linux-stable.git/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_trace.h, branch v5.11

drm/amd/display: Add tracepoint for capturing clocks state

2020-10-26T17:34:26+00:00

The clock state update is the source of many problems, and capturing
this sort of information helps debug. This commit introduces tracepoints
for capturing clock values and also add traces in DCE, DCN1, DCN2x, and
DCN3.

Signed-off-by: Rodrigo Siqueira 
Acked-by: Aurabindo Pillai 
Signed-off-by: Alex Deucher

drm/amd/display: Add pipe_state tracepoint

2020-10-26T17:34:20+00:00

This commit introduces a trace mechanism for struct pipe_ctx by adding a
middle layer struct in the amdgpu_dm_trace.h for capturing the most
important data from struct pipe_ctx and showing its data via tracepoint.
This tracepoint was added to dc.c and dcn10_hw_sequencer, however, it
can be added to other DCN architecture.

Signed-off-by: Rodrigo Siqueira 
Acked-by: Aurabindo Pillai 
Signed-off-by: Alex Deucher

drm/amd/display: Add tracepoint for amdgpu_dm

2020-10-26T17:34:14+00:00

Debug amdgpu_dm could be a complicated task, therefore, this commit adds
tracepoints in some convenient functions such as plane and connector
check inside amdgpu_dm.

Signed-off-by: Rodrigo Siqueira 
Acked-by: Aurabindo Pillai 
Signed-off-by: Alex Deucher

drm/amd/display: Rework registers tracepoint

2020-10-26T17:34:08+00:00

amdgpu_dc_rreg and amdgpu_dc_wreg are very similar, for this reason,
this commits abstract these two events by using DECLARE_EVENT_CLASS and
create an instance of it for each one of these events.

Signed-off-by: Rodrigo Siqueira 
Acked-by: Aurabindo Pillai 
Signed-off-by: Alex Deucher

drm/amd/display: Decouple amdgpu_dm_trace from service

2020-10-26T17:33:59+00:00

Our DC currently uses some of the tracepoint function inside a DC
header, which means that many other files implicitly include part of the
trace function. This situation limits how we can expand this feature for
other parts of the driver by generating multiple compilation errors when
we try to reuse some of the existing structures. This commit decouples
part of the amdgpu_dm_trace from DC core to simplify the trace
enlargement in future changes.

Signed-off-by: Rodrigo Siqueira 
Acked-by: Aurabindo Pillai 
Signed-off-by: Alex Deucher

drm/amd/display: Add tracing to dc

2018-12-05T22:49:49+00:00

[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 
Reviewed-by: Harry Wentland 
Acked-by: Leo Li 
Signed-off-by: Alex Deucher