diff options
| -rw-r--r-- | drivers/dma/dmatest.c | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/drivers/dma/dmatest.c b/drivers/dma/dmatest.c index 998344b0fb7a..6302ebef2938 100644 --- a/drivers/dma/dmatest.c +++ b/drivers/dma/dmatest.c @@ -79,6 +79,10 @@ static bool verbose; module_param(verbose, bool, S_IRUGO | S_IWUSR); MODULE_PARM_DESC(verbose, "Enable \"success\" result messages (default: off)"); +static int alignment = -1; +module_param(alignment, int, 0644); +MODULE_PARM_DESC(alignment, "Custom data address alignment taken as 2^(alignment) (default: not used (-1))"); + /** * struct dmatest_params - test parameters. * @buf_size: size of the memcpy test buffer @@ -103,6 +107,7 @@ struct dmatest_params { int timeout; bool noverify; bool norandom; + int alignment; }; /** @@ -526,22 +531,26 @@ static int dmatest_func(void *data) chan = thread->chan; dev = chan->device; if (thread->type == DMA_MEMCPY) { - align = dev->copy_align; + align = params->alignment < 0 ? dev->copy_align : + params->alignment; src_cnt = dst_cnt = 1; } else if (thread->type == DMA_MEMSET) { - align = dev->fill_align; + align = params->alignment < 0 ? dev->fill_align : + params->alignment; src_cnt = dst_cnt = 1; is_memset = true; } else if (thread->type == DMA_XOR) { /* force odd to ensure dst = src */ src_cnt = min_odd(params->xor_sources | 1, dev->max_xor); dst_cnt = 1; - align = dev->xor_align; + align = params->alignment < 0 ? dev->xor_align : + params->alignment; } else if (thread->type == DMA_PQ) { /* force odd to ensure dst = src */ src_cnt = min_odd(params->pq_sources | 1, dma_maxpq(dev, 0)); dst_cnt = 2; - align = dev->pq_align; + align = params->alignment < 0 ? dev->pq_align : + params->alignment; pq_coefs = kmalloc(params->pq_sources + 1, GFP_KERNEL); if (!pq_coefs) @@ -1037,6 +1046,7 @@ static void add_threaded_test(struct dmatest_info *info) params->timeout = timeout; params->noverify = noverify; params->norandom = norandom; + params->alignment = alignment; request_channels(info, DMA_MEMCPY); request_channels(info, DMA_MEMSET); |