Exemplo n.º 1
0
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;
}
Exemplo n.º 3
0
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);
}
Exemplo n.º 8
0
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);
}
Exemplo n.º 9
0
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;
}
Exemplo n.º 10
0
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;
}