tree b37f389fc6c5b6700feeb08329bd2a6c5c1a431b
parent afcd526b1ba9dbc5707f9bd8d2d032ae62e337dc
author Joshua Aberback <joshua.aberback@amd.com> 1554146484 -0400
committer Alex Deucher <alexander.deucher@amd.com> 1555305739 -0500

drm/amd/display: Add profiling tools for bandwidth validation

[Why]
We used this change to investigate the performance of bandwidth validation,
it will be useful to have if we need to investigate further.

[How]
We use performance counter tick numbers to profile performance, they live
at dc->debug.bw_val_profile (set .enable in debugger to turn on measuring).

Signed-off-by: Joshua Aberback <joshua.aberback@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>