--- xnu/xnu-792/iokit/Kernel/IOKitDebug.cpp
+++ xnu/xnu-517.12.7/iokit/Kernel/IOKitDebug.cpp
@@ -26,8 +26,6 @@
  *
  */
 
-#include <sys/sysctl.h>
-
 #include <IOKit/IOKitDebug.h>
 #include <IOKit/IOLib.h>
 #include <IOKit/assert.h>
@@ -37,24 +35,18 @@
 #include <libkern/c++/OSContainers.h>
 #include <libkern/c++/OSCPPDebug.h>
 
+extern "C" {
+
+SInt64		gIOKitDebug
 #ifdef IOKITDEBUG
-#define DEBUG_INIT_VALUE IOKITDEBUG
-#else
-#define DEBUG_INIT_VALUE 0
+                            = IOKITDEBUG
 #endif
-
-SInt64		gIOKitDebug = DEBUG_INIT_VALUE;
-SYSCTL_QUAD(_debug, OID_AUTO, iokit, CTLFLAG_RW, &gIOKitDebug, "boot_arg io");
-
+;
 
 int 		debug_malloc_size;
 int		debug_iomalloc_size;
-vm_size_t	debug_iomallocpageable_size;
 int 		debug_container_malloc_size;
 // int 		debug_ivars_size; // in OSObject.cpp
-
-extern "C" {
-
 
 void IOPrintPlane( const IORegistryPlane * plane )
 {
@@ -210,7 +202,6 @@
     updateOffset( dict, debug_ivars_size, "Instance allocation" );
     updateOffset( dict, debug_container_malloc_size, "Container allocation" );
     updateOffset( dict, debug_iomalloc_size, "IOMalloc allocation" );
-    updateOffset( dict, debug_iomallocpageable_size, "Pageable allocation" );
 
     OSMetaClass::serializeClassDictionary(dict);