From: Qiang Yu <Qiang.Yu@xxxxxxx> Change-Id: Icdc00d3e22e48120ca6f4d73ffd05ba43551ad2c Signed-off-by: Qiang Yu <Qiang.Yu at amd.com> --- amdgpu/amdgpu.h | 13 +++++++++++++ amdgpu/amdgpu_bo.c | 6 ++++++ 2 files changed, 19 insertions(+) diff --git a/amdgpu/amdgpu.h b/amdgpu/amdgpu.h index 693d841..d8c436f 100644 --- a/amdgpu/amdgpu.h +++ b/amdgpu/amdgpu.h @@ -716,6 +716,19 @@ int amdgpu_find_bo_by_cpu_mapping(amdgpu_device_handle dev, int amdgpu_bo_free(amdgpu_bo_handle buf_handle); /** + * Increase the reference count of a buffer object + * + * \param bo - \c [in] Buffer object handle to increase the reference count + * + * \return 0 on success\n + * <0 - Negative POSIX Error code + * + * \sa amdgpu_bo_alloc(), amdgpu_bo_free() + * +*/ +int amdgpu_bo_inc_ref(amdgpu_bo_handle bo); + +/** * Request CPU access to GPU accessable memory * * \param buf_handle - \c [in] Buffer handle diff --git a/amdgpu/amdgpu_bo.c b/amdgpu/amdgpu_bo.c index aa0d001..c3f5fb9 100644 --- a/amdgpu/amdgpu_bo.c +++ b/amdgpu/amdgpu_bo.c @@ -424,6 +424,12 @@ int amdgpu_bo_free(amdgpu_bo_handle buf_handle) return 0; } +int amdgpu_bo_inc_ref(amdgpu_bo_handle bo) +{ + atomic_inc(&bo->refcount); + return 0; +} + int amdgpu_bo_cpu_map(amdgpu_bo_handle bo, void **cpu) { union drm_amdgpu_gem_mmap args; -- 1.9.1