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drm: Replace drm_gem_vram_push_to_system() with kunmap + unpin

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The push-to-system function forces a buffer out of video RAM. This decision
should rather be made by the memory manager. By replacing the function with
calls to the kunmap and unpin functions, the buffer's memory becomes available,
but the buffer remains in VRAM until it's evicted by a pin operation.

This patch replaces the remaining instances of drm_gem_vram_push_to_system()
in ast and mgag200, and removes the function from DRM.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20190521110831.20200-2-tzimmermann@suse.de
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Thomas Zimmermann
2019-05-21 13:08:29 +02:00
committed by Gerd Hoffmann
parent 982c0500fd
commit 81da87f63a
5 changed files with 20 additions and 62 deletions
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1
include/drm/drm_gem_vram_helper.h
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@@ -86,7 +86,6 @@ int drm_gem_vram_pin_reserved(struct drm_gem_vram_object *gbo,
unsigned long pl_flag);
int drm_gem_vram_unpin(struct drm_gem_vram_object *gbo);
int drm_gem_vram_unpin_reserved(struct drm_gem_vram_object *gbo);
int drm_gem_vram_push_to_system(struct drm_gem_vram_object *gbo);
void *drm_gem_vram_kmap_at(struct drm_gem_vram_object *gbo, bool map,
bool *is_iomem, struct ttm_bo_kmap_obj *kmap);
void *drm_gem_vram_kmap(struct drm_gem_vram_object *gbo, bool map,