1 files changed, 31 insertions, 0 deletions

diff --git a/include/asm-x86/timex_64.h b/include/asm-x86/timex_64.h
new file mode 100644
index 000000000000..6ed21f44d308
--- /dev/null
+++ b/include/asm-x86/timex_64.h
@@ -0,0 +1,31 @@
+/*
+ * linux/include/asm-x86_64/timex.h
+ *
+ * x86-64 architecture timex specifications
+ */
+#ifndef _ASMx8664_TIMEX_H
+#define _ASMx8664_TIMEX_H
+
+#include <asm/8253pit.h>
+#include <asm/msr.h>
+#include <asm/vsyscall.h>
+#include <asm/system.h>
+#include <asm/processor.h>
+#include <asm/tsc.h>
+#include <linux/compiler.h>
+
+#define CLOCK_TICK_RATE PIT_TICK_RATE   /* Underlying HZ */
+
+extern int read_current_timer(unsigned long *timer_value);
+#define ARCH_HAS_READ_CURRENT_TIMER     1
+
+#define USEC_PER_TICK (USEC_PER_SEC / HZ)
+#define NSEC_PER_TICK (NSEC_PER_SEC / HZ)
+#define FSEC_PER_TICK (FSEC_PER_SEC / HZ)
+
+#define NS_SCALE        10 /* 2^10, carefully chosen */
+#define US_SCALE        32 /* 2^32, arbitralrily chosen */
+
+extern void mark_tsc_unstable(char *msg);
+extern void set_cyc2ns_scale(unsigned long khz);
+#endif