ioc_refresh_period_us

Name:latency Qos params changed, update period_us and all the dependent params

Proto:static void ioc_refresh_period_us(struct ioc *ioc)

Type:void

Parameter:

Type	Parameter	Name
struct ioc *	ioc

686

lockdep_assert_held( & lock)

689

If qos[QOS_RLAT] >= qos[QOS_WLAT] Then

690

ppm = qos[QOS_RPPM]

691

lat = qos[QOS_RLAT]

692

Else

693

ppm = qos[QOS_WPPM]

694

lat = qos[QOS_WLAT]

705

If ppm Then multi = max_t - return maximum of two values, using the specified type*@type: data type to use*@x: first value*@y: second value(u32, (MILLION - ppm) / 50000, 2)

707

Else multi = 2

709

period_us = multi * lat

710

period_us = clamp_t - return a value clamped to a given range using a given type*@type: the type of variable to use*@val: current value*@lo: minimum allowable value*@hi: maximum allowable value* This macro does no typechecking and uses temporary variables of type(u32, period_us, MIN_PERIOD, MAX_PERIOD)

713

period_us = period_us

714

margin_us = period_us * MARGIN_PCT / 100

715

inuse_margin_vtime = DIV64_U64_ROUND_UP(period_us * VTIME_PER_USEC * INUSE_MARGIN_PCT, 100)

**Caller**
Name	Describe
ioc_refresh_params

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