On Mon, Jun 18, 2018 at 11:19:08AM +0100, Mark Rutland wrote: > Currently architecture must implement atomic_fetch_add_unless(), with > common code providing atomic_add_unless(). Architectures must also > implement atmic64_add_unless() directly, with no corresponding > atomic64_fetch_add_unless(). > > This divergenece is unfortunate, and means that the APIs for atomic_t, > atomic64_t, and atomic_long_t differ. > > In preparation for unifying things, with architectures providing > atomic64_fetch_add_unless, this patch adds a generic > atomic64_add_unless() which will use atomic64_fetch_add_unless(). The > instrumented atomics are updated to take this case into account.
> +#ifdef arch_atomic64_fetch_add_unless > +#define atomic64_fetch_add_unless atomic64_fetch_add_unless > +static __always_inline int atomic64_fetch_add_unless(atomic64_t *v, s64 a, > s64 u) Whoops: s/int/s64/ here I've fixed that up in my branch. Thanks, Mark.
