From 5f9569d3c5813e033f9ece8ad69065963fcec511 Mon Sep 17 00:00:00 2001
From: Sir Richard <sir_richard@svn.reactos.org>
Date: Tue, 2 Nov 2010 15:05:37 +0000
Subject: [PATCH] [NTOS]: Define an array of MI_USAGE integers to track what a
 PFN is used for. [NTOS]: Extend the MMPFN structure for ReactOS-specific PFN
 tracing mechanism. [NTOS]: Add macros to track page usage and
 process/extra-data (not yet used).

svn path=/trunk/; revision=49443
---
 reactos/ntoskrnl/include/internal/mm.h | 41 ++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)

diff --git a/reactos/ntoskrnl/include/internal/mm.h b/reactos/ntoskrnl/include/internal/mm.h
index e664d1c99c3..7499571f550 100644
--- a/reactos/ntoskrnl/include/internal/mm.h
+++ b/reactos/ntoskrnl/include/internal/mm.h
@@ -295,6 +295,43 @@ typedef struct _MM_RMAP_ENTRY
 }
 MM_RMAP_ENTRY, *PMM_RMAP_ENTRY;
 
+#if MI_TRACE_PFNS
+extern ULONG MI_PFN_CURRENT_USAGE;
+extern CHAR MI_PFN_CURRENT_PROCESS_NAME[16];
+#define MI_SET_USAGE(x)     MI_PFN_CURRENT_USAGE = x
+#define MI_SET_PROCESS2(x)  memcpy(MI_PFN_CURRENT_PROCESS_NAME, x, 16)
+#else
+#define MI_SET_USAGE(x)
+#define MI_SET_PROCESS2(x)
+#endif
+
+typedef enum _MI_PFN_USAGES
+{
+    MI_USAGE_NOT_SET = 0,
+    MI_USAGE_PAGED_POOL,
+    MI_USAGE_NONPAGED_POOL,
+    MI_USAGE_NONPAGED_POOL_EXPANSION,
+    MI_USAGE_KERNEL_STACK,
+    MI_USAGE_KERNEL_STACK_EXPANSION,
+    MI_USAGE_SYSTEM_PTE,
+    MI_USAGE_VAD,
+    MI_USAGE_PEB_TEB,
+    MI_USAGE_SECTION,
+    MI_USAGE_PAGE_TABLE,
+    MI_USAGE_PAGE_DIRECTORY,
+    MI_USAGE_LEGACY_PAGE_DIRECTORY,
+    MI_USAGE_DRIVER_PAGE,
+    MI_USAGE_CONTINOUS_ALLOCATION,
+    MI_USAGE_MDL,
+    MI_USAGE_DEMAND_ZERO,
+    MI_USAGE_ZERO_LOOP,
+    MI_USAGE_CACHE,
+    MI_USAGE_PFN_DATABASE,
+    MI_USAGE_BOOT_DRIVER,
+    MI_USAGE_INIT_MEMORY,
+    MI_USAGE_FREE_PAGE
+} MI_PFN_USAGES;
+
 //
 // These two mappings are actually used by Windows itself, based on the ASSERTS
 //
@@ -362,6 +399,10 @@ typedef struct _MMPFN
             ULONG_PTR MustBeCached:1;
         };
     } u4;
+#if MI_TRACE_PFNS
+    MI_PFN_USAGES PfnUsage;
+    CHAR ProcessName[16];
+#endif
 } MMPFN, *PMMPFN;
 
 extern PMMPFN MmPfnDatabase;