Re: [PATCH RT 1/2] x86/kconfig: Use ticket spinlocks for -rt

[Sebastian Andrzej Siewior]

On 2018-10-04 15:46:21 [+0200], Daniel Wagner wrote:
> diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
> index 6df130a37d41..21f9418d850f 100644
> --- a/arch/x86/Kconfig
> +++ b/arch/x86/Kconfig
> @@ -42,7 +42,7 @@ config X86
>  	select ARCH_USE_BUILTIN_BSWAP
>  	select ARCH_USE_CMPXCHG_LOCKREF		if X86_64
>  	select ARCH_USE_QUEUED_RWLOCKS
> -	select ARCH_USE_QUEUED_SPINLOCKS
> +	select ARCH_USE_QUEUED_SPINLOCKS	if !PREEMPT_RT_FULL
>  	select ARCH_WANT_BATCHED_UNMAP_TLB_FLUSH
>  	select ARCH_WANTS_DYNAMIC_TASK_STRUCT
>  	select ARCH_WANT_FRAME_POINTERS

I would argue, that RT exposes a problem and we should not limit it to
RT only. Anyone?

Sebastian