LoongArch: Add other common headers

Add some other common headers for basic LoongArch support.

Reviewed-by: WANG Xuerui <git@xen0n.name>
Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

1 files changed, 33 insertions, 0 deletions

diff --git a/arch/loongarch/include/asm/timex.h b/arch/loongarch/include/asm/timex.h
new file mode 100644
index 000000000000..d3ed99a4fdbd
--- /dev/null
+++ b/arch/loongarch/include/asm/timex.h
@@ -0,0 +1,33 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2020-2022 Loongson Technology Corporation Limited
+ */
+#ifndef _ASM_TIMEX_H
+#define _ASM_TIMEX_H
+
+#ifdef __KERNEL__
+
+#include <linux/compiler.h>
+
+#include <asm/cpu.h>
+#include <asm/cpu-features.h>
+
+/*
+ * Standard way to access the cycle counter.
+ * Currently only used on SMP for scheduling.
+ *
+ * We know that all SMP capable CPUs have cycle counters.
+ */
+
+typedef unsigned long cycles_t;
+
+#define get_cycles get_cycles
+
+static inline cycles_t get_cycles(void)
+{
+	return drdtime();
+}
+
+#endif /* __KERNEL__ */
+
+#endif /*  _ASM_TIMEX_H */