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mtd: mtd_stresstest: use mtd_test helpers 

Use mtdtest_read(), mtdtest_write(), mtdtest_erase_eraseblock(), and
mtdtest_scan_for_bad_eraseblocks() in mtd_test helpers.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Brian Norris <computersforpeace@gmail.com>
Cc: Vikram Narayanan <vikram186@gmail.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
Akinobu Mita 2013-08-03 18:52:13 +09:00 committed by David Woodhouse
parent 59b0816d7c
commit 5a78df69ee
1 changed files with 12 additions and 74 deletions
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86
drivers/mtd/tests/stresstest.c
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@ -31,6 +31,8 @@
#include <linux/vmalloc.h>
#include <linux/random.h>
#include "mtd_test.h"
static int dev = -EINVAL;
module_param(dev, int, S_IRUGO);
MODULE_PARM_DESC(dev, "MTD device number to use");
@ -81,46 +83,8 @@ static int rand_len(int offs)
return len;
}
static int erase_eraseblock(int ebnum)
{
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;
err = mtd_erase(mtd, &ei);
if (unlikely(err)) {
pr_err("error %d while erasing EB %d\n", err, ebnum);
return err;
}
if (unlikely(ei.state == MTD_ERASE_FAILED)) {
pr_err("some erase error occurred at EB %d\n",
ebnum);
return -EIO;
}
return 0;
}
static int is_block_bad(int ebnum)
{
loff_t addr = ebnum * mtd->erasesize;
int ret;
ret = mtd_block_isbad(mtd, addr);
if (ret)
pr_info("block %d is bad\n", ebnum);
return ret;
}
static int do_read(void)
{
size_t read;
int eb = rand_eb();
int offs = rand_offs();
int len = rand_len(offs), err;
@ -133,14 +97,10 @@ static int do_read(void)
len = mtd->erasesize - offs;
}
addr = eb * mtd->erasesize + offs;
err = mtd_read(mtd, addr, len, &read, readbuf);
if (mtd_is_bitflip(err))
err = 0;
if (unlikely(err || read != len)) {
err = mtdtest_read(mtd, addr, len, readbuf);
if (unlikely(err)) {
pr_err("error: read failed at 0x%llx\n",
(long long)addr);
if (!err)
err = -EINVAL;
return err;
}
return 0;
@ -149,12 +109,11 @@ static int do_read(void)
static int do_write(void)
{
int eb = rand_eb(), offs, err, len;
size_t written;
loff_t addr;
offs = offsets[eb];
if (offs >= mtd->erasesize) {
err = erase_eraseblock(eb);
err = mtdtest_erase_eraseblock(mtd, eb);
if (err)
return err;
offs = offsets[eb] = 0;
@ -165,19 +124,17 @@ static int do_write(void)
if (bbt[eb + 1])
len = mtd->erasesize - offs;
else {
err = erase_eraseblock(eb + 1);
err = mtdtest_erase_eraseblock(mtd, eb + 1);
if (err)
return err;
offsets[eb + 1] = 0;
}
}
addr = eb * mtd->erasesize + offs;
err = mtd_write(mtd, addr, len, &written, writebuf);
if (unlikely(err || written != len)) {
err = mtdtest_write(mtd, addr, len, writebuf);
if (unlikely(err)) {
pr_err("error: write failed at 0x%llx\n",
(long long)addr);
if (!err)
err = -EINVAL;
return err;
}
offs += len;
@ -197,28 +154,6 @@ static int do_operation(void)
return do_write();
}
static int scan_for_bad_eraseblocks(void)
{
int i, bad = 0;
bbt = kzalloc(ebcnt, GFP_KERNEL);
if (!bbt)
return -ENOMEM;
if (!mtd_can_have_bb(mtd))
return 0;
pr_info("scanning for bad eraseblocks\n");
for (i = 0; i < ebcnt; ++i) {
bbt[i] = is_block_bad(i) ? 1 : 0;
if (bbt[i])
bad += 1;
cond_resched();
}
pr_info("scanned %d eraseblocks, %d are bad\n", i, bad);
return 0;
}
static int __init mtd_stresstest_init(void)
{
int err;
@ -280,7 +215,10 @@ static int __init mtd_stresstest_init(void)
offsets[i] = mtd->erasesize;
prandom_bytes(writebuf, bufsize);
err = scan_for_bad_eraseblocks();
bbt = kzalloc(ebcnt, GFP_KERNEL);
if (!bbt)
goto out;
err = mtdtest_scan_for_bad_eraseblocks(mtd, bbt, 0, ebcnt);
if (err)
goto out;