gpu: nvgpu: add ref counting for GPU sched ctrl

Jira VFND-1968

Change-Id: Id84c5732e312e44db3d412df5c21e429227dd7fa
Signed-off-by: Thomas Fleury <tfleury@nvidia.com>
Reviewed-on: http://git-master/r/1171286
(cherry picked from commit 13a3a4355914635ed175708affef17dc8ef0b133)
Reviewed-on: http://git-master/r/1177824
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Richard Zhao <rizhao@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Alex Waterman <alexw@nvidia.com>
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/sched_gk20a.h b/drivers/gpu/nvgpu/gk20a/sched_gk20a.h
index 8f533056..0ae13783 100644
--- a/drivers/gpu/nvgpu/gk20a/sched_gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/sched_gk20a.h
@@ -32,6 +32,7 @@ struct gk20a_sched_ctrl {
         size_t bitmap_size;
         u64 *active_tsg_bitmap;
         u64 *recent_tsg_bitmap;
+        u64 *ref_tsg_bitmap;
 
         wait_queue_head_t readout_wq;
 };