[PATCH] drm: drm init call takes large time

[Ville Syrjälä]

On Sun, Jun 30, 2013 at 05:41:59AM +0500, Abbas Raza wrote:
> From: Abbas Raza <Abbas_Raza at mentor.com>
> 
> DRM_INFO calls in the drm init routines are causing a large delay at boot time
> due to which imx_drm_init call average takes around 26 ms. Changing DRM_INFO to
> DRM_DEBUG reduces startup time to < 3ms.

Serial console enabled?

Not that I think these printks are particularly useful...

> Signed-off-by: Abbas Raza <Abbas_Raza at mentor.com>
> CC: David Airlie <airlied at linux.ie>
> Acked-by: Dmitry Eremin-Solenikov <dmitry_eremin at mentor.com>
> ---
>  drivers/gpu/drm/drm_irq.c      | 6 +++---
>  drivers/gpu/drm/drm_platform.c | 2 +-
>  2 files changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c
> index c798eea..782f5ff 100644
> --- a/drivers/gpu/drm/drm_irq.c
> +++ b/drivers/gpu/drm/drm_irq.c
> @@ -252,13 +252,13 @@ int drm_vblank_init(struct drm_device *dev, int num_crtcs)
>  	if (!dev->_vblank_time)
>  		goto err;
>  
> -	DRM_INFO("Supports vblank timestamp caching Rev 1 (10.10.2010).\n");
> +	DRM_DEBUG("Supports vblank timestamp caching Rev 1 (10.10.2010).\n");
>  
>  	/* Driver specific high-precision vblank timestamping supported? */
>  	if (dev->driver->get_vblank_timestamp)
> -		DRM_INFO("Driver supports precise vblank timestamp query.\n");
> +		DRM_DEBUG("Driver supports precise vblank timestamp query.\n");
>  	else
> -		DRM_INFO("No driver support for vblank timestamp query.\n");
> +		DRM_DEBUG("No driver support for vblank timestamp query.\n");
>  
>  	/* Zero per-crtc vblank stuff */
>  	for (i = 0; i < num_crtcs; i++) {
> diff --git a/drivers/gpu/drm/drm_platform.c b/drivers/gpu/drm/drm_platform.c
> index 82431dc..7649963 100644
> --- a/drivers/gpu/drm/drm_platform.c
> +++ b/drivers/gpu/drm/drm_platform.c
> @@ -92,7 +92,7 @@ int drm_get_platform_dev(struct platform_device *platdev,
>  
>  	mutex_unlock(&drm_global_mutex);
>  
> -	DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n",
> +	DRM_DEBUG("Initialized %s %d.%d.%d %s on minor %d\n",
>  		 driver->name, driver->major, driver->minor, driver->patchlevel,
>  		 driver->date, dev->primary->index);
>  
> -- 
> 1.8.2
> 
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-- 
Ville Syrjälä
Intel OTC