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Commit fc7fe769 authored by Adrian Hunter's avatar Adrian Hunter Committed by David Woodhouse
Browse files

mtd: tests: add count parameter to mtd_speedtest 



By default mtd_speedtest uses all the eraseblocks of the
MTD partition being tested.  For large partitions a
smaller number is sufficient and makes running the test
quicker.  For that reason, add a parameter 'count' to
specify the maximum number of eraseblocks to use for
testing.

Signed-off-by: default avatarAdrian Hunter <adrian.hunter@nokia.com>
Signed-off-by: default avatarArtem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: default avatarDavid Woodhouse <David.Woodhouse@intel.com>
parent e6da8568

drivers/mtd/tests/mtd_speedtest.c

+13 −2
Original line number Diff line number Diff line
@@ -16,7 +16,7 @@ 
 *

 * Test read and write speed of a MTD device.

 *

 * Author: Adrian Hunter <ext-adrian.hunter@nokia.com>

 * Author: Adrian Hunter <adrian.hunter@nokia.com>

 */



#include <linux/init.h>
@@ -33,6 +33,11 @@ static int dev; 
module_param(dev, int, S_IRUGO);

MODULE_PARM_DESC(dev, "MTD device number to use");



static int count;

module_param(count, int, S_IRUGO);

MODULE_PARM_DESC(count, "Maximum number of eraseblocks to use "

			"(0 means use all)");



static struct mtd_info *mtd;

static unsigned char *iobuf;

static unsigned char *bbt;
@@ -326,6 +331,9 @@ static int __init mtd_speedtest_init(void) 


	printk(KERN_INFO "\n");

	printk(KERN_INFO "=================================================\n");

	if (count)

		printk(PRINT_PREF "MTD device: %d    count: %d\n", dev, count);

	else

		printk(PRINT_PREF "MTD device: %d\n", dev);



	mtd = get_mtd_device(NULL, dev);
@@ -353,6 +361,9 @@ static int __init mtd_speedtest_init(void) 
	       (unsigned long long)mtd->size, mtd->erasesize,

	       pgsize, ebcnt, pgcnt, mtd->oobsize);



	if (count > 0 && count < ebcnt)

		ebcnt = count;



	err = -ENOMEM;

	iobuf = kmalloc(mtd->erasesize, GFP_KERNEL);

	if (!iobuf) {