[PATCH] Use definition for cmpxchg swi

[Russell King - ARM Linux]

On Sun, Nov 08, 2009 at 08:42:51PM -0500, Nicolas Pitre wrote:
> On Sun, 8 Nov 2009, Russell King - ARM Linux wrote:
> 
> > Use a definition for the cmpxchg SWI instead of hard-coding the number.
> 
> Well...  Initially I didn't use a definition in unistd.h because I 
> didn't want user space to "see" it and assume this was part of the 
> kernel ABI since this is actually just an implementation detail that 
> depends on a particular kernel configuration.

The ifdef __KERNEL__ is sufficient for that - kernel headers are now
stripped of code within these defines during 'make installheaders'.