builtin-script.c 70.3 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 "util/thread-stack.h"
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#include "util/time-utils.h"
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#include <linux/bitmap.h>
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#include <linux/stringify.h>
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#include <linux/time64.h>
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#include "asm/bug.h"
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#include "util/mem-events.h"
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#include "util/dump-insn.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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static int			max_blocks;
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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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	PERF_OUTPUT_CALLINDENT	    = 1U << 20,
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	PERF_OUTPUT_INSN	    = 1U << 21,
	PERF_OUTPUT_INSNLEN	    = 1U << 22,
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	PERF_OUTPUT_BRSTACKINSN	    = 1U << 23,
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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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	{.str = "callindent", .field = PERF_OUTPUT_CALLINDENT},
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	{.str = "insn", .field = PERF_OUTPUT_INSN},
	{.str = "insnlen", .field = PERF_OUTPUT_INSNLEN},
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	{.str = "brstackinsn", .field = PERF_OUTPUT_BRSTACKINSN},
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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(BRSTACKINSN) &&
	    !(perf_evlist__combined_branch_type(session->evlist) &
	      PERF_SAMPLE_BRANCH_ANY)) {
		pr_err("Display of branch stack assembler requested, but non all-branch filter set\n"
		       "Hint: run 'perf record -b ...'\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))
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		output[type].print_ip_opts |= EVSEL__PRINT_IP;
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	if (PRINT_FIELD(SYM))
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		output[type].print_ip_opts |= EVSEL__PRINT_SYM;
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	if (PRINT_FIELD(DSO))
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		output[type].print_ip_opts |= EVSEL__PRINT_DSO;
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	if (PRINT_FIELD(SYMOFFSET))
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		output[type].print_ip_opts |= EVSEL__PRINT_SYMOFFSET;
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	if (PRINT_FIELD(SRCLINE))
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		output[type].print_ip_opts |= EVSEL__PRINT_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)
{
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	unsigned int j;
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	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;
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		bool not_pipe = false;
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		evlist__for_each_entry(session->evlist, evsel) {
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			not_pipe = true;
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			if (evsel->attr.sample_type & PERF_SAMPLE_CALLCHAIN) {
				use_callchain = true;
				break;
			}
		}
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		if (not_pipe && !use_callchain)
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			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;

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		evlist__for_each_entry(session->evlist, evsel) {
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			if (evsel->attr.type != j)
				continue;

			attr = &evsel->attr;
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			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);
				goto out;
			}
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		}
	}

out:
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	return 0;
}
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static void print_sample_iregs(struct perf_sample *sample,
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			  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;
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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;
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		secs = nsecs / NSEC_PER_SEC;
		nsecs -= secs * NSEC_PER_SEC;
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		if (nanosecs)
			printf("%5lu.%09llu: ", secs, nsecs);
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		else {
			char sample_time[32];
			timestamp__scnprintf_usec(sample->time, sample_time, sizeof(sample_time));
			printf("%12s: ", sample_time);
		}
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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';
}

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static void print_sample_brstack(struct perf_sample *sample)
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{
	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(struct perf_sample *sample,
				    struct thread *thread)
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{
	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)
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			alf.sym = map__find_symbol(alf.map, alf.addr);
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		thread__find_addr_map(thread, sample->cpumode, MAP__FUNCTION, to, &alt);
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		if (alt.map)
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			alt.sym = map__find_symbol(alt.map, alt.addr);
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		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);
	}
}

559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785
#define MAXBB 16384UL

static int grab_bb(u8 *buffer, u64 start, u64 end,
		    struct machine *machine, struct thread *thread,
		    bool *is64bit, u8 *cpumode, bool last)
{
	long offset, len;
	struct addr_location al;
	bool kernel;

	if (!start || !end)
		return 0;

	kernel = machine__kernel_ip(machine, start);
	if (kernel)
		*cpumode = PERF_RECORD_MISC_KERNEL;
	else
		*cpumode = PERF_RECORD_MISC_USER;

	/*
	 * Block overlaps between kernel and user.
	 * This can happen due to ring filtering
	 * On Intel CPUs the entry into the kernel is filtered,
	 * but the exit is not. Let the caller patch it up.
	 */
	if (kernel != machine__kernel_ip(machine, end)) {
		printf("\tblock %" PRIx64 "-%" PRIx64 " transfers between kernel and user\n",
				start, end);
		return -ENXIO;
	}

	memset(&al, 0, sizeof(al));
	if (end - start > MAXBB - MAXINSN) {
		if (last)
			printf("\tbrstack does not reach to final jump (%" PRIx64 "-%" PRIx64 ")\n", start, end);
		else
			printf("\tblock %" PRIx64 "-%" PRIx64 " (%" PRIu64 ") too long to dump\n", start, end, end - start);
		return 0;
	}

	thread__find_addr_map(thread, *cpumode, MAP__FUNCTION, start, &al);
	if (!al.map || !al.map->dso) {
		printf("\tcannot resolve %" PRIx64 "-%" PRIx64 "\n", start, end);
		return 0;
	}
	if (al.map->dso->data.status == DSO_DATA_STATUS_ERROR) {
		printf("\tcannot resolve %" PRIx64 "-%" PRIx64 "\n", start, end);
		return 0;
	}

	/* Load maps to ensure dso->is_64_bit has been updated */
	map__load(al.map);

	offset = al.map->map_ip(al.map, start);
	len = dso__data_read_offset(al.map->dso, machine, offset, (u8 *)buffer,
				    end - start + MAXINSN);

	*is64bit = al.map->dso->is_64_bit;
	if (len <= 0)
		printf("\tcannot fetch code for block at %" PRIx64 "-%" PRIx64 "\n",
			start, end);
	return len;
}

static void print_jump(uint64_t ip, struct branch_entry *en,
		       struct perf_insn *x, u8 *inbuf, int len,
		       int insn)
{
	printf("\t%016" PRIx64 "\t%-30s\t#%s%s%s%s",
	       ip,
	       dump_insn(x, ip, inbuf, len, NULL),
	       en->flags.predicted ? " PRED" : "",
	       en->flags.mispred ? " MISPRED" : "",
	       en->flags.in_tx ? " INTX" : "",
	       en->flags.abort ? " ABORT" : "");
	if (en->flags.cycles) {
		printf(" %d cycles", en->flags.cycles);
		if (insn)
			printf(" %.2f IPC", (float)insn / en->flags.cycles);
	}
	putchar('\n');
}

static void print_ip_sym(struct thread *thread, u8 cpumode, int cpu,
			 uint64_t addr, struct symbol **lastsym,
			 struct perf_event_attr *attr)
{
	struct addr_location al;
	int off;

	memset(&al, 0, sizeof(al));

	thread__find_addr_map(thread, cpumode, MAP__FUNCTION, addr, &al);
	if (!al.map)
		thread__find_addr_map(thread, cpumode, MAP__VARIABLE,
				      addr, &al);
	if ((*lastsym) && al.addr >= (*lastsym)->start && al.addr < (*lastsym)->end)
		return;

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

	if (!al.sym)
		return;

	if (al.addr < al.sym->end)
		off = al.addr - al.sym->start;
	else
		off = al.addr - al.map->start - al.sym->start;
	printf("\t%s", al.sym->name);
	if (off)
		printf("%+d", off);
	putchar(':');
	if (PRINT_FIELD(SRCLINE))
		map__fprintf_srcline(al.map, al.addr, "\t", stdout);
	putchar('\n');
	*lastsym = al.sym;
}

static void print_sample_brstackinsn(struct perf_sample *sample,
				     struct thread *thread,
				     struct perf_event_attr *attr,
				     struct machine *machine)
{
	struct branch_stack *br = sample->branch_stack;
	u64 start, end;
	int i, insn, len, nr, ilen;
	struct perf_insn x;
	u8 buffer[MAXBB];
	unsigned off;
	struct symbol *lastsym = NULL;

	if (!(br && br->nr))
		return;
	nr = br->nr;
	if (max_blocks && nr > max_blocks + 1)
		nr = max_blocks + 1;

	x.thread = thread;
	x.cpu = sample->cpu;

	putchar('\n');

	/* Handle first from jump, of which we don't know the entry. */
	len = grab_bb(buffer, br->entries[nr-1].from,
			br->entries[nr-1].from,
			machine, thread, &x.is64bit, &x.cpumode, false);
	if (len > 0) {
		print_ip_sym(thread, x.cpumode, x.cpu,
			     br->entries[nr - 1].from, &lastsym, attr);
		print_jump(br->entries[nr - 1].from, &br->entries[nr - 1],
			    &x, buffer, len, 0);
	}

	/* Print all blocks */
	for (i = nr - 2; i >= 0; i--) {
		if (br->entries[i].from || br->entries[i].to)
			pr_debug("%d: %" PRIx64 "-%" PRIx64 "\n", i,
				 br->entries[i].from,
				 br->entries[i].to);
		start = br->entries[i + 1].to;
		end   = br->entries[i].from;

		len = grab_bb(buffer, start, end, machine, thread, &x.is64bit, &x.cpumode, false);
		/* Patch up missing kernel transfers due to ring filters */
		if (len == -ENXIO && i > 0) {
			end = br->entries[--i].from;
			pr_debug("\tpatching up to %" PRIx64 "-%" PRIx64 "\n", start, end);
			len = grab_bb(buffer, start, end, machine, thread, &x.is64bit, &x.cpumode, false);
		}
		if (len <= 0)
			continue;

		insn = 0;
		for (off = 0;; off += ilen) {
			uint64_t ip = start + off;

			print_ip_sym(thread, x.cpumode, x.cpu, ip, &lastsym, attr);
			if (ip == end) {
				print_jump(ip, &br->entries[i], &x, buffer + off, len - off, insn);
				break;
			} else {
				printf("\t%016" PRIx64 "\t%s\n", ip,
					dump_insn(&x, ip, buffer + off, len - off, &ilen));
				if (ilen == 0)
					break;
				insn++;
			}
		}
	}

	/*
	 * Hit the branch? In this case we are already done, and the target
	 * has not been executed yet.
	 */
	if (br->entries[0].from == sample->ip)
		return;
	if (br->entries[0].flags.abort)
		return;

	/*
	 * Print final block upto sample
	 */
	start = br->entries[0].to;
	end = sample->ip;
	len = grab_bb(buffer, start, end, machine, thread, &x.is64bit, &x.cpumode, true);
	print_ip_sym(thread, x.cpumode, x.cpu, start, &lastsym, attr);
	if (len <= 0) {
		/* Print at least last IP if basic block did not work */
		len = grab_bb(buffer, sample->ip, sample->ip,
			      machine, thread, &x.is64bit, &x.cpumode, false);
		if (len <= 0)
			return;

		printf("\t%016" PRIx64 "\t%s\n", sample->ip,
			dump_insn(&x, sample->ip, buffer, len, NULL));
		return;
	}
	for (off = 0; off <= end - start; off += ilen) {
		printf("\t%016" PRIx64 "\t%s\n", start + off,
			dump_insn(&x, start + off, buffer + off, len - off, &ilen));
		if (ilen == 0)
			break;
	}
}
786

787
static void print_sample_addr(struct perf_sample *sample,
788 789 790 791 792 793 794 795 796 797
			  struct thread *thread,
			  struct perf_event_attr *attr)
{
	struct addr_location al;

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

	if (!sample_addr_correlates_sym(attr))
		return;

798
	thread__resolve(thread, &al, sample);
799 800

	if (PRINT_FIELD(SYM)) {
801
		printf(" ");
802 803 804 805
		if (PRINT_FIELD(SYMOFFSET))
			symbol__fprintf_symname_offs(al.sym, &al, stdout);
		else
			symbol__fprintf_symname(al.sym, stdout);
806 807 808
	}

	if (PRINT_FIELD(DSO)) {
809 810 811
		printf(" (");
		map__fprintf_dsoname(al.map, stdout);
		printf(")");
812 813 814
	}
}

815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870
static void print_sample_callindent(struct perf_sample *sample,
				    struct perf_evsel *evsel,
				    struct thread *thread,
				    struct addr_location *al)
{
	struct perf_event_attr *attr = &evsel->attr;
	size_t depth = thread_stack__depth(thread);
	struct addr_location addr_al;
	const char *name = NULL;
	static int spacing;
	int len = 0;
	u64 ip = 0;

	/*
	 * The 'return' has already been popped off the stack so the depth has
	 * to be adjusted to match the 'call'.
	 */
	if (thread->ts && sample->flags & PERF_IP_FLAG_RETURN)
		depth += 1;

	if (sample->flags & (PERF_IP_FLAG_CALL | PERF_IP_FLAG_TRACE_BEGIN)) {
		if (sample_addr_correlates_sym(attr)) {
			thread__resolve(thread, &addr_al, sample);
			if (addr_al.sym)
				name = addr_al.sym->name;
			else
				ip = sample->addr;
		} else {
			ip = sample->addr;
		}
	} else if (sample->flags & (PERF_IP_FLAG_RETURN | PERF_IP_FLAG_TRACE_END)) {
		if (al->sym)
			name = al->sym->name;
		else
			ip = sample->ip;
	}

	if (name)
		len = printf("%*s%s", (int)depth * 4, "", name);
	else if (ip)
		len = printf("%*s%16" PRIx64, (int)depth * 4, "", ip);

	if (len < 0)
		return;

	/*
	 * Try to keep the output length from changing frequently so that the
	 * output lines up more nicely.
	 */
	if (len > spacing || (len && len < spacing - 52))
		spacing = round_up(len + 4, 32);

	if (len < spacing)
		printf("%*s", spacing - len, "");
}

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Andi Kleen 已提交
871
static void print_insn(struct perf_sample *sample,
872 873 874
		       struct perf_event_attr *attr,
		       struct thread *thread,
		       struct machine *machine)
A
Andi Kleen 已提交
875 876 877 878 879 880 881 882 883 884
{
	if (PRINT_FIELD(INSNLEN))
		printf(" ilen: %d", sample->insn_len);
	if (PRINT_FIELD(INSN)) {
		int i;

		printf(" insn:");
		for (i = 0; i < sample->insn_len; i++)
			printf(" %02x", (unsigned char)sample->insn[i]);
	}
885 886
	if (PRINT_FIELD(BRSTACKINSN))
		print_sample_brstackinsn(sample, thread, attr, machine);
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Andi Kleen 已提交
887 888
}

889
static void print_sample_bts(struct perf_sample *sample,
890
			     struct perf_evsel *evsel,
891
			     struct thread *thread,
892 893
			     struct addr_location *al,
			     struct machine *machine)
894 895
{
	struct perf_event_attr *attr = &evsel->attr;
896
	bool print_srcline_last = false;
897

898 899 900
	if (PRINT_FIELD(CALLINDENT))
		print_sample_callindent(sample, evsel, thread, al);

901 902
	/* print branch_from information */
	if (PRINT_FIELD(IP)) {
903
		unsigned int print_opts = output[attr->type].print_ip_opts;
904
		struct callchain_cursor *cursor = NULL;
905

906
		if (symbol_conf.use_callchain && sample->callchain &&
907
		    thread__resolve_callchain(al->thread, &callchain_cursor, evsel,
908
					      sample, NULL, NULL, scripting_max_stack) == 0)
909
			cursor = &callchain_cursor;
910 911 912

		if (cursor == NULL) {
			putchar(' ');
913
			if (print_opts & EVSEL__PRINT_SRCLINE) {
914
				print_srcline_last = true;
915
				print_opts &= ~EVSEL__PRINT_SRCLINE;
916
			}
917 918 919 920
		} else
			putchar('\n');

		sample__fprintf_sym(sample, al, 0, print_opts, cursor, stdout);
921 922 923
	}

	/* print branch_to information */
924 925
	if (PRINT_FIELD(ADDR) ||
	    ((evsel->attr.sample_type & PERF_SAMPLE_ADDR) &&
926 927
	     !output[attr->type].user_set)) {
		printf(" => ");
928
		print_sample_addr(sample, thread, attr);
929
	}
930

931 932 933
	if (print_srcline_last)
		map__fprintf_srcline(al->map, al->addr, "\n  ", stdout);

934
	print_insn(sample, attr, thread, machine);
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Andi Kleen 已提交
935

936 937 938
	printf("\n");
}

939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958
static struct {
	u32 flags;
	const char *name;
} sample_flags[] = {
	{PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_CALL, "call"},
	{PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_RETURN, "return"},
	{PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_CONDITIONAL, "jcc"},
	{PERF_IP_FLAG_BRANCH, "jmp"},
	{PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_CALL | PERF_IP_FLAG_INTERRUPT, "int"},
	{PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_RETURN | PERF_IP_FLAG_INTERRUPT, "iret"},
	{PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_CALL | PERF_IP_FLAG_SYSCALLRET, "syscall"},
	{PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_RETURN | PERF_IP_FLAG_SYSCALLRET, "sysret"},
	{PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_ASYNC, "async"},
	{PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_CALL | PERF_IP_FLAG_ASYNC |	PERF_IP_FLAG_INTERRUPT, "hw int"},
	{PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_TX_ABORT, "tx abrt"},
	{PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_TRACE_BEGIN, "tr strt"},
	{PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_TRACE_END, "tr end"},
	{0, NULL}
};

959 960 961 962
static void print_sample_flags(u32 flags)
{
	const char *chars = PERF_IP_FLAG_CHARS;
	const int n = strlen(PERF_IP_FLAG_CHARS);
963 964
	bool in_tx = flags & PERF_IP_FLAG_IN_TX;
	const char *name = NULL;
965 966 967
	char str[33];
	int i, pos = 0;

968 969 970 971 972 973 974
	for (i = 0; sample_flags[i].name ; i++) {
		if (sample_flags[i].flags == (flags & ~PERF_IP_FLAG_IN_TX)) {
			name = sample_flags[i].name;
			break;
		}
	}

975 976 977 978 979 980 981 982 983
	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;
984 985 986 987 988

	if (name)
		printf("  %-7s%4s ", name, in_tx ? "(x)" : "");
	else
		printf("  %-11s ", str);
989 990
}

991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 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
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));
}

1069 1070 1071 1072 1073 1074
struct perf_script {
	struct perf_tool	tool;
	struct perf_session	*session;
	bool			show_task_events;
	bool			show_mmap_events;
	bool			show_switch_events;
1075
	bool			show_namespace_events;
1076 1077 1078
	bool			allocated;
	struct cpu_map		*cpus;
	struct thread_map	*threads;
1079
	int			name_width;
1080 1081
	const char              *time_str;
	struct perf_time_interval ptime;
1082 1083
};

1084 1085 1086 1087 1088
static int perf_evlist__max_name_len(struct perf_evlist *evlist)
{
	struct perf_evsel *evsel;
	int max = 0;

1089
	evlist__for_each_entry(evlist, evsel) {
1090 1091 1092 1093 1094 1095 1096 1097
		int len = strlen(perf_evsel__name(evsel));

		max = MAX(len, max);
	}

	return max;
}

J
Jiri Olsa 已提交
1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114
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);
}

1115
static void process_event(struct perf_script *script,
1116
			  struct perf_sample *sample, struct perf_evsel *evsel,
1117 1118
			  struct addr_location *al,
			  struct machine *machine)
1119
{
1120
	struct thread *thread = al->thread;
1121
	struct perf_event_attr *attr = &evsel->attr;
1122

1123
	if (output[attr->type].fields == 0)
1124 1125
		return;

1126
	print_sample_start(sample, thread, evsel);
1127

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Jiri Olsa 已提交
1128 1129 1130
	if (PRINT_FIELD(PERIOD))
		printf("%10" PRIu64 " ", sample->period);

1131 1132
	if (PRINT_FIELD(EVNAME)) {
		const char *evname = perf_evsel__name(evsel);
1133 1134 1135 1136 1137 1138

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

		printf("%*s: ", script->name_width,
		       evname ? evname : "[unknown]");
1139 1140
	}

1141 1142 1143
	if (print_flags)
		print_sample_flags(sample->flags);

1144
	if (is_bts_event(attr)) {
1145
		print_sample_bts(sample, evsel, thread, al, machine);
1146 1147 1148
		return;
	}

1149
	if (PRINT_FIELD(TRACE))
1150 1151
		event_format__print(evsel->tp_format, sample->cpu,
				    sample->raw_data, sample->raw_size);
1152
	if (PRINT_FIELD(ADDR))
1153
		print_sample_addr(sample, thread, attr);
1154

1155
	if (PRINT_FIELD(DATA_SRC))
J
Jiri Olsa 已提交
1156
		data_src__printf(sample->data_src);
1157 1158 1159 1160

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

1161
	if (PRINT_FIELD(IP)) {
1162
		struct callchain_cursor *cursor = NULL;
1163

1164
		if (symbol_conf.use_callchain && sample->callchain &&
1165
		    thread__resolve_callchain(al->thread, &callchain_cursor, evsel,
1166
					      sample, NULL, NULL, scripting_max_stack) == 0)
1167
			cursor = &callchain_cursor;
1168

1169 1170
		putchar(cursor ? '\n' : ' ');
		sample__fprintf_sym(sample, al, 0, output[attr->type].print_ip_opts, cursor, stdout);
1171 1172
	}

1173
	if (PRINT_FIELD(IREGS))
1174
		print_sample_iregs(sample, attr);
1175

1176
	if (PRINT_FIELD(BRSTACK))
1177
		print_sample_brstack(sample);
1178
	else if (PRINT_FIELD(BRSTACKSYM))
1179
		print_sample_brstacksym(sample, thread);
1180

1181 1182
	if (perf_evsel__is_bpf_output(evsel) && PRINT_FIELD(BPF_OUTPUT))
		print_sample_bpf_output(sample);
1183
	print_insn(sample, attr, thread, machine);
1184
	printf("\n");
1185 1186
}

T
Tom Zanussi 已提交
1187 1188
static struct scripting_ops	*scripting_ops;

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 1222
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));
		}
	}
}

1223 1224 1225 1226
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);
1227 1228
	else
		__process_stat(counter, tstamp);
1229 1230 1231 1232 1233 1234 1235 1236
}

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
1237 1238
static void setup_scripting(void)
{
1239
	setup_perl_scripting();
1240
	setup_python_scripting();
T
Tom Zanussi 已提交
1241 1242
}

1243 1244
static int flush_scripting(void)
{
1245
	return scripting_ops ? scripting_ops->flush_script() : 0;
1246 1247
}

T
Tom Zanussi 已提交
1248 1249
static int cleanup_scripting(void)
{
1250
	pr_debug("\nperf script stopped\n");
1251

1252
	return scripting_ops ? scripting_ops->stop_script() : 0;
T
Tom Zanussi 已提交
1253 1254
}

1255
static int process_sample_event(struct perf_tool *tool,
1256
				union perf_event *event,
1257
				struct perf_sample *sample,
1258
				struct perf_evsel *evsel,
1259
				struct machine *machine)
F
Frederic Weisbecker 已提交
1260
{
1261
	struct perf_script *scr = container_of(tool, struct perf_script, tool);
1262
	struct addr_location al;
F
Frederic Weisbecker 已提交
1263

1264 1265 1266
	if (perf_time__skip_sample(&scr->ptime, sample->time))
		return 0;

1267 1268 1269 1270 1271 1272
	if (debug_mode) {
		if (sample->time < last_timestamp) {
			pr_err("Samples misordered, previous: %" PRIu64
				" this: %" PRIu64 "\n", last_timestamp,
				sample->time);
			nr_unordered++;
1273
		}
1274 1275
		last_timestamp = sample->time;
		return 0;
F
Frederic Weisbecker 已提交
1276
	}
1277

1278
	if (machine__resolve(machine, &al, sample) < 0) {
1279 1280 1281 1282 1283 1284
		pr_err("problem processing %d event, skipping it.\n",
		       event->header.type);
		return -1;
	}

	if (al.filtered)
1285
		goto out_put;
1286

1287
	if (cpu_list && !test_bit(sample->cpu, cpu_bitmap))
1288
		goto out_put;
1289

1290 1291 1292
	if (scripting_ops)
		scripting_ops->process_event(event, sample, evsel, &al);
	else
1293
		process_event(scr, sample, evsel, &al, machine);
1294

1295 1296
out_put:
	addr_location__put(&al);
F
Frederic Weisbecker 已提交
1297 1298 1299
	return 0;
}

1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317
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;

1318
	evlist__for_each_entry(evlist, pos) {
1319 1320 1321 1322 1323 1324
		if (pos->attr.type == evsel->attr.type && pos != evsel)
			return 0;
	}

	set_print_ip_opts(&evsel->attr);

1325 1326 1327 1328
	if (evsel->attr.sample_type)
		err = perf_evsel__check_attr(evsel, scr->session);

	return err;
1329 1330
}

1331 1332 1333 1334 1335 1336 1337 1338
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;
1339
	struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id);
1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360
	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:
1361
	thread__put(thread);
1362 1363 1364
	return ret;
}

1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399
static int process_namespaces_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);
	int ret = -1;

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

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

	if (!evsel->attr.sample_id_all) {
		sample->cpu = 0;
		sample->time = 0;
		sample->tid = event->namespaces.tid;
		sample->pid = event->namespaces.pid;
	}
	print_sample_start(sample, thread, evsel);
	perf_event__fprintf(event, stdout);
	ret = 0;
out:
	thread__put(thread);
	return ret;
}

1400 1401 1402 1403 1404 1405 1406 1407
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;
1408
	struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id);
1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426

	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);
1427
	thread__put(thread);
1428 1429 1430 1431 1432 1433 1434 1435

	return 0;
}
static int process_exit_event(struct perf_tool *tool,
			      union perf_event *event,
			      struct perf_sample *sample,
			      struct machine *machine)
{
1436
	int err = 0;
1437 1438 1439
	struct thread *thread;
	struct perf_script *script = container_of(tool, struct perf_script, tool);
	struct perf_session *session = script->session;
1440
	struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id);
1441 1442 1443 1444 1445 1446 1447 1448 1449 1450

	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;
1451 1452
		sample->tid = event->fork.tid;
		sample->pid = event->fork.pid;
1453 1454 1455 1456 1457
	}
	print_sample_start(sample, thread, evsel);
	perf_event__fprintf(event, stdout);

	if (perf_event__process_exit(tool, event, sample, machine) < 0)
1458
		err = -1;
1459

1460 1461
	thread__put(thread);
	return err;
1462 1463
}

1464 1465 1466 1467 1468 1469 1470 1471
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;
1472
	struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id);
1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490

	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);
1491
	thread__put(thread);
1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502
	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;
1503
	struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id);
1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521

	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);
1522
	thread__put(thread);
1523 1524 1525
	return 0;
}

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
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;
}

1552
static void sig_handler(int sig __maybe_unused)
1553 1554 1555 1556
{
	session_done = 1;
}

1557
static int __cmd_script(struct perf_script *script)
F
Frederic Weisbecker 已提交
1558
{
1559 1560
	int ret;

1561 1562
	signal(SIGINT, sig_handler);

1563 1564 1565 1566 1567 1568
	/* 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;
	}
1569 1570 1571 1572
	if (script->show_mmap_events) {
		script->tool.mmap = process_mmap_event;
		script->tool.mmap2 = process_mmap2_event;
	}
1573 1574
	if (script->show_switch_events)
		script->tool.context_switch = process_switch_event;
1575 1576
	if (script->show_namespace_events)
		script->tool.namespaces = process_namespaces_event;
1577

1578
	ret = perf_session__process_events(script->session);
1579

1580
	if (debug_mode)
1581
		pr_err("Misordered timestamps: %" PRIu64 "\n", nr_unordered);
1582 1583

	return ret;
F
Frederic Weisbecker 已提交
1584 1585
}

T
Tom Zanussi 已提交
1586 1587 1588 1589 1590 1591
struct script_spec {
	struct list_head	node;
	struct scripting_ops	*ops;
	char			spec[0];
};

1592
static LIST_HEAD(script_specs);
T
Tom Zanussi 已提交
1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629

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;

1630
	s = script_spec__new(spec, ops);
T
Tom Zanussi 已提交
1631 1632
	if (!s)
		return -1;
1633 1634
	else
		script_spec__add(s);
T
Tom Zanussi 已提交
1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653

	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 "
1654
		"perf script -s [spec:]script.[spec]):\n\n");
T
Tom Zanussi 已提交
1655 1656 1657 1658 1659 1660 1661

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

	fprintf(stderr, "\n");
}

1662 1663
static int parse_scriptname(const struct option *opt __maybe_unused,
			    const char *str, int unset __maybe_unused)
T
Tom Zanussi 已提交
1664 1665 1666 1667 1668
{
	char spec[PATH_MAX];
	const char *script, *ext;
	int len;

1669
	if (strcmp(str, "lang") == 0) {
T
Tom Zanussi 已提交
1670
		list_available_languages();
1671
		exit(0);
T
Tom Zanussi 已提交
1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690
	}

	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;
1691
		ext = strrchr(script, '.');
T
Tom Zanussi 已提交
1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707
		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;
}

1708 1709
static int parse_output_fields(const struct option *opt __maybe_unused,
			    const char *arg, int unset __maybe_unused)
1710
{
1711
	char *tok, *strtok_saveptr = NULL;
1712
	int i, imax = ARRAY_SIZE(all_output_options);
1713
	int j;
1714 1715
	int rc = 0;
	char *str = strdup(arg);
1716
	int type = -1;
1717 1718 1719 1720

	if (!str)
		return -ENOMEM;

1721 1722 1723
	/* 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.
1724
	 */
1725 1726 1727 1728 1729 1730 1731 1732 1733 1734
	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;
1735 1736
		else if (!strcmp(str, "raw"))
			type = PERF_TYPE_RAW;
1737 1738
		else if (!strcmp(str, "break"))
			type = PERF_TYPE_BREAKPOINT;
1739 1740
		else {
			fprintf(stderr, "Invalid event type in field string.\n");
1741 1742
			rc = -EINVAL;
			goto out;
1743 1744 1745 1746 1747 1748 1749 1750
		}

		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;
1751
		output[type].wildcard_set = false;
1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767

	} 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;
1768
			output[j].wildcard_set = true;
1769
		}
1770 1771
	}

1772
	for (tok = strtok_r(tok, ",", &strtok_saveptr); tok; tok = strtok_r(NULL, ",", &strtok_saveptr)) {
1773
		for (i = 0; i < imax; ++i) {
1774
			if (strcmp(tok, all_output_options[i].str) == 0)
1775 1776
				break;
		}
1777 1778 1779 1780
		if (i == imax && strcmp(tok, "flags") == 0) {
			print_flags = true;
			continue;
		}
1781
		if (i == imax) {
1782
			fprintf(stderr, "Invalid field requested.\n");
1783
			rc = -EINVAL;
1784
			goto out;
1785 1786
		}

1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807
		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;
		}
1808 1809
	}

1810 1811 1812 1813 1814 1815
	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));
		}
	}
1816

1817
out:
1818 1819 1820 1821
	free(str);
	return rc;
}

1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834
/* 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);
}

1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847
#define for_each_lang(scripts_path, scripts_dir, lang_dirent)		\
	while ((lang_dirent = readdir(scripts_dir)) != NULL)		\
		if ((lang_dirent->d_type == DT_DIR ||			\
		     (lang_dirent->d_type == DT_UNKNOWN &&		\
		      is_directory(scripts_path, lang_dirent))) &&	\
		    (strcmp(lang_dirent->d_name, ".")) &&		\
		    (strcmp(lang_dirent->d_name, "..")))

#define for_each_script(lang_path, lang_dir, script_dirent)		\
	while ((script_dirent = readdir(lang_dir)) != NULL)		\
		if (script_dirent->d_type != DT_DIR &&			\
		    (script_dirent->d_type != DT_UNKNOWN ||		\
		     !is_directory(lang_path, script_dirent)))
1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859


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

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

1860
static LIST_HEAD(script_descs);
1861 1862 1863 1864 1865

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

1866
	if (s != NULL && name)
1867 1868 1869 1870 1871 1872 1873
		s->name = strdup(name);

	return s;
}

static void script_desc__delete(struct script_desc *s)
{
1874 1875 1876
	zfree(&s->name);
	zfree(&s->half_liner);
	zfree(&s->args);
1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915
	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;
}

1916
static const char *ends_with(const char *str, const char *suffix)
1917 1918
{
	size_t suffix_len = strlen(suffix);
1919
	const char *p = str;
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 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970

	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;
}

1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988
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;
}

1989 1990 1991
static int list_available_scripts(const struct option *opt __maybe_unused,
				  const char *s __maybe_unused,
				  int unset __maybe_unused)
1992
{
1993
	struct dirent *script_dirent, *lang_dirent;
1994 1995 1996 1997 1998 1999 2000 2001
	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;

2002
	snprintf(scripts_path, MAXPATHLEN, "%s/scripts", get_argv_exec_path());
2003 2004

	scripts_dir = opendir(scripts_path);
2005 2006 2007 2008 2009 2010 2011
	if (!scripts_dir) {
		fprintf(stdout,
			"open(%s) failed.\n"
			"Check \"PERF_EXEC_PATH\" env to set scripts dir.\n",
			scripts_path);
		exit(-1);
	}
2012

2013
	for_each_lang(scripts_path, scripts_dir, lang_dirent) {
2014
		snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path,
2015
			 lang_dirent->d_name);
2016 2017 2018 2019
		lang_dir = opendir(lang_path);
		if (!lang_dir)
			continue;

2020 2021
		for_each_script(lang_path, lang_dir, script_dirent) {
			script_root = get_script_root(script_dirent, REPORT_SUFFIX);
2022
			if (script_root) {
2023 2024
				desc = script_desc__findnew(script_root);
				snprintf(script_path, MAXPATHLEN, "%s/%s",
2025
					 lang_path, script_dirent->d_name);
2026
				read_script_info(desc, script_path);
2027
				free(script_root);
2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042
			}
		}
	}

	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);
}

2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085
/*
 * 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;
2086
			evlist__for_each_entry(session->evlist, pos) {
2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103
				if (!strcmp(perf_evsel__name(pos), evname)) {
					match = 1;
					break;
				}
			}

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

	fclose(fp);
	return 0;
}

2104 2105 2106 2107 2108 2109 2110 2111 2112
/*
 * 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)
{
2113
	struct dirent *script_dirent, *lang_dirent;
2114
	char scripts_path[MAXPATHLEN], lang_path[MAXPATHLEN];
2115
	DIR *scripts_dir, *lang_dir;
2116
	struct perf_session *session;
2117 2118 2119 2120
	struct perf_data_file file = {
		.path = input_name,
		.mode = PERF_DATA_MODE_READ,
	};
2121 2122 2123
	char *temp;
	int i = 0;

2124
	session = perf_session__new(&file, false, NULL);
2125 2126 2127
	if (!session)
		return -1;

2128
	snprintf(scripts_path, MAXPATHLEN, "%s/scripts", get_argv_exec_path());
2129 2130

	scripts_dir = opendir(scripts_path);
2131 2132
	if (!scripts_dir) {
		perf_session__delete(session);
2133
		return -1;
2134
	}
2135

2136
	for_each_lang(scripts_path, scripts_dir, lang_dirent) {
2137
		snprintf(lang_path, MAXPATHLEN, "%s/%s", scripts_path,
2138
			 lang_dirent->d_name);
2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151
#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;

2152
		for_each_script(lang_path, lang_dir, script_dirent) {
2153
			/* Skip those real time scripts: xxxtop.p[yl] */
2154
			if (strstr(script_dirent->d_name, "top."))
2155 2156
				continue;
			sprintf(scripts_path_array[i], "%s/%s", lang_path,
2157 2158
				script_dirent->d_name);
			temp = strchr(script_dirent->d_name, '.');
2159
			snprintf(scripts_array[i],
2160 2161
				(temp - script_dirent->d_name) + 1,
				"%s", script_dirent->d_name);
2162 2163 2164 2165 2166

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

2167 2168
			i++;
		}
2169
		closedir(lang_dir);
2170 2171
	}

2172 2173
	closedir(scripts_dir);
	perf_session__delete(session);
2174 2175 2176
	return i;
}

2177 2178
static char *get_script_path(const char *script_root, const char *suffix)
{
2179
	struct dirent *script_dirent, *lang_dirent;
2180 2181 2182 2183
	char scripts_path[MAXPATHLEN];
	char script_path[MAXPATHLEN];
	DIR *scripts_dir, *lang_dir;
	char lang_path[MAXPATHLEN];
2184
	char *__script_root;
2185

2186
	snprintf(scripts_path, MAXPATHLEN, "%s/scripts", get_argv_exec_path());
2187 2188 2189 2190 2191

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

2192
	for_each_lang(scripts_path, scripts_dir, lang_dirent) {
2193
		snprintf(lang_path, MAXPATHLEN, "%s/%s/bin", scripts_path,
2194
			 lang_dirent->d_name);
2195 2196 2197 2198
		lang_dir = opendir(lang_path);
		if (!lang_dir)
			continue;

2199 2200
		for_each_script(lang_path, lang_dir, script_dirent) {
			__script_root = get_script_root(script_dirent, suffix);
2201 2202
			if (__script_root && !strcmp(script_root, __script_root)) {
				free(__script_root);
2203 2204
				closedir(lang_dir);
				closedir(scripts_dir);
2205
				snprintf(script_path, MAXPATHLEN, "%s/%s",
2206
					 lang_path, script_dirent->d_name);
2207
				return strdup(script_path);
2208 2209 2210
			}
			free(__script_root);
		}
2211
		closedir(lang_dir);
2212
	}
2213
	closedir(scripts_dir);
2214

2215
	return NULL;
2216 2217
}

2218 2219
static bool is_top_script(const char *script_path)
{
2220
	return ends_with(script_path, "top") == NULL ? false : true;
2221 2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245
}

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;
}

2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258
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
2259

2260 2261 2262 2263 2264
	system_wide = (argc == 0);

	return 0;
}

2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280
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;
	}
}

2281 2282 2283 2284 2285 2286 2287
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;

2288
	evlist__for_each_entry(session->evlist, counter) {
2289 2290 2291 2292 2293 2294 2295 2296
		perf_stat_process_counter(&stat_config, counter);
		process_stat(counter, round->time);
	}

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

2297 2298 2299 2300 2301 2302 2303 2304
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;
}

2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361
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);
}

2362
int cmd_script(int argc, const char **argv)
2363 2364
{
	bool show_full_info = false;
2365 2366
	bool header = false;
	bool header_only = false;
2367
	bool script_started = false;
2368 2369 2370
	char *rec_script_path = NULL;
	char *rep_script_path = NULL;
	struct perf_session *session;
2371
	struct itrace_synth_opts itrace_synth_opts = { .set = false, };
2372 2373
	char *script_path = NULL;
	const char **__argv;
2374
	int i, j, err = 0;
2375 2376 2377 2378 2379 2380
	struct perf_script script = {
		.tool = {
			.sample		 = process_sample_event,
			.mmap		 = perf_event__process_mmap,
			.mmap2		 = perf_event__process_mmap2,
			.comm		 = perf_event__process_comm,
2381
			.namespaces	 = perf_event__process_namespaces,
2382 2383
			.exit		 = perf_event__process_exit,
			.fork		 = perf_event__process_fork,
2384
			.attr		 = process_attr,
2385
			.event_update   = perf_event__process_event_update,
2386 2387
			.tracing_data	 = perf_event__process_tracing_data,
			.build_id	 = perf_event__process_build_id,
2388 2389 2390 2391
			.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,
2392 2393
			.stat		 = perf_event__process_stat_event,
			.stat_round	 = process_stat_round_event,
2394
			.stat_config	 = process_stat_config_event,
2395 2396
			.thread_map	 = process_thread_map_event,
			.cpu_map	 = process_cpu_map_event,
2397
			.ordered_events	 = true,
2398 2399 2400
			.ordering_requires_timestamps = true,
		},
	};
2401 2402 2403
	struct perf_data_file file = {
		.mode = PERF_DATA_MODE_READ,
	};
2404
	const struct option options[] = {
F
Frederic Weisbecker 已提交
2405 2406
	OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
		    "dump raw trace in ASCII"),
2407
	OPT_INCR('v', "verbose", &verbose,
2408
		 "be more verbose (show symbol address, etc)"),
2409
	OPT_BOOLEAN('L', "Latency", &latency_format,
2410
		    "show latency attributes (irqs/preemption disabled, etc)"),
2411 2412
	OPT_CALLBACK_NOOPT('l', "list", NULL, NULL, "list available scripts",
			   list_available_scripts),
T
Tom Zanussi 已提交
2413 2414 2415 2416
	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",
2417
		   "generate perf-script.xx script in specified language"),
2418
	OPT_STRING('i', "input", &input_name, "file", "input file name"),
2419 2420
	OPT_BOOLEAN('d', "debug-mode", &debug_mode,
		   "do various checks like samples ordering and lost events"),
2421 2422
	OPT_BOOLEAN(0, "header", &header, "Show data header."),
	OPT_BOOLEAN(0, "header-only", &header_only, "Show only data header."),
2423 2424 2425 2426 2427 2428
	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"),
2429 2430 2431
	OPT_CALLBACK(0, "symfs", NULL, "directory",
		     "Look for files with symbols relative to this directory",
		     symbol__config_symfs),
2432
	OPT_CALLBACK('F', "fields", NULL, "str",
2433 2434 2435
		     "comma separated output fields prepend with 'type:'. "
		     "Valid types: hw,sw,trace,raw. "
		     "Fields: comm,tid,pid,time,cpu,event,trace,ip,sym,dso,"
2436
		     "addr,symoff,period,iregs,brstack,brstacksym,flags,"
2437 2438
		     "bpf-output,callindent,insn,insnlen,brstackinsn",
		     parse_output_fields),
2439
	OPT_BOOLEAN('a', "all-cpus", &system_wide,
2440
		    "system-wide collection from all CPUs"),
2441 2442
	OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
		   "only consider these symbols"),
2443 2444
	OPT_STRING(0, "stop-bt", &symbol_conf.bt_stop_list_str, "symbol[,symbol...]",
		   "Stop display of callgraph at these symbols"),
2445
	OPT_STRING('C', "cpu", &cpu_list, "cpu", "list of cpus to profile"),
2446 2447
	OPT_STRING('c', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
		   "only display events for these comms"),
2448 2449 2450 2451
	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"),
2452 2453 2454
	OPT_UINTEGER(0, "max-stack", &scripting_max_stack,
		     "Set the maximum stack depth when parsing the callchain, "
		     "anything beyond the specified depth will be ignored. "
2455
		     "Default: kernel.perf_event_max_stack or " __stringify(PERF_MAX_STACK_DEPTH)),
2456 2457
	OPT_BOOLEAN('I', "show-info", &show_full_info,
		    "display extended information from perf.data file"),
2458 2459
	OPT_BOOLEAN('\0', "show-kernel-path", &symbol_conf.show_kernel_path,
		    "Show the path of [kernel.kallsyms]"),
2460 2461
	OPT_BOOLEAN('\0', "show-task-events", &script.show_task_events,
		    "Show the fork/comm/exit events"),
2462 2463
	OPT_BOOLEAN('\0', "show-mmap-events", &script.show_mmap_events,
		    "Show the mmap events"),
2464 2465
	OPT_BOOLEAN('\0', "show-switch-events", &script.show_switch_events,
		    "Show context switch events (if recorded)"),
2466 2467
	OPT_BOOLEAN('\0', "show-namespace-events", &script.show_namespace_events,
		    "Show namespace events (if recorded)"),
2468
	OPT_BOOLEAN('f', "force", &symbol_conf.force, "don't complain, do it"),
2469 2470
	OPT_INTEGER(0, "max-blocks", &max_blocks,
		    "Maximum number of code blocks to dump with brstackinsn"),
2471 2472
	OPT_BOOLEAN(0, "ns", &nanosecs,
		    "Use 9 decimal places when displaying time"),
2473 2474 2475
	OPT_CALLBACK_OPTARG(0, "itrace", &itrace_synth_opts, NULL, "opts",
			    "Instruction Tracing options",
			    itrace_parse_synth_opts),
2476 2477
	OPT_BOOLEAN(0, "full-source-path", &srcline_full_filename,
			"Show full source file name path for source lines"),
2478 2479 2480 2481
	OPT_BOOLEAN(0, "demangle", &symbol_conf.demangle,
			"Enable symbol demangling"),
	OPT_BOOLEAN(0, "demangle-kernel", &symbol_conf.demangle_kernel,
			"Enable kernel symbol demangling"),
2482 2483
	OPT_STRING(0, "time", &script.time_str, "str",
		   "Time span of interest (start,stop)"),
2484
	OPT_END()
2485
	};
2486 2487
	const char * const script_subcommands[] = { "record", "report", NULL };
	const char *script_usage[] = {
2488 2489 2490 2491 2492 2493 2494
		"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
	};
2495

2496 2497
	setup_scripting();

2498
	argc = parse_options_subcommand(argc, argv, options, script_subcommands, script_usage,
2499 2500
			     PARSE_OPT_STOP_AT_NON_OPTION);

2501
	file.path = input_name;
2502
	file.force = symbol_conf.force;
2503

2504 2505 2506
	if (argc > 1 && !strncmp(argv[0], "rec", strlen("rec"))) {
		rec_script_path = get_script_path(argv[1], RECORD_SUFFIX);
		if (!rec_script_path)
2507
			return cmd_record(argc, argv);
2508 2509
	}

2510 2511 2512
	if (argc > 1 && !strncmp(argv[0], "rep", strlen("rep"))) {
		rep_script_path = get_script_path(argv[1], REPORT_SUFFIX);
		if (!rep_script_path) {
2513
			fprintf(stderr,
2514
				"Please specify a valid report script"
2515
				"(see 'perf script -l' for listing)\n");
2516 2517 2518 2519
			return -1;
		}
	}

2520 2521 2522 2523
	if (itrace_synth_opts.callchain &&
	    itrace_synth_opts.callchain_sz > scripting_max_stack)
		scripting_max_stack = itrace_synth_opts.callchain_sz;

2524
	/* make sure PERF_EXEC_PATH is set for scripts */
2525
	set_argv_exec_path(get_argv_exec_path());
2526

2527
	if (argc && !script_name && !rec_script_path && !rep_script_path) {
2528
		int live_pipe[2];
2529
		int rep_args;
2530 2531
		pid_t pid;

2532 2533 2534 2535
		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) {
2536 2537
			usage_with_options_msg(script_usage, options,
				"Couldn't find script `%s'\n\n See perf"
2538
				" script -l for available scripts.\n", argv[0]);
2539 2540
		}

2541 2542 2543 2544 2545 2546 2547 2548
		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) {
2549 2550
				usage_with_options_msg(script_usage, options,
					"`%s' script requires options."
2551
					"\n\n See perf script -l for available "
2552 2553
					"scripts and options.\n", argv[0]);
			}
2554 2555 2556 2557
		}

		if (pipe(live_pipe) < 0) {
			perror("failed to create pipe");
2558
			return -1;
2559 2560 2561 2562 2563
		}

		pid = fork();
		if (pid < 0) {
			perror("failed to fork");
2564
			return -1;
2565 2566 2567
		}

		if (!pid) {
2568 2569
			j = 0;

2570 2571 2572
			dup2(live_pipe[1], 1);
			close(live_pipe[0]);

2573 2574 2575
			if (is_top_script(argv[0])) {
				system_wide = true;
			} else if (!system_wide) {
2576 2577 2578 2579
				if (have_cmd(argc - rep_args, &argv[rep_args]) != 0) {
					err = -1;
					goto out;
				}
2580
			}
2581 2582

			__argv = malloc((argc + 6) * sizeof(const char *));
2583 2584 2585 2586 2587
			if (!__argv) {
				pr_err("malloc failed\n");
				err = -ENOMEM;
				goto out;
			}
2588

2589 2590 2591 2592 2593 2594 2595 2596 2597 2598
			__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;
2599 2600

			execvp("/bin/sh", (char **)__argv);
2601
			free(__argv);
2602 2603 2604 2605 2606 2607
			exit(-1);
		}

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

2608
		__argv = malloc((argc + 4) * sizeof(const char *));
2609 2610 2611 2612 2613 2614
		if (!__argv) {
			pr_err("malloc failed\n");
			err = -ENOMEM;
			goto out;
		}

2615 2616 2617 2618 2619 2620 2621 2622
		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;
2623 2624

		execvp("/bin/sh", (char **)__argv);
2625
		free(__argv);
2626 2627 2628
		exit(-1);
	}

2629 2630 2631 2632
	if (rec_script_path)
		script_path = rec_script_path;
	if (rep_script_path)
		script_path = rep_script_path;
2633

2634 2635
	if (script_path) {
		j = 0;
2636

2637 2638
		if (!rec_script_path)
			system_wide = false;
2639 2640 2641 2642 2643 2644
		else if (!system_wide) {
			if (have_cmd(argc - 1, &argv[1]) != 0) {
				err = -1;
				goto out;
			}
		}
2645

2646
		__argv = malloc((argc + 2) * sizeof(const char *));
2647 2648 2649 2650 2651 2652
		if (!__argv) {
			pr_err("malloc failed\n");
			err = -ENOMEM;
			goto out;
		}

2653 2654 2655 2656
		__argv[j++] = "/bin/sh";
		__argv[j++] = script_path;
		if (system_wide)
			__argv[j++] = "-a";
2657
		for (i = 2; i < argc; i++)
2658 2659
			__argv[j++] = argv[i];
		__argv[j++] = NULL;
2660 2661

		execvp("/bin/sh", (char **)__argv);
2662
		free(__argv);
2663 2664
		exit(-1);
	}
T
Tom Zanussi 已提交
2665

2666 2667
	if (!script_name)
		setup_pager();
F
Frederic Weisbecker 已提交
2668

2669
	session = perf_session__new(&file, false, &script.tool);
2670
	if (session == NULL)
2671
		return -1;
2672

2673 2674 2675
	if (header || header_only) {
		perf_session__fprintf_info(session, stdout, show_full_info);
		if (header_only)
2676
			goto out_delete;
2677 2678
	}

2679
	if (symbol__init(&session->header.env) < 0)
2680 2681
		goto out_delete;

2682
	script.session = session;
2683
	script__setup_sample_type(&script);
2684

2685 2686 2687
	if (output[PERF_TYPE_HARDWARE].fields & PERF_OUTPUT_CALLINDENT)
		itrace_synth_opts.thread_stack = true;

2688 2689
	session->itrace_synth_opts = &itrace_synth_opts;

2690
	if (cpu_list) {
2691 2692 2693
		err = perf_session__cpu_bitmap(session, cpu_list, cpu_bitmap);
		if (err < 0)
			goto out_delete;
2694 2695
	}

2696
	if (!no_callchain)
2697 2698 2699 2700
		symbol_conf.use_callchain = true;
	else
		symbol_conf.use_callchain = false;

2701 2702
	if (session->tevent.pevent &&
	    pevent_set_function_resolver(session->tevent.pevent,
2703 2704 2705 2706 2707 2708
					 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
2709 2710
	if (generate_script_lang) {
		struct stat perf_stat;
2711 2712
		int input;

2713
		if (output_set_by_user()) {
2714 2715
			fprintf(stderr,
				"custom fields not supported for generated scripts");
2716 2717
			err = -EINVAL;
			goto out_delete;
2718
		}
T
Tom Zanussi 已提交
2719

2720
		input = open(file.path, O_RDONLY);	/* input_name */
T
Tom Zanussi 已提交
2721
		if (input < 0) {
2722
			err = -errno;
T
Tom Zanussi 已提交
2723
			perror("failed to open file");
2724
			goto out_delete;
T
Tom Zanussi 已提交
2725 2726 2727 2728 2729
		}

		err = fstat(input, &perf_stat);
		if (err < 0) {
			perror("failed to stat file");
2730
			goto out_delete;
T
Tom Zanussi 已提交
2731 2732 2733 2734
		}

		if (!perf_stat.st_size) {
			fprintf(stderr, "zero-sized file, nothing to do!\n");
2735
			goto out_delete;
T
Tom Zanussi 已提交
2736 2737 2738 2739 2740
		}

		scripting_ops = script_spec__lookup(generate_script_lang);
		if (!scripting_ops) {
			fprintf(stderr, "invalid language specifier");
2741 2742
			err = -ENOENT;
			goto out_delete;
T
Tom Zanussi 已提交
2743 2744
		}

J
Jiri Olsa 已提交
2745
		err = scripting_ops->generate_script(session->tevent.pevent,
2746
						     "perf-script");
2747
		goto out_delete;
T
Tom Zanussi 已提交
2748 2749 2750
	}

	if (script_name) {
2751
		err = scripting_ops->start_script(script_name, argc, argv);
T
Tom Zanussi 已提交
2752
		if (err)
2753
			goto out_delete;
2754
		pr_debug("perf script started with script %s\n\n", script_name);
2755
		script_started = true;
T
Tom Zanussi 已提交
2756 2757
	}

2758 2759 2760

	err = perf_session__check_output_opt(session);
	if (err < 0)
2761
		goto out_delete;
2762

2763 2764 2765 2766 2767 2768
	/* needs to be parsed after looking up reference time */
	if (perf_time__parse_str(&script.ptime, script.time_str) != 0) {
		pr_err("Invalid time string\n");
		return -EINVAL;
	}

2769
	err = __cmd_script(&script);
T
Tom Zanussi 已提交
2770

2771 2772
	flush_scripting();

2773
out_delete:
2774
	perf_evlist__free_stats(session->evlist);
2775
	perf_session__delete(session);
2776 2777 2778

	if (script_started)
		cleanup_scripting();
T
Tom Zanussi 已提交
2779 2780
out:
	return err;
F
Frederic Weisbecker 已提交
2781
}