Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / kernel / time / timekeeping_internal.h

diff --git a/kernel/kernel/time/timekeeping_internal.h b/kernel/kernel/time/timekeeping_internal.h
new file mode 100644 (file)
index 0000000..4ea005a
--- /dev/null
+++ b/kernel/kernel/time/timekeeping_internal.h
@@ -0,0 +1,29 @@
+#ifndef _TIMEKEEPING_INTERNAL_H
+#define _TIMEKEEPING_INTERNAL_H
+/*
+ * timekeeping debug functions
+ */
+#include <linux/clocksource.h>
+#include <linux/time.h>
+
+#ifdef CONFIG_DEBUG_FS
+extern void tk_debug_account_sleep_time(struct timespec64 *t);
+#else
+#define tk_debug_account_sleep_time(x)
+#endif
+
+#ifdef CONFIG_CLOCKSOURCE_VALIDATE_LAST_CYCLE
+static inline cycle_t clocksource_delta(cycle_t now, cycle_t last, cycle_t mask)
+{
+       cycle_t ret = (now - last) & mask;
+
+       return (s64) ret > 0 ? ret : 0;
+}
+#else
+static inline cycle_t clocksource_delta(cycle_t now, cycle_t last, cycle_t mask)
+{
+       return (now - last) & mask;
+}
+#endif
+
+#endif /* _TIMEKEEPING_INTERNAL_H */