Re: [PATCH 02/11] drm/msm/dpu: Use DEFINE_SHOW_ATTRIBUTE

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On Thu, Oct 18, 2018 at 3:58 PM Jordan Crouse <jcrouse@xxxxxxxxxxxxxx> wrote:
>
> Use the standard DEFINE_SHOW_ATTRIBUTE macro for seq_file based
> debugfs files instead of custom macros and hand-coded functions.
>
> Signed-off-by: Jordan Crouse <jcrouse@xxxxxxxxxxxxxx>

Sorry! Suppressed CCs by accident

Reviewed-by: Bruce Wang <bzwang@xxxxxxxxxxxx>

> ---
>  drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.c | 14 +-------
>  drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c     | 31 +++---------------
>  drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c      | 34 +++-----------------
>  3 files changed, 10 insertions(+), 69 deletions(-)
>
> 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 ae63590ad2d3..fb923c0c4171 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
> @@ -1232,7 +1232,7 @@ 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 dpu_crtc_debugfs_status_show(struct seq_file *s, void *data)
>  {
>         struct dpu_crtc *dpu_crtc;
>         struct dpu_plane_state *pstate = NULL;
> @@ -1351,23 +1351,7 @@ 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,                                            \
> -}
> +DEFINE_SHOW_ATTRIBUTE(dpu_crtc_debugfs_status);
>
>  static int dpu_crtc_debugfs_state_show(struct seq_file *s, void *v)
>  {
> @@ -1391,20 +1375,13 @@ 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);
>
>  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);
> @@ -1419,7 +1396,7 @@ 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, &dpu_crtc_debugfs_status_fops);
>         debugfs_create_file("state", 0600,
>                         dpu_crtc->debugfs_root,
>                         &dpu_crtc->base,
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
> index fd5bad16338d..7e3ba128cbaf 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
> @@ -113,30 +113,17 @@ 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 +149,7 @@ 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_debugfs_regset32_show(struct seq_file *s, void *data)
>  {
>         struct dpu_debugfs_regset32 *regset;
>         struct dpu_kms *dpu_kms;
> @@ -212,18 +199,7 @@ 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_debugfs_regset32);
>
>  void dpu_debugfs_setup_regset32(struct dpu_debugfs_regset32 *regset,
>                 uint32_t offset, uint32_t length, struct dpu_kms *dpu_kms)
> @@ -245,7 +221,7 @@ 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_debugfs_regset32_fops);
>  }
>
>  static int _dpu_debugfs_init(struct dpu_kms *dpu_kms)
> --
> 2.18.0
>



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