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

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[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>

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Joshua Aberback 2019-04-01 15:21:24 -04:00 • committed by Alex Deucher

parent 254eb07cb0

commit 42351c66ae

1 changed files with 13 additions and 0 deletions

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drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c

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