while CONFIG_NO_HZ_COMMON is not enabled, gcc warn this:
kernel/sched/fair.c:8398:13: warning: ‘update_nohz_stats’ defined but not used
[-Wunused-function]
static bool update_nohz_stats(struct rq *rq)
^~~~~~~~~~~~~~~~~
Move update_nohz_stats() to #ifdef block fix this.
Signed-off-by: YueHaibing <yuehaib...@huawei.com>
---
kernel/sched/fair.c | 40 ++++++++++++++++++----------------------
1 file changed, 18 insertions(+), 22 deletions(-)
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 6d73bdbb2d40..c7a7ef97d167 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -8395,28 +8395,6 @@ group_type group_classify(unsigned int imbalance_pct,
return group_has_spare;
}
-static bool update_nohz_stats(struct rq *rq)
-{
-#ifdef CONFIG_NO_HZ_COMMON
- unsigned int cpu = rq->cpu;
-
- if (!rq->has_blocked_load)
- return false;
-
- if (!cpumask_test_cpu(cpu, nohz.idle_cpus_mask))
- return false;
-
- if (!time_after(jiffies, READ_ONCE(rq->last_blocked_load_update_tick)))
- return true;
-
- update_blocked_averages(cpu);
-
- return rq->has_blocked_load;
-#else
- return false;
-#endif
-}
-
/**
* update_sg_lb_stats - Update sched_group's statistics for load balancing.
* @env: The load balancing environment.
@@ -10097,6 +10075,24 @@ static inline int on_null_domain(struct rq *rq)
}
#ifdef CONFIG_NO_HZ_COMMON
+static bool update_nohz_stats(struct rq *rq)
+{
+ unsigned int cpu = rq->cpu;
+
+ if (!rq->has_blocked_load)
+ return false;
+
+ if (!cpumask_test_cpu(cpu, nohz.idle_cpus_mask))
+ return false;
+
+ if (!time_after(jiffies, READ_ONCE(rq->last_blocked_load_update_tick)))
+ return true;
+
+ update_blocked_averages(cpu);
+
+ return rq->has_blocked_load;
+}
+
/*
* idle load balancing details
* - When one of the busy CPUs notice that there may be an idle rebalancing
--
2.17.1
