diff options
| author | Lyude Paul <lyude@redhat.com> | 2026-03-16 17:16:10 -0400 |
|---|---|---|
| committer | Danilo Krummrich <dakr@kernel.org> | 2026-03-27 21:37:45 +0100 |
| commit | 89b4964c0456d9939a9f5187891a36bb87111e58 (patch) | |
| tree | 46e2d5beb02b5b93b50b3077591a55c82799a8a3 /rust | |
| parent | 9b836641d3bfa1ab096ec6263f0fa6880cb9c5ef (diff) | |
rust: drm: gem: Add raw_dma_resv() function
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>
Diffstat (limited to 'rust')
| -rw-r--r-- | rust/kernel/drm/gem/mod.rs | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/rust/kernel/drm/gem/mod.rs b/rust/kernel/drm/gem/mod.rs index 6cc441ee5b63..a78b98c40d56 100644 --- a/rust/kernel/drm/gem/mod.rs +++ b/rust/kernel/drm/gem/mod.rs @@ -215,6 +215,18 @@ pub trait BaseObject: IntoGEMObject { 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 |