diff options
Diffstat (limited to 'sys/kern/kern_umtx.c')
| -rw-r--r-- | sys/kern/kern_umtx.c | 30 |
1 files changed, 17 insertions, 13 deletions
diff --git a/sys/kern/kern_umtx.c b/sys/kern/kern_umtx.c index 57ff74f5421e..092fcade9d19 100644 --- a/sys/kern/kern_umtx.c +++ b/sys/kern/kern_umtx.c @@ -2520,7 +2520,8 @@ do_lock_pp(struct thread *td, struct umutex *m, uint32_t flags, struct umtx_pi *pi; uint32_t ceiling; uint32_t owner, id; - int error, pri, old_inherited_pri, su, rv; + int error, pri, old_inherited_pri, new_pri, rv; + bool su; id = td->td_tid; uq = td->td_umtxq; @@ -2549,21 +2550,23 @@ do_lock_pp(struct thread *td, struct umutex *m, uint32_t flags, error = EINVAL; goto out; } + new_pri = PRI_MIN_REALTIME + ceiling; - mtx_lock(&umtx_lock); - if (UPRI(td) < PRI_MIN_REALTIME + ceiling) { - mtx_unlock(&umtx_lock); + if (td->td_base_user_pri < new_pri) { error = EINVAL; goto out; } - if (su && PRI_MIN_REALTIME + ceiling < uq->uq_inherited_pri) { - uq->uq_inherited_pri = PRI_MIN_REALTIME + ceiling; - thread_lock(td); - if (uq->uq_inherited_pri < UPRI(td)) - sched_lend_user_prio(td, uq->uq_inherited_pri); - thread_unlock(td); + if (su) { + mtx_lock(&umtx_lock); + if (new_pri < uq->uq_inherited_pri) { + uq->uq_inherited_pri = new_pri; + thread_lock(td); + if (new_pri < UPRI(td)) + sched_lend_user_prio(td, new_pri); + thread_unlock(td); + } + mtx_unlock(&umtx_lock); } - mtx_unlock(&umtx_lock); rv = casueword32(&m->m_owner, UMUTEX_CONTESTED, &owner, id | UMUTEX_CONTESTED); @@ -2684,7 +2687,8 @@ do_unlock_pp(struct thread *td, struct umutex *m, uint32_t flags, bool rb) struct umtx_q *uq, *uq2; struct umtx_pi *pi; uint32_t id, owner, rceiling; - int error, pri, new_inherited_pri, su; + int error, pri, new_inherited_pri; + bool su; id = td->td_tid; uq = td->td_umtxq; @@ -2739,7 +2743,7 @@ do_unlock_pp(struct thread *td, struct umutex *m, uint32_t flags, bool rb) error = EFAULT; else { mtx_lock(&umtx_lock); - if (su != 0) + if (su || new_inherited_pri == PRI_MAX) uq->uq_inherited_pri = new_inherited_pri; pri = PRI_MAX; TAILQ_FOREACH(pi, &uq->uq_pi_contested, pi_link) { |