From: Ingo Molnar <mingo@elte.hu>
Date: Mon, 9 Jul 2007 16:51:58 +0000 (+0200)
Subject: sched: add cfs_rq ops
X-Git-Tag: v2.6.23-rc1~1260
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=138a8aeb5b9e5c5abd5e5ec22b6d1848e7e9c50b;p=linux-2.6

sched: add cfs_rq ops

add the set_task_cfs_rq() abstraction needed by CONFIG_FAIR_GROUP_SCHED.

(not activated yet)

Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

diff --git a/kernel/sched.c b/kernel/sched.c
index 0333abdda8..d9ed9274bf 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -449,6 +449,18 @@ static inline unsigned long long rq_clock(struct rq *rq)
 #define task_rq(p)		cpu_rq(task_cpu(p))
 #define cpu_curr(cpu)		(cpu_rq(cpu)->curr)
 
+#ifdef CONFIG_FAIR_GROUP_SCHED
+/* Change a task's ->cfs_rq if it moves across CPUs */
+static inline void set_task_cfs_rq(struct task_struct *p)
+{
+	p->se.cfs_rq = &task_rq(p)->cfs;
+}
+#else
+static inline void set_task_cfs_rq(struct task_struct *p)
+{
+}
+#endif
+
 #ifndef prepare_arch_switch
 # define prepare_arch_switch(next)	do { } while (0)
 #endif