static struct gendisk *ufs_test_get_rq_disk(void)
{
struct request_queue *req_q = test_iosched_get_req_queue();
struct scsi_device *sd;
struct device *dev;
struct scsi_disk *sdkp;
struct gendisk *gd;
if (!req_q) {
test_pr_info("%s: Could not fetch request_queue", __func__);
gd = NULL;
goto exit;
}
sd = (struct scsi_device *)req_q->queuedata;
dev = &sd->sdev_gendev;
sdkp = scsi_disk_get_from_dev(dev);
if (!sdkp) {
test_pr_info("%s: Could not fatch scsi disk", __func__);
gd = NULL;
goto exit;
}
gd = sdkp->disk;
exit:
return gd;
}
static int ufs_test_run_write_read_test(struct test_data *td)
{
int ret = 0;
unsigned int start_sec;
unsigned int num_bios;
struct request_queue *q = td->req_q;
start_sec = td->start_sector + sizeof(int) * BIO_U32_SIZE
* td->num_of_write_bios;
if (utd->random_test_seed != 0)
ufs_test_pseudo_rnd_size(&utd->random_test_seed, &num_bios);
else
num_bios = DEFAULT_NUM_OF_BIOS;
/* Adding a write request */
test_pr_info(
"%s: Adding a write request with %d bios to Q, req_id=%d"
, __func__, num_bios, td->wr_rd_next_req_id);
utd->write_completed = false;
ret = test_iosched_add_wr_rd_test_req(0, WRITE, start_sec,
num_bios, TEST_PATTERN_5A,
ufs_test_write_read_test_end_io_fn);
if (ret) {
test_pr_err("%s: failed to add a write request", __func__);
return ret;
}
/* waiting for the write request to finish */
blk_run_queue(q);
wait_event(utd->wait_q, utd->write_completed);
/* Adding a read request*/
test_pr_info("%s: Adding a read request to Q", __func__);
ret = test_iosched_add_wr_rd_test_req(0, READ, start_sec,
num_bios, TEST_PATTERN_5A, NULL);
if (ret) {
test_pr_err("%s: failed to add a read request", __func__);
return ret;
}
blk_run_queue(q);
return ret;
}
static
int ufs_test_write_read_test_open_cb(struct inode *inode, struct file *file)
{
file->private_data = inode->i_private;
message_repeat = 1;
test_pr_info("%s:UFS test initialized", __func__);
return 0;
}
static ssize_t long_sequential_write_test_write(struct file *file,
const char __user *buf,
size_t count,
loff_t *ppos)
{
int ret = 0;
int i = 0;
int number = -1;
unsigned long mtime, byte_count;
test_pr_info("%s: -- UFS Long Sequential Write TEST --", __func__);
sscanf(buf, "%d", &number);
if (number <= 0)
number = 1;
memset(&utd->test_info, 0, sizeof(struct test_info));
utd->test_info.data = utd;
utd->test_info.get_rq_disk_fn = ufs_test_get_rq_disk;
utd->test_info.get_test_case_str_fn = ufs_test_get_test_case_str;
utd->test_info.run_test_fn = run_long_seq_test;
utd->test_info.testcase = TEST_LONG_SEQUENTIAL_WRITE;
for (i = 0 ; i < number ; ++i) {
test_pr_info("%s: Cycle # %d / %d", __func__, i+1, number);
test_pr_info("%s: ====================", __func__);
utd->test_info.test_byte_count = 0;
ret = test_iosched_start_test(&utd->test_info);
if (ret)
break;
mtime = ktime_to_ms(utd->test_info.test_duration);
byte_count = utd->test_info.test_byte_count;
long_seq_test_calc_throughput(mtime, byte_count);
/* Allow FS requests to be dispatched */
msleep(1000);
}
return count;
}
void long_seq_test_calc_throughput(unsigned long mtime,
unsigned long byte_count)
{
unsigned long fraction, integer;
test_pr_info("%s: time is %lu msec, size is %lu.%lu MiB",
__func__, mtime, LONG_TEST_SIZE_INTEGER(byte_count),
LONG_TEST_SIZE_FRACTION(byte_count));
mtime *= MB_MSEC_RATIO_APPROXIMATION;
fraction = integer = (byte_count * 10) / mtime;
integer /= 10;
fraction -= integer * 10;
test_pr_info("%s: Throughput: %lu.%lu MiB/sec\n",
__func__, integer, fraction);
}
static int run_long_seq_test(struct test_data *td)
{
int ret = 0;
int direction;
static unsigned int inserted_requests;
BUG_ON(!td);
td->test_count = 0;
utd->completed_req_count = 0;
inserted_requests = 0;
if (td->test_info.testcase == TEST_LONG_SEQUENTIAL_READ)
direction = READ;
else
direction = WRITE;
test_pr_info("%s: Adding %d requests, first req_id=%d",
__func__, LONG_SEQ_TEST_NUM_REQS,
td->wr_rd_next_req_id);
do {
/*
* since our requests come from a pool containing 128
* requests, we don't want to exhaust this quantity,
* therefore we add up to QUEUE_MAX_REQUESTS (which
* includes a safety margin) and then call the mmc layer
* to fetch them
*/
if (td->test_count >= QUEUE_MAX_REQUESTS) {
blk_run_queue(td->req_q);
continue;
}
ret = test_iosched_add_wr_rd_test_req(0, direction,
td->start_sector, TEST_MAX_BIOS_PER_REQ,
TEST_PATTERN_5A,
long_seq_test_free_end_io_fn);
if (ret) {
test_pr_err("%s: failed to create request" , __func__);
break;
}
inserted_requests++;
td->test_info.test_byte_count +=
(TEST_MAX_BIOS_PER_REQ * sizeof(unsigned int) *
BIO_U32_SIZE);
} while (inserted_requests < LONG_SEQ_TEST_NUM_REQS);
/* in this case the queue will not run in the above loop */
if (LONG_SEQ_TEST_NUM_REQS < QUEUE_MAX_REQUESTS)
blk_run_queue(td->req_q);
return ret;
}
void long_seq_test_calc_throughput(unsigned long mtime,
unsigned long byte_count)
{
unsigned long fraction, integer;
test_pr_info("%s: time is %lu msec, size is %lu.%lu MiB",
__func__, mtime, LONG_TEST_SIZE_INTEGER(byte_count),
LONG_TEST_SIZE_FRACTION(byte_count));
/* we first multiply in order not to lose precision */
mtime *= MB_MSEC_RATIO_APPROXIMATION;
/* divide values to get a MiB/sec integer value with one
digit of precision
*/
fraction = integer = (byte_count * 10) / mtime;
integer /= 10;
/* and calculate the MiB value fraction */
fraction -= integer * 10;
test_pr_info("%s: Throughput: %lu.%lu MiB/sec\n",
__func__, integer, fraction);
}
static void ufs_test_write_read_test_end_io_fn(struct request *rq, int err)
{
struct test_request *test_rq = (struct test_request *)rq->elv.priv[0];
BUG_ON(!test_rq);
test_rq->req_completed = 1;
test_rq->req_result = err;
test_pr_info("%s: request %d completed, err=%d",
__func__, test_rq->req_id, err);
utd->write_completed = true;
wake_up(&utd->wait_q);
}
static ssize_t ufs_test_write_read_test_write_cb(struct file *file,
const char __user *buf,
size_t count, loff_t *ppos)
{
int ret = 0;
int i;
int number;
sscanf(buf, "%d", &number);
if (number <= 0)
number = 1;
test_pr_info("%s:the test will run for %d iterations.",
__func__, number);
memset(&utd->test_info, 0, sizeof(struct test_info));
/* Initializing test */
utd->test_info.data = utd;
utd->test_info.get_test_case_str_fn = ufs_test_get_test_case_str;
utd->test_info.testcase = UFS_TEST_WRITE_READ_TEST;
utd->test_info.get_rq_disk_fn = ufs_test_get_rq_disk;
utd->test_info.run_test_fn = ufs_test_run_write_read_test;
/* Running the test multiple times */
for (i = 0; i < number; ++i) {
ret = test_iosched_start_test(&utd->test_info);
if (ret) {
test_pr_err("%s: Test failed.", __func__);
return ret;
}
}
test_pr_info("%s: Completed all the ufs test iterations.", __func__);
return count;
}
static int run_long_seq_test(struct test_data *td)
{
int ret = 0;
int direction;
static unsigned int inserted_requests;
BUG_ON(!td);
td->test_count = 0;
utd->completed_req_count = 0;
inserted_requests = 0;
if (td->test_info.testcase == TEST_LONG_SEQUENTIAL_READ)
direction = READ;
else
direction = WRITE;
test_pr_info("%s: Adding %d requests, first req_id=%d",
__func__, LONG_SEQ_TEST_NUM_REQS,
td->wr_rd_next_req_id);
do {
if (td->test_count >= QUEUE_MAX_REQUESTS) {
blk_run_queue(td->req_q);
continue;
}
ret = test_iosched_add_wr_rd_test_req(0, direction,
td->start_sector, TEST_MAX_BIOS_PER_REQ,
TEST_PATTERN_5A,
long_seq_test_free_end_io_fn);
if (ret) {
test_pr_err("%s: failed to create request" , __func__);
break;
}
inserted_requests++;
td->test_info.test_byte_count +=
(TEST_MAX_BIOS_PER_REQ * sizeof(unsigned int) *
BIO_U32_SIZE);
} while (inserted_requests < LONG_SEQ_TEST_NUM_REQS);
if (LONG_SEQ_TEST_NUM_REQS < QUEUE_MAX_REQUESTS)
blk_run_queue(td->req_q);
return ret;
}
