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riscv: vdso: Untangle Kconfig logic

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On riscv32 the generic vDSO infrastructure is used but without its
time-related functionality. The Kconfig logic to implement this
treats HAVE_GENERIC_VDSO as a synonym for GENERIC_GETTIMEOFDAY.
This works today due to some underlying issues in how the generic vDSO
library works. Some future cleanups will break this logic.

Restructure the Kconfig logic, so HAVE_GENERIC_VDSO refers to the generic
library in general and GENERIC_GETTIMEOFDAY refers to its time-related
functionality.

Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/all/20250826-vdso-cleanups-v1-6-d9b65750e49f@linutronix.de
This commit is contained in:
Thomas Weißschuh
2025-08-26 08:17:09 +02:00
committed by Thomas Gleixner
parent ea1a1fa919
commit eb3b66aab7
1 changed files with 7 additions and 7 deletions
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14
arch/riscv/Kconfig
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@@ -52,7 +52,7 @@ config RISCV
select ARCH_HAS_SYSCALL_WRAPPER
select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
select ARCH_HAS_UBSAN
select ARCH_HAS_VDSO_ARCH_DATA if GENERIC_VDSO_DATA_STORE
select ARCH_HAS_VDSO_ARCH_DATA if HAVE_GENERIC_VDSO
select ARCH_KEEP_MEMBLOCK if ACPI
select ARCH_MHP_MEMMAP_ON_MEMORY_ENABLE if 64BIT && MMU
select ARCH_OPTIONAL_KERNEL_RWX if ARCH_HAS_STRICT_KERNEL_RWX
@@ -107,7 +107,7 @@ config RISCV
select GENERIC_CPU_VULNERABILITIES
select GENERIC_EARLY_IOREMAP
select GENERIC_ENTRY
select GENERIC_GETTIMEOFDAY if HAVE_GENERIC_VDSO
select GENERIC_GETTIMEOFDAY if HAVE_GENERIC_VDSO && 64BIT
select GENERIC_IDLE_POLL_SETUP
select GENERIC_IOREMAP if MMU
select GENERIC_IRQ_IPI if SMP
@@ -120,9 +120,9 @@ config RISCV
select GENERIC_PCI_IOMAP
select GENERIC_SCHED_CLOCK
select GENERIC_SMP_IDLE_THREAD
select GENERIC_TIME_VSYSCALL if MMU && 64BIT
select GENERIC_VDSO_DATA_STORE if MMU
select GENERIC_VDSO_TIME_NS if HAVE_GENERIC_VDSO
select GENERIC_TIME_VSYSCALL if GENERIC_GETTIMEOFDAY
select GENERIC_VDSO_DATA_STORE if HAVE_GENERIC_VDSO
select GENERIC_VDSO_TIME_NS if GENERIC_GETTIMEOFDAY
select HARDIRQS_SW_RESEND
select HAS_IOPORT if MMU
select HAVE_ALIGNED_STRUCT_PAGE
@@ -165,7 +165,7 @@ config RISCV
select HAVE_FUNCTION_ARG_ACCESS_API
select HAVE_FUNCTION_ERROR_INJECTION
select HAVE_GCC_PLUGINS
select HAVE_GENERIC_VDSO if MMU && 64BIT
select HAVE_GENERIC_VDSO if MMU
select HAVE_IRQ_TIME_ACCOUNTING
select HAVE_KERNEL_BZIP2 if !XIP_KERNEL && !EFI_ZBOOT
select HAVE_KERNEL_GZIP if !XIP_KERNEL && !EFI_ZBOOT
@@ -221,7 +221,7 @@ config RISCV
select THREAD_INFO_IN_TASK
select TRACE_IRQFLAGS_SUPPORT
select UACCESS_MEMCPY if !MMU
select VDSO_GETRANDOM if HAVE_GENERIC_VDSO
select VDSO_GETRANDOM if HAVE_GENERIC_VDSO && 64BIT
select USER_STACKTRACE_SUPPORT
select ZONE_DMA32 if 64BIT