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ARM: VDSO: Provide clock_getres_time64()

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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-v1-7-97ea7a06a543@linutronix.de
This commit is contained in:
Thomas Weißschuh
2025-12-23 07:59:18 +01:00
committed by Thomas Gleixner
parent b9fecf0ddd
commit 1149dcdfc9
3 changed files with 7 additions and 0 deletions
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1
arch/arm/kernel/vdso.c
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@@ -162,6 +162,7 @@ static void __init patch_vdso(void *ehdr)
vdso_nullpatch_one(&einfo, "__vdso_clock_gettime");
vdso_nullpatch_one(&einfo, "__vdso_clock_gettime64");
vdso_nullpatch_one(&einfo, "__vdso_clock_getres");
vdso_nullpatch_one(&einfo, "__vdso_clock_getres_time64");
}
}

1
arch/arm/vdso/vdso.lds.S
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@@ -74,6 +74,7 @@ VERSION
__vdso_gettimeofday;
__vdso_clock_getres;
__vdso_clock_gettime64;
__vdso_clock_getres_time64;
local: *;
};
}

5
arch/arm/vdso/vgettimeofday.c
View File

@@ -34,6 +34,11 @@ int __vdso_clock_getres(clockid_t clock_id,
return __cvdso_clock_getres_time32(clock_id, res);
}
int __vdso_clock_getres_time64(clockid_t clock_id, struct __kernel_timespec *res)
{
return __cvdso_clock_getres(clock_id, res);
}
/* Avoid unresolved references emitted by GCC */
void __aeabi_unwind_cpp_pr0(void)