diff options
| author | Vincenzo Frascino <vincenzo.frascino@arm.com> | 2019-06-21 12:52:51 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2019-06-22 22:21:10 +0300 |
| commit | 22ca962288c0a1c9729e8e440b9bb9ad05df6db6 (patch) | |
| tree | c1b3c0c69fd0db55f3d7bb8533aae3dc9237ec51 | |
| parent | f66501dc53e72079045a6a17e023b41316ede220 (diff) | |
| download | linux-22ca962288c0a1c9729e8e440b9bb9ad05df6db6.tar.xz | |
x86/vdso: Add clock_gettime64() entry point
Linux 5.1 gained the new clock_gettime64() syscall to address the Y2038
problem on 32bit systems. The x86 VDSO is missing support for this variant
of clock_gettime().
Update the x86 specific vDSO library accordingly so it exposes the new time
getter.
[ tglx: Massaged changelog ]
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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>
Cc: Shijith Thotton <sthotton@marvell.com>
Cc: Andre Przywara <andre.przywara@arm.com>
Link: https://lkml.kernel.org/r/20190621095252.32307-25-vincenzo.frascino@arm.com
| -rw-r--r-- | arch/x86/entry/vdso/vclock_gettime.c | 8 | ||||
| -rw-r--r-- | arch/x86/entry/vdso/vdso32/vdso32.lds.S | 1 |
2 files changed, 9 insertions, 0 deletions
diff --git a/arch/x86/entry/vdso/vclock_gettime.c b/arch/x86/entry/vdso/vclock_gettime.c index 1a648b509d46..d9ff616bb0f6 100644 --- a/arch/x86/entry/vdso/vclock_gettime.c +++ b/arch/x86/entry/vdso/vclock_gettime.c @@ -67,6 +67,14 @@ int __vdso_clock_gettime(clockid_t clock, struct old_timespec32 *ts) int clock_gettime(clockid_t, struct old_timespec32 *) __attribute__((weak, alias("__vdso_clock_gettime"))); +int __vdso_clock_gettime64(clockid_t clock, struct __kernel_timespec *ts) +{ + return __cvdso_clock_gettime(clock, ts); +} + +int clock_gettime64(clockid_t, struct __kernel_timespec *) + __attribute__((weak, alias("__vdso_clock_gettime64"))); + int __vdso_clock_getres(clockid_t clock, struct old_timespec32 *res) { return __cvdso_clock_getres_time32(clock, res); diff --git a/arch/x86/entry/vdso/vdso32/vdso32.lds.S b/arch/x86/entry/vdso/vdso32/vdso32.lds.S index 991b26cc855b..c7720995ab1a 100644 --- a/arch/x86/entry/vdso/vdso32/vdso32.lds.S +++ b/arch/x86/entry/vdso/vdso32/vdso32.lds.S @@ -27,6 +27,7 @@ VERSION __vdso_gettimeofday; __vdso_time; __vdso_clock_getres; + __vdso_clock_gettime64; }; LINUX_2.5 { |