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authorRoman Tereshonkov <roman.tereshonkov@nokia.com>2011-02-08 12:02:40 +0200
committerDavid Woodhouse <David.Woodhouse@intel.com>2011-03-11 14:22:45 +0000
commit4085bcc682e1276ab4ac2da9866daadf944d7167 (patch)
tree65a3554fa2325860f246ad6460e20b8e49d7a95a /drivers/mtd/tests
parentfc7fe7691c6bbd5f8f51a87e759770975c648410 (diff)
downloadop-kernel-dev-4085bcc682e1276ab4ac2da9866daadf944d7167.zip
op-kernel-dev-4085bcc682e1276ab4ac2da9866daadf944d7167.tar.gz
mtd: tests: add multiblock erase test to the mtd_speedtest
New multiblock erase speed test is added to mtd_speedtest. It consists of 2-, 4-, 8-, 16-, 32- and 64-blocks at once multiblock erase tests. Signed-off-by: Roman Tereshonkov <roman.tereshonkov@nokia.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'drivers/mtd/tests')
-rw-r--r--drivers/mtd/tests/mtd_speedtest.c59
1 files changed, 57 insertions, 2 deletions
diff --git a/drivers/mtd/tests/mtd_speedtest.c b/drivers/mtd/tests/mtd_speedtest.c
index 9bd986e..3ce6fce 100644
--- a/drivers/mtd/tests/mtd_speedtest.c
+++ b/drivers/mtd/tests/mtd_speedtest.c
@@ -94,6 +94,33 @@ static int erase_eraseblock(int ebnum)
return 0;
}
+static int multiblock_erase(int ebnum, int blocks)
+{
+ int err;
+ struct erase_info ei;
+ loff_t addr = ebnum * mtd->erasesize;
+
+ memset(&ei, 0, sizeof(struct erase_info));
+ ei.mtd = mtd;
+ ei.addr = addr;
+ ei.len = mtd->erasesize * blocks;
+
+ err = mtd->erase(mtd, &ei);
+ if (err) {
+ printk(PRINT_PREF "error %d while erasing EB %d, blocks %d\n",
+ err, ebnum, blocks);
+ return err;
+ }
+
+ if (ei.state == MTD_ERASE_FAILED) {
+ printk(PRINT_PREF "some erase error occurred at EB %d,"
+ "blocks %d\n", ebnum, blocks);
+ return -EIO;
+ }
+
+ return 0;
+}
+
static int erase_whole_device(void)
{
int err;
@@ -292,7 +319,10 @@ static long calc_speed(void)
ms = (finish.tv_sec - start.tv_sec) * 1000 +
(finish.tv_usec - start.tv_usec) / 1000;
k = goodebcnt * mtd->erasesize / 1024;
- speed = (k * 1000) / ms;
+ if (ms)
+ speed = (k * 1000) / ms;
+ else
+ speed = 0;
return speed;
}
@@ -325,7 +355,7 @@ out:
static int __init mtd_speedtest_init(void)
{
- int err, i;
+ int err, i, blocks, j, k;
long speed;
uint64_t tmp;
@@ -495,6 +525,31 @@ static int __init mtd_speedtest_init(void)
speed = calc_speed();
printk(PRINT_PREF "erase speed is %ld KiB/s\n", speed);
+ /* Multi-block erase all eraseblocks */
+ for (k = 1; k < 7; k++) {
+ blocks = 1 << k;
+ printk(PRINT_PREF "Testing %dx multi-block erase speed\n",
+ blocks);
+ start_timing();
+ for (i = 0; i < ebcnt; ) {
+ for (j = 0; j < blocks && (i + j) < ebcnt; j++)
+ if (bbt[i + j])
+ break;
+ if (j < 1) {
+ i++;
+ continue;
+ }
+ err = multiblock_erase(i, j);
+ if (err)
+ goto out;
+ cond_resched();
+ i += j;
+ }
+ stop_timing();
+ speed = calc_speed();
+ printk(PRINT_PREF "%dx multi-block erase speed is %ld KiB/s\n",
+ blocks, speed);
+ }
printk(PRINT_PREF "finished\n");
out:
kfree(iobuf);
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