1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/gk20a.h b/drivers/gpu/nvgpu/gk20a/gk20a.h
index 1d867912..79118fca 100644
--- a/drivers/gpu/nvgpu/gk20a/gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/gk20a.h
@@ -1025,6 +1025,12 @@ struct gk20a {
         u32 log_trace;
 
         struct rw_semaphore busy_lock;
+        /*
+         * Guards access to hardware when usual gk20a_{busy,idle} are skipped
+         * for submits and held for channel lifetime but dropped for an ongoing
+         * gk20a_do_idle().
+         */
+        struct rw_semaphore deterministic_busy;
 
         struct nvgpu_falcon pmu_flcn;
         struct nvgpu_falcon sec2_flcn;