Re: [patch 2/8] Implement always-locked bit ops, for memory shared with an SMP hypervisor.

Chris Wright
2006-08-03T17:16:47Z

* Christoph Lameter (clameter@sgi.com) wrote:
> An include <asm/xen-bitops.h> would need to fall back to asm-generic if
> there is no file in asm-arch/xen-bitops.h. I thought we had such a
> mechanism?

While Xen is the primary user, it is a misnomer to call it xen-bitops.
These are simply always locked, hence the sync-bitops name. Also,
there's a use of sync_cmpxchg, and cmpxchg is not in bitops.h.

As for the mechanism, it is manual. Arch specific header includes
asm-generic one.