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, 4 insertions, 3 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/fence_gk20a.c b/drivers/gpu/nvgpu/gk20a/fence_gk20a.c
index 8ad24c44..5fa9a0df 100644
--- a/drivers/gpu/nvgpu/gk20a/fence_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/fence_gk20a.c
@@ -21,6 +21,7 @@
 #include <nvgpu/kmem.h>
 #include <nvgpu/soc.h>
 #include <nvgpu/nvhost.h>
+#include <nvgpu/barrier.h>
 
 #include "gk20a.h"
 #include "channel_gk20a.h"
@@ -73,7 +74,7 @@ static inline bool gk20a_fence_is_valid(struct gk20a_fence *f)
 {
         bool valid = f->valid;
 
-        rmb();
+        nvgpu_smp_rmb();
         return valid;
 }
 
@@ -252,7 +253,7 @@ int gk20a_fence_from_semaphore(
         f->semaphore_wq = semaphore_wq;
 
         /* commit previous writes before setting the valid flag */
-        wmb();
+        nvgpu_smp_wmb();
         f->valid = true;
 
         return 0;
@@ -327,7 +328,7 @@ int gk20a_fence_from_syncpt(
         f->syncpt_value = value;
 
         /* commit previous writes before setting the valid flag */
-        wmb();
+        nvgpu_smp_wmb();
         f->valid = true;
 
         return 0;