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From: Daniel Vetter <daniel.vetter@ffwll.ch>
To: intel-gfx@lists.freedesktop.org
Cc: dri-devel@lists.sourceforge.net, Daniel Vetter <daniel.vetter@ffwll.ch>
Subject: [PATCH 1/6] drm: extract drm_gem_object_init
Date: Fri,  9 Apr 2010 21:05:04 +0200
Message-ID: <1270839909-2669-2-git-send-email-daniel.vetter@ffwll.ch> (raw)
In-Reply-To: <1270839909-2669-1-git-send-email-daniel.vetter@ffwll.ch>

This function can be used by drivers who allocate the drm gem object
on their own. No functional change in here, just preparation.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---
 drivers/gpu/drm/drm_gem.c |   39 +++++++++++++++++++++++++++++----------
 include/drm/drmP.h        |    2 ++
 2 files changed, 31 insertions(+), 10 deletions(-)

diff --git a/drivers/gpu/drm/drm_gem.c b/drivers/gpu/drm/drm_gem.c
index aa89d4b..3b64d0e 100644
--- a/drivers/gpu/drm/drm_gem.c
+++ b/drivers/gpu/drm/drm_gem.c
@@ -124,6 +124,31 @@ drm_gem_destroy(struct drm_device *dev)
 }
 
 /**
+ * Initialize an already allocate GEM object of the specified size with
+ * shmfs backing store.
+ */
+int drm_gem_object_init(struct drm_device *dev,
+			struct drm_gem_object *obj, size_t size)
+{
+	BUG_ON((size & (PAGE_SIZE - 1)) != 0);
+
+	obj->dev = dev;
+	obj->filp = shmem_file_setup("drm mm object", size, VM_NORESERVE);
+	if (IS_ERR(obj->filp))
+		return -ENOMEM;
+
+	kref_init(&obj->refcount);
+	kref_init(&obj->handlecount);
+	obj->size = size;
+
+	atomic_inc(&dev->object_count);
+	atomic_add(obj->size, &dev->object_memory);
+
+	return 0;
+}
+EXPORT_SYMBOL(drm_gem_object_init);
+
+/**
  * Allocate a GEM object of the specified size with shmfs backing store
  */
 struct drm_gem_object *
@@ -131,28 +156,22 @@ drm_gem_object_alloc(struct drm_device *dev, size_t size)
 {
 	struct drm_gem_object *obj;
 
-	BUG_ON((size & (PAGE_SIZE - 1)) != 0);
-
 	obj = kzalloc(sizeof(*obj), GFP_KERNEL);
 	if (!obj)
 		goto free;
 
-	obj->dev = dev;
-	obj->filp = shmem_file_setup("drm mm object", size, VM_NORESERVE);
-	if (IS_ERR(obj->filp))
+	if (drm_gem_object_init(dev, obj, size) != 0)
 		goto free;
 
-	kref_init(&obj->refcount);
-	kref_init(&obj->handlecount);
-	obj->size = size;
 	if (dev->driver->gem_init_object != NULL &&
 	    dev->driver->gem_init_object(obj) != 0) {
 		goto fput;
 	}
-	atomic_inc(&dev->object_count);
-	atomic_add(obj->size, &dev->object_memory);
 	return obj;
 fput:
+	/* Object_init mangles the global counters - readjust them. */
+	atomic_dec(&dev->object_count);
+	atomic_sub(obj->size, &dev->object_memory);
 	fput(obj->filp);
 free:
 	kfree(obj);
diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index 2f3b3a0..b3b57b5 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -1432,6 +1432,8 @@ void drm_gem_object_free(struct kref *kref);
 void drm_gem_object_free_unlocked(struct kref *kref);
 struct drm_gem_object *drm_gem_object_alloc(struct drm_device *dev,
 					    size_t size);
+int drm_gem_object_init(struct drm_device *dev,
+			struct drm_gem_object *obj, size_t size);
 void drm_gem_object_handle_free(struct kref *kref);
 void drm_gem_vm_open(struct vm_area_struct *vma);
 void drm_gem_vm_close(struct vm_area_struct *vma);
-- 
1.6.6.1


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--

  reply index

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-04-09 19:05 [PATCH 0/6] make gem_object embedable and convert i915 driver Daniel Vetter
2010-04-09 19:05 ` Daniel Vetter [this message]
2010-04-09 19:05 ` [PATCH 2/6] drm: free core gem object from driver callbacks Daniel Vetter
2010-04-09 19:05 ` [PATCH 3/6] drm/i915: introduce i915_gem_alloc_object Daniel Vetter
2010-04-09 19:05 ` [PATCH 4/6] drm/i915: embed the gem object into drm_i915_gem_object Daniel Vetter
2010-04-09 19:05 ` [PATCH 5/6] drm/i915: don't use ->driver_private anymore Daniel Vetter
2010-04-09 19:05 ` [PATCH 6/6] drm/i915: drop pointer to drm_gem_object Daniel Vetter
2010-04-12 17:51 ` [PATCH 0/6] make gem_object embedable and convert i915 driver Eric Anholt
2010-04-12 19:19   ` Daniel Vetter
2010-04-13  5:33     ` Dave Airlie
2010-04-13 23:59       ` Eric Anholt

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