gpu: nvgpu: add NVGPU_SUBMIT_GPFIFO_FLAGS_RESCHEDULE_RUNLIST

NVGPU_SUBMIT_GPFIFO_FLAGS_RESCHEDULE_RUNLIST causes host to expire
current timeslice and reschedule from front of runlist.
This can be used with NVGPU_RUNLIST_INTERLEAVE_LEVEL_HIGH to make a
channel start sooner after submit rather than waiting for natural
timeslice expiration or block/finish of currently running channel.

Bug 1968813

Change-Id: I632e87c5f583a09ec8bf521dc73f595150abebb0
Signed-off-by: David Li <davli@nvidia.com>
Reviewed-on: http://git-master/r/#/c/1537198
Reviewed-on: https://git-master.nvidia.com/r/1537198
Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

2 files changed, 4 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/vgpu/gp10b/vgpu_fifo_gp10b.c b/drivers/gpu/nvgpu/vgpu/gp10b/vgpu_fifo_gp10b.c
index 52e90f33..1b2273ba 100644
--- a/drivers/gpu/nvgpu/vgpu/gp10b/vgpu_fifo_gp10b.c
+++ b/drivers/gpu/nvgpu/vgpu/gp10b/vgpu_fifo_gp10b.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-2016, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2015-2017, 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,
@@ -17,4 +17,5 @@ void vgpu_gp10b_init_fifo_ops(struct gpu_ops *gops)
 {
         /* syncpoint protection not supported yet */
         gops->fifo.resetup_ramfc = NULL;
+        gops->fifo.reschedule_runlist = NULL;
 }
diff --git a/drivers/gpu/nvgpu/vgpu/vgpu.c b/drivers/gpu/nvgpu/vgpu/vgpu.c
index 06971bb0..33472213 100644
--- a/drivers/gpu/nvgpu/vgpu/vgpu.c
+++ b/drivers/gpu/nvgpu/vgpu/vgpu.c
@@ -358,6 +358,8 @@ static int vgpu_init_gpu_characteristics(struct gk20a *g)
         /* features vgpu does not support */
         g->gpu_characteristics.flags &= ~NVGPU_GPU_FLAGS_SUPPORT_CYCLE_STATS;
         g->gpu_characteristics.flags &= ~NVGPU_GPU_FLAGS_SUPPORT_MAP_COMPBITS;
+        g->gpu_characteristics.flags &=
+                ~NVGPU_GPU_FLAGS_SUPPORT_RESCHEDULE_RUNLIST;
 
         return 0;
 }