Remove a redundant check for on_null_domain(cpu), and rerange the code
that make it more readable.
Signed-off-by: Alex Shi <alex....@intel.com>
---
kernel/sched/fair.c | 8 +++++---
1 files changed, 5 insertions(+), 3 deletions(-)
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 5bbc4bf..529092d 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -4934,11 +4934,13 @@ static inline int on_null_domain(int cpu)
void trigger_load_balance(struct rq *rq, int cpu)
{
/* Don't need to rebalance while attached to NULL domain */
- if (time_after_eq(jiffies, rq->next_balance) &&
- likely(!on_null_domain(cpu)))
+ if (unlikely(on_null_domain(cpu)))
+ return;
+
+ if (time_after_eq(jiffies, rq->next_balance))
raise_softirq(SCHED_SOFTIRQ);
#ifdef CONFIG_NO_HZ
- if (nohz_kick_needed(rq, cpu) && likely(!on_null_domain(cpu)))
+ if (nohz_kick_needed(rq, cpu))
nohz_balancer_kick(cpu);
#endif
}
--
1.7.5.4
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
