diff options
| author | Simon Ser <contact@emersion.fr> | 2020-11-04 17:01:40 +0000 |
|---|---|---|
| committer | Simon Ser <contact@emersion.fr> | 2020-11-05 11:55:42 +0100 |
| commit | f3f0e410c6a848c8f5b2715167eaa31c407cfb70 (patch) | |
| tree | 284ca1725c7c5e682e011bf9c8aa96af6f1f256b /include/uapi/drm | |
| parent | 24e146cdf9f5a8fb464dd98ba8357d662d37d22f (diff) | |
| download | linux-f3f0e410c6a848c8f5b2715167eaa31c407cfb70.tar.bz2 | |
drm: document that blobs are ref'counted
User-space doesn't need to keep track of blobs that might be in use by
the kernel. User-space can just destroy blobs as soon as they don't need
them anymore.
Signed-off-by: Simon Ser <contact@emersion.fr>
Signed-off-by: Daniel Stone <daniel@fooishbar.org>
Reviewed-by: Jonas Ådahl <jadahl@gmail.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/wgav99DTGfubfVPiurrydQEiyufYpxlJQZ0wJMWYBQ@cp7-web-042.plabs.ch
Diffstat (limited to 'include/uapi/drm')
| -rw-r--r-- | include/uapi/drm/drm_mode.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/uapi/drm/drm_mode.h b/include/uapi/drm/drm_mode.h index 863eda048265..5ad10ab2a577 100644 --- a/include/uapi/drm/drm_mode.h +++ b/include/uapi/drm/drm_mode.h @@ -924,6 +924,12 @@ struct drm_mode_create_blob { * struct drm_mode_destroy_blob - Destroy user blob * @blob_id: blob_id to destroy * Destroy a user-created blob property. + * + * User-space can release blobs as soon as they do not need to refer to them by + * their blob object ID. For instance, if you are using a MODE_ID blob in an + * atomic commit and you will not make another commit re-using the same ID, you + * can destroy the blob as soon as the commit has been issued, without waiting + * for it to complete. */ struct drm_mode_destroy_blob { __u32 blob_id; |