[PATCH] drm: Push dirtyfb ioctl kms locking down to drivers
Jakob Bornecrantz
wallbraker at gmail.com
Wed Dec 4 04:30:47 PST 2013
Looks good to me
Reviewed-by: Jakob Bornecrant <jakob at vmware.com>
On Wed, Dec 4, 2013 at 1:13 PM, <ville.syrjala at linux.intel.com> wrote:
> From: Ville Syrjälä <ville.syrjala at linux.intel.com>
>
> Not all drivers will need take all the modeset locks for dirtyfb, so
> push the locking down to the drivers.
>
> Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
> Reviewed-by: Daniel Vetter <daniel.vetter at ffwll.ch>
> ---
> drivers/gpu/drm/drm_crtc.c | 2 --
> drivers/gpu/drm/omapdrm/omap_fb.c | 4 ++++
> drivers/gpu/drm/qxl/qxl_display.c | 9 ++++++++-
> drivers/gpu/drm/udl/udl_fb.c | 12 +++++++++---
> drivers/gpu/drm/vmwgfx/vmwgfx_kms.c | 18 ++++++++++++++++--
> 5 files changed, 37 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
> index d6cf77c..266a01d 100644
> --- a/drivers/gpu/drm/drm_crtc.c
> +++ b/drivers/gpu/drm/drm_crtc.c
> @@ -2767,10 +2767,8 @@ int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
> }
>
> if (fb->funcs->dirty) {
> - drm_modeset_lock_all(dev);
> ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
> clips, num_clips);
> - drm_modeset_unlock_all(dev);
> } else {
> ret = -ENOSYS;
> }
> diff --git a/drivers/gpu/drm/omapdrm/omap_fb.c b/drivers/gpu/drm/omapdrm/omap_fb.c
> index f2b8f06..f466c4a 100644
> --- a/drivers/gpu/drm/omapdrm/omap_fb.c
> +++ b/drivers/gpu/drm/omapdrm/omap_fb.c
> @@ -123,12 +123,16 @@ static int omap_framebuffer_dirty(struct drm_framebuffer *fb,
> {
> int i;
>
> + drm_modeset_lock_all(fb->dev);
> +
> for (i = 0; i < num_clips; i++) {
> omap_framebuffer_flush(fb, clips[i].x1, clips[i].y1,
> clips[i].x2 - clips[i].x1,
> clips[i].y2 - clips[i].y1);
> }
>
> + drm_modeset_unlock_all(fb->dev);
> +
> return 0;
> }
>
> diff --git a/drivers/gpu/drm/qxl/qxl_display.c b/drivers/gpu/drm/qxl/qxl_display.c
> index 5e827c2..b8f3bc7 100644
> --- a/drivers/gpu/drm/qxl/qxl_display.c
> +++ b/drivers/gpu/drm/qxl/qxl_display.c
> @@ -399,10 +399,14 @@ static int qxl_framebuffer_surface_dirty(struct drm_framebuffer *fb,
> struct qxl_bo *qobj;
> int inc = 1;
>
> + drm_modeset_lock_all(fb->dev);
> +
> qobj = gem_to_qxl_bo(qxl_fb->obj);
> /* if we aren't primary surface ignore this */
> - if (!qobj->is_primary)
> + if (!qobj->is_primary) {
> + drm_modeset_unlock_all(fb->dev);
> return 0;
> + }
>
> if (!num_clips) {
> num_clips = 1;
> @@ -417,6 +421,9 @@ static int qxl_framebuffer_surface_dirty(struct drm_framebuffer *fb,
>
> qxl_draw_dirty_fb(qdev, qxl_fb, qobj, flags, color,
> clips, num_clips, inc);
> +
> + drm_modeset_unlock_all(fb->dev);
> +
> return 0;
> }
>
> diff --git a/drivers/gpu/drm/udl/udl_fb.c b/drivers/gpu/drm/udl/udl_fb.c
> index 97e9d61..dbadd49 100644
> --- a/drivers/gpu/drm/udl/udl_fb.c
> +++ b/drivers/gpu/drm/udl/udl_fb.c
> @@ -403,15 +403,17 @@ static int udl_user_framebuffer_dirty(struct drm_framebuffer *fb,
> int i;
> int ret = 0;
>
> + drm_modeset_lock_all(fb->dev);
> +
> if (!ufb->active_16)
> - return 0;
> + goto unlock;
>
> if (ufb->obj->base.import_attach) {
> ret = dma_buf_begin_cpu_access(ufb->obj->base.import_attach->dmabuf,
> 0, ufb->obj->base.size,
> DMA_FROM_DEVICE);
> if (ret)
> - return ret;
> + goto unlock;
> }
>
> for (i = 0; i < num_clips; i++) {
> @@ -419,7 +421,7 @@ static int udl_user_framebuffer_dirty(struct drm_framebuffer *fb,
> clips[i].x2 - clips[i].x1,
> clips[i].y2 - clips[i].y1);
> if (ret)
> - break;
> + goto unlock;
> }
>
> if (ufb->obj->base.import_attach) {
> @@ -427,6 +429,10 @@ static int udl_user_framebuffer_dirty(struct drm_framebuffer *fb,
> 0, ufb->obj->base.size,
> DMA_FROM_DEVICE);
> }
> +
> + unlock:
> + drm_modeset_unlock_all(fb->dev);
> +
> return ret;
> }
>
> diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
> index ecb3d86..ab0b88f 100644
> --- a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
> +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
> @@ -608,9 +608,13 @@ int vmw_framebuffer_surface_dirty(struct drm_framebuffer *framebuffer,
> if (!dev_priv->sou_priv)
> return -EINVAL;
>
> + drm_modeset_lock_all(dev_priv->dev);
> +
> ret = ttm_read_lock(&vmaster->lock, true);
> - if (unlikely(ret != 0))
> + if (unlikely(ret != 0)) {
> + drm_modeset_unlock_all(dev_priv->dev);
> return ret;
> + }
>
> if (!num_clips) {
> num_clips = 1;
> @@ -628,6 +632,9 @@ int vmw_framebuffer_surface_dirty(struct drm_framebuffer *framebuffer,
> clips, num_clips, inc, NULL);
>
> ttm_read_unlock(&vmaster->lock);
> +
> + drm_modeset_unlock_all(dev_priv->dev);
> +
> return 0;
> }
>
> @@ -952,9 +959,13 @@ int vmw_framebuffer_dmabuf_dirty(struct drm_framebuffer *framebuffer,
> struct drm_clip_rect norect;
> int ret, increment = 1;
>
> + drm_modeset_lock_all(dev_priv->dev);
> +
> ret = ttm_read_lock(&vmaster->lock, true);
> - if (unlikely(ret != 0))
> + if (unlikely(ret != 0)) {
> + drm_modeset_unlock_all(dev_priv->dev);
> return ret;
> + }
>
> if (!num_clips) {
> num_clips = 1;
> @@ -978,6 +989,9 @@ int vmw_framebuffer_dmabuf_dirty(struct drm_framebuffer *framebuffer,
> }
>
> ttm_read_unlock(&vmaster->lock);
> +
> + drm_modeset_unlock_all(dev_priv->dev);
> +
> return ret;
> }
>
> --
> 1.8.3.2
>
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