linux-imx

// SPDX-License-Identifier: GPL-2.0

/*

 * builtin-diff.c

 *

 * Builtin diff command: Analyze two perf.data input files, look up and read

 * DSOs and symbol information, sort them and produce a diff.

 */

#include "builtin.h"

​

#include "util/debug.h"

#include "util/event.h"

#include "util/hist.h"

#include "util/evsel.h"

#include "util/evlist.h"

#include "util/session.h"

#include "util/tool.h"

#include "util/sort.h"

#include "util/symbol.h"

#include "util/util.h"

#include "util/data.h"

#include "util/config.h"

#include "util/time-utils.h"

​

#include <errno.h>

#include <inttypes.h>

#include <stdlib.h>

#include <math.h>

​

struct perf_diff {

    struct perf_tool         tool;

    const char          *time_str;

    struct perf_time_interval   *ptime_range;

    int              range_size;

    int              range_num;

};

​

/* Diff command specific HPP columns. */

enum {

    PERF_HPP_DIFF__BASELINE,

    PERF_HPP_DIFF__PERIOD,

    PERF_HPP_DIFF__PERIOD_BASELINE,

    PERF_HPP_DIFF__DELTA,

    PERF_HPP_DIFF__RATIO,

    PERF_HPP_DIFF__WEIGHTED_DIFF,

    PERF_HPP_DIFF__FORMULA,

    PERF_HPP_DIFF__DELTA_ABS,

​

    PERF_HPP_DIFF__MAX_INDEX

};

​

struct diff_hpp_fmt {

    struct perf_hpp_fmt  fmt;

    int          idx;

    char            *header;

    int          header_width;

};

​

struct data__file {

    struct perf_session *session;

    struct perf_data     data;

    int          idx;

    struct hists        *hists;

    struct diff_hpp_fmt  fmt[PERF_HPP_DIFF__MAX_INDEX];

};

​

static struct data__file *data__files;

static int data__files_cnt;

​

#define data__for_each_file_start(i, d, s)  \

    for (i = s, d = &data__files[s];    \

         i < data__files_cnt;       \

         i++, d = &data__files[i])

​

#define data__for_each_file(i, d) data__for_each_file_start(i, d, 0)

#define data__for_each_file_new(i, d) data__for_each_file_start(i, d, 1)

​

static bool force;

static bool show_period;

static bool show_formula;

static bool show_baseline_only;

static unsigned int sort_compute = 1;

​

static s64 compute_wdiff_w1;

static s64 compute_wdiff_w2;

​

static const char       *cpu_list;

static DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);

​

enum {

    COMPUTE_DELTA,

    COMPUTE_RATIO,

    COMPUTE_WEIGHTED_DIFF,