linux-kernel - [RFC 27/60] cosched: Add some small helper functions for later use

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Message-Id: <20180907214047.26914-28-jschoenh@amazon.de>
Date:   Fri,  7 Sep 2018 23:40:14 +0200
From:   Jan H. Schönherr <jschoenh@...zon.de>
To:     Ingo Molnar <mingo@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>
Cc:     Jan H. Schönherr <jschoenh@...zon.de>,
        linux-kernel@...r.kernel.org
Subject: [RFC 27/60] cosched: Add some small helper functions for later use

Signed-off-by: Jan H. Schönherr <jschoenh@...zon.de>
---
 kernel/sched/sched.h | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
index d65c98c34c13..456b266b8a2c 100644
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h
@@ -1130,6 +1130,40 @@ static inline struct cfs_rq *taskgroup_next_cfsrq(struct task_group *tg,
 #endif /* CONFIG_FAIR_GROUP_SCHED */
 
 #ifdef CONFIG_COSCHEDULING
+static inline int node_of(struct rq *rq)
+{
+	return rq->sdrq_data.numa_node;
+}
+
+static inline bool is_cpu_rq(struct rq *rq)
+{
+	return !rq->sdrq_data.level;
+}
+
+static inline struct rq *parent_rq(struct rq *rq)
+{
+	if (!rq->sdrq_data.parent)
+		return NULL;
+	return container_of(rq->sdrq_data.parent, struct rq, sdrq_data);
+}
+#else /* !CONFIG_COSCHEDULING */
+static inline int node_of(struct rq *rq)
+{
+	return cpu_to_node(cpu_of(rq));
+}
+
+static inline bool is_cpu_rq(struct rq *rq)
+{
+	return true;
+}
+
+static inline struct rq *parent_rq(struct rq *rq)
+{
+	return NULL;
+}
+#endif /* !CONFIG_COSCHEDULING */
+
+#ifdef CONFIG_COSCHEDULING
 void cosched_init_bottom(void);
 void cosched_init_topology(void);
 void cosched_init_hierarchy(void);
-- 
2.9.3.1.gcba166c.dirty