it's not clear that the release will always enable interrupts

2019-07-19 13:27:48 -04:00 · 2019-07-19 13:27:48 -04:00 · 2418ac380c
parent dbd729b32d
commit 2418ac380c
1 changed files with 3 additions and 3 deletions
--- a/kernel/proc.c
+++ b/kernel/proc.c
@ -418,12 +418,12 @@ scheduler(void)
 {
  struct proc *p;
  struct cpu *c = mycpu();
-
-  // Let devices interrupt when no lock is held.
-  intr_on();
  
  c->proc = 0;
  for(;;){
+    // Let devices interrupt when no lock is held.
+    intr_on();
+
    for(p = proc; p < &proc[NPROC]; p++) {
      acquire(&p->lock);
      if(p->state == RUNNABLE) {