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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: Adrian Hunter <adrian.hunter@nokia.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
Adrian Hunter 2011-02-08 12:02:39 +02:00 committed by David Woodhouse
parent e6da85685b
commit fc7fe7691c
1 changed files with 13 additions and 2 deletions
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15
drivers/mtd/tests/mtd_speedtest.c
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@ -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;
@ -326,7 +331,10 @@ static int __init mtd_speedtest_init(void)
printk(KERN_INFO "\n");
printk(KERN_INFO "=================================================\n");
printk(PRINT_PREF "MTD device: %d\n", dev);
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);
if (IS_ERR(mtd)) {
@ -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) {