Atomic increment and get?

[Ryan Stone]

2011/10/3 Lev Serebryakov <lev at freebsd.org>:
> Hello, Hackers.
>
>  Is here atomic increment and get (or add and get) operation in
>  kernel? I cannot find one. Here is atomic_add_32(), but it doesn't
>  return result. And here is no atomic_add_64() on 32 bit system :(

man atomic gives all of the atomic primitives provided in the kernel.
In this case you want atomic_fetchadd_X.