vdso: Drop Kconfig GENERIC_VDSO_TIME_NS

All architectures implementing time-related functionality in the vDSO are
using the generic vDSO library which handles time namespaces properly.

Remove the now unnecessary Kconfig symbol.

Enables the use of time namespaces on architectures, which use the
generic vDSO but did not enable GENERIC_VDSO_TIME_NS, namely MIPS and arm.

Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Link: https://lore.kernel.org/all/20250826-vdso-cleanups-v1-10-d9b65750e49f@linutronix.de

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index b0f007b396c81906d3a0a66f8a240d97e0ae2d88..e19b006842e223441b87370a5ae23756e0e85883 100644 (file)
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -162,7 +162,6 @@ config ARM64
        select GENERIC_SMP_IDLE_THREAD
        select GENERIC_TIME_VSYSCALL
        select GENERIC_GETTIMEOFDAY
-       select GENERIC_VDSO_TIME_NS
        select HARDIRQS_SW_RESEND
        select HAS_IOPORT
        select HAVE_MOVE_PMD

diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig
index d15b201d55f951d95435a38789cf47ea9f0adac9..754626b58b929e605d51c441cfa862bd504b5892 100644 (file)
--- a/arch/loongarch/Kconfig
+++ b/arch/loongarch/Kconfig
@@ -108,7 +108,6 @@ config LOONGARCH
        select GENERIC_SCHED_CLOCK
        select GENERIC_SMP_IDLE_THREAD
        select GENERIC_TIME_VSYSCALL
-       select GENERIC_VDSO_TIME_NS
        select GPIOLIB
        select HAS_IOPORT
        select HAVE_ARCH_AUDITSYSCALL

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 78c82af955616c57ab38ea1241e3471eb8d0a65d..d715e3d65b5c29e0010b0a5e5821aee34e31e176 100644 (file)
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -207,7 +207,6 @@ config PPC
        select GENERIC_PCI_IOMAP                if PCI
        select GENERIC_SMP_IDLE_THREAD
        select GENERIC_TIME_VSYSCALL
-       select GENERIC_VDSO_TIME_NS
        select HAS_IOPORT                       if PCI
        select HAVE_ARCH_AUDITSYSCALL
        select HAVE_ARCH_HUGE_VMALLOC           if HAVE_ARCH_HUGE_VMAP

diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index f6cf9180ccf2c9774248fea93a8276de3791ad71..6e5efbeb83d7f0fe556bc04ec9f58b80d2780b43 100644 (file)
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -121,7 +121,6 @@ config RISCV
        select GENERIC_SCHED_CLOCK
        select GENERIC_SMP_IDLE_THREAD
        select GENERIC_TIME_VSYSCALL if GENERIC_GETTIMEOFDAY
-       select GENERIC_VDSO_TIME_NS if GENERIC_GETTIMEOFDAY
        select HARDIRQS_SW_RESEND
        select HAS_IOPORT if MMU
        select HAVE_ALIGNED_STRUCT_PAGE

diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 696d2243d64b04e77b9b4631fc8bc301916b48ae..e06ebbd860da93a8c838113c3c1b946d51dfe1b4 100644 (file)
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -167,7 +167,6 @@ config S390
        select GENERIC_GETTIMEOFDAY
        select GENERIC_SMP_IDLE_THREAD
        select GENERIC_TIME_VSYSCALL
-       select GENERIC_VDSO_TIME_NS
        select GENERIC_IOREMAP if PCI
        select HAVE_ALIGNED_STRUCT_PAGE
        select HAVE_ARCH_AUDITSYSCALL

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 1e74b2a356e42bdc0ede258f44e18ba29dd90174..d1961811e291e8adcf0b46fafbd53f0a44b5d25b 100644 (file)
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -181,7 +181,6 @@ config X86
        select GENERIC_SMP_IDLE_THREAD
        select GENERIC_TIME_VSYSCALL
        select GENERIC_GETTIMEOFDAY
-       select GENERIC_VDSO_TIME_NS
        select GENERIC_VDSO_OVERFLOW_PROTECT
        select GUP_GET_PXX_LOW_HIGH             if X86_PAE
        select HARDIRQS_SW_RESEND

diff --git a/init/Kconfig b/init/Kconfig
index d811cad02a7509e4872bdd9a01aa7b9637269769..497bd326d39a6b505564d392ec53253c4732d3a7 100644 (file)
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -1347,7 +1347,7 @@ config UTS_NS
 
 config TIME_NS
        bool "TIME namespace"
-       depends on GENERIC_VDSO_TIME_NS
+       depends on GENERIC_GETTIMEOFDAY
        default y
        help
          In this namespace boottime and monotonic clocks can be set.

diff --git a/lib/vdso/Kconfig b/lib/vdso/Kconfig
index 48ffb0f6fa413ea7da4e43c7f7a24cb232b38ea1..3d2c2b90d193f984e3a202e701fa7f0bfa8f1938 100644 (file)
--- a/lib/vdso/Kconfig
+++ b/lib/vdso/Kconfig
@@ -12,12 +12,6 @@ config GENERIC_GETTIMEOFDAY
          Each architecture that enables this feature has to
          provide the fallback implementation.
 
-config GENERIC_VDSO_TIME_NS
-       bool
-       help
-         Selected by architectures which support time namespaces in the
-         VDSO
-
 config GENERIC_VDSO_OVERFLOW_PROTECT
        bool
        help

diff --git a/tools/testing/selftests/pidfd/config b/tools/testing/selftests/pidfd/config
index 6133524710f790c1f83af6f2b628de9b62eee6c3..cf7cc0ce02484e91799b7cb132447283f818d729 100644 (file)
--- a/tools/testing/selftests/pidfd/config
+++ b/tools/testing/selftests/pidfd/config
@@ -4,6 +4,5 @@ CONFIG_USER_NS=y
 CONFIG_PID_NS=y
 CONFIG_NET_NS=y
 CONFIG_TIME_NS=y
-CONFIG_GENERIC_VDSO_TIME_NS=y
 CONFIG_CGROUPS=y
 CONFIG_CHECKPOINT_RESTORE=y