1 files changed, 91 insertions, 0 deletions
diff --git a/c_src/include/linux/jiffies.h b/c_src/include/linux/jiffies.h
new file mode 100644
index 00000000..d16ea76f
--- /dev/null
+++ b/c_src/include/linux/jiffies.h
@@ -0,0 +1,91 @@
+#ifndef _LINUX_JIFFIES_H
+#define _LINUX_JIFFIES_H
+
+#include <time.h>
+#include <linux/kernel.h>
+#include <linux/time64.h>
+#include <linux/typecheck.h>
+#include <linux/types.h>
+
+#define time_after(a,b)		\
+	(typecheck(unsigned long, a) && \
+	 typecheck(unsigned long, b) && \
+	 ((long)((b) - (a)) < 0))
+#define time_before(a,b)	time_after(b,a)
+
+#define time_after_eq(a,b)	\
+	(typecheck(unsigned long, a) && \
+	 typecheck(unsigned long, b) && \
+	 ((long)((a) - (b)) >= 0))
+#define time_before_eq(a,b)	time_after_eq(b,a)
+
+#define time_in_range(a,b,c) \
+	(time_after_eq(a,b) && \
+	 time_before_eq(a,c))
+
+#define time_in_range_open(a,b,c) \
+	(time_after_eq(a,b) && \
+	 time_before(a,c))
+
+#define time_after64(a,b)	\
+	(typecheck(__u64, a) &&	\
+	 typecheck(__u64, b) && \
+	 ((__s64)((b) - (a)) < 0))
+#define time_before64(a,b)	time_after64(b,a)
+
+#define time_after_eq64(a,b)	\
+	(typecheck(__u64, a) && \
+	 typecheck(__u64, b) && \
+	 ((__s64)((a) - (b)) >= 0))
+#define time_before_eq64(a,b)	time_after_eq64(b,a)
+
+#define time_in_range64(a, b, c) \
+	(time_after_eq64(a, b) && \
+	 time_before_eq64(a, c))
+
+#define time_is_before_jiffies(a) time_after(jiffies, a)
+
+#define HZ		1000
+
+static inline u64 jiffies_to_nsecs(const unsigned long j)
+{
+	return (u64)j * NSEC_PER_MSEC;
+}
+
+static inline unsigned jiffies_to_msecs(const unsigned long j)
+{
+	return j;
+}
+
+static inline unsigned long msecs_to_jiffies(const unsigned int m)
+{
+	return m;
+}
+
+static inline unsigned long nsecs_to_jiffies(u64 n)
+{
+	return n / NSEC_PER_MSEC;
+}
+
+static inline u64 sched_clock(void)
+{
+	struct timespec ts;
+
+	clock_gettime(CLOCK_MONOTONIC_COARSE, &ts);
+
+	return ((s64) ts.tv_sec * NSEC_PER_SEC) + ts.tv_nsec;
+}
+
+static inline u64 local_clock(void)
+{
+	return sched_clock();
+}
+
+static inline u64 ktime_get_ns(void)
+{
+	return sched_clock();
+}
+
+#define jiffies			nsecs_to_jiffies(sched_clock())
+
+#endif