Merge git://git.infradead.org/iommu-2.6

[deliverable/linux.git] / arch / s390 / include / asm / cputime.h

diff --git a/arch/s390/include/asm/cputime.h b/arch/s390/include/asm/cputime.h
index 941384fbd39c503b79bd9ebdebe3ef35772a6e7e..7a3817a656df721a9e85f2104c7c0e374358b3ee 100644 (file)
--- a/arch/s390/include/asm/cputime.h
+++ b/arch/s390/include/asm/cputime.h
@@ -9,6 +9,9 @@
 #ifndef _S390_CPUTIME_H
 #define _S390_CPUTIME_H
 
+#include <linux/types.h>
+#include <linux/percpu.h>
+#include <linux/spinlock.h>
 #include <asm/div64.h>
 
 /* We want to use full resolution of the CPU timer: 2**-12 micro-seconds. */
@@ -174,8 +177,24 @@ cputime64_to_clock_t(cputime64_t cputime)
        return __div(cputime, 4096000000ULL / USER_HZ);
 }
 
+struct s390_idle_data {
+       unsigned int sequence;
+       unsigned long long idle_count;
+       unsigned long long idle_enter;
+       unsigned long long idle_time;
+};
+
+DECLARE_PER_CPU(struct s390_idle_data, s390_idle);
+
+void vtime_start_cpu(void);
 cputime64_t s390_get_idle_time(int cpu);
 
 #define arch_idle_time(cpu) s390_get_idle_time(cpu)
 
+static inline void s390_idle_check(void)
+{
+       if ((&__get_cpu_var(s390_idle))->idle_enter != 0ULL)
+               vtime_start_cpu();
+}
+
 #endif /* _S390_CPUTIME_H */