@@ -126,6 +126,8 @@
#define TRC_CSCHED_STOLEN_VCPU TRC_SCHED_CLASS_EVT(CSCHED, 4)
#define TRC_CSCHED_PICKED_CPU TRC_SCHED_CLASS_EVT(CSCHED, 5)
#define TRC_CSCHED_TICKLE TRC_SCHED_CLASS_EVT(CSCHED, 6)
+#define TRC_CSCHED_BOOST_START TRC_SCHED_CLASS_EVT(CSCHED, 7)
+#define TRC_CSCHED_BOOST_END TRC_SCHED_CLASS_EVT(CSCHED, 8)
/*
@@ -856,7 +858,11 @@ csched_vcpu_acct(struct csched_private *prv, unsigned int cpu)
* amount of CPU resources and should no longer be boosted.
*/
if ( svc->pri == CSCHED_PRI_TS_BOOST )
+ {
svc->pri = CSCHED_PRI_TS_UNDER;
+ TRACE_2D(TRC_CSCHED_BOOST_END, svc->sdom->dom->domain_id,
+ svc->vcpu->vcpu_id);
+ }
/*
* Update credits
@@ -1023,6 +1029,8 @@ csched_vcpu_wake(const struct scheduler *ops, struct vcpu *vc)
if ( svc->pri == CSCHED_PRI_TS_UNDER &&
!test_bit(CSCHED_FLAG_VCPU_PARKED, &svc->flags) )
{
+ TRACE_2D(TRC_CSCHED_BOOST_START, vc->domain->domain_id, vc->vcpu_id);
+ SCHED_STAT_CRANK(vcpu_boost);
svc->pri = CSCHED_PRI_TS_BOOST;
}
@@ -40,6 +40,7 @@ PERFCOUNTER(acct_reorder, "csched: acct_reorder")
PERFCOUNTER(acct_min_credit, "csched: acct_min_credit")
PERFCOUNTER(acct_vcpu_active, "csched: acct_vcpu_active")
PERFCOUNTER(acct_vcpu_idle, "csched: acct_vcpu_idle")
+PERFCOUNTER(vcpu_boost, "csched: vcpu_boost")
PERFCOUNTER(vcpu_park, "csched: vcpu_park")
PERFCOUNTER(vcpu_unpark, "csched: vcpu_unpark")
PERFCOUNTER(load_balance_idle, "csched: load_balance_idle")
Add tracepoints and a performance counter for boosting and unboosting in Credit1. Note that they (the trace points) do not cover the case of the idle vCPU being boosted to run a tasklet, as there already is TRC_CSCHED_SCHED_TASKLET for that. Signed-off-by: Dario Faggioli <dario.faggioli@citrix.com> --- Cc: George Dunlap <george.dunlap@eu.citrix.com> --- xen/common/sched_credit.c | 8 ++++++++ xen/include/xen/perfc_defn.h | 1 + 2 files changed, 9 insertions(+)