gpu: nvgpu: IOCTL to disable timeouts

Add IOCTL NVGPU_DBG_GPU_IOCTL_TIMEOUT to support
disabling/re-enabling scheduler timeout from user space

If user space application is closed without re-enabling
the timeouts, kernel will restore the timeouts' state
while releasing the debug session

This is needed for debugging purpose

Bug 1514061

Change-Id: I32efb47ad09d793f3e7fd8f0aaa9720c8bc91272
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/788176
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 4 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/dbg_gpu_gk20a.h b/drivers/gpu/nvgpu/gk20a/dbg_gpu_gk20a.h
index 27084c0d..fc1f2982 100644
--- a/drivers/gpu/nvgpu/gk20a/dbg_gpu_gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/dbg_gpu_gk20a.h
@@ -1,7 +1,7 @@
 /*
  * Tegra GK20A GPU Debugger Driver
  *
- * Copyright (c) 2013-2014, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2013-2015, NVIDIA CORPORATION.  All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms and conditions of the GNU General Public License,
@@ -53,6 +53,9 @@ struct dbg_session_gk20a {
         /* power enabled or disabled */
         bool is_pg_disabled;
 
+        /* timeouts enabled or disabled */
+        bool is_timeout_disabled;
+
         /*
          * There can be different versions of the whitelists
          * between both global and per-context sets; as well