From 4d974e56eeabc0fe74a7d74785c1bf505e8ea3f7 Mon Sep 17 00:00:00 2001
From: Pierre Schweitzer <pierre@reactos.org>
Date: Sun, 9 Dec 2018 18:25:11 +0100
Subject: [PATCH] [NTOSKRNL] Return the amount of hits in system lookaside
 lists in ExQueryPoolUsage()

---
 ntoskrnl/mm/ARM3/expool.c | 26 +++++++++++++++++++++++---
 1 file changed, 23 insertions(+), 3 deletions(-)

diff --git a/ntoskrnl/mm/ARM3/expool.c b/ntoskrnl/mm/ARM3/expool.c
index de75cfbd25a..0828126d878 100644
--- a/ntoskrnl/mm/ARM3/expool.c
+++ b/ntoskrnl/mm/ARM3/expool.c
@@ -1669,10 +1669,30 @@ ExQueryPoolUsage(OUT PULONG PagedPoolPages,
 #endif
 
     //
-    // FIXME: Not yet supported
+    // Get the amount of hits in the system lookaside lists
     //
-    *NonPagedPoolLookasideHits += 0;
-    *PagedPoolLookasideHits += 0;
+    if (!IsListEmpty(&ExPoolLookasideListHead))
+    {
+        PLIST_ENTRY ListEntry;
+
+        for (ListEntry = ExPoolLookasideListHead.Flink;
+             ListEntry != &ExPoolLookasideListHead;
+             ListEntry = ListEntry->Flink)
+        {
+            PGENERAL_LOOKASIDE Lookaside;
+
+            Lookaside = CONTAINING_RECORD(ListEntry, GENERAL_LOOKASIDE, ListEntry);
+
+            if (Lookaside->Type == NonPagedPool)
+            {
+                *NonPagedPoolLookasideHits += Lookaside->AllocateHits;
+            }
+            else
+            {
+                *PagedPoolLookasideHits += Lookaside->AllocateHits;
+            }
+        }
+    }
 }
 
 VOID