Deepak Nibade 18eee7effe gpu: nvgpu: add refcounting for TSG ...

Add refcounting for TSGs and manage the refcounts as below :
- initialize ref when TSG is opened
- get ref when channel is bound to TSG
- drop the ref when channel is unbound (i.e. during channel close)
- drop the ref when TSG is closed
- when refcount drops to zero, we free the TSG

This refcounting makes it possible to close channels or TSG
in any order

Bug 1470692

Change-Id: Ia4b39164a4582c8169da62a91b9131094c67f5f8
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/495667
(cherry picked from commit be1e198a663d2102e9674978f3d2cca0f2327a6b)
Reviewed-on: http://git-master/r/495955
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>

2015-03-18 12:11:13 -07:00

..

nvgpu

gpu: nvgpu: add refcounting for TSG

2015-03-18 12:11:13 -07:00