bitkeeper revision 1.363 (3f171a51lxF2ZLdi2G16l31zvS1aNQ)

xen_kbd.c, schedule.c, network.c:
  More cleanups.

xen/common/network.c

@@ -259,8 +259,11 @@ int vif_getinfo(vif_getinfo_t *info)
 
     vif = p->net_vif_list[info->vif];
 
-    if(vif == NULL)
+    if ( vif == NULL )
+    {
+        put_task_struct(p);
         return -ENOSYS;
+    }
 
     info->total_bytes_sent              = vif->total_bytes_sent;
     info->total_bytes_received          = vif->total_bytes_received;

xen/common/schedule.c

@@ -225,14 +225,15 @@ long sched_adjdom(int dom, unsigned long mcu_adv, unsigned long warp,
            dom, mcu_adv, warp, warpl, warpu);
 
     p = find_domain_by_id(dom);
-    if ( p == NULL ) return -ESRCH;
+    if ( p == NULL ) 
+        return -ESRCH;
 
     spin_lock_irq(&schedule_data[p->processor].lock);   
-
     p->mcu_advance = mcu_adv;
-
     spin_unlock_irq(&schedule_data[p->processor].lock); 
 
+    put_task_struct(p);
+
     return 0;
 }
 
@@ -569,11 +570,9 @@ void __init scheduler_init(void)
 void schedulers_start(void) 
 {   
     printk("Start schedulers\n");
-    __cli();
     sched_timer(0);
     virt_timer(0);
     smp_call_function((void *)sched_timer, NULL, 1, 1);
-    __sti();
 }
 
 

xen/drivers/char/xen_kbd.c

@@ -185,12 +185,13 @@ static void keyboard_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 {
     unsigned char status, scancode;
     unsigned int work = 1000;
-    unsigned long cpu_mask, flags;
+    unsigned long cpu_mask = 0, flags;
+    struct task_struct *p = CONSOLE_OWNER;
 
     spin_lock_irqsave(&kbd_lock, flags);
 
     while ( (--work > 0) && ((status = kbd_read_status()) & KBD_STAT_OBF) )
-    {      
+    {
         scancode = kbd_read_input();
       
 #ifdef CONFIG_XEN_ATTENTION_KEY
@@ -214,15 +215,23 @@ static void keyboard_interrupt(int irq, void *dev_id, struct pt_regs *regs)
         }
 #endif
       
-        kbd_ring_push(status, scancode);
-        cpu_mask = mark_guest_event(CONSOLE_OWNER, _EVENT_KBD);
-        guest_event_notify(cpu_mask);
+        if ( p != NULL )
+        {
+            kbd_ring_push(status, scancode);
+            cpu_mask |= mark_guest_event(CONSOLE_OWNER, _EVENT_KBD);
+        }
     }
     
     if ( !work )
         printk(KERN_ERR "xen_keyb: controller jammed (0x%02X).\n", status);
 
     spin_unlock_irqrestore(&kbd_lock, flags);
+
+    if ( p != NULL )
+    {
+        put_task_struct(p);
+        guest_event_notify(cpu_mask);
+    }    
 }