From patchwork Tue Feb 8 10:02:39 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [2/5] mtd: tests: add count parameter to mtd_speedtest From: Adrian Hunter X-Patchwork-Id: 82277 Message-Id: <1297159362-8407-3-git-send-email-adrian.hunter@nokia.com> To: David Woodhouse Cc: Kyungmin Park , Adrian Hunter , linux-mtd Mailing List , Roman Tereshonkov , Artem Bityutskiy Date: Tue, 8 Feb 2011 12:02:39 +0200 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 --- drivers/mtd/tests/mtd_speedtest.c | 15 +++++++++++++-- 1 files changed, 13 insertions(+), 2 deletions(-) diff --git a/drivers/mtd/tests/mtd_speedtest.c b/drivers/mtd/tests/mtd_speedtest.c index 161feeb..9bd986e 100644 --- a/drivers/mtd/tests/mtd_speedtest.c +++ b/drivers/mtd/tests/mtd_speedtest.c @@ -16,7 +16,7 @@ * * Test read and write speed of a MTD device. * - * Author: Adrian Hunter + * Author: Adrian Hunter */ #include @@ -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) {