linux-kernel - Re: [PATCHv3 1/1] [tools/selftests]: android/ion: userspace test utility for ion buffer sharing

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Date:   Tue, 17 Oct 2017 08:18:28 -0600
From:   Shuah Khan <shuah@...nel.org>
To:     Pintu Agarwal <pintu.ping@...il.com>, linux-kernel@...r.kernel.org,
        linux-kselftest@...r.kernel.org, labbott@...hat.com,
        gregkh@...uxfoundation.org, dvhart@...radead.org,
        bamvor.zhangjian@...aro.org, Shuah Khan <shuahkh@....samsung.com>,
        Shuah Khan <shuah@...nel.org>
Subject: Re: [PATCHv3 1/1] [tools/selftests]: android/ion: userspace test
 utility for ion buffer sharing

On 10/14/2017 05:36 AM, Pintu Agarwal wrote:
> This is a test utility to verify ION buffer sharing in user space
> between 2 independent processes.
> It uses unix domain socket (with SCM_RIGHTS) as IPC to transfer an FD to
> another process to share the same buffer.
> This utility demonstrates how ION buffer sharing can be implemented between
> two user space processes, using various heap types.
> 
> This utility is made to be run as part of kselftest framework in kernel.
> The utility is verified on Ubuntu-32 bit system with Linux Kernel 4.14,
> using ION system heap and CMA heap.
> 
> For more information about the utility please check the README file.
> 
> Signed-off-by: Pintu Agarwal <pintu.ping@...il.com>
> ---
>  tools/testing/selftests/Makefile                   |   3 +-
>  tools/testing/selftests/android/Makefile           |  44 ++++
>  tools/testing/selftests/android/ion/.gitignore     |   2 +
>  tools/testing/selftests/android/ion/Makefile       |  16 ++
>  tools/testing/selftests/android/ion/README         | 132 +++++++++++
>  tools/testing/selftests/android/ion/config         |   3 +
>  tools/testing/selftests/android/ion/ion_test.sh    |  61 +++++
>  .../testing/selftests/android/ion/ionapp_export.c  | 151 ++++++++++++
>  .../testing/selftests/android/ion/ionapp_import.c  |  88 +++++++
>  tools/testing/selftests/android/ion/ionutils.c     | 259 +++++++++++++++++++++
>  tools/testing/selftests/android/ion/ionutils.h     |  55 +++++
>  tools/testing/selftests/android/ion/ipcsocket.c    | 227 ++++++++++++++++++
>  tools/testing/selftests/android/ion/ipcsocket.h    |  35 +++
>  tools/testing/selftests/android/run.sh             |   3 +
>  14 files changed, 1078 insertions(+), 1 deletion(-)
>  create mode 100644 tools/testing/selftests/android/Makefile
>  create mode 100644 tools/testing/selftests/android/ion/.gitignore
>  create mode 100644 tools/testing/selftests/android/ion/Makefile
>  create mode 100644 tools/testing/selftests/android/ion/README
>  create mode 100644 tools/testing/selftests/android/ion/config
>  create mode 100755 tools/testing/selftests/android/ion/ion_test.sh
>  create mode 100644 tools/testing/selftests/android/ion/ionapp_export.c
>  create mode 100644 tools/testing/selftests/android/ion/ionapp_import.c
>  create mode 100644 tools/testing/selftests/android/ion/ionutils.c
>  create mode 100644 tools/testing/selftests/android/ion/ionutils.h
>  create mode 100644 tools/testing/selftests/android/ion/ipcsocket.c
>  create mode 100644 tools/testing/selftests/android/ion/ipcsocket.h
>  create mode 100755 tools/testing/selftests/android/run.sh
> 

Looks good to me. I am hoping you were able to verify that the following
use-cases work:

make kselftest
make O=dir kselftest

I plan to get this into 4.15-rc1

thanks,
-- Shuah