It was reported that on kernel v6.2-rc1, we have the following stack size issue:
make[3]: *** [/kisskb/src/scripts/Makefile.build:504: drivers/media] Error 2 [...]/display/dc/dml/dcn31/display_mode_vba_31.c: In function 'UseMinimumDCFCLK': [...]/display/dc/dml/dcn31/display_mode_vba_31.c:7082:1: error: the frame size of 2224 bytes is larger than 2048 bytes [-Werror=frame-larger-than=] This commit moves two arrays of doubles from UseMinimumDCFCLK to UseMinimumDCFCLK_vars and makes the necessary changes to access those values from the struct. Cc: Alex Deucher <alexdeuc...@gmail.com> Cc: Aurabindo Pillai <aurabindo.pil...@amd.com> Cc: Hamza Mahfooz <hamza.mahf...@amd.com> Cc: Roman Li <roman...@amd.com> Cc: Geert Uytterhoeven <ge...@linux-m68k.org> Link: https://lore.kernel.org/all/20221227082932.798359-1-ge...@linux-m68k.org/ Reported-by: Geert Uytterhoeven <ge...@linux-m68k.org> Signed-off-by: Rodrigo Siqueira <rodrigo.sique...@amd.com> --- .../dc/dml/dcn31/display_mode_vba_31.c | 20 +++++++++---------- .../drm/amd/display/dc/dml/display_mode_vba.h | 2 ++ 2 files changed, 11 insertions(+), 11 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 00d3c57f0d98..28dcd46a28c0 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 @@ -6932,8 +6932,6 @@ static void UseMinimumDCFCLK( NormalEfficiency = v->PercentOfIdealFabricAndSDPPortBWReceivedAfterUrgLatency / 100.0; for (i = 0; i < v->soc.num_states; ++i) { for (j = 0; j <= 1; ++j) { - double PixelDCFCLKCyclesRequiredInPrefetch[DC__NUM_DPP__MAX]; - double PrefetchPixelLinesTime[DC__NUM_DPP__MAX]; double DCFCLKRequiredForPeakBandwidthPerPlane[DC__NUM_DPP__MAX]; double DynamicMetadataVMExtraLatency[DC__NUM_DPP__MAX]; double MinimumTWait; @@ -6986,13 +6984,13 @@ static void UseMinimumDCFCLK( double ExpectedPrefetchBWAcceleration; double PrefetchTime; - PixelDCFCLKCyclesRequiredInPrefetch[k] = (v->PrefetchLinesY[i][j][k] * v->swath_width_luma_ub_all_states[i][j][k] * v->BytePerPixelY[k] + v->UseMinimumDCFCLK_stack_reduction.PixelDCFCLKCyclesRequiredInPrefetch[k] = (v->PrefetchLinesY[i][j][k] * v->swath_width_luma_ub_all_states[i][j][k] * v->BytePerPixelY[k] + v->PrefetchLinesC[i][j][k] * v->swath_width_chroma_ub_all_states[i][j][k] * v->BytePerPixelC[k]) / NormalEfficiency / v->ReturnBusWidth; DCFCLKCyclesRequiredInPrefetch = 2 * ExtraLatencyCycles / NoOfDPPState[k] + v->PDEAndMetaPTEBytesPerFrame[i][j][k] / NormalEfficiency / NormalEfficiency / v->ReturnBusWidth * (v->GPUVMMaxPageTableLevels > 2 ? 1 : 0) + 2 * v->DPTEBytesPerRow[i][j][k] / NormalEfficiency / NormalEfficiency / v->ReturnBusWidth - + 2 * v->MetaRowBytes[i][j][k] / NormalEfficiency / v->ReturnBusWidth + PixelDCFCLKCyclesRequiredInPrefetch[k]; - PrefetchPixelLinesTime[k] = dml_max(v->PrefetchLinesY[i][j][k], v->PrefetchLinesC[i][j][k]) * v->HTotal[k] / v->PixelClock[k]; + + 2 * v->MetaRowBytes[i][j][k] / NormalEfficiency / v->ReturnBusWidth + v->UseMinimumDCFCLK_stack_reduction.PixelDCFCLKCyclesRequiredInPrefetch[k]; + v->UseMinimumDCFCLK_stack_reduction.PrefetchPixelLinesTime[k] = dml_max(v->PrefetchLinesY[i][j][k], v->PrefetchLinesC[i][j][k]) * v->HTotal[k] / v->PixelClock[k]; ExpectedPrefetchBWAcceleration = (v->VActivePixelBandwidth[i][j][k] + v->VActiveCursorBandwidth[i][j][k]) / (v->ReadBandwidthLuma[k] + v->ReadBandwidthChroma[k]); DynamicMetadataVMExtraLatency[k] = @@ -7006,9 +7004,9 @@ static void UseMinimumDCFCLK( if (PrefetchTime > 0) { double ExpectedVRatioPrefetch; - ExpectedVRatioPrefetch = PrefetchPixelLinesTime[k] - / (PrefetchTime * PixelDCFCLKCyclesRequiredInPrefetch[k] / DCFCLKCyclesRequiredInPrefetch); - DCFCLKRequiredForPeakBandwidthPerPlane[k] = NoOfDPPState[k] * PixelDCFCLKCyclesRequiredInPrefetch[k] / PrefetchPixelLinesTime[k] + ExpectedVRatioPrefetch = v->UseMinimumDCFCLK_stack_reduction.PrefetchPixelLinesTime[k] + / (PrefetchTime * v->UseMinimumDCFCLK_stack_reduction.PixelDCFCLKCyclesRequiredInPrefetch[k] / DCFCLKCyclesRequiredInPrefetch); + DCFCLKRequiredForPeakBandwidthPerPlane[k] = NoOfDPPState[k] * v->UseMinimumDCFCLK_stack_reduction.PixelDCFCLKCyclesRequiredInPrefetch[k] / v->UseMinimumDCFCLK_stack_reduction.PrefetchPixelLinesTime[k] * dml_max(1.0, ExpectedVRatioPrefetch) * dml_max(1.0, ExpectedVRatioPrefetch / 4) * ExpectedPrefetchBWAcceleration; if (v->HostVMEnable == true || v->ImmediateFlipRequirement[0] == dm_immediate_flip_required) { DCFCLKRequiredForPeakBandwidthPerPlane[k] = DCFCLKRequiredForPeakBandwidthPerPlane[k] @@ -7066,13 +7064,13 @@ static void UseMinimumDCFCLK( for (k = 0; k < v->NumberOfActivePlanes; ++k) { double MaximumTvmPlus2Tr0PlusTsw; MaximumTvmPlus2Tr0PlusTsw = (v->MaximumVStartup[i][j][k] - 2) * v->HTotal[k] / v->PixelClock[k] - MinimumTWait - DynamicMetadataVMExtraLatency[k]; - if (MaximumTvmPlus2Tr0PlusTsw <= MinimumTvmPlus2Tr0 + PrefetchPixelLinesTime[k] / 4) { + if (MaximumTvmPlus2Tr0PlusTsw <= MinimumTvmPlus2Tr0 + v->UseMinimumDCFCLK_stack_reduction.PrefetchPixelLinesTime[k] / 4) { DCFCLKRequiredForPeakBandwidth = v->DCFCLKPerState[i]; } else { DCFCLKRequiredForPeakBandwidth = dml_max3( DCFCLKRequiredForPeakBandwidth, - 2 * ExtraLatencyCycles / (MaximumTvmPlus2Tr0PlusTsw - MinimumTvmPlus2Tr0 - PrefetchPixelLinesTime[k] / 4), - (2 * ExtraLatencyCycles + PixelDCFCLKCyclesRequiredInPrefetch[k]) / (MaximumTvmPlus2Tr0PlusTsw - MinimumTvmPlus2Tr0)); + 2 * ExtraLatencyCycles / (MaximumTvmPlus2Tr0PlusTsw - MinimumTvmPlus2Tr0 - v->UseMinimumDCFCLK_stack_reduction.PrefetchPixelLinesTime[k] / 4), + (2 * ExtraLatencyCycles + v->UseMinimumDCFCLK_stack_reduction.PixelDCFCLKCyclesRequiredInPrefetch[k]) / (MaximumTvmPlus2Tr0PlusTsw - MinimumTvmPlus2Tr0)); } } v->DCFCLKState[i][j] = dml_min(v->DCFCLKPerState[i], 1.05 * dml_max(DCFCLKRequiredForAverageBandwidth, DCFCLKRequiredForPeakBandwidth)); diff --git a/drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.h b/drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.h index 660c22a19c8d..733947be3737 100644 --- a/drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.h +++ b/drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.h @@ -251,6 +251,8 @@ struct dml32_ModeSupportAndSystemConfigurationFull { struct UseMinimumDCFCLK_vars { double TotalMaxPrefetchFlipDPTERowBandwidth[DC__VOLTAGE_STATES][2]; + double PixelDCFCLKCyclesRequiredInPrefetch[DC__NUM_DPP__MAX]; + double PrefetchPixelLinesTime[DC__NUM_DPP__MAX]; }; struct dummy_vars { -- 2.39.0
