builtin-report.c

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/*
 * 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/annotate.h"
#include "util/color.h"
#include <linux/list.h>
#include "util/cache.h"
#include <linux/rbtree.h>
#include "util/symbol.h"
#include "util/callchain.h"
#include "util/strlist.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 "util/parse-options.h"
#include "util/parse-events.h"

#include "util/thread.h"
#include "util/sort.h"
#include "util/hist.h"

#include <linux/bitmap.h>

struct perf_report {
    struct perf_tool    tool;
    struct perf_session *session;
    char const      *input_name;
    bool            force, use_tui, use_gtk, use_stdio;
    bool            hide_unresolved;
    bool            dont_use_callchains;
    bool            show_full_info;
    bool            show_threads;
    bool            inverted_callchain;
    struct perf_read_values show_threads_values;
    const char      *pretty_printing_style;
    symbol_filter_t     annotate_init;
    const char      *cpu_list;
    const char      *symbol_filter_str;
    DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
};

static int perf_report__add_branch_hist_entry(struct perf_tool *tool,
                    struct addr_location *al,
                    struct perf_sample *sample,
                    struct perf_evsel *evsel,
                      struct machine *machine)
{
    struct perf_report *rep = container_of(tool, struct perf_report, tool);
    struct symbol *parent = NULL;
    int err = 0;
    unsigned i;
    struct hist_entry *he;
    struct branch_info *bi, *bx;

    if ((sort__has_parent || symbol_conf.use_callchain)
        && sample->callchain) {
        err = machine__resolve_callchain(machine, evsel, al->thread,
                         sample, &parent);
        if (err)
            return err;
    }

    bi = machine__resolve_bstack(machine, al->thread,
                     sample->branch_stack);
    if (!bi)
        return -ENOMEM;

    for (i = 0; i < sample->branch_stack->nr; i++) {
        if (rep->hide_unresolved && !(bi[i].from.sym && bi[i].to.sym))
            continue;
        /*
         * The report shows the percentage of total branches captured
         * and not events sampled. Thus we use a pseudo period of 1.
         */
        he = __hists__add_branch_entry(&evsel->hists, al, parent,
                &bi[i], 1);
        if (he) {
            struct annotation *notes;
            err = -ENOMEM;
            bx = he->branch_info;
            if (bx->from.sym && use_browser == 1 && sort__has_sym) {
                notes = symbol__annotation(bx->from.sym);
                if (!notes->src
                    && symbol__alloc_hist(bx->from.sym) < 0)
                    goto out;

                err = symbol__inc_addr_samples(bx->from.sym,
                                   bx->from.map,
                                   evsel->idx,
                                   bx->from.al_addr);
                if (err)
                    goto out;
            }

            if (bx->to.sym && use_browser == 1 && sort__has_sym) {
                notes = symbol__annotation(bx->to.sym);
                if (!notes->src
                    && symbol__alloc_hist(bx->to.sym) < 0)
                    goto out;

                err = symbol__inc_addr_samples(bx->to.sym,
                                   bx->to.map,
                                   evsel->idx,
                                   bx->to.al_addr);
                if (err)
                    goto out;
            }
            evsel->hists.stats.total_period += 1;
            hists__inc_nr_events(&evsel->hists, PERF_RECORD_SAMPLE);
            err = 0;
        } else
            return -ENOMEM;
    }
out:
    return err;
}

static int perf_evsel__add_hist_entry(struct perf_evsel *evsel,
                      struct addr_location *al,
                      struct perf_sample *sample,
                      struct machine *machine)
{
    struct symbol *parent = NULL;
    int err = 0;
    struct hist_entry *he;

    if ((sort__has_parent || symbol_conf.use_callchain) && sample->callchain) {
        err = machine__resolve_callchain(machine, evsel, al->thread,
                         sample, &parent);
        if (err)
            return err;
    }

    he = __hists__add_entry(&evsel->hists, al, parent, sample->period);
    if (he == NULL)
        return -ENOMEM;

    if (symbol_conf.use_callchain) {
        err = callchain_append(he->callchain,
                       &callchain_cursor,
                       sample->period);
        if (err)
            return err;
    }
    /*
     * Only in the newt browser we are doing integrated annotation,
     * so we don't allocated the extra space needed because the stdio
     * code will not use it.
     */
    if (he->ms.sym != NULL && use_browser == 1 && sort__has_sym) {
        struct annotation *notes = symbol__annotation(he->ms.sym);

        assert(evsel != NULL);

        err = -ENOMEM;
        if (notes->src == NULL && symbol__alloc_hist(he->ms.sym) < 0)
            goto out;

        err = hist_entry__inc_addr_samples(he, evsel->idx, al->addr);
    }

    evsel->hists.stats.total_period += sample->period;
    hists__inc_nr_events(&evsel->hists, PERF_RECORD_SAMPLE);
out:
    return err;
}


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 perf_report *rep = container_of(tool, struct perf_report, tool);
    struct addr_location al;

    if (perf_event__preprocess_sample(event, machine, &al, sample,
                      rep->annotate_init) < 0) {
        fprintf(stderr, "problem processing %d event, skipping it.\n",
            event->header.type);
        return -1;
    }

    if (al.filtered || (rep->hide_unresolved && al.sym == NULL))
        return 0;

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

    if (sort__branch_mode == 1) {
        if (perf_report__add_branch_hist_entry(tool, &al, sample,
                               evsel, machine)) {
            pr_debug("problem adding lbr entry, skipping event\n");
            return -1;
        }
    } else {
        if (al.map != NULL)
            al.map->dso->hit = 1;

        if (perf_evsel__add_hist_entry(evsel, &al, sample, machine)) {
            pr_debug("problem incrementing symbol period, skipping event\n");
            return -1;
        }
    }
    return 0;
}

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 perf_report *rep = container_of(tool, struct perf_report, tool);

    if (rep->show_threads) {
        const char *name = evsel ? perf_evsel__name(evsel) : "unknown";
        perf_read_values_add_value(&rep->show_threads_values,
                       event->read.pid, event->read.tid,
                       event->read.id,
                       name,
                       event->read.value);
    }

    dump_printf(": %d %d %s %" PRIu64 "\n", event->read.pid, event->read.tid,
            evsel ? perf_evsel__name(evsel) : "FAIL",
            event->read.value);

    return 0;
}

/* For pipe mode, sample_type is not currently set */
static int perf_report__setup_sample_type(struct perf_report *rep)
{
    struct perf_session *self = rep->session;
    u64 sample_type = perf_evlist__sample_type(self->evlist);

    if (!self->fd_pipe && !(sample_type & PERF_SAMPLE_CALLCHAIN)) {
        if (sort__has_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) {
            ui__error("Selected -g but no callchain data. Did "
                    "you call 'perf record' without -g?\n");
            return -1;
        }
    } else if (!rep->dont_use_callchains &&
           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 (sort__branch_mode == 1) {
        if (!self->fd_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;
        }
    }

    return 0;
}

extern volatile int session_done;

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

static size_t hists__fprintf_nr_sample_events(struct hists *self,
                          const char *evname, FILE *fp)
{
    size_t ret;
    char unit;
    unsigned long nr_samples = self->stats.nr_events[PERF_RECORD_SAMPLE];
    u64 nr_events = self->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'", evname);

    ret += fprintf(fp, "\n# Event count (approx.): %" PRIu64, nr_events);
    return ret + fprintf(fp, "\n#\n");
}

static int perf_evlist__tty_browse_hists(struct perf_evlist *evlist,
                     struct perf_report *rep,
                     const char *help)
{
    struct perf_evsel *pos;

    list_for_each_entry(pos, &evlist->entries, node) {
        struct hists *hists = &pos->hists;
        const char *evname = perf_evsel__name(pos);

        hists__fprintf_nr_sample_events(hists, evname, stdout);
        hists__fprintf(hists, true, 0, 0, stdout);
        fprintf(stdout, "\n\n");
    }

    if (sort_order == default_sort_order &&
        parent_pattern == default_parent_pattern) {
        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);
        }
    }

    return 0;
}

static int __cmd_report(struct perf_report *rep)
{
    int ret = -EINVAL;
    u64 nr_samples;
    struct perf_session *session = rep->session;
    struct perf_evsel *pos;
    struct map *kernel_map;
    struct kmap *kernel_kmap;
    const char *help = "For a higher level overview, try: perf report --sort comm,dso";

    signal(SIGINT, sig_handler);

    if (rep->cpu_list) {
        ret = perf_session__cpu_bitmap(session, rep->cpu_list,
                           rep->cpu_bitmap);
        if (ret)
            goto out_delete;
    }

    if (use_browser <= 0)
        perf_session__fprintf_info(session, stdout, rep->show_full_info);

    if (rep->show_threads)
        perf_read_values_init(&rep->show_threads_values);

    ret = perf_report__setup_sample_type(rep);
    if (ret)
        goto out_delete;

    ret = perf_session__process_events(session, &rep->tool);
    if (ret)
        goto out_delete;

    kernel_map = session->host_machine.vmlinux_maps[MAP__FUNCTION];
    kernel_kmap = map__kmap(kernel_map);
    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) {
            const struct dso *kdso = kernel_map->dso;
            if (!RB_EMPTY_ROOT(&kdso->symbols[MAP__FUNCTION])) {
                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);
    }

    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);
        goto out_delete;
    }

    nr_samples = 0;
    list_for_each_entry(pos, &session->evlist->entries, node) {
        struct hists *hists = &pos->hists;

        if (pos->idx == 0)
            hists->symbol_filter_str = rep->symbol_filter_str;

        hists__collapse_resort(hists);
        hists__output_resort(hists);
        nr_samples += hists->stats.nr_events[PERF_RECORD_SAMPLE];
    }

    if (nr_samples == 0) {
        ui__error("The %s file has no samples!\n", session->filename);
        goto out_delete;
    }

    if (use_browser > 0) {
        if (use_browser == 1) {
            perf_evlist__tui_browse_hists(session->evlist, help,
                              NULL, NULL, 0);
        } else if (use_browser == 2) {
            perf_evlist__gtk_browse_hists(session->evlist, help,
                              NULL, NULL, 0);
        }
    } else
        perf_evlist__tty_browse_hists(session->evlist, rep, help);

out_delete:
    /*
     * Speed up the exit process, for large files this can
     * take quite a while.
     *
     * XXX Enable this when using valgrind or if we ever
     * librarize this command.
     *
     * Also experiment with obstacks to see how much speed
     * up we'll get here.
     *
     * perf_session__delete(session);
     */
    return ret;
}

static int
parse_callchain_opt(const struct option *opt, const char *arg, int unset)
{
    struct perf_report *rep = (struct perf_report *)opt->value;
    char *tok, *tok2;
    char *endptr;

    /*
     * --no-call-graph
     */
    if (unset) {
        rep->dont_use_callchains = true;
        return 0;
    }

    symbol_conf.use_callchain = true;

    if (!arg)
        return 0;

    tok = strtok((char *)arg, ",");
    if (!tok)
        return -1;

    /* get the output mode */
    if (!strncmp(tok, "graph", strlen(arg)))
        callchain_param.mode = CHAIN_GRAPH_ABS;

    else if (!strncmp(tok, "flat", strlen(arg)))
        callchain_param.mode = CHAIN_FLAT;

    else if (!strncmp(tok, "fractal", strlen(arg)))
        callchain_param.mode = CHAIN_GRAPH_REL;

    else if (!strncmp(tok, "none", strlen(arg))) {
        callchain_param.mode = CHAIN_NONE;
        symbol_conf.use_callchain = false;

        return 0;
    }

    else
        return -1;

    /* get the min percentage */
    tok = strtok(NULL, ",");
    if (!tok)
        goto setup;

    callchain_param.min_percent = strtod(tok, &endptr);
    if (tok == endptr)
        return -1;

    /* get the print limit */
    tok2 = strtok(NULL, ",");
    if (!tok2)
        goto setup;

    if (tok2[0] != 'c') {
        callchain_param.print_limit = strtoul(tok2, &endptr, 0);
        tok2 = strtok(NULL, ",");
        if (!tok2)
            goto setup;
    }

    /* get the call chain order */
    if (!strcmp(tok2, "caller"))
        callchain_param.order = ORDER_CALLER;
    else if (!strcmp(tok2, "callee"))
        callchain_param.order = ORDER_CALLEE;
    else
        return -1;
setup:
    if (callchain_register_param(&callchain_param) < 0) {
        fprintf(stderr, "Can't register callchain params\n");
        return -1;
    }
    return 0;
}

static int
parse_branch_mode(const struct option *opt __maybe_unused,
          const char *str __maybe_unused, int unset)
{
    sort__branch_mode = !unset;
    return 0;
}

int cmd_report(int argc, const char **argv, const char *prefix __maybe_unused)
{
    struct perf_session *session;
    struct stat st;
    bool has_br_stack = false;
    int ret = -1;
    char callchain_default_opt[] = "fractal,0.5,callee";
    const char * const report_usage[] = {
        "perf report [<options>]",
        NULL
    };
    struct perf_report report = {
        .tool = {
            .sample      = process_sample_event,
            .mmap        = perf_event__process_mmap,
            .comm        = perf_event__process_comm,
            .exit        = perf_event__process_task,
            .fork        = perf_event__process_task,
            .lost        = perf_event__process_lost,
            .read        = process_read_event,
            .attr        = perf_event__process_attr,
            .event_type  = perf_event__process_event_type,
            .tracing_data    = perf_event__process_tracing_data,
            .build_id    = perf_event__process_build_id,
            .ordered_samples = true,
            .ordering_requires_timestamps = true,
        },
        .pretty_printing_style   = "normal",
    };
    const struct option options[] = {
    OPT_STRING('i', "input", &report.input_name, "file",
            "input file name"),
    OPT_INCR('v', "verbose", &verbose,
            "be more verbose (show symbol address, etc)"),
    OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
            "dump raw trace in ASCII"),
    OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
           "file", "vmlinux pathname"),
    OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name,
           "file", "kallsyms pathname"),
    OPT_BOOLEAN('f', "force", &report.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_STRING('s', "sort", &sort_order, "key[,key2...]",
           "sort by key(s): pid, comm, dso, symbol, parent, dso_to,"
           " dso_from, symbol_to, symbol_from, mispredict"),
    OPT_BOOLEAN(0, "showcpuutilization", &symbol_conf.show_cpu_utilization,
            "Show sample percentage for different cpu modes"),
    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", &report, "output_type,min_percent[,print_limit],call_order",
             "Display callchains using output_type (graph, flat, fractal, or none) , min percent threshold, optional print limit and callchain order. "
             "Default: fractal,0.5,callee", &parse_callchain_opt, callchain_default_opt),
    OPT_BOOLEAN('G', "inverted", &report.inverted_callchain,
            "alias for inverted call graph"),
    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('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('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", &report.hide_unresolved,
            "Only display entries resolved to a symbol"),
    OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory",
            "Look for files with symbols relative to this directory"),
    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", &symbol_conf.annotate_src,
            "Interleave source code with assembly code (default)"),
    OPT_BOOLEAN(0, "asm-raw", &symbol_conf.annotate_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_BOOLEAN(0, "show-total-period", &symbol_conf.show_total_period,
            "Show a column with the sum of periods"),
    OPT_CALLBACK_NOOPT('b', "branch-stack", &sort__branch_mode, "",
            "use branch records for histogram filling", parse_branch_mode),
    OPT_STRING(0, "objdump", &objdump_path, "path",
           "objdump binary to use for disassembly and annotations"),
    OPT_END()
    };

    argc = parse_options(argc, argv, options, report_usage, 0);

    if (report.use_stdio)
        use_browser = 0;
    else if (report.use_tui)
        use_browser = 1;
    else if (report.use_gtk)
        use_browser = 2;

    if (report.inverted_callchain)
        callchain_param.order = ORDER_CALLER;

    if (!report.input_name || !strlen(report.input_name)) {
        if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))
            report.input_name = "-";
        else
            report.input_name = "perf.data";
    }
    session = perf_session__new(report.input_name, O_RDONLY,
                    report.force, false, &report.tool);
    if (session == NULL)
        return -ENOMEM;

    report.session = session;

    has_br_stack = perf_header__has_feat(&session->header,
                         HEADER_BRANCH_STACK);

    if (sort__branch_mode == -1 && has_br_stack)
        sort__branch_mode = 1;

    /* sort__branch_mode could be 0 if --no-branch-stack */
    if (sort__branch_mode == 1) {
        /*
         * if no sort_order is provided, then specify
         * branch-mode specific order
         */
        if (sort_order == default_sort_order)
            sort_order = "comm,dso_from,symbol_from,"
                     "dso_to,symbol_to";

    }

    if (strcmp(report.input_name, "-") != 0)
        setup_browser(true);
    else {
        use_browser = 0;
        perf_hpp__init();
    }

    setup_sorting(report_usage, options);

    /*
     * Only in the newt browser we are doing integrated annotation,
     * so don't allocate extra space that won't be used in the stdio
     * implementation.
     */
    if (use_browser == 1 && sort__has_sym) {
        symbol_conf.priv_size = sizeof(struct annotation);
        report.annotate_init  = symbol__annotate_init;
        /*
         * For searching by name on the "Browse map details".
         * providing it only in verbose mode not to bloat too
         * much struct symbol.
         */
        if (verbose) {
            /*
             * 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;
        }
    }

    if (symbol__init() < 0)
        goto error;

    if (parent_pattern != default_parent_pattern) {
        if (sort_dimension__add("parent") < 0)
            goto error;

        /*
         * Only show the parent fields if we explicitly
         * sort that way. If we only use parent machinery
         * for filtering, we don't want it.
         */
        if (!strstr(sort_order, "parent"))
            sort_parent.elide = 1;
    } else
        symbol_conf.exclude_other = false;

    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];
    }

    sort_entry__setup_elide(&sort_comm, symbol_conf.comm_list, "comm", stdout);

    if (sort__branch_mode == 1) {
        sort_entry__setup_elide(&sort_dso_from, symbol_conf.dso_from_list, "dso_from", stdout);
        sort_entry__setup_elide(&sort_dso_to, symbol_conf.dso_to_list, "dso_to", stdout);
        sort_entry__setup_elide(&sort_sym_from, symbol_conf.sym_from_list, "sym_from", stdout);
        sort_entry__setup_elide(&sort_sym_to, symbol_conf.sym_to_list, "sym_to", stdout);
    } else {
        sort_entry__setup_elide(&sort_dso, symbol_conf.dso_list, "dso", stdout);
        sort_entry__setup_elide(&sort_sym, symbol_conf.sym_list, "symbol", stdout);
    }

    ret = __cmd_report(&report);
error:
    perf_session__delete(session);
    return ret;
}