Messages in this thread | | | Subject | Re: [PATCH V2 2/3] dmaselftest: add memcpy selftest support functions | From | Sinan Kaya <> | Date | Mon, 2 Nov 2015 23:18:37 -0500 |
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On 11/2/2015 11:15 PM, Vinod Koul wrote: > On Mon, Nov 02, 2015 at 01:07:38AM -0500, Sinan Kaya wrote: >> This patch adds supporting utility functions >> for selftest. The intention is to share the self >> test code between different drivers. >> >> Supported test cases include: >> 1. dma_map_single >> 2. streaming DMA >> 3. coherent DMA >> 4. scatter-gather DMA > > This seems quite similar to dmatest, any reason why you cannot use/enhance > that? > Dmatest is a standalone kernel module intended for stress testing DMA engines from userspace with N number of threads and M size combinations etc.
This one; on the other hand, is selftest to verify hardware is working as expected during power up.
Almost all DMA engine drivers come with some sort of selftest code called from probe. I followed the same design pattern.
I think the goal is to remove the duplicate self test code in all drivers over time.
-- Sinan Kaya Qualcomm Technologies, Inc. on behalf of Qualcomm Innovation Center, Inc. Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project
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