[PATCH RFC 05/18] drm/gem-shmem: Export VM ops functions

Asahi Lina
2023-03-07T14:32:17Z

There doesn't seem to be a way for the Rust bindings to get a
compile-time constant reference to drm_gem_shmem_vm_ops, so we need to
duplicate that structure in Rust... this isn't nice...

Signed-off-by: Asahi Lina <lina@asahilina.net>
---
drivers/gpu/drm/drm_gem_shmem_helper.c | 9 ++++++---
include/drm/drm_gem_shmem_helper.h | 3 +++
2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/drm_gem_shmem_helper.c b/drivers/gpu/drm/drm_gem_shmem_helper.c
index 75185a960fc4..10c09819410e 100644
--- a/drivers/gpu/drm/drm_gem_shmem_helper.c
+++ b/drivers/gpu/drm/drm_gem_shmem_helper.c
@@ -534,7 +534,7 @@ int drm_gem_shmem_dumb_create(struct drm_file *file, struct drm_device *dev,
}
EXPORT_SYMBOL_GPL(drm_gem_shmem_dumb_create);

-static vm_fault_t drm_gem_shmem_fault(struct vm_fault *vmf)
+vm_fault_t drm_gem_shmem_fault(struct vm_fault *vmf)
{
struct vm_area_struct *vma = vmf->vma;
struct drm_gem_object *obj = vma->vm_private_data;
@@ -563,8 +563,9 @@ static vm_fault_t drm_gem_shmem_fault(struct vm_fault *vmf)

return ret;
}
+EXPORT_SYMBOL_GPL(drm_gem_shmem_fault);

-static void drm_gem_shmem_vm_open(struct vm_area_struct *vma)
+void drm_gem_shmem_vm_open(struct vm_area_struct *vma)
{
struct drm_gem_object *obj = vma->vm_private_data;
struct drm_gem_shmem_object *shmem = to_drm_gem_shmem_obj(obj);
@@ -585,8 +586,9 @@ static void drm_gem_shmem_vm_open(struct vm_area_struct *vma)

drm_gem_vm_open(vma);
}
+EXPORT_SYMBOL_GPL(drm_gem_shmem_vm_open);

-static void drm_gem_shmem_vm_close(struct vm_area_struct *vma)
+void drm_gem_shmem_vm_close(struct vm_area_struct *vma)
{
struct drm_gem_object *obj = vma->vm_private_data;
struct drm_gem_shmem_object *shmem = to_drm_gem_shmem_obj(obj);
@@ -594,6 +596,7 @@ static void drm_gem_shmem_vm_close(struct vm_area_struct *vma)
drm_gem_shmem_put_pages(shmem);
drm_gem_vm_close(vma);
}
+EXPORT_SYMBOL_GPL(drm_gem_shmem_vm_close);

const struct vm_operations_struct drm_gem_shmem_vm_ops = {
.fault = drm_gem_shmem_fault,
diff --git a/include/drm/drm_gem_shmem_helper.h b/include/drm/drm_gem_shmem_helper.h
index a2201b2488c5..b9f349b3ed76 100644
--- a/include/drm/drm_gem_shmem_helper.h
+++ b/include/drm/drm_gem_shmem_helper.h
@@ -138,6 +138,9 @@ void drm_gem_shmem_print_info(const struct drm_gem_shmem_object *shmem,
struct drm_printer *p, unsigned int indent);

extern const struct vm_operations_struct drm_gem_shmem_vm_ops;
+vm_fault_t drm_gem_shmem_fault(struct vm_fault *vmf);
+void drm_gem_shmem_vm_open(struct vm_area_struct *vma);
+void drm_gem_shmem_vm_close(struct vm_area_struct *vma);

/*
* GEM object functions

--
2.35.1