Messages in this thread Patch in this message | | | From | Juri Lelli <> | Subject | [PATCH 3/4] locking/rtmutex: fix open coded check in rt_mutex_waiter_less() | Date | Wed, 2 Sep 2015 11:01:35 +0100 |
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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 <mingo@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Reported-by: Luca Abeni <luca.abeni@unitn.it> Signed-off-by: Juri Lelli <juri.lelli@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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