gpu: nvgpu: gv11b: add max_subctx_count to g->fifo.t19x

- For better performance. It used to read register every time referencing
  max_subctx_count.
- Avoid reading registers for vgpu.

Jira VFND-3797

Change-Id: Id6e6b15a0d9a035795e8a9a2c6bb63524c5eb544
Signed-off-by: Richard Zhao <rizhao@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1537009
Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com>
Reviewed-by: Seshendra Gadagottu <sgadagottu@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/gv11b/gr_gv11b.c b/drivers/gpu/nvgpu/gv11b/gr_gv11b.c
index 850315f7..b95152eb 100644
--- a/drivers/gpu/nvgpu/gv11b/gr_gv11b.c
+++ b/drivers/gpu/nvgpu/gv11b/gr_gv11b.c
@@ -2021,7 +2021,7 @@ static void gv11b_write_bundle_veid_state(struct gk20a *g, u32 index)
         u32 j;
         u32  num_subctx, err = 0;
 
-        num_subctx = gv11b_get_max_subctx_count(g);
+        num_subctx = g->fifo.t19x.max_subctx_count;
 
         for (j = 0; j < num_subctx; j++) {