Fix /proc/cpuinfo topology and cache size info

* autoload.cc (GetLogicalProcessorInformationEx): Import.
        (SetThreadGroupAffinity): Import.
        * fhandler_proc.cc (add_size): New macro.
        (get_msb): New inline function.
        (mask_bits): Ditto.
        (format_proc_cpuinfo): Drop handling of old CPUs.  Check if we're
        running on a OS version supporting porcessor groups.  If so, use
        SetThreadGroupAffinity to set thread affinity.  Improve cache info
        to include 3rd level cache on Intel CPUs.  Improve multi core info.
        * wincap.h (wincaps::has_processor_groups): New element.
        * wincap.cc: Implement above element throughout.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>

winsup/cygwin/ChangeLog

@@ -1,3 +1,17 @@
+2015-08-13  Corinna Vinschen  <corinna@vinschen.de>
+
+	* autoload.cc (GetLogicalProcessorInformationEx): Import.
+	(SetThreadGroupAffinity): Import.
+	* fhandler_proc.cc (add_size): New macro.
+	(get_msb): New inline function.
+	(mask_bits): Ditto.
+	(format_proc_cpuinfo): Drop handling of old CPUs.  Check if we're
+	running on a OS version supporting porcessor groups.  If so, use
+	SetThreadGroupAffinity to set thread affinity.  Improve cache info
+	to include 3rd level cache on Intel CPUs.  Improve multi core info.
+	* wincap.h (wincaps::has_processor_groups): New element.
+	* wincap.cc: Implement above element throughout.
+
 2015-08-10  Corinna Vinschen  <corinna@vinschen.de>
 
 	*  miscfuncs.cc: Fix comment preceeding x86_64 memset and friends.

winsup/cygwin/autoload.cc

@@ -576,11 +576,13 @@ LoadDLLfunc (GetUdpTable, 12, iphlpapi)
 
 LoadDLLfuncEx (CancelSynchronousIo, 4, kernel32, 1)
 LoadDLLfunc (CreateSymbolicLinkW, 12, kernel32)
+LoadDLLfuncEx (GetLogicalProcessorInformationEx, 12, kernel32, 1)
 LoadDLLfuncEx (GetNamedPipeClientProcessId, 8, kernel32, 1)
 LoadDLLfunc (GetSystemTimePreciseAsFileTime, 4, kernel32)
 LoadDLLfuncEx (IdnToAscii, 20, kernel32, 1)
 LoadDLLfuncEx (IdnToUnicode, 20, kernel32, 1)
 LoadDLLfunc (LocaleNameToLCID, 8, kernel32)
+LoadDLLfunc (SetThreadGroupAffinity, 12, kernel32)
 LoadDLLfunc (SetThreadStackGuarantee, 4, kernel32)
 
 /* ldap functions are cdecl! */

winsup/cygwin/release/2.2.1

@@ -5,11 +5,13 @@ What's new:
 What changed:
 -------------
 
-- Revert the following patch from 2.2.0:
-  When started from a non-Cygwin process, check if $HOME starts with a
-  slash (absolute POSIX path).  Otherwise ignore it.
-
 
 Bug Fixes
 ---------
 
+- Revert the following patch from 2.2.0:
+  When started from a non-Cygwin process, check if $HOME starts with a
+  slash (absolute POSIX path).  Otherwise ignore it.
+
+- Fix output of /proc/cpuinfo in terms of cpu topology and cache size for
+  modern CPUs and modern Windows OSes supporting more than 64 logical CPUs.

winsup/cygwin/wincap.cc

@@ -49,6 +49,7 @@ wincaps wincap_xpsp2 __attribute__((section (".cygwin_dll_common"), shared)) = {
   has_microsoft_accounts:false,
   has_set_thread_stack_guarantee:false,
   has_broken_rtl_query_process_debug_information:false,
+  has_processor_groups:false,
 };
 
 wincaps wincap_2003 __attribute__((section (".cygwin_dll_common"), shared)) = {
@@ -80,6 +81,7 @@ wincaps wincap_2003 __attribute__((section (".cygwin_dll_common"), shared)) = {
   has_microsoft_accounts:false,
   has_set_thread_stack_guarantee:true,
   has_broken_rtl_query_process_debug_information:true,
+  has_processor_groups:false,
 };
 
 wincaps wincap_vista __attribute__((section (".cygwin_dll_common"), shared)) = {
@@ -111,6 +113,7 @@ wincaps wincap_vista __attribute__((section (".cygwin_dll_common"), shared)) = {
   has_microsoft_accounts:false,
   has_set_thread_stack_guarantee:true,
   has_broken_rtl_query_process_debug_information:false,
+  has_processor_groups:false,
 };
 
 wincaps wincap_7 __attribute__((section (".cygwin_dll_common"), shared)) = {
@@ -142,6 +145,7 @@ wincaps wincap_7 __attribute__((section (".cygwin_dll_common"), shared)) = {
   has_microsoft_accounts:false,
   has_set_thread_stack_guarantee:true,
   has_broken_rtl_query_process_debug_information:false,
+  has_processor_groups:true,
 };
 
 wincaps wincap_8 __attribute__((section (".cygwin_dll_common"), shared)) = {
@@ -173,6 +177,7 @@ wincaps wincap_8 __attribute__((section (".cygwin_dll_common"), shared)) = {
   has_microsoft_accounts:true,
   has_set_thread_stack_guarantee:true,
   has_broken_rtl_query_process_debug_information:false,
+  has_processor_groups:true,
 };
 
 wincaps wincap_10 __attribute__((section (".cygwin_dll_common"), shared)) = {
@@ -204,6 +209,7 @@ wincaps wincap_10 __attribute__((section (".cygwin_dll_common"), shared)) = {
   has_microsoft_accounts:true,
   has_set_thread_stack_guarantee:true,
   has_broken_rtl_query_process_debug_information:false,
+  has_processor_groups:true,
 };
 
 wincapc wincap __attribute__((section (".cygwin_dll_common"), shared));

winsup/cygwin/wincap.h

@@ -42,6 +42,7 @@ struct wincaps
   unsigned has_microsoft_accounts			: 1;
   unsigned has_set_thread_stack_guarantee		: 1;
   unsigned has_broken_rtl_query_process_debug_information : 1;
+  unsigned has_processor_groups				: 1;
 };
 
 class wincapc
@@ -98,6 +99,7 @@ public:
   bool	IMPLEMENT (has_microsoft_accounts)
   bool	IMPLEMENT (has_set_thread_stack_guarantee)
   bool	IMPLEMENT (has_broken_rtl_query_process_debug_information)
+  bool	IMPLEMENT (has_processor_groups)
 
 #undef IMPLEMENT
 };