linux/drivers/mtd/tests/speedtest.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (C) 2007 Nokia Corporation
 *
 * Test read and write speed of a MTD device.
 *
 * Author: Adrian Hunter <[email protected]>
 */

#define pr_fmt(fmt) …

#include <linux/init.h>
#include <linux/ktime.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/err.h>
#include <linux/mtd/mtd.h>
#include <linux/slab.h>
#include <linux/sched.h>
#include <linux/random.h>

#include "mtd_test.h"

static int dev = …;
module_param(dev, int, S_IRUGO);
MODULE_PARM_DESC(…) …;

static int count;
module_param(count, int, S_IRUGO);
MODULE_PARM_DESC(…) …;

static struct mtd_info *mtd;
static unsigned char *iobuf;
static unsigned char *bbt;

static int pgsize;
static int ebcnt;
static int pgcnt;
static int goodebcnt;
static ktime_t start, finish;

static int multiblock_erase(int ebnum, int blocks)
{ … }

static int write_eraseblock(int ebnum)
{ … }

static int write_eraseblock_by_page(int ebnum)
{ … }

static int write_eraseblock_by_2pages(int ebnum)
{ … }

static int read_eraseblock(int ebnum)
{ … }

static int read_eraseblock_by_page(int ebnum)
{ … }

static int read_eraseblock_by_2pages(int ebnum)
{ … }

static inline void start_timing(void)
{ … }

static inline void stop_timing(void)
{ … }

static long calc_speed(void)
{ … }

static int __init mtd_speedtest_init(void)
{ … }
module_init(mtd_speedtest_init);

static void __exit mtd_speedtest_exit(void)
{ … }
module_exit(mtd_speedtest_exit);

MODULE_DESCRIPTION(…) …;
MODULE_AUTHOR(…) …;
MODULE_LICENSE(…) …;