From: Gerd Hoffmann <kraxel@redhat.com>
To: dri-devel@lists.freedesktop.org
Cc: tzimmermann@suse.de, Gerd Hoffmann <kraxel@redhat.com>,
Christian Koenig <christian.koenig@amd.com>,
Huang Rui <ray.huang@amd.com>, David Airlie <airlied@linux.ie>,
Daniel Vetter <daniel@ffwll.ch>,
linux-kernel@vger.kernel.org (open list)
Subject: [PATCH v4 08/17] drm/ttm: factor out ttm_bo_mmap_vma_setup
Date: Thu, 8 Aug 2019 15:44:08 +0200 [thread overview]
Message-ID: <20190808134417.10610-9-kraxel@redhat.com> (raw)
In-Reply-To: <20190808134417.10610-1-kraxel@redhat.com>
Factor out ttm vma setup to a new function.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
include/drm/ttm/ttm_bo_api.h | 8 ++++++
drivers/gpu/drm/ttm/ttm_bo_vm.c | 47 ++++++++++++++++++---------------
2 files changed, 33 insertions(+), 22 deletions(-)
diff --git a/include/drm/ttm/ttm_bo_api.h b/include/drm/ttm/ttm_bo_api.h
index 65ef5376de59..2c5fab0f3ed4 100644
--- a/include/drm/ttm/ttm_bo_api.h
+++ b/include/drm/ttm/ttm_bo_api.h
@@ -734,6 +734,14 @@ int ttm_fbdev_mmap(struct vm_area_struct *vma, struct ttm_buffer_object *bo);
int ttm_bo_mmap(struct file *filp, struct vm_area_struct *vma,
struct ttm_bo_device *bdev);
+/**
+ * ttm_bo_mmap_vma_setup - initialize vma for ttm bo mmap
+ *
+ * @bo: The buffer object.
+ * @vma: vma as input from the mmap method.
+ */
+void ttm_bo_mmap_vma_setup(struct ttm_buffer_object *bo, struct vm_area_struct *vma);
+
void *ttm_kmap_atomic_prot(struct page *page, pgprot_t prot);
void ttm_kunmap_atomic_prot(void *addr, pgprot_t prot);
diff --git a/drivers/gpu/drm/ttm/ttm_bo_vm.c b/drivers/gpu/drm/ttm/ttm_bo_vm.c
index d4eecde8d050..903563a7496a 100644
--- a/drivers/gpu/drm/ttm/ttm_bo_vm.c
+++ b/drivers/gpu/drm/ttm/ttm_bo_vm.c
@@ -426,6 +426,29 @@ static struct ttm_buffer_object *ttm_bo_vm_lookup(struct ttm_bo_device *bdev,
return bo;
}
+void ttm_bo_mmap_vma_setup(struct ttm_buffer_object *bo, struct vm_area_struct *vma)
+{
+ vma->vm_ops = &ttm_bo_vm_ops;
+
+ /*
+ * Note: We're transferring the bo reference to
+ * vma->vm_private_data here.
+ */
+
+ vma->vm_private_data = bo;
+
+ /*
+ * We'd like to use VM_PFNMAP on shared mappings, where
+ * (vma->vm_flags & VM_SHARED) != 0, for performance reasons,
+ * but for some reason VM_PFNMAP + x86 PAT + write-combine is very
+ * bad for performance. Until that has been sorted out, use
+ * VM_MIXEDMAP on all mappings. See freedesktop.org bug #75719
+ */
+ vma->vm_flags |= VM_MIXEDMAP;
+ vma->vm_flags |= VM_IO | VM_DONTEXPAND | VM_DONTDUMP;
+}
+EXPORT_SYMBOL(ttm_bo_mmap_vma_setup);
+
int ttm_bo_mmap(struct file *filp, struct vm_area_struct *vma,
struct ttm_bo_device *bdev)
{
@@ -449,24 +472,7 @@ int ttm_bo_mmap(struct file *filp, struct vm_area_struct *vma,
if (unlikely(ret != 0))
goto out_unref;
- vma->vm_ops = &ttm_bo_vm_ops;
-
- /*
- * Note: We're transferring the bo reference to
- * vma->vm_private_data here.
- */
-
- vma->vm_private_data = bo;
-
- /*
- * We'd like to use VM_PFNMAP on shared mappings, where
- * (vma->vm_flags & VM_SHARED) != 0, for performance reasons,
- * but for some reason VM_PFNMAP + x86 PAT + write-combine is very
- * bad for performance. Until that has been sorted out, use
- * VM_MIXEDMAP on all mappings. See freedesktop.org bug #75719
- */
- vma->vm_flags |= VM_MIXEDMAP;
- vma->vm_flags |= VM_IO | VM_DONTEXPAND | VM_DONTDUMP;
+ ttm_bo_mmap_vma_setup(bo, vma);
return 0;
out_unref:
ttm_bo_put(bo);
@@ -481,10 +487,7 @@ int ttm_fbdev_mmap(struct vm_area_struct *vma, struct ttm_buffer_object *bo)
ttm_bo_get(bo);
- vma->vm_ops = &ttm_bo_vm_ops;
- vma->vm_private_data = bo;
- vma->vm_flags |= VM_MIXEDMAP;
- vma->vm_flags |= VM_IO | VM_DONTEXPAND;
+ ttm_bo_mmap_vma_setup(bo, vma);
return 0;
}
EXPORT_SYMBOL(ttm_fbdev_mmap);
--
2.18.1
next prev parent reply other threads:[~2019-08-08 13:44 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20190808134417.10610-1-kraxel@redhat.com>
2019-08-08 13:44 ` [PATCH v4 01/17] drm/ttm: turn ttm_bo_device.vma_manager into a pointer Gerd Hoffmann
2019-09-03 9:49 ` Daniel Vetter
2019-08-08 13:44 ` [PATCH v4 02/17] drm/ttm: add gem_ttm_bo_device_init() Gerd Hoffmann
2019-08-08 13:44 ` [PATCH v4 03/17] drm/vram: switch vram helpers to the new gem_ttm_bo_device_init() Gerd Hoffmann
2019-08-08 13:44 ` [PATCH v4 04/17] drm/qxl: switch qxl " Gerd Hoffmann
2019-08-08 13:44 ` [PATCH v4 05/17] drm: add mmap() to drm_gem_object_funcs Gerd Hoffmann
2019-09-03 9:48 ` Daniel Vetter
2019-09-06 12:13 ` Gerd Hoffmann
2019-09-06 13:10 ` Daniel Vetter
2019-09-09 10:06 ` Gerd Hoffmann
2019-08-08 13:44 ` [PATCH v4 06/17] drm/shmem: switch shmem helper to drm_gem_object_funcs->mmap Gerd Hoffmann
2019-08-08 22:51 ` Rob Herring
2019-08-08 13:44 ` [PATCH v4 07/17] drm/shmem: drop DEFINE_DRM_GEM_SHMEM_FOPS Gerd Hoffmann
2019-08-08 22:51 ` Rob Herring
2019-08-08 13:44 ` Gerd Hoffmann [this message]
2019-08-08 13:44 ` [PATCH v4 09/17] drm/ttm: add drm_gem_ttm_mmap() Gerd Hoffmann
2019-08-08 13:44 ` [PATCH v4 10/17] drm/vram: switch vram helper to drm_gem_object_funcs->mmap codepath Gerd Hoffmann
2019-08-08 13:44 ` [PATCH v4 11/17] drm/vram: drop verify_access Gerd Hoffmann
2019-08-08 13:44 ` [PATCH v4 12/17] drm: drop DRM_VRAM_MM_FILE_OPERATIONS Gerd Hoffmann
2019-08-08 13:44 ` [PATCH v4 13/17] drm/qxl: use drm_gem_object_funcs Gerd Hoffmann
2019-08-08 13:44 ` [PATCH v4 14/17] drm/qxl: drop qxl_ttm_fault Gerd Hoffmann
2019-08-08 13:44 ` [PATCH v4 15/17] drm/qxl: switch qxl to drm_gem_object_funcs->mmap codepath Gerd Hoffmann
2019-08-08 13:44 ` [PATCH v4 16/17] drm/qxl: drop verify_access Gerd Hoffmann
2019-08-08 13:44 ` [PATCH v4 17/17] drm/qxl: use DEFINE_DRM_GEM_FOPS() Gerd Hoffmann
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