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Message-ID: <9e973cfd-5c12-26e9-d28e-0305cae1c5c5@collabora.com>
Date: Wed, 1 Sep 2021 13:33:52 +0200
From: Benjamin Gaignard <benjamin.gaignard@...labora.com>
To: Hans Verkuil <hverkuil@...all.nl>, mchehab@...nel.org,
p.zabel@...gutronix.de, gregkh@...uxfoundation.org,
shawnguo@...nel.org, s.hauer@...gutronix.de, kernel@...gutronix.de,
festevam@...il.com, linux-imx@....com
Cc: linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-rockchip@...ts.infradead.org, linux-staging@...ts.linux.dev,
linux-arm-kernel@...ts.infradead.org, kernel@...labora.com,
Ezequiel Garcia <elezegarcia@...il.com>
Subject: Re: [PATCH] media: hantro: Trace hevc hw cycles performance register
Le 01/09/2021 à 13:27, Hans Verkuil a écrit :
> Hi Benjamin,
>
> I'm confused: this is also part of '[PATCH v4 0/9] Additional features for Hantro HEVC', so
> do you want to merge this independently from that series? Are there differences between v4 1/9
> and this patch, or are they identical?
Hi Hans,
I thought that the series was to big so I decide to split it on smallest independent pieces.
>
> In any case, I'd like to have a Reviewed-by or Acked-by from Ezequiel before merging this.
Get Ezequiel feedback is definitively need :-)
Regards,
Benjamin
>
> Regards,
>
> Hans
>
> On 23/08/2021 15:56, 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@...labora.com>
>> ---
>> Documentation/admin-guide/media/hantro.rst | 14 +++++++
>> .../admin-guide/media/v4l-drivers.rst | 1 +
>> 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/hantro_trace.h | 41 +++++++++++++++++++
>> drivers/staging/media/hantro/imx8m_vpu_hw.c | 1 +
>> 8 files changed, 78 insertions(+)
>> create mode 100644 Documentation/admin-guide/media/hantro.rst
>> create mode 100644 drivers/staging/media/hantro/hantro_trace.h
>>
>> diff --git a/Documentation/admin-guide/media/hantro.rst b/Documentation/admin-guide/media/hantro.rst
>> new file mode 100644
>> index 000000000000..6cb552a5dfcb
>> --- /dev/null
>> +++ b/Documentation/admin-guide/media/hantro.rst
>> @@ -0,0 +1,14 @@
>> +.. SPDX-License-Identifier: GPL-2.0
>> +
>> +=================
>> +The hantro driver
>> +=================
>> +
>> +Trace
>> +~~~~~
>> +
>> +You can trace the hardware decoding performances by using event tracing::
>> +
>> + # echo hantro_hevc_perf >> /sys/kernel/debug/tracing/set_event
>> +
>> +That will keep a log of the number of hardware cycles spend per decoded macroblock
>> diff --git a/Documentation/admin-guide/media/v4l-drivers.rst b/Documentation/admin-guide/media/v4l-drivers.rst
>> index 9c7ebe2ca3bd..4f2f72a2b3b5 100644
>> --- a/Documentation/admin-guide/media/v4l-drivers.rst
>> +++ b/Documentation/admin-guide/media/v4l-drivers.rst
>> @@ -15,6 +15,7 @@ Video4Linux (V4L) driver-specific documentation
>> cx88
>> davinci-vpbe
>> fimc
>> + hantro
>> imx
>> imx7
>> ipu3
>> diff --git a/drivers/staging/media/hantro/hantro_drv.c b/drivers/staging/media/hantro/hantro_drv.c
>> index 8a2edd67f2c6..236160c51e59 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 "hantro_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..fef16d1724da 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 "hantro_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 df7b5e3a57b9..ab6f379354cc 100644
>> --- a/drivers/staging/media/hantro/hantro_hw.h
>> +++ b/drivers/staging/media/hantro/hantro_hw.h
>> @@ -250,6 +250,7 @@ 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/hantro_trace.h b/drivers/staging/media/hantro/hantro_trace.h
>> new file mode 100644
>> index 000000000000..fa8fec26fa3c
>> --- /dev/null
>> +++ b/drivers/staging/media/hantro/hantro_trace.h
>> @@ -0,0 +1,41 @@
>> +/* SPDX-License-Identifier: GPL-2.0 */
>> +#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"
>> +
>> +#undef TRACE_SYSTEM
>> +#define TRACE_SYSTEM hantro
>> +#define TRACE_INCLUDE_FILE hantro_trace
>> +
>> +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(struct v4l2_fh *, fh)
>> + __field(u32, hw_cycles)
>> + ),
>> +
>> + TP_fast_assign(
>> + __entry->minor = ctx->fh.vdev->minor;
>> + __entry->fh = &ctx->fh;
>> + __entry->hw_cycles = hw_cycles;
>> + ),
>> +
>> + TP_printk("minor = %d, fh = %p, %8d cycles / mb",
>> + __entry->minor, __entry->fh, __entry->hw_cycles)
>> +);
>> +
>> +#endif /* __HANTRO_TRACE_H__ */
>> +
>> +#undef TRACE_INCLUDE_PATH
>> +#define TRACE_INCLUDE_PATH ../../drivers/staging/media/hantro
>> +
>> +/* This part must be outside protection */
>> +#include <trace/define_trace.h>
>> 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,
>> },
>> };
>>
>>
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