diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2011-07-17 20:46:52 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2012-03-01 10:46:54 +0100 |
| commit | 3c7d51843b03a6839e9ec7cda724e54d2319a63a (patch) | |
| tree | df8ac53451a7e519ddb0d349b24e6ba17ea18afb | |
| parent | 1c4dd99bed5f6f70932bf8dacdd54d04a2619778 (diff) | |
sched/rt: Do not submit new work when PI-blocked
When we are PI-blocked then we want to get things done ASAP.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/n/tip-vw8et3445km5b8mpihf4trae@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>
| -rw-r--r-- | include/linux/sched.h | 8 | ||||
| -rw-r--r-- | kernel/sched/core.c | 2 |
2 files changed, 9 insertions, 1 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index 03dd224d066..c628a915143 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -2082,12 +2082,20 @@ extern unsigned int sysctl_sched_cfs_bandwidth_slice; extern int rt_mutex_getprio(struct task_struct *p); extern void rt_mutex_setprio(struct task_struct *p, int prio); extern void rt_mutex_adjust_pi(struct task_struct *p); +static inline bool tsk_is_pi_blocked(struct task_struct *tsk) +{ + return tsk->pi_blocked_on != NULL; +} #else static inline int rt_mutex_getprio(struct task_struct *p) { return p->normal_prio; } # define rt_mutex_adjust_pi(p) do { } while (0) +static inline bool tsk_is_pi_blocked(struct task_struct *tsk) +{ + return false; +} #endif extern bool yield_to(struct task_struct *p, bool preempt); diff --git a/kernel/sched/core.c b/kernel/sched/core.c index c2bbdecaa27..25e06a5e048 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -3227,7 +3227,7 @@ need_resched: static inline void sched_submit_work(struct task_struct *tsk) { - if (!tsk->state) + if (!tsk->state || tsk_is_pi_blocked(tsk)) return; /* * If we are going to sleep and we have plugged IO queued, |