builtin-script.c 57.8 KB
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Frederic Weisbecker 已提交
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#include "builtin.h"

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#include "perf.h"
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#include "util/cache.h"
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#include "util/debug.h"
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#include <subcmd/exec-cmd.h>
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#include "util/header.h"
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#include <subcmd/parse-options.h>
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#include "util/perf_regs.h"
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#include "util/session.h"
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#include "util/tool.h"
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#include "util/symbol.h"
#include "util/thread.h"
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#include "util/trace-event.h"
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#include "util/util.h"
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#include "util/evlist.h"
#include "util/evsel.h"
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#include "util/sort.h"
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#include "util/data.h"
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#include "util/auxtrace.h"
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#include "util/cpumap.h"
#include "util/thread_map.h"
#include "util/stat.h"
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#include <linux/bitmap.h>
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#include "asm/bug.h"
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#include "util/mem-events.h"
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static char const		*script_name;
static char const		*generate_script_lang;
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static bool			debug_mode;
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static u64			last_timestamp;
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static u64			nr_unordered;
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static bool			no_callchain;
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static bool			latency_format;
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static bool			system_wide;
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static bool			print_flags;
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static bool			nanosecs;
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static const char		*cpu_list;
static DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
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static struct perf_stat_config	stat_config;
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unsigned int scripting_max_stack = PERF_MAX_STACK_DEPTH;
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enum perf_output_field {
	PERF_OUTPUT_COMM            = 1U << 0,
	PERF_OUTPUT_TID             = 1U << 1,
	PERF_OUTPUT_PID             = 1U << 2,
	PERF_OUTPUT_TIME            = 1U << 3,
	PERF_OUTPUT_CPU             = 1U << 4,
	PERF_OUTPUT_EVNAME          = 1U << 5,
	PERF_OUTPUT_TRACE           = 1U << 6,
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	PERF_OUTPUT_IP              = 1U << 7,
	PERF_OUTPUT_SYM             = 1U << 8,
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	PERF_OUTPUT_DSO             = 1U << 9,
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	PERF_OUTPUT_ADDR            = 1U << 10,
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	PERF_OUTPUT_SYMOFFSET       = 1U << 11,
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	PERF_OUTPUT_SRCLINE         = 1U << 12,
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	PERF_OUTPUT_PERIOD          = 1U << 13,
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	PERF_OUTPUT_IREGS	    = 1U << 14,
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	PERF_OUTPUT_BRSTACK	    = 1U << 15,
	PERF_OUTPUT_BRSTACKSYM	    = 1U << 16,
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	PERF_OUTPUT_DATA_SRC	    = 1U << 17,
	PERF_OUTPUT_WEIGHT	    = 1U << 18,
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	PERF_OUTPUT_BPF_OUTPUT	    = 1U << 19,
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};

struct output_option {
	const char *str;
	enum perf_output_field field;
} all_output_options[] = {
	{.str = "comm",  .field = PERF_OUTPUT_COMM},
	{.str = "tid",   .field = PERF_OUTPUT_TID},
	{.str = "pid",   .field = PERF_OUTPUT_PID},
	{.str = "time",  .field = PERF_OUTPUT_TIME},
	{.str = "cpu",   .field = PERF_OUTPUT_CPU},
	{.str = "event", .field = PERF_OUTPUT_EVNAME},
	{.str = "trace", .field = PERF_OUTPUT_TRACE},
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	{.str = "ip",    .field = PERF_OUTPUT_IP},
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	{.str = "sym",   .field = PERF_OUTPUT_SYM},
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	{.str = "dso",   .field = PERF_OUTPUT_DSO},
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	{.str = "addr",  .field = PERF_OUTPUT_ADDR},
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	{.str = "symoff", .field = PERF_OUTPUT_SYMOFFSET},
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	{.str = "srcline", .field = PERF_OUTPUT_SRCLINE},
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	{.str = "period", .field = PERF_OUTPUT_PERIOD},
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	{.str = "iregs", .field = PERF_OUTPUT_IREGS},
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	{.str = "brstack", .field = PERF_OUTPUT_BRSTACK},
	{.str = "brstacksym", .field = PERF_OUTPUT_BRSTACKSYM},
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	{.str = "data_src", .field = PERF_OUTPUT_DATA_SRC},
	{.str = "weight",   .field = PERF_OUTPUT_WEIGHT},
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	{.str = "bpf-output",   .field = PERF_OUTPUT_BPF_OUTPUT},
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};

/* default set to maintain compatibility with current format */
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static struct {
	bool user_set;
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	bool wildcard_set;
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	unsigned int print_ip_opts;
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	u64 fields;
	u64 invalid_fields;
} output[PERF_TYPE_MAX] = {

	[PERF_TYPE_HARDWARE] = {
		.user_set = false,

		.fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
			      PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
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			      PERF_OUTPUT_EVNAME | PERF_OUTPUT_IP |
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			      PERF_OUTPUT_SYM | PERF_OUTPUT_DSO |
			      PERF_OUTPUT_PERIOD,
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		.invalid_fields = PERF_OUTPUT_TRACE | PERF_OUTPUT_BPF_OUTPUT,
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	},

	[PERF_TYPE_SOFTWARE] = {
		.user_set = false,

		.fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
			      PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
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			      PERF_OUTPUT_EVNAME | PERF_OUTPUT_IP |
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			      PERF_OUTPUT_SYM | PERF_OUTPUT_DSO |
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			      PERF_OUTPUT_PERIOD | PERF_OUTPUT_BPF_OUTPUT,
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		.invalid_fields = PERF_OUTPUT_TRACE,
	},

	[PERF_TYPE_TRACEPOINT] = {
		.user_set = false,

		.fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
				  PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
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				  PERF_OUTPUT_EVNAME | PERF_OUTPUT_TRACE
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	},
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	[PERF_TYPE_RAW] = {
		.user_set = false,

		.fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
			      PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
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			      PERF_OUTPUT_EVNAME | PERF_OUTPUT_IP |
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			      PERF_OUTPUT_SYM | PERF_OUTPUT_DSO |
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			      PERF_OUTPUT_PERIOD |  PERF_OUTPUT_ADDR |
			      PERF_OUTPUT_DATA_SRC | PERF_OUTPUT_WEIGHT,
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		.invalid_fields = PERF_OUTPUT_TRACE | PERF_OUTPUT_BPF_OUTPUT,
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	},
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	[PERF_TYPE_BREAKPOINT] = {
		.user_set = false,

		.fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
			      PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
			      PERF_OUTPUT_EVNAME | PERF_OUTPUT_IP |
			      PERF_OUTPUT_SYM | PERF_OUTPUT_DSO |
			      PERF_OUTPUT_PERIOD,

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		.invalid_fields = PERF_OUTPUT_TRACE | PERF_OUTPUT_BPF_OUTPUT,
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	},
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};
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static bool output_set_by_user(void)
{
	int j;
	for (j = 0; j < PERF_TYPE_MAX; ++j) {
		if (output[j].user_set)
			return true;
	}
	return false;
}
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static const char *output_field2str(enum perf_output_field field)
{
	int i, imax = ARRAY_SIZE(all_output_options);
	const char *str = "";

	for (i = 0; i < imax; ++i) {
		if (all_output_options[i].field == field) {
			str = all_output_options[i].str;
			break;
		}
	}
	return str;
}

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#define PRINT_FIELD(x)  (output[attr->type].fields & PERF_OUTPUT_##x)
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static int perf_evsel__do_check_stype(struct perf_evsel *evsel,
				      u64 sample_type, const char *sample_msg,
				      enum perf_output_field field,
				      bool allow_user_set)
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{
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	struct perf_event_attr *attr = &evsel->attr;
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	int type = attr->type;
	const char *evname;

	if (attr->sample_type & sample_type)
		return 0;

	if (output[type].user_set) {
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		if (allow_user_set)
			return 0;
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		evname = perf_evsel__name(evsel);
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		pr_err("Samples for '%s' event do not have %s attribute set. "
		       "Cannot print '%s' field.\n",
		       evname, sample_msg, output_field2str(field));
		return -1;
	}

	/* user did not ask for it explicitly so remove from the default list */
	output[type].fields &= ~field;
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	evname = perf_evsel__name(evsel);
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	pr_debug("Samples for '%s' event do not have %s attribute set. "
		 "Skipping '%s' field.\n",
		 evname, sample_msg, output_field2str(field));

	return 0;
}

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static int perf_evsel__check_stype(struct perf_evsel *evsel,
				   u64 sample_type, const char *sample_msg,
				   enum perf_output_field field)
{
	return perf_evsel__do_check_stype(evsel, sample_type, sample_msg, field,
					  false);
}

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static int perf_evsel__check_attr(struct perf_evsel *evsel,
				  struct perf_session *session)
{
	struct perf_event_attr *attr = &evsel->attr;
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	bool allow_user_set;

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	if (perf_header__has_feat(&session->header, HEADER_STAT))
		return 0;

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	allow_user_set = perf_header__has_feat(&session->header,
					       HEADER_AUXTRACE);
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	if (PRINT_FIELD(TRACE) &&
		!perf_session__has_traces(session, "record -R"))
		return -EINVAL;

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	if (PRINT_FIELD(IP)) {
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		if (perf_evsel__check_stype(evsel, PERF_SAMPLE_IP, "IP",
					    PERF_OUTPUT_IP))
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			return -EINVAL;
	}
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	if (PRINT_FIELD(ADDR) &&
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		perf_evsel__do_check_stype(evsel, PERF_SAMPLE_ADDR, "ADDR",
					   PERF_OUTPUT_ADDR, allow_user_set))
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		return -EINVAL;

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	if (PRINT_FIELD(DATA_SRC) &&
		perf_evsel__check_stype(evsel, PERF_SAMPLE_DATA_SRC, "DATA_SRC",
					PERF_OUTPUT_DATA_SRC))
		return -EINVAL;

	if (PRINT_FIELD(WEIGHT) &&
		perf_evsel__check_stype(evsel, PERF_SAMPLE_WEIGHT, "WEIGHT",
					PERF_OUTPUT_WEIGHT))
		return -EINVAL;

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	if (PRINT_FIELD(SYM) && !PRINT_FIELD(IP) && !PRINT_FIELD(ADDR)) {
		pr_err("Display of symbols requested but neither sample IP nor "
			   "sample address\nis selected. Hence, no addresses to convert "
		       "to symbols.\n");
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		return -EINVAL;
	}
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	if (PRINT_FIELD(SYMOFFSET) && !PRINT_FIELD(SYM)) {
		pr_err("Display of offsets requested but symbol is not"
		       "selected.\n");
		return -EINVAL;
	}
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	if (PRINT_FIELD(DSO) && !PRINT_FIELD(IP) && !PRINT_FIELD(ADDR)) {
		pr_err("Display of DSO requested but neither sample IP nor "
			   "sample address\nis selected. Hence, no addresses to convert "
		       "to DSO.\n");
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		return -EINVAL;
	}
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	if (PRINT_FIELD(SRCLINE) && !PRINT_FIELD(IP)) {
		pr_err("Display of source line number requested but sample IP is not\n"
		       "selected. Hence, no address to lookup the source line number.\n");
		return -EINVAL;
	}
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	if ((PRINT_FIELD(PID) || PRINT_FIELD(TID)) &&
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		perf_evsel__check_stype(evsel, PERF_SAMPLE_TID, "TID",
					PERF_OUTPUT_TID|PERF_OUTPUT_PID))
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		return -EINVAL;

	if (PRINT_FIELD(TIME) &&
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		perf_evsel__check_stype(evsel, PERF_SAMPLE_TIME, "TIME",
					PERF_OUTPUT_TIME))
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		return -EINVAL;

	if (PRINT_FIELD(CPU) &&
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		perf_evsel__do_check_stype(evsel, PERF_SAMPLE_CPU, "CPU",
					   PERF_OUTPUT_CPU, allow_user_set))
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		return -EINVAL;
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	if (PRINT_FIELD(PERIOD) &&
		perf_evsel__check_stype(evsel, PERF_SAMPLE_PERIOD, "PERIOD",
					PERF_OUTPUT_PERIOD))
		return -EINVAL;

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	if (PRINT_FIELD(IREGS) &&
		perf_evsel__check_stype(evsel, PERF_SAMPLE_REGS_INTR, "IREGS",
					PERF_OUTPUT_IREGS))
		return -EINVAL;

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	return 0;
}

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static void set_print_ip_opts(struct perf_event_attr *attr)
{
	unsigned int type = attr->type;

	output[type].print_ip_opts = 0;
	if (PRINT_FIELD(IP))
		output[type].print_ip_opts |= PRINT_IP_OPT_IP;

	if (PRINT_FIELD(SYM))
		output[type].print_ip_opts |= PRINT_IP_OPT_SYM;

	if (PRINT_FIELD(DSO))
		output[type].print_ip_opts |= PRINT_IP_OPT_DSO;

	if (PRINT_FIELD(SYMOFFSET))
		output[type].print_ip_opts |= PRINT_IP_OPT_SYMOFFSET;
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	if (PRINT_FIELD(SRCLINE))
		output[type].print_ip_opts |= PRINT_IP_OPT_SRCLINE;
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}

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/*
 * verify all user requested events exist and the samples
 * have the expected data
 */
static int perf_session__check_output_opt(struct perf_session *session)
{
	int j;
	struct perf_evsel *evsel;

	for (j = 0; j < PERF_TYPE_MAX; ++j) {
		evsel = perf_session__find_first_evtype(session, j);

		/*
		 * even if fields is set to 0 (ie., show nothing) event must
		 * exist if user explicitly includes it on the command line
		 */
		if (!evsel && output[j].user_set && !output[j].wildcard_set) {
			pr_err("%s events do not exist. "
			       "Remove corresponding -f option to proceed.\n",
			       event_type(j));
			return -1;
		}

		if (evsel && output[j].fields &&
			perf_evsel__check_attr(evsel, session))
			return -1;
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		if (evsel == NULL)
			continue;

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		set_print_ip_opts(&evsel->attr);
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	}

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	if (!no_callchain) {
		bool use_callchain = false;

		evlist__for_each(session->evlist, evsel) {
			if (evsel->attr.sample_type & PERF_SAMPLE_CALLCHAIN) {
				use_callchain = true;
				break;
			}
		}
		if (!use_callchain)
			symbol_conf.use_callchain = false;
	}

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	/*
	 * set default for tracepoints to print symbols only
	 * if callchains are present
	 */
	if (symbol_conf.use_callchain &&
	    !output[PERF_TYPE_TRACEPOINT].user_set) {
		struct perf_event_attr *attr;

		j = PERF_TYPE_TRACEPOINT;
		evsel = perf_session__find_first_evtype(session, j);
		if (evsel == NULL)
			goto out;

		attr = &evsel->attr;

		if (attr->sample_type & PERF_SAMPLE_CALLCHAIN) {
			output[j].fields |= PERF_OUTPUT_IP;
			output[j].fields |= PERF_OUTPUT_SYM;
			output[j].fields |= PERF_OUTPUT_DSO;
			set_print_ip_opts(attr);
		}
	}

out:
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	return 0;
}
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static void print_sample_iregs(union perf_event *event __maybe_unused,
			  struct perf_sample *sample,
			  struct thread *thread __maybe_unused,
			  struct perf_event_attr *attr)
{
	struct regs_dump *regs = &sample->intr_regs;
	uint64_t mask = attr->sample_regs_intr;
	unsigned i = 0, r;

	if (!regs)
		return;

	for_each_set_bit(r, (unsigned long *) &mask, sizeof(mask) * 8) {
		u64 val = regs->regs[i++];
		printf("%5s:0x%"PRIx64" ", perf_reg_name(r), val);
	}
}

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static void print_sample_start(struct perf_sample *sample,
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			       struct thread *thread,
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			       struct perf_evsel *evsel)
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{
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	struct perf_event_attr *attr = &evsel->attr;
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	unsigned long secs;
	unsigned long usecs;
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	unsigned long long nsecs;

	if (PRINT_FIELD(COMM)) {
		if (latency_format)
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			printf("%8.8s ", thread__comm_str(thread));
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		else if (PRINT_FIELD(IP) && symbol_conf.use_callchain)
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			printf("%s ", thread__comm_str(thread));
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		else
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			printf("%16s ", thread__comm_str(thread));
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	}
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	if (PRINT_FIELD(PID) && PRINT_FIELD(TID))
		printf("%5d/%-5d ", sample->pid, sample->tid);
	else if (PRINT_FIELD(PID))
		printf("%5d ", sample->pid);
	else if (PRINT_FIELD(TID))
		printf("%5d ", sample->tid);

	if (PRINT_FIELD(CPU)) {
		if (latency_format)
			printf("%3d ", sample->cpu);
		else
			printf("[%03d] ", sample->cpu);
	}
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	if (PRINT_FIELD(TIME)) {
		nsecs = sample->time;
		secs = nsecs / NSECS_PER_SEC;
		nsecs -= secs * NSECS_PER_SEC;
		usecs = nsecs / NSECS_PER_USEC;
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		if (nanosecs)
			printf("%5lu.%09llu: ", secs, nsecs);
		else
			printf("%5lu.%06lu: ", secs, usecs);
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	}
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}

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static inline char
mispred_str(struct branch_entry *br)
{
	if (!(br->flags.mispred  || br->flags.predicted))
		return '-';

	return br->flags.predicted ? 'P' : 'M';
}

static void print_sample_brstack(union perf_event *event __maybe_unused,
			  struct perf_sample *sample,
			  struct thread *thread __maybe_unused,
			  struct perf_event_attr *attr __maybe_unused)
{
	struct branch_stack *br = sample->branch_stack;
	u64 i;

	if (!(br && br->nr))
		return;

	for (i = 0; i < br->nr; i++) {
		printf(" 0x%"PRIx64"/0x%"PRIx64"/%c/%c/%c/%d ",
			br->entries[i].from,
			br->entries[i].to,
			mispred_str( br->entries + i),
			br->entries[i].flags.in_tx? 'X' : '-',
			br->entries[i].flags.abort? 'A' : '-',
			br->entries[i].flags.cycles);
	}
}

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static void print_sample_brstacksym(union perf_event *event __maybe_unused,
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			  struct perf_sample *sample,
			  struct thread *thread __maybe_unused,
			  struct perf_event_attr *attr __maybe_unused)
{
	struct branch_stack *br = sample->branch_stack;
	struct addr_location alf, alt;
	u64 i, from, to;

	if (!(br && br->nr))
		return;

	for (i = 0; i < br->nr; i++) {

		memset(&alf, 0, sizeof(alf));
		memset(&alt, 0, sizeof(alt));
		from = br->entries[i].from;
		to   = br->entries[i].to;

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		thread__find_addr_map(thread, sample->cpumode, MAP__FUNCTION, from, &alf);
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		if (alf.map)
			alf.sym = map__find_symbol(alf.map, alf.addr, NULL);

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		thread__find_addr_map(thread, sample->cpumode, MAP__FUNCTION, to, &alt);
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		if (alt.map)
			alt.sym = map__find_symbol(alt.map, alt.addr, NULL);

		symbol__fprintf_symname_offs(alf.sym, &alf, stdout);
		putchar('/');
		symbol__fprintf_symname_offs(alt.sym, &alt, stdout);
		printf("/%c/%c/%c/%d ",
			mispred_str( br->entries + i),
			br->entries[i].flags.in_tx? 'X' : '-',
			br->entries[i].flags.abort? 'A' : '-',
			br->entries[i].flags.cycles);
	}
}


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static void print_sample_addr(union perf_event *event,
			  struct perf_sample *sample,
			  struct thread *thread,
			  struct perf_event_attr *attr)
{
	struct addr_location al;

	printf("%16" PRIx64, sample->addr);

	if (!sample_addr_correlates_sym(attr))
		return;

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	perf_event__preprocess_sample_addr(event, sample, thread, &al);
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	if (PRINT_FIELD(SYM)) {
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		printf(" ");
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		if (PRINT_FIELD(SYMOFFSET))
			symbol__fprintf_symname_offs(al.sym, &al, stdout);
		else
			symbol__fprintf_symname(al.sym, stdout);
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	}

	if (PRINT_FIELD(DSO)) {
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		printf(" (");
		map__fprintf_dsoname(al.map, stdout);
		printf(")");
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	}
}

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static void print_sample_bts(union perf_event *event,
			     struct perf_sample *sample,
			     struct perf_evsel *evsel,
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			     struct thread *thread,
			     struct addr_location *al)
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{
	struct perf_event_attr *attr = &evsel->attr;
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	bool print_srcline_last = false;
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	/* print branch_from information */
	if (PRINT_FIELD(IP)) {
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		unsigned int print_opts = output[attr->type].print_ip_opts;

		if (symbol_conf.use_callchain && sample->callchain) {
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			printf("\n");
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		} else {
			printf(" ");
			if (print_opts & PRINT_IP_OPT_SRCLINE) {
				print_srcline_last = true;
				print_opts &= ~PRINT_IP_OPT_SRCLINE;
			}
		}
		perf_evsel__print_ip(evsel, sample, al, print_opts,
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				     scripting_max_stack);
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	}

	/* print branch_to information */
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	if (PRINT_FIELD(ADDR) ||
	    ((evsel->attr.sample_type & PERF_SAMPLE_ADDR) &&
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	     !output[attr->type].user_set)) {
		printf(" => ");
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		print_sample_addr(event, sample, thread, attr);
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	}
602

603 604 605
	if (print_srcline_last)
		map__fprintf_srcline(al->map, al->addr, "\n  ", stdout);

606 607 608
	printf("\n");
}

609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627
static void print_sample_flags(u32 flags)
{
	const char *chars = PERF_IP_FLAG_CHARS;
	const int n = strlen(PERF_IP_FLAG_CHARS);
	char str[33];
	int i, pos = 0;

	for (i = 0; i < n; i++, flags >>= 1) {
		if (flags & 1)
			str[pos++] = chars[i];
	}
	for (; i < 32; i++, flags >>= 1) {
		if (flags & 1)
			str[pos++] = '?';
	}
	str[pos] = 0;
	printf("  %-4s ", str);
}

628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705
struct printer_data {
	int line_no;
	bool hit_nul;
	bool is_printable;
};

static void
print_sample_bpf_output_printer(enum binary_printer_ops op,
				unsigned int val,
				void *extra)
{
	unsigned char ch = (unsigned char)val;
	struct printer_data *printer_data = extra;

	switch (op) {
	case BINARY_PRINT_DATA_BEGIN:
		printf("\n");
		break;
	case BINARY_PRINT_LINE_BEGIN:
		printf("%17s", !printer_data->line_no ? "BPF output:" :
						        "           ");
		break;
	case BINARY_PRINT_ADDR:
		printf(" %04x:", val);
		break;
	case BINARY_PRINT_NUM_DATA:
		printf(" %02x", val);
		break;
	case BINARY_PRINT_NUM_PAD:
		printf("   ");
		break;
	case BINARY_PRINT_SEP:
		printf("  ");
		break;
	case BINARY_PRINT_CHAR_DATA:
		if (printer_data->hit_nul && ch)
			printer_data->is_printable = false;

		if (!isprint(ch)) {
			printf("%c", '.');

			if (!printer_data->is_printable)
				break;

			if (ch == '\0')
				printer_data->hit_nul = true;
			else
				printer_data->is_printable = false;
		} else {
			printf("%c", ch);
		}
		break;
	case BINARY_PRINT_CHAR_PAD:
		printf(" ");
		break;
	case BINARY_PRINT_LINE_END:
		printf("\n");
		printer_data->line_no++;
		break;
	case BINARY_PRINT_DATA_END:
	default:
		break;
	}
}

static void print_sample_bpf_output(struct perf_sample *sample)
{
	unsigned int nr_bytes = sample->raw_size;
	struct printer_data printer_data = {0, false, true};

	print_binary(sample->raw_data, nr_bytes, 8,
		     print_sample_bpf_output_printer, &printer_data);

	if (printer_data.is_printable && printer_data.hit_nul)
		printf("%17s \"%s\"\n", "BPF string:",
		       (char *)(sample->raw_data));
}

706 707 708 709 710 711
struct perf_script {
	struct perf_tool	tool;
	struct perf_session	*session;
	bool			show_task_events;
	bool			show_mmap_events;
	bool			show_switch_events;
712 713 714
	bool			allocated;
	struct cpu_map		*cpus;
	struct thread_map	*threads;
715
	int			name_width;
716 717
};

718 719 720 721 722 723 724 725 726 727 728 729 730 731
static int perf_evlist__max_name_len(struct perf_evlist *evlist)
{
	struct perf_evsel *evsel;
	int max = 0;

	evlist__for_each(evlist, evsel) {
		int len = strlen(perf_evsel__name(evsel));

		max = MAX(len, max);
	}

	return max;
}

J
Jiri Olsa 已提交
732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748
static size_t data_src__printf(u64 data_src)
{
	struct mem_info mi = { .data_src.val = data_src };
	char decode[100];
	char out[100];
	static int maxlen;
	int len;

	perf_script__meminfo_scnprintf(decode, 100, &mi);

	len = scnprintf(out, 100, "%16" PRIx64 " %s", data_src, decode);
	if (maxlen < len)
		maxlen = len;

	return printf("%-*s", maxlen, out);
}

749
static void process_event(struct perf_script *script, union perf_event *event,
750 751
			  struct perf_sample *sample, struct perf_evsel *evsel,
			  struct addr_location *al)
752
{
753
	struct thread *thread = al->thread;
754
	struct perf_event_attr *attr = &evsel->attr;
755

756
	if (output[attr->type].fields == 0)
757 758
		return;

759
	print_sample_start(sample, thread, evsel);
760

J
Jiri Olsa 已提交
761 762 763
	if (PRINT_FIELD(PERIOD))
		printf("%10" PRIu64 " ", sample->period);

764 765
	if (PRINT_FIELD(EVNAME)) {
		const char *evname = perf_evsel__name(evsel);
766 767 768 769 770 771

		if (!script->name_width)
			script->name_width = perf_evlist__max_name_len(script->session->evlist);

		printf("%*s: ", script->name_width,
		       evname ? evname : "[unknown]");
772 773
	}

774 775 776
	if (print_flags)
		print_sample_flags(sample->flags);

777
	if (is_bts_event(attr)) {
778
		print_sample_bts(event, sample, evsel, thread, al);
779 780 781
		return;
	}

782
	if (PRINT_FIELD(TRACE))
783 784
		event_format__print(evsel->tp_format, sample->cpu,
				    sample->raw_data, sample->raw_size);
785
	if (PRINT_FIELD(ADDR))
786
		print_sample_addr(event, sample, thread, attr);
787

788
	if (PRINT_FIELD(DATA_SRC))
J
Jiri Olsa 已提交
789
		data_src__printf(sample->data_src);
790 791 792 793

	if (PRINT_FIELD(WEIGHT))
		printf("%16" PRIu64, sample->weight);

794
	if (PRINT_FIELD(IP)) {
795 796 797 798
		if (!symbol_conf.use_callchain)
			printf(" ");
		else
			printf("\n");
799

800
		perf_evsel__print_ip(evsel, sample, al,
801
				     output[attr->type].print_ip_opts,
802
				     scripting_max_stack);
803 804
	}

805 806 807
	if (PRINT_FIELD(IREGS))
		print_sample_iregs(event, sample, thread, attr);

808 809 810 811 812
	if (PRINT_FIELD(BRSTACK))
		print_sample_brstack(event, sample, thread, attr);
	else if (PRINT_FIELD(BRSTACKSYM))
		print_sample_brstacksym(event, sample, thread, attr);

813 814 815
	if (perf_evsel__is_bpf_output(evsel) && PRINT_FIELD(BPF_OUTPUT))
		print_sample_bpf_output(sample);

816
	printf("\n");
817 818
}

T
Tom Zanussi 已提交
819 820
static struct scripting_ops	*scripting_ops;

821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854
static void __process_stat(struct perf_evsel *counter, u64 tstamp)
{
	int nthreads = thread_map__nr(counter->threads);
	int ncpus = perf_evsel__nr_cpus(counter);
	int cpu, thread;
	static int header_printed;

	if (counter->system_wide)
		nthreads = 1;

	if (!header_printed) {
		printf("%3s %8s %15s %15s %15s %15s %s\n",
		       "CPU", "THREAD", "VAL", "ENA", "RUN", "TIME", "EVENT");
		header_printed = 1;
	}

	for (thread = 0; thread < nthreads; thread++) {
		for (cpu = 0; cpu < ncpus; cpu++) {
			struct perf_counts_values *counts;

			counts = perf_counts(counter->counts, cpu, thread);

			printf("%3d %8d %15" PRIu64 " %15" PRIu64 " %15" PRIu64 " %15" PRIu64 " %s\n",
				counter->cpus->map[cpu],
				thread_map__pid(counter->threads, thread),
				counts->val,
				counts->ena,
				counts->run,
				tstamp,
				perf_evsel__name(counter));
		}
	}
}

855 856 857 858
static void process_stat(struct perf_evsel *counter, u64 tstamp)
{
	if (scripting_ops && scripting_ops->process_stat)
		scripting_ops->process_stat(&stat_config, counter, tstamp);
859 860
	else
		__process_stat(counter, tstamp);
861 862 863 864 865 866 867 868
}

static void process_stat_interval(u64 tstamp)
{
	if (scripting_ops && scripting_ops->process_stat_interval)
		scripting_ops->process_stat_interval(tstamp);
}

T
Tom Zanussi 已提交
869 870
static void setup_scripting(void)
{
871
	setup_perl_scripting();
872
	setup_python_scripting();
T
Tom Zanussi 已提交
873 874
}

875 876
static int flush_scripting(void)
{
877
	return scripting_ops ? scripting_ops->flush_script() : 0;
878 879
}

T
Tom Zanussi 已提交
880 881
static int cleanup_scripting(void)
{
882
	pr_debug("\nperf script stopped\n");
883

884
	return scripting_ops ? scripting_ops->stop_script() : 0;
T
Tom Zanussi 已提交
885 886
}

887
static int process_sample_event(struct perf_tool *tool,
888
				union perf_event *event,
889
				struct perf_sample *sample,
890
				struct perf_evsel *evsel,
891
				struct machine *machine)
F
Frederic Weisbecker 已提交
892
{
893
	struct perf_script *scr = container_of(tool, struct perf_script, tool);
894
	struct addr_location al;
F
Frederic Weisbecker 已提交
895

896 897 898 899 900 901
	if (debug_mode) {
		if (sample->time < last_timestamp) {
			pr_err("Samples misordered, previous: %" PRIu64
				" this: %" PRIu64 "\n", last_timestamp,
				sample->time);
			nr_unordered++;
902
		}
903 904
		last_timestamp = sample->time;
		return 0;
F
Frederic Weisbecker 已提交
905
	}
906

907
	if (perf_event__preprocess_sample(event, machine, &al, sample) < 0) {
908 909 910 911 912 913
		pr_err("problem processing %d event, skipping it.\n",
		       event->header.type);
		return -1;
	}

	if (al.filtered)
914
		goto out_put;
915

916
	if (cpu_list && !test_bit(sample->cpu, cpu_bitmap))
917
		goto out_put;
918

919 920 921
	if (scripting_ops)
		scripting_ops->process_event(event, sample, evsel, &al);
	else
922
		process_event(scr, event, sample, evsel, &al);
923

924 925
out_put:
	addr_location__put(&al);
F
Frederic Weisbecker 已提交
926 927 928
	return 0;
}

929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946
static int process_attr(struct perf_tool *tool, union perf_event *event,
			struct perf_evlist **pevlist)
{
	struct perf_script *scr = container_of(tool, struct perf_script, tool);
	struct perf_evlist *evlist;
	struct perf_evsel *evsel, *pos;
	int err;

	err = perf_event__process_attr(tool, event, pevlist);
	if (err)
		return err;

	evlist = *pevlist;
	evsel = perf_evlist__last(*pevlist);

	if (evsel->attr.type >= PERF_TYPE_MAX)
		return 0;

947
	evlist__for_each(evlist, pos) {
948 949 950 951 952 953
		if (pos->attr.type == evsel->attr.type && pos != evsel)
			return 0;
	}

	set_print_ip_opts(&evsel->attr);

954 955 956 957
	if (evsel->attr.sample_type)
		err = perf_evsel__check_attr(evsel, scr->session);

	return err;
958 959
}

960 961 962 963 964 965 966 967
static int process_comm_event(struct perf_tool *tool,
			      union perf_event *event,
			      struct perf_sample *sample,
			      struct machine *machine)
{
	struct thread *thread;
	struct perf_script *script = container_of(tool, struct perf_script, tool);
	struct perf_session *session = script->session;
968
	struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id);
969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989
	int ret = -1;

	thread = machine__findnew_thread(machine, event->comm.pid, event->comm.tid);
	if (thread == NULL) {
		pr_debug("problem processing COMM event, skipping it.\n");
		return -1;
	}

	if (perf_event__process_comm(tool, event, sample, machine) < 0)
		goto out;

	if (!evsel->attr.sample_id_all) {
		sample->cpu = 0;
		sample->time = 0;
		sample->tid = event->comm.tid;
		sample->pid = event->comm.pid;
	}
	print_sample_start(sample, thread, evsel);
	perf_event__fprintf(event, stdout);
	ret = 0;
out:
990
	thread__put(thread);
991 992 993 994 995 996 997 998 999 1000 1001
	return ret;
}

static int process_fork_event(struct perf_tool *tool,
			      union perf_event *event,
			      struct perf_sample *sample,
			      struct machine *machine)
{
	struct thread *thread;
	struct perf_script *script = container_of(tool, struct perf_script, tool);
	struct perf_session *session = script->session;
1002
	struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id);
1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020

	if (perf_event__process_fork(tool, event, sample, machine) < 0)
		return -1;

	thread = machine__findnew_thread(machine, event->fork.pid, event->fork.tid);
	if (thread == NULL) {
		pr_debug("problem processing FORK event, skipping it.\n");
		return -1;
	}

	if (!evsel->attr.sample_id_all) {
		sample->cpu = 0;
		sample->time = event->fork.time;
		sample->tid = event->fork.tid;
		sample->pid = event->fork.pid;
	}
	print_sample_start(sample, thread, evsel);
	perf_event__fprintf(event, stdout);
1021
	thread__put(thread);
1022 1023 1024 1025 1026 1027 1028 1029

	return 0;
}
static int process_exit_event(struct perf_tool *tool,
			      union perf_event *event,
			      struct perf_sample *sample,
			      struct machine *machine)
{
1030
	int err = 0;
1031 1032 1033
	struct thread *thread;
	struct perf_script *script = container_of(tool, struct perf_script, tool);
	struct perf_session *session = script->session;
1034
	struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id);
1035 1036 1037 1038 1039 1040 1041 1042 1043 1044

	thread = machine__findnew_thread(machine, event->fork.pid, event->fork.tid);
	if (thread == NULL) {
		pr_debug("problem processing EXIT event, skipping it.\n");
		return -1;
	}

	if (!evsel->attr.sample_id_all) {
		sample->cpu = 0;
		sample->time = 0;
1045 1046
		sample->tid = event->fork.tid;
		sample->pid = event->fork.pid;
1047 1048 1049 1050 1051
	}
	print_sample_start(sample, thread, evsel);
	perf_event__fprintf(event, stdout);

	if (perf_event__process_exit(tool, event, sample, machine) < 0)
1052
		err = -1;
1053

1054 1055
	thread__put(thread);
	return err;
1056 1057
}

1058 1059 1060 1061 1062 1063 1064 1065
static int process_mmap_event(struct perf_tool *tool,
			      union perf_event *event,
			      struct perf_sample *sample,
			      struct machine *machine)
{
	struct thread *thread;
	struct perf_script *script = container_of(tool, struct perf_script, tool);
	struct perf_session *session = script->session;
1066
	struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id);
1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084

	if (perf_event__process_mmap(tool, event, sample, machine) < 0)
		return -1;

	thread = machine__findnew_thread(machine, event->mmap.pid, event->mmap.tid);
	if (thread == NULL) {
		pr_debug("problem processing MMAP event, skipping it.\n");
		return -1;
	}

	if (!evsel->attr.sample_id_all) {
		sample->cpu = 0;
		sample->time = 0;
		sample->tid = event->mmap.tid;
		sample->pid = event->mmap.pid;
	}
	print_sample_start(sample, thread, evsel);
	perf_event__fprintf(event, stdout);
1085
	thread__put(thread);
1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096
	return 0;
}

static int process_mmap2_event(struct perf_tool *tool,
			      union perf_event *event,
			      struct perf_sample *sample,
			      struct machine *machine)
{
	struct thread *thread;
	struct perf_script *script = container_of(tool, struct perf_script, tool);
	struct perf_session *session = script->session;
1097
	struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id);
1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115

	if (perf_event__process_mmap2(tool, event, sample, machine) < 0)
		return -1;

	thread = machine__findnew_thread(machine, event->mmap2.pid, event->mmap2.tid);
	if (thread == NULL) {
		pr_debug("problem processing MMAP2 event, skipping it.\n");
		return -1;
	}

	if (!evsel->attr.sample_id_all) {
		sample->cpu = 0;
		sample->time = 0;
		sample->tid = event->mmap2.tid;
		sample->pid = event->mmap2.pid;
	}
	print_sample_start(sample, thread, evsel);
	perf_event__fprintf(event, stdout);
1116
	thread__put(thread);
1117 1118 1119
	return 0;
}

1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145
static int process_switch_event(struct perf_tool *tool,
				union perf_event *event,
				struct perf_sample *sample,
				struct machine *machine)
{
	struct thread *thread;
	struct perf_script *script = container_of(tool, struct perf_script, tool);
	struct perf_session *session = script->session;
	struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id);

	if (perf_event__process_switch(tool, event, sample, machine) < 0)
		return -1;

	thread = machine__findnew_thread(machine, sample->pid,
					 sample->tid);
	if (thread == NULL) {
		pr_debug("problem processing SWITCH event, skipping it.\n");
		return -1;
	}

	print_sample_start(sample, thread, evsel);
	perf_event__fprintf(event, stdout);
	thread__put(thread);
	return 0;
}

1146
static void sig_handler(int sig __maybe_unused)
1147 1148 1149 1150
{
	session_done = 1;
}

1151
static int __cmd_script(struct perf_script *script)
F
Frederic Weisbecker 已提交
1152
{
1153 1154
	int ret;

1155 1156
	signal(SIGINT, sig_handler);

1157 1158 1159 1160 1161 1162
	/* override event processing functions */
	if (script->show_task_events) {
		script->tool.comm = process_comm_event;
		script->tool.fork = process_fork_event;
		script->tool.exit = process_exit_event;
	}
1163 1164 1165 1166
	if (script->show_mmap_events) {
		script->tool.mmap = process_mmap_event;
		script->tool.mmap2 = process_mmap2_event;
	}
1167 1168
	if (script->show_switch_events)
		script->tool.context_switch = process_switch_event;
1169

1170
	ret = perf_session__process_events(script->session);
1171

1172
	if (debug_mode)
1173
		pr_err("Misordered timestamps: %" PRIu64 "\n", nr_unordered);
1174 1175

	return ret;
F
Frederic Weisbecker 已提交
1176 1177
}

T
Tom Zanussi 已提交
1178 1179 1180 1181 1182 1183
struct script_spec {
	struct list_head	node;
	struct scripting_ops	*ops;
	char			spec[0];
};

1184
static LIST_HEAD(script_specs);
T
Tom Zanussi 已提交
1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221

static struct script_spec *script_spec__new(const char *spec,
					    struct scripting_ops *ops)
{
	struct script_spec *s = malloc(sizeof(*s) + strlen(spec) + 1);

	if (s != NULL) {
		strcpy(s->spec, spec);
		s->ops = ops;
	}

	return s;
}

static void script_spec__add(struct script_spec *s)
{
	list_add_tail(&s->node, &script_specs);
}

static struct script_spec *script_spec__find(const char *spec)
{
	struct script_spec *s;

	list_for_each_entry(s, &script_specs, node)
		if (strcasecmp(s->spec, spec) == 0)
			return s;
	return NULL;
}

int script_spec_register(const char *spec, struct scripting_ops *ops)
{
	struct script_spec *s;

	s = script_spec__find(spec);
	if (s)
		return -1;

1222
	s = script_spec__new(spec, ops);
T
Tom Zanussi 已提交
1223 1224
	if (!s)
		return -1;
1225 1226
	else
		script_spec__add(s);
T
Tom Zanussi 已提交
1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245

	return 0;
}

static struct scripting_ops *script_spec__lookup(const char *spec)
{
	struct script_spec *s = script_spec__find(spec);
	if (!s)
		return NULL;

	return s->ops;
}

static void list_available_languages(void)
{
	struct script_spec *s;

	fprintf(stderr, "\n");
	fprintf(stderr, "Scripting language extensions (used in "
1246
		"perf script -s [spec:]script.[spec]):\n\n");
T
Tom Zanussi 已提交
1247 1248 1249 1250 1251 1252 1253

	list_for_each_entry(s, &script_specs, node)
		fprintf(stderr, "  %-42s [%s]\n", s->spec, s->ops->name);

	fprintf(stderr, "\n");
}

1254 1255
static int parse_scriptname(const struct option *opt __maybe_unused,
			    const char *str, int unset __maybe_unused)
T
Tom Zanussi 已提交
1256 1257 1258 1259 1260
{
	char spec[PATH_MAX];
	const char *script, *ext;
	int len;

1261
	if (strcmp(str, "lang") == 0) {
T
Tom Zanussi 已提交
1262
		list_available_languages();
1263
		exit(0);
T
Tom Zanussi 已提交
1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282
	}

	script = strchr(str, ':');
	if (script) {
		len = script - str;
		if (len >= PATH_MAX) {
			fprintf(stderr, "invalid language specifier");
			return -1;
		}
		strncpy(spec, str, len);
		spec[len] = '\0';
		scripting_ops = script_spec__lookup(spec);
		if (!scripting_ops) {
			fprintf(stderr, "invalid language specifier");
			return -1;
		}
		script++;
	} else {
		script = str;
1283
		ext = strrchr(script, '.');
T
Tom Zanussi 已提交
1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299
		if (!ext) {
			fprintf(stderr, "invalid script extension");
			return -1;
		}
		scripting_ops = script_spec__lookup(++ext);
		if (!scripting_ops) {
			fprintf(stderr, "invalid script extension");
			return -1;
		}
	}

	script_name = strdup(script);

	return 0;
}

1300 1301
static int parse_output_fields(const struct option *opt __maybe_unused,
			    const char *arg, int unset __maybe_unused)
1302 1303
{
	char *tok;
1304
	int i, imax = ARRAY_SIZE(all_output_options);
1305
	int j;
1306 1307
	int rc = 0;
	char *str = strdup(arg);
1308
	int type = -1;
1309 1310 1311 1312

	if (!str)
		return -ENOMEM;

1313 1314 1315
	/* first word can state for which event type the user is specifying
	 * the fields. If no type exists, the specified fields apply to all
	 * event types found in the file minus the invalid fields for a type.
1316
	 */
1317 1318 1319 1320 1321 1322 1323 1324 1325 1326
	tok = strchr(str, ':');
	if (tok) {
		*tok = '\0';
		tok++;
		if (!strcmp(str, "hw"))
			type = PERF_TYPE_HARDWARE;
		else if (!strcmp(str, "sw"))
			type = PERF_TYPE_SOFTWARE;
		else if (!strcmp(str, "trace"))
			type = PERF_TYPE_TRACEPOINT;
1327 1328
		else if (!strcmp(str, "raw"))
			type = PERF_TYPE_RAW;
1329 1330
		else if (!strcmp(str, "break"))
			type = PERF_TYPE_BREAKPOINT;
1331 1332
		else {
			fprintf(stderr, "Invalid event type in field string.\n");
1333 1334
			rc = -EINVAL;
			goto out;
1335 1336 1337 1338 1339 1340 1341 1342
		}

		if (output[type].user_set)
			pr_warning("Overriding previous field request for %s events.\n",
				   event_type(type));

		output[type].fields = 0;
		output[type].user_set = true;
1343
		output[type].wildcard_set = false;
1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359

	} else {
		tok = str;
		if (strlen(str) == 0) {
			fprintf(stderr,
				"Cannot set fields to 'none' for all event types.\n");
			rc = -EINVAL;
			goto out;
		}

		if (output_set_by_user())
			pr_warning("Overriding previous field request for all events.\n");

		for (j = 0; j < PERF_TYPE_MAX; ++j) {
			output[j].fields = 0;
			output[j].user_set = true;
1360
			output[j].wildcard_set = true;
1361
		}
1362 1363
	}

1364
	for (tok = strtok(tok, ","); tok; tok = strtok(NULL, ",")) {
1365
		for (i = 0; i < imax; ++i) {
1366
			if (strcmp(tok, all_output_options[i].str) == 0)
1367 1368
				break;
		}
1369 1370 1371 1372
		if (i == imax && strcmp(tok, "flags") == 0) {
			print_flags = true;
			continue;
		}
1373
		if (i == imax) {
1374
			fprintf(stderr, "Invalid field requested.\n");
1375
			rc = -EINVAL;
1376
			goto out;
1377 1378
		}

1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399
		if (type == -1) {
			/* add user option to all events types for
			 * which it is valid
			 */
			for (j = 0; j < PERF_TYPE_MAX; ++j) {
				if (output[j].invalid_fields & all_output_options[i].field) {
					pr_warning("\'%s\' not valid for %s events. Ignoring.\n",
						   all_output_options[i].str, event_type(j));
				} else
					output[j].fields |= all_output_options[i].field;
			}
		} else {
			if (output[type].invalid_fields & all_output_options[i].field) {
				fprintf(stderr, "\'%s\' not valid for %s events.\n",
					 all_output_options[i].str, event_type(type));

				rc = -EINVAL;
				goto out;
			}
			output[type].fields |= all_output_options[i].field;
		}
1400 1401
	}

1402 1403 1404 1405 1406 1407
	if (type >= 0) {
		if (output[type].fields == 0) {
			pr_debug("No fields requested for %s type. "
				 "Events will not be displayed.\n", event_type(type));
		}
	}
1408

1409
out:
1410 1411 1412 1413
	free(str);
	return rc;
}

1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427
/* Helper function for filesystems that return a dent->d_type DT_UNKNOWN */
static int is_directory(const char *base_path, const struct dirent *dent)
{
	char path[PATH_MAX];
	struct stat st;

	sprintf(path, "%s/%s", base_path, dent->d_name);
	if (stat(path, &st))
		return 0;

	return S_ISDIR(st.st_mode);
}

#define for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next)\
1428 1429
	while (!readdir_r(scripts_dir, &lang_dirent, &lang_next) &&	\
	       lang_next)						\
1430 1431 1432
		if ((lang_dirent.d_type == DT_DIR ||			\
		     (lang_dirent.d_type == DT_UNKNOWN &&		\
		      is_directory(scripts_path, &lang_dirent))) &&	\
1433 1434 1435
		    (strcmp(lang_dirent.d_name, ".")) &&		\
		    (strcmp(lang_dirent.d_name, "..")))

1436
#define for_each_script(lang_path, lang_dir, script_dirent, script_next)\
1437 1438
	while (!readdir_r(lang_dir, &script_dirent, &script_next) &&	\
	       script_next)						\
1439 1440 1441
		if (script_dirent.d_type != DT_DIR &&			\
		    (script_dirent.d_type != DT_UNKNOWN ||		\
		     !is_directory(lang_path, &script_dirent)))
1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453


#define RECORD_SUFFIX			"-record"
#define REPORT_SUFFIX			"-report"

struct script_desc {
	struct list_head	node;
	char			*name;
	char			*half_liner;
	char			*args;
};

1454
static LIST_HEAD(script_descs);
1455 1456 1457 1458 1459

static struct script_desc *script_desc__new(const char *name)
{
	struct script_desc *s = zalloc(sizeof(*s));

1460
	if (s != NULL && name)
1461 1462 1463 1464 1465 1466 1467
		s->name = strdup(name);

	return s;
}

static void script_desc__delete(struct script_desc *s)
{
1468 1469 1470
	zfree(&s->name);
	zfree(&s->half_liner);
	zfree(&s->args);
1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509
	free(s);
}

static void script_desc__add(struct script_desc *s)
{
	list_add_tail(&s->node, &script_descs);
}

static struct script_desc *script_desc__find(const char *name)
{
	struct script_desc *s;

	list_for_each_entry(s, &script_descs, node)
		if (strcasecmp(s->name, name) == 0)
			return s;
	return NULL;
}

static struct script_desc *script_desc__findnew(const char *name)
{
	struct script_desc *s = script_desc__find(name);

	if (s)
		return s;

	s = script_desc__new(name);
	if (!s)
		goto out_delete_desc;

	script_desc__add(s);

	return s;

out_delete_desc:
	script_desc__delete(s);

	return NULL;
}

1510
static const char *ends_with(const char *str, const char *suffix)
1511 1512
{
	size_t suffix_len = strlen(suffix);
1513
	const char *p = str;
1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564

	if (strlen(str) > suffix_len) {
		p = str + strlen(str) - suffix_len;
		if (!strncmp(p, suffix, suffix_len))
			return p;
	}

	return NULL;
}

static int read_script_info(struct script_desc *desc, const char *filename)
{
	char line[BUFSIZ], *p;
	FILE *fp;

	fp = fopen(filename, "r");
	if (!fp)
		return -1;

	while (fgets(line, sizeof(line), fp)) {
		p = ltrim(line);
		if (strlen(p) == 0)
			continue;
		if (*p != '#')
			continue;
		p++;
		if (strlen(p) && *p == '!')
			continue;

		p = ltrim(p);
		if (strlen(p) && p[strlen(p) - 1] == '\n')
			p[strlen(p) - 1] = '\0';

		if (!strncmp(p, "description:", strlen("description:"))) {
			p += strlen("description:");
			desc->half_liner = strdup(ltrim(p));
			continue;
		}

		if (!strncmp(p, "args:", strlen("args:"))) {
			p += strlen("args:");
			desc->args = strdup(ltrim(p));
			continue;
		}
	}

	fclose(fp);

	return 0;
}

1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582
static char *get_script_root(struct dirent *script_dirent, const char *suffix)
{
	char *script_root, *str;

	script_root = strdup(script_dirent->d_name);
	if (!script_root)
		return NULL;

	str = (char *)ends_with(script_root, suffix);
	if (!str) {
		free(script_root);
		return NULL;
	}

	*str = '\0';
	return script_root;
}

1583 1584 1585
static int list_available_scripts(const struct option *opt __maybe_unused,
				  const char *s __maybe_unused,
				  int unset __maybe_unused)
1586 1587 1588 1589 1590 1591 1592 1593 1594 1595
{
	struct dirent *script_next, *lang_next, script_dirent, lang_dirent;
	char scripts_path[MAXPATHLEN];
	DIR *scripts_dir, *lang_dir;
	char script_path[MAXPATHLEN];
	char lang_path[MAXPATHLEN];
	struct script_desc *desc;
	char first_half[BUFSIZ];
	char *script_root;

1596
	snprintf(scripts_path, MAXPATHLEN, "%s/scripts", get_argv_exec_path());
1597 1598 1599 1600 1601

	scripts_dir = opendir(scripts_path);
	if (!scripts_dir)
		return -1;

1602
	for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) {
1603 1604 1605 1606 1607 1608
		snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path,
			 lang_dirent.d_name);
		lang_dir = opendir(lang_path);
		if (!lang_dir)
			continue;

1609
		for_each_script(lang_path, lang_dir, script_dirent, script_next) {
1610 1611
			script_root = get_script_root(&script_dirent, REPORT_SUFFIX);
			if (script_root) {
1612 1613 1614 1615
				desc = script_desc__findnew(script_root);
				snprintf(script_path, MAXPATHLEN, "%s/%s",
					 lang_path, script_dirent.d_name);
				read_script_info(desc, script_path);
1616
				free(script_root);
1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631
			}
		}
	}

	fprintf(stdout, "List of available trace scripts:\n");
	list_for_each_entry(desc, &script_descs, node) {
		sprintf(first_half, "%s %s", desc->name,
			desc->args ? desc->args : "");
		fprintf(stdout, "  %-36s %s\n", first_half,
			desc->half_liner ? desc->half_liner : "");
	}

	exit(0);
}

1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674
/*
 * Some scripts specify the required events in their "xxx-record" file,
 * this function will check if the events in perf.data match those
 * mentioned in the "xxx-record".
 *
 * Fixme: All existing "xxx-record" are all in good formats "-e event ",
 * which is covered well now. And new parsing code should be added to
 * cover the future complexing formats like event groups etc.
 */
static int check_ev_match(char *dir_name, char *scriptname,
			struct perf_session *session)
{
	char filename[MAXPATHLEN], evname[128];
	char line[BUFSIZ], *p;
	struct perf_evsel *pos;
	int match, len;
	FILE *fp;

	sprintf(filename, "%s/bin/%s-record", dir_name, scriptname);

	fp = fopen(filename, "r");
	if (!fp)
		return -1;

	while (fgets(line, sizeof(line), fp)) {
		p = ltrim(line);
		if (*p == '#')
			continue;

		while (strlen(p)) {
			p = strstr(p, "-e");
			if (!p)
				break;

			p += 2;
			p = ltrim(p);
			len = strcspn(p, " \t");
			if (!len)
				break;

			snprintf(evname, len + 1, "%s", p);

			match = 0;
1675
			evlist__for_each(session->evlist, pos) {
1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692
				if (!strcmp(perf_evsel__name(pos), evname)) {
					match = 1;
					break;
				}
			}

			if (!match) {
				fclose(fp);
				return -1;
			}
		}
	}

	fclose(fp);
	return 0;
}

1693 1694 1695 1696 1697 1698 1699 1700 1701 1702
/*
 * Return -1 if none is found, otherwise the actual scripts number.
 *
 * Currently the only user of this function is the script browser, which
 * will list all statically runnable scripts, select one, execute it and
 * show the output in a perf browser.
 */
int find_scripts(char **scripts_array, char **scripts_path_array)
{
	struct dirent *script_next, *lang_next, script_dirent, lang_dirent;
1703
	char scripts_path[MAXPATHLEN], lang_path[MAXPATHLEN];
1704
	DIR *scripts_dir, *lang_dir;
1705
	struct perf_session *session;
1706 1707 1708 1709
	struct perf_data_file file = {
		.path = input_name,
		.mode = PERF_DATA_MODE_READ,
	};
1710 1711 1712
	char *temp;
	int i = 0;

1713
	session = perf_session__new(&file, false, NULL);
1714 1715 1716
	if (!session)
		return -1;

1717
	snprintf(scripts_path, MAXPATHLEN, "%s/scripts", get_argv_exec_path());
1718 1719

	scripts_dir = opendir(scripts_path);
1720 1721
	if (!scripts_dir) {
		perf_session__delete(session);
1722
		return -1;
1723
	}
1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750

	for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) {
		snprintf(lang_path, MAXPATHLEN, "%s/%s", scripts_path,
			 lang_dirent.d_name);
#ifdef NO_LIBPERL
		if (strstr(lang_path, "perl"))
			continue;
#endif
#ifdef NO_LIBPYTHON
		if (strstr(lang_path, "python"))
			continue;
#endif

		lang_dir = opendir(lang_path);
		if (!lang_dir)
			continue;

		for_each_script(lang_path, lang_dir, script_dirent, script_next) {
			/* Skip those real time scripts: xxxtop.p[yl] */
			if (strstr(script_dirent.d_name, "top."))
				continue;
			sprintf(scripts_path_array[i], "%s/%s", lang_path,
				script_dirent.d_name);
			temp = strchr(script_dirent.d_name, '.');
			snprintf(scripts_array[i],
				(temp - script_dirent.d_name) + 1,
				"%s", script_dirent.d_name);
1751 1752 1753 1754 1755

			if (check_ev_match(lang_path,
					scripts_array[i], session))
				continue;

1756 1757
			i++;
		}
1758
		closedir(lang_dir);
1759 1760
	}

1761 1762
	closedir(scripts_dir);
	perf_session__delete(session);
1763 1764 1765
	return i;
}

1766 1767 1768 1769 1770 1771 1772
static char *get_script_path(const char *script_root, const char *suffix)
{
	struct dirent *script_next, *lang_next, script_dirent, lang_dirent;
	char scripts_path[MAXPATHLEN];
	char script_path[MAXPATHLEN];
	DIR *scripts_dir, *lang_dir;
	char lang_path[MAXPATHLEN];
1773
	char *__script_root;
1774

1775
	snprintf(scripts_path, MAXPATHLEN, "%s/scripts", get_argv_exec_path());
1776 1777 1778 1779 1780

	scripts_dir = opendir(scripts_path);
	if (!scripts_dir)
		return NULL;

1781
	for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) {
1782 1783 1784 1785 1786 1787
		snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path,
			 lang_dirent.d_name);
		lang_dir = opendir(lang_path);
		if (!lang_dir)
			continue;

1788
		for_each_script(lang_path, lang_dir, script_dirent, script_next) {
1789 1790 1791
			__script_root = get_script_root(&script_dirent, suffix);
			if (__script_root && !strcmp(script_root, __script_root)) {
				free(__script_root);
1792 1793
				closedir(lang_dir);
				closedir(scripts_dir);
1794 1795
				snprintf(script_path, MAXPATHLEN, "%s/%s",
					 lang_path, script_dirent.d_name);
1796
				return strdup(script_path);
1797 1798 1799
			}
			free(__script_root);
		}
1800
		closedir(lang_dir);
1801
	}
1802
	closedir(scripts_dir);
1803

1804
	return NULL;
1805 1806
}

1807 1808
static bool is_top_script(const char *script_path)
{
1809
	return ends_with(script_path, "top") == NULL ? false : true;
1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834
}

static int has_required_arg(char *script_path)
{
	struct script_desc *desc;
	int n_args = 0;
	char *p;

	desc = script_desc__new(NULL);

	if (read_script_info(desc, script_path))
		goto out;

	if (!desc->args)
		goto out;

	for (p = desc->args; *p; p++)
		if (*p == '<')
			n_args++;
out:
	script_desc__delete(desc);

	return n_args;
}

1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847
static int have_cmd(int argc, const char **argv)
{
	char **__argv = malloc(sizeof(const char *) * argc);

	if (!__argv) {
		pr_err("malloc failed\n");
		return -1;
	}

	memcpy(__argv, argv, sizeof(const char *) * argc);
	argc = parse_options(argc, (const char **)__argv, record_options,
			     NULL, PARSE_OPT_STOP_AT_NON_OPTION);
	free(__argv);
F
Frederic Weisbecker 已提交
1848

1849 1850 1851 1852 1853
	system_wide = (argc == 0);

	return 0;
}

1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869
static void script__setup_sample_type(struct perf_script *script)
{
	struct perf_session *session = script->session;
	u64 sample_type = perf_evlist__combined_sample_type(session->evlist);

	if (symbol_conf.use_callchain || symbol_conf.cumulate_callchain) {
		if ((sample_type & PERF_SAMPLE_REGS_USER) &&
		    (sample_type & PERF_SAMPLE_STACK_USER))
			callchain_param.record_mode = CALLCHAIN_DWARF;
		else if (sample_type & PERF_SAMPLE_BRANCH_STACK)
			callchain_param.record_mode = CALLCHAIN_LBR;
		else
			callchain_param.record_mode = CALLCHAIN_FP;
	}
}

1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885
static int process_stat_round_event(struct perf_tool *tool __maybe_unused,
				    union perf_event *event,
				    struct perf_session *session)
{
	struct stat_round_event *round = &event->stat_round;
	struct perf_evsel *counter;

	evlist__for_each(session->evlist, counter) {
		perf_stat_process_counter(&stat_config, counter);
		process_stat(counter, round->time);
	}

	process_stat_interval(round->time);
	return 0;
}

1886 1887 1888 1889 1890 1891 1892 1893
static int process_stat_config_event(struct perf_tool *tool __maybe_unused,
				     union perf_event *event,
				     struct perf_session *session __maybe_unused)
{
	perf_event__read_stat_config(&stat_config, &event->stat_config);
	return 0;
}

1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950
static int set_maps(struct perf_script *script)
{
	struct perf_evlist *evlist = script->session->evlist;

	if (!script->cpus || !script->threads)
		return 0;

	if (WARN_ONCE(script->allocated, "stats double allocation\n"))
		return -EINVAL;

	perf_evlist__set_maps(evlist, script->cpus, script->threads);

	if (perf_evlist__alloc_stats(evlist, true))
		return -ENOMEM;

	script->allocated = true;
	return 0;
}

static
int process_thread_map_event(struct perf_tool *tool,
			     union perf_event *event,
			     struct perf_session *session __maybe_unused)
{
	struct perf_script *script = container_of(tool, struct perf_script, tool);

	if (script->threads) {
		pr_warning("Extra thread map event, ignoring.\n");
		return 0;
	}

	script->threads = thread_map__new_event(&event->thread_map);
	if (!script->threads)
		return -ENOMEM;

	return set_maps(script);
}

static
int process_cpu_map_event(struct perf_tool *tool __maybe_unused,
			  union perf_event *event,
			  struct perf_session *session __maybe_unused)
{
	struct perf_script *script = container_of(tool, struct perf_script, tool);

	if (script->cpus) {
		pr_warning("Extra cpu map event, ignoring.\n");
		return 0;
	}

	script->cpus = cpu_map__new_data(&event->cpu_map.data);
	if (!script->cpus)
		return -ENOMEM;

	return set_maps(script);
}

1951 1952 1953
int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused)
{
	bool show_full_info = false;
1954 1955
	bool header = false;
	bool header_only = false;
1956
	bool script_started = false;
1957 1958 1959
	char *rec_script_path = NULL;
	char *rep_script_path = NULL;
	struct perf_session *session;
1960
	struct itrace_synth_opts itrace_synth_opts = { .set = false, };
1961 1962
	char *script_path = NULL;
	const char **__argv;
1963
	int i, j, err = 0;
1964 1965 1966 1967 1968 1969 1970 1971
	struct perf_script script = {
		.tool = {
			.sample		 = process_sample_event,
			.mmap		 = perf_event__process_mmap,
			.mmap2		 = perf_event__process_mmap2,
			.comm		 = perf_event__process_comm,
			.exit		 = perf_event__process_exit,
			.fork		 = perf_event__process_fork,
1972
			.attr		 = process_attr,
1973 1974
			.tracing_data	 = perf_event__process_tracing_data,
			.build_id	 = perf_event__process_build_id,
1975 1976 1977 1978
			.id_index	 = perf_event__process_id_index,
			.auxtrace_info	 = perf_event__process_auxtrace_info,
			.auxtrace	 = perf_event__process_auxtrace,
			.auxtrace_error	 = perf_event__process_auxtrace_error,
1979 1980
			.stat		 = perf_event__process_stat_event,
			.stat_round	 = process_stat_round_event,
1981
			.stat_config	 = process_stat_config_event,
1982 1983
			.thread_map	 = process_thread_map_event,
			.cpu_map	 = process_cpu_map_event,
1984
			.ordered_events	 = true,
1985 1986 1987
			.ordering_requires_timestamps = true,
		},
	};
1988 1989 1990
	struct perf_data_file file = {
		.mode = PERF_DATA_MODE_READ,
	};
1991
	const struct option options[] = {
F
Frederic Weisbecker 已提交
1992 1993
	OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
		    "dump raw trace in ASCII"),
1994
	OPT_INCR('v', "verbose", &verbose,
1995
		 "be more verbose (show symbol address, etc)"),
1996
	OPT_BOOLEAN('L', "Latency", &latency_format,
1997
		    "show latency attributes (irqs/preemption disabled, etc)"),
1998 1999
	OPT_CALLBACK_NOOPT('l', "list", NULL, NULL, "list available scripts",
			   list_available_scripts),
T
Tom Zanussi 已提交
2000 2001 2002 2003
	OPT_CALLBACK('s', "script", NULL, "name",
		     "script file name (lang:script name, script name, or *)",
		     parse_scriptname),
	OPT_STRING('g', "gen-script", &generate_script_lang, "lang",
2004
		   "generate perf-script.xx script in specified language"),
2005
	OPT_STRING('i', "input", &input_name, "file", "input file name"),
2006 2007
	OPT_BOOLEAN('d', "debug-mode", &debug_mode,
		   "do various checks like samples ordering and lost events"),
2008 2009
	OPT_BOOLEAN(0, "header", &header, "Show data header."),
	OPT_BOOLEAN(0, "header-only", &header_only, "Show only data header."),
2010 2011 2012 2013 2014 2015 2016 2017
	OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
		   "file", "vmlinux pathname"),
	OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name,
		   "file", "kallsyms pathname"),
	OPT_BOOLEAN('G', "hide-call-graph", &no_callchain,
		    "When printing symbols do not display call chain"),
	OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory",
		    "Look for files with symbols relative to this directory"),
2018
	OPT_CALLBACK('F', "fields", NULL, "str",
2019 2020 2021
		     "comma separated output fields prepend with 'type:'. "
		     "Valid types: hw,sw,trace,raw. "
		     "Fields: comm,tid,pid,time,cpu,event,trace,ip,sym,dso,"
2022
		     "addr,symoff,period,iregs,brstack,brstacksym,flags", parse_output_fields),
2023
	OPT_BOOLEAN('a', "all-cpus", &system_wide,
2024
		    "system-wide collection from all CPUs"),
2025 2026
	OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
		   "only consider these symbols"),
2027
	OPT_STRING('C', "cpu", &cpu_list, "cpu", "list of cpus to profile"),
2028 2029
	OPT_STRING('c', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
		   "only display events for these comms"),
2030 2031 2032 2033
	OPT_STRING(0, "pid", &symbol_conf.pid_list_str, "pid[,pid...]",
		   "only consider symbols in these pids"),
	OPT_STRING(0, "tid", &symbol_conf.tid_list_str, "tid[,tid...]",
		   "only consider symbols in these tids"),
2034 2035
	OPT_BOOLEAN('I', "show-info", &show_full_info,
		    "display extended information from perf.data file"),
2036 2037
	OPT_BOOLEAN('\0', "show-kernel-path", &symbol_conf.show_kernel_path,
		    "Show the path of [kernel.kallsyms]"),
2038 2039
	OPT_BOOLEAN('\0', "show-task-events", &script.show_task_events,
		    "Show the fork/comm/exit events"),
2040 2041
	OPT_BOOLEAN('\0', "show-mmap-events", &script.show_mmap_events,
		    "Show the mmap events"),
2042 2043
	OPT_BOOLEAN('\0', "show-switch-events", &script.show_switch_events,
		    "Show context switch events (if recorded)"),
2044
	OPT_BOOLEAN('f', "force", &file.force, "don't complain, do it"),
2045 2046
	OPT_BOOLEAN(0, "ns", &nanosecs,
		    "Use 9 decimal places when displaying time"),
2047 2048 2049
	OPT_CALLBACK_OPTARG(0, "itrace", &itrace_synth_opts, NULL, "opts",
			    "Instruction Tracing options",
			    itrace_parse_synth_opts),
2050 2051
	OPT_BOOLEAN(0, "full-source-path", &srcline_full_filename,
			"Show full source file name path for source lines"),
2052 2053 2054 2055 2056
	OPT_BOOLEAN(0, "demangle", &symbol_conf.demangle,
			"Enable symbol demangling"),
	OPT_BOOLEAN(0, "demangle-kernel", &symbol_conf.demangle_kernel,
			"Enable kernel symbol demangling"),

2057
	OPT_END()
2058
	};
2059 2060
	const char * const script_subcommands[] = { "record", "report", NULL };
	const char *script_usage[] = {
2061 2062 2063 2064 2065 2066 2067
		"perf script [<options>]",
		"perf script [<options>] record <script> [<record-options>] <command>",
		"perf script [<options>] report <script> [script-args]",
		"perf script [<options>] <script> [<record-options>] <command>",
		"perf script [<options>] <top-script> [script-args]",
		NULL
	};
2068

2069 2070
	setup_scripting();

2071
	argc = parse_options_subcommand(argc, argv, options, script_subcommands, script_usage,
2072 2073
			     PARSE_OPT_STOP_AT_NON_OPTION);

2074 2075
	file.path = input_name;

2076 2077 2078 2079
	if (argc > 1 && !strncmp(argv[0], "rec", strlen("rec"))) {
		rec_script_path = get_script_path(argv[1], RECORD_SUFFIX);
		if (!rec_script_path)
			return cmd_record(argc, argv, NULL);
2080 2081
	}

2082 2083 2084
	if (argc > 1 && !strncmp(argv[0], "rep", strlen("rep"))) {
		rep_script_path = get_script_path(argv[1], REPORT_SUFFIX);
		if (!rep_script_path) {
2085
			fprintf(stderr,
2086
				"Please specify a valid report script"
2087
				"(see 'perf script -l' for listing)\n");
2088 2089 2090 2091
			return -1;
		}
	}

2092 2093 2094 2095
	if (itrace_synth_opts.callchain &&
	    itrace_synth_opts.callchain_sz > scripting_max_stack)
		scripting_max_stack = itrace_synth_opts.callchain_sz;

2096
	/* make sure PERF_EXEC_PATH is set for scripts */
2097
	set_argv_exec_path(get_argv_exec_path());
2098

2099
	if (argc && !script_name && !rec_script_path && !rep_script_path) {
2100
		int live_pipe[2];
2101
		int rep_args;
2102 2103
		pid_t pid;

2104 2105 2106 2107
		rec_script_path = get_script_path(argv[0], RECORD_SUFFIX);
		rep_script_path = get_script_path(argv[0], REPORT_SUFFIX);

		if (!rec_script_path && !rep_script_path) {
2108 2109
			usage_with_options_msg(script_usage, options,
				"Couldn't find script `%s'\n\n See perf"
2110
				" script -l for available scripts.\n", argv[0]);
2111 2112
		}

2113 2114 2115 2116 2117 2118 2119 2120
		if (is_top_script(argv[0])) {
			rep_args = argc - 1;
		} else {
			int rec_args;

			rep_args = has_required_arg(rep_script_path);
			rec_args = (argc - 1) - rep_args;
			if (rec_args < 0) {
2121 2122
				usage_with_options_msg(script_usage, options,
					"`%s' script requires options."
2123
					"\n\n See perf script -l for available "
2124 2125
					"scripts and options.\n", argv[0]);
			}
2126 2127 2128 2129
		}

		if (pipe(live_pipe) < 0) {
			perror("failed to create pipe");
2130
			return -1;
2131 2132 2133 2134 2135
		}

		pid = fork();
		if (pid < 0) {
			perror("failed to fork");
2136
			return -1;
2137 2138 2139
		}

		if (!pid) {
2140 2141
			j = 0;

2142 2143 2144
			dup2(live_pipe[1], 1);
			close(live_pipe[0]);

2145 2146 2147
			if (is_top_script(argv[0])) {
				system_wide = true;
			} else if (!system_wide) {
2148 2149 2150 2151
				if (have_cmd(argc - rep_args, &argv[rep_args]) != 0) {
					err = -1;
					goto out;
				}
2152
			}
2153 2154

			__argv = malloc((argc + 6) * sizeof(const char *));
2155 2156 2157 2158 2159
			if (!__argv) {
				pr_err("malloc failed\n");
				err = -ENOMEM;
				goto out;
			}
2160

2161 2162 2163 2164 2165 2166 2167 2168 2169 2170
			__argv[j++] = "/bin/sh";
			__argv[j++] = rec_script_path;
			if (system_wide)
				__argv[j++] = "-a";
			__argv[j++] = "-q";
			__argv[j++] = "-o";
			__argv[j++] = "-";
			for (i = rep_args + 1; i < argc; i++)
				__argv[j++] = argv[i];
			__argv[j++] = NULL;
2171 2172

			execvp("/bin/sh", (char **)__argv);
2173
			free(__argv);
2174 2175 2176 2177 2178 2179
			exit(-1);
		}

		dup2(live_pipe[0], 0);
		close(live_pipe[1]);

2180
		__argv = malloc((argc + 4) * sizeof(const char *));
2181 2182 2183 2184 2185 2186
		if (!__argv) {
			pr_err("malloc failed\n");
			err = -ENOMEM;
			goto out;
		}

2187 2188 2189 2190 2191 2192 2193 2194
		j = 0;
		__argv[j++] = "/bin/sh";
		__argv[j++] = rep_script_path;
		for (i = 1; i < rep_args + 1; i++)
			__argv[j++] = argv[i];
		__argv[j++] = "-i";
		__argv[j++] = "-";
		__argv[j++] = NULL;
2195 2196

		execvp("/bin/sh", (char **)__argv);
2197
		free(__argv);
2198 2199 2200
		exit(-1);
	}

2201 2202 2203 2204
	if (rec_script_path)
		script_path = rec_script_path;
	if (rep_script_path)
		script_path = rep_script_path;
2205

2206 2207
	if (script_path) {
		j = 0;
2208

2209 2210
		if (!rec_script_path)
			system_wide = false;
2211 2212 2213 2214 2215 2216
		else if (!system_wide) {
			if (have_cmd(argc - 1, &argv[1]) != 0) {
				err = -1;
				goto out;
			}
		}
2217

2218
		__argv = malloc((argc + 2) * sizeof(const char *));
2219 2220 2221 2222 2223 2224
		if (!__argv) {
			pr_err("malloc failed\n");
			err = -ENOMEM;
			goto out;
		}

2225 2226 2227 2228
		__argv[j++] = "/bin/sh";
		__argv[j++] = script_path;
		if (system_wide)
			__argv[j++] = "-a";
2229
		for (i = 2; i < argc; i++)
2230 2231
			__argv[j++] = argv[i];
		__argv[j++] = NULL;
2232 2233

		execvp("/bin/sh", (char **)__argv);
2234
		free(__argv);
2235 2236
		exit(-1);
	}
T
Tom Zanussi 已提交
2237

2238 2239
	if (!script_name)
		setup_pager();
F
Frederic Weisbecker 已提交
2240

2241
	session = perf_session__new(&file, false, &script.tool);
2242
	if (session == NULL)
2243
		return -1;
2244

2245 2246 2247
	if (header || header_only) {
		perf_session__fprintf_info(session, stdout, show_full_info);
		if (header_only)
2248
			goto out_delete;
2249 2250
	}

2251
	if (symbol__init(&session->header.env) < 0)
2252 2253
		goto out_delete;

2254
	script.session = session;
2255
	script__setup_sample_type(&script);
2256

2257 2258
	session->itrace_synth_opts = &itrace_synth_opts;

2259
	if (cpu_list) {
2260 2261 2262
		err = perf_session__cpu_bitmap(session, cpu_list, cpu_bitmap);
		if (err < 0)
			goto out_delete;
2263 2264
	}

2265
	if (!no_callchain)
2266 2267 2268 2269
		symbol_conf.use_callchain = true;
	else
		symbol_conf.use_callchain = false;

2270 2271
	if (session->tevent.pevent &&
	    pevent_set_function_resolver(session->tevent.pevent,
2272 2273 2274 2275 2276 2277
					 machine__resolve_kernel_addr,
					 &session->machines.host) < 0) {
		pr_err("%s: failed to set libtraceevent function resolver\n", __func__);
		return -1;
	}

T
Tom Zanussi 已提交
2278 2279
	if (generate_script_lang) {
		struct stat perf_stat;
2280 2281
		int input;

2282
		if (output_set_by_user()) {
2283 2284
			fprintf(stderr,
				"custom fields not supported for generated scripts");
2285 2286
			err = -EINVAL;
			goto out_delete;
2287
		}
T
Tom Zanussi 已提交
2288

2289
		input = open(file.path, O_RDONLY);	/* input_name */
T
Tom Zanussi 已提交
2290
		if (input < 0) {
2291
			err = -errno;
T
Tom Zanussi 已提交
2292
			perror("failed to open file");
2293
			goto out_delete;
T
Tom Zanussi 已提交
2294 2295 2296 2297 2298
		}

		err = fstat(input, &perf_stat);
		if (err < 0) {
			perror("failed to stat file");
2299
			goto out_delete;
T
Tom Zanussi 已提交
2300 2301 2302 2303
		}

		if (!perf_stat.st_size) {
			fprintf(stderr, "zero-sized file, nothing to do!\n");
2304
			goto out_delete;
T
Tom Zanussi 已提交
2305 2306 2307 2308 2309
		}

		scripting_ops = script_spec__lookup(generate_script_lang);
		if (!scripting_ops) {
			fprintf(stderr, "invalid language specifier");
2310 2311
			err = -ENOENT;
			goto out_delete;
T
Tom Zanussi 已提交
2312 2313
		}

J
Jiri Olsa 已提交
2314
		err = scripting_ops->generate_script(session->tevent.pevent,
2315
						     "perf-script");
2316
		goto out_delete;
T
Tom Zanussi 已提交
2317 2318 2319
	}

	if (script_name) {
2320
		err = scripting_ops->start_script(script_name, argc, argv);
T
Tom Zanussi 已提交
2321
		if (err)
2322
			goto out_delete;
2323
		pr_debug("perf script started with script %s\n\n", script_name);
2324
		script_started = true;
T
Tom Zanussi 已提交
2325 2326
	}

2327 2328 2329

	err = perf_session__check_output_opt(session);
	if (err < 0)
2330
		goto out_delete;
2331

2332
	err = __cmd_script(&script);
T
Tom Zanussi 已提交
2333

2334 2335
	flush_scripting();

2336
out_delete:
2337
	perf_evlist__free_stats(session->evlist);
2338
	perf_session__delete(session);
2339 2340 2341

	if (script_started)
		cleanup_scripting();
T
Tom Zanussi 已提交
2342 2343
out:
	return err;
F
Frederic Weisbecker 已提交
2344
}