diff options
Diffstat (limited to 'crypto/threads_pthread.c')
| -rw-r--r-- | crypto/threads_pthread.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/crypto/threads_pthread.c b/crypto/threads_pthread.c index 44d6ebe09231..ace2dc499061 100644 --- a/crypto/threads_pthread.c +++ b/crypto/threads_pthread.c @@ -62,8 +62,10 @@ __tsan_mutex_post_lock((x), 0, 0) /* * The Non-Stop KLT thread model currently seems broken in its rwlock * implementation + * Likewise is there a problem with the glibc implementation on riscv. */ -# if defined(PTHREAD_RWLOCK_INITIALIZER) && !defined(_KLT_MODEL_) +# if defined(PTHREAD_RWLOCK_INITIALIZER) && !defined(_KLT_MODEL_) \ + && !defined(__riscv) # define USE_RWLOCK # endif @@ -279,7 +281,7 @@ static struct rcu_qp *get_hold_current_qp(struct rcu_lock_st *lock) /* if the idx hasn't changed, we're good, else try again */ if (qp_idx == ATOMIC_LOAD_N(uint32_t, &lock->reader_idx, - __ATOMIC_RELAXED)) + __ATOMIC_ACQUIRE)) break; ATOMIC_SUB_FETCH(&lock->qp_group[qp_idx].users, (uint64_t)1, @@ -403,8 +405,12 @@ static struct rcu_qp *update_qp(CRYPTO_RCU_LOCK *lock, uint32_t *curr_id) *curr_id = lock->id_ctr; lock->id_ctr++; + /* + * make the current state of everything visible by this release + * when get_hold_current_qp acquires the next qp + */ ATOMIC_STORE_N(uint32_t, &lock->reader_idx, lock->current_alloc_idx, - __ATOMIC_RELAXED); + __ATOMIC_RELEASE); /* * this should make sure that the new value of reader_idx is visible in |