[PATCH libdrm 2/2] drm: merge and cleanup amdgpu_bo_free

[Monk Liu]

From: Monk Liu <monk.liu at amd.com>

since bo_reference and bo_internal_free are
all only used by bo_free, so we just merge them
together

Change-Id: I72ebc9c8bcfcd23f4d52a1385db871a95c23859e
Signed-off-by: Monk Liu <monk.liu at amd.com>
---
 amdgpu/amdgpu_bo.c       | 52 +++++++++++++++++++++++++++---------------------
 amdgpu/amdgpu_internal.h | 33 ------------------------------
 2 files changed, 29 insertions(+), 56 deletions(-)

diff --git a/amdgpu/amdgpu_bo.c b/amdgpu/amdgpu_bo.c
index 82f38c0..901673a 100644
--- a/amdgpu/amdgpu_bo.c
+++ b/amdgpu/amdgpu_bo.c
@@ -52,27 +52,6 @@ static void amdgpu_close_kms_handle(amdgpu_device_handle dev,
 	drmIoctl(dev->fd, DRM_IOCTL_GEM_CLOSE, &args);
 }
 
-void amdgpu_bo_free_internal(amdgpu_bo_handle bo)
-{
-	/* Remove the buffer from the hash tables. */
-	util_hash_table_remove(bo->dev->bo_handles,
-			       (void*)(uintptr_t)bo->handle);
-	if (bo->flink_name) {
-		util_hash_table_remove(bo->dev->bo_flink_names,
-				       (void*)(uintptr_t)bo->flink_name);
-	}
-
-	/* Release CPU access. */
-	if (bo->cpu_map_count > 0) {
-		bo->cpu_map_count = 1;
-		amdgpu_bo_cpu_unmap(bo);
-	}
-
-	amdgpu_close_kms_handle(bo->dev, bo->handle);
-	pthread_mutex_destroy(&bo->cpu_access_mutex);
-	free(bo);
-}
-
 int amdgpu_bo_alloc(amdgpu_device_handle dev,
 		    struct amdgpu_bo_alloc_request *alloc_buffer,
 		    amdgpu_bo_handle *buf_handle)
@@ -415,8 +394,35 @@ int amdgpu_bo_import(amdgpu_device_handle dev,
 
 int amdgpu_bo_free(amdgpu_bo_handle buf_handle)
 {
-	/* Just drop the reference. */
-	amdgpu_bo_reference(&buf_handle, NULL);
+	struct amdgpu_device *dev;
+	struct amdgpu_bo *bo = buf_handle;
+
+	assert(bo != NULL);
+	dev = bo->dev;
+	pthread_mutex_lock(&dev->bo_table_mutex);
+
+	if (update_references(&bo->refcount, NULL)) {
+		/* Remove the buffer from the hash tables. */
+		util_hash_table_remove(dev->bo_handles,
+					(void*)(uintptr_t)bo->handle);
+
+		if (bo->flink_name) {
+			util_hash_table_remove(dev->bo_flink_names,
+						(void*)(uintptr_t)bo->flink_name);
+		}
+
+		/* Release CPU access. */
+		if (bo->cpu_map_count > 0) {
+			bo->cpu_map_count = 1;
+			amdgpu_bo_cpu_unmap(bo);
+		}
+
+		amdgpu_close_kms_handle(dev, bo->handle);
+		pthread_mutex_destroy(&bo->cpu_access_mutex);
+		free(bo);
+	}
+
+	pthread_mutex_unlock(&dev->bo_table_mutex);
 	return 0;
 }
 
diff --git a/amdgpu/amdgpu_internal.h b/amdgpu/amdgpu_internal.h
index 79da0e7..a6bf831 100644
--- a/amdgpu/amdgpu_internal.h
+++ b/amdgpu/amdgpu_internal.h
@@ -133,8 +133,6 @@ struct amdgpu_semaphore {
 
 void amdgpu_device_free_internal(amdgpu_device_handle dev);
 
-void amdgpu_bo_free_internal(amdgpu_bo_handle bo);
-
 void amdgpu_vamgr_init(struct amdgpu_bo_va_mgr *mgr, uint64_t start,
 		       uint64_t max, uint64_t alignment);
 
@@ -177,37 +175,6 @@ static inline bool update_references(atomic_t *dst, atomic_t *src)
 }
 
 /**
- * Assignment between two amdgpu_bo pointers with reference counting.
- *
- * Usage:
- *    struct amdgpu_bo *dst = ... , *src = ...;
- *
- *    dst = src;
- *    // No reference counting. Only use this when you need to move
- *    // a reference from one pointer to another.
- *
- *    amdgpu_bo_reference(&dst, src);
- *    // Reference counters are updated. dst is decremented and src is
- *    // incremented. dst is freed if its reference counter is 0.
- */
-static inline void amdgpu_bo_reference(struct amdgpu_bo **dst,
-					struct amdgpu_bo *src)
-{
-	pthread_mutex_t *mlock;
-	struct amdgpu_bo* bo = *dst;
-
-	assert(bo != NULL);
-	mlock = &bo->dev->bo_table_mutex;
-	pthread_mutex_lock(mlock);
-
-	if (update_references(&bo->refcount, src?&src->refcount:NULL))
-		amdgpu_bo_free_internal(bo);
-
-	pthread_mutex_unlock(mlock);
-	*dst = src;
-}
-
-/**
  * Assignment between two amdgpu_device pointers with reference counting.
  *
  * Usage:
-- 
2.7.4