Message-ID: <20180724190652.2befcaf6@coco.lan>
Date:   Tue, 24 Jul 2018 19:06:52 -0300
From:   Mauro Carvalho Chehab <mchehab+samsung@...nel.org>
To:     Dmitry Osipenko <digetx@...il.com>
Cc:     Hans Verkuil <hverkuil@...all.nl>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        linux-tegra@...r.kernel.org, linux-media@...r.kernel.org,
        devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1] media: staging: tegra-vde: Replace debug messages
 with trace points

Em Sat,  7 Jul 2018 19:20:49 +0300
Dmitry Osipenko <digetx@...il.com> escreveu:

> Trace points are much more efficient than debug messages for extensive
> tracing and could be conveniently enabled / disabled dynamically, hence
> let's replace debug messages with the trace points.

This patch require some work:

$ make ARCH=i386  CF=-D__CHECK_ENDIAN__ CONFIG_DEBUG_SECTION_MISMATCH=y C=1 W=1 CHECK='compile_checks' M=drivers/staging/media

./include/linux/slab.h:631:13: error: undefined identifier '__builtin_mul_overflow'
./include/linux/slab.h:631:13: warning: call with no type!
fixdep: error opening file: drivers/staging/media/tegra-vde/trace.h: No such file or directory



> 
> Signed-off-by: Dmitry Osipenko <digetx@...il.com>
> ---
>  drivers/staging/media/tegra-vde/tegra-vde.c | 221 +++++++++++---------
>  drivers/staging/media/tegra-vde/trace.h     | 101 +++++++++
>  2 files changed, 227 insertions(+), 95 deletions(-)
>  create mode 100644 drivers/staging/media/tegra-vde/trace.h
> 
> diff --git a/drivers/staging/media/tegra-vde/tegra-vde.c b/drivers/staging/media/tegra-vde/tegra-vde.c
> index 6f06061a40d9..3f71b46d287b 100644
> --- a/drivers/staging/media/tegra-vde/tegra-vde.c
> +++ b/drivers/staging/media/tegra-vde/tegra-vde.c
> @@ -24,6 +24,8 @@
>  
>  #include <soc/tegra/pmc.h>
>  
> +#define CREATE_TRACE_POINTS
> +#include "trace.h"
>  #include "uapi.h"
>  
>  #define ICMDQUE_WR		0x00
> @@ -35,14 +37,6 @@
>  #define BSE_ICMDQUE_EMPTY	BIT(3)
>  #define BSE_DMA_BUSY		BIT(23)
>  
> -#define VDE_WR(__data, __addr)				\
> -do {							\
> -	dev_dbg(vde->miscdev.parent,			\
> -		"%s: %d: 0x%08X => " #__addr ")\n",	\
> -		__func__, __LINE__, (u32)(__data));	\
> -	writel_relaxed(__data, __addr);			\
> -} while (0)
> -
>  struct video_frame {
>  	struct dma_buf_attachment *y_dmabuf_attachment;
>  	struct dma_buf_attachment *cb_dmabuf_attachment;
> @@ -81,12 +75,63 @@ struct tegra_vde {
>  	u32 *iram;
>  };
>  
> +static __maybe_unused
> +char const *tegra_vde_reg_base_name(struct tegra_vde *vde, void __iomem *base)
> +{
> +	if (vde->sxe == base)
> +		return "SXE";
> +
> +	if (vde->bsev == base)
> +		return "BSEV";
> +
> +	if (vde->mbe == base)
> +		return "MBE";
> +
> +	if (vde->ppe == base)
> +		return "PPE";
> +
> +	if (vde->mce == base)
> +		return "MCE";
> +
> +	if (vde->tfe == base)
> +		return "TFE";
> +
> +	if (vde->ppb == base)
> +		return "PPB";
> +
> +	if (vde->vdma == base)
> +		return "VDMA";
> +
> +	if (vde->frameid == base)
> +		return "FRAMEID";
> +
> +	return "???";
> +}
> +
> +static void tegra_vde_writel(struct tegra_vde *vde,
> +			     u32 value, void __iomem *base, u32 offset)
> +{
> +	trace_vde_writel(vde, base, offset, value);
> +
> +	writel_relaxed(value, base + offset);
> +}
> +
> +static u32 tegra_vde_readl(struct tegra_vde *vde,
> +			   void __iomem *base, u32 offset)
> +{
> +	u32 value = readl_relaxed(base + offset);
> +
> +	trace_vde_readl(vde, base, offset, value);
> +
> +	return value;
> +}
> +
>  static void tegra_vde_set_bits(struct tegra_vde *vde,
> -			       u32 mask, void __iomem *regs)
> +			       u32 mask, void __iomem *base, u32 offset)
>  {
> -	u32 value = readl_relaxed(regs);
> +	u32 value = tegra_vde_readl(vde, base, offset);
>  
> -	VDE_WR(value | mask, regs);
> +	tegra_vde_writel(vde, value | mask, base, offset);
>  }
>  
>  static int tegra_vde_wait_mbe(struct tegra_vde *vde)
> @@ -107,8 +152,8 @@ static int tegra_vde_setup_mbe_frame_idx(struct tegra_vde *vde,
>  	unsigned int idx;
>  	int err;
>  
> -	VDE_WR(0xD0000000 | (0 << 23), vde->mbe + 0x80);
> -	VDE_WR(0xD0200000 | (0 << 23), vde->mbe + 0x80);
> +	tegra_vde_writel(vde, 0xD0000000 | (0 << 23), vde->mbe, 0x80);
> +	tegra_vde_writel(vde, 0xD0200000 | (0 << 23), vde->mbe, 0x80);
>  
>  	err = tegra_vde_wait_mbe(vde);
>  	if (err)
> @@ -118,8 +163,10 @@ static int tegra_vde_setup_mbe_frame_idx(struct tegra_vde *vde,
>  		return 0;
>  
>  	for (idx = 0, frame_idx = 1; idx < refs_nb; idx++, frame_idx++) {
> -		VDE_WR(0xD0000000 | (frame_idx << 23), vde->mbe + 0x80);
> -		VDE_WR(0xD0200000 | (frame_idx << 23), vde->mbe + 0x80);
> +		tegra_vde_writel(vde, 0xD0000000 | (frame_idx << 23),
> +				 vde->mbe, 0x80);
> +		tegra_vde_writel(vde, 0xD0200000 | (frame_idx << 23),
> +				 vde->mbe, 0x80);
>  
>  		frame_idx_enb_mask |= frame_idx << (6 * (idx % 4));
>  
> @@ -128,7 +175,7 @@ static int tegra_vde_setup_mbe_frame_idx(struct tegra_vde *vde,
>  			value |= (idx >> 2) << 24;
>  			value |= frame_idx_enb_mask;
>  
> -			VDE_WR(value, vde->mbe + 0x80);
> +			tegra_vde_writel(vde, value, vde->mbe, 0x80);
>  
>  			err = tegra_vde_wait_mbe(vde);
>  			if (err)
> @@ -143,8 +190,10 @@ static int tegra_vde_setup_mbe_frame_idx(struct tegra_vde *vde,
>  
>  static void tegra_vde_mbe_set_0xa_reg(struct tegra_vde *vde, int reg, u32 val)
>  {
> -	VDE_WR(0xA0000000 | (reg << 24) | (val & 0xFFFF), vde->mbe + 0x80);
> -	VDE_WR(0xA0000000 | ((reg + 1) << 24) | (val >> 16), vde->mbe + 0x80);
> +	tegra_vde_writel(vde, 0xA0000000 | (reg << 24) | (val & 0xFFFF),
> +			 vde->mbe, 0x80);
> +	tegra_vde_writel(vde, 0xA0000000 | ((reg + 1) << 24) | (val >> 16),
> +			 vde->mbe, 0x80);
>  }
>  
>  static int tegra_vde_wait_bsev(struct tegra_vde *vde, bool wait_dma)
> @@ -183,7 +232,7 @@ static int tegra_vde_wait_bsev(struct tegra_vde *vde, bool wait_dma)
>  static int tegra_vde_push_to_bsev_icmdqueue(struct tegra_vde *vde,
>  					    u32 value, bool wait_dma)
>  {
> -	VDE_WR(value, vde->bsev + ICMDQUE_WR);
> +	tegra_vde_writel(vde, value, vde->bsev, ICMDQUE_WR);
>  
>  	return tegra_vde_wait_bsev(vde, wait_dma);
>  }
> @@ -199,11 +248,11 @@ static void tegra_vde_setup_frameid(struct tegra_vde *vde,
>  	u32 value1 = frame ? ((mbs_width << 16) | mbs_height) : 0;
>  	u32 value2 = frame ? ((((mbs_width + 1) >> 1) << 6) | 1) : 0;
>  
> -	VDE_WR(y_addr  >> 8, vde->frameid + 0x000 + frameid * 4);
> -	VDE_WR(cb_addr >> 8, vde->frameid + 0x100 + frameid * 4);
> -	VDE_WR(cr_addr >> 8, vde->frameid + 0x180 + frameid * 4);
> -	VDE_WR(value1,       vde->frameid + 0x080 + frameid * 4);
> -	VDE_WR(value2,       vde->frameid + 0x280 + frameid * 4);
> +	tegra_vde_writel(vde, y_addr  >> 8, vde->frameid, 0x000 + frameid * 4);
> +	tegra_vde_writel(vde, cb_addr >> 8, vde->frameid, 0x100 + frameid * 4);
> +	tegra_vde_writel(vde, cr_addr >> 8, vde->frameid, 0x180 + frameid * 4);
> +	tegra_vde_writel(vde, value1,       vde->frameid, 0x080 + frameid * 4);
> +	tegra_vde_writel(vde, value2,       vde->frameid, 0x280 + frameid * 4);
>  }
>  
>  static void tegra_setup_frameidx(struct tegra_vde *vde,
> @@ -228,8 +277,7 @@ static void tegra_vde_setup_iram_entry(struct tegra_vde *vde,
>  {
>  	u32 *iram_tables = vde->iram;
>  
> -	dev_dbg(vde->miscdev.parent, "IRAM table %u: row %u: 0x%08X 0x%08X\n",
> -		table, row, value1, value2);
> +	trace_vde_setup_iram_entry(table, row, value1, value2);
>  
>  	iram_tables[0x20 * table + row * 2] = value1;
>  	iram_tables[0x20 * table + row * 2 + 1] = value2;
> @@ -245,10 +293,7 @@ static void tegra_vde_setup_iram_tables(struct tegra_vde *vde,
>  	int with_later_poc_nb;
>  	unsigned int i, k;
>  
> -	dev_dbg(vde->miscdev.parent, "DPB: Frame 0: frame_num = %d\n",
> -		dpb_frames[0].frame_num);
> -
> -	dev_dbg(vde->miscdev.parent, "REF L0:\n");
> +	trace_vde_ref_l0(dpb_frames[0].frame_num);
>  
>  	for (i = 0; i < 16; i++) {
>  		if (i < ref_frames_nb) {
> @@ -260,11 +305,6 @@ static void tegra_vde_setup_iram_tables(struct tegra_vde *vde,
>  			value |= !(frame->flags & FLAG_B_FRAME) << 25;
>  			value |= 1 << 24;
>  			value |= frame->frame_num;
> -
> -			dev_dbg(vde->miscdev.parent,
> -				"\tFrame %d: frame_num = %d B_frame = %d\n",
> -				i + 1, frame->frame_num,
> -				(frame->flags & FLAG_B_FRAME));
>  		} else {
>  			aux_addr = 0x6ADEAD00;
>  			value = 0;
> @@ -284,9 +324,7 @@ static void tegra_vde_setup_iram_tables(struct tegra_vde *vde,
>  
>  	with_later_poc_nb = ref_frames_nb - with_earlier_poc_nb;
>  
> -	dev_dbg(vde->miscdev.parent,
> -		"REF L1: with_later_poc_nb %d with_earlier_poc_nb %d\n",
> -		 with_later_poc_nb, with_earlier_poc_nb);
> +	trace_vde_ref_l1(with_later_poc_nb, with_earlier_poc_nb);
>  
>  	for (i = 0, k = with_earlier_poc_nb; i < with_later_poc_nb; i++, k++) {
>  		frame = &dpb_frames[k + 1];
> @@ -298,10 +336,6 @@ static void tegra_vde_setup_iram_tables(struct tegra_vde *vde,
>  		value |= 1 << 24;
>  		value |= frame->frame_num;
>  
> -		dev_dbg(vde->miscdev.parent,
> -			"\tFrame %d: frame_num = %d\n",
> -			k + 1, frame->frame_num);
> -
>  		tegra_vde_setup_iram_entry(vde, 2, i, value, aux_addr);
>  	}
>  
> @@ -315,10 +349,6 @@ static void tegra_vde_setup_iram_tables(struct tegra_vde *vde,
>  		value |= 1 << 24;
>  		value |= frame->frame_num;
>  
> -		dev_dbg(vde->miscdev.parent,
> -			"\tFrame %d: frame_num = %d\n",
> -			k + 1, frame->frame_num);
> -
>  		tegra_vde_setup_iram_entry(vde, 2, i, value, aux_addr);
>  	}
>  }
> @@ -334,32 +364,32 @@ static int tegra_vde_setup_hw_context(struct tegra_vde *vde,
>  	u32 value;
>  	int err;
>  
> -	tegra_vde_set_bits(vde, 0x000A, vde->sxe + 0xF0);
> -	tegra_vde_set_bits(vde, 0x000B, vde->bsev + CMDQUE_CONTROL);
> -	tegra_vde_set_bits(vde, 0x8002, vde->mbe + 0x50);
> -	tegra_vde_set_bits(vde, 0x000A, vde->mbe + 0xA0);
> -	tegra_vde_set_bits(vde, 0x000A, vde->ppe + 0x14);
> -	tegra_vde_set_bits(vde, 0x000A, vde->ppe + 0x28);
> -	tegra_vde_set_bits(vde, 0x0A00, vde->mce + 0x08);
> -	tegra_vde_set_bits(vde, 0x000A, vde->tfe + 0x00);
> -	tegra_vde_set_bits(vde, 0x0005, vde->vdma + 0x04);
> -
> -	VDE_WR(0x00000000, vde->vdma + 0x1C);
> -	VDE_WR(0x00000000, vde->vdma + 0x00);
> -	VDE_WR(0x00000007, vde->vdma + 0x04);
> -	VDE_WR(0x00000007, vde->frameid + 0x200);
> -	VDE_WR(0x00000005, vde->tfe + 0x04);
> -	VDE_WR(0x00000000, vde->mbe + 0x84);
> -	VDE_WR(0x00000010, vde->sxe + 0x08);
> -	VDE_WR(0x00000150, vde->sxe + 0x54);
> -	VDE_WR(0x0000054C, vde->sxe + 0x58);
> -	VDE_WR(0x00000E34, vde->sxe + 0x5C);
> -	VDE_WR(0x063C063C, vde->mce + 0x10);
> -	VDE_WR(0x0003FC00, vde->bsev + INTR_STATUS);
> -	VDE_WR(0x0000150D, vde->bsev + BSE_CONFIG);
> -	VDE_WR(0x00000100, vde->bsev + BSE_INT_ENB);
> -	VDE_WR(0x00000000, vde->bsev + 0x98);
> -	VDE_WR(0x00000060, vde->bsev + 0x9C);
> +	tegra_vde_set_bits(vde, 0x000A, vde->sxe, 0xF0);
> +	tegra_vde_set_bits(vde, 0x000B, vde->bsev, CMDQUE_CONTROL);
> +	tegra_vde_set_bits(vde, 0x8002, vde->mbe, 0x50);
> +	tegra_vde_set_bits(vde, 0x000A, vde->mbe, 0xA0);
> +	tegra_vde_set_bits(vde, 0x000A, vde->ppe, 0x14);
> +	tegra_vde_set_bits(vde, 0x000A, vde->ppe, 0x28);
> +	tegra_vde_set_bits(vde, 0x0A00, vde->mce, 0x08);
> +	tegra_vde_set_bits(vde, 0x000A, vde->tfe, 0x00);
> +	tegra_vde_set_bits(vde, 0x0005, vde->vdma, 0x04);
> +
> +	tegra_vde_writel(vde, 0x00000000, vde->vdma, 0x1C);
> +	tegra_vde_writel(vde, 0x00000000, vde->vdma, 0x00);
> +	tegra_vde_writel(vde, 0x00000007, vde->vdma, 0x04);
> +	tegra_vde_writel(vde, 0x00000007, vde->frameid, 0x200);
> +	tegra_vde_writel(vde, 0x00000005, vde->tfe, 0x04);
> +	tegra_vde_writel(vde, 0x00000000, vde->mbe, 0x84);
> +	tegra_vde_writel(vde, 0x00000010, vde->sxe, 0x08);
> +	tegra_vde_writel(vde, 0x00000150, vde->sxe, 0x54);
> +	tegra_vde_writel(vde, 0x0000054C, vde->sxe, 0x58);
> +	tegra_vde_writel(vde, 0x00000E34, vde->sxe, 0x5C);
> +	tegra_vde_writel(vde, 0x063C063C, vde->mce, 0x10);
> +	tegra_vde_writel(vde, 0x0003FC00, vde->bsev, INTR_STATUS);
> +	tegra_vde_writel(vde, 0x0000150D, vde->bsev, BSE_CONFIG);
> +	tegra_vde_writel(vde, 0x00000100, vde->bsev, BSE_INT_ENB);
> +	tegra_vde_writel(vde, 0x00000000, vde->bsev, 0x98);
> +	tegra_vde_writel(vde, 0x00000060, vde->bsev, 0x9C);
>  
>  	memset(vde->iram + 128, 0, macroblocks_nb / 2);
>  
> @@ -376,13 +406,13 @@ static int tegra_vde_setup_hw_context(struct tegra_vde *vde,
>  	 */
>  	wmb();
>  
> -	VDE_WR(0x00000000, vde->bsev + 0x8C);
> -	VDE_WR(bitstream_data_addr + bitstream_data_size,
> -	       vde->bsev + 0x54);
> +	tegra_vde_writel(vde, 0x00000000, vde->bsev, 0x8C);
> +	tegra_vde_writel(vde, bitstream_data_addr + bitstream_data_size,
> +			 vde->bsev, 0x54);
>  
>  	value = ctx->pic_width_in_mbs << 11 | ctx->pic_height_in_mbs << 3;
>  
> -	VDE_WR(value, vde->bsev + 0x88);
> +	tegra_vde_writel(vde, value, vde->bsev, 0x88);
>  
>  	err = tegra_vde_wait_bsev(vde, false);
>  	if (err)
> @@ -417,7 +447,7 @@ static int tegra_vde_setup_hw_context(struct tegra_vde *vde,
>  	value |= ctx->pic_width_in_mbs << 11;
>  	value |= ctx->pic_height_in_mbs << 3;
>  
> -	VDE_WR(value, vde->sxe + 0x10);
> +	tegra_vde_writel(vde, value, vde->sxe, 0x10);
>  
>  	value = !ctx->baseline_profile << 17;
>  	value |= ctx->level_idc << 13;
> @@ -425,54 +455,54 @@ static int tegra_vde_setup_hw_context(struct tegra_vde *vde,
>  	value |= ctx->pic_order_cnt_type << 5;
>  	value |= ctx->log2_max_frame_num;
>  
> -	VDE_WR(value, vde->sxe + 0x40);
> +	tegra_vde_writel(vde, value, vde->sxe, 0x40);
>  
>  	value = ctx->pic_init_qp << 25;
>  	value |= !!(ctx->deblocking_filter_control_present_flag) << 2;
>  	value |= !!ctx->pic_order_present_flag;
>  
> -	VDE_WR(value, vde->sxe + 0x44);
> +	tegra_vde_writel(vde, value, vde->sxe, 0x44);
>  
>  	value = ctx->chroma_qp_index_offset;
>  	value |= ctx->num_ref_idx_l0_active_minus1 << 5;
>  	value |= ctx->num_ref_idx_l1_active_minus1 << 10;
>  	value |= !!ctx->constrained_intra_pred_flag << 15;
>  
> -	VDE_WR(value, vde->sxe + 0x48);
> +	tegra_vde_writel(vde, value, vde->sxe, 0x48);
>  
>  	value = 0x0C000000;
>  	value |= !!(dpb_frames[0].flags & FLAG_B_FRAME) << 24;
>  
> -	VDE_WR(value, vde->sxe + 0x4C);
> +	tegra_vde_writel(vde, value, vde->sxe, 0x4C);
>  
>  	value = 0x03800000;
>  	value |= bitstream_data_size & GENMASK(19, 15);
>  
> -	VDE_WR(value, vde->sxe + 0x68);
> +	tegra_vde_writel(vde, value, vde->sxe, 0x68);
>  
> -	VDE_WR(bitstream_data_addr, vde->sxe + 0x6C);
> +	tegra_vde_writel(vde, bitstream_data_addr, vde->sxe, 0x6C);
>  
>  	value = 0x10000005;
>  	value |= ctx->pic_width_in_mbs << 11;
>  	value |= ctx->pic_height_in_mbs << 3;
>  
> -	VDE_WR(value, vde->mbe + 0x80);
> +	tegra_vde_writel(vde, value, vde->mbe, 0x80);
>  
>  	value = 0x26800000;
>  	value |= ctx->level_idc << 4;
>  	value |= !ctx->baseline_profile << 1;
>  	value |= !!ctx->direct_8x8_inference_flag;
>  
> -	VDE_WR(value, vde->mbe + 0x80);
> +	tegra_vde_writel(vde, value, vde->mbe, 0x80);
>  
> -	VDE_WR(0xF4000001, vde->mbe + 0x80);
> -	VDE_WR(0x20000000, vde->mbe + 0x80);
> -	VDE_WR(0xF4000101, vde->mbe + 0x80);
> +	tegra_vde_writel(vde, 0xF4000001, vde->mbe, 0x80);
> +	tegra_vde_writel(vde, 0x20000000, vde->mbe, 0x80);
> +	tegra_vde_writel(vde, 0xF4000101, vde->mbe, 0x80);
>  
>  	value = 0x20000000;
>  	value |= ctx->chroma_qp_index_offset << 8;
>  
> -	VDE_WR(value, vde->mbe + 0x80);
> +	tegra_vde_writel(vde, value, vde->mbe, 0x80);
>  
>  	err = tegra_vde_setup_mbe_frame_idx(vde,
>  					    ctx->dpb_frames_nb - 1,
> @@ -494,7 +524,7 @@ static int tegra_vde_setup_hw_context(struct tegra_vde *vde,
>  	if (!ctx->baseline_profile)
>  		value |= !!(dpb_frames[0].flags & FLAG_REFERENCE) << 1;
>  
> -	VDE_WR(value, vde->mbe + 0x80);
> +	tegra_vde_writel(vde, value, vde->mbe, 0x80);
>  
>  	err = tegra_vde_wait_mbe(vde);
>  	if (err) {
> @@ -510,8 +540,9 @@ static void tegra_vde_decode_frame(struct tegra_vde *vde,
>  {
>  	reinit_completion(&vde->decode_completion);
>  
> -	VDE_WR(0x00000001, vde->bsev + 0x8C);
> -	VDE_WR(0x20000000 | (macroblocks_nb - 1), vde->sxe + 0x00);
> +	tegra_vde_writel(vde, 0x00000001, vde->bsev, 0x8C);
> +	tegra_vde_writel(vde, 0x20000000 | (macroblocks_nb - 1),
> +			 vde->sxe, 0x00);
>  }
>  
>  static void tegra_vde_detach_and_put_dmabuf(struct dma_buf_attachment *a,
> @@ -883,8 +914,8 @@ static int tegra_vde_ioctl_decode_h264(struct tegra_vde *vde,
>  	timeout = wait_for_completion_interruptible_timeout(
>  			&vde->decode_completion, msecs_to_jiffies(1000));
>  	if (timeout == 0) {
> -		bsev_ptr = readl_relaxed(vde->bsev + 0x10);
> -		macroblocks_nb = readl_relaxed(vde->sxe + 0xC8) & 0x1FFF;
> +		bsev_ptr = tegra_vde_readl(vde, vde->bsev, 0x10);
> +		macroblocks_nb = tegra_vde_readl(vde, vde->sxe, 0xC8) & 0x1FFF;
>  		read_bytes = bsev_ptr ? bsev_ptr - bitstream_data_addr : 0;
>  
>  		dev_err(dev, "Decoding failed: read 0x%X bytes, %u macroblocks parsed\n",
> @@ -962,7 +993,7 @@ static irqreturn_t tegra_vde_isr(int irq, void *data)
>  	if (completion_done(&vde->decode_completion))
>  		return IRQ_NONE;
>  
> -	tegra_vde_set_bits(vde, 0, vde->frameid + 0x208);
> +	tegra_vde_set_bits(vde, 0, vde->frameid, 0x208);
>  	complete(&vde->decode_completion);
>  
>  	return IRQ_HANDLED;
> diff --git a/drivers/staging/media/tegra-vde/trace.h b/drivers/staging/media/tegra-vde/trace.h
> new file mode 100644
> index 000000000000..9fef8c0f6a9b
> --- /dev/null
> +++ b/drivers/staging/media/tegra-vde/trace.h
> @@ -0,0 +1,101 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +
> +#undef TRACE_SYSTEM
> +#define TRACE_SYSTEM tegra_vde
> +
> +#if !defined(TEGRA_VDE_TRACE_H) || defined(TRACE_HEADER_MULTI_READ)
> +#define TEGRA_VDE_TRACE_H
> +
> +#include <linux/tracepoint.h>
> +
> +struct tegra_vde;
> +
> +static char const *tegra_vde_reg_base_name(struct tegra_vde *vde,
> +					   void __iomem *base);
> +
> +DECLARE_EVENT_CLASS(register_access,
> +	TP_PROTO(struct tegra_vde *vde, void __iomem *base,
> +		 u32 offset, u32 value),
> +	TP_ARGS(vde, base, offset, value),
> +	TP_STRUCT__entry(
> +		__field(struct tegra_vde *, vde)
> +		__field(void __iomem *, base)
> +		__field(u32, offset)
> +		__field(u32, value)
> +	),
> +	TP_fast_assign(
> +		__entry->vde = vde;
> +		__entry->base = base;
> +		__entry->offset = offset;
> +		__entry->value = value;
> +	),
> +	TP_printk("%s:0x%03x 0x%08x",
> +		  tegra_vde_reg_base_name(__entry->vde, __entry->base),
> +		  __entry->offset, __entry->value)
> +);
> +
> +DEFINE_EVENT(register_access, vde_writel,
> +	TP_PROTO(struct tegra_vde *vde, void __iomem *base,
> +		 u32 offset, u32 value),
> +	TP_ARGS(vde, base, offset, value));
> +DEFINE_EVENT(register_access, vde_readl,
> +	TP_PROTO(struct tegra_vde *vde, void __iomem *base,
> +		 u32 offset, u32 value),
> +	TP_ARGS(vde, base, offset, value));
> +
> +TRACE_EVENT(vde_setup_iram_entry,
> +	TP_PROTO(unsigned int table, unsigned int row, u32 value, u32 aux_addr),
> +	TP_ARGS(table, row, value, aux_addr),
> +	TP_STRUCT__entry(
> +		__field(unsigned int, table)
> +		__field(unsigned int, row)
> +		__field(u32, value)
> +		__field(u32, aux_addr)
> +	),
> +	TP_fast_assign(
> +		__entry->table = table;
> +		__entry->row = row;
> +		__entry->value = value;
> +		__entry->aux_addr = aux_addr;
> +	),
> +	TP_printk("[%u][%u] = { 0x%08x (flags = \"%s\", frame_num = %u); 0x%08x }",
> +		  __entry->table, __entry->row, __entry->value,
> +		  __print_flags(__entry->value, " ", { (1 << 25), "B" }),
> +		  __entry->value & 0x7FFFFF, __entry->aux_addr)
> +);
> +
> +TRACE_EVENT(vde_ref_l0,
> +	TP_PROTO(unsigned int frame_num),
> +	TP_ARGS(frame_num),
> +	TP_STRUCT__entry(
> +		__field(unsigned int, frame_num)
> +	),
> +	TP_fast_assign(
> +		__entry->frame_num = frame_num;
> +	),
> +	TP_printk("REF L0: DPB: Frame 0: frame_num = %u", __entry->frame_num)
> +);
> +
> +TRACE_EVENT(vde_ref_l1,
> +	TP_PROTO(unsigned int with_later_poc_nb,
> +		 unsigned int with_earlier_poc_nb),
> +	TP_ARGS(with_later_poc_nb, with_earlier_poc_nb),
> +	TP_STRUCT__entry(
> +		__field(unsigned int, with_later_poc_nb)
> +		__field(unsigned int, with_earlier_poc_nb)
> +	),
> +	TP_fast_assign(
> +		__entry->with_later_poc_nb = with_later_poc_nb;
> +		__entry->with_earlier_poc_nb = with_earlier_poc_nb;
> +	),
> +	TP_printk("REF L1: with_later_poc_nb %u, with_earlier_poc_nb %u",
> +		  __entry->with_later_poc_nb, __entry->with_earlier_poc_nb)
> +);
> +
> +#endif /* TEGRA_VDE_TRACE_H */
> +
> +/* This part must be outside protection */
> +#undef TRACE_INCLUDE_PATH
> +#define TRACE_INCLUDE_PATH ../../drivers/staging/media/tegra-vde
> +#define TRACE_INCLUDE_FILE trace
> +#include <trace/define_trace.h>



Thanks,
Mauro

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