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| author | Thomas Gleixner <tglx@linutronix.de> | 2010-01-20 20:58:57 +0000 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2010-01-22 18:09:59 +0100 |
| commit | ea87bb7853168434f4a82426dd1ea8421f9e604d (patch) | |
| tree | fcadec9b0fd1c57e4d1b625e2492c13c852972f1 /kernel/sched_fair.c | |
| parent | 7c9414385ebfdd87cc542d4e7e3bb0dbb2d3ce25 (diff) | |
| download | lwn-ea87bb7853168434f4a82426dd1ea8421f9e604d.tar.gz lwn-ea87bb7853168434f4a82426dd1ea8421f9e604d.zip | |
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.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c index 22231ccb2f98..0e7a7af9cf8b 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; |