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Commit e3b9c347 authored by Dan Williams's avatar Dan Williams
Browse files

dmatest: add support for skipping verification and random data setup 



Towards enabling dmatest to checkout performance add a 'noverify' mode.

Acked-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: default avatarDan Williams <dan.j.williams@intel.com>
parent be9fa5a4

drivers/dma/dmatest.c

+33 −11
Original line number Diff line number Diff line
@@ -66,6 +66,10 @@ module_param(timeout, uint, S_IRUGO | S_IWUSR); 
MODULE_PARM_DESC(timeout, "Transfer Timeout in msec (default: 3000), "

		 "Pass -1 for infinite timeout");



static bool noverify;

module_param(noverify, bool, S_IRUGO | S_IWUSR);

MODULE_PARM_DESC(noverify, "Disable random data setup and verification");



/**

 * struct dmatest_params - test parameters.

 * @buf_size:		size of the memcpy test buffer
@@ -88,6 +92,7 @@ struct dmatest_params { 
	unsigned int	xor_sources;

	unsigned int	pq_sources;

	int		timeout;

	bool		noverify;

};



/**
@@ -435,6 +440,11 @@ static int dmatest_func(void *data) 
			break;

		}



		if (params->noverify) {

			len = params->buf_size;

			src_off = 0;

			dst_off = 0;

		} else {

			len = dmatest_random() % params->buf_size + 1;

			len = (len >> align) << align;

			if (!len)
@@ -445,8 +455,15 @@ static int dmatest_func(void *data) 
			src_off = (src_off >> align) << align;

			dst_off = (dst_off >> align) << align;



		dmatest_init_srcs(thread->srcs, src_off, len, params->buf_size);

		dmatest_init_dsts(thread->dsts, dst_off, len, params->buf_size);

			dmatest_init_srcs(thread->srcs, src_off, len,

					  params->buf_size);

			dmatest_init_dsts(thread->dsts, dst_off, len,

					  params->buf_size);

		}



		len = (len >> align) << align;

		if (!len)

			len = 1 << align;



		for (i = 0; i < src_cnt; i++) {

			u8 *buf = thread->srcs[i] + src_off;
@@ -555,10 +572,14 @@ static int dmatest_func(void *data) 
		unmap_src(dev->dev, dma_srcs, len, src_cnt);

		unmap_dst(dev->dev, dma_dsts, params->buf_size, dst_cnt);



		error_count = 0;

		if (params->noverify) {

			dbg_result("test passed", total_tests, src_off, dst_off,

				   len, 0);

			continue;

		}



		pr_debug("%s: verifying source buffer...\n", current->comm);

		error_count += dmatest_verify(thread->srcs, 0, src_off,

		error_count = dmatest_verify(thread->srcs, 0, src_off,

				0, PATTERN_SRC, true);

		error_count += dmatest_verify(thread->srcs, src_off,

				src_off + len, src_off,
@@ -773,6 +794,7 @@ static void run_threaded_test(struct dmatest_info *info) 
	params->xor_sources = xor_sources;

	params->pq_sources = pq_sources;

	params->timeout = timeout;

	params->noverify = noverify;



	request_channels(info, DMA_MEMCPY);

	request_channels(info, DMA_XOR);