[Patch 2/2] UefiCpuPkg/PiSmmCpuDxeSmm: Default avoid print.

["Dong, Eric" <eric.dong@intel.com>]

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1984

Current debug message brings much restriction for the platform
which use this driver.
For PEI and DXE phase, platform mush link base DebugLib (without
using any pei/dxe services, even for its dependent libraries).

This patch default disable this debug message, only open it when
need to debug the related code.

Signed-off-by: Eric Dong <eric.dong@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
---
 UefiCpuPkg/PiSmmCpuDxeSmm/CpuS3.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/CpuS3.c b/UefiCpuPkg/PiSmmCpuDxeSmm/CpuS3.c
index 2cfc61b2c6..b8cbc3a9d1 100644
--- a/UefiCpuPkg/PiSmmCpuDxeSmm/CpuS3.c
+++ b/UefiCpuPkg/PiSmmCpuDxeSmm/CpuS3.c
@@ -1,7 +1,7 @@
 /** @file
 Code for Processor S3 restoration
 
-Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2006 - 2019, Intel Corporation. All rights reserved.<BR>
 SPDX-License-Identifier: BSD-2-Clause-Patent
 
 **/
@@ -90,7 +90,9 @@ UINT8                        mApHltLoopCodeTemplate[] = {
                                0xEB, 0xFC               // jmp $-2
                                };
 
+GLOBAL_REMOVE_IF_UNREFERENCED
 CHAR16 *mRegisterTypeStr[] = {L"MSR", L"CR", L"MMIO", L"CACHE", L"SEMAP", L"INVALID" };
+#define DEBUG_AP_MSG         0
 
 /**
   Sync up the MTRR values for all processors.
@@ -209,7 +211,7 @@ ProgramProcessorRegister (
               ApLocation->Core * CpuStatus->MaxThreadCount +
               ApLocation->Thread;
         DEBUG ((
-          DEBUG_INFO,
+          DEBUG_AP_MSG,
           "Processor = %lu, Entry Index %lu, Type = %s!\n",
           (UINT64)ThreadIndex,
           (UINT64)Index,
-- 
2.21.0.windows.1