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mtx: add debug assertions to mtx_spin_wait_unlocked

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This commit is contained in:
Mateusz Guzik 2018-02-20 20:39:34 +00:00
parent 499a9a917a
commit 500ca73d43
1 changed files with 8 additions and 0 deletions
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8
sys/kern/kern_mutex.c
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@ -1231,6 +1231,14 @@ mtx_spin_wait_unlocked(struct mtx *m)
{
struct lock_delay_arg lda;
KASSERT(m->mtx_lock != MTX_DESTROYED,
("%s() of destroyed mutex %p", __func__, m));
KASSERT(LOCK_CLASS(&m->lock_object) == &lock_class_mtx_spin,
("%s() of sleep mutex %p (%s)", __func__, m,
m->lock_object.lo_name));
KASSERT(!mtx_owned(m), ("%s() waiting on myself on lock %p (%s)", __func__, m,
m->lock_object.lo_name));
lda.spin_cnt = 0;
while (atomic_load_acq_ptr(&m->mtx_lock) != MTX_UNOWNED) {