KERNEL_CONFIG+='HZ_1000 RCU_BOOST BLK_WBT_SQ'
use experimental &&
	KERNEL_CONFIG+=' NR_CPUS==1;(?:RCU_NOCB_CPU|NO_HZ_FULL)'
use laptop && KERNEL_CONFIG+=' HZ_300'
use server && use !minimal2 && KERNEL_CONFIG+=' -NO_HZ_FULL'
use server || KERNEL_CONFIG+=' -SLUB_CPU_PARTIAL'

# this is anti-"rt" setting, but save power and compensate high HZ
# also it make this switch similar to Intel Clear Linux defaults
# anymore, it increase from-idle state, so affect mostly unstable workloads
use rt || KERNEL_CONFIG+=' RCU_EXPERT RCU_FAST_NO_HZ'
KERNEL_CONFIG+=' =IRQ_TIME_ACCOUNTING'
use rt || {
	KERNEL_CONFIG+=' HAVE_STATIC_CALL_INLINE==!y;HAVE_PREEMPT_DYNAMIC==!y;PREEMPT_RT==y;PREEMPT PREEMPT_DYNAMIC'
	ewarn "USE=rt2 new behaviour: PREEMPT with cmdline preempt=none/voluntary/full"
}