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To take advantage of the commonly defined vdso interface for gettimeofday() the architectural code requires an adaptation. Re-implement the gettimeofday VDSO in C in order to use lib/vdso. With the new implementation arm64 gains support for CLOCK_BOOTTIME and CLOCK_TAI. [ tglx: Reformatted the function line breaks ] Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Shijith Thotton <sthotton@marvell.com> Tested-by: Andre Przywara <andre.przywara@arm.com> Cc: linux-arch@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-mips@vger.kernel.org Cc: linux-kselftest@vger.kernel.org Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Russell King <linux@armlinux.org.uk> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Paul Burton <paul.burton@mips.com> Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Mark Salyzyn <salyzyn@android.com> Cc: Peter Collingbourne <pcc@google.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Dmitry Safonov <0x7f454c46@gmail.com> Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk> Cc: Huw Davies <huw@codeweavers.com> Link: https://lkml.kernel.org/r/20190621095252.32307-5-vincenzo.frascino@arm.com
27 lines
585 B
C
27 lines
585 B
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* ARM64 userspace implementations of gettimeofday() and similar.
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*
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* Copyright (C) 2018 ARM Limited
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*
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*/
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#include <linux/time.h>
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#include <linux/types.h>
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int __kernel_clock_gettime(clockid_t clock,
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struct __kernel_timespec *ts)
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{
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return __cvdso_clock_gettime(clock, ts);
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}
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int __kernel_gettimeofday(struct __kernel_old_timeval *tv,
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struct timezone *tz)
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{
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return __cvdso_gettimeofday(tv, tz);
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}
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int __kernel_clock_getres(clockid_t clock_id,
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struct __kernel_timespec *res)
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{
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return __cvdso_clock_getres(clock_id, res);
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}
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