github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-12 16:18:45 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity

rust: drm: gem: Add raw_dma_resv() function

Browse Source 
For retrieving a pointer to the struct dma_resv for a given GEM object. We
also introduce it in a new trait, BaseObjectPrivate, which we automatically
implement for all gem objects and don't expose to users outside of the
crate.

Signed-off-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Janne Grunau <j@jananu.net>
Tested-by: Janne Grunau <j@jannau.net>
Tested-by: Deborah Brouwer <deborah.brouwer@collabora.com>
Link: https://patch.msgid.link/20260316211646.650074-3-lyude@redhat.com
[ Fix incorrect reference in safety comment. - Danilo ]
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
This commit is contained in:
Lyude Paul 2026-03-16 17:16:10 -04:00 committed by Danilo Krummrich
parent 9b836641d3
commit 89b4964c04
1 changed files with 12 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
rust/kernel/drm/gem/mod.rs
View File

@ -215,6 +215,18 @@ fn create_mmap_offset(&self) -> Result<u64> {
impl<T: IntoGEMObject> BaseObject for T {}
/// Crate-private base operations shared by all GEM object classes.
#[expect(unused)]
pub(crate) trait BaseObjectPrivate: IntoGEMObject {
/// Return a pointer to this object's dma_resv.
fn raw_dma_resv(&self) -> *mut bindings::dma_resv {
// SAFETY: `self.as_raw()` always returns a valid pointer to the base DRM GEM object.
unsafe { (*self.as_raw()).resv }
}
}
impl<T: IntoGEMObject> BaseObjectPrivate for T {}
/// A base GEM object.
///
/// # Invariants