backport: make ktime_get_boottime_seconds() non-inline

With kernels < 3.17, we need to include hrtimer.h to get ktime_divns()
for the ktime_get_boottime_seconds() backport.  But we can't just
include htrtimer.h in the backport timekeeping.h because we run into
some cyclical inclusions that cause problems.  To solve that make
ktime_get_boottime_seconds() non-inline and add it to a new
backport-4.18.c file.

Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/backport/compat/backport-4.18.c b/backport/compat/backport-4.18.c
new file mode 100644
index 00000000..c47fabe5
--- /dev/null
+++ b/backport/compat/backport-4.18.c
@@ -0,0 +1,11 @@
+/*
+ * Copyright (C) 2018 Intel Corporation
+ */
+
+#include <linux/hrtimer.h>
+
+time64_t ktime_get_boottime_seconds(void)
+{
+	return ktime_divns(ktime_get_boottime(), NSEC_PER_SEC);
+}
+EXPORT_SYMBOL_GPL(ktime_get_boottime_seconds);