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80df573af9
The DRM shmem helper includes common code useful for drivers which allocate GEM objects as anonymous shmem. Add a Rust abstraction for this. Drivers can choose the raw GEM implementation or the shmem layer, depending on their needs. Signed-off-by: Asahi Lina <lina@asahilina.net> Signed-off-by: Daniel Almeida <daniel.almeida@collabora.com> Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com> Signed-off-by: Lyude Paul <lyude@redhat.com> Reviewed-by: Janne Grunau <j@jananu.net> Tested-by: Deborah Brouwer <deborah.brouwer@collabora.com> Link: https://patch.msgid.link/20260316211646.650074-6-lyude@redhat.com [ * DRM_GEM_SHMEM_HELPER is a tristate; when a module driver selects it, it becomes =m. The Rust kernel crate and its C helpers are always built into vmlinux and can't reference symbols from a module, causing link errors. Thus, add RUST_DRM_GEM_SHMEM_HELPER bool Kconfig that selects DRM_GEM_SHMEM_HELPER, forcing it built-in when Rust drivers need it; use cfg(CONFIG_RUST_DRM_GEM_SHMEM_HELPER) for the shmem module. * Add cfg_attr(not(CONFIG_RUST_DRM_GEM_SHMEM_HELPER), expect(unused)) on pub(crate) use impl_aref_for_gem_obj and BaseObjectPrivate, so that unused warnings are suppressed when shmem is not enabled. * Enable const_refs_to_static (stabilized in 1.83) to prevent build errors with older compilers. * Use &raw const for bindings::drm_gem_shmem_vm_ops and add #[allow(unused_unsafe, reason = "Safe since Rust 1.82.0")]. * Fix incorrect C Header path and minor spelling and formatting issues. * Drop shmem::Object::sg_table() as the current implementation is unsound. - Danilo ] Signed-off-by: Danilo Krummrich <dakr@kernel.org> |
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| .. | ||
| atomic_ext.c | ||
| atomic.c | ||
| auxiliary.c | ||
| barrier.c | ||
| binder.c | ||
| bitmap.c | ||
| bitops.c | ||
| blk.c | ||
| bug.c | ||
| build_assert.c | ||
| build_bug.c | ||
| clk.c | ||
| completion.c | ||
| cpu.c | ||
| cpufreq.c | ||
| cpumask.c | ||
| cred.c | ||
| device.c | ||
| dma-resv.c | ||
| dma.c | ||
| drm.c | ||
| err.c | ||
| fs.c | ||
| gpu.c | ||
| helpers.c | ||
| io.c | ||
| irq.c | ||
| jump_label.c | ||
| kunit.c | ||
| list.c | ||
| maple_tree.c | ||
| mm.c | ||
| mutex.c | ||
| of.c | ||
| page.c | ||
| pci.c | ||
| pid_namespace.c | ||
| platform.c | ||
| poll.c | ||
| processor.c | ||
| property.c | ||
| pwm.c | ||
| rbtree.c | ||
| rcu.c | ||
| refcount.c | ||
| regulator.c | ||
| scatterlist.c | ||
| security.c | ||
| signal.c | ||
| slab.c | ||
| spinlock.c | ||
| sync.c | ||
| task.c | ||
| time.c | ||
| uaccess.c | ||
| usb.c | ||
| vmalloc.c | ||
| wait.c | ||
| workqueue.c | ||
| xarray.c | ||