[2/2] dmaengine: dmatest: add norandom option

[2/2] dmaengine: dmatest: add norandom option

[Yang Shunyong]

Existing option noverify disables both random src/dst address offset
setup and data verification. Sometimes, we need to control random
src/dst address setup and verification separately, such as disabling
random to make sure that test covers addresses in all interleaving
banks in one run. This patch adds option norandom to disable random
offset setup. Option noverify has been changed to disable data
verification only.

Signed-off-by: Yang Shunyong <shunyong.yang@hxt-semitech.com>
---
 drivers/dma/dmatest.c | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

diff --git a/drivers/dma/dmatest.c b/drivers/dma/dmatest.c
index 4cdccc3..cc3ab97 100644
--- a/drivers/dma/dmatest.c
+++ b/drivers/dma/dmatest.c
@@ -72,7 +72,11 @@
 
 static bool noverify;
 module_param(noverify, bool, 0644);
-MODULE_PARM_DESC(noverify, "Disable random data setup and verification");
+MODULE_PARM_DESC(noverify, "Disable data verification (default: verify)");
+
+static bool norandom;
+module_param(norandom, bool, 0644);
+MODULE_PARM_DESC(norandom, "Disable random offset setup (default: random)");
 
 static bool verbose;
 module_param(verbose, bool, 0644);
@@ -101,6 +105,7 @@ struct dmatest_params {
 	unsigned int	pq_sources;
 	int		timeout;
 	bool		noverify;
+	bool		norandom;
 };
 
 /**
@@ -573,7 +578,7 @@ static int dmatest_func(void *data)
 			break;
 		}
 
-		if (params->noverify)
+		if (params->norandom)
 			len = params->buf_size;
 		else
 			len = dmatest_random() % params->buf_size + 1;
@@ -584,17 +589,19 @@ static int dmatest_func(void *data)
 
 		total_len += len;
 
-		if (params->noverify) {
+		if (params->norandom) {
 			src_off = 0;
 			dst_off = 0;
 		} else {
-			start = ktime_get();
 			src_off = dmatest_random() % (params->buf_size - len + 1);
 			dst_off = dmatest_random() % (params->buf_size - len + 1);
 
 			src_off = (src_off >> align) << align;
 			dst_off = (dst_off >> align) << align;
+		}
 
+		if (!params->noverify) {
+			start = ktime_get();
 			dmatest_init_srcs(thread->srcs, src_off, len,
 					  params->buf_size, is_memset);
 			dmatest_init_dsts(thread->dsts, dst_off, len,
@@ -973,6 +980,7 @@ static void run_threaded_test(struct dmatest_info *info)
 	params->pq_sources = pq_sources;
 	params->timeout = timeout;
 	params->noverify = noverify;
+	params->norandom = norandom;
 
 	request_channels(info, DMA_MEMCPY);
 	request_channels(info, DMA_MEMSET);

[2/2] dmaengine: dmatest: add norandom option

[Vinod Koul]

On Mon, Jan 22, 2018 at 06:44:41PM +0800, Yang Shunyong wrote:
> Existing option noverify disables both random src/dst address offset
> setup and data verification. Sometimes, we need to control random
> src/dst address setup and verification separately, such as disabling
> random to make sure that test covers addresses in all interleaving
> banks in one run. This patch adds option norandom to disable random
> offset setup. Option noverify has been changed to disable data
> verification only.

This doesn't apply for me due to dependency on previous patch. Please rebase
and resend.

[2/2] dmaengine: dmatest: add norandom option

[Yang Shunyong]

Hi, Vinod

On Wed, 2018-01-31 at 13:04 +0530, Vinod Koul wrote:
> On Mon, Jan 22, 2018 at 06:44:41PM +0800, Yang Shunyong wrote:
> > 
> > Existing option noverify disables both random src/dst address
> > offset
> > setup and data verification. Sometimes, we need to control random
> > src/dst address setup and verification separately, such as
> > disabling
> > random to make sure that test covers addresses in all interleaving
> > banks in one run. This patch adds option norandom to disable random
> > offset setup. Option noverify has been changed to disable data
> > verification only.
> This doesn't apply for me due to dependency on previous patch. Please
> rebase
> and resend.
> 

Thanks. I have finished the rebase. I will send out v2 patch when I
finish test.

Thanks.
Shunyong.--
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