linux-kernel - Re: [PATCH 11/33] iris: vidc: add helpers for memory management

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Date:   Tue, 15 Aug 2023 00:36:03 +0530
From:   Dikshita Agarwal <quic_dikshita@...cinc.com>
To:     Konrad Dybcio <konrad.dybcio@...aro.org>,
        Bjorn Andersson <quic_bjorande@...cinc.com>,
        Vikash Garodia <quic_vgarodia@...cinc.com>
CC:     <stanimir.k.varbanov@...il.com>, <agross@...nel.org>,
        <andersson@...nel.org>, <mchehab@...nel.org>,
        <hans.verkuil@...co.com>, <linux-kernel@...r.kernel.org>,
        <linux-media@...r.kernel.org>, <linux-arm-msm@...r.kernel.org>
Subject: Re: [PATCH 11/33] iris: vidc: add helpers for memory management



On 7/28/2023 10:52 PM, Konrad Dybcio wrote:
> On 28.07.2023 18:28, Bjorn Andersson wrote:
>> On Fri, Jul 28, 2023 at 06:53:22PM +0530, Vikash Garodia wrote:
>>> diff --git a/drivers/media/platform/qcom/iris/vidc/src/msm_vidc_memory.c b/drivers/media/platform/qcom/iris/vidc/src/msm_vidc_memory.c
>> [..]
>>> +static const struct msm_vidc_memory_ops msm_mem_ops = {
>>> +	.dma_buf_get                    = msm_vidc_dma_buf_get,
>>> +	.dma_buf_put                    = msm_vidc_dma_buf_put,
>>> +	.dma_buf_put_completely         = msm_vidc_dma_buf_put_completely,
>>> +	.dma_buf_attach                 = msm_vidc_dma_buf_attach,
>>> +	.dma_buf_detach                 = msm_vidc_dma_buf_detach,
>>> +	.dma_buf_map_attachment         = msm_vidc_dma_buf_map_attachment,
>>> +	.dma_buf_unmap_attachment       = msm_vidc_dma_buf_unmap_attachment,
>>> +	.memory_alloc_map               = msm_vidc_memory_alloc_map,
>>> +	.memory_unmap_free              = msm_vidc_memory_unmap_free,
>>> +	.buffer_region                  = msm_vidc_buffer_region,
>>
>> Will there ever be more than one implementation of the
>> msm_vidc_memory_ops?
>>
>> Unless there's a really strong reason, just call the functions directly
>> without the function pointers and call_mem_op(), this will be slightly
>> faster, but more importantly it allows for much faster navigation of the
>> code base.
> Same for HFI ops
Hi Konrad,
There are no HFI ops in this driver, are you referring to anything else
here, could you please point me to it?
> 
> Konrad