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x86/vdso: Provide clock_getres_time64() for x86-32

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For consistency with __vdso_clock_gettime64() there should also be a
64-bit variant of clock_getres(). This will allow the extension of
CONFIG_COMPAT_32BIT_TIME to the vDSO and finally the removal of 32-bit
time types from the kernel and UAPI.

Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Link: https://patch.msgid.link/20251223-vdso-compat-time32-v1-5-97ea7a06a543@linutronix.de
This commit is contained in:
Thomas Weißschuh
2025-12-23 07:59:16 +01:00
committed by Thomas Gleixner
parent 4e6a231298
commit 21bbfd7404
2 changed files with 9 additions and 0 deletions
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8
arch/x86/entry/vdso/vclock_gettime.c
View File

@@ -74,4 +74,12 @@ int __vdso_clock_getres(clockid_t clock, struct old_timespec32 *res)
int clock_getres(clockid_t, struct old_timespec32 *)
__attribute__((weak, alias("__vdso_clock_getres")));
int __vdso_clock_getres_time64(clockid_t clock, struct __kernel_timespec *ts)
{
return __cvdso_clock_getres(clock, ts);
}
int clock_getres_time64(clockid_t, struct __kernel_timespec *)
__attribute__((weak, alias("__vdso_clock_getres_time64")));
#endif

1
arch/x86/entry/vdso/vdso32/vdso32.lds.S
View File

@@ -28,6 +28,7 @@ VERSION
__vdso_time;
__vdso_clock_getres;
__vdso_clock_gettime64;
__vdso_clock_getres_time64;
__vdso_getcpu;
};