Merge branches 'x86-fixes-for-linus', 'perf-fixes-for-linus' and 'sched-fixes-for...

[linux-beck.git] / arch / s390 / kernel / vtime.c

diff --git a/arch/s390/kernel/vtime.c b/arch/s390/kernel/vtime.c
index 3479f1b0d4e0d86f90ca5bb974bf09814dc1c987..7eff9b7347c00ff8a825624500f5713a04ccd79e 100644 (file)
--- a/arch/s390/kernel/vtime.c
+++ b/arch/s390/kernel/vtime.c
@@ -19,6 +19,7 @@
 #include <linux/kernel_stat.h>
 #include <linux/rcupdate.h>
 #include <linux/posix-timers.h>
+#include <linux/cpu.h>
 
 #include <asm/s390_ext.h>
 #include <asm/timer.h>
@@ -314,7 +315,8 @@ static void do_callbacks(struct list_head *cb_list)
 /*
  * Handler for the virtual CPU timer.
  */
-static void do_cpu_timer_interrupt(__u16 error_code)
+static void do_cpu_timer_interrupt(unsigned int ext_int_code,
+                                  unsigned int param32, unsigned long param64)
 {
        struct vtimer_queue *vq;
        struct vtimer_list *event, *tmp;
@@ -565,6 +567,23 @@ void init_cpu_vtimer(void)
        __ctl_set_bit(0,10);
 }
 
+static int __cpuinit s390_nohz_notify(struct notifier_block *self,
+                                     unsigned long action, void *hcpu)
+{
+       struct s390_idle_data *idle;
+       long cpu = (long) hcpu;
+
+       idle = &per_cpu(s390_idle, cpu);
+       switch (action) {
+       case CPU_DYING:
+       case CPU_DYING_FROZEN:
+               idle->nohz_delay = 0;
+       default:
+               break;
+       }
+       return NOTIFY_OK;
+}
+
 void __init vtime_init(void)
 {
        /* request the cpu timer external interrupt */
@@ -573,5 +592,6 @@ void __init vtime_init(void)
 
        /* Enable cpu timer interrupts on the boot cpu. */
        init_cpu_vtimer();
+       cpu_notifier(s390_nohz_notify, 0);
 }