[PATCH 1/2] drm/amd/display: Reduce stack size for dml31_ModeSupportAndSystemConfigurationFull
Michel Dänzer
michel at daenzer.net
Thu Dec 9 16:46:43 UTC 2021
From: Michel Dänzer <mdaenzer at redhat.com>
Move code using the Pipe struct to a new helper function.
Works around[0] this warning (resulting in failure to build a RHEL debug
kernel with Werror enabled):
../drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dcn31/display_mode_vba_31.c: In function ‘dml31_ModeSupportAndSystemConfigurationFull’:
../drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dcn31/display_mode_vba_31.c:5740:1: warning: the frame size of 2144 bytes is larger than 2048 bytes [-Wframe-larger-than=]
The culprit seems to be the Pipe struct, so pull the relevant block out
into its own sub-function. (This is porting
a62427ef9b55 "drm/amd/display: Reduce stack size for dml21_ModeSupportAndSystemConfigurationFull"
from dml31 to dml21)
[0] AFAICT this doesn't actually reduce the total amount of stack which
can be used, just moves some of it from
dml31_ModeSupportAndSystemConfigurationFull to the new helper function,
so the former happens to no longer exceed the limit for a single
function.
Signed-off-by: Michel Dänzer <mdaenzer at redhat.com>
---
.../dc/dml/dcn31/display_mode_vba_31.c | 185 ++++++++++--------
1 file changed, 99 insertions(+), 86 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn31/display_mode_vba_31.c b/drivers/gpu/drm/amd/display/dc/dml/dcn31/display_mode_vba_31.c
index 7e937bdcea00..8965f9af9d0a 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn31/display_mode_vba_31.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn31/display_mode_vba_31.c
@@ -3949,6 +3949,102 @@ static double TruncToValidBPP(
return BPP_INVALID;
}
+static noinline void CalculatePrefetchSchedulePerPlane(
+ struct display_mode_lib *mode_lib,
+ double HostVMInefficiencyFactor,
+ int i,
+ unsigned j,
+ unsigned k)
+{
+ struct vba_vars_st *v = &mode_lib->vba;
+ Pipe myPipe;
+
+ myPipe.DPPCLK = v->RequiredDPPCLK[i][j][k];
+ myPipe.DISPCLK = v->RequiredDISPCLK[i][j];
+ myPipe.PixelClock = v->PixelClock[k];
+ myPipe.DCFCLKDeepSleep = v->ProjectedDCFCLKDeepSleep[i][j];
+ myPipe.DPPPerPlane = v->NoOfDPP[i][j][k];
+ myPipe.ScalerEnabled = v->ScalerEnabled[k];
+ myPipe.SourceScan = v->SourceScan[k];
+ myPipe.BlockWidth256BytesY = v->Read256BlockWidthY[k];
+ myPipe.BlockHeight256BytesY = v->Read256BlockHeightY[k];
+ myPipe.BlockWidth256BytesC = v->Read256BlockWidthC[k];
+ myPipe.BlockHeight256BytesC = v->Read256BlockHeightC[k];
+ myPipe.InterlaceEnable = v->Interlace[k];
+ myPipe.NumberOfCursors = v->NumberOfCursors[k];
+ myPipe.VBlank = v->VTotal[k] - v->VActive[k];
+ myPipe.HTotal = v->HTotal[k];
+ myPipe.DCCEnable = v->DCCEnable[k];
+ myPipe.ODMCombineIsEnabled = v->ODMCombineEnablePerState[i][k] == dm_odm_combine_mode_4to1
+ || v->ODMCombineEnablePerState[i][k] == dm_odm_combine_mode_2to1;
+ myPipe.SourcePixelFormat = v->SourcePixelFormat[k];
+ myPipe.BytePerPixelY = v->BytePerPixelY[k];
+ myPipe.BytePerPixelC = v->BytePerPixelC[k];
+ myPipe.ProgressiveToInterlaceUnitInOPP = v->ProgressiveToInterlaceUnitInOPP;
+ v->NoTimeForPrefetch[i][j][k] = CalculatePrefetchSchedule(
+ mode_lib,
+ HostVMInefficiencyFactor,
+ &myPipe,
+ v->DSCDelayPerState[i][k],
+ v->DPPCLKDelaySubtotal + v->DPPCLKDelayCNVCFormater,
+ v->DPPCLKDelaySCL,
+ v->DPPCLKDelaySCLLBOnly,
+ v->DPPCLKDelayCNVCCursor,
+ v->DISPCLKDelaySubtotal,
+ v->SwathWidthYThisState[k] / v->HRatio[k],
+ v->OutputFormat[k],
+ v->MaxInterDCNTileRepeaters,
+ dml_min(v->MaxVStartup, v->MaximumVStartup[i][j][k]),
+ v->MaximumVStartup[i][j][k],
+ v->GPUVMMaxPageTableLevels,
+ v->GPUVMEnable,
+ v->HostVMEnable,
+ v->HostVMMaxNonCachedPageTableLevels,
+ v->HostVMMinPageSize,
+ v->DynamicMetadataEnable[k],
+ v->DynamicMetadataVMEnabled,
+ v->DynamicMetadataLinesBeforeActiveRequired[k],
+ v->DynamicMetadataTransmittedBytes[k],
+ v->UrgLatency[i],
+ v->ExtraLatency,
+ v->TimeCalc,
+ v->PDEAndMetaPTEBytesPerFrame[i][j][k],
+ v->MetaRowBytes[i][j][k],
+ v->DPTEBytesPerRow[i][j][k],
+ v->PrefetchLinesY[i][j][k],
+ v->SwathWidthYThisState[k],
+ v->PrefillY[k],
+ v->MaxNumSwY[k],
+ v->PrefetchLinesC[i][j][k],
+ v->SwathWidthCThisState[k],
+ v->PrefillC[k],
+ v->MaxNumSwC[k],
+ v->swath_width_luma_ub_this_state[k],
+ v->swath_width_chroma_ub_this_state[k],
+ v->SwathHeightYThisState[k],
+ v->SwathHeightCThisState[k],
+ v->TWait,
+ &v->DSTXAfterScaler[k],
+ &v->DSTYAfterScaler[k],
+ &v->LineTimesForPrefetch[k],
+ &v->PrefetchBW[k],
+ &v->LinesForMetaPTE[k],
+ &v->LinesForMetaAndDPTERow[k],
+ &v->VRatioPreY[i][j][k],
+ &v->VRatioPreC[i][j][k],
+ &v->RequiredPrefetchPixelDataBWLuma[i][j][k],
+ &v->RequiredPrefetchPixelDataBWChroma[i][j][k],
+ &v->NoTimeForDynamicMetadata[i][j][k],
+ &v->Tno_bw[k],
+ &v->prefetch_vmrow_bw[k],
+ &v->dummy7[k],
+ &v->dummy8[k],
+ &v->dummy13[k],
+ &v->VUpdateOffsetPix[k],
+ &v->VUpdateWidthPix[k],
+ &v->VReadyOffsetPix[k]);
+}
+
void dml31_ModeSupportAndSystemConfigurationFull(struct display_mode_lib *mode_lib)
{
struct vba_vars_st *v = &mode_lib->vba;
@@ -5276,92 +5372,9 @@ void dml31_ModeSupportAndSystemConfigurationFull(struct display_mode_lib *mode_l
v->SREnterPlusExitTime);
for (k = 0; k < v->NumberOfActivePlanes; k++) {
- Pipe myPipe;
-
- myPipe.DPPCLK = v->RequiredDPPCLK[i][j][k];
- myPipe.DISPCLK = v->RequiredDISPCLK[i][j];
- myPipe.PixelClock = v->PixelClock[k];
- myPipe.DCFCLKDeepSleep = v->ProjectedDCFCLKDeepSleep[i][j];
- myPipe.DPPPerPlane = v->NoOfDPP[i][j][k];
- myPipe.ScalerEnabled = v->ScalerEnabled[k];
- myPipe.SourceScan = v->SourceScan[k];
- myPipe.BlockWidth256BytesY = v->Read256BlockWidthY[k];
- myPipe.BlockHeight256BytesY = v->Read256BlockHeightY[k];
- myPipe.BlockWidth256BytesC = v->Read256BlockWidthC[k];
- myPipe.BlockHeight256BytesC = v->Read256BlockHeightC[k];
- myPipe.InterlaceEnable = v->Interlace[k];
- myPipe.NumberOfCursors = v->NumberOfCursors[k];
- myPipe.VBlank = v->VTotal[k] - v->VActive[k];
- myPipe.HTotal = v->HTotal[k];
- myPipe.DCCEnable = v->DCCEnable[k];
- myPipe.ODMCombineIsEnabled = v->ODMCombineEnablePerState[i][k] == dm_odm_combine_mode_4to1
- || v->ODMCombineEnablePerState[i][k] == dm_odm_combine_mode_2to1;
- myPipe.SourcePixelFormat = v->SourcePixelFormat[k];
- myPipe.BytePerPixelY = v->BytePerPixelY[k];
- myPipe.BytePerPixelC = v->BytePerPixelC[k];
- myPipe.ProgressiveToInterlaceUnitInOPP = v->ProgressiveToInterlaceUnitInOPP;
- v->NoTimeForPrefetch[i][j][k] = CalculatePrefetchSchedule(
- mode_lib,
- HostVMInefficiencyFactor,
- &myPipe,
- v->DSCDelayPerState[i][k],
- v->DPPCLKDelaySubtotal + v->DPPCLKDelayCNVCFormater,
- v->DPPCLKDelaySCL,
- v->DPPCLKDelaySCLLBOnly,
- v->DPPCLKDelayCNVCCursor,
- v->DISPCLKDelaySubtotal,
- v->SwathWidthYThisState[k] / v->HRatio[k],
- v->OutputFormat[k],
- v->MaxInterDCNTileRepeaters,
- dml_min(v->MaxVStartup, v->MaximumVStartup[i][j][k]),
- v->MaximumVStartup[i][j][k],
- v->GPUVMMaxPageTableLevels,
- v->GPUVMEnable,
- v->HostVMEnable,
- v->HostVMMaxNonCachedPageTableLevels,
- v->HostVMMinPageSize,
- v->DynamicMetadataEnable[k],
- v->DynamicMetadataVMEnabled,
- v->DynamicMetadataLinesBeforeActiveRequired[k],
- v->DynamicMetadataTransmittedBytes[k],
- v->UrgLatency[i],
- v->ExtraLatency,
- v->TimeCalc,
- v->PDEAndMetaPTEBytesPerFrame[i][j][k],
- v->MetaRowBytes[i][j][k],
- v->DPTEBytesPerRow[i][j][k],
- v->PrefetchLinesY[i][j][k],
- v->SwathWidthYThisState[k],
- v->PrefillY[k],
- v->MaxNumSwY[k],
- v->PrefetchLinesC[i][j][k],
- v->SwathWidthCThisState[k],
- v->PrefillC[k],
- v->MaxNumSwC[k],
- v->swath_width_luma_ub_this_state[k],
- v->swath_width_chroma_ub_this_state[k],
- v->SwathHeightYThisState[k],
- v->SwathHeightCThisState[k],
- v->TWait,
- &v->DSTXAfterScaler[k],
- &v->DSTYAfterScaler[k],
- &v->LineTimesForPrefetch[k],
- &v->PrefetchBW[k],
- &v->LinesForMetaPTE[k],
- &v->LinesForMetaAndDPTERow[k],
- &v->VRatioPreY[i][j][k],
- &v->VRatioPreC[i][j][k],
- &v->RequiredPrefetchPixelDataBWLuma[i][j][k],
- &v->RequiredPrefetchPixelDataBWChroma[i][j][k],
- &v->NoTimeForDynamicMetadata[i][j][k],
- &v->Tno_bw[k],
- &v->prefetch_vmrow_bw[k],
- &v->dummy7[k],
- &v->dummy8[k],
- &v->dummy13[k],
- &v->VUpdateOffsetPix[k],
- &v->VUpdateWidthPix[k],
- &v->VReadyOffsetPix[k]);
+ CalculatePrefetchSchedulePerPlane(mode_lib,
+ HostVMInefficiencyFactor,
+ i, j, k);
}
for (k = 0; k < v->NumberOfActivePlanes; k++) {
--
2.34.1
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