gpu: nvgpu: Make graphics context property of TSG

Move graphics context ownership to TSG instead of channel. Combine
channel_ctx_gk20a and gr_ctx_desc to one structure, because the split
between them was arbitrary. Move context header to be property of
channel.

Bug 1842197

Change-Id: I410e3262f80b318d8528bcbec270b63a2d8d2ff9
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1639532
Reviewed-by: Seshendra Gadagottu <sgadagottu@nvidia.com>
Tested-by: Seshendra Gadagottu <sgadagottu@nvidia.com>
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 4 insertions, 9 deletions

diff --git a/drivers/gpu/nvgpu/common/linux/sched.c b/drivers/gpu/nvgpu/common/linux/sched.c
index fc3f6ed8..e6211790 100644
--- a/drivers/gpu/nvgpu/common/linux/sched.c
+++ b/drivers/gpu/nvgpu/common/linux/sched.c
@@ -198,15 +198,10 @@ static int gk20a_sched_dev_ioctl_get_params(struct gk20a_sched_ctrl *sched,
         arg->runlist_interleave = tsg->interleave_level;
         arg->timeslice = tsg->timeslice_us;
 
-        if (tsg->tsg_gr_ctx) {
-                arg->graphics_preempt_mode =
-                        tsg->tsg_gr_ctx->graphics_preempt_mode;
-                arg->compute_preempt_mode =
-                        tsg->tsg_gr_ctx->compute_preempt_mode;
-        } else {
-                arg->graphics_preempt_mode = 0;
-                arg->compute_preempt_mode = 0;
-        }
+        arg->graphics_preempt_mode =
+                tsg->gr_ctx.graphics_preempt_mode;
+        arg->compute_preempt_mode =
+                tsg->gr_ctx.compute_preempt_mode;
 
         nvgpu_ref_put(&tsg->refcount, nvgpu_ioctl_tsg_release);