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Commit 5d168964 authored by Will Deacon's avatar Will Deacon
Browse files

arm64: kconfig: Ensure spinlock fastpaths are inlined if !PREEMPT 



When running with CONFIG_PREEMPT=n, the spinlock fastpaths fit inside
64 bytes, which typically coincides with the L1 I-cache line size.

Inline the spinlock fastpaths, like we do already for rwlocks.

Signed-off-by: default avatarWill Deacon <will.deacon@arm.com>
parent c1109047

arch/arm64/Kconfig

+10 −0
Original line number Diff line number Diff line
@@ -42,6 +42,16 @@ config ARM64 
	select ARCH_INLINE_WRITE_UNLOCK_BH if !PREEMPT

	select ARCH_INLINE_WRITE_UNLOCK_IRQ if !PREEMPT

	select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE if !PREEMPT

	select ARCH_INLINE_SPIN_TRYLOCK if !PREEMPT

	select ARCH_INLINE_SPIN_TRYLOCK_BH if !PREEMPT

	select ARCH_INLINE_SPIN_LOCK if !PREEMPT

	select ARCH_INLINE_SPIN_LOCK_BH if !PREEMPT

	select ARCH_INLINE_SPIN_LOCK_IRQ if !PREEMPT

	select ARCH_INLINE_SPIN_LOCK_IRQSAVE if !PREEMPT

	select ARCH_INLINE_SPIN_UNLOCK if !PREEMPT

	select ARCH_INLINE_SPIN_UNLOCK_BH if !PREEMPT

	select ARCH_INLINE_SPIN_UNLOCK_IRQ if !PREEMPT

	select ARCH_INLINE_SPIN_UNLOCK_IRQRESTORE if !PREEMPT

	select ARCH_USE_CMPXCHG_LOCKREF

	select ARCH_USE_QUEUED_RWLOCKS

	select ARCH_USE_QUEUED_SPINLOCKS