[PATCH 7/9] ARM: VDSO: provide clock_getres_time64()

[Thomas Weißschuh]

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 at linutronix.de>
---
 arch/arm/kernel/vdso.c        | 1 +
 arch/arm/vdso/vdso.lds.S      | 1 +
 arch/arm/vdso/vgettimeofday.c | 6 ++++++
 3 files changed, 8 insertions(+)

diff --git a/arch/arm/kernel/vdso.c b/arch/arm/kernel/vdso.c
index 566c40f0f7c7..0108f33d6bed 100644
--- a/arch/arm/kernel/vdso.c
+++ b/arch/arm/kernel/vdso.c
@@ -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");
 	}
 }
 
diff --git a/arch/arm/vdso/vdso.lds.S b/arch/arm/vdso/vdso.lds.S
index 7c08371f4400..74d8d8bc8a40 100644
--- a/arch/arm/vdso/vdso.lds.S
+++ b/arch/arm/vdso/vdso.lds.S
@@ -74,6 +74,7 @@ VERSION
 		__vdso_gettimeofday;
 		__vdso_clock_getres;
 		__vdso_clock_gettime64;
+		__vdso_clock_getres_time64;
 	local: *;
 	};
 }
diff --git a/arch/arm/vdso/vgettimeofday.c b/arch/arm/vdso/vgettimeofday.c
index 3554aa35f1ba..2874dde7e6cf 100644
--- a/arch/arm/vdso/vgettimeofday.c
+++ b/arch/arm/vdso/vgettimeofday.c
@@ -34,6 +34,12 @@ 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)

-- 
2.52.0