diff options
Diffstat (limited to 'arch/s390/kernel/process.c')
| -rw-r--r-- | arch/s390/kernel/process.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c index 96492cf2d49..29f7884b4ff 100644 --- a/arch/s390/kernel/process.c +++ b/arch/s390/kernel/process.c @@ -92,6 +92,7 @@ EXPORT_SYMBOL(unregister_idle_notifier); void do_monitor_call(struct pt_regs *regs, long interruption_code) { +#ifdef CONFIG_SMP struct s390_idle_data *idle; idle = &__get_cpu_var(s390_idle); @@ -99,7 +100,7 @@ void do_monitor_call(struct pt_regs *regs, long interruption_code) idle->idle_time += get_clock() - idle->idle_enter; idle->in_idle = 0; spin_unlock(&idle->lock); - +#endif /* disable monitor call class 0 */ __ctl_clear_bit(8, 15); @@ -114,7 +115,9 @@ extern void s390_handle_mcck(void); static void default_idle(void) { int cpu, rc; +#ifdef CONFIG_SMP struct s390_idle_data *idle; +#endif /* CPU is going idle. */ cpu = smp_processor_id(); @@ -151,13 +154,14 @@ static void default_idle(void) s390_handle_mcck(); return; } - +#ifdef CONFIG_SMP idle = &__get_cpu_var(s390_idle); spin_lock(&idle->lock); idle->idle_count++; idle->in_idle = 1; idle->idle_enter = get_clock(); spin_unlock(&idle->lock); +#endif trace_hardirqs_on(); /* Wait for external, I/O or machine check interrupt. */ __load_psw_mask(psw_kernel_bits | PSW_MASK_WAIT | |