tkudav e962ec3fa0 gpu: nvgpu: Set PC sampling HAL to NULL for GP10b+ ...

Pascal+ chips do not support updating PC sampling using register
NV_CTXSW_MAIN_IMAGE_PM (Unlike GM20B, bit 6 = PC_SAMPLING is not
present on GP10b, GV11b and TU104). To correct this in NVGPU, we
are setting the set_pc_sampling HAL to NULL.

We need to make sure devtools also does not call into
these APIs. Until the devtools team updates their code, we would
return success(0) from update_pc_sampling API even if the HAL is
set to NULL. Filed http://nvbugs/200671026 for devtools team.

Bug 200604892
Bug 200671026

Change-Id: I6334d4b2a84d7a0f676d7e2faad4befde5f76310
Signed-off-by: tkudav <tkudav@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2437002
Reviewed-by: automaticguardword <automaticguardword@nvidia.com>
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: svc-mobile-cert <svc-mobile-cert@nvidia.com>
Reviewed-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
GVS: Gerrit_Virtual_Submit
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

2020-12-15 14:13:28 -06:00

..

gpu

gpu: nvgpu: Set PC sampling HAL to NULL for GP10b+

2020-12-15 14:13:28 -06:00