Commit a9b16499 authored Oct 01, 2014 by Martin Schwidefsky

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>

parent 5db8440c

arch/s390/kernel/processor.c

+0 −2

Original line number	Diff line number	Diff line
		@@ -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));
		}

		/*