From a4807fcfa85cb0d784ff2f8a8c1af7a2921cb0ee Mon Sep 17 00:00:00 2001
From: Thomas Zimmermann <tzimmermann@suse.de>
Date: Wed, 9 Feb 2022 16:56:33 +0100
Subject: drm/gem-shmem: Set vm_ops in static initializer
Git-commit: d315bdbfebd517cf5efabf666c8099e027ef666f
Patch-mainline: v5.18-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225
Initialize default vm_ops in static initialization of the GEM SHMEM funcs,
instead of the mmap code. It's simply better style. GEM helpers will later
set a VMA's vm_ops from the default automatically.
v2:
* also update the drivers that build upon GEM SHMEM
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Steven Price <steven.price@arm.com>
Reviewed-by: Chia-I Wu <olvaffe@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220209155634.3994-2-tzimmermann@suse.de
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/drm_gem_shmem_helper.c | 5 +++--
drivers/gpu/drm/lima/lima_gem.c | 1 +
drivers/gpu/drm/panfrost/panfrost_gem.c | 1 +
drivers/gpu/drm/v3d/v3d_bo.c | 1 +
drivers/gpu/drm/virtio/virtgpu_object.c | 1 +
include/drm/drm_gem_shmem_helper.h | 2 ++
6 files changed, 9 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/drm_gem_shmem_helper.c b/drivers/gpu/drm/drm_gem_shmem_helper.c
index 3e738aea2664..e18b64369787 100644
--- a/drivers/gpu/drm/drm_gem_shmem_helper.c
+++ b/drivers/gpu/drm/drm_gem_shmem_helper.c
@@ -46,6 +46,7 @@ static const struct drm_gem_object_funcs drm_gem_shmem_funcs = {
.vmap = drm_gem_shmem_object_vmap,
.vunmap = drm_gem_shmem_object_vunmap,
.mmap = drm_gem_shmem_object_mmap,
+ .vm_ops = &drm_gem_shmem_vm_ops,
};
static struct drm_gem_shmem_object *
@@ -588,11 +589,12 @@ static void drm_gem_shmem_vm_close(struct vm_area_struct *vma)
drm_gem_vm_close(vma);
}
-static const struct vm_operations_struct drm_gem_shmem_vm_ops = {
+const struct vm_operations_struct drm_gem_shmem_vm_ops = {
.fault = drm_gem_shmem_fault,
.open = drm_gem_shmem_vm_open,
.close = drm_gem_shmem_vm_close,
};
+EXPORT_SYMBOL_GPL(drm_gem_shmem_vm_ops);
/**
* drm_gem_shmem_mmap - Memory-map a shmem GEM object
@@ -628,7 +630,6 @@ int drm_gem_shmem_mmap(struct drm_gem_shmem_object *shmem, struct vm_area_struct
vma->vm_page_prot = vm_get_page_prot(vma->vm_flags);
if (shmem->map_wc)
vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
- vma->vm_ops = &drm_gem_shmem_vm_ops;
return 0;
}
diff --git a/drivers/gpu/drm/lima/lima_gem.c b/drivers/gpu/drm/lima/lima_gem.c
index d0c2b1422b3b..55bb1ec3c4f7 100644
--- a/drivers/gpu/drm/lima/lima_gem.c
+++ b/drivers/gpu/drm/lima/lima_gem.c
@@ -214,6 +214,7 @@ static const struct drm_gem_object_funcs lima_gem_funcs = {
.vmap = lima_gem_vmap,
.vunmap = drm_gem_shmem_object_vunmap,
.mmap = lima_gem_mmap,
+ .vm_ops = &drm_gem_shmem_vm_ops,
};
struct drm_gem_object *lima_gem_create_object(struct drm_device *dev, size_t size)
diff --git a/drivers/gpu/drm/panfrost/panfrost_gem.c b/drivers/gpu/drm/panfrost/panfrost_gem.c
index ead65f5fa2bc..293e799e2fe8 100644
--- a/drivers/gpu/drm/panfrost/panfrost_gem.c
+++ b/drivers/gpu/drm/panfrost/panfrost_gem.c
@@ -206,6 +206,7 @@ static const struct drm_gem_object_funcs panfrost_gem_funcs = {
.vmap = drm_gem_shmem_object_vmap,
.vunmap = drm_gem_shmem_object_vunmap,
.mmap = drm_gem_shmem_object_mmap,
+ .vm_ops = &drm_gem_shmem_vm_ops,
};
/**
diff --git a/drivers/gpu/drm/v3d/v3d_bo.c b/drivers/gpu/drm/v3d/v3d_bo.c
index 6e3113f419f4..8b3229a37c6d 100644
--- a/drivers/gpu/drm/v3d/v3d_bo.c
+++ b/drivers/gpu/drm/v3d/v3d_bo.c
@@ -59,6 +59,7 @@ static const struct drm_gem_object_funcs v3d_gem_funcs = {
.vmap = drm_gem_shmem_object_vmap,
.vunmap = drm_gem_shmem_object_vunmap,
.mmap = drm_gem_shmem_object_mmap,
+ .vm_ops = &drm_gem_shmem_vm_ops,
};
/* gem_create_object function for allocating a BO struct and doing
diff --git a/drivers/gpu/drm/virtio/virtgpu_object.c b/drivers/gpu/drm/virtio/virtgpu_object.c
index baef2c5f2aaf..f293e6ad52da 100644
--- a/drivers/gpu/drm/virtio/virtgpu_object.c
+++ b/drivers/gpu/drm/virtio/virtgpu_object.c
@@ -124,6 +124,7 @@ static const struct drm_gem_object_funcs virtio_gpu_shmem_funcs = {
.vmap = drm_gem_shmem_object_vmap,
.vunmap = drm_gem_shmem_object_vunmap,
.mmap = drm_gem_shmem_object_mmap,
+ .vm_ops = &drm_gem_shmem_vm_ops,
};
bool virtio_gpu_is_shmem(struct virtio_gpu_object *bo)
diff --git a/include/drm/drm_gem_shmem_helper.h b/include/drm/drm_gem_shmem_helper.h
index 68347b63fc71..d0a57853c188 100644
--- a/include/drm/drm_gem_shmem_helper.h
+++ b/include/drm/drm_gem_shmem_helper.h
@@ -137,6 +137,8 @@ struct sg_table *drm_gem_shmem_get_pages_sgt(struct drm_gem_shmem_object *shmem)
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;
+
/*
* GEM object functions
*/
--
2.38.1