locking/atomic: nios2: move to ARCH_ATOMIC

We'd like all architectures to convert to ARCH_ATOMIC, as once all
architectures are converted it will be possible to make significant
cleanups to the atomics headers, and this will make it much easier to
generically enable atomic functionality (e.g. debug logic in the
instrumented wrappers).

As a step towards that, this patch migrates nios2 to ARCH_ATOMIC, using
the asm-generic implementations.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Boqun Feng <boqun.feng@gmail.com>
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20210525140232.53872-25-mark.rutland@arm.com

diff --git a/arch/nios2/Kconfig b/arch/nios2/Kconfig
index c24955c81c9274e8293bea3006e1a66a2cde3816..67dae88c5b53d548e48f1ffb2dab61846077ad92 100644 (file)
--- a/arch/nios2/Kconfig
+++ b/arch/nios2/Kconfig
@@ -2,6 +2,7 @@
 config NIOS2
        def_bool y
        select ARCH_32BIT_OFF_T
+       select ARCH_ATOMIC
        select ARCH_HAS_DMA_PREP_COHERENT
        select ARCH_HAS_SYNC_DMA_FOR_CPU
        select ARCH_HAS_SYNC_DMA_FOR_DEVICE