v4.19.13 snapshot.
diff --git a/arch/powerpc/include/asm/timex.h b/arch/powerpc/include/asm/timex.h
new file mode 100644
index 0000000..926b9f9
--- /dev/null
+++ b/arch/powerpc/include/asm/timex.h
@@ -0,0 +1,55 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _ASM_POWERPC_TIMEX_H
+#define _ASM_POWERPC_TIMEX_H
+
+#ifdef __KERNEL__
+
+/*
+ * PowerPC architecture timex specifications
+ */
+
+#include <asm/cputable.h>
+#include <asm/reg.h>
+
+#define CLOCK_TICK_RATE 1024000 /* Underlying HZ */
+
+typedef unsigned long cycles_t;
+
+static inline cycles_t get_cycles(void)
+{
+#ifdef __powerpc64__
+ return mftb();
+#else
+ cycles_t ret;
+
+ /*
+ * For the "cycle" counter we use the timebase lower half.
+ * Currently only used on SMP.
+ */
+
+ ret = 0;
+
+ __asm__ __volatile__(
+#ifdef CONFIG_PPC_8xx
+ "97: mftb %0\n"
+#else
+ "97: mfspr %0, %2\n"
+#endif
+ "99:\n"
+ ".section __ftr_fixup,\"a\"\n"
+ ".align 2\n"
+ "98:\n"
+ " .long %1\n"
+ " .long 0\n"
+ " .long 97b-98b\n"
+ " .long 99b-98b\n"
+ " .long 0\n"
+ " .long 0\n"
+ ".previous"
+ : "=r" (ret) : "i" (CPU_FTR_601), "i" (SPRN_TBRL));
+ return ret;
+#endif
+}
+
+#endif /* __KERNEL__ */
+#endif /* _ASM_POWERPC_TIMEX_H */