[PATCH] sched/core: use list_is_singular in sched_can_stop_tick()

From	Geliang Tang <geliangtang@163.com>
Newsgroups	linux.kernel
Subject	[PATCH] sched/core: use list_is_singular in sched_can_stop_tick()
Date	2015-11-15 11:20 +0100
Message-ID	<qv2zF-8uV-17@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

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Use list_is_singular() to check if run_list has only one entry.

Signed-off-by: Geliang Tang <geliangtang@163.com>
---
 kernel/sched/core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 4d568ac..abb7c32 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -731,7 +731,7 @@ bool sched_can_stop_tick(void)
 	if (current->policy == SCHED_RR) {
 		struct sched_rt_entity *rt_se = &current->rt;
 
-		return rt_se->run_list.prev == rt_se->run_list.next;
+		return list_is_singular(&rt_se->run_list);
 	}
 
 	/*
-- 
2.5.0


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[PATCH] sched/core: use list_is_singular in sched_can_stop_tick() Geliang Tang <geliangtang@163.com> - 2015-11-15 11:20 +0100
  [tip:sched/core] sched/core: Use list_is_singular()   in sched_can_stop_tick() tip-bot for Geliang Tang <tipbot@zytor.com> - 2015-11-23 17:30 +0100

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