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Diffstat (limited to 'drivers/dma/dmatest.c')
-rw-r--r--drivers/dma/dmatest.c16
1 files changed, 12 insertions, 4 deletions
diff --git a/drivers/dma/dmatest.c b/drivers/dma/dmatest.c
index 80cc2be6483c..b9339524d5bd 100644
--- 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);