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, 2 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/common/pmu/pmu_pg.c b/drivers/gpu/nvgpu/common/pmu/pmu_pg.c
index 935ae95a..b435f4a7 100644
--- a/drivers/gpu/nvgpu/common/pmu/pmu_pg.c
+++ b/drivers/gpu/nvgpu/common/pmu/pmu_pg.c
@@ -14,6 +14,7 @@
 #include <nvgpu/pmu.h>
 #include <nvgpu/log.h>
 #include <nvgpu/pmuif/nvgpu_gpmu_cmdif.h>
+#include <nvgpu/barrier.h>
 
 #include "gk20a/gk20a.h"
 
@@ -84,7 +85,7 @@ static void pmu_handle_pg_elpg_msg(struct gk20a *g, struct pmu_msg *msg,
                                         true);
                                 WRITE_ONCE(pmu->mscg_stat, PMU_MSCG_DISABLED);
                                 /* make status visible */
-                                smp_mb();
+                                nvgpu_smp_mb();
                         } else
                                 nvgpu_pmu_state_change(g, PMU_STATE_ELPG_BOOTED,
                                         true);