sched_wakeup_thread(): memory barrier after status update

2016-12-31 10:44:13 +09:00
parent 393cec513c
commit 21df56b233
2 changed files with 2 additions and 0 deletions
--- a/kernel/process.c
+++ b/kernel/process.c
@ -2861,6 +2861,7 @@ sched_wakeup_thread(struct thread *thread, int valid_states)
 			proc->status = PS_RUNNING;
 		mcs_rwlock_writer_unlock_noirq(&proc->update_lock, &updatelock);
 		xchg4((int *)(&thread->status), PS_RUNNING);
+		barrier();
 		status = 0;
 	}
 	else {