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Subject: Re: [PATCH 1/8] media: hantro: Trace hevc hw cycles performance
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To:     Hans Verkuil <hverkuil@xs4all.nl>, ezequiel@collabora.com,
        p.zabel@pengutronix.de, mchehab@kernel.org, shawnguo@kernel.org,
        s.hauer@pengutronix.de, festevam@gmail.com,
        gregkh@linuxfoundation.org, mripard@kernel.org,
        paul.kocialkowski@bootlin.com, wens@csie.org,
        jernej.skrabec@siol.net, emil.l.velikov@gmail.com,
        andrzej.p@collabora.com, jc@kynesim.co.uk
Cc:     kernel@pengutronix.de, linux-imx@nxp.com,
        linux-media@vger.kernel.org, linux-rockchip@lists.infradead.org,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org
References: <20210604130619.491200-1-benjamin.gaignard@collabora.com>
 <20210604130619.491200-2-benjamin.gaignard@collabora.com>
 <dbf5f5e1-4989-c97d-3679-58af549b5082@xs4all.nl>
 <4066d940-4337-0b3d-5329-72c72bc5b623@xs4all.nl>
From:   Benjamin Gaignard <benjamin.gaignard@collabora.com>
Message-ID: <d1655a57-1323-f8b9-1896-62bb8bca381f@collabora.com>
Date:   Mon, 14 Jun 2021 09:45:45 +0200
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Le 13/06/2021 à 11:55, Hans Verkuil a écrit :
> On 13/06/2021 11:53, Hans Verkuil wrote:
>> On 04/06/2021 15:06, Benjamin Gaignard wrote:
>>> After each hevc decoded frame trace the hardware performance.
>>> It provides the number of hw cycles spend per decoded macroblock.
>>>
>>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
>>> ---
>>>   drivers/staging/media/hantro/hantro_drv.c     |  3 ++
>>>   .../staging/media/hantro/hantro_g2_hevc_dec.c | 16 ++++++++
>>>   drivers/staging/media/hantro/hantro_g2_regs.h |  1 +
>>>   drivers/staging/media/hantro/hantro_hw.h      |  1 +
>>>   drivers/staging/media/hantro/imx8m_vpu_hw.c   |  1 +
>>>   drivers/staging/media/hantro/trace.h          | 40 +++++++++++++++++++
>> Can you rename this to hantro_trace.h? I prefer to have the driver prefix in the name.
> Ah, I accidentally replied to the v1, but the same comment applies to v2.

I have fix that, it will be in v3.
I just wait for more feedback before send it.

Thanks,
Benjamin

>
> Regards,
>
> 	Hans
>
>> Regards,
>>
>> 	Hans
>>
>>>   6 files changed, 62 insertions(+)
>>>   create mode 100644 drivers/staging/media/hantro/trace.h
>>>
>>> diff --git a/drivers/staging/media/hantro/hantro_drv.c b/drivers/staging/media/hantro/hantro_drv.c
>>> index dbc69ee0b562..6053c86b1c3f 100644
>>> --- a/drivers/staging/media/hantro/hantro_drv.c
>>> +++ b/drivers/staging/media/hantro/hantro_drv.c
>>> @@ -28,6 +28,9 @@
>>>   #include "hantro.h"
>>>   #include "hantro_hw.h"
>>>   
>>> +#define CREATE_TRACE_POINTS
>>> +#include "trace.h"
>>> +
>>>   #define DRIVER_NAME "hantro-vpu"
>>>   
>>>   int hantro_debug;
>>> diff --git a/drivers/staging/media/hantro/hantro_g2_hevc_dec.c b/drivers/staging/media/hantro/hantro_g2_hevc_dec.c
>>> index 340efb57fd18..89fac5146433 100644
>>> --- a/drivers/staging/media/hantro/hantro_g2_hevc_dec.c
>>> +++ b/drivers/staging/media/hantro/hantro_g2_hevc_dec.c
>>> @@ -7,6 +7,7 @@
>>>   
>>>   #include "hantro_hw.h"
>>>   #include "hantro_g2_regs.h"
>>> +#include "trace.h"
>>>   
>>>   #define HEVC_DEC_MODE	0xC
>>>   
>>> @@ -22,6 +23,21 @@ static inline void hantro_write_addr(struct hantro_dev *vpu,
>>>   	vdpu_write(vpu, addr & 0xffffffff, offset);
>>>   }
>>>   
>>> +void hantro_g2_hevc_dec_done(struct hantro_ctx *ctx)
>>> +{
>>> +	const struct hantro_hevc_dec_ctrls *ctrls = &ctx->hevc_dec.ctrls;
>>> +	const struct v4l2_ctrl_hevc_sps *sps = ctrls->sps;
>>> +	struct hantro_dev *vpu = ctx->dev;
>>> +	u32 hw_cycles = 0;
>>> +	u32 mbs = (sps->pic_width_in_luma_samples *
>>> +		   sps->pic_height_in_luma_samples) >> 8;
>>> +
>>> +	if (mbs)
>>> +		hw_cycles = vdpu_read(vpu, G2_HW_PERFORMANCE) / mbs;
>>> +
>>> +	trace_hantro_hevc_perf(ctx, hw_cycles);
>>> +}
>>> +
>>>   static void prepare_tile_info_buffer(struct hantro_ctx *ctx)
>>>   {
>>>   	struct hantro_dev *vpu = ctx->dev;
>>> diff --git a/drivers/staging/media/hantro/hantro_g2_regs.h b/drivers/staging/media/hantro/hantro_g2_regs.h
>>> index bb22fa921914..17d84ec9c5c2 100644
>>> --- a/drivers/staging/media/hantro/hantro_g2_regs.h
>>> +++ b/drivers/staging/media/hantro/hantro_g2_regs.h
>>> @@ -177,6 +177,7 @@
>>>   #define G2_REG_CONFIG_DEC_CLK_GATE_E		BIT(16)
>>>   #define G2_REG_CONFIG_DEC_CLK_GATE_IDLE_E	BIT(17)
>>>   
>>> +#define G2_HW_PERFORMANCE	(G2_SWREG(63))
>>>   #define G2_ADDR_DST		(G2_SWREG(65))
>>>   #define G2_REG_ADDR_REF(i)	(G2_SWREG(67)  + ((i) * 0x8))
>>>   #define G2_ADDR_DST_CHR		(G2_SWREG(99))
>>> diff --git a/drivers/staging/media/hantro/hantro_hw.h b/drivers/staging/media/hantro/hantro_hw.h
>>> index 5737a7707944..8fa0aacb61cd 100644
>>> --- a/drivers/staging/media/hantro/hantro_hw.h
>>> +++ b/drivers/staging/media/hantro/hantro_hw.h
>>> @@ -240,6 +240,7 @@ void hantro_h264_dec_exit(struct hantro_ctx *ctx);
>>>   int hantro_hevc_dec_init(struct hantro_ctx *ctx);
>>>   void hantro_hevc_dec_exit(struct hantro_ctx *ctx);
>>>   int hantro_g2_hevc_dec_run(struct hantro_ctx *ctx);
>>> +void hantro_g2_hevc_dec_done(struct hantro_ctx *ctx);
>>>   int hantro_hevc_dec_prepare_run(struct hantro_ctx *ctx);
>>>   dma_addr_t hantro_hevc_get_ref_buf(struct hantro_ctx *ctx, int poc);
>>>   void hantro_hevc_ref_remove_unused(struct hantro_ctx *ctx);
>>> diff --git a/drivers/staging/media/hantro/imx8m_vpu_hw.c b/drivers/staging/media/hantro/imx8m_vpu_hw.c
>>> index ea919bfb9891..7e9e24bb5057 100644
>>> --- a/drivers/staging/media/hantro/imx8m_vpu_hw.c
>>> +++ b/drivers/staging/media/hantro/imx8m_vpu_hw.c
>>> @@ -239,6 +239,7 @@ static const struct hantro_codec_ops imx8mq_vpu_g2_codec_ops[] = {
>>>   		.reset = imx8m_vpu_g2_reset,
>>>   		.init = hantro_hevc_dec_init,
>>>   		.exit = hantro_hevc_dec_exit,
>>> +		.done = hantro_g2_hevc_dec_done,
>>>   	},
>>>   };
>>>   
>>> diff --git a/drivers/staging/media/hantro/trace.h b/drivers/staging/media/hantro/trace.h
>>> new file mode 100644
>>> index 000000000000..8abe5ddb4814
>>> --- /dev/null
>>> +++ b/drivers/staging/media/hantro/trace.h
>>> @@ -0,0 +1,40 @@
>>> +/* SPDX-License-Identifier: GPL-2.0 */
>>> +#undef TRACE_SYSTEM
>>> +#define TRACE_SYSTEM hantro
>>> +
>>> +#if !defined(__HANTRO_TRACE_H__) || defined(TRACE_HEADER_MULTI_READ)
>>> +#define __HANTRO_TRACE_H__
>>> +
>>> +#include <linux/tracepoint.h>
>>> +#include <media/videobuf2-v4l2.h>
>>> +
>>> +#include "hantro.h"
>>> +
>>> +TRACE_EVENT(hantro_hevc_perf,
>>> +	TP_PROTO(struct hantro_ctx *ctx, u32 hw_cycles),
>>> +
>>> +	TP_ARGS(ctx, hw_cycles),
>>> +
>>> +	TP_STRUCT__entry(
>>> +		__field(int, minor)
>>> +		__field(u32, hw_cycles)
>>> +	),
>>> +
>>> +	TP_fast_assign(
>>> +		__entry->minor = ctx->fh.vdev->minor;
>>> +		__entry->hw_cycles = hw_cycles;
>>> +	),
>>> +
>>> +	TP_printk("minor = %d, %8d cycles / mb",
>>> +		  __entry->minor, __entry->hw_cycles)
>>> +);
>>> +
>>> +#endif /* __HANTRO_TRACE_H__ */
>>> +
>>> +#undef TRACE_INCLUDE_PATH
>>> +#define TRACE_INCLUDE_PATH ../../drivers/staging/media/hantro
>>> +#undef TRACE_INCLUDE_FILE
>>> +#define TRACE_INCLUDE_FILE trace
>>> +
>>> +/* This part must be outside protection */
>>> +#include <trace/define_trace.h>
>>>