[edk2-devel] [PATCH v4 07/28] MdeModulePkg: Check Print Level Before Dumping GCD Memory Map

[Taylor Beebe]

When page/pool protections are active, the GCD sync process takes
quite a bit longer than normal. This behavior is primarily due to
a function which dumps the GCD memory map to the console. This
dump function runs only on DEBUG builds but will iterate through
the GCD memory map dozens of times even when the print level doesn't
include DEBUG_GCD. This patch adds a check for the DEBUG_GCD print
level before dumping the GCD memory map which saves several seconds
during boot when page/pool protections are active.

Signed-off-by: Taylor Beebe <taylor.d.be...@gmail.com>
Cc: Jian J Wang <jian.j.w...@intel.com>
Cc: Liming Gao <gaolim...@byosoft.com.cn>
Cc: Dandan Bi <dandan...@intel.com>
---
 MdeModulePkg/Core/Dxe/Gcd/Gcd.c   | 4 ++++
 MdeModulePkg/Core/Dxe/DxeMain.inf | 1 +
 2 files changed, 5 insertions(+)

diff --git a/MdeModulePkg/Core/Dxe/Gcd/Gcd.c b/MdeModulePkg/Core/Dxe/Gcd/Gcd.c
index 72bd036eab1e..392586d5b17c 100644
--- a/MdeModulePkg/Core/Dxe/Gcd/Gcd.c
+++ b/MdeModulePkg/Core/Dxe/Gcd/Gcd.c
@@ -150,6 +150,10 @@ CoreDumpGcdMemorySpaceMap (
   EFI_GCD_MEMORY_SPACE_DESCRIPTOR  *MemorySpaceMap;
   UINTN                            Index;
 
+  if ((PcdGet32 (PcdDebugPrintErrorLevel) & DEBUG_GCD) == 0) {
+    return;
+  }
+
   Status = CoreGetMemorySpaceMap (&NumberOfDescriptors, &MemorySpaceMap);
   ASSERT (Status == EFI_SUCCESS && MemorySpaceMap != NULL);
 
diff --git a/MdeModulePkg/Core/Dxe/DxeMain.inf 
b/MdeModulePkg/Core/Dxe/DxeMain.inf
index 35d5bf0dee6f..6c896a0e7f0f 100644
--- a/MdeModulePkg/Core/Dxe/DxeMain.inf
+++ b/MdeModulePkg/Core/Dxe/DxeMain.inf
@@ -187,6 +187,7 @@ [Pcd]
   gEfiMdeModulePkgTokenSpaceGuid.PcdHeapGuardPropertyMask                   ## 
CONSUMES
   gEfiMdeModulePkgTokenSpaceGuid.PcdCpuStackGuard                           ## 
CONSUMES
   gEfiMdeModulePkgTokenSpaceGuid.PcdFwVolDxeMaxEncapsulationDepth           ## 
CONSUMES
+  gEfiMdePkgTokenSpaceGuid.PcdDebugPrintErrorLevel                          ## 
CONSUMES
 
 # [Hob]
 # RESOURCE_DESCRIPTOR   ## CONSUMES
-- 
2.42.0.windows.2



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