builtin-script.c 36.1 KB
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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"
#include "util/exec_cmd.h"
#include "util/header.h"
#include "util/parse-options.h"
#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 <linux/bitmap.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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extern const struct option	record_options[];
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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 const char		*cpu_list;
static DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
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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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};

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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};

/* 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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	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,
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		.invalid_fields = PERF_OUTPUT_TRACE,
	},

	[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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		.invalid_fields = PERF_OUTPUT_TRACE,
	},

	[PERF_TYPE_TRACEPOINT] = {
		.user_set = false,

		.fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
				  PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
				  PERF_OUTPUT_EVNAME | PERF_OUTPUT_TRACE,
	},
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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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		.invalid_fields = PERF_OUTPUT_TRACE,
	},
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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__check_stype(struct perf_evsel *evsel,
				   u64 sample_type, const char *sample_msg,
				   enum perf_output_field field)
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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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		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;
}

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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	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 (!no_callchain &&
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		    !(attr->sample_type & PERF_SAMPLE_CALLCHAIN))
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			symbol_conf.use_callchain = false;
	}
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	if (PRINT_FIELD(ADDR) &&
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		perf_evsel__check_stype(evsel, PERF_SAMPLE_ADDR, "ADDR",
					PERF_OUTPUT_ADDR))
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		return -EINVAL;

	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(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__check_stype(evsel, PERF_SAMPLE_CPU, "CPU",
					PERF_OUTPUT_CPU))
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		return -EINVAL;
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	return 0;
}

/*
 * 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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	}

	return 0;
}
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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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	const char *evname = NULL;
	unsigned long secs;
	unsigned long usecs;
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	unsigned long long nsecs;

	if (PRINT_FIELD(COMM)) {
		if (latency_format)
			printf("%8.8s ", thread->comm);
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		else if (PRINT_FIELD(IP) && symbol_conf.use_callchain)
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			printf("%s ", thread->comm);
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		else
			printf("%16s ", thread->comm);
	}
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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;
		printf("%5lu.%06lu: ", secs, usecs);
	}
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	if (PRINT_FIELD(EVNAME)) {
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		evname = perf_evsel__name(evsel);
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		printf("%s: ", evname ? evname : "[unknown]");
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	}
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}

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static bool is_bts_event(struct perf_event_attr *attr)
{
	return ((attr->type == PERF_TYPE_HARDWARE) &&
		(attr->config & PERF_COUNT_HW_BRANCH_INSTRUCTIONS) &&
		(attr->sample_period == 1));
}

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static bool sample_addr_correlates_sym(struct perf_event_attr *attr)
{
	if ((attr->type == PERF_TYPE_SOFTWARE) &&
	    ((attr->config == PERF_COUNT_SW_PAGE_FAULTS) ||
	     (attr->config == PERF_COUNT_SW_PAGE_FAULTS_MIN) ||
	     (attr->config == PERF_COUNT_SW_PAGE_FAULTS_MAJ)))
		return true;

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	if (is_bts_event(attr))
		return true;

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	return false;
}

static void print_sample_addr(union perf_event *event,
			  struct perf_sample *sample,
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			  struct machine *machine,
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			  struct thread *thread,
			  struct perf_event_attr *attr)
{
	struct addr_location al;
	u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;

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

	if (!sample_addr_correlates_sym(attr))
		return;

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	thread__find_addr_map(thread, machine, cpumode, MAP__FUNCTION,
			      sample->addr, &al);
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	if (!al.map)
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		thread__find_addr_map(thread, machine, cpumode, MAP__VARIABLE,
				      sample->addr, &al);
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	al.cpu = sample->cpu;
	al.sym = NULL;

	if (al.map)
		al.sym = map__find_symbol(al.map, al.addr, NULL);

	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,
			     struct machine *machine,
			     struct thread *thread)
{
	struct perf_event_attr *attr = &evsel->attr;

	/* print branch_from information */
	if (PRINT_FIELD(IP)) {
		if (!symbol_conf.use_callchain)
			printf(" ");
		else
			printf("\n");
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		perf_evsel__print_ip(evsel, event, sample, machine,
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				     PRINT_FIELD(SYM), PRINT_FIELD(DSO),
				     PRINT_FIELD(SYMOFFSET));
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	}

	printf(" => ");

	/* print branch_to information */
	if (PRINT_FIELD(ADDR))
		print_sample_addr(event, sample, machine, thread, attr);

	printf("\n");
}

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static void process_event(union perf_event *event, struct perf_sample *sample,
			  struct perf_evsel *evsel, struct machine *machine,
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			  struct addr_location *al)
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{
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	struct perf_event_attr *attr = &evsel->attr;
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	struct thread *thread = al->thread;
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	if (output[attr->type].fields == 0)
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		return;

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	print_sample_start(sample, thread, evsel);
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	if (is_bts_event(attr)) {
		print_sample_bts(event, sample, evsel, machine, thread);
		return;
	}

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	if (PRINT_FIELD(TRACE))
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		event_format__print(evsel->tp_format, sample->cpu,
				    sample->raw_data, sample->raw_size);
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	if (PRINT_FIELD(ADDR))
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		print_sample_addr(event, sample, machine, thread, attr);
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	if (PRINT_FIELD(IP)) {
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		if (!symbol_conf.use_callchain)
			printf(" ");
		else
			printf("\n");
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		perf_evsel__print_ip(evsel, event, sample, machine,
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				     PRINT_FIELD(SYM), PRINT_FIELD(DSO),
				     PRINT_FIELD(SYMOFFSET));
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	}

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	printf("\n");
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}

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static int default_start_script(const char *script __maybe_unused,
				int argc __maybe_unused,
				const char **argv __maybe_unused)
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{
	return 0;
}

static int default_stop_script(void)
{
	return 0;
}

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static int default_generate_script(struct pevent *pevent __maybe_unused,
				   const char *outfile __maybe_unused)
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{
	return 0;
}

static struct scripting_ops default_scripting_ops = {
	.start_script		= default_start_script,
	.stop_script		= default_stop_script,
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	.process_event		= process_event,
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	.generate_script	= default_generate_script,
};

static struct scripting_ops	*scripting_ops;

static void setup_scripting(void)
{
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	setup_perl_scripting();
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	setup_python_scripting();
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	scripting_ops = &default_scripting_ops;
}

static int cleanup_scripting(void)
{
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	pr_debug("\nperf script stopped\n");
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	return scripting_ops->stop_script();
}

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static int process_sample_event(struct perf_tool *tool __maybe_unused,
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				union perf_event *event,
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				struct perf_sample *sample,
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				struct perf_evsel *evsel,
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				struct machine *machine)
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{
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	struct addr_location al;
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	struct thread *thread = machine__findnew_thread(machine, event->ip.tid);
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	if (thread == NULL) {
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		pr_debug("problem processing %d event, skipping it.\n",
			 event->header.type);
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		return -1;
	}

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	if (debug_mode) {
		if (sample->time < last_timestamp) {
			pr_err("Samples misordered, previous: %" PRIu64
				" this: %" PRIu64 "\n", last_timestamp,
				sample->time);
			nr_unordered++;
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		}
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		last_timestamp = sample->time;
		return 0;
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	}
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	if (perf_event__preprocess_sample(event, machine, &al, sample, 0) < 0) {
		pr_err("problem processing %d event, skipping it.\n",
		       event->header.type);
		return -1;
	}

	if (al.filtered)
		return 0;

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	if (cpu_list && !test_bit(sample->cpu, cpu_bitmap))
		return 0;

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	scripting_ops->process_event(event, sample, evsel, machine, &al);
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	evsel->hists.stats.total_period += sample->period;
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	return 0;
}

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static struct perf_tool perf_script = {
	.sample		 = process_sample_event,
	.mmap		 = perf_event__process_mmap,
	.comm		 = perf_event__process_comm,
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	.exit		 = perf_event__process_exit,
	.fork		 = perf_event__process_fork,
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	.attr		 = perf_event__process_attr,
	.tracing_data	 = perf_event__process_tracing_data,
	.build_id	 = perf_event__process_build_id,
	.ordered_samples = true,
	.ordering_requires_timestamps = true,
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};

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extern volatile int session_done;

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static void sig_handler(int sig __maybe_unused)
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{
	session_done = 1;
}

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static int __cmd_script(struct perf_session *session)
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{
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	int ret;

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	signal(SIGINT, sig_handler);

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	ret = perf_session__process_events(session, &perf_script);
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	if (debug_mode)
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		pr_err("Misordered timestamps: %" PRIu64 "\n", nr_unordered);
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	return ret;
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}

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struct script_spec {
	struct list_head	node;
	struct scripting_ops	*ops;
	char			spec[0];
};

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static LIST_HEAD(script_specs);
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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;
}

static struct script_spec *script_spec__findnew(const char *spec,
						struct scripting_ops *ops)
{
	struct script_spec *s = script_spec__find(spec);

	if (s)
		return s;

	s = script_spec__new(spec, ops);
	if (!s)
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		return NULL;
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	script_spec__add(s);

	return s;
}

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

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

	s = script_spec__findnew(spec, ops);
	if (!s)
		return -1;

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

	fprintf(stderr, "\n");
}

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static int parse_scriptname(const struct option *opt __maybe_unused,
			    const char *str, int unset __maybe_unused)
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{
	char spec[PATH_MAX];
	const char *script, *ext;
	int len;

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	if (strcmp(str, "lang") == 0) {
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		list_available_languages();
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		exit(0);
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	}

	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;
674
		ext = strrchr(script, '.');
T
Tom Zanussi 已提交
675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690
		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;
}

691 692
static int parse_output_fields(const struct option *opt __maybe_unused,
			    const char *arg, int unset __maybe_unused)
693 694
{
	char *tok;
695
	int i, imax = ARRAY_SIZE(all_output_options);
696
	int j;
697 698
	int rc = 0;
	char *str = strdup(arg);
699
	int type = -1;
700 701 702 703

	if (!str)
		return -ENOMEM;

704 705 706
	/* 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.
707
	 */
708 709 710 711 712 713 714 715 716 717
	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;
718 719
		else if (!strcmp(str, "raw"))
			type = PERF_TYPE_RAW;
720 721
		else {
			fprintf(stderr, "Invalid event type in field string.\n");
722 723
			rc = -EINVAL;
			goto out;
724 725 726 727 728 729 730 731
		}

		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;
732
		output[type].wildcard_set = false;
733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748

	} 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;
749
			output[j].wildcard_set = true;
750
		}
751 752
	}

753 754
	tok = strtok(tok, ",");
	while (tok) {
755
		for (i = 0; i < imax; ++i) {
756
			if (strcmp(tok, all_output_options[i].str) == 0)
757 758 759
				break;
		}
		if (i == imax) {
760
			fprintf(stderr, "Invalid field requested.\n");
761
			rc = -EINVAL;
762
			goto out;
763 764
		}

765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787
		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;
		}

		tok = strtok(NULL, ",");
788 789
	}

790 791 792 793 794 795
	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));
		}
	}
796

797
out:
798 799 800 801
	free(str);
	return rc;
}

802 803 804 805 806 807 808 809 810 811 812 813 814 815
/* 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)\
816 817
	while (!readdir_r(scripts_dir, &lang_dirent, &lang_next) &&	\
	       lang_next)						\
818 819 820
		if ((lang_dirent.d_type == DT_DIR ||			\
		     (lang_dirent.d_type == DT_UNKNOWN &&		\
		      is_directory(scripts_path, &lang_dirent))) &&	\
821 822 823
		    (strcmp(lang_dirent.d_name, ".")) &&		\
		    (strcmp(lang_dirent.d_name, "..")))

824
#define for_each_script(lang_path, lang_dir, script_dirent, script_next)\
825 826
	while (!readdir_r(lang_dir, &script_dirent, &script_next) &&	\
	       script_next)						\
827 828 829
		if (script_dirent.d_type != DT_DIR &&			\
		    (script_dirent.d_type != DT_UNKNOWN ||		\
		     !is_directory(lang_path, &script_dirent)))
830 831 832 833 834 835 836 837 838 839 840 841


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

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

842
static LIST_HEAD(script_descs);
843 844 845 846 847

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

848
	if (s != NULL && name)
849 850 851 852 853 854 855 856
		s->name = strdup(name);

	return s;
}

static void script_desc__delete(struct script_desc *s)
{
	free(s->name);
857 858
	free(s->half_liner);
	free(s->args);
859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897
	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;
}

898
static const char *ends_with(const char *str, const char *suffix)
899 900
{
	size_t suffix_len = strlen(suffix);
901
	const char *p = str;
902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952

	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;
}

953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970
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;
}

971 972 973
static int list_available_scripts(const struct option *opt __maybe_unused,
				  const char *s __maybe_unused,
				  int unset __maybe_unused)
974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989
{
	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;

	snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path());

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

990
	for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) {
991 992 993 994 995 996
		snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path,
			 lang_dirent.d_name);
		lang_dir = opendir(lang_path);
		if (!lang_dir)
			continue;

997
		for_each_script(lang_path, lang_dir, script_dirent, script_next) {
998 999
			script_root = get_script_root(&script_dirent, REPORT_SUFFIX);
			if (script_root) {
1000 1001 1002 1003
				desc = script_desc__findnew(script_root);
				snprintf(script_path, MAXPATHLEN, "%s/%s",
					 lang_path, script_dirent.d_name);
				read_script_info(desc, script_path);
1004
				free(script_root);
1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019
			}
		}
	}

	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);
}

1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081
/*
 * 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;
			list_for_each_entry(pos,
					&session->evlist->entries, node) {
				if (!strcmp(perf_evsel__name(pos), evname)) {
					match = 1;
					break;
				}
			}

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

	fclose(fp);
	return 0;
}

1082 1083 1084 1085 1086 1087 1088 1089 1090 1091
/*
 * 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;
1092
	char scripts_path[MAXPATHLEN], lang_path[MAXPATHLEN];
1093
	DIR *scripts_dir, *lang_dir;
1094
	struct perf_session *session;
1095 1096 1097
	char *temp;
	int i = 0;

1098 1099 1100 1101
	session = perf_session__new(input_name, O_RDONLY, 0, false, NULL);
	if (!session)
		return -1;

1102 1103 1104
	snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path());

	scripts_dir = opendir(scripts_path);
1105 1106
	if (!scripts_dir) {
		perf_session__delete(session);
1107
		return -1;
1108
	}
1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135

	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);
1136 1137 1138 1139 1140

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

1141 1142
			i++;
		}
1143
		closedir(lang_dir);
1144 1145
	}

1146 1147
	closedir(scripts_dir);
	perf_session__delete(session);
1148 1149 1150
	return i;
}

1151 1152 1153 1154 1155 1156 1157
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];
1158
	char *__script_root;
1159 1160 1161 1162 1163 1164 1165

	snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path());

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

1166
	for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) {
1167 1168 1169 1170 1171 1172
		snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path,
			 lang_dirent.d_name);
		lang_dir = opendir(lang_path);
		if (!lang_dir)
			continue;

1173
		for_each_script(lang_path, lang_dir, script_dirent, script_next) {
1174 1175 1176
			__script_root = get_script_root(&script_dirent, suffix);
			if (__script_root && !strcmp(script_root, __script_root)) {
				free(__script_root);
1177 1178
				closedir(lang_dir);
				closedir(scripts_dir);
1179 1180
				snprintf(script_path, MAXPATHLEN, "%s/%s",
					 lang_path, script_dirent.d_name);
1181
				return strdup(script_path);
1182 1183 1184
			}
			free(__script_root);
		}
1185
		closedir(lang_dir);
1186
	}
1187
	closedir(scripts_dir);
1188

1189
	return NULL;
1190 1191
}

1192 1193
static bool is_top_script(const char *script_path)
{
1194
	return ends_with(script_path, "top") == NULL ? false : true;
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
}

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;
}

1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232
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
1233

1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248
	system_wide = (argc == 0);

	return 0;
}

int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused)
{
	bool show_full_info = false;
	char *rec_script_path = NULL;
	char *rep_script_path = NULL;
	struct perf_session *session;
	char *script_path = NULL;
	const char **__argv;
	int i, j, err;
	const struct option options[] = {
F
Frederic Weisbecker 已提交
1249 1250
	OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
		    "dump raw trace in ASCII"),
1251
	OPT_INCR('v', "verbose", &verbose,
1252
		 "be more verbose (show symbol address, etc)"),
1253
	OPT_BOOLEAN('L', "Latency", &latency_format,
1254
		    "show latency attributes (irqs/preemption disabled, etc)"),
1255 1256
	OPT_CALLBACK_NOOPT('l', "list", NULL, NULL, "list available scripts",
			   list_available_scripts),
T
Tom Zanussi 已提交
1257 1258 1259 1260
	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",
1261
		   "generate perf-script.xx script in specified language"),
1262
	OPT_STRING('i', "input", &input_name, "file", "input file name"),
1263 1264
	OPT_BOOLEAN('d', "debug-mode", &debug_mode,
		   "do various checks like samples ordering and lost events"),
1265 1266 1267 1268 1269 1270 1271 1272
	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"),
1273
	OPT_CALLBACK('f', "fields", NULL, "str",
1274 1275 1276
		     "comma separated output fields prepend with 'type:'. "
		     "Valid types: hw,sw,trace,raw. "
		     "Fields: comm,tid,pid,time,cpu,event,trace,ip,sym,dso,"
1277
		     "addr,symoff", parse_output_fields),
1278
	OPT_BOOLEAN('a', "all-cpus", &system_wide,
1279
		    "system-wide collection from all CPUs"),
1280 1281
	OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
		   "only consider these symbols"),
1282
	OPT_STRING('C', "cpu", &cpu_list, "cpu", "list of cpus to profile"),
1283 1284
	OPT_STRING('c', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
		   "only display events for these comms"),
1285 1286
	OPT_BOOLEAN('I', "show-info", &show_full_info,
		    "display extended information from perf.data file"),
1287 1288
	OPT_BOOLEAN('\0', "show-kernel-path", &symbol_conf.show_kernel_path,
		    "Show the path of [kernel.kallsyms]"),
1289
	OPT_END()
1290 1291 1292 1293 1294 1295 1296 1297 1298
	};
	const char * const script_usage[] = {
		"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
	};
1299

1300 1301
	setup_scripting();

1302
	argc = parse_options(argc, argv, options, script_usage,
1303 1304 1305 1306 1307 1308
			     PARSE_OPT_STOP_AT_NON_OPTION);

	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);
1309 1310
	}

1311 1312 1313
	if (argc > 1 && !strncmp(argv[0], "rep", strlen("rep"))) {
		rep_script_path = get_script_path(argv[1], REPORT_SUFFIX);
		if (!rep_script_path) {
1314
			fprintf(stderr,
1315
				"Please specify a valid report script"
1316
				"(see 'perf script -l' for listing)\n");
1317 1318 1319 1320
			return -1;
		}
	}

1321 1322 1323
	/* make sure PERF_EXEC_PATH is set for scripts */
	perf_set_argv_exec_path(perf_exec_path());

1324
	if (argc && !script_name && !rec_script_path && !rep_script_path) {
1325
		int live_pipe[2];
1326
		int rep_args;
1327 1328
		pid_t pid;

1329 1330 1331 1332 1333
		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) {
			fprintf(stderr, " Couldn't find script %s\n\n See perf"
1334 1335
				" script -l for available scripts.\n", argv[0]);
			usage_with_options(script_usage, options);
1336 1337
		}

1338 1339 1340 1341 1342 1343 1344 1345 1346
		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) {
				fprintf(stderr, " %s script requires options."
1347
					"\n\n See perf script -l for available "
1348
					"scripts and options.\n", argv[0]);
1349
				usage_with_options(script_usage, options);
1350
			}
1351 1352 1353 1354
		}

		if (pipe(live_pipe) < 0) {
			perror("failed to create pipe");
1355
			return -1;
1356 1357 1358 1359 1360
		}

		pid = fork();
		if (pid < 0) {
			perror("failed to fork");
1361
			return -1;
1362 1363 1364
		}

		if (!pid) {
1365 1366
			j = 0;

1367 1368 1369
			dup2(live_pipe[1], 1);
			close(live_pipe[0]);

1370 1371 1372
			if (is_top_script(argv[0])) {
				system_wide = true;
			} else if (!system_wide) {
1373 1374 1375 1376
				if (have_cmd(argc - rep_args, &argv[rep_args]) != 0) {
					err = -1;
					goto out;
				}
1377
			}
1378 1379

			__argv = malloc((argc + 6) * sizeof(const char *));
1380 1381 1382 1383 1384
			if (!__argv) {
				pr_err("malloc failed\n");
				err = -ENOMEM;
				goto out;
			}
1385

1386 1387 1388 1389 1390 1391 1392 1393 1394 1395
			__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;
1396 1397

			execvp("/bin/sh", (char **)__argv);
1398
			free(__argv);
1399 1400 1401 1402 1403 1404
			exit(-1);
		}

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

1405
		__argv = malloc((argc + 4) * sizeof(const char *));
1406 1407 1408 1409 1410 1411
		if (!__argv) {
			pr_err("malloc failed\n");
			err = -ENOMEM;
			goto out;
		}

1412 1413 1414 1415 1416 1417 1418 1419
		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;
1420 1421

		execvp("/bin/sh", (char **)__argv);
1422
		free(__argv);
1423 1424 1425
		exit(-1);
	}

1426 1427 1428 1429
	if (rec_script_path)
		script_path = rec_script_path;
	if (rep_script_path)
		script_path = rep_script_path;
1430

1431 1432
	if (script_path) {
		j = 0;
1433

1434 1435
		if (!rec_script_path)
			system_wide = false;
1436 1437 1438 1439 1440 1441
		else if (!system_wide) {
			if (have_cmd(argc - 1, &argv[1]) != 0) {
				err = -1;
				goto out;
			}
		}
1442

1443
		__argv = malloc((argc + 2) * sizeof(const char *));
1444 1445 1446 1447 1448 1449
		if (!__argv) {
			pr_err("malloc failed\n");
			err = -ENOMEM;
			goto out;
		}

1450 1451 1452 1453
		__argv[j++] = "/bin/sh";
		__argv[j++] = script_path;
		if (system_wide)
			__argv[j++] = "-a";
1454
		for (i = 2; i < argc; i++)
1455 1456
			__argv[j++] = argv[i];
		__argv[j++] = NULL;
1457 1458

		execvp("/bin/sh", (char **)__argv);
1459
		free(__argv);
1460 1461
		exit(-1);
	}
T
Tom Zanussi 已提交
1462

1463 1464
	if (symbol__init() < 0)
		return -1;
1465 1466
	if (!script_name)
		setup_pager();
F
Frederic Weisbecker 已提交
1467

1468
	session = perf_session__new(input_name, O_RDONLY, 0, false,
1469
				    &perf_script);
1470 1471 1472
	if (session == NULL)
		return -ENOMEM;

1473 1474 1475 1476 1477
	if (cpu_list) {
		if (perf_session__cpu_bitmap(session, cpu_list, cpu_bitmap))
			return -1;
	}

1478 1479
	if (!script_name && !generate_script_lang)
		perf_session__fprintf_info(session, stdout, show_full_info);
1480

1481
	if (!no_callchain)
1482 1483 1484 1485
		symbol_conf.use_callchain = true;
	else
		symbol_conf.use_callchain = false;

T
Tom Zanussi 已提交
1486 1487
	if (generate_script_lang) {
		struct stat perf_stat;
1488 1489
		int input;

1490
		if (output_set_by_user()) {
1491 1492 1493 1494
			fprintf(stderr,
				"custom fields not supported for generated scripts");
			return -1;
		}
T
Tom Zanussi 已提交
1495

1496
		input = open(session->filename, O_RDONLY);	/* input_name */
T
Tom Zanussi 已提交
1497 1498
		if (input < 0) {
			perror("failed to open file");
1499
			return -1;
T
Tom Zanussi 已提交
1500 1501 1502 1503 1504
		}

		err = fstat(input, &perf_stat);
		if (err < 0) {
			perror("failed to stat file");
1505
			return -1;
T
Tom Zanussi 已提交
1506 1507 1508 1509
		}

		if (!perf_stat.st_size) {
			fprintf(stderr, "zero-sized file, nothing to do!\n");
1510
			return 0;
T
Tom Zanussi 已提交
1511 1512 1513 1514 1515 1516 1517 1518
		}

		scripting_ops = script_spec__lookup(generate_script_lang);
		if (!scripting_ops) {
			fprintf(stderr, "invalid language specifier");
			return -1;
		}

1519 1520
		err = scripting_ops->generate_script(session->pevent,
						     "perf-script");
T
Tom Zanussi 已提交
1521 1522 1523 1524
		goto out;
	}

	if (script_name) {
1525
		err = scripting_ops->start_script(script_name, argc, argv);
T
Tom Zanussi 已提交
1526 1527
		if (err)
			goto out;
1528
		pr_debug("perf script started with script %s\n\n", script_name);
T
Tom Zanussi 已提交
1529 1530
	}

1531 1532 1533 1534 1535

	err = perf_session__check_output_opt(session);
	if (err < 0)
		goto out;

1536
	err = __cmd_script(session);
T
Tom Zanussi 已提交
1537

1538
	perf_session__delete(session);
T
Tom Zanussi 已提交
1539 1540 1541
	cleanup_scripting();
out:
	return err;
F
Frederic Weisbecker 已提交
1542
}