On Wed, 2012-12-05 at 17:05 +0100, Thomas Gleixner wrote:
> Dear RT Folks,
>
> I'm pleased to announce the 3.6.9-rt21 release. 3.6.7-rt18, 3.6.8-rt19
> and 3.6.9-rt20 are not announced updates to the respective 3.6.y
> stable releases without any RT changes
>
> Changes since 3.6.9-rt20:
>
> * Fix the PREEMPT_LAZY implementation on ARM
>
> * Fix the RCUTINY issues
>
> * Fix a long standing scheduler bug (See commit log of
> sched-enqueue-to-head.patch)
That last has an oversight buglet.
sched: add missing userspace->kernel struct sched_param.sched_priority inversion
Signed-off-by: Mike Galbraith <bitbuc...@online.de>
---
kernel/sched/core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -4624,7 +4624,7 @@ static int __sched_setscheduler(struct t
p->sched_reset_on_fork = reset_on_fork;
oldprio = p->prio;
- if (oldprio == param->sched_priority)
+ if (oldprio == (MAX_RT_PRIO - 1) - param->sched_priority)
goto out;
on_rq = p->on_rq;
--
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