linux-kernel - Re: [RESEND][PATCH v8 0/5] DMA-BUF Heaps (destaging ION)

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Message-ID: <CALAqxLXyGeW=GH-FyEyt1KfZk-dcUP7DEdQsd8nMjvBhpSiHbg@mail.gmail.com>
Date:   Tue, 24 Sep 2019 09:28:05 -0700
From:   John Stultz <john.stultz@...aro.org>
To:     Ayan Halder <Ayan.Halder@....com>
Cc:     Sumit Semwal <sumit.semwal@...aro.org>,
        Sudipto Paul <Sudipto.Paul@....com>,
        Vincent Donnefort <Vincent.Donnefort@....com>,
        Chenbo Feng <fengc@...gle.com>,
        lkml <linux-kernel@...r.kernel.org>,
        Liam Mark <lmark@...eaurora.org>,
        "Andrew F . Davis" <afd@...com>,
        Christoph Hellwig <hch@...radead.org>,
        Alistair Strachan <astrachan@...gle.com>,
        DRI mailing list <dri-devel@...ts.freedesktop.org>,
        Hridya Valsaraju <hridya@...gle.com>,
        Pratik Patel <pratikp@...eaurora.org>, nd <nd@....com>
Subject: Re: [RESEND][PATCH v8 0/5] DMA-BUF Heaps (destaging ION)

On Tue, Sep 24, 2019 at 9:22 AM Ayan Halder <Ayan.Halder@....com> wrote:
> I tested these patches using our internal test suite with Arm,komeda
> driver and the following node in dts
>
>         reserved-memory {
>                 #address-cells = <0x2>;
>                 #size-cells = <0x2>;
>                 ranges;
>
>                 framebuffer@...00000 {
>                         compatible = "shared-dma-pool";
>                         linux,cma-default;
>                         reg = <0x0 0x60000000 0x0 0x8000000>;
>                 };
>         }
>
> The tests went fine. Our tests allocates framebuffers of different
> sizes, posts them on screen and the driver writes back to one of the
> framebuffers. I havenot tested for any performance, latency or
> cache management related stuff. So, it that looks appropriate, feel
> free to add:-
> Tested-by:- Ayan Kumar Halder <ayan.halder@....com>

Thanks so much for testing! I really appreciate it!

> Are you planning to write some igt tests for it ?

I've not personally as familiar with igt yet, which is why I started
with kselftest, but it's a good idea. I'll take a look and try to take
a swing at it after Sumit queues the patchset (I need to resubmit to
address Brian's feedback).

thanks
-john