glebius 60d5d98bc3 Make uz_allocs, uz_frees and uz_fails counter(9). This removes some
atomic updates and reduces amount of data protected by zone lock.

During startup point these fields to EARLY_COUNTER. After startup
allocate them for all early zones.

Tested by:	pho
2019-01-15 18:24:34 +00:00
..
2017-11-30 15:45:42 +00:00
2018-08-01 18:45:51 +00:00
2018-09-06 16:17:45 +00:00