1 files changed, 5 insertions, 4 deletions
diff --git a/proc.c b/proc.c
index b009892..808a15e 100644
--- a/proc.c
+++ b/proc.c
@@ -179,7 +179,6 @@ userinit(void)
 }
 
 // Return currently running process.
-// XXX comment better
 struct proc*
 curproc(void)
 {
@@ -206,11 +205,13 @@ scheduler(void)
   struct cpu *c;
   int i;
 
+  c = &cpus[cpu()];
   for(;;){
+    // Enable interrupts on this processor.
+    sti();
+
     // Loop over process table looking for process to run.
     acquire(&proc_table_lock);
-    
-    c = &cpus[cpu()];
     for(i = 0; i < NPROC; i++){
       p = &proc[i];
       if(p->state != RUNNABLE)
@@ -229,8 +230,8 @@ scheduler(void)
       c->curproc = 0;
       setupsegs(0);
     }
-
     release(&proc_table_lock);
+
   }
 }