bool
mutex_obj_free(kmutex_t *lock)
{
struct kmutexobj *mo = (struct kmutexobj *)lock;
if (atomic_dec_uint_nv(&mo->mo_refcnt) > 0) {
return false;
}
mutex_destroy(&mo->mo_lock);
kmem_free(mo, sizeof(*mo));
return true;
}
void
kcpuset_unuse(kcpuset_t *c, kcpuset_t **lst)
{
if (atomic_dec_uint_nv(&c->nused) != 0)
return;
KASSERT(c->nused == 0);
KASSERT(c->next == NULL);
if (lst == NULL) {
kcpuset_destroy(c);
return;
}
c->next = *lst;
*lst = c;
}
/*
* mutex_obj_free:
*
* Drop a reference from a lock object. If the last reference is being
* dropped, free the object and return true. Otherwise, return false.
*/
bool
mutex_obj_free(kmutex_t *lock)
{
struct kmutexobj *mo = (struct kmutexobj *)lock;
KASSERTMSG(mo->mo_magic == MUTEX_OBJ_MAGIC,
"%s: lock %p: mo->mo_magic (%#x) != MUTEX_OBJ_MAGIC (%#x)",
__func__, mo, mo->mo_magic, MUTEX_OBJ_MAGIC);
KASSERTMSG(mo->mo_refcnt > 0,
"%s: lock %p: mo->mo_refcnt (%#x) == 0",
__func__, mo, mo->mo_refcnt);
if (atomic_dec_uint_nv(&mo->mo_refcnt) > 0) {
return false;
}
mutex_destroy(&mo->mo_lock);
pool_cache_put(mutex_obj_cache, mo);
return true;
}
/*
* This is normally called via the rxb's freefunc, when an mblk referencing the
* rxb is freed.
*/
void
rxbuf_free(struct rxbuf *rxb)
{
if (atomic_dec_uint_nv(&rxb->ref_cnt) == 0)
kmem_cache_free(rxb->cache, rxb);
}
