linux-kernel - Re: [PATCH 4/8] mediatek: vcodec: remove the dependency of debug log

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Date:   Thu, 1 Jun 2023 12:08:58 +0200
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
To:     Yunfei Dong (董云飞) 
        <Yunfei.Dong@...iatek.com>,
        "nhebert@...omium.org" <nhebert@...omium.org>,
        "wenst@...omium.org" <wenst@...omium.org>,
        "nfraprado@...labora.com" <nfraprado@...labora.com>,
        "benjamin.gaignard@...labora.com" <benjamin.gaignard@...labora.com>,
        "nicolas.dufresne@...labora.com" <nicolas.dufresne@...labora.com>,
        "hverkuil-cisco@...all.nl" <hverkuil-cisco@...all.nl>
Cc:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-mediatek@...ts.infradead.org" 
        <linux-mediatek@...ts.infradead.org>,
        "frkoenig@...omium.org" <frkoenig@...omium.org>,
        "stevecho@...omium.org" <stevecho@...omium.org>,
        "linux-media@...r.kernel.org" <linux-media@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "daniel@...ll.ch" <daniel@...ll.ch>,
        Project_Global_Chrome_Upstream_Group 
        <Project_Global_Chrome_Upstream_Group@...iatek.com>,
        "hsinyi@...omium.org" <hsinyi@...omium.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH 4/8] mediatek: vcodec: remove the dependency of debug log

Il 01/06/23 11:52, Yunfei Dong (董云飞) ha scritto:
> Hi AngeloGioacchino,
> 
> Thanks for your suggestion.
> On Thu, 2023-06-01 at 11:29 +0200, AngeloGioacchino Del Regno wrote:
>>   	
>> External email : Please do not click links or open attachments until
>> you have verified the sender or the content.
>>   Il 01/06/23 05:02, Yunfei Dong ha scritto:
>>> 'mtk_vcodec_debug' and 'mtk_vcodec_err' depends on 'mtk_vcodec_ctx'
>>> to get the index of each instance, using the index directly instead
>>> of with 'mtk_vcodec_ctx'.
>>>
>>> Signed-off-by: Yunfei Dong <yunfei.dong@...iatek.com>
>>> ---
>>>    .../mediatek/vcodec/mtk_vcodec_util.h         |  36 +++--
>>>    .../vcodec/vdec/vdec_av1_req_lat_if.c         |  78 +++++------
>>>    .../mediatek/vcodec/vdec/vdec_h264_if.c       |  46 +++----
>>>    .../mediatek/vcodec/vdec/vdec_h264_req_if.c   |  32 ++---
>>>    .../vcodec/vdec/vdec_h264_req_multi_if.c      |  62 ++++-----
>>>    .../vcodec/vdec/vdec_hevc_req_multi_if.c      |  54 ++++----
>>>    .../mediatek/vcodec/vdec/vdec_vp8_if.c        |  38 +++---
>>>    .../mediatek/vcodec/vdec/vdec_vp8_req_if.c    |  36 ++---
>>>    .../mediatek/vcodec/vdec/vdec_vp9_if.c        | 128 +++++++++--
>> -------
>>>    .../vcodec/vdec/vdec_vp9_req_lat_if.c         |  67 ++++-----
>>>    .../platform/mediatek/vcodec/vdec_vpu_if.c    |  48 +++----
>>>    .../mediatek/vcodec/venc/venc_h264_if.c       |  74 +++++-----
>>>    .../mediatek/vcodec/venc/venc_vp8_if.c        |  44 +++---
>>>    .../platform/mediatek/vcodec/venc_vpu_if.c    |  54 ++++----
>>>    14 files changed, 399 insertions(+), 398 deletions(-)
>>>
>>> diff --git
>> a/drivers/media/platform/mediatek/vcodec/mtk_vcodec_util.h
>> b/drivers/media/platform/mediatek/vcodec/mtk_vcodec_util.h
>>> index ecb0bdf3a4f4..f018af38b39d 100644
>>> --- a/drivers/media/platform/mediatek/vcodec/mtk_vcodec_util.h
>>> +++ b/drivers/media/platform/mediatek/vcodec/mtk_vcodec_util.h
>>> @@ -31,42 +31,38 @@ struct mtk_vcodec_dev;
>>>    #define mtk_v4l2_err(fmt, args...)                \
>>>    pr_err("[MTK_V4L2][ERROR] " fmt "\n", ##args)
>>>    
>>> -#define mtk_vcodec_err(h, fmt, args...)\
>>> -pr_err("[MTK_VCODEC][ERROR][%d]: " fmt "\n",\
>>> -       ((struct mtk_vcodec_ctx *)(h)->ctx)->id, ##args)
>>> +#define mtk_vcodec_err(inst_id, fmt,
>> args...)                          \
>>> +pr_err("[MTK_VCODEC][ERROR][%d]: " fmt "\n", inst_id, ##args)
>>>    
>>
>> This *huge* cleanup (congrats btw!) would be a great occasion to
>> change those
>> pr_err() to dev_err(). Can we do that?
>>
> 
> Can change pr_err to dev_err, but need to add one extra parameter "dev"

Yes I'm aware of the fact that you have to add a `dev` extra param, of course.

> in mtk_vcodec_err. Whether need to change mtk_vcodec_debug?
> 

Yes please, change everything you can to use dev_* prints, that'd be great.

Cheers!

>> Regards,
>> Angelo
>>
> Best Regards,
> Yunfei Dong