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    SubjectRe: [PATCH V2 2/3] dmaselftest: add memcpy selftest support functions
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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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