linux-kernel - Re: [PATCH 05/15] drm/vmwgfx: cleanup: drm_modeset_lock_all() --> DRM_MODESET_LOCK_ALL

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Message-ID: <20210917153707.GE2515@art_vandelay>
Date:   Fri, 17 Sep 2021 11:37:07 -0400
From:   Sean Paul <sean@...rly.run>
To:     Fernando Ramos <greenfoo@....eu>
Cc:     dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        sean@...rly.run, linux-doc@...r.kernel.org,
        amd-gfx@...ts.freedesktop.org, intel-gfx@...ts.freedesktop.org,
        linux-arm-msm@...r.kernel.org, freedreno@...ts.freedesktop.org,
        nouveau@...ts.freedesktop.org, linux-renesas-soc@...r.kernel.org,
        linux-tegra@...r.kernel.org
Subject: Re: [PATCH 05/15] drm/vmwgfx: cleanup: drm_modeset_lock_all() -->
 DRM_MODESET_LOCK_ALL_BEGIN()

On Thu, Sep 16, 2021 at 11:15:42PM +0200, Fernando Ramos wrote:
> As requested in Documentation/gpu/todo.rst, replace driver calls to
> drm_modeset_lock_all() with DRM_MODESET_LOCK_ALL_BEGIN() and
> DRM_MODESET_LOCK_ALL_END()
> 

Reviewed-by: Sean Paul <sean@...rly.run>

> Signed-off-by: Fernando Ramos <greenfoo@....eu>
> ---
>  drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c | 11 +++++++----
>  drivers/gpu/drm/vmwgfx/vmwgfx_kms.c   | 12 ++++++++----
>  2 files changed, 15 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c b/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c
> index 28af34ab6ed6..7df35c6f1458 100644
> --- a/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c
> +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c
> @@ -28,6 +28,7 @@
>  #include "vmwgfx_drv.h"
>  #include "vmwgfx_devcaps.h"
>  #include <drm/vmwgfx_drm.h>
> +#include <drm/drm_drv.h>
>  #include "vmwgfx_kms.h"
>  
>  int vmw_getparam_ioctl(struct drm_device *dev, void *data,
> @@ -172,6 +173,7 @@ int vmw_present_ioctl(struct drm_device *dev, void *data,
>  	struct drm_vmw_rect __user *clips_ptr;
>  	struct drm_vmw_rect *clips = NULL;
>  	struct drm_framebuffer *fb;
> +	struct drm_modeset_acquire_ctx ctx;
>  	struct vmw_framebuffer *vfb;
>  	struct vmw_resource *res;
>  	uint32_t num_clips;
> @@ -203,7 +205,7 @@ int vmw_present_ioctl(struct drm_device *dev, void *data,
>  		goto out_no_copy;
>  	}
>  
> -	drm_modeset_lock_all(dev);
> +	DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, ret);
>  
>  	fb = drm_framebuffer_lookup(dev, file_priv, arg->fb_id);
>  	if (!fb) {
> @@ -231,7 +233,7 @@ int vmw_present_ioctl(struct drm_device *dev, void *data,
>  out_no_surface:
>  	drm_framebuffer_put(fb);
>  out_no_fb:
> -	drm_modeset_unlock_all(dev);
> +	DRM_MODESET_LOCK_ALL_END(dev, ctx, ret);
>  out_no_copy:
>  	kfree(clips);
>  out_clips:
> @@ -250,6 +252,7 @@ int vmw_present_readback_ioctl(struct drm_device *dev, void *data,
>  	struct drm_vmw_rect __user *clips_ptr;
>  	struct drm_vmw_rect *clips = NULL;
>  	struct drm_framebuffer *fb;
> +	struct drm_modeset_acquire_ctx ctx;
>  	struct vmw_framebuffer *vfb;
>  	uint32_t num_clips;
>  	int ret;
> @@ -280,7 +283,7 @@ int vmw_present_readback_ioctl(struct drm_device *dev, void *data,
>  		goto out_no_copy;
>  	}
>  
> -	drm_modeset_lock_all(dev);
> +	DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, ret);
>  
>  	fb = drm_framebuffer_lookup(dev, file_priv, arg->fb_id);
>  	if (!fb) {
> @@ -303,7 +306,7 @@ int vmw_present_readback_ioctl(struct drm_device *dev, void *data,
>  out_no_ttm_lock:
>  	drm_framebuffer_put(fb);
>  out_no_fb:
> -	drm_modeset_unlock_all(dev);
> +	DRM_MODESET_LOCK_ALL_END(dev, ctx, ret);
>  out_no_copy:
>  	kfree(clips);
>  out_clips:
> diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
> index 74fa41909213..268095cb8c84 100644
> --- a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
> +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
> @@ -33,6 +33,7 @@
>  #include <drm/drm_rect.h>
>  #include <drm/drm_sysfs.h>
>  #include <drm/drm_vblank.h>
> +#include <drm/drm_drv.h>
>  
>  #include "vmwgfx_kms.h"
>  
> @@ -243,15 +244,17 @@ void vmw_kms_legacy_hotspot_clear(struct vmw_private *dev_priv)
>  	struct drm_device *dev = &dev_priv->drm;
>  	struct vmw_display_unit *du;
>  	struct drm_crtc *crtc;
> +	struct drm_modeset_acquire_ctx ctx;
> +	int ret;
>  
> -	drm_modeset_lock_all(dev);
> +	DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, ret);
>  	drm_for_each_crtc(crtc, dev) {
>  		du = vmw_crtc_to_du(crtc);
>  
>  		du->hotspot_x = 0;
>  		du->hotspot_y = 0;
>  	}
> -	drm_modeset_unlock_all(dev);
> +	DRM_MODESET_LOCK_ALL_END(dev, ctx, ret);
>  }
>  
>  void vmw_kms_cursor_post_execbuf(struct vmw_private *dev_priv)
> @@ -1012,9 +1015,10 @@ static int vmw_framebuffer_bo_dirty(struct drm_framebuffer *framebuffer,
>  	struct vmw_framebuffer_bo *vfbd =
>  		vmw_framebuffer_to_vfbd(framebuffer);
>  	struct drm_clip_rect norect;
> +	struct drm_modeset_acquire_ctx ctx;
>  	int ret, increment = 1;
>  
> -	drm_modeset_lock_all(&dev_priv->drm);
> +	DRM_MODESET_LOCK_ALL_BEGIN((&dev_priv->drm), ctx, 0, ret);
>  
>  	if (!num_clips) {
>  		num_clips = 1;
> @@ -1040,7 +1044,7 @@ static int vmw_framebuffer_bo_dirty(struct drm_framebuffer *framebuffer,
>  
>  	vmw_cmd_flush(dev_priv, false);
>  
> -	drm_modeset_unlock_all(&dev_priv->drm);
> +	DRM_MODESET_LOCK_ALL_END((&dev_priv->drm), ctx, ret);
>  
>  	return ret;
>  }
> -- 
> 2.33.0
> 

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