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Diffstat (limited to 'arch/s390/include/asm/timex.h')
-rw-r--r--arch/s390/include/asm/timex.h18
1 files changed, 18 insertions, 0 deletions
diff --git a/arch/s390/include/asm/timex.h b/arch/s390/include/asm/timex.h
index 09d345a701d..335afc057d3 100644
--- a/arch/s390/include/asm/timex.h
+++ b/arch/s390/include/asm/timex.h
@@ -11,6 +11,8 @@
#ifndef _ASM_S390_TIMEX_H
#define _ASM_S390_TIMEX_H
+#include <asm/lowcore.h>
+
/* The value of the TOD clock for 1.1.1970. */
#define TOD_UNIX_EPOCH 0x7d91048bca000000ULL
@@ -49,6 +51,22 @@ static inline void store_clock_comparator(__u64 *time)
asm volatile("stckc %0" : "=Q" (*time));
}
+void clock_comparator_work(void);
+
+static inline unsigned long long local_tick_disable(void)
+{
+ unsigned long long old;
+
+ old = S390_lowcore.clock_comparator;
+ S390_lowcore.clock_comparator = -1ULL;
+ return old;
+}
+
+static inline void local_tick_enable(unsigned long long comp)
+{
+ S390_lowcore.clock_comparator = comp;
+}
+
#define CLOCK_TICK_RATE 1193180 /* Underlying HZ */
typedef unsigned long long cycles_t;