#include <stdlib.h>
#include <stdio.h>
#include <inttypes.h>
#include <linux/string.h>
#include <linux/time64.h>
#include <math.h>
#include <perf/cpumap.h>
#include "color.h"
#include "counts.h"
#include "debug.h"
#include "evlist.h"
#include "evsel.h"
#include "stat.h"
#include "top.h"
#include "thread_map.h"
#include "cpumap.h"
#include "string2.h"
#include <linux/ctype.h>
#include "cgroup.h"
#include <api/fs/fs.h>
#include "util.h"
#include "iostat.h"
#include "pmu.h"
#include "pmus.h"
#include "tool_pmu.h"

#define CNTR_NOT_SUPPORTED      "<not supported>"
#define CNTR_NOT_COUNTED        "<not counted>"

#define MGROUP_LEN   50
#define METRIC_LEN   38
#define EVNAME_LEN   32
#define COUNTS_LEN   18
#define INTERVAL_LEN 16
#define CGROUP_LEN   16
#define COMM_LEN     16
#define PID_LEN       7
#define CPUS_LEN      4

static int aggr_header_lens[] = {
        [AGGR_CORE]     = 18,
        [AGGR_CACHE]    = 22,
        [AGGR_CLUSTER]  = 20,
        [AGGR_DIE]      = 12,
        [AGGR_SOCKET]   = 6,
        [AGGR_NODE]     = 6,
        [AGGR_NONE]     = 6,
        [AGGR_THREAD]   = 16,
        [AGGR_GLOBAL]   = 0,
};

static const char *aggr_header_csv[] = {
        [AGGR_CORE]     =       "core,ctrs,",
        [AGGR_CACHE]    =       "cache,ctrs,",
        [AGGR_CLUSTER]  =       "cluster,ctrs,",
        [AGGR_DIE]      =       "die,ctrs,",
        [AGGR_SOCKET]   =       "socket,ctrs,",
        [AGGR_NONE]     =       "cpu,",
        [AGGR_THREAD]   =       "comm-pid,",
        [AGGR_NODE]     =       "node,",
        [AGGR_GLOBAL]   =       ""
};

static const char *aggr_header_std[] = {
        [AGGR_CORE]     =       "core",
        [AGGR_CACHE]    =       "cache",
        [AGGR_CLUSTER]  =       "cluster",
        [AGGR_DIE]      =       "die",
        [AGGR_SOCKET]   =       "socket",
        [AGGR_NONE]     =       "cpu",
        [AGGR_THREAD]   =       "comm-pid",
        [AGGR_NODE]     =       "node",
        [AGGR_GLOBAL]   =       ""
};

const char *metric_threshold_classify__color(enum metric_threshold_classify thresh)
{
        const char * const colors[] = {
                "", /* unknown */
                PERF_COLOR_RED,     /* bad */
                PERF_COLOR_MAGENTA, /* nearly bad */
                PERF_COLOR_YELLOW,  /* less good */
                PERF_COLOR_GREEN,   /* good */
        };
        static_assert(ARRAY_SIZE(colors) - 1  == METRIC_THRESHOLD_GOOD, "missing enum value");
        return colors[thresh];
}

static const char *metric_threshold_classify__str(enum metric_threshold_classify thresh)
{
        const char * const strs[] = {
                "unknown",
                "bad",
                "nearly bad",
                "less good",
                "good",
        };
        static_assert(ARRAY_SIZE(strs) - 1  == METRIC_THRESHOLD_GOOD, "missing enum value");
        return strs[thresh];
}

static void print_running_std(struct perf_stat_config *config, u64 run, u64 ena)
{
        if (run != ena)
                fprintf(config->output, "  (%.2f%%)", 100.0 * run / ena);
}

static void print_running_csv(struct perf_stat_config *config, u64 run, u64 ena)
{
        double enabled_percent = 100;

        if (run != ena)
                enabled_percent = 100 * run / ena;
        fprintf(config->output, "%s%" PRIu64 "%s%.2f",
                config->csv_sep, run, config->csv_sep, enabled_percent);
}
struct outstate {
        /* Std mode: insert a newline before the next metric */
        bool newline;
        /* JSON mode: track need for comma for a previous field or not */
        bool first;
        /* Num CSV separators remaining to pad out when not all fields are printed */
        int  csv_col_pad;

        /*
         * The following don't track state across fields, but are here as a shortcut to
         * pass data to the print functions. The alternative would be to update the
         * function signatures of the entire print stack to pass them through.
         */
        /* Place to output to */
        FILE * const fh;
        /* Lines are timestamped in --interval-print mode */
        char timestamp[64];
        /* Num items aggregated in current line. See struct perf_stat_aggr.nr */
        int aggr_nr;
        /* Core/socket/die etc ID for the current line */
        struct aggr_cpu_id id;
        /* Event for current line */
        struct evsel *evsel;
        /* Cgroup for current line */
        struct cgroup *cgrp;
};

static const char *json_sep(struct outstate *os)
{
        const char *sep = os->first ? "" : ", ";

        os->first = false;
        return sep;
}

#define json_out(os, format, ...) fprintf((os)->fh, "%s" format, json_sep(os), ##__VA_ARGS__)

static void print_running_json(struct outstate *os, u64 run, u64 ena)
{
        double enabled_percent = 100;

        if (run != ena)
                enabled_percent = 100 * run / ena;
        json_out(os, "\"event-runtime\" : %" PRIu64 ", \"pcnt-running\" : %.2f",
                 run, enabled_percent);
}

static void print_running(struct perf_stat_config *config, struct outstate *os,
                          u64 run, u64 ena, bool before_metric)
{
        if (config->json_output) {
                if (before_metric)
                        print_running_json(os, run, ena);
        } else if (config->csv_output) {
                if (before_metric)
                        print_running_csv(config, run, ena);
        } else {
                if (!before_metric)
                        print_running_std(config, run, ena);
        }
}

static void print_noise_pct_std(struct perf_stat_config *config,
                                double pct)
{
        if (pct)
                fprintf(config->output, "  ( +-%6.2f%% )", pct);
}

static void print_noise_pct_csv(struct perf_stat_config *config,
                                double pct)
{
        fprintf(config->output, "%s%.2f%%", config->csv_sep, pct);
}

static void print_noise_pct_json(struct outstate *os,
                                 double pct)
{
        json_out(os, "\"variance\" : %.2f", pct);
}

static void print_noise_pct(struct perf_stat_config *config, struct outstate *os,
                            double total, double avg, bool before_metric)
{
        double pct = rel_stddev_stats(total, avg);

        if (config->json_output) {
                if (before_metric)
                        print_noise_pct_json(os, pct);
        } else if (config->csv_output) {
                if (before_metric)
                        print_noise_pct_csv(config, pct);
        } else {
                if (!before_metric)
                        print_noise_pct_std(config, pct);
        }
}

static void print_noise(struct perf_stat_config *config, struct outstate *os,
                        struct evsel *evsel, double avg, bool before_metric)
{
        struct perf_stat_evsel *ps;

        if (config->run_count == 1)
                return;

        ps = evsel->stats;
        print_noise_pct(config, os, stddev_stats(&ps->res_stats), avg, before_metric);
}

static void print_cgroup_std(struct perf_stat_config *config, const char *cgrp_name)
{
        fprintf(config->output, " %-*s", CGROUP_LEN, cgrp_name);
}

static void print_cgroup_csv(struct perf_stat_config *config, const char *cgrp_name)
{
        fprintf(config->output, "%s%s", config->csv_sep, cgrp_name);
}

static void print_cgroup_json(struct outstate *os, const char *cgrp_name)
{
        json_out(os, "\"cgroup\" : \"%s\"", cgrp_name);
}

static void print_cgroup(struct perf_stat_config *config, struct outstate *os,
                         struct cgroup *cgrp)
{
        if (nr_cgroups || config->cgroup_list) {
                const char *cgrp_name = cgrp ? cgrp->name  : "";

                if (config->json_output)
                        print_cgroup_json(os, cgrp_name);
                else if (config->csv_output)
                        print_cgroup_csv(config, cgrp_name);
                else
                        print_cgroup_std(config, cgrp_name);
        }
}

static void print_aggr_id_std(struct perf_stat_config *config,
                              struct evsel *evsel, struct aggr_cpu_id id, int aggr_nr)
{
        FILE *output = config->output;
        int idx = config->aggr_mode;
        char buf[128];

        switch (config->aggr_mode) {
        case AGGR_CORE:
                snprintf(buf, sizeof(buf), "S%d-D%d-C%d", id.socket, id.die, id.core);
                break;
        case AGGR_CACHE:
                snprintf(buf, sizeof(buf), "S%d-D%d-L%d-ID%d",
                         id.socket, id.die, id.cache_lvl, id.cache);
                break;
        case AGGR_CLUSTER:
                snprintf(buf, sizeof(buf), "S%d-D%d-CLS%d", id.socket, id.die, id.cluster);
                break;
        case AGGR_DIE:
                snprintf(buf, sizeof(buf), "S%d-D%d", id.socket, id.die);
                break;
        case AGGR_SOCKET:
                snprintf(buf, sizeof(buf), "S%d", id.socket);
                break;
        case AGGR_NODE:
                snprintf(buf, sizeof(buf), "N%d", id.node);
                break;
        case AGGR_NONE:
                if (evsel->percore && !config->percore_show_thread) {
                        snprintf(buf, sizeof(buf), "S%d-D%d-C%d ",
                                id.socket, id.die, id.core);
                        fprintf(output, "%-*s ",
                                aggr_header_lens[AGGR_CORE], buf);
                } else if (id.cpu.cpu > -1) {
                        fprintf(output, "CPU%-*d ",
                                aggr_header_lens[AGGR_NONE] - 3, id.cpu.cpu);
                }
                return;
        case AGGR_THREAD:
                fprintf(output, "%*s-%-*d ",
                        COMM_LEN, perf_thread_map__comm(evsel->core.threads, id.thread_idx),
                        PID_LEN, perf_thread_map__pid(evsel->core.threads, id.thread_idx));
                return;
        case AGGR_GLOBAL:
        case AGGR_UNSET:
        case AGGR_MAX:
        default:
                return;
        }

        fprintf(output, "%-*s %*d ", aggr_header_lens[idx], buf, /*strlen("ctrs")*/ 4, aggr_nr);
}

static void print_aggr_id_csv(struct perf_stat_config *config,
                              struct evsel *evsel, struct aggr_cpu_id id, int aggr_nr)
{
        FILE *output = config->output;
        const char *sep = config->csv_sep;

        switch (config->aggr_mode) {
        case AGGR_CORE:
                fprintf(output, "S%d-D%d-C%d%s%d%s",
                        id.socket, id.die, id.core, sep, aggr_nr, sep);
                break;
        case AGGR_CACHE:
                fprintf(config->output, "S%d-D%d-L%d-ID%d%s%d%s",
                        id.socket, id.die, id.cache_lvl, id.cache, sep, aggr_nr, sep);
                break;
        case AGGR_CLUSTER:
                fprintf(config->output, "S%d-D%d-CLS%d%s%d%s",
                        id.socket, id.die, id.cluster, sep, aggr_nr, sep);
                break;
        case AGGR_DIE:
                fprintf(output, "S%d-D%d%s%d%s",
                        id.socket, id.die, sep, aggr_nr, sep);
                break;
        case AGGR_SOCKET:
                fprintf(output, "S%d%s%d%s",
                        id.socket, sep, aggr_nr, sep);
                break;
        case AGGR_NODE:
                fprintf(output, "N%d%s%d%s",
                        id.node, sep, aggr_nr, sep);
                break;
        case AGGR_NONE:
                if (evsel->percore && !config->percore_show_thread) {
                        fprintf(output, "S%d-D%d-C%d%s",
                                id.socket, id.die, id.core, sep);
                } else if (id.cpu.cpu > -1) {
                        fprintf(output, "CPU%d%s",
                                id.cpu.cpu, sep);
                }
                break;
        case AGGR_THREAD:
                fprintf(output, "%s-%d%s",
                        perf_thread_map__comm(evsel->core.threads, id.thread_idx),
                        perf_thread_map__pid(evsel->core.threads, id.thread_idx),
                        sep);
                break;
        case AGGR_GLOBAL:
        case AGGR_UNSET:
        case AGGR_MAX:
        default:
                break;
        }
}

static void print_aggr_id_json(struct perf_stat_config *config, struct outstate *os,
                               struct evsel *evsel, struct aggr_cpu_id id, int aggr_nr)
{
        switch (config->aggr_mode) {
        case AGGR_CORE:
                json_out(os, "\"core\" : \"S%d-D%d-C%d\", \"counters\" : %d",
                        id.socket, id.die, id.core, aggr_nr);
                break;
        case AGGR_CACHE:
                json_out(os, "\"cache\" : \"S%d-D%d-L%d-ID%d\", \"counters\" : %d",
                        id.socket, id.die, id.cache_lvl, id.cache, aggr_nr);
                break;
        case AGGR_CLUSTER:
                json_out(os, "\"cluster\" : \"S%d-D%d-CLS%d\", \"counters\" : %d",
                        id.socket, id.die, id.cluster, aggr_nr);
                break;
        case AGGR_DIE:
                json_out(os, "\"die\" : \"S%d-D%d\", \"counters\" : %d",
                        id.socket, id.die, aggr_nr);
                break;
        case AGGR_SOCKET:
                json_out(os, "\"socket\" : \"S%d\", \"counters\" : %d",
                        id.socket, aggr_nr);
                break;
        case AGGR_NODE:
                json_out(os, "\"node\" : \"N%d\", \"counters\" : %d",
                        id.node, aggr_nr);
                break;
        case AGGR_NONE:
                if (evsel->percore && !config->percore_show_thread) {
                        json_out(os, "\"core\" : \"S%d-D%d-C%d\"",
                                id.socket, id.die, id.core);
                } else if (id.cpu.cpu > -1) {
                        json_out(os, "\"cpu\" : \"%d\"",
                                id.cpu.cpu);
                }
                break;
        case AGGR_THREAD:
                json_out(os, "\"thread\" : \"%s-%d\"",
                        perf_thread_map__comm(evsel->core.threads, id.thread_idx),
                        perf_thread_map__pid(evsel->core.threads, id.thread_idx));
                break;
        case AGGR_GLOBAL:
        case AGGR_UNSET:
        case AGGR_MAX:
        default:
                break;
        }
}

static void aggr_printout(struct perf_stat_config *config, struct outstate *os,
                          struct evsel *evsel, struct aggr_cpu_id id, int aggr_nr)
{
        if (config->json_output)
                print_aggr_id_json(config, os, evsel, id, aggr_nr);
        else if (config->csv_output)
                print_aggr_id_csv(config, evsel, id, aggr_nr);
        else
                print_aggr_id_std(config, evsel, id, aggr_nr);
}

static void new_line_std(struct perf_stat_config *config __maybe_unused,
                         void *ctx)
{
        struct outstate *os = ctx;

        os->newline = true;
}

static inline void __new_line_std_csv(struct perf_stat_config *config,
                                      struct outstate *os)
{
        fputc('\n', os->fh);
        if (config->interval)
                fputs(os->timestamp, os->fh);
        aggr_printout(config, os, os->evsel, os->id, os->aggr_nr);
}

static inline void __new_line_std(struct perf_stat_config *config, struct outstate *os)
{
        fprintf(os->fh, "%*s", COUNTS_LEN + EVNAME_LEN + config->unit_width + 2, "");
}

static void do_new_line_std(struct perf_stat_config *config,
                            struct outstate *os)
{
        __new_line_std_csv(config, os);
        if (config->aggr_mode == AGGR_NONE)
                fprintf(os->fh, "        ");
        __new_line_std(config, os);
}

static void print_metric_std(struct perf_stat_config *config,
                             void *ctx, enum metric_threshold_classify thresh,
                             const char *fmt, const char *unit, double val)
{
        struct outstate *os = ctx;
        FILE *out = os->fh;
        int n;
        bool newline = os->newline;
        const char *color = metric_threshold_classify__color(thresh);

        os->newline = false;

        if (unit == NULL || fmt == NULL) {
                fprintf(out, "%-*s", METRIC_LEN, "");
                return;
        }

        if (newline)
                do_new_line_std(config, os);

        n = fprintf(out, " # ");
        if (color)
                n += color_fprintf(out, color, fmt, val);
        else
                n += fprintf(out, fmt, val);
        fprintf(out, " %-*s", METRIC_LEN - n - 1, unit);
}

static void new_line_csv(struct perf_stat_config *config, void *ctx)
{
        struct outstate *os = ctx;
        int i;

        __new_line_std_csv(config, os);
        for (i = 0; i < os->csv_col_pad; i++)
                fputs(config->csv_sep, os->fh);
}

static void print_metric_csv(struct perf_stat_config *config __maybe_unused,
                             void *ctx,
                             enum metric_threshold_classify thresh __maybe_unused,
                             const char *fmt, const char *unit, double val)
{
        struct outstate *os = ctx;
        FILE *out = os->fh;
        char buf[64], *vals, *ends;

        if (unit == NULL || fmt == NULL) {
                fprintf(out, "%s%s", config->csv_sep, config->csv_sep);
                return;
        }
        snprintf(buf, sizeof(buf), fmt, val);
        ends = vals = skip_spaces(buf);
        while (isdigit(*ends) || *ends == '.')
                ends++;
        *ends = 0;
        fprintf(out, "%s%s%s%s", config->csv_sep, vals, config->csv_sep, skip_spaces(unit));
}

static void print_metric_json(struct perf_stat_config *config __maybe_unused,
                             void *ctx,
                             enum metric_threshold_classify thresh,
                             const char *fmt __maybe_unused,
                             const char *unit, double val)
{
        struct outstate *os = ctx;
        FILE *out = os->fh;

        if (unit) {
                json_out(os, "\"metric-value\" : \"%f\", \"metric-unit\" : \"%s\"", val, unit);
                if (thresh != METRIC_THRESHOLD_UNKNOWN) {
                        json_out(os, "\"metric-threshold\" : \"%s\"",
                                metric_threshold_classify__str(thresh));
                }
        }
        if (!config->metric_only)
                fprintf(out, "}");
}

static void new_line_json(struct perf_stat_config *config, void *ctx)
{
        struct outstate *os = ctx;

        fputs("\n{", os->fh);
        os->first = true;
        if (config->interval)
                json_out(os, "%s", os->timestamp);

        aggr_printout(config, os, os->evsel, os->id, os->aggr_nr);
}

static void print_metricgroup_header_json(struct perf_stat_config *config,
                                          void *ctx,
                                          const char *metricgroup_name)
{
        if (!metricgroup_name)
                return;

        json_out((struct outstate *) ctx, "\"metricgroup\" : \"%s\"}", metricgroup_name);
        new_line_json(config, ctx);
}

static void print_metricgroup_header_csv(struct perf_stat_config *config,
                                         void *ctx,
                                         const char *metricgroup_name)
{
        struct outstate *os = ctx;
        int i;

        if (!metricgroup_name) {
                /* Leave space for running and enabling */
                for (i = 0; i < os->csv_col_pad - 2; i++)
                        fputs(config->csv_sep, os->fh);
                return;
        }

        for (i = 0; i < os->csv_col_pad; i++)
                fputs(config->csv_sep, os->fh);
        fprintf(config->output, "%s", metricgroup_name);
        new_line_csv(config, ctx);
}

static void print_metricgroup_header_std(struct perf_stat_config *config,
                                         void *ctx,
                                         const char *metricgroup_name)
{
        struct outstate *os = ctx;
        int n;

        if (!metricgroup_name) {
                __new_line_std(config, os);
                return;
        }

        n = fprintf(config->output, " %*s", EVNAME_LEN, metricgroup_name);

        fprintf(config->output, "%*s", MGROUP_LEN + config->unit_width + 2 - n, "");
}

static void print_metric_only(struct perf_stat_config *config,
                              void *ctx, enum metric_threshold_classify thresh,
                              const char *fmt, const char *unit, double val)
{
        struct outstate *os = ctx;
        FILE *out = os->fh;
        char str[1024];
        unsigned mlen = config->metric_only_len;
        const char *color = metric_threshold_classify__color(thresh);

        if (!unit)
                unit = "";
        if (mlen < strlen(unit))
                mlen = strlen(unit) + 1;

        if (color)
                mlen += strlen(color) + sizeof(PERF_COLOR_RESET) - 1;

        color_snprintf(str, sizeof(str), color ?: "", fmt ?: "", val);
        fprintf(out, "%*s ", mlen, str);
        os->first = false;
}

static void print_metric_only_csv(struct perf_stat_config *config __maybe_unused,
                                  void *ctx,
                                  enum metric_threshold_classify thresh __maybe_unused,
                                  const char *fmt,
                                  const char *unit __maybe_unused, double val)
{
        struct outstate *os = ctx;
        FILE *out = os->fh;
        char buf[64], *vals, *ends;

        if (!unit)
                return;

        snprintf(buf, sizeof(buf), fmt ?: "", val);
        ends = vals = skip_spaces(buf);
        while (isdigit(*ends) || *ends == '.')
                ends++;
        *ends = 0;
        fprintf(out, "%s%s", vals, config->csv_sep);
        os->first = false;
}

static void print_metric_only_json(struct perf_stat_config *config __maybe_unused,
                                  void *ctx,
                                  enum metric_threshold_classify thresh __maybe_unused,
                                  const char *fmt,
                                  const char *unit, double val)
{
        struct outstate *os = ctx;
        char buf[64], *ends;
        const char *vals;

        if (!unit || !unit[0])
                return;
        snprintf(buf, sizeof(buf), fmt ?: "", val);
        vals = ends = skip_spaces(buf);
        while (isdigit(*ends) || *ends == '.')
                ends++;
        *ends = 0;
        if (!vals[0])
                vals = "none";
        json_out(os, "\"%s\" : \"%s\"", unit, vals);
}

static void print_metric_header(struct perf_stat_config *config,
                                void *ctx,
                                enum metric_threshold_classify thresh __maybe_unused,
                                const char *fmt __maybe_unused,
                                const char *unit, double val __maybe_unused)
{
        struct outstate *os = ctx;

        /* In case of iostat, print metric header for first root port only */
        if (config->iostat_run &&
            os->evsel->priv != os->evsel->evlist->selected->priv)
                return;

        if (os->evsel->cgrp != os->cgrp)
                return;

        if (!unit)
                return;

        if (config->json_output)
                return;
        else if (config->csv_output)
                fprintf(os->fh, "%s%s", unit, config->csv_sep);
        else
                fprintf(os->fh, "%*s ", config->metric_only_len, unit);
}

static void print_counter_value_std(struct perf_stat_config *config,
                                    struct evsel *evsel, double avg, bool ok)
{
        FILE *output = config->output;
        double sc =  evsel->scale;
        const char *fmt;
        const char *bad_count = evsel->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED;

        if (config->big_num)
                fmt = floor(sc) != sc ? "%'*.2f " : "%'*.0f ";
        else
                fmt = floor(sc) != sc ? "%*.2f " : "%*.0f ";

        if (ok)
                fprintf(output, fmt, COUNTS_LEN, avg);
        else
                fprintf(output, "%*s ", COUNTS_LEN, bad_count);

        if (evsel->unit)
                fprintf(output, "%-*s ", config->unit_width, evsel->unit);

        fprintf(output, "%-*s", EVNAME_LEN, evsel__name(evsel));
}

static void print_counter_value_csv(struct perf_stat_config *config,
                                    struct evsel *evsel, double avg, bool ok)
{
        FILE *output = config->output;
        double sc =  evsel->scale;
        const char *sep = config->csv_sep;
        const char *fmt = floor(sc) != sc ? "%.2f%s" : "%.0f%s";
        const char *bad_count = evsel->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED;

        if (ok)
                fprintf(output, fmt, avg, sep);
        else
                fprintf(output, "%s%s", bad_count, sep);

        if (evsel->unit)
                fprintf(output, "%s%s", evsel->unit, sep);

        fprintf(output, "%s", evsel__name(evsel));
}

static void print_counter_value_json(struct outstate *os,
                                     struct evsel *evsel, double avg, bool ok)
{
        const char *bad_count = evsel->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED;

        if (ok)
                json_out(os, "\"counter-value\" : \"%f\"", avg);
        else
                json_out(os, "\"counter-value\" : \"%s\"", bad_count);

        if (evsel->unit)
                json_out(os, "\"unit\" : \"%s\"", evsel->unit);

        json_out(os, "\"event\" : \"%s\"", evsel__name(evsel));
}

static void print_counter_value(struct perf_stat_config *config, struct outstate *os,
                                struct evsel *evsel, double avg, bool ok)
{
        if (config->json_output)
                print_counter_value_json(os, evsel, avg, ok);
        else if (config->csv_output)
                print_counter_value_csv(config, evsel, avg, ok);
        else
                print_counter_value_std(config, evsel, avg, ok);
}

static void abs_printout(struct perf_stat_config *config,
                         struct outstate *os,
                         struct aggr_cpu_id id, int aggr_nr,
                         struct evsel *evsel, double avg, bool ok)
{
        aggr_printout(config, os, evsel, id, aggr_nr);
        print_counter_value(config, os, evsel, avg, ok);
        print_cgroup(config, os, evsel->cgrp);
}

static bool evlist__has_hybrid_pmus(struct evlist *evlist)
{
        struct evsel *evsel;
        struct perf_pmu *last_core_pmu = NULL;

        if (perf_pmus__num_core_pmus() == 1)
                return false;

        evlist__for_each_entry(evlist, evsel) {
                if (evsel->core.is_pmu_core) {
                        struct perf_pmu *pmu = evsel__find_pmu(evsel);

                        if (pmu == last_core_pmu)
                                continue;

                        if (last_core_pmu == NULL) {
                                last_core_pmu = pmu;
                                continue;
                        }
                        /* A distinct core PMU. */
                        return true;
                }
        }

        return false;
}

static void printout(struct perf_stat_config *config, struct outstate *os,
                     double uval, u64 run, u64 ena, double noise, int aggr_idx)
{
        struct perf_stat_output_ctx out;
        print_metric_t pm;
        new_line_t nl;
        print_metricgroup_header_t pmh;
        bool ok = true;
        struct evsel *counter = os->evsel;

        if (config->csv_output) {
                pm = config->metric_only ? print_metric_only_csv : print_metric_csv;
                nl = config->metric_only ? NULL : new_line_csv;
                pmh = print_metricgroup_header_csv;
                os->csv_col_pad = 4 + (counter->cgrp ? 1 : 0);
        } else if (config->json_output) {
                pm = config->metric_only ? print_metric_only_json : print_metric_json;
                nl = config->metric_only ? NULL : new_line_json;
                pmh = print_metricgroup_header_json;
        } else {
                pm = config->metric_only ? print_metric_only : print_metric_std;
                nl = config->metric_only ? NULL : new_line_std;
                pmh = print_metricgroup_header_std;
        }

        if (run == 0 || ena == 0 || counter->counts->scaled == -1) {
                ok = false;

                if (counter->supported) {
                        if (!evlist__has_hybrid_pmus(counter->evlist)) {
                                config->print_free_counters_hint = 1;
                        }
                }
        }

        out.print_metric = pm;
        out.new_line = nl;
        out.print_metricgroup_header = pmh;
        out.ctx = os;
        out.force_header = false;

        if (!config->metric_only && (!counter->default_metricgroup || counter->default_show_events)) {
                abs_printout(config, os, os->id, os->aggr_nr, counter, uval, ok);

                print_noise(config, os, counter, noise, /*before_metric=*/true);
                print_running(config, os, run, ena, /*before_metric=*/true);
        }

        if (!config->metric_only && counter->default_metricgroup &&
            !counter->default_show_events) {
                void *from = NULL;

                aggr_printout(config, os, os->evsel, os->id, os->aggr_nr);
                /* Print out all the metricgroup with the same metric event. */
                do {
                        int num = 0;

                        /* Print out the new line for the next new metricgroup. */
                        if (from) {
                                if (config->json_output)
                                        new_line_json(config, (void *)os);
                                else
                                        __new_line_std_csv(config, os);
                        }

                        print_noise(config, os, counter, noise,
                                    /*before_metric=*/true);
                        print_running(config, os, run, ena,
                                      /*before_metric=*/true);
                        from = perf_stat__print_shadow_stats_metricgroup(
                                config, counter, aggr_idx, &num, from, &out);
                } while (from != NULL);
        } else {
                perf_stat__print_shadow_stats(config, counter, aggr_idx, &out);
        }

        if (!config->metric_only) {
                print_noise(config, os, counter, noise, /*before_metric=*/false);
                print_running(config, os, run, ena, /*before_metric=*/false);
        }
}

/**
 * should_skip_zero_count() - Check if the event should print 0 values.
 * @config: The perf stat configuration (including aggregation mode).
 * @counter: The evsel with its associated cpumap.
 * @id: The aggregation id that is being queried.
 *
 * Due to mismatch between the event cpumap or thread-map and the
 * aggregation mode, sometimes it'd iterate the counter with the map
 * which does not contain any values.
 *
 * For example, uncore events have dedicated CPUs to manage them,
 * result for other CPUs should be zero and skipped.
 *
 * Return: %true if the value should NOT be printed, %false if the value
 * needs to be printed like "<not counted>" or "<not supported>".
 */
static bool should_skip_zero_counter(struct perf_stat_config *config,
                                     struct evsel *counter,
                                     const struct aggr_cpu_id *id)
{
        struct perf_cpu cpu;
        int idx;

        /*
         * Skip unsupported default events when not verbose. (default events
         * are all marked 'skippable').
         */
        if (verbose == 0 && counter->skippable && !counter->supported)
                return true;

        /* Metric only counts won't be displayed but the metric wants to be computed. */
        if (config->metric_only)
                return false;
        /*
         * Skip value 0 when enabling --per-thread globally,
         * otherwise it will have too many 0 output.
         */
        if (config->aggr_mode == AGGR_THREAD && config->system_wide)
                return true;

        /*
         * In per-thread mode the aggr_map and aggr_get_id functions may be
         * NULL, assume all 0 values should be output in that case.
         */
        if (!config->aggr_map || !config->aggr_get_id)
                return false;

        /*
         * Tool events may be gathered on all logical CPUs, for example
         * system_time, but for many the first index is the only one used, for
         * example num_cores. Don't skip for the first index.
         */
        if (evsel__is_tool(counter)) {
                struct aggr_cpu_id own_id =
                        config->aggr_get_id(config, (struct perf_cpu){ .cpu = 0 });

                return !aggr_cpu_id__equal(id, &own_id);
        }
        /*
         * Skip value 0 when the counter's cpumask doesn't match the given aggr
         * id.
         */

        perf_cpu_map__for_each_cpu(cpu, idx, counter->core.cpus) {
                struct aggr_cpu_id own_id = config->aggr_get_id(config, cpu);

                if (aggr_cpu_id__equal(id, &own_id))
                        return false;
        }
        return true;
}

static void print_counter_aggrdata(struct perf_stat_config *config,
                                   struct evsel *counter, int aggr_idx,
                                   struct outstate *os)
{
        FILE *output = config->output;
        u64 ena, run, val;
        double uval;
        struct perf_stat_evsel *ps = counter->stats;
        struct perf_stat_aggr *aggr = &ps->aggr[aggr_idx];
        struct aggr_cpu_id id = config->aggr_map->map[aggr_idx];
        double avg = aggr->counts.val;
        bool metric_only = config->metric_only;

        os->id = id;
        os->aggr_nr = aggr->nr;
        os->evsel = counter;

        /* Skip already merged uncore/hybrid events */
        if (config->aggr_mode != AGGR_NONE) {
                if (evsel__is_hybrid(counter)) {
                        if (config->hybrid_merge && counter->first_wildcard_match != NULL)
                                return;
                } else {
                        if (counter->first_wildcard_match != NULL)
                                return;
                }
        }

        val = aggr->counts.val;
        ena = aggr->counts.ena;
        run = aggr->counts.run;

        if (perf_stat__skip_metric_event(counter))
                return;

        if (val == 0 && should_skip_zero_counter(config, counter, &id))
                return;

        if (!metric_only) {
                if (config->json_output) {
                        os->first = true;
                        fputc('{', output);
                }
                if (config->interval) {
                        if (config->json_output)
                                json_out(os, "%s", os->timestamp);
                        else
                                fprintf(output, "%s", os->timestamp);
                } else if (config->summary && config->csv_output &&
                           !config->no_csv_summary)
                        fprintf(output, "%s%s", "summary", config->csv_sep);
        }

        uval = val * counter->scale;

        printout(config, os, uval, run, ena, avg, aggr_idx);

        if (!metric_only)
                fputc('\n', output);
}

static void print_metric_begin(struct perf_stat_config *config,
                               struct evlist *evlist,
                               struct outstate *os, int aggr_idx)
{
        struct perf_stat_aggr *aggr;
        struct aggr_cpu_id id;
        struct evsel *evsel;

        os->first = true;
        if (!config->metric_only)
                return;

        if (config->json_output)
                fputc('{', config->output);

        if (config->interval) {
                if (config->json_output)
                        json_out(os, "%s", os->timestamp);
                else
                        fprintf(config->output, "%s", os->timestamp);
        }
        evsel = evlist__first(evlist);
        id = config->aggr_map->map[aggr_idx];
        aggr = &evsel->stats->aggr[aggr_idx];
        aggr_printout(config, os, evsel, id, aggr->nr);

        print_cgroup(config, os, os->cgrp ? : evsel->cgrp);
}

static void print_metric_end(struct perf_stat_config *config, struct outstate *os)
{
        FILE *output = config->output;

        if (!config->metric_only)
                return;

        if (config->json_output) {
                if (os->first)
                        fputs("\"metric-value\" : \"none\"", output);
                fputc('}', output);
        }
        fputc('\n', output);
}

static void print_aggr(struct perf_stat_config *config,
                       struct evlist *evlist,
                       struct outstate *os)
{
        struct evsel *counter;
        int aggr_idx;

        if (!config->aggr_map || !config->aggr_get_id)
                return;

        /*
         * With metric_only everything is on a single line.
         * Without each counter has its own line.
         */
        cpu_aggr_map__for_each_idx(aggr_idx, config->aggr_map) {
                print_metric_begin(config, evlist, os, aggr_idx);

                evlist__for_each_entry(evlist, counter) {
                        print_counter_aggrdata(config, counter, aggr_idx, os);
                }
                print_metric_end(config, os);
        }
}

static void print_aggr_cgroup(struct perf_stat_config *config,
                              struct evlist *evlist,
                              struct outstate *os)
{
        struct evsel *counter, *evsel;
        int aggr_idx;

        if (!config->aggr_map || !config->aggr_get_id)
                return;

        evlist__for_each_entry(evlist, evsel) {
                if (os->cgrp == evsel->cgrp)
                        continue;

                os->cgrp = evsel->cgrp;

                cpu_aggr_map__for_each_idx(aggr_idx, config->aggr_map) {
                        print_metric_begin(config, evlist, os, aggr_idx);

                        evlist__for_each_entry(evlist, counter) {
                                if (counter->cgrp != os->cgrp)
                                        continue;

                                print_counter_aggrdata(config, counter, aggr_idx, os);
                        }
                        print_metric_end(config, os);
                }
        }
}

static void print_counter(struct perf_stat_config *config,
                          struct evsel *counter, struct outstate *os)
{
        int aggr_idx;

        /* AGGR_THREAD doesn't have config->aggr_get_id */
        if (!config->aggr_map)
                return;

        cpu_aggr_map__for_each_idx(aggr_idx, config->aggr_map) {
                print_counter_aggrdata(config, counter, aggr_idx, os);
        }
}

static void print_no_aggr_metric(struct perf_stat_config *config,
                                 struct evlist *evlist,
                                 struct outstate *os)
{
        int all_idx;
        struct perf_cpu cpu;

        perf_cpu_map__for_each_cpu(cpu, all_idx, evlist->core.user_requested_cpus) {
                struct evsel *counter;
                bool first = true;

                evlist__for_each_entry(evlist, counter) {
                        u64 ena, run, val;
                        double uval;
                        struct perf_stat_evsel *ps = counter->stats;
                        int aggr_idx = 0;

                        if (!perf_cpu_map__has(evsel__cpus(counter), cpu))
                                continue;

                        cpu_aggr_map__for_each_idx(aggr_idx, config->aggr_map) {
                                if (config->aggr_map->map[aggr_idx].cpu.cpu == cpu.cpu)
                                        break;
                        }

                        os->evsel = counter;
                        os->id = aggr_cpu_id__cpu(cpu, /*data=*/NULL);
                        if (first) {
                                print_metric_begin(config, evlist, os, aggr_idx);
                                first = false;
                        }
                        val = ps->aggr[aggr_idx].counts.val;
                        ena = ps->aggr[aggr_idx].counts.ena;
                        run = ps->aggr[aggr_idx].counts.run;

                        uval = val * counter->scale;
                        printout(config, os, uval, run, ena, 1.0, aggr_idx);
                }
                if (!first)
                        print_metric_end(config, os);
        }
}

static void print_metric_headers_std(struct perf_stat_config *config,
                                     bool no_indent)
{
        fputc(' ', config->output);

        if (!no_indent) {
                int len = aggr_header_lens[config->aggr_mode];

                if (nr_cgroups || config->cgroup_list)
                        len += CGROUP_LEN + 1;

                fprintf(config->output, "%*s", len, "");
        }
}

static void print_metric_headers_csv(struct perf_stat_config *config,
                                     bool no_indent __maybe_unused)
{
        const char *p;

        if (config->interval)
                fprintf(config->output, "time%s", config->csv_sep);
        if (config->iostat_run)
                return;

        p = aggr_header_csv[config->aggr_mode];
        while (*p) {
                if (*p == ',')
                        fputs(config->csv_sep, config->output);
                else
                        fputc(*p, config->output);
                p++;
        }
}

static void print_metric_headers_json(struct perf_stat_config *config __maybe_unused,
                                      bool no_indent __maybe_unused)
{
}

static void print_metric_headers(struct perf_stat_config *config,
                                 struct evlist *evlist, bool no_indent)
{
        struct evsel *counter;
        struct outstate os = {
                .fh = config->output
        };
        struct perf_stat_output_ctx out = {
                .ctx = &os,
                .print_metric = print_metric_header,
                .new_line = NULL,
                .force_header = true,
        };

        if (config->json_output)
                print_metric_headers_json(config, no_indent);
        else if (config->csv_output)
                print_metric_headers_csv(config, no_indent);
        else
                print_metric_headers_std(config, no_indent);

        if (config->iostat_run)
                iostat_print_header_prefix(config);

        if (config->cgroup_list)
                os.cgrp = evlist__first(evlist)->cgrp;

        /* Print metrics headers only */
        evlist__for_each_entry(evlist, counter) {
                if (!config->iostat_run &&
                    config->aggr_mode != AGGR_NONE && counter->metric_leader != counter)
                        continue;

                os.evsel = counter;

                perf_stat__print_shadow_stats(config, counter, /*aggr_idx=*/0, &out);
        }

        if (!config->json_output)
                fputc('\n', config->output);
}

static void prepare_timestamp(struct perf_stat_config *config,
                              struct outstate *os, struct timespec *ts)
{
        if (config->iostat_run)
                return;

        if (config->json_output)
                scnprintf(os->timestamp, sizeof(os->timestamp), "\"interval\" : %lu.%09lu",
                          (unsigned long) ts->tv_sec, ts->tv_nsec);
        else if (config->csv_output)
                scnprintf(os->timestamp, sizeof(os->timestamp), "%lu.%09lu%s",
                          (unsigned long) ts->tv_sec, ts->tv_nsec, config->csv_sep);
        else
                scnprintf(os->timestamp, sizeof(os->timestamp), "%6lu.%09lu ",
                          (unsigned long) ts->tv_sec, ts->tv_nsec);
}

static void print_header_interval_std(struct perf_stat_config *config,
                                      struct target *_target __maybe_unused,
                                      struct evlist *evlist,
                                      int argc __maybe_unused,
                                      const char **argv __maybe_unused)
{
        FILE *output = config->output;

        switch (config->aggr_mode) {
        case AGGR_NODE:
        case AGGR_SOCKET:
        case AGGR_DIE:
        case AGGR_CLUSTER:
        case AGGR_CACHE:
        case AGGR_CORE:
                fprintf(output, "#%*s %-*s ctrs",
                        INTERVAL_LEN - 1, "time",
                        aggr_header_lens[config->aggr_mode],
                        aggr_header_std[config->aggr_mode]);
                break;
        case AGGR_NONE:
                fprintf(output, "#%*s %-*s",
                        INTERVAL_LEN - 1, "time",
                        aggr_header_lens[config->aggr_mode],
                        aggr_header_std[config->aggr_mode]);
                break;
        case AGGR_THREAD:
                fprintf(output, "#%*s %*s-%-*s",
                        INTERVAL_LEN - 1, "time",
                        COMM_LEN, "comm", PID_LEN, "pid");
                break;
        case AGGR_GLOBAL:
        default:
                if (!config->iostat_run)
                        fprintf(output, "#%*s",
                                INTERVAL_LEN - 1, "time");
        case AGGR_UNSET:
        case AGGR_MAX:
                break;
        }

        if (config->metric_only)
                print_metric_headers(config, evlist, true);
        else
                fprintf(output, " %*s %*s events\n",
                        COUNTS_LEN, "counts", config->unit_width, "unit");
}

static void print_header_std(struct perf_stat_config *config,
                             struct target *_target, struct evlist *evlist,
                             int argc, const char **argv)
{
        FILE *output = config->output;
        int i;

        fprintf(output, "\n");
        fprintf(output, " Performance counter stats for ");
        if (_target->bpf_str)
                fprintf(output, "\'BPF program(s) %s", _target->bpf_str);
        else if (_target->system_wide)
                fprintf(output, "\'system wide");
        else if (_target->cpu_list)
                fprintf(output, "\'CPU(s) %s", _target->cpu_list);
        else if (!target__has_task(_target)) {
                fprintf(output, "\'%s", argv ? argv[0] : "pipe");
                for (i = 1; argv && (i < argc); i++)
                        fprintf(output, " %s", argv[i]);
        } else if (_target->pid)
                fprintf(output, "process id \'%s", _target->pid);
        else
                fprintf(output, "thread id \'%s", _target->tid);

        fprintf(output, "\'");
        if (config->run_count > 1)
                fprintf(output, " (%d runs)", config->run_count);
        fprintf(output, ":\n\n");

        if (config->metric_only)
                print_metric_headers(config, evlist, false);
}

static void print_header_csv(struct perf_stat_config *config,
                             struct target *_target __maybe_unused,
                             struct evlist *evlist,
                             int argc __maybe_unused,
                             const char **argv __maybe_unused)
{
        if (config->metric_only)
                print_metric_headers(config, evlist, true);
}
static void print_header_json(struct perf_stat_config *config,
                              struct target *_target __maybe_unused,
                              struct evlist *evlist,
                              int argc __maybe_unused,
                              const char **argv __maybe_unused)
{
        if (config->metric_only)
                print_metric_headers(config, evlist, true);
}

static void print_header(struct perf_stat_config *config,
                         struct target *_target,
                         struct evlist *evlist,
                         int argc, const char **argv)
{
        static int num_print_iv;

        fflush(stdout);

        if (config->interval_clear)
                puts(CONSOLE_CLEAR);

        if (num_print_iv == 0 || config->interval_clear) {
                if (config->json_output)
                        print_header_json(config, _target, evlist, argc, argv);
                else if (config->csv_output)
                        print_header_csv(config, _target, evlist, argc, argv);
                else if (config->interval)
                        print_header_interval_std(config, _target, evlist, argc, argv);
                else
                        print_header_std(config, _target, evlist, argc, argv);
        }

        if (num_print_iv++ == 25)
                num_print_iv = 0;
}

static void print_table(struct perf_stat_config *config, FILE *output, double avg)
{
        char tmp[64];
        int idx, indent = 0;

        scnprintf(tmp, 64, " %17.9f", avg);
        while (tmp[indent] == ' ')
                indent++;

        fprintf(output, "%*s# Table of individual measurements:\n", indent, "");

        for (idx = 0; idx < config->run_count; idx++) {
                double run = (double) config->walltime_run[idx] / NSEC_PER_SEC;
                int h, n = 1 + abs((int) (100.0 * (run - avg)/run) / 5);

                fprintf(output, " %17.9f (%+.9f) ", run, run - avg);

                for (h = 0; h < n; h++)
                        fprintf(output, "#");

                fprintf(output, "\n");
        }

        fprintf(output, "\n%*s# Final result:\n", indent, "");
}

static double timeval2double(struct timeval *t)
{
        return t->tv_sec + (double) t->tv_usec/USEC_PER_SEC;
}

static void print_footer(struct perf_stat_config *config)
{
        double avg = avg_stats(config->walltime_nsecs_stats) / NSEC_PER_SEC;
        FILE *output = config->output;

        if (config->interval || config->csv_output || config->json_output)
                return;

        if (!config->null_run)
                fprintf(output, "\n");

        if (config->run_count == 1) {
                fprintf(output, " %17.9f seconds time elapsed", avg);

                if (config->ru_display) {
                        double ru_utime = timeval2double(&config->ru_data.ru_utime);
                        double ru_stime = timeval2double(&config->ru_data.ru_stime);

                        fprintf(output, "\n\n");
                        fprintf(output, " %17.9f seconds user\n", ru_utime);
                        fprintf(output, " %17.9f seconds sys\n", ru_stime);
                }
        } else {
                double sd = stddev_stats(config->walltime_nsecs_stats) / NSEC_PER_SEC;

                if (config->walltime_run_table)
                        print_table(config, output, avg);

                fprintf(output, " %17.9f +- %.9f seconds time elapsed", avg, sd);

                print_noise_pct(config, NULL, sd, avg, /*before_metric=*/false);
        }
        fprintf(output, "\n\n");

        if (config->print_free_counters_hint && sysctl__nmi_watchdog_enabled())
                fprintf(output,
"Some events weren't counted. Try disabling the NMI watchdog:\n"
"       echo 0 > /proc/sys/kernel/nmi_watchdog\n"
"       perf stat ...\n"
"       echo 1 > /proc/sys/kernel/nmi_watchdog\n");
}

static void print_percore(struct perf_stat_config *config,
                          struct evsel *counter, struct outstate *os)
{
        bool metric_only = config->metric_only;
        FILE *output = config->output;
        struct cpu_aggr_map *core_map;
        int aggr_idx, core_map_len = 0;

        if (!config->aggr_map || !config->aggr_get_id)
                return;

        if (config->percore_show_thread)
                return print_counter(config, counter, os);

        /*
         * core_map will hold the aggr_cpu_id for the cores that have been
         * printed so that each core is printed just once.
         */
        core_map = cpu_aggr_map__empty_new(config->aggr_map->nr);
        if (core_map == NULL) {
                fprintf(output, "Cannot allocate per-core aggr map for display\n");
                return;
        }

        cpu_aggr_map__for_each_idx(aggr_idx, config->aggr_map) {
                struct perf_cpu curr_cpu = config->aggr_map->map[aggr_idx].cpu;
                struct aggr_cpu_id core_id = aggr_cpu_id__core(curr_cpu, NULL);
                bool found = false;

                for (int i = 0; i < core_map_len; i++) {
                        if (aggr_cpu_id__equal(&core_map->map[i], &core_id)) {
                                found = true;
                                break;
                        }
                }
                if (found)
                        continue;

                print_counter_aggrdata(config, counter, aggr_idx, os);

                core_map->map[core_map_len++] = core_id;
        }
        free(core_map);

        if (metric_only)
                fputc('\n', output);
}

static void print_cgroup_counter(struct perf_stat_config *config, struct evlist *evlist,
                                 struct outstate *os)
{
        struct evsel *counter;

        evlist__for_each_entry(evlist, counter) {
                if (os->cgrp != counter->cgrp) {
                        if (os->cgrp != NULL)
                                print_metric_end(config, os);

                        os->cgrp = counter->cgrp;
                        print_metric_begin(config, evlist, os, /*aggr_idx=*/0);
                }

                print_counter(config, counter, os);
        }
        if (os->cgrp)
                print_metric_end(config, os);
}

void evlist__print_counters(struct evlist *evlist, struct perf_stat_config *config,
                            struct target *_target, struct timespec *ts,
                            int argc, const char **argv)
{
        bool metric_only = config->metric_only;
        struct evsel *counter;
        struct outstate os = {
                .fh = config->output,
                .first = true,
        };

        evlist__uniquify_evsel_names(evlist, config);

        if (config->iostat_run)
                evlist->selected = evlist__first(evlist);

        if (config->interval)
                prepare_timestamp(config, &os, ts);

        print_header(config, _target, evlist, argc, argv);

        switch (config->aggr_mode) {
        case AGGR_CORE:
        case AGGR_CACHE:
        case AGGR_CLUSTER:
        case AGGR_DIE:
        case AGGR_SOCKET:
        case AGGR_NODE:
                if (config->cgroup_list)
                        print_aggr_cgroup(config, evlist, &os);
                else
                        print_aggr(config, evlist, &os);
                break;
        case AGGR_THREAD:
        case AGGR_GLOBAL:
                if (config->iostat_run) {
                        iostat_print_counters(evlist, config, ts, os.timestamp,
                                              (iostat_print_counter_t)print_counter, &os);
                } else if (config->cgroup_list) {
                        print_cgroup_counter(config, evlist, &os);
                } else {
                        print_metric_begin(config, evlist, &os, /*aggr_idx=*/0);
                        evlist__for_each_entry(evlist, counter) {
                                print_counter(config, counter, &os);
                        }
                        print_metric_end(config, &os);
                }
                break;
        case AGGR_NONE:
                if (metric_only)
                        print_no_aggr_metric(config, evlist, &os);
                else {
                        evlist__for_each_entry(evlist, counter) {
                                if (counter->percore)
                                        print_percore(config, counter, &os);
                                else
                                        print_counter(config, counter, &os);
                        }
                }
                break;
        case AGGR_MAX:
        case AGGR_UNSET:
        default:
                break;
        }

        print_footer(config);

        fflush(config->output);
}