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authorThomas Gleixner <tglx@linutronix.de>2010-01-20 20:58:57 +0000
committerThomas Gleixner <tglx@linutronix.de>2010-01-22 18:09:59 +0100
commitea87bb7853168434f4a82426dd1ea8421f9e604d (patch)
treefcadec9b0fd1c57e4d1b625e2492c13c852972f1 /kernel/sched_fair.c
parent7c9414385ebfdd87cc542d4e7e3bb0dbb2d3ce25 (diff)
downloadop-kernel-dev-ea87bb7853168434f4a82426dd1ea8421f9e604d.zip
op-kernel-dev-ea87bb7853168434f4a82426dd1ea8421f9e604d.tar.gz
sched: Extend enqueue_task to allow head queueing
The ability of enqueueing a task to the head of a SCHED_FIFO priority list is required to fix some violations of POSIX scheduling policy. Extend the related functions with a "head" argument. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra <peterz@infradead.org> Tested-by: Carsten Emde <cbe@osadl.org> Tested-by: Mathias Weber <mathias.weber.mw1@roche.com> LKML-Reference: <20100120171629.734886007@linutronix.de>
Diffstat (limited to 'kernel/sched_fair.c')
-rw-r--r--kernel/sched_fair.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
index 22231cc..0e7a7af 100644
--- a/kernel/sched_fair.c
+++ b/kernel/sched_fair.c
@@ -1053,7 +1053,8 @@ static inline void hrtick_update(struct rq *rq)
* increased. Here we update the fair scheduling stats and
* then put the task into the rbtree:
*/
-static void enqueue_task_fair(struct rq *rq, struct task_struct *p, int wakeup)
+static void
+enqueue_task_fair(struct rq *rq, struct task_struct *p, int wakeup, bool head)
{
struct cfs_rq *cfs_rq;
struct sched_entity *se = &p->se;
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