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From: Daniel Almeida <daniel.almeida@collabora.com>
To: "Maarten Lankhorst" <maarten.lankhorst@linux.intel.com>,
	"Maxime Ripard" <mripard@kernel.org>,
	"Thomas Zimmermann" <tzimmermann@suse.de>,
	"David Airlie" <airlied@gmail.com>,
	"Simona Vetter" <simona@ffwll.ch>,
	"Miguel Ojeda" <ojeda@kernel.org>,
	"Alex Gaynor" <alex.gaynor@gmail.com>,
	"Boqun Feng" <boqun.feng@gmail.com>,
	"Gary Guo" <gary@garyguo.net>,
	"Björn Roy Baron" <bjorn3_gh@protonmail.com>,
	"Benno Lossin" <benno.lossin@proton.me>,
	"Andreas Hindborg" <a.hindborg@kernel.org>,
	"Alice Ryhl" <aliceryhl@google.com>,
	"Trevor Gross" <tmgross@umich.edu>,
	"Sumit Semwal" <sumit.semwal@linaro.org>,
	"Christian König" <christian.koenig@amd.com>
Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org,
	 rust-for-linux@vger.kernel.org, linux-media@vger.kernel.org,
	 linaro-mm-sig@lists.linaro.org,
	Danilo Krummrich <dakr@kernel.org>,
	 Asahi Lina <lina@asahilina.net>,
	 Daniel Almeida <daniel.almeida@collabora.com>
Subject: [PATCH 2/7] drm/gem-shmem: Export VM ops functions
Date: Tue, 18 Mar 2025 16:22:36 -0300	[thread overview]
Message-ID: <20250318-drm-gem-shmem-v1-2-64b96511a84f@collabora.com> (raw)
In-Reply-To: <20250318-drm-gem-shmem-v1-0-64b96511a84f@collabora.com>

From: Asahi Lina <lina@asahilina.net>

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>
Signed-off-by: Daniel Almeida <daniel.almeida@collabora.com>
---
 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 ec89e9499f5f02a2a35713669bf649dd2abb9938..be310db5863871604f3502ad1f419937d4c20a84 100644
--- a/drivers/gpu/drm/drm_gem_shmem_helper.c
+++ b/drivers/gpu/drm/drm_gem_shmem_helper.c
@@ -535,7 +535,7 @@ 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;
@@ -564,8 +564,9 @@ 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);
@@ -586,8 +587,9 @@ 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);
@@ -598,6 +600,7 @@ static void drm_gem_shmem_vm_close(struct vm_area_struct *vma)
 
 	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 d22e3fb53631ab655748d7f6c628ffdb402f6324..b70d3cc35bd194e7cd718bee220408b5dda568bf 100644
--- a/include/drm/drm_gem_shmem_helper.h
+++ b/include/drm/drm_gem_shmem_helper.h
@@ -132,6 +132,9 @@ 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

-- 
2.48.1


  parent reply	other threads:[~2025-03-18 19:23 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-03-18 19:22 [PATCH 0/7] Rust abstractions for shmem-backed GEM objects Daniel Almeida
2025-03-18 19:22 ` [PATCH 1/7] drm/shmem-helper: Add lockdep asserts to vmap/vunmap Daniel Almeida
2025-03-19  7:49   ` Christian König
2025-05-13 19:26     ` Lyude Paul
2025-03-18 19:22 ` Daniel Almeida [this message]
2025-03-19  7:55   ` [PATCH 2/7] drm/gem-shmem: Export VM ops functions Christian König
2025-03-19  7:55   ` Christian König
2025-03-18 19:22 ` [PATCH 3/7] rust: helpers: Add bindings/wrappers for dma_resv_lock Daniel Almeida
2025-03-18 19:22 ` [PATCH 4/7] rust: drm: gem: shmem: Add DRM shmem helper abstraction Daniel Almeida
2025-03-18 19:22 ` [PATCH 5/7] drm/gem: Add a flag to control whether objects can be exported Daniel Almeida
2025-03-19  8:04   ` Christian König
2025-03-18 19:22 ` [PATCH 6/7] rust: drm: gem: Add set_exportable() method Daniel Almeida
2025-03-18 19:22 ` [PATCH 7/7] rust: drm: gem: shmem: Add share_dma_resv() function Daniel Almeida

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