1 files changed, 47 insertions, 0 deletions
diff --git a/arch/s390/include/asm/vdso/gettimeofday.h b/arch/s390/include/asm/vdso/gettimeofday.h
new file mode 100644
index 000000000000..fb4564308e9d
--- /dev/null
+++ b/arch/s390/include/asm/vdso/gettimeofday.h
@@ -0,0 +1,47 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef ASM_VDSO_GETTIMEOFDAY_H
+#define ASM_VDSO_GETTIMEOFDAY_H
+
+#define VDSO_HAS_TIME 1
+
+#define VDSO_HAS_CLOCK_GETRES 1
+
+#define VDSO_DELTA_NOMASK 1
+
+#include <asm/syscall.h>
+#include <asm/timex.h>
+#include <asm/unistd.h>
+#include <linux/compiler.h>
+
+
+static inline u64 __arch_get_hw_counter(s32 clock_mode, const struct vdso_time_data *vd)
+{
+	u64 adj, now;
+
+	now = get_tod_clock();
+	adj = vd->arch_data.tod_steering_end - now;
+	if (unlikely((s64) adj > 0))
+		now += (vd->arch_data.tod_steering_delta < 0) ? (adj >> 15) : -(adj >> 15);
+	return now;
+}
+
+static __always_inline
+long clock_gettime_fallback(clockid_t clkid, struct __kernel_timespec *ts)
+{
+	return syscall2(__NR_clock_gettime, (long)clkid, (long)ts);
+}
+
+static __always_inline
+long gettimeofday_fallback(register struct __kernel_old_timeval *tv,
+			   register struct timezone *tz)
+{
+	return syscall2(__NR_gettimeofday, (long)tv, (long)tz);
+}
+
+static __always_inline
+long clock_getres_fallback(clockid_t clkid, struct __kernel_timespec *ts)
+{
+	return syscall2(__NR_clock_getres, (long)clkid, (long)ts);
+}
+
+#endif