gpu: nvgpu: Add sysfs nodes for timeslice min/max

The timeslice values that can be selected for a particular channel/tsg
are bounded by a static min/max. This change introduces two sysfs
nodes that allow these bounds to be configured from userspace.

min_timeslice_us
max_timeslice_us

Bug 200251974
Bug 1854791

Change-Id: I5d5a14225eee4090e418c7e43629324114f60768
Signed-off-by: Peter Boonstoppel <pboonstoppel@nvidia.com>
Reviewed-on: http://git-master/r/1280372
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 4 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/nvgpu_common.c b/drivers/gpu/nvgpu/nvgpu_common.c
index a2673b26..7c12616f 100644
--- a/drivers/gpu/nvgpu/nvgpu_common.c
+++ b/drivers/gpu/nvgpu/nvgpu_common.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2016-2017, 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,
@@ -69,6 +69,9 @@ static void nvgpu_init_timeslice(struct gk20a *g)
         g->timeslice_low_priority_us = 1300;
         g->timeslice_medium_priority_us = 2600;
         g->timeslice_high_priority_us = 5200;
+
+        g->min_timeslice_us = 1000;
+        g->max_timeslice_us = 50000;
 }
 
 static void nvgpu_init_pm_vars(struct gk20a *g)