sched/cputime: Fix steal time accounting vs. CPU hotplug

[pandora-kernel.git] / kernel / sched.c

diff --git a/kernel/sched.c b/kernel/sched.c
index a7a40b5..33ac1e3 100644 (file)
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -2084,6 +2084,19 @@ EXPORT_SYMBOL_GPL(account_system_vtime);
 
 #endif /* CONFIG_IRQ_TIME_ACCOUNTING */
 
+static inline void account_reset_rq(struct rq *rq)
+{
+#ifdef CONFIG_IRQ_TIME_ACCOUNTING
+       rq->prev_irq_time = 0;
+#endif
+#ifdef CONFIG_PARAVIRT
+       rq->prev_steal_time = 0;
+#endif
+#ifdef CONFIG_PARAVIRT_TIME_ACCOUNTING
+       rq->prev_steal_time_rq = 0;
+#endif
+}
+
 #ifdef CONFIG_PARAVIRT
 static inline u64 steal_ticks(u64 steal)
 {
@@ -6851,6 +6864,7 @@ migration_call(struct notifier_block *nfb, unsigned long action, void *hcpu)
 
        case CPU_UP_PREPARE:
                rq->calc_load_update = calc_load_update;
+               account_reset_rq(rq);
                break;
 
        case CPU_ONLINE: