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linux_old1/tools/perf/builtin-report.c

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// 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/map.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;
bool symbol_ipc;
};
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() && !rep->symbol_ipc)
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() && !rep->symbol_ipc)
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_session *session,
union perf_event *event)
{
struct report *rep = container_of(session->tool, struct report, tool);
if (event->feat.feat_id < HEADER_LAST_FEATURE)
return perf_event__process_feature(session, event);
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;
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 &&
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 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 && !sym->annotate2) {
struct perf_evsel *evsel = hists_to_evsel(he->hists);
symbol__annotate2(sym, he->ms.map, evsel,
&annotation__default_options, NULL);
}
return 0;
}
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_cb(pos, &prog,
hists__resort_cb, rep);
}
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_cached(&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 data has no samples!\n", data->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;
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 = {
.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\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_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();
char sort_tmp[128];
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.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 (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 (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() || report.symbol_ipc) {
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;
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;
}
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);
goto repeat;
} else
ret = 0;
error:
if (report.ptime_range)
zfree(&report.ptime_range);
perf_session__delete(session);
return ret;
}
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