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, 0 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/gv11b/subctx_gv11b.h b/drivers/gpu/nvgpu/gv11b/subctx_gv11b.h
index 5e4e99f5..d199711d 100644
--- a/drivers/gpu/nvgpu/gv11b/subctx_gv11b.h
+++ b/drivers/gpu/nvgpu/gv11b/subctx_gv11b.h
@@ -25,5 +25,4 @@ void gv11b_free_subctx_header(struct channel_gk20a *c);
 
 int gv11b_update_subctx_header(struct channel_gk20a *c, u64 gpu_va);
 
-u32 gv11b_get_max_subctx_count(struct gk20a *g);
 #endif /* __SUBCONTEXT_GV11B_H__ */