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Date: Wed, 2 Sep 2015 11:01:35 +0100 From: Juri Lelli <juri.lelli@....com> To: peterz@...radead.org, mingo@...hat.com Cc: linux-kernel@...r.kernel.org, juri.lelli@....com Subject: [PATCH 3/4] locking/rtmutex: fix open coded check in rt_mutex_waiter_less() 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@...hat.com> Cc: Peter Zijlstra <peterz@...radead.org> Reported-by: Luca Abeni <luca.abeni@...tn.it> Signed-off-by: Juri Lelli <juri.lelli@....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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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