[tip: timers/vdso] sparc: vdso: Respect COMPAT_32BIT_TIME

[tip-bot2 for Thomas Weißschuh]

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

Commit-ID:     2700297b69fe146a14c44f3d7a78771269f160d2
Gitweb:        https://git.kernel.org/tip/2700297b69fe146a14c44f3d7a78771269f160d2
Author:        Thomas Weißschuh <thomas.weissschuh@xxxxxxxxxxxxx>
AuthorDate:    Thu, 02 Jul 2026 10:21:32 +02:00
Committer:     Thomas Gleixner <tglx@xxxxxxxxxx>
CommitterDate: Tue, 07 Jul 2026 23:52:53 +02:00

sparc: vdso: Respect COMPAT_32BIT_TIME

If CONFIG_COMPAT_32BIT_TIME is disabled then the vDSO should not
provide any 32-bit time related functionality. This is the intended
effect of the kconfig option and also the fallback system calls would
also not be implemented.

Signed-off-by: Thomas Weißschuh <thomas.weissschuh@xxxxxxxxxxxxx>
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxx>
Reviewed-by: Philippe Mathieu-Daudé <philmd@xxxxxxxxxxxxxxxx>
Reviewed-by: Arnd Bergmann <arnd@xxxxxxxx>
Link: https://patch.msgid.link/20260702-vdso-compat_32bit_time-v3-8-db9f36d8d432@xxxxxxxxxxxxx
---
 arch/sparc/vdso/vclock_gettime.c    | 4 ++++
 arch/sparc/vdso/vdso32/vdso32.lds.S | 6 ++++--
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/arch/sparc/vdso/vclock_gettime.c b/arch/sparc/vdso/vclock_gettime.c
index 1d98593..221bd4e 100644
--- a/arch/sparc/vdso/vclock_gettime.c
+++ b/arch/sparc/vdso/vclock_gettime.c
@@ -21,6 +21,7 @@
 
 #include "../../../../lib/vdso/gettimeofday.c"
 
+#if defined(CONFIG_SPARC64) || defined(CONFIG_COMPAT_32BIT_TIME)
 int __vdso_gettimeofday(struct __kernel_old_timeval *tv, struct timezone *tz)
 {
 	return __cvdso_gettimeofday(tv, tz);
@@ -28,6 +29,7 @@ int __vdso_gettimeofday(struct __kernel_old_timeval *tv, struct timezone *tz)
 
 int gettimeofday(struct __kernel_old_timeval *, struct timezone *)
 	__weak __alias(__vdso_gettimeofday);
+#endif
 
 #if defined(CONFIG_SPARC64)
 int __vdso_clock_gettime(clockid_t clock, struct __kernel_timespec *ts)
@@ -40,6 +42,7 @@ int clock_gettime(clockid_t, struct __kernel_timespec *)
 
 #else
 
+#if defined(CONFIG_COMPAT_32BIT_TIME)
 int __vdso_clock_gettime(clockid_t clock, struct old_timespec32 *ts)
 {
 	return __cvdso_clock_gettime32(clock, ts);
@@ -47,6 +50,7 @@ int __vdso_clock_gettime(clockid_t clock, struct old_timespec32 *ts)
 
 int clock_gettime(clockid_t, struct old_timespec32 *)
 	__weak __alias(__vdso_clock_gettime);
+#endif
 
 int __vdso_clock_gettime64(clockid_t clock, struct __kernel_timespec *ts)
 {
diff --git a/arch/sparc/vdso/vdso32/vdso32.lds.S b/arch/sparc/vdso/vdso32/vdso32.lds.S
index a14e4f7..2805216 100644
--- a/arch/sparc/vdso/vdso32/vdso32.lds.S
+++ b/arch/sparc/vdso/vdso32/vdso32.lds.S
@@ -15,12 +15,14 @@
 VERSION {
 	LINUX_2.6 {
 	global:
+#ifdef CONFIG_COMPAT_32BIT_TIME
 		clock_gettime;
 		__vdso_clock_gettime;
-		clock_gettime64;
-		__vdso_clock_gettime64;
 		gettimeofday;
 		__vdso_gettimeofday;
+#endif
+		clock_gettime64;
+		__vdso_clock_gettime64;
 	local: *;
 	};
 }