* correct to instead guarantee mutual exclusion for the critical sections.
*/
-static pthread_mutex_t preempt_lock = PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP;
+static pthread_mutex_t preempt_lock;
+
+__attribute__((constructor))
+static void preempt_init(void) {
+ pthread_mutexattr_t attr;
+ pthread_mutexattr_init(&attr);
+ pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
+ pthread_mutex_init(&preempt_lock, &attr);
+ pthread_mutexattr_destroy(&attr);
+}
void preempt_disable(void)
{