gpu: nvgpu: add TSG support to runlists

- when a TSG channel is made runnable, add it to TSG's
  runnable list
- when a TSG channel is removed from runlist, remove it
  from TSG's runnable list

When we rewrite the entire runlist :
- first add all the channels which are not part of any TSG
- then find all active TSGs, add an entry in runlist for the TSG
  (with TSG id and length of TSG)
- then write entries for each channel in that TSG

Bug 1470692

Change-Id: Ic55a4d5959abc72cd20b8224eb4c31d3ff411861
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/416612
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/tsg_gk20a.c b/drivers/gpu/nvgpu/gk20a/tsg_gk20a.c
index d9e10d30..7c65c695 100644
--- a/drivers/gpu/nvgpu/gk20a/tsg_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/tsg_gk20a.c
@@ -50,7 +50,7 @@ int gk20a_bind_runnable_channel_to_tsg(struct channel_gk20a *ch, int tsgid)
         tsg->num_runnable_channels += 1;
         mutex_unlock(&tsg->ch_list_lock);
 
-        return 0;
+        return tsg->num_runnable_channels;
 }
 
 int gk20a_unbind_channel_from_tsg(struct channel_gk20a *ch, int tsgid)
@@ -68,7 +68,7 @@ int gk20a_unbind_channel_from_tsg(struct channel_gk20a *ch, int tsgid)
         tsg->num_runnable_channels -= 1;
         mutex_unlock(&tsg->ch_list_lock);
 
-        return 0;
+        return tsg->num_runnable_channels;
 }
 
 /*