[PATCH 4/5] ntdll: GetLogicalProcessorInformationEx report LTP_PC_SMT for SMT cores.

[Roderick Colenbrander]

Signed-off-by: Roderick Colenbrander <thunderbird2k at gmail.com>
---
 dlls/ntdll/nt.c | 27 +++++++++++++++------------
 include/winnt.h |  2 ++
 2 files changed, 17 insertions(+), 12 deletions(-)

diff --git a/dlls/ntdll/nt.c b/dlls/ntdll/nt.c
index b16f320957..5712e4cc1b 100644
--- a/dlls/ntdll/nt.c
+++ b/dlls/ntdll/nt.c
@@ -1309,6 +1309,17 @@ static DWORD log_proc_ex_size_plus(DWORD size)
     return sizeof(LOGICAL_PROCESSOR_RELATIONSHIP) + sizeof(DWORD) + size;
 }
 
+static DWORD count_bits(ULONG_PTR mask)
+{
+    DWORD count = 0;
+    while (mask > 0)
+    {
+        mask >>= 1;
+        count++;
+    }
+    return count;
+}
+
 /* Store package and core information for a logical processor. Parsing of processor
  * data may happen in multiple passes; the 'id' parameter is then used to locate
  * previously stored data. The type of data stored in 'id' depends on 'rel':
@@ -1377,7 +1388,10 @@ static inline BOOL logical_proc_info_add_by_id(SYSTEM_LOGICAL_PROCESSOR_INFORMAT
 
         dataex->Relationship = rel;
         dataex->Size = log_proc_ex_size_plus(sizeof(PROCESSOR_RELATIONSHIP));
-        dataex->u.Processor.Flags = 0; /* TODO */
+        if (rel == RelationProcessorCore)
+            dataex->u.Processor.Flags = count_bits(mask) > 1 ? LTP_PC_SMT : 0;
+        else
+            dataex->u.Processor.Flags = 0;
         dataex->u.Processor.EfficiencyClass = 0;
         dataex->u.Processor.GroupCount = 1;
         dataex->u.Processor.GroupMask[0].Mask = mask;
@@ -1520,17 +1534,6 @@ static inline BOOL logical_proc_info_add_group(SYSTEM_LOGICAL_PROCESSOR_INFORMAT
 }
 
 #ifdef linux
-static DWORD count_bits(ULONG_PTR mask)
-{
-    DWORD count = 0;
-    while (mask > 0)
-    {
-        mask >>= 1;
-        count++;
-    }
-    return count;
-}
-
 /* for 'data', max_len is the array count. for 'dataex', max_len is in bytes */
 static NTSTATUS create_logical_proc_info(SYSTEM_LOGICAL_PROCESSOR_INFORMATION **data,
         SYSTEM_LOGICAL_PROCESSOR_INFORMATION_EX **dataex, DWORD *max_len)
diff --git a/include/winnt.h b/include/winnt.h
index 54bf11dabd..862cc45291 100644
--- a/include/winnt.h
+++ b/include/winnt.h
@@ -5982,6 +5982,8 @@ typedef enum _LOGICAL_PROCESSOR_RELATIONSHIP
     RelationAll              = 0xffff
 } LOGICAL_PROCESSOR_RELATIONSHIP;
 
+#define LTP_PC_SMT 0x1
+
 typedef enum _PROCESSOR_CACHE_TYPE
 {
     CacheUnified,
-- 
2.14.4