gpu: nvgpu: Nvgpu abstraction for linux barriers.

construct wrapper nvgpu_* methods to replace
mb,rmb,wmb,smp_mb,smp_rmb,smp_wmb,read_barrier_depends and
smp_read_barrier_depends.

NVGPU-122

Change-Id: I8d24dd70fef5cb0fadaacc15f3ab11531667a0df
Signed-off-by: Debarshi <ddutta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1541199
Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com>
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Sourab Gupta <sourabg@nvidia.com>
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/drivers/gpu/nvgpu/common/mm/bitmap_allocator.c b/drivers/gpu/nvgpu/common/mm/bitmap_allocator.c
index eae0475a..274e9c93 100644
--- a/drivers/gpu/nvgpu/common/mm/bitmap_allocator.c
+++ b/drivers/gpu/nvgpu/common/mm/bitmap_allocator.c
@@ -18,6 +18,7 @@
 #include <nvgpu/allocator.h>
 #include <nvgpu/kmem.h>
 #include <nvgpu/bug.h>
+#include <nvgpu/barrier.h>
 
 #include "bitmap_allocator_priv.h"
 
@@ -40,7 +41,7 @@ static int nvgpu_bitmap_alloc_inited(struct nvgpu_allocator *a)
         struct nvgpu_bitmap_allocator *ba = a->priv;
         int inited = ba->inited;
 
-        rmb();
+        nvgpu_smp_rmb();
         return inited;
 }
 
@@ -408,7 +409,7 @@ int nvgpu_bitmap_allocator_init(struct gk20a *g, struct nvgpu_allocator *__a,
                 goto fail;
         }
 
-        wmb();
+        nvgpu_smp_wmb();
         a->inited = true;
 
 #ifdef CONFIG_DEBUG_FS