dmaengine: dmatest: add norandom option

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, but data verification is still performed.

This patch adds option norandom to disable random offset setup. Option
noverify has been changed to disable data verification only.

Cc: Joey Zheng <yu.zheng@hxt-semitech.com>
Signed-off-by: Yang Shunyong <shunyong.yang@hxt-semitech.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

diff --git a/drivers/dma/dmatest.c b/drivers/dma/dmatest.c
index 80cc2be..b933952 100644 (file)
--- a/drivers/dma/dmatest.c
+++ b/drivers/dma/dmatest.c
@@ -74,7 +74,11 @@ MODULE_PARM_DESC(timeout, "Transfer Timeout in msec (default: 3000), "
 
 static bool noverify;
 module_param(noverify, bool, S_IRUGO | S_IWUSR);
-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, S_IRUGO | S_IWUSR);
@@ -103,6 +107,7 @@ struct dmatest_params {
        unsigned int    pq_sources;
        int             timeout;
        bool            noverify;
+       bool            norandom;
 };
 
 /**
@@ -575,7 +580,7 @@ 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;
@@ -586,17 +591,19 @@ 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,
@@ -975,6 +982,7 @@ 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);