From: Christopher Lalancette <clalance@redhat.com>
Date: Wed, 4 Nov 2009 08:11:39 -0500
Subject: [xen] crank the correct stat in the scheduler
Message-id: <4AF1373B.30008@redhat.com>
Patchwork-id: 21307
O-Subject: [RHEL5.5 PATCH 2/3]: Crank the correct stat in the scheduler
Bugzilla: 529271
RH-Acked-by: Don Dutile <ddutile@redhat.com>
RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
RH-Acked-by: Justin M. Forbes <jforbes@redhat.com>
RH-Acked-by: Rik van Riel <riel@redhat.com>

The hard-virt patches that went into 5.4 added some new statistics for the
real-time priority class.  Unfortunately, we were cranking the wrong stat during
real-time load-balancing.  Crank the correct statistic here.

This helps to solve BZ 529271

diff --git a/common/sched_credit.c b/common/sched_credit.c
index adf4515..c3a98bf 100644
--- a/common/sched_credit.c
+++ b/common/sched_credit.c
@@ -1593,7 +1593,7 @@ csched_rr_load_balance(int cpu, struct csched_vcpu *snext)
 
         if ( !spin_trylock(&per_cpu(schedule_data, peer_cpu).schedule_lock) )
         {
-            CSCHED_STAT_CRANK(steal_trylock_failed);
+            CSCHED_STAT_CRANK(rt_steal_trylock_failed);
             lock_failure_flag = 1;
             continue;
         }