diff --git a/arch/arm/include/asm/vdso_datapage.h b/arch/arm/include/asm/vdso_datapage.h
index 9be259442fca..d57c296f7f52 100644
--- a/arch/arm/include/asm/vdso_datapage.h
+++ b/arch/arm/include/asm/vdso_datapage.h
@@ -29,8 +29,8 @@
  * 32 bytes.
  */
 struct vdso_data {
-	u32 seq_count;		/* sequence count - odd during updates */
-	u16 tk_is_cntvct;	/* fall back to syscall if false */
+	u32 tb_seq_count;	/* sequence count - odd during updates */
+	u16 use_syscall;	/* fall back to syscall if true */
 	u16 cs_shift;		/* clocksource shift */
 	u32 xtime_coarse_sec;	/* coarse time */
 	u32 xtime_coarse_nsec;
@@ -38,7 +38,7 @@ struct vdso_data {
 	u32 wtm_clock_sec;	/* wall to monotonic offset */
 	u32 wtm_clock_nsec;
 	u32 xtime_clock_sec;	/* CLOCK_REALTIME - seconds */
-	u32 cs_mult;		/* clocksource multiplier */
+	u32 cs_mono_mult;	/* clocksource multiplier */
 
 	u64 cs_cycle_last;	/* last cycle value */
 	u64 cs_mask;		/* clocksource mask */
@@ -46,6 +46,10 @@ struct vdso_data {
 	u64 xtime_clock_snsec;	/* CLOCK_REALTIME sub-ns base */
 	u32 tz_minuteswest;	/* timezone info for gettimeofday(2) */
 	u32 tz_dsttime;
+
+	u32 cs_raw_mult;	/* Raw clocksource multipler */
+	u32 raw_time_sec;	/* Raw time */
+	u32 raw_time_nsec;
 };
 
 union vdso_data_store {
diff --git a/arch/arm/kernel/vdso.c b/arch/arm/kernel/vdso.c
index a4d6dc0f2427..74bede343ffc 100644
--- a/arch/arm/kernel/vdso.c
+++ b/arch/arm/kernel/vdso.c
@@ -189,6 +189,7 @@ static void __init patch_vdso(void *ehdr)
 	if (!cntvct_ok) {
 		vdso_nullpatch_one(&einfo, "__vdso_gettimeofday");
 		vdso_nullpatch_one(&einfo, "__vdso_clock_gettime");
+		vdso_nullpatch_one(&einfo, "__vdso_clock_getres");
 	}
 }
 
@@ -274,14 +275,14 @@ void arm_install_vdso(struct mm_struct *mm, unsigned long addr)
 
 static void vdso_write_begin(struct vdso_data *vdata)
 {
-	++vdso_data->seq_count;
+	++vdso_data->tb_seq_count;
 	smp_wmb(); /* Pairs with smp_rmb in vdso_read_retry */
 }
 
 static void vdso_write_end(struct vdso_data *vdata)
 {
 	smp_wmb(); /* Pairs with smp_rmb in vdso_read_begin */
-	++vdso_data->seq_count;
+	++vdso_data->tb_seq_count;
 }
 
 static bool tk_is_cntvct(const struct timekeeper *tk)
@@ -305,10 +306,10 @@ static bool tk_is_cntvct(const struct timekeeper *tk)
  * counter again, making it even, indicating to userspace that the
  * update is finished.
  *
- * Userspace is expected to sample seq_count before reading any other
- * fields from the data page.  If seq_count is odd, userspace is
+ * Userspace is expected to sample tb_seq_count before reading any other
+ * fields from the data page.  If tb_seq_count is odd, userspace is
  * expected to wait until it becomes even.  After copying data from
- * the page, userspace must sample seq_count again; if it has changed
+ * the page, userspace must sample tb_seq_count again; if it has changed
  * from its previous value, userspace must retry the whole sequence.
  *
  * Calls to update_vsyscall are serialized by the timekeeping core.
@@ -326,7 +327,7 @@ void update_vsyscall(struct timekeeper *tk)
 
 	vdso_write_begin(vdso_data);
 
-	vdso_data->tk_is_cntvct			= tk_is_cntvct(tk);
+	vdso_data->use_syscall			= !tk_is_cntvct(tk);
 	vdso_data->xtime_coarse_sec		= tk->xtime_sec;
 	vdso_data->xtime_coarse_nsec		= (u32)(tk->tkr_mono.xtime_nsec >>
 							tk->tkr_mono.shift);
@@ -335,9 +336,15 @@ void update_vsyscall(struct timekeeper *tk)
 
 	if (vdso_data->tk_is_cntvct) {
 		vdso_data->cs_cycle_last	= tk->tkr_mono.cycle_last;
+		vdso_data->raw_clock_sec	= tk->raw_time.tv_sec;
+		vdso_data->raw_clock_nsec	= (tk->raw_time.tv_nsec <<
+						   tk->raw_time.shift) +
+						  tk->tkr_raw.xtime_nsec;
 		vdso_data->xtime_clock_sec	= tk->xtime_sec;
 		vdso_data->xtime_clock_snsec	= tk->tkr_mono.xtime_nsec;
-		vdso_data->cs_mult		= tk->tkr_mono.mult;
+		vdso_data->cs_mono_mult		= tk->tkr_mono.mult;
+		vdso_data->cs_raw_mult		= tk->tkr_raw.mult;
+		/* tkr_mono.shift == tkr_raw.shift */
 		vdso_data->cs_shift		= tk->tkr_mono.shift;
 		vdso_data->cs_mask		= tk->tkr_mono.mask;
 	}
diff --git a/arch/arm/vdso/compiler.h b/arch/arm/vdso/compiler.h
new file mode 100644
index 000000000000..ef1d664fb4fa
--- /dev/null
+++ b/arch/arm/vdso/compiler.h
@@ -0,0 +1,69 @@
+/*
+ * Userspace implementations of fallback calls
+ *
+ * Copyright (C) 2017 Cavium, Inc.
+ * Copyright (C) 2012 ARM Limited
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Author: Will Deacon <will.deacon@arm.com>
+ * Rewriten into C by: Andrew Pinski <apinski@cavium.com>
+ */
+
+#ifndef __VDSO_COMPILER_H
+#define __VDSO_COMPILER_H
+
+#include <asm/arch_timer.h>
+#include <asm/processor.h>
+#include <asm/unistd.h>
+#include <linux/compiler.h>
+
+#ifndef CONFIG_AEABI
+#error This code depends on AEABI system call conventions
+#endif
+
+#define DEFINE_FALLBACK(name, type_arg1, name_arg1, type_arg2, name_arg2) \
+static notrace long name##_fallback(type_arg1 _##name_arg1,		  \
+				    type_arg2 _##name_arg2)		  \
+{									  \
+	register type_arg1 name_arg1 asm("r0") = _##name_arg1;		  \
+	register type_arg2 name_arg2 asm("r1") = _##name_arg2;		  \
+	register long ret asm ("r0");					  \
+	register long nr asm("r7") = __NR_##name;			  \
+									  \
+	asm volatile(							  \
+	"	swi #0\n"						  \
+	: "=r" (ret)							  \
+	: "r" (name_arg1), "r" (name_arg2), "r" (nr)			  \
+	: "memory");							  \
+									  \
+	return ret;							  \
+}
+
+#define __arch_counter_get_cntvct() arch_counter_get_cntvct()
+
+/* Avoid unresolved references emitted by GCC */
+
+void __aeabi_unwind_cpp_pr0(void)
+{
+}
+
+void __aeabi_unwind_cpp_pr1(void)
+{
+}
+
+void __aeabi_unwind_cpp_pr2(void)
+{
+}
+
+#endif /* __VDSO_COMPILER_H */
diff --git a/arch/arm/vdso/datapage.h b/arch/arm/vdso/datapage.h
new file mode 100644
index 000000000000..e3088bdfb946
--- /dev/null
+++ b/arch/arm/vdso/datapage.h
@@ -0,0 +1,25 @@
+/*
+ * Userspace implementations of __get_datapage
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __VDSO_DATAPAGE_H
+#define __VDSO_DATAPAGE_H
+
+#include <linux/types.h>
+#include <asm/vdso_datapage.h>
+
+extern const struct vdso_data *__get_datapage(void);
+
+#endif /* __VDSO_DATAPAGE_H */
diff --git a/arch/arm/vdso/vdso.lds.S b/arch/arm/vdso/vdso.lds.S
index 89ca89f12d23..1d81e8c3acf6 100644
--- a/arch/arm/vdso/vdso.lds.S
+++ b/arch/arm/vdso/vdso.lds.S
@@ -82,6 +82,7 @@ VERSION
 	global:
 		__vdso_clock_gettime;
 		__vdso_gettimeofday;
+		__vdso_clock_getres;
 	local: *;
 	};
 }
diff --git a/arch/arm/vdso/vgettimeofday.c b/arch/arm/vdso/vgettimeofday.c
index 79214d5ff097..786ff319aead 100644
--- a/arch/arm/vdso/vgettimeofday.c
+++ b/arch/arm/vdso/vgettimeofday.c
@@ -1,282 +1,355 @@
 /*
- * Copyright 2015 Mentor Graphics Corporation.
+ * Userspace implementations of gettimeofday() and friends.
  *
- * This program 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; version 2 of the
- * License.
+ * Copyright (C) 2017 Cavium, Inc.
+ * Copyright (C) 2015 Mentor Graphics Corporation
+ * Copyright (C) 2012 ARM Limited
  *
- * This program 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.
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program 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.
  *
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Author: Will Deacon <will.deacon@arm.com>
+ * Rewriten from arch64 version into C by: Andrew Pinski <apinski@cavium.com>
+ * Reworked and rebased over arm version by: Mark Salyzyn <salyzyn@android.com>
  */
 
-#include <linux/compiler.h>
-#include <linux/hrtimer.h>
-#include <linux/time.h>
-#include <asm/arch_timer.h>
 #include <asm/barrier.h>
-#include <asm/bug.h>
-#include <asm/page.h>
-#include <asm/unistd.h>
-#include <asm/vdso_datapage.h>
+#include <linux/time.h>
+#include <linux/hrtimer.h>
 
-#ifndef CONFIG_AEABI
-#error This code depends on AEABI system call conventions
-#endif
+#include "compiler.h"
+#include "datapage.h"
 
-extern struct vdso_data *__get_datapage(void);
+DEFINE_FALLBACK(gettimeofday, struct timeval *, tv, struct timezone *, tz)
+DEFINE_FALLBACK(clock_gettime, clockid_t, clock, struct timespec *, ts)
+DEFINE_FALLBACK(clock_getres, clockid_t, clock, struct timespec *, ts)
 
-static notrace u32 __vdso_read_begin(const struct vdso_data *vdata)
+static notrace u32 vdso_read_begin(const struct vdso_data *vd)
 {
 	u32 seq;
-repeat:
-	seq = ACCESS_ONCE(vdata->seq_count);
-	if (seq & 1) {
-		cpu_relax();
-		goto repeat;
-	}
-	return seq;
-}
 
-static notrace u32 vdso_read_begin(const struct vdso_data *vdata)
-{
-	u32 seq;
+	do {
+		seq = READ_ONCE(vd->tb_seq_count);
+
+		if ((seq & 1) == 0)
+			break;
 
-	seq = __vdso_read_begin(vdata);
+		cpu_relax();
+	} while (true);
 
-	smp_rmb(); /* Pairs with smp_wmb in vdso_write_end */
+	smp_rmb(); /* Pairs with second smp_wmb in update_vsyscall */
 	return seq;
 }
 
-static notrace int vdso_read_retry(const struct vdso_data *vdata, u32 start)
+static notrace int vdso_read_retry(const struct vdso_data *vd, u32 start)
 {
-	smp_rmb(); /* Pairs with smp_wmb in vdso_write_begin */
-	return vdata->seq_count != start;
-}
+	u32 seq;
 
-static notrace long clock_gettime_fallback(clockid_t _clkid,
-					   struct timespec *_ts)
-{
-	register struct timespec *ts asm("r1") = _ts;
-	register clockid_t clkid asm("r0") = _clkid;
-	register long ret asm ("r0");
-	register long nr asm("r7") = __NR_clock_gettime;
-
-	asm volatile(
-	"	swi #0\n"
-	: "=r" (ret)
-	: "r" (clkid), "r" (ts), "r" (nr)
-	: "memory");
-
-	return ret;
+	smp_rmb(); /* Pairs with first smp_wmb in update_vsyscall */
+	seq = READ_ONCE(vd->tb_seq_count);
+	return seq != start;
 }
 
-static notrace int do_realtime_coarse(struct timespec *ts,
-				      struct vdso_data *vdata)
-{
-	u32 seq;
+#ifdef CONFIG_ARM_ARCH_TIMER
 
-	do {
-		seq = vdso_read_begin(vdata);
+/*
+ * Returns the clock delta, in nanoseconds left-shifted by the clock
+ * shift.
+ */
+static __always_inline notrace u64 get_clock_shifted_nsec(const u64 cycle_last,
+							  const u32 mult,
+							  const u64 mask)
+{
+	u64 res;
 
-		ts->tv_sec = vdata->xtime_coarse_sec;
-		ts->tv_nsec = vdata->xtime_coarse_nsec;
+	/* Read the virtual counter. */
+	res = __arch_counter_get_cntvct();
 
-	} while (vdso_read_retry(vdata, seq));
+	res = res - cycle_last;
 
-	return 0;
+	res &= mask;
+	return res * mult;
 }
 
-static notrace int do_monotonic_coarse(struct timespec *ts,
-				       struct vdso_data *vdata)
+/* Code size doesn't matter (vdso is 4k/16k/64k anyway) and this is faster. */
+static __always_inline notrace int do_realtime(const struct vdso_data *vd,
+					       struct timespec *ts)
 {
-	struct timespec tomono;
-	u32 seq;
+	u32 seq, mult, shift;
+	u64 nsec, cycle_last;
+#ifdef ARCH_CLOCK_FIXED_MASK
+	static const u64 mask = ARCH_CLOCK_FIXED_MASK;
+#else
+	u64 mask;
+#endif
+
+	typeof(((struct vdso_data *)vd)->xtime_clock_sec) sec;
 
 	do {
-		seq = vdso_read_begin(vdata);
+		seq = vdso_read_begin(vd);
 
-		ts->tv_sec = vdata->xtime_coarse_sec;
-		ts->tv_nsec = vdata->xtime_coarse_nsec;
+		if (vd->use_syscall)
+			return -1;
+
+		cycle_last = vd->cs_cycle_last;
 
-		tomono.tv_sec = vdata->wtm_clock_sec;
-		tomono.tv_nsec = vdata->wtm_clock_nsec;
+		mult = vd->cs_mono_mult;
+		shift = vd->cs_shift;
+#ifndef ARCH_CLOCK_FIXED_MASK
+		mask = vd->cs_mask;
+#endif
 
-	} while (vdso_read_retry(vdata, seq));
+		sec = vd->xtime_clock_sec;
+		nsec = vd->xtime_clock_snsec;
 
-	ts->tv_sec += tomono.tv_sec;
-	timespec_add_ns(ts, tomono.tv_nsec);
+	} while (unlikely(vdso_read_retry(vd, seq)));
+
+	nsec += get_clock_shifted_nsec(cycle_last, mult, mask);
+	nsec >>= shift;
+	/* open coding timespec_add_ns to save a ts->tv_nsec = 0 */
+	ts->tv_sec = sec + __iter_div_u64_rem(nsec, NSEC_PER_SEC, &nsec);
+	ts->tv_nsec = nsec;
 
 	return 0;
 }
 
-#ifdef CONFIG_ARM_ARCH_TIMER
-
-static notrace u64 get_ns(struct vdso_data *vdata)
+static __always_inline notrace int do_monotonic(const struct vdso_data *vd,
+						struct timespec *ts)
 {
-	u64 cycle_delta;
-	u64 cycle_now;
-	u64 nsec;
-
-	cycle_now = arch_counter_get_cntvct();
+	u32 seq, mult, shift;
+	u64 nsec, cycle_last;
+#ifdef ARCH_CLOCK_FIXED_MASK
+	static const u64 mask = ARCH_CLOCK_FIXED_MASK;
+#else
+	u64 mask;
+#endif
 
-	cycle_delta = (cycle_now - vdata->cs_cycle_last) & vdata->cs_mask;
+	typeof(((struct vdso_data *)vd)->wtm_clock_nsec) wtm_nsec;
+	typeof(ts->tv_sec) sec;
 
-	nsec = (cycle_delta * vdata->cs_mult) + vdata->xtime_clock_snsec;
-	nsec >>= vdata->cs_shift;
+	do {
+		seq = vdso_read_begin(vd);
 
-	return nsec;
-}
+		if (vd->use_syscall)
+			return -1;
 
-static notrace int do_realtime(struct timespec *ts, struct vdso_data *vdata)
-{
-	u64 nsecs;
-	u32 seq;
+		cycle_last = vd->cs_cycle_last;
 
-	do {
-		seq = vdso_read_begin(vdata);
+		mult = vd->cs_mono_mult;
+		shift = vd->cs_shift;
+#ifndef ARCH_CLOCK_FIXED_MASK
+		mask = vd->cs_mask;
+#endif
 
-		if (!vdata->tk_is_cntvct)
-			return -1;
+		sec = vd->xtime_clock_sec;
+		nsec = vd->xtime_clock_snsec;
 
-		ts->tv_sec = vdata->xtime_clock_sec;
-		nsecs = get_ns(vdata);
+		sec += vd->wtm_clock_sec;
+		wtm_nsec = vd->wtm_clock_nsec;
 
-	} while (vdso_read_retry(vdata, seq));
+	} while (unlikely(vdso_read_retry(vd, seq)));
 
-	ts->tv_nsec = 0;
-	timespec_add_ns(ts, nsecs);
+	nsec += get_clock_shifted_nsec(cycle_last, mult, mask);
+	nsec >>= shift;
+	nsec += wtm_nsec;
+	/* open coding timespec_add_ns to save a ts->tv_nsec = 0 */
+	ts->tv_sec = sec + __iter_div_u64_rem(nsec, NSEC_PER_SEC, &nsec);
+	ts->tv_nsec = nsec;
 
 	return 0;
 }
 
-static notrace int do_monotonic(struct timespec *ts, struct vdso_data *vdata)
+static __always_inline notrace int do_monotonic_raw(const struct vdso_data *vd,
+						    struct timespec *ts)
 {
-	struct timespec tomono;
-	u64 nsecs;
-	u32 seq;
+	u32 seq, mult, shift;
+	u64 nsec, cycle_last;
+#ifdef ARCH_CLOCK_FIXED_MASK
+	static const u64 mask = ARCH_CLOCK_FIXED_MASK;
+#else
+	u64 mask;
+#endif
+
+	typeof(((struct vdso_data *)vd)->raw_time_sec) sec;
 
 	do {
-		seq = vdso_read_begin(vdata);
+		seq = vdso_read_begin(vd);
 
-		if (!vdata->tk_is_cntvct)
+		if (vd->use_syscall)
 			return -1;
 
-		ts->tv_sec = vdata->xtime_clock_sec;
-		nsecs = get_ns(vdata);
+		cycle_last = vd->cs_cycle_last;
+
+		mult = vd->cs_raw_mult;
+		shift = vd->cs_shift;
+#ifndef ARCH_CLOCK_FIXED_MASK
+		mask = vd->cs_mask;
+#endif
 
-		tomono.tv_sec = vdata->wtm_clock_sec;
-		tomono.tv_nsec = vdata->wtm_clock_nsec;
+		sec = vd->raw_time_sec;
+		nsec = vd->raw_time_nsec;
 
-	} while (vdso_read_retry(vdata, seq));
+	} while (unlikely(vdso_read_retry(vd, seq)));
 
-	ts->tv_sec += tomono.tv_sec;
-	ts->tv_nsec = 0;
-	timespec_add_ns(ts, nsecs + tomono.tv_nsec);
+	nsec += get_clock_shifted_nsec(cycle_last, mult, mask);
+	nsec >>= shift;
+	/* open coding timespec_add_ns to save a ts->tv_nsec = 0 */
+	ts->tv_sec = sec + __iter_div_u64_rem(nsec, NSEC_PER_SEC, &nsec);
+	ts->tv_nsec = nsec;
 
 	return 0;
 }
 
 #else /* CONFIG_ARM_ARCH_TIMER */
 
-static notrace int do_realtime(struct timespec *ts, struct vdso_data *vdata)
+static notrace int do_realtime(const struct vdso_data *vd,
+			       struct timespec *ts)
 {
 	return -1;
 }
 
-static notrace int do_monotonic(struct timespec *ts, struct vdso_data *vdata)
+static notrace int do_monotonic(const struct vdso_data *vd,
+				struct timespec *ts)
+{
+	return -1;
+}
+
+static notrace int do_monotonic_raw(const struct vdso_data *vd,
+				    struct timespec *ts)
 {
 	return -1;
 }
 
 #endif /* CONFIG_ARM_ARCH_TIMER */
 
-notrace int __vdso_clock_gettime(clockid_t clkid, struct timespec *ts)
+static notrace void do_realtime_coarse(const struct vdso_data *vd,
+				       struct timespec *ts)
 {
-	struct vdso_data *vdata;
-	int ret = -1;
+	u32 seq;
 
-	vdata = __get_datapage();
+	typeof(((struct vdso_data *)vd)->xtime_coarse_sec) sec;
+	typeof(((struct vdso_data *)vd)->xtime_coarse_nsec) nsec;
 
-	switch (clkid) {
-	case CLOCK_REALTIME_COARSE:
-		ret = do_realtime_coarse(ts, vdata);
-		break;
-	case CLOCK_MONOTONIC_COARSE:
-		ret = do_monotonic_coarse(ts, vdata);
-		break;
+	do {
+		seq = vdso_read_begin(vd);
+
+		sec = vd->xtime_coarse_sec;
+		nsec = vd->xtime_coarse_nsec;
+
+	} while (unlikely(vdso_read_retry(vd, seq)));
+
+	ts->tv_sec = sec;
+	ts->tv_nsec = nsec;
+}
+
+static notrace void do_monotonic_coarse(const struct vdso_data *vd,
+					struct timespec *ts)
+{
+	u32 seq;
+	u64 nsec;
+
+	typeof(((struct vdso_data *)vd)->wtm_clock_nsec) wtm_nsec;
+	typeof(ts->tv_sec) sec;
+
+	do {
+
+		seq = vdso_read_begin(vd);
+
+		sec = vd->xtime_coarse_sec;
+		nsec = vd->xtime_coarse_nsec;
+
+		sec += vd->wtm_clock_sec;
+		wtm_nsec = vd->wtm_clock_nsec;
+
+	} while (unlikely(vdso_read_retry(vd, seq)));
+
+	nsec += wtm_nsec;
+	/* open coding timespec_add_ns to save a ts->tv_nsec = 0 */
+	ts->tv_sec = sec + __iter_div_u64_rem(nsec, NSEC_PER_SEC, &nsec);
+	ts->tv_nsec = nsec;
+}
+
+notrace int __vdso_clock_gettime(clockid_t clock, struct timespec *ts)
+{
+	const struct vdso_data *vd = __get_datapage();
+
+	switch (clock) {
 	case CLOCK_REALTIME:
-		ret = do_realtime(ts, vdata);
+		if (do_realtime(vd, ts))
+			goto fallback;
 		break;
 	case CLOCK_MONOTONIC:
-		ret = do_monotonic(ts, vdata);
+		if (do_monotonic(vd, ts))
+			goto fallback;
 		break;
-	default:
+	case CLOCK_MONOTONIC_RAW:
+		if (do_monotonic_raw(vd, ts))
+			goto fallback;
+		break;
+	case CLOCK_REALTIME_COARSE:
+		do_realtime_coarse(vd, ts);
 		break;
+	case CLOCK_MONOTONIC_COARSE:
+		do_monotonic_coarse(vd, ts);
+		break;
+	default:
+		goto fallback;
 	}
 
-	if (ret)
-		ret = clock_gettime_fallback(clkid, ts);
-
-	return ret;
-}
-
-static notrace long gettimeofday_fallback(struct timeval *_tv,
-					  struct timezone *_tz)
-{
-	register struct timezone *tz asm("r1") = _tz;
-	register struct timeval *tv asm("r0") = _tv;
-	register long ret asm ("r0");
-	register long nr asm("r7") = __NR_gettimeofday;
-
-	asm volatile(
-	"	swi #0\n"
-	: "=r" (ret)
-	: "r" (tv), "r" (tz), "r" (nr)
-	: "memory");
-
-	return ret;
+	return 0;
+fallback:
+	return clock_gettime_fallback(clock, ts);
 }
 
 notrace int __vdso_gettimeofday(struct timeval *tv, struct timezone *tz)
 {
-	struct timespec ts;
-	struct vdso_data *vdata;
-	int ret;
+	const struct vdso_data *vd = __get_datapage();
 
-	vdata = __get_datapage();
+	if (likely(tv != NULL)) {
+		struct timespec ts;
 
-	ret = do_realtime(&ts, vdata);
-	if (ret)
-		return gettimeofday_fallback(tv, tz);
+		if (do_realtime(vd, &ts))
+			return gettimeofday_fallback(tv, tz);
 
-	if (tv) {
 		tv->tv_sec = ts.tv_sec;
 		tv->tv_usec = ts.tv_nsec / 1000;
 	}
-	if (tz) {
-		tz->tz_minuteswest = vdata->tz_minuteswest;
-		tz->tz_dsttime = vdata->tz_dsttime;
-	}
 
-	return ret;
-}
-
-/* Avoid unresolved references emitted by GCC */
+	if (unlikely(tz != NULL)) {
+		tz->tz_minuteswest = vd->tz_minuteswest;
+		tz->tz_dsttime = vd->tz_dsttime;
+	}
 
-void __aeabi_unwind_cpp_pr0(void)
-{
+	return 0;
 }
 
-void __aeabi_unwind_cpp_pr1(void)
+int __vdso_clock_getres(clockid_t clock_id, struct timespec *res)
 {
-}
+	typeof(res->tv_nsec) nsec;
+
+	if (clock_id == CLOCK_REALTIME ||
+	    clock_id == CLOCK_MONOTONIC ||
+	    clock_id == CLOCK_MONOTONIC_RAW)
+		nsec = MONOTONIC_RES_NSEC;
+	else if (clock_id == CLOCK_REALTIME_COARSE ||
+		 clock_id == CLOCK_MONOTONIC_COARSE)
+		nsec = LOW_RES_NSEC;
+	else
+		return clock_getres_fallback(clock_id, res);
+
+	if (likely(res != NULL)) {
+		res->tv_sec = 0;
+		res->tv_nsec = nsec;
+	}
 
-void __aeabi_unwind_cpp_pr2(void)
-{
+	return 0;
 }
