Re: [PATCH 2/2] locking/rwsem: Disable optimistic spinning for PA-RISC

[Peter Zijlstra]

On Fri, Jun 06, 2014 at 10:57:07AM -0700, James Bottomley wrote:
> > diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
> > index 29f2e988c56a..407c87d9879a 100644
> > --- a/arch/sparc/Kconfig
> > +++ b/arch/sparc/Kconfig
> > @@ -78,6 +78,7 @@ config SPARC64
                      ^^^^^^^^^^^^^^


> >  	select HAVE_C_RECORDMCOUNT
> >  	select NO_BOOTMEM
> >  	select HAVE_ARCH_AUDITSYSCALL
> > +	select ARCH_SUPPORTS_ATOMIC_RMW
> 
> Sparc64 does, Sparc32 doesn't, so shouldn't that be
> 
> select ARCH_SUPPORTS_ATOMIC_RMW if 64BIT
> 
> ?

arch/sparc/Kconfig has 3 large sections:

config SPARC (included in both)
config SPARC32 (specific to 32bit)
config SPARC64 (specific to 64bit)

I added it to the last.
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