dmatest: add support for skipping verification and random data setup
Towards enabling dmatest to checkout performance add a 'noverify' mode. Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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@ -66,6 +66,10 @@ module_param(timeout, uint, S_IRUGO | S_IWUSR);
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MODULE_PARM_DESC(timeout, "Transfer Timeout in msec (default: 3000), "
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"Pass -1 for infinite timeout");
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static bool noverify;
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module_param(noverify, bool, S_IRUGO | S_IWUSR);
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MODULE_PARM_DESC(noverify, "Disable random data setup and verification");
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/**
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* struct dmatest_params - test parameters.
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* @buf_size: size of the memcpy test buffer
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@ -88,6 +92,7 @@ struct dmatest_params {
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unsigned int xor_sources;
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unsigned int pq_sources;
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int timeout;
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bool noverify;
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};
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/**
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@ -435,18 +440,30 @@ static int dmatest_func(void *data)
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break;
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}
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len = dmatest_random() % params->buf_size + 1;
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if (params->noverify) {
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len = params->buf_size;
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src_off = 0;
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dst_off = 0;
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} else {
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len = dmatest_random() % params->buf_size + 1;
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len = (len >> align) << align;
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if (!len)
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len = 1 << align;
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src_off = dmatest_random() % (params->buf_size - len + 1);
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dst_off = dmatest_random() % (params->buf_size - len + 1);
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src_off = (src_off >> align) << align;
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dst_off = (dst_off >> align) << align;
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dmatest_init_srcs(thread->srcs, src_off, len,
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params->buf_size);
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dmatest_init_dsts(thread->dsts, dst_off, len,
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params->buf_size);
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}
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len = (len >> align) << align;
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if (!len)
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len = 1 << align;
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src_off = dmatest_random() % (params->buf_size - len + 1);
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dst_off = dmatest_random() % (params->buf_size - len + 1);
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src_off = (src_off >> align) << align;
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dst_off = (dst_off >> align) << align;
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dmatest_init_srcs(thread->srcs, src_off, len, params->buf_size);
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dmatest_init_dsts(thread->dsts, dst_off, len, params->buf_size);
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for (i = 0; i < src_cnt; i++) {
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u8 *buf = thread->srcs[i] + src_off;
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@ -555,10 +572,14 @@ static int dmatest_func(void *data)
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unmap_src(dev->dev, dma_srcs, len, src_cnt);
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unmap_dst(dev->dev, dma_dsts, params->buf_size, dst_cnt);
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error_count = 0;
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if (params->noverify) {
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dbg_result("test passed", total_tests, src_off, dst_off,
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len, 0);
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continue;
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}
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pr_debug("%s: verifying source buffer...\n", current->comm);
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error_count += dmatest_verify(thread->srcs, 0, src_off,
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error_count = dmatest_verify(thread->srcs, 0, src_off,
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0, PATTERN_SRC, true);
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error_count += dmatest_verify(thread->srcs, src_off,
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src_off + len, src_off,
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@ -773,6 +794,7 @@ static void run_threaded_test(struct dmatest_info *info)
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params->xor_sources = xor_sources;
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params->pq_sources = pq_sources;
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params->timeout = timeout;
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params->noverify = noverify;
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request_channels(info, DMA_MEMCPY);
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request_channels(info, DMA_XOR);
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