rt_mutex_waiter_less() check of tasks deadlines is open coded. Since this
is subject to wraparound issues, make it use the correct helper.
Cc: Ingo Molnar <mi...@redhat.com>
Cc: Peter Zijlstra <pet...@infradead.org>
Reported-by: Luca Abeni <luca.ab...@unitn.it>
Signed-off-by: Juri Lelli <juri.le...@arm.com>
---
kernel/locking/rtmutex.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/kernel/locking/rtmutex.c b/kernel/locking/rtmutex.c
index 5674b07..74e072f 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;
}
--
2.2.2
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