From ffc342fbb060cd753fc3a5f6fb6f550dd29a2637 Mon Sep 17 00:00:00 2001 From: Juergen Gross Date: Tue, 2 Feb 2016 14:03:40 +0100 Subject: [PATCH] credit: recalculate per-cpupool credits when updating timeslice When modifying the timeslice of the credit scheduler in a cpupool the cpupool global credit value (n_cpus * credits_per_tslice) isn't recalculated. This will lead to wrong scheduling decisions later. Do the recalculation when updating the timeslice. Signed-off-by: Juergen Gross Tested-by: Alan.Robinson Reviewed-by: Dario Faggioli --- xen/common/sched_credit.c | 1 + 1 file changed, 1 insertion(+) diff --git a/xen/common/sched_credit.c b/xen/common/sched_credit.c index 8fbbd54637..671bbee021 100644 --- a/xen/common/sched_credit.c +++ b/xen/common/sched_credit.c @@ -1092,6 +1092,7 @@ __csched_set_tslice(struct csched_private *prv, unsigned timeslice) prv->ticks_per_tslice = 1; prv->tick_period_us = prv->tslice_ms * 1000 / prv->ticks_per_tslice; prv->credits_per_tslice = CSCHED_CREDITS_PER_MSEC * prv->tslice_ms; + prv->credit = prv->credits_per_tslice * prv->ncpus; } static int -- 2.39.5