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-rw-r--r--backport-include/linux/timekeeping.h38
1 files changed, 38 insertions, 0 deletions
diff --git a/backport-include/linux/timekeeping.h b/backport-include/linux/timekeeping.h
new file mode 100644
index 0000000..b683d12
--- /dev/null
+++ b/backport-include/linux/timekeeping.h
@@ -0,0 +1,38 @@
+#ifndef __BACKPORT_TIMKEEPING_H
+#define __BACKPORT_TIMKEEPING_H
+#include <linux/version.h>
+#include <linux/types.h>
+
+#if LINUX_VERSION_IS_GEQ(3,17,0)
+#include_next <linux/timekeeping.h>
+#endif
+
+#if LINUX_VERSION_IS_LESS(3,17,0)
+#define ktime_get_ns LINUX_BACKPORT(ktime_get_ns)
+extern ktime_t ktime_get(void);
+#define ktime_get_ns LINUX_BACKPORT(ktime_get_ns)
+static inline u64 ktime_get_ns(void)
+{
+ return ktime_to_ns(ktime_get());
+}
+
+extern ktime_t ktime_get_boottime(void);
+#define ktime_get_boot_ns LINUX_BACKPORT(ktime_get_boot_ns)
+static inline u64 ktime_get_boot_ns(void)
+{
+ return ktime_to_ns(ktime_get_boottime());
+}
+#endif /* < 3.17 */
+
+#if LINUX_VERSION_IS_LESS(3,19,0)
+static inline time64_t ktime_get_seconds(void)
+{
+ struct timespec t;
+
+ ktime_get_ts(&t);
+
+ return t.tv_sec;
+}
+#endif
+
+#endif /* __BACKPORT_TIMKEEPING_H */