gpu: nvgpu: Add wrapper over atomic_t and atomic64_t

- added wrapper structs nvgpu_atomic_t and nvgpu_atomic64_t over
  atomic_t and atomic64_t
- added nvgpu_atomic_* and nvgpu_atomic64_* APIs to access the above
  wrappers.

JIRA NVGPU-121

Change-Id: I61667bb0a84c2fc475365abb79bffb42b8b4786a
Signed-off-by: Debarshi Dutta <ddutta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1533044
Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com>
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
GVS: Gerrit_Virtual_Submit

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/gpu/nvgpu/common/linux/dma.c b/drivers/gpu/nvgpu/common/linux/dma.c
index ea5b2837..2116053d 100644
--- a/drivers/gpu/nvgpu/common/linux/dma.c
+++ b/drivers/gpu/nvgpu/common/linux/dma.c
@@ -197,7 +197,7 @@ int nvgpu_dma_alloc_flags_vid_at(struct gk20a *g, unsigned long flags,
         WARN_ON(flags != NVGPU_DMA_NO_KERNEL_MAPPING);
 
         nvgpu_mutex_acquire(&g->mm.vidmem.clear_list_mutex);
-        before_pending = atomic64_read(&g->mm.vidmem.bytes_pending);
+        before_pending = atomic64_read(&g->mm.vidmem.bytes_pending.atomic_var);
         addr = __nvgpu_dma_alloc(vidmem_alloc, at, size);
         nvgpu_mutex_release(&g->mm.vidmem.clear_list_mutex);
         if (!addr) {
@@ -394,7 +394,7 @@ static void nvgpu_dma_free_vid(struct gk20a *g, struct nvgpu_mem *mem)
                 was_empty = nvgpu_list_empty(&g->mm.vidmem.clear_list_head);
                 nvgpu_list_add_tail(&mem->clear_list_entry,
                               &g->mm.vidmem.clear_list_head);
-                atomic64_add(mem->size, &g->mm.vidmem.bytes_pending);
+                atomic64_add(mem->size, &g->mm.vidmem.bytes_pending.atomic_var);
                 nvgpu_mutex_release(&g->mm.vidmem.clear_list_mutex);
 
                 if (was_empty) {