MIN_DELAY = 250,
MAX_DELAY = 250 * USEC_PER_MSEC,
- /*
- * Halve debts if total usage keeps staying under 25% w/o any shortages
- * for over 100ms.
- */
+ /* halve debts if total usage keeps staying under 25% for over 100ms */
DEBT_BUSY_USAGE_PCT = 25,
DEBT_REDUCTION_IDLE_DUR = 100 * USEC_PER_MSEC,
* sufficiently idle for a while, the debts are halved.
*/
static void ioc_forgive_debts(struct ioc *ioc, u64 usage_us_sum, int nr_debtors,
- int nr_shortages, struct ioc_now *now)
+ struct ioc_now *now)
{
- if (nr_shortages ||
+ if (ioc->busy_level < 0 ||
div64_u64(100 * usage_us_sum, now->now - ioc->period_at) >=
DEBT_BUSY_USAGE_PCT)
ioc->debt_busy_at = now->now;
list_for_each_entry_safe(iocg, tiocg, &surpluses, surplus_list)
list_del_init(&iocg->surplus_list);
- ioc_forgive_debts(ioc, usage_us_sum, nr_debtors, nr_shortages, &now);
-
/*
* If q is getting clogged or we're missing too much, we're issuing
* too much IO and should lower vtime rate. If we're not missing
ioc_refresh_params(ioc, false);
+ ioc_forgive_debts(ioc, usage_us_sum, nr_debtors, &now);
+
/*
* This period is done. Move onto the next one. If nothing's
* going on with the device, stop the timer.