95034c44e6
- __predict_false reseeding on entry as it is almost never true. - don't blindly atomic_cmpset as on x86 it ends up dirtying the cacheline. it almost ever succeeds per above - fetch the timestamp prior to getting the cpu number Reviewed by: cem Approved by: secteam (delphij) Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D20242