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: I97380c3b211733e682f198c35f35640af203359c
Signed-off-by: Debarshi Dutta <ddutta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1541197
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com>
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: Sourab Gupta <sourabg@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/gv11b/fb_gv11b.c b/drivers/gpu/nvgpu/gv11b/fb_gv11b.c
index 384dfb20..a44589d5 100644
--- a/drivers/gpu/nvgpu/gv11b/fb_gv11b.c
+++ b/drivers/gpu/nvgpu/gv11b/fb_gv11b.c
@@ -19,6 +19,7 @@
 #include <nvgpu/log.h>
 #include <nvgpu/enabled.h>
 #include <nvgpu/gmmu.h>
+#include <nvgpu/barrier.h>
 
 #include "gk20a/gk20a.h"
 #include "gk20a/kind_gk20a.h"
@@ -721,7 +722,7 @@ static void gv11b_fb_fault_buffer_get_ptr_update(struct gk20a *g,
         /* make sure get ptr update is visible to everyone to avoid
          * reading already read entry
          */
-        mb();
+        nvgpu_mb();
 }
 
 static u32 gv11b_fb_fault_buffer_get_index(struct gk20a *g,