1 files changed, 49 insertions, 0 deletions
diff --git a/libgomp/config/linux/x86/spincount.h b/libgomp/config/linux/x86/spincount.h
new file mode 100644
index 0000000..9d2624f
--- /dev/null
+++ b/libgomp/config/linux/x86/spincount.h
@@ -0,0 +1,49 @@
+/* Copyright (C) 2023-2023 Free Software Foundation, Inc.
+   Contributed by Jun Zhang <jun.zhang@intel.com>.
+
+   This file is part of the GNU Offloading and Multi Processing Library
+   (libgomp).
+
+   Libgomp is free software; you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   Libgomp is distributed in the hope that it will be useful, but WITHOUT ANY
+   WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+   FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+   more details.
+
+   Under Section 7 of GPL version 3, you are granted additional
+   permissions described in the GCC Runtime Library Exception, version
+   3.1, as published by the Free Software Foundation.
+
+   You should have received a copy of the GNU General Public License and
+   a copy of the GCC Runtime Library Exception along with this program;
+   see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef GOMP_SPINCOUNT_H
+#define GOMP_SPINCOUNT_H 1
+
+#ifdef __x86_64__
+#include "cpuid.h"
+#include "libgomp.h"
+
+/* Only for x86 hybrid platform  */
+static inline void do_adjust_default_spincount (void)
+{
+  unsigned int eax, ebx, ecx, edx;
+  if (__get_cpuid_count (7, 0, &eax, &ebx, &ecx, &edx)
+      /* CPUID.07H.0H:EDX[15] Hybrid.  */
+      && ((edx >> 15) & 1))
+    gomp_spin_count_var = 1LL;
+}
+#else
+
+static inline void do_adjust_default_spincount (void)
+{
+}
+#endif
+
+#endif /* GOMP_SPINCOUNT_H */