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| author | Juri Lelli <juri.lelli@arm.com> | 2015-09-02 11:01:35 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-09-23 09:51:25 +0200 |
| commit | f52405757e4e9bddd868d6b8ca501d58f292969f (patch) | |
| tree | 7d156d27fa8bee40fe88a0b520e06ccbe0e117de /kernel/locking/rtmutex.c | |
| parent | 2726d6ce389788c7fe724961a6e1bfe569560088 (diff) | |
| download | lwn-f52405757e4e9bddd868d6b8ca501d58f292969f.tar.gz lwn-f52405757e4e9bddd868d6b8ca501d58f292969f.zip | |
sched/deadline, locking/rtmutex: Fix open coded check in rt_mutex_waiter_less()
rt_mutex_waiter_less() check of task deadlines is open coded. Since this
is subject to wraparound bugs, make it use the correct helper.
Reported-by: Luca Abeni <luca.abeni@unitn.it>
Signed-off-by: Juri Lelli <juri.lelli@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1441188096-23021-4-git-send-email-juri.lelli@arm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/locking/rtmutex.c')
| -rw-r--r-- | kernel/locking/rtmutex.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/locking/rtmutex.c b/kernel/locking/rtmutex.c index 7781d801212f..35e9bfcc6ad9 100644 --- a/kernel/locking/rtmutex.c +++ b/kernel/locking/rtmutex.c @@ -158,7 +158,8 @@ rt_mutex_waiter_less(struct rt_mutex_waiter *left, * then right waiter has a dl_prio() too. */ if (dl_prio(left->prio)) - return (left->task->dl.deadline < right->task->dl.deadline); + return dl_time_before(left->task->dl.deadline, + right->task->dl.deadline); return 0; } |