Backports v5.4.27

Backports generated by toradex backports f6e8852f1ef28e6d3c9bae8400eb6a87a6b0c3e7
against mainline kernel tag v5.4.27

Signed-off-by: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>

1 files changed, 25 insertions, 0 deletions

diff --git a/backport-include/linux/timecounter.h b/backport-include/linux/timecounter.h
new file mode 100644
index 0000000..596015b
--- /dev/null
+++ b/backport-include/linux/timecounter.h
@@ -0,0 +1,25 @@
+#ifndef __BACKPORT_LINUX_TIMECOUNTER_H
+#define __BACKPORT_LINUX_TIMECOUNTER_H
+
+#if LINUX_VERSION_IS_GEQ(3,20,0)
+#include_next <linux/timecounter.h>
+#else
+#include <linux/clocksource.h>
+
+/**
+ * timecounter_adjtime - Shifts the time of the clock.
+ * @delta:	Desired change in nanoseconds.
+ */
+#define timecounter_adjtime LINUX_BACKPORT(timecounter_adjtime)
+static inline void timecounter_adjtime(struct timecounter *tc, s64 delta)
+{
+	tc->nsec += delta;
+}
+#endif
+
+#ifndef CYCLECOUNTER_MASK
+/* simplify initialization of mask field */
+#define CYCLECOUNTER_MASK(bits) (cycle_t)((bits) < 64 ? ((1ULL<<(bits))-1) : -1)
+#endif
+
+#endif /* __BACKPORT_LINUX_TIMECOUNTER_H */