01/03: [NTOSKRNL] Add the CcPinReadWait and CcPinReadNoWait counters

[Pierre Schweitzer]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=0fbdf317092603d594baf…

commit 0fbdf317092603d594bafacfd6da71fffe2bd219
Author:     Pierre Schweitzer <pierre(a)reactos.org>
AuthorDate: Sat Feb 24 13:47:15 2018 +0100
Commit:     Pierre Schweitzer <pierre(a)reactos.org>
CommitDate: Sat Feb 24 14:52:04 2018 +0100

    [NTOSKRNL] Add the CcPinReadWait and CcPinReadNoWait counters
---
 ntoskrnl/cc/pin.c              | 13 +++++++++++++
 ntoskrnl/ex/sysinfo.c          |  4 ++--
 ntoskrnl/include/internal/cc.h |  2 ++
 3 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/ntoskrnl/cc/pin.c b/ntoskrnl/cc/pin.c
index 07afd1847f..20b409662f 100644
--- a/ntoskrnl/cc/pin.c
+++ b/ntoskrnl/cc/pin.c
@@ -21,9 +21,13 @@ extern NPAGED_LOOKASIDE_LIST iBcbLookasideList;
 /* Counters:
  * - Number of calls to CcMapData that could wait
  * - Number of calls to CcMapData that couldn't wait
+ * - Number of calls to CcPinRead that could wait
+ * - Number of calls to CcPinRead that couldn't wait
  */
 ULONG CcMapDataWait = 0;
 ULONG CcMapDataNoWait = 0;
+ULONG CcPinReadWait = 0;
+ULONG CcPinReadNoWait = 0;
 
 /* FUNCTIONS *****************************************************************/
 
@@ -192,6 +196,15 @@ CcPinRead (
     CCTRACE(CC_API_DEBUG, "FileOffset=%p FileOffset=%p Length=%lu
Flags=0x%lx\n",
         FileObject, FileOffset, Length, Flags);
 
+    if (Flags & PIN_WAIT)
+    {
+        ++CcPinReadWait;
+    }
+    else
+    {
+        ++CcPinReadNoWait;
+    }
+
     if (CcMapData(FileObject, FileOffset, Length, Flags, Bcb, Buffer))
     {
         if (CcPinMappedData(FileObject, FileOffset, Length, Flags, Bcb))
diff --git a/ntoskrnl/ex/sysinfo.c b/ntoskrnl/ex/sysinfo.c
index 59c6d263c2..4db50e5b0b 100644
--- a/ntoskrnl/ex/sysinfo.c
+++ b/ntoskrnl/ex/sysinfo.c
@@ -693,8 +693,8 @@ QSI_DEF(SystemPerformanceInformation)
     Spi->CcMapDataWaitMiss = 0; /* FIXME */
 
     Spi->CcPinMappedDataCount = 0; /* FIXME */
-    Spi->CcPinReadNoWait = 0; /* FIXME */
-    Spi->CcPinReadWait = 0; /* FIXME */
+    Spi->CcPinReadNoWait = CcPinReadNoWait;
+    Spi->CcPinReadWait = CcPinReadWait;
     Spi->CcPinReadNoWaitMiss = 0; /* FIXME */
     Spi->CcPinReadWaitMiss = 0; /* FIXME */
     Spi->CcCopyReadNoWait = 0; /* FIXME */
diff --git a/ntoskrnl/include/internal/cc.h b/ntoskrnl/include/internal/cc.h
index c404cd9179..32caa551b2 100644
--- a/ntoskrnl/include/internal/cc.h
+++ b/ntoskrnl/include/internal/cc.h
@@ -60,6 +60,8 @@ extern ULONG CcLazyWritePages;
 extern ULONG CcLazyWriteIos;
 extern ULONG CcMapDataWait;
 extern ULONG CcMapDataNoWait;
+extern ULONG CcPinReadWait;
+extern ULONG CcPinReadNoWait;
 
 typedef struct _PF_SCENARIO_ID
 {