Re: [PATCH] gpu/drm: remove DEFINE_DPU_DEBUGFS_SEQ_FOPS()

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On Sat, Dec 01, 2018 at 10:19:11PM -0500, Yangtao Li wrote:
> We already have the DEFINE_SHOW_ATTRIBUTE.There is no need to define
> such a macro separately,so remove DEFINE_DPU_DEBUGFS_SEQ_FOPS.
> Also use DEFINE_SHOW_ATTRIBUTE to simplify some code.
> 
> Signed-off-by: Yangtao Li <tiny.windzz@xxxxxxxxx>
> ---
>  drivers/gpu/drm/armada/armada_debugfs.c      | 21 ++++--------
>  drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.c | 14 +-------
>  drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c     | 33 +++---------------
>  drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c  | 17 ++-------
>  drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c      | 36 ++++----------------

For the dpu portion:
Acked-by: Sean Paul <sean@xxxxxxxxxx>

>  drivers/gpu/host1x/debug.c                   | 34 ++++--------------
>  6 files changed, 29 insertions(+), 126 deletions(-)
> 
> diff --git a/drivers/gpu/drm/armada/armada_debugfs.c b/drivers/gpu/drm/armada/armada_debugfs.c
> index 6758c3a83de2..64dccb7c8be2 100644
> --- a/drivers/gpu/drm/armada/armada_debugfs.c
> +++ b/drivers/gpu/drm/armada/armada_debugfs.c
> @@ -28,7 +28,7 @@ static int armada_debugfs_gem_linear_show(struct seq_file *m, void *data)
>  	return 0;
>  }
>  
> -static int armada_debugfs_reg_show(struct seq_file *m, void *data)
> +static int reg_show(struct seq_file *m, void *data)
>  {
>  	struct drm_device *dev = m->private;
>  	struct armada_private *priv = dev->dev_private;
> @@ -50,18 +50,7 @@ static int armada_debugfs_reg_show(struct seq_file *m, void *data)
>  	return 0;
>  }
>  
> -static int armada_debugfs_reg_r_open(struct inode *inode, struct file *file)
> -{
> -	return single_open(file, armada_debugfs_reg_show, inode->i_private);
> -}
> -
> -static const struct file_operations fops_reg_r = {
> -	.owner = THIS_MODULE,
> -	.open = armada_debugfs_reg_r_open,
> -	.read = seq_read,
> -	.llseek = seq_lseek,
> -	.release = single_release,
> -};
> +DEFINE_SHOW_ATTRIBUTE(reg);
>  
>  static int armada_debugfs_write(struct file *file, const char __user *ptr,
>  	size_t len, loff_t *off)
> @@ -119,12 +108,14 @@ int armada_drm_debugfs_init(struct drm_minor *minor)
>  		return ret;
>  
>  	de = debugfs_create_file("reg", S_IFREG | S_IRUSR,
> -				 minor->debugfs_root, minor->dev, &fops_reg_r);
> +				 minor->debugfs_root, minor->dev,
> +				 &reg_fops);
>  	if (!de)
>  		return -ENOMEM;
>  
>  	de = debugfs_create_file("reg_wr", S_IFREG | S_IWUSR,
> -				 minor->debugfs_root, minor->dev, &fops_reg_w);
> +				 minor->debugfs_root, minor->dev,
> +				 &fops_reg_w);
>  	if (!de)
>  		return -ENOMEM;
>  
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.c
> index 879c13fe74e0..7607aac9449c 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.c
> @@ -299,18 +299,6 @@ static void dpu_disable_all_irqs(struct dpu_kms *dpu_kms)
>  }
>  
>  #ifdef CONFIG_DEBUG_FS
> -#define DEFINE_DPU_DEBUGFS_SEQ_FOPS(__prefix)				\
> -static int __prefix ## _open(struct inode *inode, struct file *file)	\
> -{									\
> -	return single_open(file, __prefix ## _show, inode->i_private);	\
> -}									\
> -static const struct file_operations __prefix ## _fops = {		\
> -	.owner = THIS_MODULE,						\
> -	.open = __prefix ## _open,					\
> -	.release = single_release,					\
> -	.read = seq_read,						\
> -	.llseek = seq_lseek,						\
> -}
>  
>  static int dpu_debugfs_core_irq_show(struct seq_file *s, void *v)
>  {
> @@ -341,7 +329,7 @@ static int dpu_debugfs_core_irq_show(struct seq_file *s, void *v)
>  	return 0;
>  }
>  
> -DEFINE_DPU_DEBUGFS_SEQ_FOPS(dpu_debugfs_core_irq);
> +DEFINE_SHOW_ATTRIBUTE(dpu_debugfs_core_irq);
>  
>  int dpu_debugfs_core_irq_init(struct dpu_kms *dpu_kms,
>  		struct dentry *parent)
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
> index d4530d60767b..e705bad980ee 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
> @@ -1309,7 +1309,7 @@ int dpu_crtc_vblank(struct drm_crtc *crtc, bool en)
>  }
>  
>  #ifdef CONFIG_DEBUG_FS
> -static int _dpu_debugfs_status_show(struct seq_file *s, void *data)
> +static int status_show(struct seq_file *s, void *data)
>  {
>  	struct dpu_crtc *dpu_crtc;
>  	struct dpu_plane_state *pstate = NULL;
> @@ -1428,24 +1428,6 @@ static int _dpu_debugfs_status_show(struct seq_file *s, void *data)
>  	return 0;
>  }
>  
> -static int _dpu_debugfs_status_open(struct inode *inode, struct file *file)
> -{
> -	return single_open(file, _dpu_debugfs_status_show, inode->i_private);
> -}
> -
> -#define DEFINE_DPU_DEBUGFS_SEQ_FOPS(__prefix)                          \
> -static int __prefix ## _open(struct inode *inode, struct file *file)	\
> -{									\
> -	return single_open(file, __prefix ## _show, inode->i_private);	\
> -}									\
> -static const struct file_operations __prefix ## _fops = {		\
> -	.owner = THIS_MODULE,						\
> -	.open = __prefix ## _open,					\
> -	.release = single_release,					\
> -	.read = seq_read,						\
> -	.llseek = seq_lseek,						\
> -}
> -
>  static int dpu_crtc_debugfs_state_show(struct seq_file *s, void *v)
>  {
>  	struct drm_crtc *crtc = (struct drm_crtc *) s->private;
> @@ -1468,20 +1450,15 @@ static int dpu_crtc_debugfs_state_show(struct seq_file *s, void *v)
>  
>  	return 0;
>  }
> -DEFINE_DPU_DEBUGFS_SEQ_FOPS(dpu_crtc_debugfs_state);
> +
> +DEFINE_SHOW_ATTRIBUTE(dpu_crtc_debugfs_state);
> +DEFINE_SHOW_ATTRIBUTE(status);
>  
>  static int _dpu_crtc_init_debugfs(struct drm_crtc *crtc)
>  {
>  	struct dpu_crtc *dpu_crtc;
>  	struct dpu_kms *dpu_kms;
>  
> -	static const struct file_operations debugfs_status_fops = {
> -		.open =		_dpu_debugfs_status_open,
> -		.read =		seq_read,
> -		.llseek =	seq_lseek,
> -		.release =	single_release,
> -	};
> -
>  	if (!crtc)
>  		return -EINVAL;
>  	dpu_crtc = to_dpu_crtc(crtc);
> @@ -1496,7 +1473,7 @@ static int _dpu_crtc_init_debugfs(struct drm_crtc *crtc)
>  	/* don't error check these */
>  	debugfs_create_file("status", 0400,
>  			dpu_crtc->debugfs_root,
> -			dpu_crtc, &debugfs_status_fops);
> +			dpu_crtc, &status_fops);
>  	debugfs_create_file("state", 0600,
>  			dpu_crtc->debugfs_root,
>  			&dpu_crtc->base,
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
> index 96cdf06e7da2..a36f9f72da87 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
> @@ -1873,7 +1873,7 @@ void dpu_encoder_prepare_commit(struct drm_encoder *drm_enc)
>  }
>  
>  #ifdef CONFIG_DEBUG_FS
> -static int _dpu_encoder_status_show(struct seq_file *s, void *data)
> +static int status_show(struct seq_file *s, void *data)
>  {
>  	struct dpu_encoder_virt *dpu_enc;
>  	int i;
> @@ -1912,11 +1912,7 @@ static int _dpu_encoder_status_show(struct seq_file *s, void *data)
>  	return 0;
>  }
>  
> -static int _dpu_encoder_debugfs_status_open(struct inode *inode,
> -		struct file *file)
> -{
> -	return single_open(file, _dpu_encoder_status_show, inode->i_private);
> -}
> +DEFINE_SHOW_ATTRIBUTE(status);
>  
>  static int _dpu_encoder_init_debugfs(struct drm_encoder *drm_enc)
>  {
> @@ -1925,13 +1921,6 @@ static int _dpu_encoder_init_debugfs(struct drm_encoder *drm_enc)
>  	struct dpu_kms *dpu_kms;
>  	int i;
>  
> -	static const struct file_operations debugfs_status_fops = {
> -		.open =		_dpu_encoder_debugfs_status_open,
> -		.read =		seq_read,
> -		.llseek =	seq_lseek,
> -		.release =	single_release,
> -	};
> -
>  	char name[DPU_NAME_SIZE];
>  
>  	if (!drm_enc || !drm_enc->dev || !drm_enc->dev->dev_private) {
> @@ -1953,7 +1942,7 @@ static int _dpu_encoder_init_debugfs(struct drm_encoder *drm_enc)
>  
>  	/* don't error check these */
>  	debugfs_create_file("status", 0600,
> -		dpu_enc->debugfs_root, dpu_enc, &debugfs_status_fops);
> +		dpu_enc->debugfs_root, dpu_enc, &status_fops);
>  
>  	for (i = 0; i < dpu_enc->num_phys_encs; i++)
>  		if (dpu_enc->phys_encs[i] &&
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
> index 0a683e65a9f3..c3f036095c53 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
> @@ -113,30 +113,19 @@ static int _dpu_danger_signal_status(struct seq_file *s,
>  	return 0;
>  }
>  
> -#define DEFINE_DPU_DEBUGFS_SEQ_FOPS(__prefix)				\
> -static int __prefix ## _open(struct inode *inode, struct file *file)	\
> -{									\
> -	return single_open(file, __prefix ## _show, inode->i_private);	\
> -}									\
> -static const struct file_operations __prefix ## _fops = {		\
> -	.owner = THIS_MODULE,						\
> -	.open = __prefix ## _open,					\
> -	.release = single_release,					\
> -	.read = seq_read,						\
> -	.llseek = seq_lseek,						\
> -}
> -
>  static int dpu_debugfs_danger_stats_show(struct seq_file *s, void *v)
>  {
>  	return _dpu_danger_signal_status(s, true);
>  }
> -DEFINE_DPU_DEBUGFS_SEQ_FOPS(dpu_debugfs_danger_stats);
> +
> +DEFINE_SHOW_ATTRIBUTE(dpu_debugfs_danger_stats);
>  
>  static int dpu_debugfs_safe_stats_show(struct seq_file *s, void *v)
>  {
>  	return _dpu_danger_signal_status(s, false);
>  }
> -DEFINE_DPU_DEBUGFS_SEQ_FOPS(dpu_debugfs_safe_stats);
> +
> +DEFINE_SHOW_ATTRIBUTE(dpu_debugfs_safe_stats);
>  
>  static void dpu_debugfs_danger_destroy(struct dpu_kms *dpu_kms)
>  {
> @@ -162,7 +151,7 @@ static int dpu_debugfs_danger_init(struct dpu_kms *dpu_kms,
>  	return 0;
>  }
>  
> -static int _dpu_debugfs_show_regset32(struct seq_file *s, void *data)
> +static int dpu_regset32_show(struct seq_file *s, void *data)
>  {
>  	struct dpu_debugfs_regset32 *regset;
>  	struct dpu_kms *dpu_kms;
> @@ -212,18 +201,7 @@ static int _dpu_debugfs_show_regset32(struct seq_file *s, void *data)
>  	return 0;
>  }
>  
> -static int dpu_debugfs_open_regset32(struct inode *inode,
> -		struct file *file)
> -{
> -	return single_open(file, _dpu_debugfs_show_regset32, inode->i_private);
> -}
> -
> -static const struct file_operations dpu_fops_regset32 = {
> -	.open =		dpu_debugfs_open_regset32,
> -	.read =		seq_read,
> -	.llseek =	seq_lseek,
> -	.release =	single_release,
> -};
> +DEFINE_SHOW_ATTRIBUTE(dpu_regset32);
>  
>  void dpu_debugfs_setup_regset32(struct dpu_debugfs_regset32 *regset,
>  		uint32_t offset, uint32_t length, struct dpu_kms *dpu_kms)
> @@ -245,7 +223,7 @@ void *dpu_debugfs_create_regset32(const char *name, umode_t mode,
>  	regset->offset = round_down(regset->offset, 4);
>  
>  	return debugfs_create_file(name, mode, parent,
> -			regset, &dpu_fops_regset32);
> +			regset, &dpu_regset32_fops);
>  }
>  
>  static int _dpu_debugfs_init(struct dpu_kms *dpu_kms)
> diff --git a/drivers/gpu/host1x/debug.c b/drivers/gpu/host1x/debug.c
> index 329e4a3d8ae7..de7f020e2932 100644
> --- a/drivers/gpu/host1x/debug.c
> +++ b/drivers/gpu/host1x/debug.c
> @@ -119,7 +119,7 @@ static void show_all(struct host1x *m, struct output *o, bool show_fifo)
>  	}
>  }
>  
> -static int host1x_debug_show_all(struct seq_file *s, void *unused)
> +static int host1x_all_show(struct seq_file *s, void *unused)
>  {
>  	struct output o = {
>  		.fn = write_to_seqfile,
> @@ -131,7 +131,7 @@ static int host1x_debug_show_all(struct seq_file *s, void *unused)
>  	return 0;
>  }
>  
> -static int host1x_debug_show(struct seq_file *s, void *unused)
> +static int host1x_show(struct seq_file *s, void *unused)
>  {
>  	struct output o = {
>  		.fn = write_to_seqfile,
> @@ -143,29 +143,8 @@ static int host1x_debug_show(struct seq_file *s, void *unused)
>  	return 0;
>  }
>  
> -static int host1x_debug_open_all(struct inode *inode, struct file *file)
> -{
> -	return single_open(file, host1x_debug_show_all, inode->i_private);
> -}
> -
> -static const struct file_operations host1x_debug_all_fops = {
> -	.open = host1x_debug_open_all,
> -	.read = seq_read,
> -	.llseek = seq_lseek,
> -	.release = single_release,
> -};
> -
> -static int host1x_debug_open(struct inode *inode, struct file *file)
> -{
> -	return single_open(file, host1x_debug_show, inode->i_private);
> -}
> -
> -static const struct file_operations host1x_debug_fops = {
> -	.open = host1x_debug_open,
> -	.read = seq_read,
> -	.llseek = seq_lseek,
> -	.release = single_release,
> -};
> +DEFINE_SHOW_ATTRIBUTE(host1x_all);
> +DEFINE_SHOW_ATTRIBUTE(host1x);
>  
>  static void host1x_debugfs_init(struct host1x *host1x)
>  {
> @@ -177,9 +156,10 @@ static void host1x_debugfs_init(struct host1x *host1x)
>  	/* Store the created entry */
>  	host1x->debugfs = de;
>  
> -	debugfs_create_file("status", S_IRUGO, de, host1x, &host1x_debug_fops);
> +	debugfs_create_file("status", S_IRUGO, de, host1x,
> +			   &host1x_fops);
>  	debugfs_create_file("status_all", S_IRUGO, de, host1x,
> -			    &host1x_debug_all_fops);
> +			    &host1x_all_fops);
>  
>  	debugfs_create_u32("trace_cmdbuf", S_IRUGO|S_IWUSR, de,
>  			   &host1x_debug_trace_cmdbuf);
> -- 
> 2.17.0
> 

-- 
Sean Paul, Software Engineer, Google / Chromium OS
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