linux-kernel - [tip: timers/vdso] ARM: VDSO: Provide clock_getres

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Message-ID: <176831205531.510.4678880551764613269.tip-bot2@tip-bot2>
Date: Tue, 13 Jan 2026 13:47:35 -0000
From: tip-bot2 for Thomas Weißschuh <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: thomas.weissschuh@...utronix.de, Thomas Gleixner <tglx@...nel.org>,
 x86@...nel.org, linux-kernel@...r.kernel.org
Subject: [tip: timers/vdso] ARM: VDSO: Provide clock_getres_time64()

The following commit has been merged into the timers/vdso branch of tip:

Commit-ID:     1149dcdfc9ef4b3fa90b431a5752da53dcadb0d2
Gitweb:        https://git.kernel.org/tip/1149dcdfc9ef4b3fa90b431a5752da53dcadb0d2
Author:        Thomas Weißschuh <thomas.weissschuh@...utronix.de>
AuthorDate:    Tue, 23 Dec 2025 07:59:18 +01:00
Committer:     Thomas Gleixner <tglx@...nel.org>
CommitterDate: Tue, 13 Jan 2026 14:42:23 +01:00

ARM: VDSO: Provide clock_getres_time64()

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@...utronix.de>
Signed-off-by: Thomas Gleixner <tglx@...nel.org>
Link: https://patch.msgid.link/20251223-vdso-compat-time32-v1-7-97ea7a06a543@linutronix.de
---
 arch/arm/kernel/vdso.c        | 1 +
 arch/arm/vdso/vdso.lds.S      | 1 +
 arch/arm/vdso/vgettimeofday.c | 5 +++++
 3 files changed, 7 insertions(+)

diff --git a/arch/arm/kernel/vdso.c b/arch/arm/kernel/vdso.c
index 566c40f..0108f33 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 7c08371..74d8d8b 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 3554aa3..f7a2f5d 100644
--- a/arch/arm/vdso/vgettimeofday.c
+++ b/arch/arm/vdso/vgettimeofday.c
@@ -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)