Messages in this thread Patch in this message | | | From | Zqiang <> | Subject | [PATCH] rtmutex: Fix incorrect usage of rt_mutex_waiter_is_top_waiter() | Date | Wed, 15 Dec 2021 15:01:51 +0800 |
| |
The condition for exiting spin is that the rt_mutex_waiter_is_top_waiter() return false rather than return true.
Fixes: c3123c431447 ("locking/rtmutex: Dont dereference waiter lockless") Signed-off-by: Zqiang <qiang1.zhang@intel.com> --- kernel/locking/rtmutex.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/locking/rtmutex.c b/kernel/locking/rtmutex.c index 0c1f2e3f019a..8555c4efe97c 100644 --- a/kernel/locking/rtmutex.c +++ b/kernel/locking/rtmutex.c @@ -1383,7 +1383,7 @@ static bool rtmutex_spin_on_owner(struct rt_mutex_base *lock, * - the VCPU on which owner runs is preempted */ if (!owner_on_cpu(owner) || need_resched() || - rt_mutex_waiter_is_top_waiter(lock, waiter)) { + !rt_mutex_waiter_is_top_waiter(lock, waiter)) { res = false; break; } -- 2.25.1
| |