gpu: nvgpu: pmu: check before initializing perfmon

We should check if perfmon is enabled before sending
perfmon init command. This is needed for debug purposes.

Change-Id: Ia95a590a76074c469b5d87a5820cd5b2e50d13be
Signed-off-by: Deepak Goyal <dgoyal@nvidia.com>
Reviewed-on: https://git-master/r/1510036
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/include/nvgpu/enabled.h b/drivers/gpu/nvgpu/include/nvgpu/enabled.h
index 78dea193..3bfd4899 100644
--- a/drivers/gpu/nvgpu/include/nvgpu/enabled.h
+++ b/drivers/gpu/nvgpu/include/nvgpu/enabled.h
@@ -38,6 +38,12 @@ struct gk20a;
 #define NVGPU_MM_UNIFIED_MEMORY                 18
 
 /*
+ * PMU flags.
+ */
+/* perfmon enabled or disabled for PMU */
+#define NVGPU_PMU_PERFMON                       48
+
+/*
  * Must be greater than the largest bit offset in the above list.
  */
 #define NVGPU_MAX_ENABLED_BITS                  64