Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1404 insertions, 0 deletions

diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
new file mode 100644
index 000000000..05eae94d0
--- /dev/null
+++ b/tools/perf/builtin-report.c
@@ -0,0 +1,1404 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * builtin-report.c
+ *
+ * Builtin report command: Analyze the perf.data input file,
+ * look up and read DSOs and symbol information and display
+ * a histogram of results, along various sorting keys.
+ */
+#include "builtin.h"
+
+#include "util/util.h"
+#include "util/config.h"
+
+#include "util/annotate.h"
+#include "util/color.h"
+#include <linux/list.h>
+#include <linux/rbtree.h>
+#include <linux/err.h>
+#include "util/symbol.h"
+#include "util/callchain.h"
+#include "util/values.h"
+
+#include "perf.h"
+#include "util/debug.h"
+#include "util/evlist.h"
+#include "util/evsel.h"
+#include "util/header.h"
+#include "util/session.h"
+#include "util/tool.h"
+
+#include <subcmd/parse-options.h>
+#include <subcmd/exec-cmd.h>
+#include "util/parse-events.h"
+
+#include "util/thread.h"
+#include "util/sort.h"
+#include "util/hist.h"
+#include "util/data.h"
+#include "arch/common.h"
+#include "util/time-utils.h"
+#include "util/auxtrace.h"
+#include "util/units.h"
+#include "util/branch.h"
+
+#include <dlfcn.h>
+#include <errno.h>
+#include <inttypes.h>
+#include <regex.h>
+#include <signal.h>
+#include <linux/bitmap.h>
+#include <linux/stringify.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <linux/mman.h>
+
+struct report {
+	struct perf_tool	tool;
+	struct perf_session	*session;
+	bool			use_tui, use_gtk, use_stdio;
+	bool			show_full_info;
+	bool			show_threads;
+	bool			inverted_callchain;
+	bool			mem_mode;
+	bool			stats_mode;
+	bool			tasks_mode;
+	bool			mmaps_mode;
+	bool			header;
+	bool			header_only;
+	bool			nonany_branch_mode;
+	bool			group_set;
+	int			max_stack;
+	struct perf_read_values	show_threads_values;
+	struct annotation_options annotation_opts;
+	const char		*pretty_printing_style;
+	const char		*cpu_list;
+	const char		*symbol_filter_str;
+	const char		*time_str;
+	struct perf_time_interval *ptime_range;
+	int			range_size;
+	int			range_num;
+	float			min_percent;
+	u64			nr_entries;
+	u64			queue_size;
+	int			socket_filter;
+	DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
+	struct branch_type_stat	brtype_stat;
+};
+
+static int report__config(const char *var, const char *value, void *cb)
+{
+	struct report *rep = cb;
+
+	if (!strcmp(var, "report.group")) {
+		symbol_conf.event_group = perf_config_bool(var, value);
+		return 0;
+	}
+	if (!strcmp(var, "report.percent-limit")) {
+		double pcnt = strtof(value, NULL);
+
+		rep->min_percent = pcnt;
+		callchain_param.min_percent = pcnt;
+		return 0;
+	}
+	if (!strcmp(var, "report.children")) {
+		symbol_conf.cumulate_callchain = perf_config_bool(var, value);
+		return 0;
+	}
+	if (!strcmp(var, "report.queue-size"))
+		return perf_config_u64(&rep->queue_size, var, value);
+
+	if (!strcmp(var, "report.sort_order")) {
+		default_sort_order = strdup(value);
+		return 0;
+	}
+
+	return 0;
+}
+
+static int hist_iter__report_callback(struct hist_entry_iter *iter,
+				      struct addr_location *al, bool single,
+				      void *arg)
+{
+	int err = 0;
+	struct report *rep = arg;
+	struct hist_entry *he = iter->he;
+	struct perf_evsel *evsel = iter->evsel;
+	struct perf_sample *sample = iter->sample;
+	struct mem_info *mi;
+	struct branch_info *bi;
+
+	if (!ui__has_annotation())
+		return 0;
+
+	hist__account_cycles(sample->branch_stack, al, sample,
+			     rep->nonany_branch_mode);
+
+	if (sort__mode == SORT_MODE__BRANCH) {
+		bi = he->branch_info;
+		err = addr_map_symbol__inc_samples(&bi->from, sample, evsel);
+		if (err)
+			goto out;
+
+		err = addr_map_symbol__inc_samples(&bi->to, sample, evsel);
+
+	} else if (rep->mem_mode) {
+		mi = he->mem_info;
+		err = addr_map_symbol__inc_samples(&mi->daddr, sample, evsel);
+		if (err)
+			goto out;
+
+		err = hist_entry__inc_addr_samples(he, sample, evsel, al->addr);
+
+	} else if (symbol_conf.cumulate_callchain) {
+		if (single)
+			err = hist_entry__inc_addr_samples(he, sample, evsel, al->addr);
+	} else {
+		err = hist_entry__inc_addr_samples(he, sample, evsel, al->addr);
+	}
+
+out:
+	return err;
+}
+
+static int hist_iter__branch_callback(struct hist_entry_iter *iter,
+				      struct addr_location *al __maybe_unused,
+				      bool single __maybe_unused,
+				      void *arg)
+{
+	struct hist_entry *he = iter->he;
+	struct report *rep = arg;
+	struct branch_info *bi;
+	struct perf_sample *sample = iter->sample;
+	struct perf_evsel *evsel = iter->evsel;
+	int err;
+
+	if (!ui__has_annotation())
+		return 0;
+
+	hist__account_cycles(sample->branch_stack, al, sample,
+			     rep->nonany_branch_mode);
+
+	bi = he->branch_info;
+	err = addr_map_symbol__inc_samples(&bi->from, sample, evsel);
+	if (err)
+		goto out;
+
+	err = addr_map_symbol__inc_samples(&bi->to, sample, evsel);
+
+	branch_type_count(&rep->brtype_stat, &bi->flags,
+			  bi->from.addr, bi->to.addr);
+
+out:
+	return err;
+}
+
+static void setup_forced_leader(struct report *report,
+				struct perf_evlist *evlist)
+{
+	if (report->group_set)
+		perf_evlist__force_leader(evlist);
+}
+
+static int process_feature_event(struct perf_tool *tool,
+				 union perf_event *event,
+				 struct perf_session *session __maybe_unused)
+{
+	struct report *rep = container_of(tool, struct report, tool);
+
+	if (event->feat.feat_id < HEADER_LAST_FEATURE)
+		return perf_event__process_feature(tool, event, session);
+
+	if (event->feat.feat_id != HEADER_LAST_FEATURE) {
+		pr_err("failed: wrong feature ID: %" PRIu64 "\n",
+		       event->feat.feat_id);
+		return -1;
+	}
+
+	/*
+	 * (feat_id = HEADER_LAST_FEATURE) is the end marker which
+	 * means all features are received, now we can force the
+	 * group if needed.
+	 */
+	setup_forced_leader(rep, session->evlist);
+	return 0;
+}
+
+static int process_sample_event(struct perf_tool *tool,
+				union perf_event *event,
+				struct perf_sample *sample,
+				struct perf_evsel *evsel,
+				struct machine *machine)
+{
+	struct report *rep = container_of(tool, struct report, tool);
+	struct addr_location al;
+	struct hist_entry_iter iter = {
+		.evsel 			= evsel,
+		.sample 		= sample,
+		.hide_unresolved 	= symbol_conf.hide_unresolved,
+		.add_entry_cb 		= hist_iter__report_callback,
+	};
+	int ret = 0;
+
+	if (perf_time__ranges_skip_sample(rep->ptime_range, rep->range_num,
+					  sample->time)) {
+		return 0;
+	}
+
+	if (machine__resolve(machine, &al, sample) < 0) {
+		pr_debug("problem processing %d event, skipping it.\n",
+			 event->header.type);
+		return -1;
+	}
+
+	if (symbol_conf.hide_unresolved && al.sym == NULL)
+		goto out_put;
+
+	if (rep->cpu_list && !test_bit(sample->cpu, rep->cpu_bitmap))
+		goto out_put;
+
+	if (sort__mode == SORT_MODE__BRANCH) {
+		/*
+		 * A non-synthesized event might not have a branch stack if
+		 * branch stacks have been synthesized (using itrace options).
+		 */
+		if (!sample->branch_stack)
+			goto out_put;
+
+		iter.add_entry_cb = hist_iter__branch_callback;
+		iter.ops = &hist_iter_branch;
+	} else if (rep->mem_mode) {
+		iter.ops = &hist_iter_mem;
+	} else if (symbol_conf.cumulate_callchain) {
+		iter.ops = &hist_iter_cumulative;
+	} else {
+		iter.ops = &hist_iter_normal;
+	}
+
+	if (al.map != NULL)
+		al.map->dso->hit = 1;
+
+	ret = hist_entry_iter__add(&iter, &al, rep->max_stack, rep);
+	if (ret < 0)
+		pr_debug("problem adding hist entry, skipping event\n");
+out_put:
+	addr_location__put(&al);
+	return ret;
+}
+
+static int process_read_event(struct perf_tool *tool,
+			      union perf_event *event,
+			      struct perf_sample *sample __maybe_unused,
+			      struct perf_evsel *evsel,
+			      struct machine *machine __maybe_unused)
+{
+	struct report *rep = container_of(tool, struct report, tool);
+
+	if (rep->show_threads) {
+		const char *name = evsel ? perf_evsel__name(evsel) : "unknown";
+		int err = perf_read_values_add_value(&rep->show_threads_values,
+					   event->read.pid, event->read.tid,
+					   evsel->idx,
+					   name,
+					   event->read.value);
+
+		if (err)
+			return err;
+	}
+
+	return 0;
+}
+
+/* For pipe mode, sample_type is not currently set */
+static int report__setup_sample_type(struct report *rep)
+{
+	struct perf_session *session = rep->session;
+	u64 sample_type = perf_evlist__combined_sample_type(session->evlist);
+	bool is_pipe = perf_data__is_pipe(session->data);
+
+	if (session->itrace_synth_opts->callchain ||
+	    (!is_pipe &&
+	     perf_header__has_feat(&session->header, HEADER_AUXTRACE) &&
+	     !session->itrace_synth_opts->set))
+		sample_type |= PERF_SAMPLE_CALLCHAIN;
+
+	if (session->itrace_synth_opts->last_branch)
+		sample_type |= PERF_SAMPLE_BRANCH_STACK;
+
+	if (!is_pipe && !(sample_type & PERF_SAMPLE_CALLCHAIN)) {
+		if (perf_hpp_list.parent) {
+			ui__error("Selected --sort parent, but no "
+				    "callchain data. Did you call "
+				    "'perf record' without -g?\n");
+			return -EINVAL;
+		}
+		if (symbol_conf.use_callchain &&
+			!symbol_conf.show_branchflag_count) {
+			ui__error("Selected -g or --branch-history.\n"
+				  "But no callchain or branch data.\n"
+				  "Did you call 'perf record' without -g or -b?\n");
+			return -1;
+		}
+	} else if (!callchain_param.enabled &&
+		   callchain_param.mode != CHAIN_NONE &&
+		   !symbol_conf.use_callchain) {
+			symbol_conf.use_callchain = true;
+			if (callchain_register_param(&callchain_param) < 0) {
+				ui__error("Can't register callchain params.\n");
+				return -EINVAL;
+			}
+	}
+
+	if (symbol_conf.cumulate_callchain) {
+		/* Silently ignore if callchain is missing */
+		if (!(sample_type & PERF_SAMPLE_CALLCHAIN)) {
+			symbol_conf.cumulate_callchain = false;
+			perf_hpp__cancel_cumulate();
+		}
+	}
+
+	if (sort__mode == SORT_MODE__BRANCH) {
+		if (!is_pipe &&
+		    !(sample_type & PERF_SAMPLE_BRANCH_STACK)) {
+			ui__error("Selected -b but no branch data. "
+				  "Did you call perf record without -b?\n");
+			return -1;
+		}
+	}
+
+	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;
+			dwarf_callchain_users = true;
+		} else if (sample_type & PERF_SAMPLE_BRANCH_STACK)
+			callchain_param.record_mode = CALLCHAIN_LBR;
+		else
+			callchain_param.record_mode = CALLCHAIN_FP;
+	}
+
+	/* ??? handle more cases than just ANY? */
+	if (!(perf_evlist__combined_branch_type(session->evlist) &
+				PERF_SAMPLE_BRANCH_ANY))
+		rep->nonany_branch_mode = true;
+
+#if !defined(HAVE_LIBUNWIND_SUPPORT) && !defined(HAVE_DWARF_SUPPORT)
+	if (dwarf_callchain_users) {
+		ui__warning("Please install libunwind or libdw "
+			    "development packages during the perf build.\n");
+	}
+#endif
+
+	return 0;
+}
+
+static void sig_handler(int sig __maybe_unused)
+{
+	session_done = 1;
+}
+
+static size_t hists__fprintf_nr_sample_events(struct hists *hists, struct report *rep,
+					      const char *evname, FILE *fp)
+{
+	size_t ret;
+	char unit;
+	unsigned long nr_samples = hists->stats.nr_events[PERF_RECORD_SAMPLE];
+	u64 nr_events = hists->stats.total_period;
+	struct perf_evsel *evsel = hists_to_evsel(hists);
+	char buf[512];
+	size_t size = sizeof(buf);
+	int socked_id = hists->socket_filter;
+
+	if (quiet)
+		return 0;
+
+	if (symbol_conf.filter_relative) {
+		nr_samples = hists->stats.nr_non_filtered_samples;
+		nr_events = hists->stats.total_non_filtered_period;
+	}
+
+	if (perf_evsel__is_group_event(evsel)) {
+		struct perf_evsel *pos;
+
+		perf_evsel__group_desc(evsel, buf, size);
+		evname = buf;
+
+		for_each_group_member(pos, evsel) {
+			const struct hists *pos_hists = evsel__hists(pos);
+
+			if (symbol_conf.filter_relative) {
+				nr_samples += pos_hists->stats.nr_non_filtered_samples;
+				nr_events += pos_hists->stats.total_non_filtered_period;
+			} else {
+				nr_samples += pos_hists->stats.nr_events[PERF_RECORD_SAMPLE];
+				nr_events += pos_hists->stats.total_period;
+			}
+		}
+	}
+
+	nr_samples = convert_unit(nr_samples, &unit);
+	ret = fprintf(fp, "# Samples: %lu%c", nr_samples, unit);
+	if (evname != NULL) {
+		ret += fprintf(fp, " of event%s '%s'",
+			       evsel->nr_members > 1 ? "s" : "", evname);
+	}
+
+	if (rep->time_str)
+		ret += fprintf(fp, " (time slices: %s)", rep->time_str);
+
+	if (symbol_conf.show_ref_callgraph && evname && strstr(evname, "call-graph=no")) {
+		ret += fprintf(fp, ", show reference callgraph");
+	}
+
+	if (rep->mem_mode) {
+		ret += fprintf(fp, "\n# Total weight : %" PRIu64, nr_events);
+		ret += fprintf(fp, "\n# Sort order   : %s", sort_order ? : default_mem_sort_order);
+	} else
+		ret += fprintf(fp, "\n# Event count (approx.): %" PRIu64, nr_events);
+
+	if (socked_id > -1)
+		ret += fprintf(fp, "\n# Processor Socket: %d", socked_id);
+
+	return ret + fprintf(fp, "\n#\n");
+}
+
+static int perf_evlist__tty_browse_hists(struct perf_evlist *evlist,
+					 struct report *rep,
+					 const char *help)
+{
+	struct perf_evsel *pos;
+
+	if (!quiet) {
+		fprintf(stdout, "#\n# Total Lost Samples: %" PRIu64 "\n#\n",
+			evlist->stats.total_lost_samples);
+	}
+
+	evlist__for_each_entry(evlist, pos) {
+		struct hists *hists = evsel__hists(pos);
+		const char *evname = perf_evsel__name(pos);
+
+		if (symbol_conf.event_group &&
+		    !perf_evsel__is_group_leader(pos))
+			continue;
+
+		hists__fprintf_nr_sample_events(hists, rep, evname, stdout);
+		hists__fprintf(hists, !quiet, 0, 0, rep->min_percent, stdout,
+			       !(symbol_conf.use_callchain ||
+			         symbol_conf.show_branchflag_count));
+		fprintf(stdout, "\n\n");
+	}
+
+	if (!quiet)
+		fprintf(stdout, "#\n# (%s)\n#\n", help);
+
+	if (rep->show_threads) {
+		bool style = !strcmp(rep->pretty_printing_style, "raw");
+		perf_read_values_display(stdout, &rep->show_threads_values,
+					 style);
+		perf_read_values_destroy(&rep->show_threads_values);
+	}
+
+	if (sort__mode == SORT_MODE__BRANCH)
+		branch_type_stat_display(stdout, &rep->brtype_stat);
+
+	return 0;
+}
+
+static void report__warn_kptr_restrict(const struct report *rep)
+{
+	struct map *kernel_map = machine__kernel_map(&rep->session->machines.host);
+	struct kmap *kernel_kmap = kernel_map ? map__kmap(kernel_map) : NULL;
+
+	if (perf_evlist__exclude_kernel(rep->session->evlist))
+		return;
+
+	if (kernel_map == NULL ||
+	    (kernel_map->dso->hit &&
+	     (kernel_kmap->ref_reloc_sym == NULL ||
+	      kernel_kmap->ref_reloc_sym->addr == 0))) {
+		const char *desc =
+		    "As no suitable kallsyms nor vmlinux was found, kernel samples\n"
+		    "can't be resolved.";
+
+		if (kernel_map && map__has_symbols(kernel_map)) {
+			desc = "If some relocation was applied (e.g. "
+			       "kexec) symbols may be misresolved.";
+		}
+
+		ui__warning(
+"Kernel address maps (/proc/{kallsyms,modules}) were restricted.\n\n"
+"Check /proc/sys/kernel/kptr_restrict before running 'perf record'.\n\n%s\n\n"
+"Samples in kernel modules can't be resolved as well.\n\n",
+		desc);
+	}
+}
+
+static int report__gtk_browse_hists(struct report *rep, const char *help)
+{
+	int (*hist_browser)(struct perf_evlist *evlist, const char *help,
+			    struct hist_browser_timer *timer, float min_pcnt);
+
+	hist_browser = dlsym(perf_gtk_handle, "perf_evlist__gtk_browse_hists");
+
+	if (hist_browser == NULL) {
+		ui__error("GTK browser not found!\n");
+		return -1;
+	}
+
+	return hist_browser(rep->session->evlist, help, NULL, rep->min_percent);
+}
+
+static int report__browse_hists(struct report *rep)
+{
+	int ret;
+	struct perf_session *session = rep->session;
+	struct perf_evlist *evlist = session->evlist;
+	const char *help = perf_tip(system_path(TIPDIR));
+
+	if (help == NULL) {
+		/* fallback for people who don't install perf ;-) */
+		help = perf_tip(DOCDIR);
+		if (help == NULL)
+			help = "Cannot load tips.txt file, please install perf!";
+	}
+
+	switch (use_browser) {
+	case 1:
+		ret = perf_evlist__tui_browse_hists(evlist, help, NULL,
+						    rep->min_percent,
+						    &session->header.env,
+						    true, &rep->annotation_opts);
+		/*
+		 * Usually "ret" is the last pressed key, and we only
+		 * care if the key notifies us to switch data file.
+		 */
+		if (ret != K_SWITCH_INPUT_DATA)
+			ret = 0;
+		break;
+	case 2:
+		ret = report__gtk_browse_hists(rep, help);
+		break;
+	default:
+		ret = perf_evlist__tty_browse_hists(evlist, rep, help);
+		break;
+	}
+
+	return ret;
+}
+
+static int report__collapse_hists(struct report *rep)
+{
+	struct ui_progress prog;
+	struct perf_evsel *pos;
+	int ret = 0;
+
+	ui_progress__init(&prog, rep->nr_entries, "Merging related events...");
+
+	evlist__for_each_entry(rep->session->evlist, pos) {
+		struct hists *hists = evsel__hists(pos);
+
+		if (pos->idx == 0)
+			hists->symbol_filter_str = rep->symbol_filter_str;
+
+		hists->socket_filter = rep->socket_filter;
+
+		ret = hists__collapse_resort(hists, &prog);
+		if (ret < 0)
+			break;
+
+		/* Non-group events are considered as leader */
+		if (symbol_conf.event_group &&
+		    !perf_evsel__is_group_leader(pos)) {
+			struct hists *leader_hists = evsel__hists(pos->leader);
+
+			hists__match(leader_hists, hists);
+			hists__link(leader_hists, hists);
+		}
+	}
+
+	ui_progress__finish();
+	return ret;
+}
+
+static void report__output_resort(struct report *rep)
+{
+	struct ui_progress prog;
+	struct perf_evsel *pos;
+
+	ui_progress__init(&prog, rep->nr_entries, "Sorting events for output...");
+
+	evlist__for_each_entry(rep->session->evlist, pos)
+		perf_evsel__output_resort(pos, &prog);
+
+	ui_progress__finish();
+}
+
+static void stats_setup(struct report *rep)
+{
+	memset(&rep->tool, 0, sizeof(rep->tool));
+	rep->tool.no_warn = true;
+}
+
+static int stats_print(struct report *rep)
+{
+	struct perf_session *session = rep->session;
+
+	perf_session__fprintf_nr_events(session, stdout);
+	return 0;
+}
+
+static void tasks_setup(struct report *rep)
+{
+	memset(&rep->tool, 0, sizeof(rep->tool));
+	rep->tool.ordered_events = true;
+	if (rep->mmaps_mode) {
+		rep->tool.mmap = perf_event__process_mmap;
+		rep->tool.mmap2 = perf_event__process_mmap2;
+	}
+	rep->tool.comm = perf_event__process_comm;
+	rep->tool.exit = perf_event__process_exit;
+	rep->tool.fork = perf_event__process_fork;
+	rep->tool.no_warn = true;
+}
+
+struct task {
+	struct thread		*thread;
+	struct list_head	 list;
+	struct list_head	 children;
+};
+
+static struct task *tasks_list(struct task *task, struct machine *machine)
+{
+	struct thread *parent_thread, *thread = task->thread;
+	struct task   *parent_task;
+
+	/* Already listed. */
+	if (!list_empty(&task->list))
+		return NULL;
+
+	/* Last one in the chain. */
+	if (thread->ppid == -1)
+		return task;
+
+	parent_thread = machine__find_thread(machine, -1, thread->ppid);
+	if (!parent_thread)
+		return ERR_PTR(-ENOENT);
+
+	parent_task = thread__priv(parent_thread);
+	list_add_tail(&task->list, &parent_task->children);
+	return tasks_list(parent_task, machine);
+}
+
+static size_t maps__fprintf_task(struct maps *maps, int indent, FILE *fp)
+{
+	size_t printed = 0;
+	struct rb_node *nd;
+
+	for (nd = rb_first(&maps->entries); nd; nd = rb_next(nd)) {
+		struct map *map = rb_entry(nd, struct map, rb_node);
+
+		printed += fprintf(fp, "%*s  %" PRIx64 "-%" PRIx64 " %c%c%c%c %08" PRIx64 " %" PRIu64 " %s\n",
+				   indent, "", map->start, map->end,
+				   map->prot & PROT_READ ? 'r' : '-',
+				   map->prot & PROT_WRITE ? 'w' : '-',
+				   map->prot & PROT_EXEC ? 'x' : '-',
+				   map->flags & MAP_SHARED ? 's' : 'p',
+				   map->pgoff,
+				   map->ino, map->dso->name);
+	}
+
+	return printed;
+}
+
+static int map_groups__fprintf_task(struct map_groups *mg, int indent, FILE *fp)
+{
+	return maps__fprintf_task(&mg->maps, indent, fp);
+}
+
+static void task__print_level(struct task *task, FILE *fp, int level)
+{
+	struct thread *thread = task->thread;
+	struct task *child;
+	int comm_indent = fprintf(fp, "  %8d %8d %8d |%*s",
+				  thread->pid_, thread->tid, thread->ppid,
+				  level, "");
+
+	fprintf(fp, "%s\n", thread__comm_str(thread));
+
+	map_groups__fprintf_task(thread->mg, comm_indent, fp);
+
+	if (!list_empty(&task->children)) {
+		list_for_each_entry(child, &task->children, list)
+			task__print_level(child, fp, level + 1);
+	}
+}
+
+static int tasks_print(struct report *rep, FILE *fp)
+{
+	struct perf_session *session = rep->session;
+	struct machine      *machine = &session->machines.host;
+	struct task *tasks, *task;
+	unsigned int nr = 0, itask = 0, i;
+	struct rb_node *nd;
+	LIST_HEAD(list);
+
+	/*
+	 * No locking needed while accessing machine->threads,
+	 * because --tasks is single threaded command.
+	 */
+
+	/* Count all the threads. */
+	for (i = 0; i < THREADS__TABLE_SIZE; i++)
+		nr += machine->threads[i].nr;
+
+	tasks = malloc(sizeof(*tasks) * nr);
+	if (!tasks)
+		return -ENOMEM;
+
+	for (i = 0; i < THREADS__TABLE_SIZE; i++) {
+		struct threads *threads = &machine->threads[i];
+
+		for (nd = rb_first(&threads->entries); nd; nd = rb_next(nd)) {
+			task = tasks + itask++;
+
+			task->thread = rb_entry(nd, struct thread, rb_node);
+			INIT_LIST_HEAD(&task->children);
+			INIT_LIST_HEAD(&task->list);
+			thread__set_priv(task->thread, task);
+		}
+	}
+
+	/*
+	 * Iterate every task down to the unprocessed parent
+	 * and link all in task children list. Task with no
+	 * parent is added into 'list'.
+	 */
+	for (itask = 0; itask < nr; itask++) {
+		task = tasks + itask;
+
+		if (!list_empty(&task->list))
+			continue;
+
+		task = tasks_list(task, machine);
+		if (IS_ERR(task)) {
+			pr_err("Error: failed to process tasks\n");
+			free(tasks);
+			return PTR_ERR(task);
+		}
+
+		if (task)
+			list_add_tail(&task->list, &list);
+	}
+
+	fprintf(fp, "# %8s %8s %8s  %s\n", "pid", "tid", "ppid", "comm");
+
+	list_for_each_entry(task, &list, list)
+		task__print_level(task, fp, 0);
+
+	free(tasks);
+	return 0;
+}
+
+static int __cmd_report(struct report *rep)
+{
+	int ret;
+	struct perf_session *session = rep->session;
+	struct perf_evsel *pos;
+	struct perf_data *data = session->data;
+
+	signal(SIGINT, sig_handler);
+
+	if (rep->cpu_list) {
+		ret = perf_session__cpu_bitmap(session, rep->cpu_list,
+					       rep->cpu_bitmap);
+		if (ret) {
+			ui__error("failed to set cpu bitmap\n");
+			return ret;
+		}
+		session->itrace_synth_opts->cpu_bitmap = rep->cpu_bitmap;
+	}
+
+	if (rep->show_threads) {
+		ret = perf_read_values_init(&rep->show_threads_values);
+		if (ret)
+			return ret;
+	}
+
+	ret = report__setup_sample_type(rep);
+	if (ret) {
+		/* report__setup_sample_type() already showed error message */
+		return ret;
+	}
+
+	if (rep->stats_mode)
+		stats_setup(rep);
+
+	if (rep->tasks_mode)
+		tasks_setup(rep);
+
+	ret = perf_session__process_events(session);
+	if (ret) {
+		ui__error("failed to process sample\n");
+		return ret;
+	}
+
+	if (rep->stats_mode)
+		return stats_print(rep);
+
+	if (rep->tasks_mode)
+		return tasks_print(rep, stdout);
+
+	report__warn_kptr_restrict(rep);
+
+	evlist__for_each_entry(session->evlist, pos)
+		rep->nr_entries += evsel__hists(pos)->nr_entries;
+
+	if (use_browser == 0) {
+		if (verbose > 3)
+			perf_session__fprintf(session, stdout);
+
+		if (verbose > 2)
+			perf_session__fprintf_dsos(session, stdout);
+
+		if (dump_trace) {
+			perf_session__fprintf_nr_events(session, stdout);
+			perf_evlist__fprintf_nr_events(session->evlist, stdout);
+			return 0;
+		}
+	}
+
+	ret = report__collapse_hists(rep);
+	if (ret) {
+		ui__error("failed to process hist entry\n");
+		return ret;
+	}
+
+	if (session_done())
+		return 0;
+
+	/*
+	 * recalculate number of entries after collapsing since it
+	 * might be changed during the collapse phase.
+	 */
+	rep->nr_entries = 0;
+	evlist__for_each_entry(session->evlist, pos)
+		rep->nr_entries += evsel__hists(pos)->nr_entries;
+
+	if (rep->nr_entries == 0) {
+		ui__error("The %s file has no samples!\n", data->file.path);
+		return 0;
+	}
+
+	report__output_resort(rep);
+
+	return report__browse_hists(rep);
+}
+
+static int
+report_parse_callchain_opt(const struct option *opt, const char *arg, int unset)
+{
+	struct callchain_param *callchain = opt->value;
+
+	callchain->enabled = !unset;
+	/*
+	 * --no-call-graph
+	 */
+	if (unset) {
+		symbol_conf.use_callchain = false;
+		callchain->mode = CHAIN_NONE;
+		return 0;
+	}
+
+	return parse_callchain_report_opt(arg);
+}
+
+int
+report_parse_ignore_callees_opt(const struct option *opt __maybe_unused,
+				const char *arg, int unset __maybe_unused)
+{
+	if (arg) {
+		int err = regcomp(&ignore_callees_regex, arg, REG_EXTENDED);
+		if (err) {
+			char buf[BUFSIZ];
+			regerror(err, &ignore_callees_regex, buf, sizeof(buf));
+			pr_err("Invalid --ignore-callees regex: %s\n%s", arg, buf);
+			return -1;
+		}
+		have_ignore_callees = 1;
+	}
+
+	return 0;
+}
+
+static int
+parse_branch_mode(const struct option *opt,
+		  const char *str __maybe_unused, int unset)
+{
+	int *branch_mode = opt->value;
+
+	*branch_mode = !unset;
+	return 0;
+}
+
+static int
+parse_percent_limit(const struct option *opt, const char *str,
+		    int unset __maybe_unused)
+{
+	struct report *rep = opt->value;
+	double pcnt = strtof(str, NULL);
+
+	rep->min_percent = pcnt;
+	callchain_param.min_percent = pcnt;
+	return 0;
+}
+
+int cmd_report(int argc, const char **argv)
+{
+	struct perf_session *session;
+	struct itrace_synth_opts itrace_synth_opts = { .set = 0, };
+	struct stat st;
+	bool has_br_stack = false;
+	int branch_mode = -1;
+	int last_key = 0;
+	bool branch_call_mode = false;
+#define CALLCHAIN_DEFAULT_OPT  "graph,0.5,caller,function,percent"
+	const char report_callchain_help[] = "Display call graph (stack chain/backtrace):\n\n"
+					     CALLCHAIN_REPORT_HELP
+					     "\n\t\t\t\tDefault: " CALLCHAIN_DEFAULT_OPT;
+	char callchain_default_opt[] = CALLCHAIN_DEFAULT_OPT;
+	const char * const report_usage[] = {
+		"perf report [<options>]",
+		NULL
+	};
+	struct report report = {
+		.tool = {
+			.sample		 = process_sample_event,
+			.mmap		 = perf_event__process_mmap,
+			.mmap2		 = perf_event__process_mmap2,
+			.comm		 = perf_event__process_comm,
+			.namespaces	 = perf_event__process_namespaces,
+			.exit		 = perf_event__process_exit,
+			.fork		 = perf_event__process_fork,
+			.lost		 = perf_event__process_lost,
+			.read		 = process_read_event,
+			.attr		 = perf_event__process_attr,
+			.tracing_data	 = perf_event__process_tracing_data,
+			.build_id	 = perf_event__process_build_id,
+			.id_index	 = perf_event__process_id_index,
+			.auxtrace_info	 = perf_event__process_auxtrace_info,
+			.auxtrace	 = perf_event__process_auxtrace,
+			.event_update	 = perf_event__process_event_update,
+			.feature	 = process_feature_event,
+			.ordered_events	 = true,
+			.ordering_requires_timestamps = true,
+		},
+		.max_stack		 = PERF_MAX_STACK_DEPTH,
+		.pretty_printing_style	 = "normal",
+		.socket_filter		 = -1,
+		.annotation_opts	 = annotation__default_options,
+	};
+	const struct option options[] = {
+	OPT_STRING('i', "input", &input_name, "file",
+		    "input file name"),
+	OPT_INCR('v', "verbose", &verbose,
+		    "be more verbose (show symbol address, etc)"),
+	OPT_BOOLEAN('q', "quiet", &quiet, "Do not show any message"),
+	OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
+		    "dump raw trace in ASCII"),
+	OPT_BOOLEAN(0, "stats", &report.stats_mode, "Display event stats"),
+	OPT_BOOLEAN(0, "tasks", &report.tasks_mode, "Display recorded tasks"),
+	OPT_BOOLEAN(0, "mmaps", &report.mmaps_mode, "Display recorded tasks memory maps"),
+	OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
+		   "file", "vmlinux pathname"),
+	OPT_BOOLEAN(0, "ignore-vmlinux", &symbol_conf.ignore_vmlinux,
+                    "don't load vmlinux even if found"),
+	OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name,
+		   "file", "kallsyms pathname"),
+	OPT_BOOLEAN('f', "force", &symbol_conf.force, "don't complain, do it"),
+	OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules,
+		    "load module symbols - WARNING: use only with -k and LIVE kernel"),
+	OPT_BOOLEAN('n', "show-nr-samples", &symbol_conf.show_nr_samples,
+		    "Show a column with the number of samples"),
+	OPT_BOOLEAN('T', "threads", &report.show_threads,
+		    "Show per-thread event counters"),
+	OPT_STRING(0, "pretty", &report.pretty_printing_style, "key",
+		   "pretty printing style key: normal raw"),
+	OPT_BOOLEAN(0, "tui", &report.use_tui, "Use the TUI interface"),
+	OPT_BOOLEAN(0, "gtk", &report.use_gtk, "Use the GTK2 interface"),
+	OPT_BOOLEAN(0, "stdio", &report.use_stdio,
+		    "Use the stdio interface"),
+	OPT_BOOLEAN(0, "header", &report.header, "Show data header."),
+	OPT_BOOLEAN(0, "header-only", &report.header_only,
+		    "Show only data header."),
+	OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
+		   "sort by key(s): pid, comm, dso, symbol, parent, cpu, srcline, ..."
+		   " Please refer the man page for the complete list."),
+	OPT_STRING('F', "fields", &field_order, "key[,keys...]",
+		   "output field(s): overhead, period, sample plus all of sort keys"),
+	OPT_BOOLEAN(0, "show-cpu-utilization", &symbol_conf.show_cpu_utilization,
+		    "Show sample percentage for different cpu modes"),
+	OPT_BOOLEAN_FLAG(0, "showcpuutilization", &symbol_conf.show_cpu_utilization,
+		    "Show sample percentage for different cpu modes", PARSE_OPT_HIDDEN),
+	OPT_STRING('p', "parent", &parent_pattern, "regex",
+		   "regex filter to identify parent, see: '--sort parent'"),
+	OPT_BOOLEAN('x', "exclude-other", &symbol_conf.exclude_other,
+		    "Only display entries with parent-match"),
+	OPT_CALLBACK_DEFAULT('g', "call-graph", &callchain_param,
+			     "print_type,threshold[,print_limit],order,sort_key[,branch],value",
+			     report_callchain_help, &report_parse_callchain_opt,
+			     callchain_default_opt),
+	OPT_BOOLEAN(0, "children", &symbol_conf.cumulate_callchain,
+		    "Accumulate callchains of children and show total overhead as well"),
+	OPT_INTEGER(0, "max-stack", &report.max_stack,
+		    "Set the maximum stack depth when parsing the callchain, "
+		    "anything beyond the specified depth will be ignored. "
+		    "Default: kernel.perf_event_max_stack or " __stringify(PERF_MAX_STACK_DEPTH)),
+	OPT_BOOLEAN('G', "inverted", &report.inverted_callchain,
+		    "alias for inverted call graph"),
+	OPT_CALLBACK(0, "ignore-callees", NULL, "regex",
+		   "ignore callees of these functions in call graphs",
+		   report_parse_ignore_callees_opt),
+	OPT_STRING('d', "dsos", &symbol_conf.dso_list_str, "dso[,dso...]",
+		   "only consider symbols in these dsos"),
+	OPT_STRING('c', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
+		   "only consider symbols in these comms"),
+	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"),
+	OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
+		   "only consider these symbols"),
+	OPT_STRING(0, "symbol-filter", &report.symbol_filter_str, "filter",
+		   "only show symbols that (partially) match with this filter"),
+	OPT_STRING('w', "column-widths", &symbol_conf.col_width_list_str,
+		   "width[,width...]",
+		   "don't try to adjust column width, use these fixed values"),
+	OPT_STRING_NOEMPTY('t', "field-separator", &symbol_conf.field_sep, "separator",
+		   "separator for columns, no spaces will be added between "
+		   "columns '.' is reserved."),
+	OPT_BOOLEAN('U', "hide-unresolved", &symbol_conf.hide_unresolved,
+		    "Only display entries resolved to a symbol"),
+	OPT_CALLBACK(0, "symfs", NULL, "directory",
+		     "Look for files with symbols relative to this directory",
+		     symbol__config_symfs),
+	OPT_STRING('C', "cpu", &report.cpu_list, "cpu",
+		   "list of cpus to profile"),
+	OPT_BOOLEAN('I', "show-info", &report.show_full_info,
+		    "Display extended information about perf.data file"),
+	OPT_BOOLEAN(0, "source", &report.annotation_opts.annotate_src,
+		    "Interleave source code with assembly code (default)"),
+	OPT_BOOLEAN(0, "asm-raw", &report.annotation_opts.show_asm_raw,
+		    "Display raw encoding of assembly instructions (default)"),
+	OPT_STRING('M', "disassembler-style", &report.annotation_opts.disassembler_style, "disassembler style",
+		   "Specify disassembler style (e.g. -M intel for intel syntax)"),
+	OPT_BOOLEAN(0, "show-total-period", &symbol_conf.show_total_period,
+		    "Show a column with the sum of periods"),
+	OPT_BOOLEAN_SET(0, "group", &symbol_conf.event_group, &report.group_set,
+		    "Show event group information together"),
+	OPT_CALLBACK_NOOPT('b', "branch-stack", &branch_mode, "",
+		    "use branch records for per branch histogram filling",
+		    parse_branch_mode),
+	OPT_BOOLEAN(0, "branch-history", &branch_call_mode,
+		    "add last branch records to call history"),
+	OPT_STRING(0, "objdump", &report.annotation_opts.objdump_path, "path",
+		   "objdump binary to use for disassembly and annotations"),
+	OPT_BOOLEAN(0, "demangle", &symbol_conf.demangle,
+		    "Disable symbol demangling"),
+	OPT_BOOLEAN(0, "demangle-kernel", &symbol_conf.demangle_kernel,
+		    "Enable kernel symbol demangling"),
+	OPT_BOOLEAN(0, "mem-mode", &report.mem_mode, "mem access profile"),
+	OPT_CALLBACK(0, "percent-limit", &report, "percent",
+		     "Don't show entries under that percent", parse_percent_limit),
+	OPT_CALLBACK(0, "percentage", NULL, "relative|absolute",
+		     "how to display percentage of filtered entries", parse_filter_percentage),
+	OPT_CALLBACK_OPTARG(0, "itrace", &itrace_synth_opts, NULL, "opts",
+			    "Instruction Tracing options",
+			    itrace_parse_synth_opts),
+	OPT_BOOLEAN(0, "full-source-path", &srcline_full_filename,
+			"Show full source file name path for source lines"),
+	OPT_BOOLEAN(0, "show-ref-call-graph", &symbol_conf.show_ref_callgraph,
+		    "Show callgraph from reference event"),
+	OPT_INTEGER(0, "socket-filter", &report.socket_filter,
+		    "only show processor socket that match with this filter"),
+	OPT_BOOLEAN(0, "raw-trace", &symbol_conf.raw_trace,
+		    "Show raw trace event output (do not use print fmt or plugins)"),
+	OPT_BOOLEAN(0, "hierarchy", &symbol_conf.report_hierarchy,
+		    "Show entries in a hierarchy"),
+	OPT_CALLBACK_DEFAULT(0, "stdio-color", NULL, "mode",
+			     "'always' (default), 'never' or 'auto' only applicable to --stdio mode",
+			     stdio__config_color, "always"),
+	OPT_STRING(0, "time", &report.time_str, "str",
+		   "Time span of interest (start,stop)"),
+	OPT_BOOLEAN(0, "inline", &symbol_conf.inline_name,
+		    "Show inline function"),
+	OPT_CALLBACK(0, "percent-type", &report.annotation_opts, "local-period",
+		     "Set percent type local/global-period/hits",
+		     annotate_parse_percent_type),
+	OPT_END()
+	};
+	struct perf_data data = {
+		.mode  = PERF_DATA_MODE_READ,
+	};
+	int ret = hists__init();
+
+	if (ret < 0)
+		return ret;
+
+	ret = perf_config(report__config, &report);
+	if (ret)
+		return ret;
+
+	argc = parse_options(argc, argv, options, report_usage, 0);
+	if (argc) {
+		/*
+		 * Special case: if there's an argument left then assume that
+		 * it's a symbol filter:
+		 */
+		if (argc > 1)
+			usage_with_options(report_usage, options);
+
+		report.symbol_filter_str = argv[0];
+	}
+
+	if (report.mmaps_mode)
+		report.tasks_mode = true;
+
+	if (quiet)
+		perf_quiet_option();
+
+	if (symbol_conf.vmlinux_name &&
+	    access(symbol_conf.vmlinux_name, R_OK)) {
+		pr_err("Invalid file: %s\n", symbol_conf.vmlinux_name);
+		return -EINVAL;
+	}
+	if (symbol_conf.kallsyms_name &&
+	    access(symbol_conf.kallsyms_name, R_OK)) {
+		pr_err("Invalid file: %s\n", symbol_conf.kallsyms_name);
+		return -EINVAL;
+	}
+
+	if (report.inverted_callchain)
+		callchain_param.order = ORDER_CALLER;
+	if (symbol_conf.cumulate_callchain && !callchain_param.order_set)
+		callchain_param.order = ORDER_CALLER;
+
+	if (itrace_synth_opts.callchain &&
+	    (int)itrace_synth_opts.callchain_sz > report.max_stack)
+		report.max_stack = itrace_synth_opts.callchain_sz;
+
+	if (!input_name || !strlen(input_name)) {
+		if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))
+			input_name = "-";
+		else
+			input_name = "perf.data";
+	}
+
+	data.file.path = input_name;
+	data.force     = symbol_conf.force;
+
+repeat:
+	session = perf_session__new(&data, false, &report.tool);
+	if (session == NULL)
+		return -1;
+
+	if (report.queue_size) {
+		ordered_events__set_alloc_size(&session->ordered_events,
+					       report.queue_size);
+	}
+
+	session->itrace_synth_opts = &itrace_synth_opts;
+
+	report.session = session;
+
+	has_br_stack = perf_header__has_feat(&session->header,
+					     HEADER_BRANCH_STACK);
+
+	setup_forced_leader(&report, session->evlist);
+
+	if (itrace_synth_opts.last_branch)
+		has_br_stack = true;
+
+	if (has_br_stack && branch_call_mode)
+		symbol_conf.show_branchflag_count = true;
+
+	memset(&report.brtype_stat, 0, sizeof(struct branch_type_stat));
+
+	/*
+	 * Branch mode is a tristate:
+	 * -1 means default, so decide based on the file having branch data.
+	 * 0/1 means the user chose a mode.
+	 */
+	if (((branch_mode == -1 && has_br_stack) || branch_mode == 1) &&
+	    !branch_call_mode) {
+		sort__mode = SORT_MODE__BRANCH;
+		symbol_conf.cumulate_callchain = false;
+	}
+	if (branch_call_mode) {
+		callchain_param.key = CCKEY_ADDRESS;
+		callchain_param.branch_callstack = 1;
+		symbol_conf.use_callchain = true;
+		callchain_register_param(&callchain_param);
+		if (sort_order == NULL)
+			sort_order = "srcline,symbol,dso";
+	}
+
+	if (report.mem_mode) {
+		if (sort__mode == SORT_MODE__BRANCH) {
+			pr_err("branch and mem mode incompatible\n");
+			goto error;
+		}
+		sort__mode = SORT_MODE__MEMORY;
+		symbol_conf.cumulate_callchain = false;
+	}
+
+	if (symbol_conf.report_hierarchy) {
+		/* disable incompatible options */
+		symbol_conf.cumulate_callchain = false;
+
+		if (field_order) {
+			pr_err("Error: --hierarchy and --fields options cannot be used together\n");
+			parse_options_usage(report_usage, options, "F", 1);
+			parse_options_usage(NULL, options, "hierarchy", 0);
+			goto error;
+		}
+
+		perf_hpp_list.need_collapse = true;
+	}
+
+	if (report.use_stdio)
+		use_browser = 0;
+	else if (report.use_tui)
+		use_browser = 1;
+	else if (report.use_gtk)
+		use_browser = 2;
+
+	/* Force tty output for header output and per-thread stat. */
+	if (report.header || report.header_only || report.show_threads)
+		use_browser = 0;
+	if (report.header || report.header_only)
+		report.tool.show_feat_hdr = SHOW_FEAT_HEADER;
+	if (report.show_full_info)
+		report.tool.show_feat_hdr = SHOW_FEAT_HEADER_FULL_INFO;
+	if (report.stats_mode || report.tasks_mode)
+		use_browser = 0;
+	if (report.stats_mode && report.tasks_mode) {
+		pr_err("Error: --tasks and --mmaps can't be used together with --stats\n");
+		goto error;
+	}
+
+	if (strcmp(input_name, "-") != 0)
+		setup_browser(true);
+	else
+		use_browser = 0;
+
+	if ((last_key != K_SWITCH_INPUT_DATA) &&
+	    (setup_sorting(session->evlist) < 0)) {
+		if (sort_order)
+			parse_options_usage(report_usage, options, "s", 1);
+		if (field_order)
+			parse_options_usage(sort_order ? NULL : report_usage,
+					    options, "F", 1);
+		goto error;
+	}
+
+	if ((report.header || report.header_only) && !quiet) {
+		perf_session__fprintf_info(session, stdout,
+					   report.show_full_info);
+		if (report.header_only) {
+			ret = 0;
+			goto error;
+		}
+	} else if (use_browser == 0 && !quiet &&
+		   !report.stats_mode && !report.tasks_mode) {
+		fputs("# To display the perf.data header info, please use --header/--header-only options.\n#\n",
+		      stdout);
+	}
+
+	/*
+	 * Only in the TUI browser we are doing integrated annotation,
+	 * so don't allocate extra space that won't be used in the stdio
+	 * implementation.
+	 */
+	if (ui__has_annotation()) {
+		ret = symbol__annotation_init();
+		if (ret < 0)
+			goto error;
+		/*
+ 		 * For searching by name on the "Browse map details".
+ 		 * providing it only in verbose mode not to bloat too
+ 		 * much struct symbol.
+ 		 */
+		if (verbose > 0) {
+			/*
+			 * XXX: Need to provide a less kludgy way to ask for
+			 * more space per symbol, the u32 is for the index on
+			 * the ui browser.
+			 * See symbol__browser_index.
+			 */
+			symbol_conf.priv_size += sizeof(u32);
+			symbol_conf.sort_by_name = true;
+		}
+		annotation_config__init();
+	}
+
+	if (symbol__init(&session->header.env) < 0)
+		goto error;
+
+	report.ptime_range = perf_time__range_alloc(report.time_str,
+						    &report.range_size);
+	if (!report.ptime_range) {
+		ret = -ENOMEM;
+		goto error;
+	}
+
+	if (perf_time__parse_str(report.ptime_range, report.time_str) != 0) {
+		if (session->evlist->first_sample_time == 0 &&
+		    session->evlist->last_sample_time == 0) {
+			pr_err("HINT: no first/last sample time found in perf data.\n"
+			       "Please use latest perf binary to execute 'perf record'\n"
+			       "(if '--buildid-all' is enabled, please set '--timestamp-boundary').\n");
+			ret = -EINVAL;
+			goto error;
+		}
+
+		report.range_num = perf_time__percent_parse_str(
+					report.ptime_range, report.range_size,
+					report.time_str,
+					session->evlist->first_sample_time,
+					session->evlist->last_sample_time);
+
+		if (report.range_num < 0) {
+			pr_err("Invalid time string\n");
+			ret = -EINVAL;
+			goto error;
+		}
+	} else {
+		report.range_num = 1;
+	}
+
+	if (session->tevent.pevent &&
+	    tep_set_function_resolver(session->tevent.pevent,
+				      machine__resolve_kernel_addr,
+				      &session->machines.host) < 0) {
+		pr_err("%s: failed to set libtraceevent function resolver\n",
+		       __func__);
+		return -1;
+	}
+
+	sort__setup_elide(stdout);
+
+	ret = __cmd_report(&report);
+	if (ret == K_SWITCH_INPUT_DATA) {
+		perf_session__delete(session);
+		last_key = K_SWITCH_INPUT_DATA;
+		goto repeat;
+	} else
+		ret = 0;
+
+error:
+	zfree(&report.ptime_range);
+
+	perf_session__delete(session);
+	return ret;
+}