linux/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_trace.h, branch v5.0Mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/
https://git.shady.money/linux/atom?h=v5.02018-12-05T22:49:49Zdrm/amd/display: Add tracing to dc2018-12-05T22:49:49ZDavid FrancisDavid.Francis@amd.com2018-11-30T14:57:06Zurn:sha1:0cf5eb76e2b453b3d159082eb4707c03a1686cf7
[Why]
Tracing is a useful and cheap debug functionality
[How]
This creates a new trace system amdgpu_dm, currently with
three trace events
amdgpu_dc_rreg and amdgpu_dc_wreg report the address and value
of any dc register reads and writes
amdgpu_dc_performance requires at least one of those two to be
enabled. It counts the register reads and writes since the
last entry
v2: Don't check for NULL before kfree
Signed-off-by: David Francis <David.Francis@amd.com>
Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>