From: Martin Schwidefsky Date: Wed, 1 Oct 2014 08:44:40 +0000 (+0200) Subject: s390/vtime: do not reset idle data on CPU hotplug X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=a9b1649917f0d2058022eda06082f9d299a06354;p=deliverable%2Flinux.git 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 --- 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)); } /*