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-rw-r--r--arch/s390/include/asm/cputime.h8
1 files changed, 7 insertions, 1 deletions
diff --git a/arch/s390/include/asm/cputime.h b/arch/s390/include/asm/cputime.h
index e5672d6276a6..9072bf63a846 100644
--- a/arch/s390/include/asm/cputime.h
+++ b/arch/s390/include/asm/cputime.h
@@ -8,6 +8,7 @@
#define _S390_CPUTIME_H
#include <linux/types.h>
+#include <asm/timex.h>
#define CPUTIME_PER_USEC 4096ULL
#define CPUTIME_PER_SEC (CPUTIME_PER_USEC * USEC_PER_SEC)
@@ -17,13 +18,18 @@
#define cmpxchg_cputime(ptr, old, new) cmpxchg64(ptr, old, new)
/*
- * Convert cputime to microseconds and back.
+ * Convert cputime to microseconds.
*/
static inline u64 cputime_to_usecs(const u64 cputime)
{
return cputime >> 12;
}
+/*
+ * Convert cputime to nanoseconds.
+ */
+#define cputime_to_nsecs(cputime) tod_to_ns(cputime)
+
u64 arch_cpu_idle_time(int cpu);
#define arch_idle_time(cpu) arch_cpu_idle_time(cpu)