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, 3 insertions, 3 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/mm_gk20a.c b/drivers/gpu/nvgpu/gk20a/mm_gk20a.c
index 16fe7149..e21be1e5 100644
--- a/drivers/gpu/nvgpu/gk20a/mm_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/mm_gk20a.c
@@ -617,7 +617,7 @@ static int gk20a_init_vidmem(struct mm_gk20a *mm)
         nvgpu_mutex_init(&mm->vidmem.first_clear_mutex);
 
         INIT_WORK(&mm->vidmem.clear_mem_worker, gk20a_vidmem_clear_mem_worker);
-        atomic64_set(&mm->vidmem.bytes_pending, 0);
+        nvgpu_atomic64_set(&mm->vidmem.bytes_pending, 0);
         nvgpu_init_list_node(&mm->vidmem.clear_list_head);
         nvgpu_mutex_init(&mm->vidmem.clear_list_mutex);
 
@@ -1165,7 +1165,7 @@ int gk20a_vidmem_get_space(struct gk20a *g, u64 *space)
 
         nvgpu_mutex_acquire(&g->mm.vidmem.clear_list_mutex);
         *space = nvgpu_alloc_space(allocator) +
-                atomic64_read(&g->mm.vidmem.bytes_pending);
+                nvgpu_atomic64_read(&g->mm.vidmem.bytes_pending);
         nvgpu_mutex_release(&g->mm.vidmem.clear_list_mutex);
         return 0;
 #else
@@ -1483,7 +1483,7 @@ static void gk20a_vidmem_clear_mem_worker(struct work_struct *work)
                            (u64)get_vidmem_page_alloc(mem->priv.sgt->sgl));
                 nvgpu_free_sgtable(g, &mem->priv.sgt);
 
-                WARN_ON(atomic64_sub_return(mem->size,
+                WARN_ON(nvgpu_atomic64_sub_return(mem->size,
                                         &g->mm.vidmem.bytes_pending) < 0);
                 mem->size = 0;
                 mem->aperture = APERTURE_INVALID;