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Date: Thu, 8 Jun 2023 16:06:48 +0200
From: AngeloGioacchino Del Regno
<angelogioacchino.delregno@...labora.com>
To: Nicolas Dufresne <nicolas.dufresne@...labora.com>,
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>,
"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 v2,04/10] media: mediatek: vcodec: remove the dependency
of debug log
Il 08/06/23 15:11, Nicolas Dufresne ha scritto:
> Le jeudi 08 juin 2023 à 07:27 +0000, Yunfei Dong (董云飞) a écrit :
>> Hi Nicolas,
>>
>> Thanks for your review.
>> On Wed, 2023-06-07 at 21:41 -0400, Nicolas Dufresne wrote:
>>>
>>> External email : Please do not click links or open attachments until
>>> you have verified the sender or the content.
>>> Hi Yunfei,
>>>
>>> Le mercredi 07 juin 2023 à 16:48 +0800, Yunfei Dong a écrit :
>>>> '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 | 26 ++-
>>>> .../vcodec/vdec/vdec_av1_req_lat_if.c | 105 +++++++-----
>>>> .../mediatek/vcodec/vdec/vdec_h264_if.c | 62 ++++---
>>>> .../mediatek/vcodec/vdec/vdec_h264_req_if.c | 39 +++--
>>>> .../vcodec/vdec/vdec_h264_req_multi_if.c | 80 +++++----
>>>> .../vcodec/vdec/vdec_hevc_req_multi_if.c | 67 ++++----
>>>> .../mediatek/vcodec/vdec/vdec_vp8_if.c | 54 ++++---
>>>> .../mediatek/vcodec/vdec/vdec_vp8_req_if.c | 46 +++---
>>>> .../mediatek/vcodec/vdec/vdec_vp9_if.c | 152 ++++++++++--
>>> ------
>>>> .../vcodec/vdec/vdec_vp9_req_lat_if.c | 84 ++++++----
>>>> .../platform/mediatek/vcodec/vdec_vpu_if.c | 59 ++++---
>>>> .../mediatek/vcodec/venc/venc_h264_if.c | 86 +++++-----
>>>> .../mediatek/vcodec/venc/venc_vp8_if.c | 48 +++---
>>>> .../platform/mediatek/vcodec/venc_vpu_if.c | 64 ++++----
>>>> 14 files changed, 565 insertions(+), 407 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..ddc12c3e2983 100644
>>>> --- a/drivers/media/platform/mediatek/vcodec/mtk_vcodec_util.h
>>>> +++ b/drivers/media/platform/mediatek/vcodec/mtk_vcodec_util.h
>>>> @@ -31,9 +31,8 @@ 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(plat_dev, inst_id, fmt,
>>> args...) \
>>>> +dev_err(&(plat_dev)->dev, "[MTK_VCODEC][ERROR][%d]: " fmt "\n",
>>> inst_id, ##args)
>>>>
>>>> #if defined(CONFIG_DEBUG_FS)
>>>> extern int mtk_v4l2_dbg_level;
>>>> @@ -46,27 +45,24 @@ extern int mtk_vcodec_dbg;
>>>> __func__, __LINE__, ##args); \
>>>> } while (0)
>>>>
>>>> -#define mtk_vcodec_debug(h, fmt, args...) \
>>>> -do { \
>>>> -if (mtk_vcodec_dbg) \
>>>> -dev_dbg(&(((struct mtk_vcodec_ctx *)(h)->ctx)->dev->plat_dev-
>>>> dev), \
>>>> -"[MTK_VCODEC][%d]: %s, %d " fmt "\n", \
>>>> -((struct mtk_vcodec_ctx *)(h)->ctx)->id, \
>>>> -__func__, __LINE__, ##args); \
>>>> +#define mtk_vcodec_debug(plat_dev, inst_id, fmt,
>>> args...) \
>>>> +do
>>> {
>>> \
>>>> +if
>>> (mtk_vcodec_dbg)
>>> \
>>>> +dev_dbg(&(plat_dev)->dev, "[MTK_VCODEC][%d]: %s, %d " fmt "\n", \
>>>
>>> At least in this patch, you systematically pass plat_dev as
>>> <something>->ctx->dev->plat_dev, which is quite long and verbose, any
>>> reason we
>>> can't just pass that <something> here ? We can follow the same
>>> structure path
>>> for both encoder/decoder ?
>>>
>>
>> In order to separate encode and decoder, need to define two different
>> struct mtk_vcodec_dec_ctx and struct mtk_vcodec_enc_ctx.
>>
>> struct mtk_vcodec_ctx won't be used again, need to use platform device
>> to print dev_dbg and dev_err.
>>
>> encoder and decoder using the same interface to print log message.
>
> Just a reminder, I'm just making suggestions, there is no strict action required
> here other then a discussion to try and make the logging a bit more light.
>
> My points was that C macros don't care about types, so if you keep the path to
> the platform device the same (ctx->dev->plat_dev), you could just pass the ctx
> as argument. What I don't know though myself, is if this is actually feasible in
> all code path, but considering you had access to the instance previously, I
> thought it should.
>
One macro used to access two different structures?
Please, no.
Regards,
Angelo
> regards,
> Nicolas
>
>>
>> Best Regards,
>> Yunfei Dong
>>>> +inst_id, __func__, __LINE__, ##args); \
>>>> } while (0)
>>>> #else
>>>> #define mtk_v4l2_debug(level, fmt, args...) pr_debug(fmt, ##args)
>>>>
>>>> -#define mtk_vcodec_debug(h, fmt, args...)\
>>>> -pr_debug("[MTK_VCODEC][%d]: " fmt "\n",\
>>>
>> ...snip...
>
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