Merge tag 'ipe-pr-20260925' of git://git.kernel.org/pub/scm/linux/kernel/git/wufan/ipegrafted

Pull IPE fixes from Fan Wu:
 "Two fixes for use-after-free issues found by recent LLM-assisted code
  analysis.

   - move successful policy load auditing under the new policy
     directory's inode lock, preventing a concurrent policy deletion
     from freeing the policy while it is still being audited

   - protect the dm-verity root hash with RCU, preventing policy
     evaluation from racing with root hash replacement during preresume"

* tag 'ipe-pr-20260925' of git://git.kernel.org/pub/scm/linux/kernel/git/wufan/ipe:
  ipe: protect the dm-verity root hash with RCU
  ipe: fix use-after-free when auditing a newly loaded policy

1 files changed, 1923 insertions, 0 deletions

diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
new file mode 100644
index 000000000..60d1f1666
--- /dev/null
+++ b/tools/perf/builtin-report.c
@@ -0,0 +1,1923 @@
+// 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/config.h"
+
+#include "util/annotate.h"
+#include "util/color.h"
+#include "util/dso.h"
+#include <linux/list.h>
+#include <linux/rbtree.h>
+#include <linux/err.h>
+#include <linux/zalloc.h>
+#include "util/map.h"
+#include "util/symbol.h"
+#include "util/map_symbol.h"
+#include "util/mem-events.h"
+#include "util/branch.h"
+#include "util/callchain.h"
+#include "util/values.h"
+
+#include "perf.h"
+#include "util/debug.h"
+#include "util/event.h"
+#include "util/evlist.h"
+#include "util/evsel.h"
+#include "util/evswitch.h"
+#include "util/header.h"
+#include "util/mem-info.h"
+#include "util/session.h"
+#include "util/srcline.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/unwind.h"
+#include "util/util.h" // perf_tip()
+#include "ui/ui.h"
+#include "ui/progress.h"
+#include "util/block-info.h"
+
+#include <dlfcn.h>
+#include <errno.h>
+#include <inttypes.h>
+#include <regex.h>
+#include <linux/ctype.h>
+#include <signal.h>
+#include <linux/bitmap.h>
+#include <linux/list_sort.h>
+#include <linux/string.h>
+#include <linux/stringify.h>
+#include <linux/time64.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <linux/mman.h>
+
+#ifdef HAVE_LIBTRACEEVENT
+#include <event-parse.h>
+#endif
+
+struct report {
+	struct perf_tool	tool;
+	struct perf_session	*session;
+	struct evswitch		evswitch;
+#ifdef HAVE_SLANG_SUPPORT
+	bool			use_tui;
+#endif
+#ifdef HAVE_GTK2_SUPPORT
+	bool			use_gtk;
+#endif
+	bool			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;
+	bool			stitch_lbr;
+	bool			disable_order;
+	bool			skip_empty;
+	bool			data_type;
+	int			max_stack;
+	struct perf_read_values	show_threads_values;
+	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;
+	u64			total_cycles;
+	u64			total_samples;
+	u64			singlethreaded_samples;
+	int			socket_filter;
+	DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
+	struct branch_type_stat	brtype_stat;
+	bool			symbol_ipc;
+	bool			total_cycles_mode;
+	struct block_report	*block_reports;
+	int			nr_block_reports;
+};
+
+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);
+		if (!default_sort_order) {
+			pr_err("Not enough memory for report.sort_order\n");
+			return -1;
+		}
+		return 0;
+	}
+
+	if (!strcmp(var, "report.skip-empty")) {
+		rep->skip_empty = perf_config_bool(var, value);
+		return 0;
+	}
+
+	pr_debug("%s variable unknown, ignoring...", var);
+	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_sample *sample = iter->sample;
+	struct mem_info *mi;
+	struct branch_info *bi;
+
+	if (!ui__has_annotation() && !rep->symbol_ipc)
+		return 0;
+
+	if (sort__mode == SORT_MODE__BRANCH) {
+		bi = he->branch_info;
+		err = addr_map_symbol__inc_samples(&bi->from, sample);
+		if (err)
+			goto out;
+
+		err = addr_map_symbol__inc_samples(&bi->to, sample);
+
+	} else if (rep->mem_mode) {
+		mi = he->mem_info;
+		err = addr_map_symbol__inc_samples(mem_info__daddr(mi), sample);
+		if (err)
+			goto out;
+
+		err = hist_entry__inc_addr_samples(he, sample, al->addr);
+
+	} else if (symbol_conf.cumulate_callchain) {
+		if (single)
+			err = hist_entry__inc_addr_samples(he, sample, al->addr);
+	} else {
+		err = hist_entry__inc_addr_samples(he, sample, 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 = he->branch_info;
+	struct perf_sample *sample = iter->sample;
+	int err;
+
+	branch_type_count(&rep->brtype_stat, &bi->flags,
+			  bi->from.addr, bi->to.addr);
+
+	if (!ui__has_annotation() && !rep->symbol_ipc)
+		return 0;
+
+	err = addr_map_symbol__inc_samples(&bi->from, sample);
+	if (err)
+		goto out;
+
+	err = addr_map_symbol__inc_samples(&bi->to, sample);
+
+out:
+	return err;
+}
+
+static void setup_forced_leader(struct report *report,
+				struct evlist *evlist)
+{
+	if (report->group_set)
+		evlist__force_leader(evlist);
+}
+
+static int process_feature_event(const struct perf_tool *tool,
+				 struct perf_session *session,
+				 union perf_event *event)
+{
+	struct report *rep = container_of(tool, struct report, tool);
+	int ret = perf_event__process_feature(tool, session, event);
+
+	if (ret == 0 && event->header.size == sizeof(struct perf_record_header_feature) &&
+	    (int)event->feat.feat_id >= session->header.last_feat) {
+		/*
+		 * (feat_id = HEADER_LAST_FEATURE) is the end marker which means
+		 * all features are received.
+		 */
+		if (rep->header_only)
+			session_done = 1;
+
+		setup_forced_leader(rep, session->evlist);
+	}
+	return ret;
+}
+
+static int process_sample_event(const struct perf_tool *tool,
+				union perf_event *event,
+				struct perf_sample *sample,
+				struct machine *machine)
+{
+	struct report *rep = container_of(tool, struct report, tool);
+	struct addr_location al;
+	struct hist_entry_iter iter = {
+		.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 (evswitch__discard(&rep->evswitch, sample->evsel))
+		return 0;
+
+	addr_location__init(&al);
+	if (machine__resolve(machine, &al, sample) < 0) {
+		pr_debug("problem processing %s (%u) event at offset %#" PRIx64 ", skipping it.\n",
+			 perf_event__name(event->header.type), event->header.type,
+			 sample->file_offset);
+		ret = -1;
+		goto out_put;
+	}
+
+	if (rep->stitch_lbr)
+		thread__set_lbr_stitch_enable(al.thread, true);
+
+	if (symbol_conf.hide_unresolved && al.sym == NULL)
+		goto out_put;
+
+	if (rep->cpu_list && (sample->cpu >= MAX_NR_CPUS ||
+			     !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)
+		dso__set_hit(map__dso(al.map));
+
+	if (ui__has_annotation() || rep->symbol_ipc || rep->total_cycles_mode) {
+		hist__account_cycles(sample->branch_stack, &al, sample,
+				     rep->nonany_branch_mode,
+				     &rep->total_cycles);
+	}
+
+	rep->total_samples++;
+	if (al.parallelism == 1)
+		rep->singlethreaded_samples++;
+
+	ret = hist_entry_iter__add(&iter, &al, rep->max_stack, rep);
+	if (ret < 0)
+		pr_debug("problem adding hist entry at offset %#" PRIx64 ", skipping event\n",
+			 sample->file_offset);
+out_put:
+	addr_location__exit(&al);
+	return ret;
+}
+
+static int process_read_event(const struct perf_tool *tool,
+			      union perf_event *event,
+			      struct perf_sample *sample __maybe_unused,
+			      struct machine *machine __maybe_unused)
+{
+	struct report *rep = container_of(tool, struct report, tool);
+
+	if (rep->show_threads) {
+		int err = perf_read_values_add_value(&rep->show_threads_values,
+					   event->read.pid, event->read.tid,
+					   sample->evsel,
+					   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 = evlist__combined_sample_type(session->evlist);
+	bool is_pipe = perf_data__is_pipe(session->data);
+	struct evsel *evsel;
+
+	if (session->itrace_synth_opts->callchain ||
+	    session->itrace_synth_opts->add_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 ||
+	    session->itrace_synth_opts->add_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(session->evlist);
+		}
+	}
+
+	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 (sort__mode == SORT_MODE__MEMORY) {
+		/*
+		 * FIXUP: prior to kernel 5.18, Arm SPE missed to set
+		 * PERF_SAMPLE_DATA_SRC bit in sample type.  For backward
+		 * compatibility, set the bit if it's an old perf data file.
+		 */
+		evlist__for_each_entry(session->evlist, evsel) {
+			if (strstr(evsel__name(evsel), "arm_spe") &&
+				!(sample_type & PERF_SAMPLE_DATA_SRC)) {
+				evsel->core.attr.sample_type |= PERF_SAMPLE_DATA_SRC;
+				sample_type |= PERF_SAMPLE_DATA_SRC;
+			}
+		}
+
+		if (!is_pipe && !(sample_type & PERF_SAMPLE_DATA_SRC)) {
+			ui__error("Selected --mem-mode but no mem data. "
+				  "Did you call perf record without -d?\n");
+			return -1;
+		}
+	}
+
+	callchain_param_setup(sample_type, perf_session__e_machine(session, /*e_flags=*/NULL));
+
+	if (rep->stitch_lbr && (callchain_param.record_mode != CALLCHAIN_LBR)) {
+		ui__warning("Can't find LBR callchain. Switch off --stitch-lbr.\n"
+			    "Please apply --call-graph lbr when recording.\n");
+		rep->stitch_lbr = false;
+	}
+
+	/* ??? handle more cases than just ANY? */
+	if (!(evlist__combined_branch_type(session->evlist) & PERF_SAMPLE_BRANCH_ANY))
+		rep->nonany_branch_mode = true;
+
+#if !defined(HAVE_LIBUNWIND_SUPPORT) && !defined(HAVE_LIBDW_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_samples;
+	u64 nr_events = hists->stats.total_period;
+	struct 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 (evsel__is_group_event(evsel)) {
+		struct evsel *pos;
+
+		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_samples;
+				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->core.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);
+		if (sort_order || !field_order) {
+			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 evlist__tui_block_hists_browse(struct evlist *evlist, struct report *rep)
+{
+	struct evsel *pos;
+	int i = 0, ret;
+
+	evlist__for_each_entry(evlist, pos) {
+		ret = report__browse_block_hists(&rep->block_reports[i++].hist,
+						 rep->min_percent, pos,
+						 perf_session__env(rep->session));
+		if (ret != 0)
+			return ret;
+	}
+
+	return 0;
+}
+
+static int evlist__tty_browse_hists(struct evlist *evlist, struct report *rep, const char *help)
+{
+	struct evsel *pos;
+	int i = 0;
+
+	if (!quiet) {
+		fprintf(stdout, "#\n# Total Lost Samples: %" PRIu64 "\n#\n",
+			evlist__stats(evlist)->total_lost_samples);
+	}
+
+	evlist__for_each_entry(evlist, pos) {
+		struct hists *hists = evsel__hists(pos);
+		const char *evname = evsel__name(pos);
+
+		i++;
+		if (symbol_conf.event_group && !evsel__is_group_leader(pos))
+			continue;
+
+		if (rep->skip_empty && !hists->stats.nr_samples)
+			continue;
+
+		hists__fprintf_nr_sample_events(hists, rep, evname, stdout);
+
+		if (rep->total_cycles_mode) {
+			char *buf;
+
+			if (!annotation_br_cntr_abbr_list(&buf, pos, true)) {
+				fprintf(stdout, "%s", buf);
+				fprintf(stdout, "#\n");
+				free(buf);
+			}
+			report__browse_block_hists(&rep->block_reports[i - 1].hist,
+						   rep->min_percent, pos, NULL);
+			continue;
+		}
+
+		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 (evlist__exclude_kernel(rep->session->evlist))
+		return;
+
+	if (kernel_map == NULL ||
+	    (dso__hit(map__dso(kernel_map)) &&
+	     (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 evlist *evlist, const char *help,
+			    struct hist_browser_timer *timer, float min_pcnt);
+
+	hist_browser = dlsym(perf_gtk_handle, "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 evlist *evlist = session->evlist;
+	char *help = NULL, *path = NULL;
+
+	path = system_path(TIPDIR);
+	if (perf_tip(&help, path) || help == NULL) {
+		/* fallback for people who don't install perf ;-) */
+		free(path);
+		path = system_path(DOCDIR);
+		if (perf_tip(&help, path) || help == NULL)
+			help = strdup("Cannot load tips.txt file, please install perf!");
+	}
+	free(path);
+
+	switch (use_browser) {
+	case 1:
+		if (rep->total_cycles_mode) {
+			ret = evlist__tui_block_hists_browse(evlist, rep);
+			break;
+		}
+
+		ret = evlist__tui_browse_hists(evlist, help, NULL, rep->min_percent,
+					       perf_session__env(session), true);
+		/*
+		 * 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 != K_RELOAD)
+			ret = 0;
+		break;
+	case 2:
+		ret = report__gtk_browse_hists(rep, help);
+		break;
+	default:
+		ret = evlist__tty_browse_hists(evlist, rep, help);
+		break;
+	}
+	free(help);
+	return ret;
+}
+
+static int report__collapse_hists(struct report *rep)
+{
+	struct perf_session *session = rep->session;
+	struct evlist *evlist = session->evlist;
+	struct ui_progress prog;
+	struct evsel *pos;
+	int ret = 0;
+
+	/*
+	 * The pipe data needs to setup hierarchy hpp formats now, because it
+	 * cannot know about evsels in the data before reading the data.  The
+	 * normal file data saves the event (attribute) info in the header
+	 * section, but pipe does not have the luxury.
+	 */
+	if (perf_data__is_pipe(session->data)) {
+		if (perf_hpp__setup_hists_formats(&perf_hpp_list, evlist) < 0) {
+			ui__error("Failed to setup hierarchy output formats\n");
+			return -1;
+		}
+	}
+
+	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->core.idx == 0) {
+			hists->symbol_filter_str =
+				rep->symbol_filter_str ?
+				strdup(rep->symbol_filter_str) : NULL;
+		}
+
+		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 && !evsel__is_group_leader(pos)) {
+			struct hists *leader_hists = evsel__hists(evsel__leader(pos));
+
+			hists__match(leader_hists, hists);
+			hists__link(leader_hists, hists);
+		}
+	}
+
+	ui_progress__finish();
+	return ret;
+}
+
+static int hists__resort_cb(struct hist_entry *he, void *arg)
+{
+	struct report *rep = arg;
+	struct symbol *sym = he->ms.sym;
+
+	if (rep->symbol_ipc && sym && !symbol__is_annotate2(sym)) {
+		struct evsel *evsel = hists_to_evsel(he->hists);
+
+		symbol__annotate2(&he->ms, evsel, NULL);
+	}
+
+	return 0;
+}
+
+static void report__output_resort(struct report *rep)
+{
+	struct ui_progress prog;
+	struct evsel *pos;
+
+	ui_progress__init(&prog, rep->nr_entries, "Sorting events for output...");
+
+	evlist__for_each_entry(rep->session->evlist, pos) {
+		evsel__output_resort_cb(pos, &prog, hists__resort_cb, rep);
+	}
+
+	ui_progress__finish();
+}
+
+static int count_sample_event(const struct perf_tool *tool __maybe_unused,
+			      union perf_event *event __maybe_unused,
+			      struct perf_sample *sample,
+			      struct machine *machine __maybe_unused)
+{
+	struct hists *hists = evsel__hists(sample->evsel);
+
+	hists__inc_nr_events(hists);
+	return 0;
+}
+
+static int count_lost_samples_event(const struct perf_tool *tool,
+				    union perf_event *event,
+				    struct perf_sample *sample,
+				    struct machine *machine __maybe_unused)
+{
+	struct report *rep = container_of(tool, struct report, tool);
+	struct evsel *evsel = sample->evsel;
+
+	if (!evsel)
+		evsel = evlist__id2evsel(rep->session->evlist, sample->id);
+
+	if (evsel) {
+		struct hists *hists = evsel__hists(evsel);
+		u32 count = event->lost_samples.lost;
+
+		if (event->header.misc & PERF_RECORD_MISC_LOST_SAMPLES_BPF)
+			hists__inc_nr_dropped_samples(hists, count);
+		else
+			hists__inc_nr_lost_samples(hists, count);
+	}
+	return 0;
+}
+
+static int process_attr(const struct perf_tool *tool __maybe_unused,
+			union perf_event *event,
+			struct evlist **pevlist);
+
+static void stats_setup(struct report *rep)
+{
+	perf_tool__init(&rep->tool, /*ordered_events=*/false);
+	rep->tool.attr = process_attr;
+	rep->tool.sample = count_sample_event;
+	rep->tool.lost_samples = count_lost_samples_event;
+	rep->tool.event_update = perf_event__process_event_update;
+	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);
+	evlist__fprintf_nr_events(session->evlist, stdout);
+	return 0;
+}
+
+static void tasks_setup(struct report *rep)
+{
+	perf_tool__init(&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.attr = process_attr;
+	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 maps__fprintf_task_args {
+	int indent;
+	FILE *fp;
+	size_t printed;
+};
+
+static int maps__fprintf_task_cb(struct map *map, void *data)
+{
+	struct maps__fprintf_task_args *args = data;
+	const struct dso *dso = map__dso(map);
+	u32 prot = map__prot(map);
+	const struct dso_id *dso_id = dso__id_const(dso);
+	int ret;
+	char buf[SBUILD_ID_SIZE];
+
+	if (dso_id->mmap2_valid)
+		snprintf(buf, sizeof(buf), "%" PRIu64, dso_id->ino);
+	else
+		build_id__snprintf(&dso_id->build_id, buf, sizeof(buf));
+
+	ret = fprintf(args->fp,
+		"%*s  %" PRIx64 "-%" PRIx64 " %c%c%c%c %08" PRIx64 " %s %s\n",
+		args->indent, "", map__start(map), map__end(map),
+		prot & PROT_READ ? 'r' : '-',
+		prot & PROT_WRITE ? 'w' : '-',
+		prot & PROT_EXEC ? 'x' : '-',
+		map__flags(map) ? 's' : 'p',
+		map__pgoff(map),
+		buf, dso__name(dso));
+
+	if (ret < 0)
+		return ret;
+
+	args->printed += ret;
+	return 0;
+}
+
+static size_t maps__fprintf_task(struct maps *maps, int indent, FILE *fp)
+{
+	struct maps__fprintf_task_args args = {
+		.indent = indent,
+		.fp = fp,
+		.printed = 0,
+	};
+
+	maps__for_each_map(maps, maps__fprintf_task_cb, &args);
+
+	return args.printed;
+}
+
+static int thread_level(struct machine *machine, const struct thread *thread)
+{
+	struct thread *parent_thread;
+	int res;
+
+	if (thread__tid(thread) <= 0)
+		return 0;
+
+	if (thread__ppid(thread) <= 0)
+		return 1;
+
+	parent_thread = machine__find_thread(machine, -1, thread__ppid(thread));
+	if (!parent_thread) {
+		pr_err("Missing parent thread of %d\n", thread__tid(thread));
+		return 0;
+	}
+	res = 1 + thread_level(machine, parent_thread);
+	thread__put(parent_thread);
+	return res;
+}
+
+static void task__print_level(struct machine *machine, struct thread *thread, FILE *fp)
+{
+	int level = thread_level(machine, thread);
+	int comm_indent = fprintf(fp, "  %8d %8d %8d |%*s",
+				  thread__pid(thread), thread__tid(thread),
+				  thread__ppid(thread), level, "");
+
+	fprintf(fp, "%s\n", thread__comm_str(thread));
+
+	maps__fprintf_task(thread__maps(thread), comm_indent, fp);
+}
+
+/*
+ * Sort two thread list nodes such that they form a tree. The first node is the
+ * root of the tree, its children are ordered numerically after it. If a child
+ * has children itself then they appear immediately after their parent. For
+ * example, the 4 threads in the order they'd appear in the list:
+ * - init with a TID 1 and a parent of 0
+ * - systemd with a TID 3000 and a parent of init/1
+ * - systemd child thread with TID 4000, the parent is 3000
+ * - NetworkManager is a child of init with a TID of 3500.
+ */
+static int task_list_cmp(void *priv, const struct list_head *la, const struct list_head *lb)
+{
+	struct machine *machine = priv;
+	struct thread_list *task_a = list_entry(la, struct thread_list, list);
+	struct thread_list *task_b = list_entry(lb, struct thread_list, list);
+	struct thread *a = task_a->thread;
+	struct thread *b = task_b->thread;
+	int level_a, level_b, res;
+
+	/* Same thread? */
+	if (thread__tid(a) == thread__tid(b))
+		return 0;
+
+	/* Compare a and b to root. */
+	if (thread__tid(a) == 0)
+		return -1;
+
+	if (thread__tid(b) == 0)
+		return 1;
+
+	/* If parents match sort by tid. */
+	if (thread__ppid(a) == thread__ppid(b))
+		return thread__tid(a) < thread__tid(b) ? -1 : 1;
+
+	/*
+	 * Find a and b such that if they are a child of each other a and b's
+	 * tid's match, otherwise a and b have a common parent and distinct
+	 * tid's to sort by. First make the depths of the threads match.
+	 */
+	level_a = thread_level(machine, a);
+	level_b = thread_level(machine, b);
+	a = thread__get(a);
+	b = thread__get(b);
+	for (int i = level_a; i > level_b; i--) {
+		struct thread *parent = machine__find_thread(machine, -1, thread__ppid(a));
+
+		thread__put(a);
+		if (!parent) {
+			pr_err("Missing parent thread of %d\n", thread__tid(a));
+			thread__put(b);
+			return -1;
+		}
+		a = parent;
+	}
+	for (int i = level_b; i > level_a; i--) {
+		struct thread *parent = machine__find_thread(machine, -1, thread__ppid(b));
+
+		thread__put(b);
+		if (!parent) {
+			pr_err("Missing parent thread of %d\n", thread__tid(b));
+			thread__put(a);
+			return 1;
+		}
+		b = parent;
+	}
+	/* Search up to a common parent. */
+	while (thread__ppid(a) != thread__ppid(b)) {
+		struct thread *parent;
+
+		parent = machine__find_thread(machine, -1, thread__ppid(a));
+		thread__put(a);
+		if (!parent)
+			pr_err("Missing parent thread of %d\n", thread__tid(a));
+		a = parent;
+		parent = machine__find_thread(machine, -1, thread__ppid(b));
+		thread__put(b);
+		if (!parent)
+			pr_err("Missing parent thread of %d\n", thread__tid(b));
+		b = parent;
+		if (!a || !b) {
+			/* Handle missing parent (unexpected) with some sanity. */
+			thread__put(a);
+			thread__put(b);
+			return !a && !b ? 0 : (!a ? -1 : 1);
+		}
+	}
+	if (thread__tid(a) == thread__tid(b)) {
+		/* a is a child of b or vice-versa, deeper levels appear later. */
+		res = level_a < level_b ? -1 : (level_a > level_b ? 1 : 0);
+	} else {
+		/* Sort by tid now the parent is the same. */
+		res = thread__tid(a) < thread__tid(b) ? -1 : 1;
+	}
+	thread__put(a);
+	thread__put(b);
+	return res;
+}
+
+static int tasks_print(struct report *rep, FILE *fp)
+{
+	struct machine *machine = &rep->session->machines.host;
+	LIST_HEAD(tasks);
+	int ret;
+
+	ret = machine__thread_list(machine, &tasks);
+	if (!ret) {
+		struct thread_list *task;
+
+		list_sort(machine, &tasks, task_list_cmp);
+
+		fprintf(fp, "# %8s %8s %8s  %s\n", "pid", "tid", "ppid", "comm");
+
+		list_for_each_entry(task, &tasks, list)
+			task__print_level(machine, task->thread, fp);
+	}
+	thread_list__delete(&tasks);
+	return ret;
+}
+
+static int __cmd_report(struct report *rep)
+{
+	int ret;
+	struct perf_session *session = rep->session;
+	struct 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;
+	}
+
+	/* Don't show Latency column for non-parallel profiles by default. */
+	if (!symbol_conf.prefer_latency && rep->total_samples &&
+		rep->singlethreaded_samples * 100 / rep->total_samples >= 99)
+		perf_hpp__cancel_latency(session->evlist);
+
+	evlist__check_mem_load_aux(session->evlist);
+
+	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) {
+			stats_print(rep);
+			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 data has no samples!\n", data->path);
+		return 0;
+	}
+
+	report__output_resort(rep);
+
+	if (rep->total_cycles_mode) {
+		int nr_hpps = 4;
+		int block_hpps[PERF_HPP_REPORT__BLOCK_MAX_INDEX] = {
+			PERF_HPP_REPORT__BLOCK_TOTAL_CYCLES_PCT,
+			PERF_HPP_REPORT__BLOCK_LBR_CYCLES,
+			PERF_HPP_REPORT__BLOCK_CYCLES_PCT,
+			PERF_HPP_REPORT__BLOCK_AVG_CYCLES,
+		};
+
+		if (evlist__nr_br_cntr(session->evlist) > 0)
+			block_hpps[nr_hpps++] = PERF_HPP_REPORT__BLOCK_BRANCH_COUNTER;
+
+		block_hpps[nr_hpps++] = PERF_HPP_REPORT__BLOCK_RANGE;
+		block_hpps[nr_hpps++] = PERF_HPP_REPORT__BLOCK_DSO;
+
+		rep->block_reports = block_info__create_report(session->evlist,
+							       rep->total_cycles,
+							       block_hpps, nr_hpps,
+							       &rep->nr_block_reports);
+		if (!rep->block_reports)
+			return -1;
+	}
+
+	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);
+}
+
+static int
+parse_time_quantum(const struct option *opt, const char *arg,
+		   int unset __maybe_unused)
+{
+	unsigned long *time_q = opt->value;
+	char *end;
+
+	*time_q = strtoul(arg, &end, 0);
+	if (end == arg)
+		goto parse_err;
+	if (*time_q == 0) {
+		pr_err("time quantum cannot be 0");
+		return -1;
+	}
+	end = skip_spaces(end);
+	if (*end == 0)
+		return 0;
+	if (!strcmp(end, "s")) {
+		*time_q *= NSEC_PER_SEC;
+		return 0;
+	}
+	if (!strcmp(end, "ms")) {
+		*time_q *= NSEC_PER_MSEC;
+		return 0;
+	}
+	if (!strcmp(end, "us")) {
+		*time_q *= NSEC_PER_USEC;
+		return 0;
+	}
+	if (!strcmp(end, "ns"))
+		return 0;
+parse_err:
+	pr_err("Cannot parse time quantum `%s'\n", arg);
+	return -1;
+}
+
+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;
+}
+
+static int
+report_parse_addr2line_config(const struct option *opt __maybe_unused,
+			      const char *arg, int unset __maybe_unused)
+{
+	return addr2line_configure("addr2line.style", arg, NULL);
+}
+
+static int process_attr(const struct perf_tool *tool __maybe_unused,
+			union perf_event *event,
+			struct evlist **pevlist)
+{
+	struct perf_session *session;
+	u64 sample_type;
+	int err;
+
+	err = perf_event__process_attr(tool, event, pevlist);
+	if (err)
+		return err;
+
+	/*
+	 * Check if we need to enable callchains based
+	 * on events sample_type.
+	 */
+	sample_type = evlist__combined_sample_type(*pevlist);
+	session = evlist__session(*pevlist);
+	callchain_param_setup(sample_type, perf_session__e_machine(session, /*e_flags=*/NULL));
+	return 0;
+}
+
+#define CALLCHAIN_BRANCH_SORT_ORDER	\
+	"srcline,symbol,dso,callchain_branch_predicted," \
+	"callchain_branch_abort,callchain_branch_cycles"
+
+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"
+	static 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 = {
+		.max_stack		 = PERF_MAX_STACK_DEPTH,
+		.pretty_printing_style	 = "normal",
+		.socket_filter		 = -1,
+		.skip_empty		 = true,
+	};
+	char *sort_order_help = sort_help("sort by key(s):", SORT_MODE__NORMAL);
+	char *field_order_help = sort_help("output field(s):", SORT_MODE__NORMAL);
+	const char *disassembler_style = NULL, *objdump_path = NULL, *addr2line_path = NULL;
+	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 warnings or messages"),
+	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"),
+#ifdef HAVE_SLANG_SUPPORT
+	OPT_BOOLEAN(0, "tui", &report.use_tui, "Use the TUI interface"),
+#endif
+#ifdef HAVE_GTK2_SUPPORT
+	OPT_BOOLEAN(0, "gtk", &report.use_gtk, "Use the GTK2 interface"),
+#endif
+	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_order_help),
+	OPT_STRING('F', "fields", &field_order, "key[,keys...]",
+		   field_order_help),
+	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. "
+		    "Enabled by default, use --no-children to disable."),
+	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[,layout]", SYMFS_HELP,
+		     symbol__config_symfs),
+	OPT_STRING('C', "cpu", &report.cpu_list, "cpu",
+		   "list of cpus to profile"),
+	OPT_STRING(0, "parallelism", &symbol_conf.parallelism_list_str, "parallelism",
+		   "only consider these parallelism levels (cpu set format)"),
+	OPT_BOOLEAN('I', "show-info", &report.show_full_info,
+		    "Display extended information about perf.data file"),
+	OPT_BOOLEAN(0, "source", &annotate_opts.annotate_src,
+		    "Interleave source code with assembly code (default)"),
+	OPT_BOOLEAN(0, "asm-raw", &annotate_opts.show_asm_raw,
+		    "Display raw encoding of assembly instructions (default)"),
+	OPT_STRING('M', "disassembler-style", &disassembler_style, "disassembler style",
+		   "Specify disassembler style (e.g. -M intel for intel syntax)"),
+	OPT_STRING(0, "prefix", &annotate_opts.prefix, "prefix",
+		    "Add prefix to source file path names in programs (with --prefix-strip)"),
+	OPT_STRING(0, "prefix-strip", &annotate_opts.prefix_strip, "N",
+		    "Strip first N entries of source file path name in programs (with --prefix)"),
+	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_INTEGER(0, "group-sort-idx", &symbol_conf.group_sort_idx,
+		    "Sort the output by the event at the index n in group. "
+		    "If n is invalid, sort by the first event. "
+		    "WARNING: should be used on grouped events."),
+	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", &objdump_path, "path",
+		   "objdump binary to use for disassembly and annotations"),
+	OPT_STRING(0, "addr2line", &addr2line_path, "path",
+		   "addr2line binary to use for line numbers"),
+	OPT_CALLBACK(0, "addr2line-style", NULL, "addr2line style",
+		     "addr2line styles (libdw,llvm,libbfd,addr2line)",
+		     report_parse_addr2line_config),
+	OPT_CALLBACK(0, "unwind-style", NULL, "unwind style",
+		     "unwind styles (libdw,libunwind)",
+		     unwind__option),
+	OPT_BOOLEAN(0, "demangle", &symbol_conf.demangle,
+		    "Symbol demangling. Enabled by default, use --no-demangle to disable."),
+	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_INTEGER(0, "samples", &symbol_conf.res_sample,
+		    "Number of samples to save per histogram entry for individual browsing"),
+	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\n" ITRACE_HELP,
+			    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_BOOLEAN(0, "stitch-lbr", &report.stitch_lbr,
+		    "Enable LBR callgraph stitching approach"),
+	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('H', "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", &annotate_opts, "local-period",
+		     "Set percent type local/global-period/hits",
+		     annotate_parse_percent_type),
+	OPT_BOOLEAN(0, "ns", &symbol_conf.nanosecs, "Show times in nanosecs"),
+	OPT_CALLBACK(0, "time-quantum", &symbol_conf.time_quantum, "time (ms|us|ns|s)",
+		     "Set time quantum for time sort key (default 100ms)",
+		     parse_time_quantum),
+	OPTS_EVSWITCH(&report.evswitch),
+	OPT_BOOLEAN(0, "total-cycles", &report.total_cycles_mode,
+		    "Sort all blocks by 'Sampled Cycles%'"),
+	OPT_BOOLEAN(0, "disable-order", &report.disable_order,
+		    "Disable raw trace ordering"),
+	OPT_BOOLEAN(0, "skip-empty", &report.skip_empty,
+		    "Do not display empty (or dummy) events in the output"),
+	OPT_BOOLEAN(0, "latency", &symbol_conf.prefer_latency,
+		    "Show latency-centric profile rather than the default\n"
+		    "\t\t\t  CPU-consumption-centric profile\n"
+		    "\t\t\t  (requires perf record --latency flag)."),
+	OPT_END()
+	};
+	struct perf_data data = {
+		.mode  = PERF_DATA_MODE_READ,
+	};
+	int ret = hists__init();
+	char sort_tmp[128];
+	bool ordered_events = true;
+
+	if (ret < 0)
+		goto exit;
+
+	/*
+	 * tasks_mode require access to exited threads to list those that are in
+	 * the data file. Off-cpu events are synthesized after other events and
+	 * reference exited threads.
+	 */
+	symbol_conf.keep_exited_threads = true;
+
+	annotation_options__init();
+
+	ret = perf_config(report__config, &report);
+	if (ret)
+		goto exit;
+
+	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 (disassembler_style) {
+		annotate_opts.disassembler_style = strdup(disassembler_style);
+		if (!annotate_opts.disassembler_style)
+			return -ENOMEM;
+	}
+	if (objdump_path) {
+		annotate_opts.objdump_path = strdup(objdump_path);
+		if (!annotate_opts.objdump_path)
+			return -ENOMEM;
+	}
+	if (addr2line_path) {
+		symbol_conf.addr2line_path = strdup(addr2line_path);
+		if (!symbol_conf.addr2line_path)
+			return -ENOMEM;
+	}
+
+	if (annotate_check_args() < 0) {
+		ret = -EINVAL;
+		goto exit;
+	}
+
+	if (report.mmaps_mode)
+		report.tasks_mode = true;
+
+	if (dump_trace && report.disable_order)
+		ordered_events = false;
+
+	if (quiet)
+		perf_quiet_option();
+
+	ret = symbol__validate_sym_arguments();
+	if (ret)
+		goto exit;
+
+	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 || itrace_synth_opts.add_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";
+	}
+
+repeat:
+	data.path  = input_name;
+	data.force = symbol_conf.force;
+
+	symbol_conf.skip_empty = report.skip_empty;
+
+	perf_tool__init(&report.tool, ordered_events);
+	report.tool.sample		 = process_sample_event;
+	report.tool.mmap		 = perf_event__process_mmap;
+	report.tool.mmap2		 = perf_event__process_mmap2;
+	report.tool.comm		 = perf_event__process_comm;
+	report.tool.namespaces		 = perf_event__process_namespaces;
+	report.tool.cgroup		 = perf_event__process_cgroup;
+	report.tool.exit		 = perf_event__process_exit;
+	report.tool.fork		 = perf_event__process_fork;
+	report.tool.context_switch	 = perf_event__process_switch;
+	report.tool.lost		 = perf_event__process_lost;
+	report.tool.read		 = process_read_event;
+	report.tool.attr		 = process_attr;
+#ifdef HAVE_LIBTRACEEVENT
+	report.tool.tracing_data	 = perf_event__process_tracing_data;
+#endif
+	report.tool.build_id		 = perf_event__process_build_id;
+	report.tool.id_index		 = perf_event__process_id_index;
+	report.tool.auxtrace_info	 = perf_event__process_auxtrace_info;
+	report.tool.auxtrace		 = perf_event__process_auxtrace;
+	report.tool.event_update	 = perf_event__process_event_update;
+	report.tool.feature		 = process_feature_event;
+	report.tool.ordering_requires_timestamps = true;
+	report.tool.merge_deferred_callchains = !dump_trace;
+
+	session = perf_session__new(&data, &report.tool);
+	if (IS_ERR(session)) {
+		ret = PTR_ERR(session);
+		goto exit;
+	}
+
+	ret = evswitch__init(&report.evswitch, session->evlist, stderr);
+	if (ret)
+		goto exit;
+
+	if (zstd_init(&(session->zstd_data), 0) < 0)
+		pr_warning("Decompression initialization failed. Reported data may be incomplete.\n");
+
+	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);
+	if (evlist__combined_sample_type(session->evlist) & PERF_SAMPLE_STACK_USER)
+		has_br_stack = false;
+
+	setup_forced_leader(&report, session->evlist);
+
+	if (symbol_conf.group_sort_idx && evlist__nr_groups(session->evlist) == 0) {
+		parse_options_usage(NULL, options, "group-sort-idx", 0);
+		ret = -EINVAL;
+		goto error;
+	}
+
+	if (itrace_synth_opts.last_branch || itrace_synth_opts.add_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 = true;
+		symbol_conf.use_callchain = true;
+		callchain_register_param(&callchain_param);
+		if (sort_order == NULL)
+			sort_order = CALLCHAIN_BRANCH_SORT_ORDER;
+	}
+
+	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) {
+		/*
+		 * The hist entries in hierarchy are added during the collpase
+		 * phase.  Let's enable it even if no sort keys require it.
+		 */
+		perf_hpp_list.need_collapse = true;
+	}
+
+	if (report.use_stdio)
+		use_browser = 0;
+#ifdef HAVE_SLANG_SUPPORT
+	else if (report.use_tui)
+		use_browser = 1;
+#endif
+#ifdef HAVE_GTK2_SUPPORT
+	else if (report.use_gtk)
+		use_browser = 2;
+#endif
+
+	/* 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 (report.total_cycles_mode) {
+		if (sort__mode != SORT_MODE__BRANCH)
+			report.total_cycles_mode = false;
+		else
+			sort_order = NULL;
+	}
+
+	if ((sort_order && strstr(sort_order, "type")) ||
+	    (field_order && strstr(field_order, "type"))) {
+		report.data_type = true;
+		annotate_opts.annotate_src = false;
+
+		/* disable incompatible options */
+		symbol_conf.cumulate_callchain = false;
+
+#ifndef HAVE_LIBDW_SUPPORT
+		pr_err("Error: Data type profiling is disabled due to missing DWARF support\n");
+		goto error;
+#endif
+	}
+
+	if (strcmp(input_name, "-") != 0)
+		setup_browser(true);
+	else
+		use_browser = 0;
+
+	if (report.data_type && use_browser == 1) {
+		symbol_conf.annotate_data_member = true;
+		symbol_conf.annotate_data_sample = true;
+	}
+
+	symbol_conf.enable_latency = true;
+	if (report.disable_order || !perf_session__has_switch_events(session)) {
+		if (symbol_conf.parallelism_list_str ||
+			symbol_conf.prefer_latency ||
+			(sort_order && (strstr(sort_order, "latency") ||
+				strstr(sort_order, "parallelism"))) ||
+			(field_order && (strstr(field_order, "latency") ||
+				strstr(field_order, "parallelism")))) {
+			if (report.disable_order)
+				ui__error("Use of latency profile or parallelism is incompatible with --disable-order.\n");
+			else
+				ui__error("Use of latency profile or parallelism requires --latency flag during record.\n");
+			return -1;
+		}
+		/*
+		 * If user did not ask for anything related to
+		 * latency/parallelism explicitly, just don't show it.
+		 */
+		symbol_conf.enable_latency = false;
+	}
+
+	if (last_key != K_SWITCH_INPUT_DATA) {
+		if (sort_order && strstr(sort_order, "ipc")) {
+			parse_options_usage(report_usage, options, "s", 1);
+			goto error;
+		}
+
+		if (sort_order && strstr(sort_order, "symbol")) {
+			if (sort__mode == SORT_MODE__BRANCH) {
+				snprintf(sort_tmp, sizeof(sort_tmp), "%s,%s",
+					 sort_order, "ipc_lbr");
+				report.symbol_ipc = true;
+			} else {
+				snprintf(sort_tmp, sizeof(sort_tmp), "%s,%s",
+					 sort_order, "ipc_null");
+			}
+
+			sort_order = sort_tmp;
+		}
+	}
+
+	if ((last_key != K_SWITCH_INPUT_DATA && last_key != K_RELOAD) &&
+	    (setup_sorting(session->evlist, perf_session__env(session)) < 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) {
+			if (data.is_pipe) {
+				/*
+				 * we need to process first few records
+				 * which contains PERF_RECORD_HEADER_FEATURE.
+				 */
+				perf_session__process_events(session);
+			}
+			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() || report.symbol_ipc || report.data_type ||
+	    report.total_cycles_mode) {
+		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);
+		}
+		annotation_config__init();
+	}
+
+	if (symbol__init(perf_session__env(session)) < 0)
+		goto error;
+
+	if (report.time_str) {
+		ret = perf_time__parse_for_ranges(report.time_str, session,
+						  &report.ptime_range,
+						  &report.range_size,
+						  &report.range_num);
+		if (ret < 0)
+			goto error;
+
+		itrace_synth_opts__set_time_range(&itrace_synth_opts,
+						  report.ptime_range,
+						  report.range_num);
+	}
+
+#ifdef HAVE_LIBTRACEEVENT
+	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;
+	}
+#endif
+	sort__setup_elide(stdout);
+
+	ret = __cmd_report(&report);
+	if (ret == K_SWITCH_INPUT_DATA || ret == K_RELOAD) {
+		perf_session__delete(session);
+		last_key = K_SWITCH_INPUT_DATA;
+		/*
+		 * To support switching between data with and without callchains.
+		 * report__setup_sample_type() will update it properly.
+		 */
+		symbol_conf.use_callchain = false;
+		goto repeat;
+	} else
+		ret = 0;
+
+	if (!use_browser && (verbose > 2 || debug_kmaps))
+		perf_session__dump_kmaps(session);
+error:
+	if (report.ptime_range) {
+		itrace_synth_opts__clear_time_range(&itrace_synth_opts);
+		zfree(&report.ptime_range);
+	}
+
+	if (report.block_reports) {
+		block_info__free_report(report.block_reports,
+					report.nr_block_reports);
+		report.block_reports = NULL;
+	}
+
+	zstd_fini(&(session->zstd_data));
+	perf_session__delete(session);
+exit:
+	annotation_options__exit();
+	free(sort_order_help);
+	free(field_order_help);
+	return ret;
+}