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List:       linux-backports
Subject:    [PATCH 09/14] backport: make ktime_get_boottime_seconds() non-inline
From:       Luca Coelho <luca () coelho ! fi>
Date:       2018-09-20 11:28:37
Message-ID: 20180920112842.27198-10-luca () coelho ! fi
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From: Luca Coelho <luciano.coelho@intel.com>

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>
---
 backport/backport-include/linux/timekeeping.h |  5 +----
 backport/compat/Makefile                      |  1 +
 backport/compat/backport-4.18.c               | 11 +++++++++++
 3 files changed, 13 insertions(+), 4 deletions(-)
 create mode 100644 backport/compat/backport-4.18.c

diff --git a/backport/backport-include/linux/timekeeping.h \
b/backport/backport-include/linux/timekeeping.h index 73ce9f1797ed..aebb00ca366b \
                100644
--- a/backport/backport-include/linux/timekeeping.h
+++ b/backport/backport-include/linux/timekeeping.h
@@ -25,10 +25,7 @@ static inline u64 ktime_get_boot_ns(void)
 #endif /* < 3.17 */
 
 #if LINUX_VERSION_IS_LESS(4,18,0)
-static inline time64_t ktime_get_boottime_seconds(void)
-{
-	return ktime_divns(ktime_get_boottime(), NSEC_PER_SEC);
-}
+extern time64_t ktime_get_boottime_seconds(void);
 #endif /* < 4.18 */
 
 #if LINUX_VERSION_IS_LESS(3,19,0)
diff --git a/backport/compat/Makefile b/backport/compat/Makefile
index 12c4121ff7e1..f5b1886e2d8e 100644
--- a/backport/compat/Makefile
+++ b/backport/compat/Makefile
@@ -37,6 +37,7 @@ compat-$(CPTCFG_KERNEL_4_7) += backport-4.7.o
 compat-$(CPTCFG_KERNEL_4_8) += backport-4.8.o
 compat-$(CPTCFG_KERNEL_4_10) += backport-4.10.o
 compat-$(CPTCFG_KERNEL_4_12) += backport-4.12.o
+compat-$(CPTCFG_KERNEL_4_18) += backport-4.18.o
 
 compat-$(CPTCFG_BPAUTO_CRYPTO_SKCIPHER) += crypto-skcipher.o
 
diff --git a/backport/compat/backport-4.18.c b/backport/compat/backport-4.18.c
new file mode 100644
index 000000000000..c47fabe5a7a1
--- /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);
-- 
2.18.0

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