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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2010-03-24 16:38:48 +0100
committerIngo Molnar <mingo@elte.hu>2010-04-02 20:12:05 +0200
commit371fd7e7a56a5c136d31aa980011bd2f131c3ef5 (patch)
treecf52014018e8258acd8bcfd486d855f098a02c03 /kernel/sched_rt.c
parentcc87f76a601d2d256118f7bab15e35254356ae21 (diff)
downloadop-kernel-dev-371fd7e7a56a5c136d31aa980011bd2f131c3ef5.zip
op-kernel-dev-371fd7e7a56a5c136d31aa980011bd2f131c3ef5.tar.gz
sched: Add enqueue/dequeue flags
In order to reduce the dependency on TASK_WAKING rework the enqueue interface to support a proper flags field. Replace the int wakeup, bool head arguments with an int flags argument and create the following flags: ENQUEUE_WAKEUP - the enqueue is a wakeup of a sleeping task, ENQUEUE_WAKING - the enqueue has relative vruntime due to having sched_class::task_waking() called, ENQUEUE_HEAD - the waking task should be places on the head of the priority queue (where appropriate). For symmetry also convert sched_class::dequeue() to a flags scheme. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/sched_rt.c')
-rw-r--r--kernel/sched_rt.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/kernel/sched_rt.c b/kernel/sched_rt.c
index fde895f..8afb953 100644
--- a/kernel/sched_rt.c
+++ b/kernel/sched_rt.c
@@ -888,20 +888,20 @@ static void dequeue_rt_entity(struct sched_rt_entity *rt_se)
* Adding/removing a task to/from a priority array:
*/
static void
-enqueue_task_rt(struct rq *rq, struct task_struct *p, int wakeup, bool head)
+enqueue_task_rt(struct rq *rq, struct task_struct *p, int flags)
{
struct sched_rt_entity *rt_se = &p->rt;
- if (wakeup)
+ if (flags & ENQUEUE_WAKEUP)
rt_se->timeout = 0;
- enqueue_rt_entity(rt_se, head);
+ enqueue_rt_entity(rt_se, flags & ENQUEUE_HEAD);
if (!task_current(rq, p) && p->rt.nr_cpus_allowed > 1)
enqueue_pushable_task(rq, p);
}
-static void dequeue_task_rt(struct rq *rq, struct task_struct *p, int sleep)
+static void dequeue_task_rt(struct rq *rq, struct task_struct *p, int flags)
{
struct sched_rt_entity *rt_se = &p->rt;
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