diff options
Diffstat (limited to 'arch/s390/kernel/idle.c')
| -rw-r--r-- | arch/s390/kernel/idle.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/arch/s390/kernel/idle.c b/arch/s390/kernel/idle.c index a5d4d80d6ede..812073ea073e 100644 --- a/arch/s390/kernel/idle.c +++ b/arch/s390/kernel/idle.c @@ -14,12 +14,36 @@ #include <linux/cpu.h> #include <linux/sched/cputime.h> #include <trace/events/power.h> +#include <asm/cpu_mf.h> #include <asm/nmi.h> #include <asm/smp.h> #include "entry.h" static DEFINE_PER_CPU(struct s390_idle_data, s390_idle); +void account_idle_time_irq(void) +{ + struct s390_idle_data *idle = this_cpu_ptr(&s390_idle); + u64 cycles_new[8]; + int i; + + clear_cpu_flag(CIF_ENABLED_WAIT); + if (smp_cpu_mtid) { + stcctm(MT_DIAG, smp_cpu_mtid, cycles_new); + for (i = 0; i < smp_cpu_mtid; i++) + this_cpu_add(mt_cycles[i], cycles_new[i] - idle->mt_cycles_enter[i]); + } + + idle->clock_idle_exit = S390_lowcore.int_clock; + idle->timer_idle_exit = S390_lowcore.sys_enter_timer; + + S390_lowcore.steal_timer += idle->clock_idle_enter - S390_lowcore.last_update_clock; + S390_lowcore.last_update_clock = idle->clock_idle_exit; + + S390_lowcore.system_timer += S390_lowcore.last_update_timer - idle->timer_idle_enter; + S390_lowcore.last_update_timer = idle->timer_idle_exit; +} + void arch_cpu_idle(void) { struct s390_idle_data *idle = this_cpu_ptr(&s390_idle); |