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diff --git a/config/kernel-ktime.m4 b/config/kernel-ktime.m4
new file mode 100644
index 00000000000..64c3b5f9032
--- /dev/null
+++ b/config/kernel-ktime.m4
@@ -0,0 +1,55 @@
+dnl #
+dnl # 4.18: ktime_get_coarse_real_ts64() replaces current_kernel_time64().
+dnl #
+AC_DEFUN([ZFS_AC_KERNEL_SRC_KTIME_GET_COARSE_REAL_TS64], [
+ ZFS_LINUX_TEST_SRC([ktime_get_coarse_real_ts64], [
+ #include <linux/mm.h>
+ ], [
+ struct timespec64 ts;
+ ktime_get_coarse_real_ts64(&ts);
+ ])
+])
+
+AC_DEFUN([ZFS_AC_KERNEL_KTIME_GET_COARSE_REAL_TS64], [
+ AC_MSG_CHECKING([whether ktime_get_coarse_real_ts64() exists])
+ ZFS_LINUX_TEST_RESULT([ktime_get_coarse_real_ts64], [
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_KTIME_GET_COARSE_REAL_TS64, 1,
+ [ktime_get_coarse_real_ts64() exists])
+ ], [
+ AC_MSG_RESULT(no)
+ ])
+])
+
+dnl #
+dnl # 4.18: ktime_get_raw_ts64() replaces getrawmonotonic64().
+dnl #
+AC_DEFUN([ZFS_AC_KERNEL_SRC_KTIME_GET_RAW_TS64], [
+ ZFS_LINUX_TEST_SRC([ktime_get_raw_ts64], [
+ #include <linux/mm.h>
+ ], [
+ struct timespec64 ts;
+ ktime_get_raw_ts64(&ts);
+ ])
+])
+
+AC_DEFUN([ZFS_AC_KERNEL_KTIME_GET_RAW_TS64], [
+ AC_MSG_CHECKING([whether ktime_get_raw_ts64() exists])
+ ZFS_LINUX_TEST_RESULT([ktime_get_raw_ts64], [
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_KTIME_GET_RAW_TS64, 1,
+ [ktime_get_raw_ts64() exists])
+ ], [
+ AC_MSG_RESULT(no)
+ ])
+])
+
+AC_DEFUN([ZFS_AC_KERNEL_SRC_KTIME], [
+ ZFS_AC_KERNEL_SRC_KTIME_GET_COARSE_REAL_TS64
+ ZFS_AC_KERNEL_SRC_KTIME_GET_RAW_TS64
+])
+
+AC_DEFUN([ZFS_AC_KERNEL_KTIME], [
+ ZFS_AC_KERNEL_KTIME_GET_COARSE_REAL_TS64
+ ZFS_AC_KERNEL_KTIME_GET_RAW_TS64
+])
diff --git a/config/kernel-ktime_get_coarse_real_ts64.m4 b/config/kernel-ktime_get_coarse_real_ts64.m4
deleted file mode 100644
index 28492bf04bc..00000000000
--- a/config/kernel-ktime_get_coarse_real_ts64.m4
+++ /dev/null
@@ -1,23 +0,0 @@
-dnl #
-dnl # 4.18: ktime_get_coarse_real_ts64() added. Use it in place of
-dnl # current_kernel_time64().
-dnl #
-AC_DEFUN([ZFS_AC_KERNEL_SRC_KTIME_GET_COARSE_REAL_TS64], [
- ZFS_LINUX_TEST_SRC([ktime_get_coarse_real_ts64], [
- #include <linux/mm.h>
- ], [
- struct timespec64 ts;
- ktime_get_coarse_real_ts64(&ts);
- ])
-])
-
-AC_DEFUN([ZFS_AC_KERNEL_KTIME_GET_COARSE_REAL_TS64], [
- AC_MSG_CHECKING([whether ktime_get_coarse_real_ts64() exists])
- ZFS_LINUX_TEST_RESULT([ktime_get_coarse_real_ts64], [
- AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_KTIME_GET_COARSE_REAL_TS64, 1,
- [ktime_get_coarse_real_ts64() exists])
- ], [
- AC_MSG_RESULT(no)
- ])
-])
diff --git a/config/kernel.m4 b/config/kernel.m4
index 780de331800..994865fdba1 100644
--- a/config/kernel.m4
+++ b/config/kernel.m4
@@ -137,7 +137,7 @@ AC_DEFUN([ZFS_AC_KERNEL_TEST_SRC], [
ZFS_AC_KERNEL_SRC_CURRENT_TIME
ZFS_AC_KERNEL_SRC_USERNS_CAPABILITIES
ZFS_AC_KERNEL_SRC_IN_COMPAT_SYSCALL
- ZFS_AC_KERNEL_SRC_KTIME_GET_COARSE_REAL_TS64
+ ZFS_AC_KERNEL_SRC_KTIME
ZFS_AC_KERNEL_SRC_TOTALRAM_PAGES_FUNC
ZFS_AC_KERNEL_SRC_TOTALHIGH_PAGES
ZFS_AC_KERNEL_SRC_KSTRTOUL
@@ -254,7 +254,7 @@ AC_DEFUN([ZFS_AC_KERNEL_TEST_RESULT], [
ZFS_AC_KERNEL_CURRENT_TIME
ZFS_AC_KERNEL_USERNS_CAPABILITIES
ZFS_AC_KERNEL_IN_COMPAT_SYSCALL
- ZFS_AC_KERNEL_KTIME_GET_COARSE_REAL_TS64
+ ZFS_AC_KERNEL_KTIME
ZFS_AC_KERNEL_TOTALRAM_PAGES_FUNC
ZFS_AC_KERNEL_TOTALHIGH_PAGES
ZFS_AC_KERNEL_KSTRTOUL
diff --git a/include/spl/sys/time.h b/include/spl/sys/time.h
index 24c1ec7c7ae..4309c300b26 100644
--- a/include/spl/sys/time.h
+++ b/include/spl/sys/time.h
@@ -105,8 +105,13 @@ gethrestime_sec(void)
static inline hrtime_t
gethrtime(void)
{
+#if defined(HAVE_KTIME_GET_RAW_TS64)
+ struct timespec64 ts;
+ ktime_get_raw_ts64(&ts);
+#else
struct timespec ts;
getrawmonotonic(&ts);
+#endif
return (((hrtime_t)ts.tv_sec * NSEC_PER_SEC) + ts.tv_nsec);
}
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