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s390/vtime: do not reset idle data on CPU hotplug 

The sysfs attributes /sys/devices/system/cpu/cpu0/idle_count and
/sys/devices/system/cpu/cpu0/idle_time_us are reset to zero every
time a CPU is set online. The idle and iowait fields in /proc/stat
corresponding to idle_time_us are not reset. To make things
consistent do not reset the data for the sys attributes.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Martin Schwidefsky 2014-10-01 10:44:40 +02:00
parent 5db8440c36
commit a9b1649917
1 changed files with 0 additions and 2 deletions
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2
arch/s390/kernel/processor.c
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@ -23,7 +23,6 @@ static DEFINE_PER_CPU(struct cpuid, cpu_id);
*/
void cpu_init(void)
{
struct s390_idle_data *idle = &__get_cpu_var(s390_idle);
struct cpuid *id = &__get_cpu_var(cpu_id);
get_cpu_id(id);
@ -31,7 +30,6 @@ void cpu_init(void)
current->active_mm = &init_mm;
BUG_ON(current->mm);
enter_lazy_tlb(&init_mm, current);
memset(idle, 0, sizeof(*idle));
}
/*