linux-kernel - [PATCH 2/4] x86/um/vdso: Use prototypes from generic vDSO headers

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Message-Id: <20251013-uml-vdso-cleanup-v1-2-a079c7adcc69@weissschuh.net>
Date: Mon, 13 Oct 2025 12:40:19 +0200
From: Thomas Weißschuh <linux@...ssschuh.net>
To: Richard Weinberger <richard@....at>, 
 Anton Ivanov <anton.ivanov@...bridgegreys.com>, 
 Johannes Berg <johannes@...solutions.net>, 
 Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>, 
 Borislav Petkov <bp@...en8.de>, Dave Hansen <dave.hansen@...ux.intel.com>, 
 x86@...nel.org, "H. Peter Anvin" <hpa@...or.com>
Cc: linux-um@...ts.infradead.org, linux-kernel@...r.kernel.org, 
 Thomas Weißschuh <linux@...ssschuh.net>
Subject: [PATCH 2/4] x86/um/vdso: Use prototypes from generic vDSO headers

The generic vDSO library provides a convenient header for the vDSO
function prototypes, use it.

Signed-off-by: Thomas Weißschuh <linux@...ssschuh.net>
---
 arch/x86/um/vdso/um_vdso.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/arch/x86/um/vdso/um_vdso.c b/arch/x86/um/vdso/um_vdso.c
index 5cadcc04d422..02d41fdb5655 100644
--- a/arch/x86/um/vdso/um_vdso.c
+++ b/arch/x86/um/vdso/um_vdso.c
@@ -9,14 +9,12 @@
 /* Disable profiling for userspace code */
 #define DISABLE_BRANCH_PROFILING

+#include <vdso/gettime.h>
 #include <linux/time.h>
 #include <linux/getcpu.h>
 #include <asm/unistd.h>

 /* workaround for -Wmissing-prototypes warnings */
-int __vdso_clock_gettime(clockid_t clock, struct __kernel_timespec *ts);
-int __vdso_gettimeofday(struct __kernel_old_timeval *tv, struct timezone *tz);
-__kernel_old_time_t __vdso_time(__kernel_old_time_t *t);
 long __vdso_getcpu(unsigned int *cpu, unsigned int *node, struct getcpu_cache *unused);

 int __vdso_clock_gettime(clockid_t clock, struct __kernel_timespec *ts)

-- 
2.51.0