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authorPeter Williams <pwil3058@bigpond.net.au>2009-09-21 03:31:53 +0200
committerIngo Molnar <mingo@elte.hu>2009-09-21 09:53:55 +0200
commit0d721ceadbeaa24d7f9dd41b3e5e29912327a7e1 (patch)
tree54c0c8dc201122483bdd7e8975103b07f6afd34b /kernel/sched_idletask.c
parentsched: Fix potential NULL derference of doms_cur (diff)
downloadlinux-0d721ceadbeaa24d7f9dd41b3e5e29912327a7e1.tar.xz
linux-0d721ceadbeaa24d7f9dd41b3e5e29912327a7e1.zip
sched: Simplify sys_sched_rr_get_interval() system call
By removing the need for it to know details of scheduling classes. This allows PlugSched to define orthogonal scheduling classes. Signed-off-by: Peter Williams <pwil3058@bigpond.net.au> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> LKML-Reference: <06d1b89ee15a0eef82d7.1253496713@mudlark.pw.nest> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/sched_idletask.c')
-rw-r--r--kernel/sched_idletask.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/kernel/sched_idletask.c b/kernel/sched_idletask.c
index a8b448af004b..b133a28fcde3 100644
--- a/kernel/sched_idletask.c
+++ b/kernel/sched_idletask.c
@@ -97,6 +97,11 @@ static void prio_changed_idle(struct rq *rq, struct task_struct *p,
check_preempt_curr(rq, p, 0);
}
+unsigned int get_rr_interval_idle(struct task_struct *task)
+{
+ return 0;
+}
+
/*
* Simple, special scheduling class for the per-CPU idle tasks:
*/
@@ -122,6 +127,8 @@ static const struct sched_class idle_sched_class = {
.set_curr_task = set_curr_task_idle,
.task_tick = task_tick_idle,
+ .get_rr_interval = get_rr_interval_idle,
+
.prio_changed = prio_changed_idle,
.switched_to = switched_to_idle,