1 files changed, 36 insertions, 0 deletions
diff --git a/backport-include/linux/interrupt.h b/backport-include/linux/interrupt.h
new file mode 100644
index 0000000..f7e7134
--- /dev/null
+++ b/backport-include/linux/interrupt.h
@@ -0,0 +1,36 @@
+#ifndef _BP_LINUX_INTERRUPT_H
+#define _BP_LINUX_INTERRUPT_H
+#include <linux/version.h>
+#include_next <linux/interrupt.h>
+#include <linux/ktime.h>
+
+#if LINUX_VERSION_IS_LESS(4,10,0)
+
+/* Forward a hrtimer so it expires after now: */
+static inline u64
+backport_hrtimer_forward(struct hrtimer *timer, ktime_t now, s64 interval)
+{
+	ktime_t _interval = { .tv64 = interval };
+
+	return hrtimer_forward(timer, now, _interval);
+}
+#define hrtimer_forward LINUX_BACKPORT(hrtimer_forward)
+
+static inline s64 backport_ns_to_ktime(u64 ns)
+{
+	ktime_t _time = ns_to_ktime(ns);
+
+	return _time.tv64;
+}
+#define ns_to_ktime LINUX_BACKPORT(ns_to_ktime)
+
+static inline void backport_hrtimer_start(struct hrtimer *timer, s64 time,
+					  const enum hrtimer_mode mode)
+{
+	ktime_t _time = { .tv64 = time };
+	hrtimer_start(timer, _time, mode);
+}
+#define hrtimer_start LINUX_BACKPORT(hrtimer_start)
+#endif
+
+#endif /* _BP_LINUX_INTERRUPT_H */