731	perf_script__meminfo_scnprintf(decode, 100, &mi);
 732
 733	len = scnprintf(out, 100, "%16" PRIx64 " %s", data_src, decode);
 734	if (maxlen < len)
 735		maxlen = len;
 736
 737	return printf("%-*s", maxlen, out);
 738}
 739
 740static void process_event(struct perf_script *script,
 741			  struct perf_sample *sample, struct perf_evsel *evsel,
 742			  struct addr_location *al)
 743{
 744	struct thread *thread = al->thread;
 745	struct perf_event_attr *attr = &evsel->attr;
 746
 747	if (output[attr->type].fields == 0)
 748		return;
 749
 750	print_sample_start(sample, thread, evsel);
 751
 752	if (PRINT_FIELD(PERIOD))
 753		printf("%10" PRIu64 " ", sample->period);
 754
 755	if (PRINT_FIELD(EVNAME)) {
 756		const char *evname = perf_evsel__name(evsel);
 757
 758		if (!script->name_width)
 759			script->name_width = perf_evlist__max_name_len(script->session->evlist);
 760
 761		printf("%*s: ", script->name_width,
 762		       evname ? evname : "[unknown]");
 763	}
 764
 765	if (print_flags)
 766		print_sample_flags(sample->flags);
 767
 768	if (is_bts_event(attr)) {
 769		print_sample_bts(sample, evsel, thread, al);
 770		return;
 771	}
 772
 773	if (PRINT_FIELD(TRACE))
 774		event_format__print(evsel->tp_format, sample->cpu,
 775				    sample->raw_data, sample->raw_size);
 776	if (PRINT_FIELD(ADDR))
 777		print_sample_addr(sample, thread, attr);
 778
 779	if (PRINT_FIELD(DATA_SRC))
 780		data_src__printf(sample->data_src);
 781
 782	if (PRINT_FIELD(WEIGHT))
 783		printf("%16" PRIu64, sample->weight);
 784
 785	if (PRINT_FIELD(IP)) {
 786		if (!symbol_conf.use_callchain)
 787			printf(" ");
 788		else
 789			printf("\n");
 790
 791		perf_evsel__print_ip(evsel, sample, al,
 792				     output[attr->type].print_ip_opts,
 793				     scripting_max_stack);
 
 
 
 
 794	}
 795
 796	if (PRINT_FIELD(IREGS))
 797		print_sample_iregs(sample, attr);
 798
 799	if (PRINT_FIELD(BRSTACK))
 800		print_sample_brstack(sample);
 801	else if (PRINT_FIELD(BRSTACKSYM))
 802		print_sample_brstacksym(sample, thread);
 803
 804	if (perf_evsel__is_bpf_output(evsel) && PRINT_FIELD(BPF_OUTPUT))
 805		print_sample_bpf_output(sample);
 806
 807	printf("\n");
 808}
 809
 810static struct scripting_ops	*scripting_ops;
 811
 812static void __process_stat(struct perf_evsel *counter, u64 tstamp)
 813{
 814	int nthreads = thread_map__nr(counter->threads);
 815	int ncpus = perf_evsel__nr_cpus(counter);
 816	int cpu, thread;
 817	static int header_printed;
 818
 819	if (counter->system_wide)
 820		nthreads = 1;
 821
 822	if (!header_printed) {
 823		printf("%3s %8s %15s %15s %15s %15s %s\n",
 824		       "CPU", "THREAD", "VAL", "ENA", "RUN", "TIME", "EVENT");
 825		header_printed = 1;
 826	}
 827
 828	for (thread = 0; thread < nthreads; thread++) {
 829		for (cpu = 0; cpu < ncpus; cpu++) {
 830			struct perf_counts_values *counts;
 831
 832			counts = perf_counts(counter->counts, cpu, thread);
 833
 834			printf("%3d %8d %15" PRIu64 " %15" PRIu64 " %15" PRIu64 " %15" PRIu64 " %s\n",
 835				counter->cpus->map[cpu],
 836				thread_map__pid(counter->threads, thread),
 837				counts->val,
 838				counts->ena,
 839				counts->run,
 840				tstamp,
 841				perf_evsel__name(counter));
 842		}
 843	}
 844}
 845
 846static void process_stat(struct perf_evsel *counter, u64 tstamp)
 847{
 848	if (scripting_ops && scripting_ops->process_stat)
 849		scripting_ops->process_stat(&stat_config, counter, tstamp);
 850	else
 851		__process_stat(counter, tstamp);
 852}
 853
 854static void process_stat_interval(u64 tstamp)
 855{
 856	if (scripting_ops && scripting_ops->process_stat_interval)
 857		scripting_ops->process_stat_interval(tstamp);
 858}
 859
 860static void setup_scripting(void)
 861{
 862	setup_perl_scripting();
 863	setup_python_scripting();
 864}
 865
 866static int flush_scripting(void)
 867{
 868	return scripting_ops ? scripting_ops->flush_script() : 0;
 869}
 870
 871static int cleanup_scripting(void)
 872{
 873	pr_debug("\nperf script stopped\n");
 874
 875	return scripting_ops ? scripting_ops->stop_script() : 0;
 876}
 877
 878static int process_sample_event(struct perf_tool *tool,
 879				union perf_event *event,
 880				struct perf_sample *sample,
 881				struct perf_evsel *evsel,
 882				struct machine *machine)
 883{
 884	struct perf_script *scr = container_of(tool, struct perf_script, tool);
 885	struct addr_location al;
 886
 
 
 
 887	if (debug_mode) {
 888		if (sample->time < last_timestamp) {
 889			pr_err("Samples misordered, previous: %" PRIu64
 890				" this: %" PRIu64 "\n", last_timestamp,
 891				sample->time);
 892			nr_unordered++;
 893		}
 894		last_timestamp = sample->time;
 895		return 0;
 896	}
 897
 898	if (machine__resolve(machine, &al, sample) < 0) {
 899		pr_err("problem processing %d event, skipping it.\n",
 900		       event->header.type);
 901		return -1;
 902	}
 903
 904	if (al.filtered)
 905		goto out_put;
 906
 907	if (cpu_list && !test_bit(sample->cpu, cpu_bitmap))
 908		goto out_put;
 909
 910	if (scripting_ops)
 911		scripting_ops->process_event(event, sample, evsel, &al);
 912	else
 913		process_event(scr, sample, evsel, &al);
 914
 915out_put:
 916	addr_location__put(&al);
 917	return 0;
 918}
 919
 920static int process_attr(struct perf_tool *tool, union perf_event *event,
 921			struct perf_evlist **pevlist)
 922{
 923	struct perf_script *scr = container_of(tool, struct perf_script, tool);
 924	struct perf_evlist *evlist;
 925	struct perf_evsel *evsel, *pos;
 926	int err;
 927
 928	err = perf_event__process_attr(tool, event, pevlist);
 929	if (err)
 930		return err;
 931
 932	evlist = *pevlist;
 933	evsel = perf_evlist__last(*pevlist);
 934
 935	if (evsel->attr.type >= PERF_TYPE_MAX)
 936		return 0;
 937
 938	evlist__for_each(evlist, pos) {
 939		if (pos->attr.type == evsel->attr.type && pos != evsel)
 940			return 0;
 941	}
 942
 943	set_print_ip_opts(&evsel->attr);
 944
 945	if (evsel->attr.sample_type)
 946		err = perf_evsel__check_attr(evsel, scr->session);
 947
 948	return err;
 949}
 950
 951static int process_comm_event(struct perf_tool *tool,
 952			      union perf_event *event,
 953			      struct perf_sample *sample,
 954			      struct machine *machine)
 955{
 956	struct thread *thread;
 957	struct perf_script *script = container_of(tool, struct perf_script, tool);
 958	struct perf_session *session = script->session;
 959	struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id);
 960	int ret = -1;
 961
 962	thread = machine__findnew_thread(machine, event->comm.pid, event->comm.tid);
 963	if (thread == NULL) {
 964		pr_debug("problem processing COMM event, skipping it.\n");
 965		return -1;
 966	}
 967
 968	if (perf_event__process_comm(tool, event, sample, machine) < 0)
 969		goto out;
 970
 971	if (!evsel->attr.sample_id_all) {
 972		sample->cpu = 0;
 973		sample->time = 0;
 974		sample->tid = event->comm.tid;
 975		sample->pid = event->comm.pid;
 976	}
 977	print_sample_start(sample, thread, evsel);
 978	perf_event__fprintf(event, stdout);
 979	ret = 0;
 980out:
 981	thread__put(thread);
 982	return ret;
 983}
 984
 985static int process_fork_event(struct perf_tool *tool,
 986			      union perf_event *event,
 987			      struct perf_sample *sample,
 988			      struct machine *machine)
 989{
 990	struct thread *thread;
 991	struct perf_script *script = container_of(tool, struct perf_script, tool);
 992	struct perf_session *session = script->session;
 993	struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id);
 994
 995	if (perf_event__process_fork(tool, event, sample, machine) < 0)
 996		return -1;
 997
 998	thread = machine__findnew_thread(machine, event->fork.pid, event->fork.tid);
 999	if (thread == NULL) {
1000		pr_debug("problem processing FORK event, skipping it.\n");
1001		return -1;
1002	}
1003
1004	if (!evsel->attr.sample_id_all) {
1005		sample->cpu = 0;
1006		sample->time = event->fork.time;
1007		sample->tid = event->fork.tid;
1008		sample->pid = event->fork.pid;
1009	}
1010	print_sample_start(sample, thread, evsel);
1011	perf_event__fprintf(event, stdout);
1012	thread__put(thread);
1013
1014	return 0;
1015}
1016static int process_exit_event(struct perf_tool *tool,
1017			      union perf_event *event,
1018			      struct perf_sample *sample,
1019			      struct machine *machine)
1020{
1021	int err = 0;
1022	struct thread *thread;
1023	struct perf_script *script = container_of(tool, struct perf_script, tool);
1024	struct perf_session *session = script->session;
1025	struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id);
1026
1027	thread = machine__findnew_thread(machine, event->fork.pid, event->fork.tid);
1028	if (thread == NULL) {
1029		pr_debug("problem processing EXIT event, skipping it.\n");
1030		return -1;
1031	}
1032
1033	if (!evsel->attr.sample_id_all) {
1034		sample->cpu = 0;
1035		sample->time = 0;
1036		sample->tid = event->fork.tid;
1037		sample->pid = event->fork.pid;
1038	}
1039	print_sample_start(sample, thread, evsel);
1040	perf_event__fprintf(event, stdout);
1041
1042	if (perf_event__process_exit(tool, event, sample, machine) < 0)
1043		err = -1;
1044
1045	thread__put(thread);
1046	return err;
1047}
1048
1049static int process_mmap_event(struct perf_tool *tool,
1050			      union perf_event *event,
1051			      struct perf_sample *sample,
1052			      struct machine *machine)
1053{
1054	struct thread *thread;
1055	struct perf_script *script = container_of(tool, struct perf_script, tool);
1056	struct perf_session *session = script->session;
1057	struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id);
1058
1059	if (perf_event__process_mmap(tool, event, sample, machine) < 0)
1060		return -1;
1061
1062	thread = machine__findnew_thread(machine, event->mmap.pid, event->mmap.tid);
1063	if (thread == NULL) {
1064		pr_debug("problem processing MMAP event, skipping it.\n");
1065		return -1;
1066	}
1067
1068	if (!evsel->attr.sample_id_all) {
1069		sample->cpu = 0;
1070		sample->time = 0;
1071		sample->tid = event->mmap.tid;
1072		sample->pid = event->mmap.pid;
1073	}
1074	print_sample_start(sample, thread, evsel);
1075	perf_event__fprintf(event, stdout);
1076	thread__put(thread);
1077	return 0;
1078}
1079
1080static int process_mmap2_event(struct perf_tool *tool,
1081			      union perf_event *event,
1082			      struct perf_sample *sample,
1083			      struct machine *machine)
1084{
1085	struct thread *thread;
1086	struct perf_script *script = container_of(tool, struct perf_script, tool);
1087	struct perf_session *session = script->session;
1088	struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id);
1089
1090	if (perf_event__process_mmap2(tool, event, sample, machine) < 0)
1091		return -1;
1092
1093	thread = machine__findnew_thread(machine, event->mmap2.pid, event->mmap2.tid);
1094	if (thread == NULL) {
1095		pr_debug("problem processing MMAP2 event, skipping it.\n");
1096		return -1;
1097	}
1098
1099	if (!evsel->attr.sample_id_all) {
1100		sample->cpu = 0;
1101		sample->time = 0;
1102		sample->tid = event->mmap2.tid;
1103		sample->pid = event->mmap2.pid;
1104	}
1105	print_sample_start(sample, thread, evsel);
1106	perf_event__fprintf(event, stdout);
1107	thread__put(thread);
1108	return 0;
1109}
1110
1111static int process_switch_event(struct perf_tool *tool,
1112				union perf_event *event,
1113				struct perf_sample *sample,
1114				struct machine *machine)
1115{
1116	struct thread *thread;
1117	struct perf_script *script = container_of(tool, struct perf_script, tool);
1118	struct perf_session *session = script->session;
1119	struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id);
1120
1121	if (perf_event__process_switch(tool, event, sample, machine) < 0)
1122		return -1;
1123
1124	thread = machine__findnew_thread(machine, sample->pid,
1125					 sample->tid);
1126	if (thread == NULL) {
1127		pr_debug("problem processing SWITCH event, skipping it.\n");
1128		return -1;
1129	}
1130
1131	print_sample_start(sample, thread, evsel);
1132	perf_event__fprintf(event, stdout);
1133	thread__put(thread);
1134	return 0;
1135}
1136
1137static void sig_handler(int sig __maybe_unused)
1138{
1139	session_done = 1;
1140}
1141
1142static int __cmd_script(struct perf_script *script)
1143{
1144	int ret;
1145
1146	signal(SIGINT, sig_handler);
1147
1148	/* override event processing functions */
1149	if (script->show_task_events) {
1150		script->tool.comm = process_comm_event;
1151		script->tool.fork = process_fork_event;
1152		script->tool.exit = process_exit_event;
1153	}
1154	if (script->show_mmap_events) {
1155		script->tool.mmap = process_mmap_event;
1156		script->tool.mmap2 = process_mmap2_event;
1157	}
1158	if (script->show_switch_events)
1159		script->tool.context_switch = process_switch_event;
1160
1161	ret = perf_session__process_events(script->session);
1162
1163	if (debug_mode)
1164		pr_err("Misordered timestamps: %" PRIu64 "\n", nr_unordered);
1165
1166	return ret;
1167}
1168
1169struct script_spec {
1170	struct list_head	node;
1171	struct scripting_ops	*ops;
1172	char			spec[0];
1173};
1174
1175static LIST_HEAD(script_specs);
1176
1177static struct script_spec *script_spec__new(const char *spec,
1178					    struct scripting_ops *ops)
1179{
1180	struct script_spec *s = malloc(sizeof(*s) + strlen(spec) + 1);
1181
1182	if (s != NULL) {
1183		strcpy(s->spec, spec);
1184		s->ops = ops;
1185	}
1186
1187	return s;
1188}
1189
1190static void script_spec__add(struct script_spec *s)
1191{
1192	list_add_tail(&s->node, &script_specs);
1193}
1194
1195static struct script_spec *script_spec__find(const char *spec)
1196{
1197	struct script_spec *s;
1198
1199	list_for_each_entry(s, &script_specs, node)
1200		if (strcasecmp(s->spec, spec) == 0)
1201			return s;
1202	return NULL;
1203}
1204
1205int script_spec_register(const char *spec, struct scripting_ops *ops)
1206{
1207	struct script_spec *s;
1208
1209	s = script_spec__find(spec);
1210	if (s)
1211		return -1;
1212
1213	s = script_spec__new(spec, ops);
1214	if (!s)
1215		return -1;
1216	else
1217		script_spec__add(s);
1218
1219	return 0;
1220}
1221
1222static struct scripting_ops *script_spec__lookup(const char *spec)
1223{
1224	struct script_spec *s = script_spec__find(spec);
1225	if (!s)
1226		return NULL;
1227
1228	return s->ops;
1229}
1230
1231static void list_available_languages(void)
1232{
1233	struct script_spec *s;
1234
1235	fprintf(stderr, "\n");
1236	fprintf(stderr, "Scripting language extensions (used in "
1237		"perf script -s [spec:]script.[spec]):\n\n");
1238
1239	list_for_each_entry(s, &script_specs, node)
1240		fprintf(stderr, "  %-42s [%s]\n", s->spec, s->ops->name);
1241
1242	fprintf(stderr, "\n");
1243}
1244
1245static int parse_scriptname(const struct option *opt __maybe_unused,
1246			    const char *str, int unset __maybe_unused)
1247{
1248	char spec[PATH_MAX];
1249	const char *script, *ext;
1250	int len;
1251
1252	if (strcmp(str, "lang") == 0) {
1253		list_available_languages();
1254		exit(0);
1255	}
1256
1257	script = strchr(str, ':');
1258	if (script) {
1259		len = script - str;
1260		if (len >= PATH_MAX) {
1261			fprintf(stderr, "invalid language specifier");
1262			return -1;
1263		}
1264		strncpy(spec, str, len);
1265		spec[len] = '\0';
1266		scripting_ops = script_spec__lookup(spec);
1267		if (!scripting_ops) {
1268			fprintf(stderr, "invalid language specifier");
1269			return -1;
1270		}
1271		script++;
1272	} else {
1273		script = str;
1274		ext = strrchr(script, '.');
1275		if (!ext) {
1276			fprintf(stderr, "invalid script extension");
1277			return -1;
1278		}
1279		scripting_ops = script_spec__lookup(++ext);
1280		if (!scripting_ops) {
1281			fprintf(stderr, "invalid script extension");
1282			return -1;
1283		}
1284	}
1285
1286	script_name = strdup(script);
1287
1288	return 0;
1289}
1290
1291static int parse_output_fields(const struct option *opt __maybe_unused,
1292			    const char *arg, int unset __maybe_unused)
1293{
1294	char *tok;
1295	int i, imax = ARRAY_SIZE(all_output_options);
1296	int j;
1297	int rc = 0;
1298	char *str = strdup(arg);
1299	int type = -1;
1300
1301	if (!str)
1302		return -ENOMEM;
1303
1304	/* first word can state for which event type the user is specifying
1305	 * the fields. If no type exists, the specified fields apply to all
1306	 * event types found in the file minus the invalid fields for a type.
1307	 */
1308	tok = strchr(str, ':');
1309	if (tok) {
1310		*tok = '\0';
1311		tok++;
1312		if (!strcmp(str, "hw"))
1313			type = PERF_TYPE_HARDWARE;
1314		else if (!strcmp(str, "sw"))
1315			type = PERF_TYPE_SOFTWARE;
1316		else if (!strcmp(str, "trace"))
1317			type = PERF_TYPE_TRACEPOINT;
1318		else if (!strcmp(str, "raw"))
1319			type = PERF_TYPE_RAW;
1320		else if (!strcmp(str, "break"))
1321			type = PERF_TYPE_BREAKPOINT;
1322		else {
1323			fprintf(stderr, "Invalid event type in field string.\n");
1324			rc = -EINVAL;
1325			goto out;
1326		}
1327
1328		if (output[type].user_set)
1329			pr_warning("Overriding previous field request for %s events.\n",
1330				   event_type(type));
1331
1332		output[type].fields = 0;
1333		output[type].user_set = true;
1334		output[type].wildcard_set = false;
1335
1336	} else {
1337		tok = str;
1338		if (strlen(str) == 0) {
1339			fprintf(stderr,
1340				"Cannot set fields to 'none' for all event types.\n");
1341			rc = -EINVAL;
1342			goto out;
1343		}
1344
1345		if (output_set_by_user())
1346			pr_warning("Overriding previous field request for all events.\n");
1347
1348		for (j = 0; j < PERF_TYPE_MAX; ++j) {
1349			output[j].fields = 0;
1350			output[j].user_set = true;
1351			output[j].wildcard_set = true;
1352		}
1353	}
1354
1355	for (tok = strtok(tok, ","); tok; tok = strtok(NULL, ",")) {
1356		for (i = 0; i < imax; ++i) {
1357			if (strcmp(tok, all_output_options[i].str) == 0)
1358				break;
1359		}
1360		if (i == imax && strcmp(tok, "flags") == 0) {
1361			print_flags = true;
1362			continue;
1363		}
1364		if (i == imax) {
1365			fprintf(stderr, "Invalid field requested.\n");
1366			rc = -EINVAL;
1367			goto out;
1368		}
1369
1370		if (type == -1) {
1371			/* add user option to all events types for
1372			 * which it is valid
1373			 */
1374			for (j = 0; j < PERF_TYPE_MAX; ++j) {
1375				if (output[j].invalid_fields & all_output_options[i].field) {
1376					pr_warning("\'%s\' not valid for %s events. Ignoring.\n",
1377						   all_output_options[i].str, event_type(j));
1378				} else
1379					output[j].fields |= all_output_options[i].field;
1380			}
1381		} else {
1382			if (output[type].invalid_fields & all_output_options[i].field) {
1383				fprintf(stderr, "\'%s\' not valid for %s events.\n",
1384					 all_output_options[i].str, event_type(type));
1385
1386				rc = -EINVAL;
1387				goto out;
1388			}
1389			output[type].fields |= all_output_options[i].field;
1390		}
1391	}
1392
1393	if (type >= 0) {
1394		if (output[type].fields == 0) {
1395			pr_debug("No fields requested for %s type. "
1396				 "Events will not be displayed.\n", event_type(type));
1397		}
1398	}
1399
1400out:
1401	free(str);
1402	return rc;
1403}
1404
1405/* Helper function for filesystems that return a dent->d_type DT_UNKNOWN */
1406static int is_directory(const char *base_path, const struct dirent *dent)
1407{
1408	char path[PATH_MAX];
1409	struct stat st;
1410
1411	sprintf(path, "%s/%s", base_path, dent->d_name);
1412	if (stat(path, &st))
1413		return 0;
1414
1415	return S_ISDIR(st.st_mode);
1416}
1417
1418#define for_each_lang(scripts_path, scripts_dir, lang_dirent)		\
1419	while ((lang_dirent = readdir(scripts_dir)) != NULL)		\
1420		if ((lang_dirent->d_type == DT_DIR ||			\
1421		     (lang_dirent->d_type == DT_UNKNOWN &&		\
1422		      is_directory(scripts_path, lang_dirent))) &&	\
1423		    (strcmp(lang_dirent->d_name, ".")) &&		\
1424		    (strcmp(lang_dirent->d_name, "..")))
1425
1426#define for_each_script(lang_path, lang_dir, script_dirent)		\
1427	while ((script_dirent = readdir(lang_dir)) != NULL)		\
1428		if (script_dirent->d_type != DT_DIR &&			\
1429		    (script_dirent->d_type != DT_UNKNOWN ||		\
1430		     !is_directory(lang_path, script_dirent)))
1431
1432
1433#define RECORD_SUFFIX			"-record"
1434#define REPORT_SUFFIX			"-report"
1435
1436struct script_desc {
1437	struct list_head	node;
1438	char			*name;
1439	char			*half_liner;
1440	char			*args;
1441};
1442
1443static LIST_HEAD(script_descs);
1444
1445static struct script_desc *script_desc__new(const char *name)
1446{
1447	struct script_desc *s = zalloc(sizeof(*s));
1448
1449	if (s != NULL && name)
1450		s->name = strdup(name);
1451
1452	return s;
1453}
1454
1455static void script_desc__delete(struct script_desc *s)
1456{
1457	zfree(&s->name);
1458	zfree(&s->half_liner);
1459	zfree(&s->args);
1460	free(s);
1461}
1462
1463static void script_desc__add(struct script_desc *s)
1464{
1465	list_add_tail(&s->node, &script_descs);
1466}
1467
1468static struct script_desc *script_desc__find(const char *name)
1469{
1470	struct script_desc *s;
1471
1472	list_for_each_entry(s, &script_descs, node)
1473		if (strcasecmp(s->name, name) == 0)
1474			return s;
1475	return NULL;
1476}
1477
1478static struct script_desc *script_desc__findnew(const char *name)
1479{
1480	struct script_desc *s = script_desc__find(name);
1481
1482	if (s)
1483		return s;
1484
1485	s = script_desc__new(name);
1486	if (!s)
1487		goto out_delete_desc;
1488
1489	script_desc__add(s);
1490
1491	return s;
1492
1493out_delete_desc:
1494	script_desc__delete(s);
1495
1496	return NULL;
1497}
1498
1499static const char *ends_with(const char *str, const char *suffix)
1500{
1501	size_t suffix_len = strlen(suffix);
1502	const char *p = str;
1503
1504	if (strlen(str) > suffix_len) {
1505		p = str + strlen(str) - suffix_len;
1506		if (!strncmp(p, suffix, suffix_len))
1507			return p;
1508	}
1509
1510	return NULL;
1511}
1512
1513static int read_script_info(struct script_desc *desc, const char *filename)
1514{
1515	char line[BUFSIZ], *p;
1516	FILE *fp;
1517
1518	fp = fopen(filename, "r");
1519	if (!fp)
1520		return -1;
1521
1522	while (fgets(line, sizeof(line), fp)) {
1523		p = ltrim(line);
1524		if (strlen(p) == 0)
1525			continue;
1526		if (*p != '#')
1527			continue;
1528		p++;
1529		if (strlen(p) && *p == '!')
1530			continue;
1531
1532		p = ltrim(p);
1533		if (strlen(p) && p[strlen(p) - 1] == '\n')
1534			p[strlen(p) - 1] = '\0';
1535
1536		if (!strncmp(p, "description:", strlen("description:"))) {
1537			p += strlen("description:");
1538			desc->half_liner = strdup(ltrim(p));
1539			continue;
1540		}
1541
1542		if (!strncmp(p, "args:", strlen("args:"))) {
1543			p += strlen("args:");
1544			desc->args = strdup(ltrim(p));
1545			continue;
1546		}
1547	}
1548
1549	fclose(fp);
1550
1551	return 0;
1552}
1553
1554static char *get_script_root(struct dirent *script_dirent, const char *suffix)
1555{
1556	char *script_root, *str;
1557
1558	script_root = strdup(script_dirent->d_name);
1559	if (!script_root)
1560		return NULL;
1561
1562	str = (char *)ends_with(script_root, suffix);
1563	if (!str) {
1564		free(script_root);
1565		return NULL;
1566	}
1567
1568	*str = '\0';
1569	return script_root;
1570}
1571
1572static int list_available_scripts(const struct option *opt __maybe_unused,
1573				  const char *s __maybe_unused,
1574				  int unset __maybe_unused)
1575{
1576	struct dirent *script_dirent, *lang_dirent;
1577	char scripts_path[MAXPATHLEN];
1578	DIR *scripts_dir, *lang_dir;
1579	char script_path[MAXPATHLEN];
1580	char lang_path[MAXPATHLEN];
1581	struct script_desc *desc;
1582	char first_half[BUFSIZ];
1583	char *script_root;
1584
1585	snprintf(scripts_path, MAXPATHLEN, "%s/scripts", get_argv_exec_path());
1586
1587	scripts_dir = opendir(scripts_path);
1588	if (!scripts_dir)
1589		return -1;
 
 
 
 
 
1590
1591	for_each_lang(scripts_path, scripts_dir, lang_dirent) {
1592		snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path,
1593			 lang_dirent->d_name);
1594		lang_dir = opendir(lang_path);
1595		if (!lang_dir)
1596			continue;
1597
1598		for_each_script(lang_path, lang_dir, script_dirent) {
1599			script_root = get_script_root(script_dirent, REPORT_SUFFIX);
1600			if (script_root) {
1601				desc = script_desc__findnew(script_root);
1602				snprintf(script_path, MAXPATHLEN, "%s/%s",
1603					 lang_path, script_dirent->d_name);
1604				read_script_info(desc, script_path);
1605				free(script_root);
1606			}
1607		}
1608	}
1609
1610	fprintf(stdout, "List of available trace scripts:\n");
1611	list_for_each_entry(desc, &script_descs, node) {
1612		sprintf(first_half, "%s %s", desc->name,
1613			desc->args ? desc->args : "");
1614		fprintf(stdout, "  %-36s %s\n", first_half,
1615			desc->half_liner ? desc->half_liner : "");
1616	}
1617
1618	exit(0);
1619}
1620
1621/*
1622 * Some scripts specify the required events in their "xxx-record" file,
1623 * this function will check if the events in perf.data match those
1624 * mentioned in the "xxx-record".
1625 *
1626 * Fixme: All existing "xxx-record" are all in good formats "-e event ",
1627 * which is covered well now. And new parsing code should be added to
1628 * cover the future complexing formats like event groups etc.
1629 */
1630static int check_ev_match(char *dir_name, char *scriptname,
1631			struct perf_session *session)
1632{
1633	char filename[MAXPATHLEN], evname[128];
1634	char line[BUFSIZ], *p;
1635	struct perf_evsel *pos;
1636	int match, len;
1637	FILE *fp;
1638
1639	sprintf(filename, "%s/bin/%s-record", dir_name, scriptname);
1640
1641	fp = fopen(filename, "r");
1642	if (!fp)
1643		return -1;
1644
1645	while (fgets(line, sizeof(line), fp)) {
1646		p = ltrim(line);
1647		if (*p == '#')
1648			continue;
1649
1650		while (strlen(p)) {
1651			p = strstr(p, "-e");
1652			if (!p)
1653				break;
1654
1655			p += 2;
1656			p = ltrim(p);
1657			len = strcspn(p, " \t");
1658			if (!len)
1659				break;
1660
1661			snprintf(evname, len + 1, "%s", p);
1662
1663			match = 0;
1664			evlist__for_each(session->evlist, pos) {
1665				if (!strcmp(perf_evsel__name(pos), evname)) {
1666					match = 1;
1667					break;
1668				}
1669			}
1670
1671			if (!match) {
1672				fclose(fp);
1673				return -1;
1674			}
1675		}
1676	}
1677
1678	fclose(fp);
1679	return 0;
1680}
1681
1682/*
1683 * Return -1 if none is found, otherwise the actual scripts number.
1684 *
1685 * Currently the only user of this function is the script browser, which
1686 * will list all statically runnable scripts, select one, execute it and
1687 * show the output in a perf browser.
1688 */
1689int find_scripts(char **scripts_array, char **scripts_path_array)
1690{
1691	struct dirent *script_dirent, *lang_dirent;
1692	char scripts_path[MAXPATHLEN], lang_path[MAXPATHLEN];
1693	DIR *scripts_dir, *lang_dir;
1694	struct perf_session *session;
1695	struct perf_data_file file = {
1696		.path = input_name,
1697		.mode = PERF_DATA_MODE_READ,
1698	};
1699	char *temp;
1700	int i = 0;
1701
1702	session = perf_session__new(&file, false, NULL);
1703	if (!session)
1704		return -1;
1705
1706	snprintf(scripts_path, MAXPATHLEN, "%s/scripts", get_argv_exec_path());
1707
1708	scripts_dir = opendir(scripts_path);
1709	if (!scripts_dir) {
1710		perf_session__delete(session);
1711		return -1;
1712	}
1713
1714	for_each_lang(scripts_path, scripts_dir, lang_dirent) {
1715		snprintf(lang_path, MAXPATHLEN, "%s/%s", scripts_path,
1716			 lang_dirent->d_name);
1717#ifdef NO_LIBPERL
1718		if (strstr(lang_path, "perl"))
1719			continue;
1720#endif
1721#ifdef NO_LIBPYTHON
1722		if (strstr(lang_path, "python"))
1723			continue;
1724#endif
1725
1726		lang_dir = opendir(lang_path);
1727		if (!lang_dir)
1728			continue;
1729
1730		for_each_script(lang_path, lang_dir, script_dirent) {
1731			/* Skip those real time scripts: xxxtop.p[yl] */
1732			if (strstr(script_dirent->d_name, "top."))
1733				continue;
1734			sprintf(scripts_path_array[i], "%s/%s", lang_path,
1735				script_dirent->d_name);
1736			temp = strchr(script_dirent->d_name, '.');
1737			snprintf(scripts_array[i],
1738				(temp - script_dirent->d_name) + 1,
1739				"%s", script_dirent->d_name);
1740
1741			if (check_ev_match(lang_path,
1742					scripts_array[i], session))
1743				continue;
1744
1745			i++;
1746		}
1747		closedir(lang_dir);
1748	}
1749
1750	closedir(scripts_dir);
1751	perf_session__delete(session);
1752	return i;
1753}
1754
1755static char *get_script_path(const char *script_root, const char *suffix)
1756{
1757	struct dirent *script_dirent, *lang_dirent;
1758	char scripts_path[MAXPATHLEN];
1759	char script_path[MAXPATHLEN];
1760	DIR *scripts_dir, *lang_dir;
1761	char lang_path[MAXPATHLEN];
1762	char *__script_root;
1763
1764	snprintf(scripts_path, MAXPATHLEN, "%s/scripts", get_argv_exec_path());
1765
1766	scripts_dir = opendir(scripts_path);
1767	if (!scripts_dir)
1768		return NULL;
1769
1770	for_each_lang(scripts_path, scripts_dir, lang_dirent) {
1771		snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path,
1772			 lang_dirent->d_name);
1773		lang_dir = opendir(lang_path);
1774		if (!lang_dir)
1775			continue;
1776
1777		for_each_script(lang_path, lang_dir, script_dirent) {
1778			__script_root = get_script_root(script_dirent, suffix);
1779			if (__script_root && !strcmp(script_root, __script_root)) {
1780				free(__script_root);
1781				closedir(lang_dir);
1782				closedir(scripts_dir);
1783				snprintf(script_path, MAXPATHLEN, "%s/%s",
1784					 lang_path, script_dirent->d_name);
1785				return strdup(script_path);
1786			}
1787			free(__script_root);
1788		}
1789		closedir(lang_dir);
1790	}
1791	closedir(scripts_dir);
1792
1793	return NULL;
1794}
1795
1796static bool is_top_script(const char *script_path)
1797{
1798	return ends_with(script_path, "top") == NULL ? false : true;
1799}
1800
1801static int has_required_arg(char *script_path)
1802{
1803	struct script_desc *desc;
1804	int n_args = 0;
1805	char *p;
1806
1807	desc = script_desc__new(NULL);
1808
1809	if (read_script_info(desc, script_path))
1810		goto out;
1811
1812	if (!desc->args)
1813		goto out;
1814
1815	for (p = desc->args; *p; p++)
1816		if (*p == '<')
1817			n_args++;
1818out:
1819	script_desc__delete(desc);
1820
1821	return n_args;
1822}
1823
1824static int have_cmd(int argc, const char **argv)
1825{
1826	char **__argv = malloc(sizeof(const char *) * argc);
1827
1828	if (!__argv) {
1829		pr_err("malloc failed\n");
1830		return -1;
1831	}
1832
1833	memcpy(__argv, argv, sizeof(const char *) * argc);
1834	argc = parse_options(argc, (const char **)__argv, record_options,
1835			     NULL, PARSE_OPT_STOP_AT_NON_OPTION);
1836	free(__argv);
1837
1838	system_wide = (argc == 0);
1839
1840	return 0;
1841}
1842
1843static void script__setup_sample_type(struct perf_script *script)
1844{
1845	struct perf_session *session = script->session;
1846	u64 sample_type = perf_evlist__combined_sample_type(session->evlist);
1847
1848	if (symbol_conf.use_callchain || symbol_conf.cumulate_callchain) {
1849		if ((sample_type & PERF_SAMPLE_REGS_USER) &&
1850		    (sample_type & PERF_SAMPLE_STACK_USER))
1851			callchain_param.record_mode = CALLCHAIN_DWARF;
1852		else if (sample_type & PERF_SAMPLE_BRANCH_STACK)
1853			callchain_param.record_mode = CALLCHAIN_LBR;
1854		else
1855			callchain_param.record_mode = CALLCHAIN_FP;
1856	}
1857}
1858
1859static int process_stat_round_event(struct perf_tool *tool __maybe_unused,
1860				    union perf_event *event,
1861				    struct perf_session *session)
1862{
1863	struct stat_round_event *round = &event->stat_round;
1864	struct perf_evsel *counter;
1865
1866	evlist__for_each(session->evlist, counter) {
1867		perf_stat_process_counter(&stat_config, counter);
1868		process_stat(counter, round->time);
1869	}
1870
1871	process_stat_interval(round->time);
1872	return 0;
1873}
1874
1875static int process_stat_config_event(struct perf_tool *tool __maybe_unused,
1876				     union perf_event *event,
1877				     struct perf_session *session __maybe_unused)
1878{
1879	perf_event__read_stat_config(&stat_config, &event->stat_config);
1880	return 0;
1881}
1882
1883static int set_maps(struct perf_script *script)
1884{
1885	struct perf_evlist *evlist = script->session->evlist;
1886
1887	if (!script->cpus || !script->threads)
1888		return 0;
1889
1890	if (WARN_ONCE(script->allocated, "stats double allocation\n"))
1891		return -EINVAL;
1892
1893	perf_evlist__set_maps(evlist, script->cpus, script->threads);
1894
1895	if (perf_evlist__alloc_stats(evlist, true))
1896		return -ENOMEM;
1897
1898	script->allocated = true;
1899	return 0;
1900}
1901
1902static
1903int process_thread_map_event(struct perf_tool *tool,
1904			     union perf_event *event,
1905			     struct perf_session *session __maybe_unused)
1906{
1907	struct perf_script *script = container_of(tool, struct perf_script, tool);
1908
1909	if (script->threads) {
1910		pr_warning("Extra thread map event, ignoring.\n");
1911		return 0;
1912	}
1913
1914	script->threads = thread_map__new_event(&event->thread_map);
1915	if (!script->threads)
1916		return -ENOMEM;
1917
1918	return set_maps(script);
1919}
1920
1921static
1922int process_cpu_map_event(struct perf_tool *tool __maybe_unused,
1923			  union perf_event *event,
1924			  struct perf_session *session __maybe_unused)
1925{
1926	struct perf_script *script = container_of(tool, struct perf_script, tool);
1927
1928	if (script->cpus) {
1929		pr_warning("Extra cpu map event, ignoring.\n");
1930		return 0;
1931	}
1932
1933	script->cpus = cpu_map__new_data(&event->cpu_map.data);
1934	if (!script->cpus)
1935		return -ENOMEM;
1936
1937	return set_maps(script);
1938}
1939
1940int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused)
1941{
1942	bool show_full_info = false;
1943	bool header = false;
1944	bool header_only = false;
1945	bool script_started = false;
1946	char *rec_script_path = NULL;
1947	char *rep_script_path = NULL;
1948	struct perf_session *session;
1949	struct itrace_synth_opts itrace_synth_opts = { .set = false, };
1950	char *script_path = NULL;
1951	const char **__argv;
1952	int i, j, err = 0;
1953	struct perf_script script = {
1954		.tool = {
1955			.sample		 = process_sample_event,
1956			.mmap		 = perf_event__process_mmap,
1957			.mmap2		 = perf_event__process_mmap2,
1958			.comm		 = perf_event__process_comm,
1959			.exit		 = perf_event__process_exit,
1960			.fork		 = perf_event__process_fork,
1961			.attr		 = process_attr,
 
1962			.tracing_data	 = perf_event__process_tracing_data,
1963			.build_id	 = perf_event__process_build_id,
1964			.id_index	 = perf_event__process_id_index,
1965			.auxtrace_info	 = perf_event__process_auxtrace_info,
1966			.auxtrace	 = perf_event__process_auxtrace,
1967			.auxtrace_error	 = perf_event__process_auxtrace_error,
1968			.stat		 = perf_event__process_stat_event,
1969			.stat_round	 = process_stat_round_event,
1970			.stat_config	 = process_stat_config_event,
1971			.thread_map	 = process_thread_map_event,
1972			.cpu_map	 = process_cpu_map_event,
1973			.ordered_events	 = true,
1974			.ordering_requires_timestamps = true,
1975		},
1976	};
1977	struct perf_data_file file = {
1978		.mode = PERF_DATA_MODE_READ,
1979	};
1980	const struct option options[] = {
1981	OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
1982		    "dump raw trace in ASCII"),
1983	OPT_INCR('v', "verbose", &verbose,
1984		 "be more verbose (show symbol address, etc)"),
1985	OPT_BOOLEAN('L', "Latency", &latency_format,
1986		    "show latency attributes (irqs/preemption disabled, etc)"),
1987	OPT_CALLBACK_NOOPT('l', "list", NULL, NULL, "list available scripts",
1988			   list_available_scripts),
1989	OPT_CALLBACK('s', "script", NULL, "name",
1990		     "script file name (lang:script name, script name, or *)",
1991		     parse_scriptname),
1992	OPT_STRING('g', "gen-script", &generate_script_lang, "lang",
1993		   "generate perf-script.xx script in specified language"),
1994	OPT_STRING('i', "input", &input_name, "file", "input file name"),
1995	OPT_BOOLEAN('d', "debug-mode", &debug_mode,
1996		   "do various checks like samples ordering and lost events"),
1997	OPT_BOOLEAN(0, "header", &header, "Show data header."),
1998	OPT_BOOLEAN(0, "header-only", &header_only, "Show only data header."),
1999	OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
2000		   "file", "vmlinux pathname"),
2001	OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name,
2002		   "file", "kallsyms pathname"),
2003	OPT_BOOLEAN('G', "hide-call-graph", &no_callchain,
2004		    "When printing symbols do not display call chain"),
2005	OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory",
2006		    "Look for files with symbols relative to this directory"),
 
2007	OPT_CALLBACK('F', "fields", NULL, "str",
2008		     "comma separated output fields prepend with 'type:'. "
2009		     "Valid types: hw,sw,trace,raw. "
2010		     "Fields: comm,tid,pid,time,cpu,event,trace,ip,sym,dso,"
2011		     "addr,symoff,period,iregs,brstack,brstacksym,flags", parse_output_fields),
 
2012	OPT_BOOLEAN('a', "all-cpus", &system_wide,
2013		    "system-wide collection from all CPUs"),
2014	OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
2015		   "only consider these symbols"),
 
 
2016	OPT_STRING('C', "cpu", &cpu_list, "cpu", "list of cpus to profile"),
2017	OPT_STRING('c', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
2018		   "only display events for these comms"),
2019	OPT_STRING(0, "pid", &symbol_conf.pid_list_str, "pid[,pid...]",
2020		   "only consider symbols in these pids"),
2021	OPT_STRING(0, "tid", &symbol_conf.tid_list_str, "tid[,tid...]",
2022		   "only consider symbols in these tids"),
 
 
 
 
2023	OPT_BOOLEAN('I', "show-info", &show_full_info,
2024		    "display extended information from perf.data file"),
2025	OPT_BOOLEAN('\0', "show-kernel-path", &symbol_conf.show_kernel_path,
2026		    "Show the path of [kernel.kallsyms]"),
2027	OPT_BOOLEAN('\0', "show-task-events", &script.show_task_events,
2028		    "Show the fork/comm/exit events"),
2029	OPT_BOOLEAN('\0', "show-mmap-events", &script.show_mmap_events,
2030		    "Show the mmap events"),
2031	OPT_BOOLEAN('\0', "show-switch-events", &script.show_switch_events,
2032		    "Show context switch events (if recorded)"),
2033	OPT_BOOLEAN('f', "force", &file.force, "don't complain, do it"),
2034	OPT_BOOLEAN(0, "ns", &nanosecs,
2035		    "Use 9 decimal places when displaying time"),
2036	OPT_CALLBACK_OPTARG(0, "itrace", &itrace_synth_opts, NULL, "opts",
2037			    "Instruction Tracing options",
2038			    itrace_parse_synth_opts),
2039	OPT_BOOLEAN(0, "full-source-path", &srcline_full_filename,
2040			"Show full source file name path for source lines"),
2041	OPT_BOOLEAN(0, "demangle", &symbol_conf.demangle,
2042			"Enable symbol demangling"),
2043	OPT_BOOLEAN(0, "demangle-kernel", &symbol_conf.demangle_kernel,
2044			"Enable kernel symbol demangling"),
2045
 
2046	OPT_END()
2047	};
2048	const char * const script_subcommands[] = { "record", "report", NULL };
2049	const char *script_usage[] = {
2050		"perf script [<options>]",
2051		"perf script [<options>] record <script> [<record-options>] <command>",
2052		"perf script [<options>] report <script> [script-args]",
2053		"perf script [<options>] <script> [<record-options>] <command>",
2054		"perf script [<options>] <top-script> [script-args]",
2055		NULL
2056	};
2057
2058	setup_scripting();
2059
2060	argc = parse_options_subcommand(argc, argv, options, script_subcommands, script_usage,
2061			     PARSE_OPT_STOP_AT_NON_OPTION);
2062
2063	file.path = input_name;
2064
2065	if (argc > 1 && !strncmp(argv[0], "rec", strlen("rec"))) {
2066		rec_script_path = get_script_path(argv[1], RECORD_SUFFIX);
2067		if (!rec_script_path)
2068			return cmd_record(argc, argv, NULL);
2069	}
2070
2071	if (argc > 1 && !strncmp(argv[0], "rep", strlen("rep"))) {
2072		rep_script_path = get_script_path(argv[1], REPORT_SUFFIX);
2073		if (!rep_script_path) {
2074			fprintf(stderr,
2075				"Please specify a valid report script"
2076				"(see 'perf script -l' for listing)\n");
2077			return -1;
2078		}
2079	}
2080
2081	if (itrace_synth_opts.callchain &&
2082	    itrace_synth_opts.callchain_sz > scripting_max_stack)
2083		scripting_max_stack = itrace_synth_opts.callchain_sz;
2084
2085	/* make sure PERF_EXEC_PATH is set for scripts */
2086	set_argv_exec_path(get_argv_exec_path());
2087
2088	if (argc && !script_name && !rec_script_path && !rep_script_path) {
2089		int live_pipe[2];
2090		int rep_args;
2091		pid_t pid;
2092
2093		rec_script_path = get_script_path(argv[0], RECORD_SUFFIX);
2094		rep_script_path = get_script_path(argv[0], REPORT_SUFFIX);
2095
2096		if (!rec_script_path && !rep_script_path) {
2097			usage_with_options_msg(script_usage, options,
2098				"Couldn't find script `%s'\n\n See perf"
2099				" script -l for available scripts.\n", argv[0]);
2100		}
2101
2102		if (is_top_script(argv[0])) {
2103			rep_args = argc - 1;
2104		} else {
2105			int rec_args;
2106
2107			rep_args = has_required_arg(rep_script_path);
2108			rec_args = (argc - 1) - rep_args;
2109			if (rec_args < 0) {
2110				usage_with_options_msg(script_usage, options,
2111					"`%s' script requires options."
2112					"\n\n See perf script -l for available "
2113					"scripts and options.\n", argv[0]);
2114			}
2115		}
2116
2117		if (pipe(live_pipe) < 0) {
2118			perror("failed to create pipe");
2119			return -1;
2120		}
2121
2122		pid = fork();
2123		if (pid < 0) {
2124			perror("failed to fork");
2125			return -1;
2126		}
2127
2128		if (!pid) {
2129			j = 0;
2130
2131			dup2(live_pipe[1], 1);
2132			close(live_pipe[0]);
2133
2134			if (is_top_script(argv[0])) {
2135				system_wide = true;
2136			} else if (!system_wide) {
2137				if (have_cmd(argc - rep_args, &argv[rep_args]) != 0) {
2138					err = -1;
2139					goto out;
2140				}
2141			}
2142
2143			__argv = malloc((argc + 6) * sizeof(const char *));
2144			if (!__argv) {
2145				pr_err("malloc failed\n");
2146				err = -ENOMEM;
2147				goto out;
2148			}
2149
2150			__argv[j++] = "/bin/sh";
2151			__argv[j++] = rec_script_path;
2152			if (system_wide)
2153				__argv[j++] = "-a";
2154			__argv[j++] = "-q";
2155			__argv[j++] = "-o";
2156			__argv[j++] = "-";
2157			for (i = rep_args + 1; i < argc; i++)
2158				__argv[j++] = argv[i];
2159			__argv[j++] = NULL;
2160
2161			execvp("/bin/sh", (char **)__argv);
2162			free(__argv);
2163			exit(-1);
2164		}
2165
2166		dup2(live_pipe[0], 0);
2167		close(live_pipe[1]);
2168
2169		__argv = malloc((argc + 4) * sizeof(const char *));
2170		if (!__argv) {
2171			pr_err("malloc failed\n");
2172			err = -ENOMEM;
2173			goto out;
2174		}
2175
2176		j = 0;
2177		__argv[j++] = "/bin/sh";
2178		__argv[j++] = rep_script_path;
2179		for (i = 1; i < rep_args + 1; i++)
2180			__argv[j++] = argv[i];
2181		__argv[j++] = "-i";
2182		__argv[j++] = "-";
2183		__argv[j++] = NULL;
2184
2185		execvp("/bin/sh", (char **)__argv);
2186		free(__argv);
2187		exit(-1);
2188	}
2189
2190	if (rec_script_path)
2191		script_path = rec_script_path;
2192	if (rep_script_path)
2193		script_path = rep_script_path;
2194
2195	if (script_path) {
2196		j = 0;
2197
2198		if (!rec_script_path)
2199			system_wide = false;
2200		else if (!system_wide) {
2201			if (have_cmd(argc - 1, &argv[1]) != 0) {
2202				err = -1;
2203				goto out;
2204			}
2205		}
2206
2207		__argv = malloc((argc + 2) * sizeof(const char *));
2208		if (!__argv) {
2209			pr_err("malloc failed\n");
2210			err = -ENOMEM;
2211			goto out;
2212		}
2213
2214		__argv[j++] = "/bin/sh";
2215		__argv[j++] = script_path;
2216		if (system_wide)
2217			__argv[j++] = "-a";
2218		for (i = 2; i < argc; i++)
2219			__argv[j++] = argv[i];
2220		__argv[j++] = NULL;
2221
2222		execvp("/bin/sh", (char **)__argv);
2223		free(__argv);
2224		exit(-1);
2225	}
2226
2227	if (!script_name)
2228		setup_pager();
2229
2230	session = perf_session__new(&file, false, &script.tool);
2231	if (session == NULL)
2232		return -1;
2233
2234	if (header || header_only) {
2235		perf_session__fprintf_info(session, stdout, show_full_info);
2236		if (header_only)
2237			goto out_delete;
2238	}
2239
2240	if (symbol__init(&session->header.env) < 0)
2241		goto out_delete;
2242
2243	script.session = session;
2244	script__setup_sample_type(&script);
2245
 
 
 
2246	session->itrace_synth_opts = &itrace_synth_opts;
2247
2248	if (cpu_list) {
2249		err = perf_session__cpu_bitmap(session, cpu_list, cpu_bitmap);
2250		if (err < 0)
2251			goto out_delete;
2252	}
2253
2254	if (!no_callchain)
2255		symbol_conf.use_callchain = true;
2256	else
2257		symbol_conf.use_callchain = false;
2258
2259	if (session->tevent.pevent &&
2260	    pevent_set_function_resolver(session->tevent.pevent,
2261					 machine__resolve_kernel_addr,
2262					 &session->machines.host) < 0) {
2263		pr_err("%s: failed to set libtraceevent function resolver\n", __func__);
2264		return -1;
2265	}
2266
2267	if (generate_script_lang) {
2268		struct stat perf_stat;
2269		int input;
2270
2271		if (output_set_by_user()) {
2272			fprintf(stderr,
2273				"custom fields not supported for generated scripts");
2274			err = -EINVAL;
2275			goto out_delete;
2276		}
2277
2278		input = open(file.path, O_RDONLY);	/* input_name */
2279		if (input < 0) {
2280			err = -errno;
2281			perror("failed to open file");
2282			goto out_delete;
2283		}
2284
2285		err = fstat(input, &perf_stat);
2286		if (err < 0) {
2287			perror("failed to stat file");
2288			goto out_delete;
2289		}
2290
2291		if (!perf_stat.st_size) {
2292			fprintf(stderr, "zero-sized file, nothing to do!\n");
2293			goto out_delete;
2294		}
2295
2296		scripting_ops = script_spec__lookup(generate_script_lang);
2297		if (!scripting_ops) {
2298			fprintf(stderr, "invalid language specifier");
2299			err = -ENOENT;
2300			goto out_delete;
2301		}
2302
2303		err = scripting_ops->generate_script(session->tevent.pevent,
2304						     "perf-script");
2305		goto out_delete;
2306	}
2307
2308	if (script_name) {
2309		err = scripting_ops->start_script(script_name, argc, argv);
2310		if (err)
2311			goto out_delete;
2312		pr_debug("perf script started with script %s\n\n", script_name);
2313		script_started = true;
2314	}
2315
2316
2317	err = perf_session__check_output_opt(session);
2318	if (err < 0)
2319		goto out_delete;
 
 
 
 
 
 
2320
2321	err = __cmd_script(&script);
2322
2323	flush_scripting();
2324
2325out_delete:
2326	perf_evlist__free_stats(session->evlist);
2327	perf_session__delete(session);
2328
2329	if (script_started)
2330		cleanup_scripting();
2331out:
2332	return err;
2333}