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authorMartin Schwidefsky <schwidefsky@de.ibm.com>2014-10-01 10:44:40 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2014-10-09 09:13:58 +0200
commita9b1649917f0d2058022eda06082f9d299a06354 (patch)
tree245fbfb453c5e3626f598d6f37c09a1a74f135b4
parent5db8440c36a3308649b99f65b68195394dd7fed4 (diff)
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>
-rw-r--r--arch/s390/kernel/processor.c2
1 files changed, 0 insertions, 2 deletions
diff --git a/arch/s390/kernel/processor.c b/arch/s390/kernel/processor.c
index 24612029f450..32587cc76306 100644
--- a/arch/s390/kernel/processor.c
+++ b/arch/s390/kernel/processor.c
@@ -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));
}
/*