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Linux 5.6 compat: ktime_get_raw_ts64()

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The getrawmonotonic() and getrawmonotonic64() interfaces have been
fully retired.  Update gethrtime() to use the replacement interface
ktime_get_raw_ts64() which was introduced in the 4.18 kernel.

Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #10052
Closes #10064
This commit is contained in:
Brian Behlendorf 2020-02-26 12:42:33 -08:00
parent 28caa74b19
commit ff5587d651
4 changed files with 62 additions and 25 deletions
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55
config/kernel-ktime.m4 Normal file
View File

@ -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
])

23
config/kernel-ktime_get_coarse_real_ts64.m4
View File

@ -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)
])
])

4
config/kernel.m4
View File

@ -114,7 +114,7 @@ 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
@ -208,7 +208,7 @@ 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

5
include/os/linux/spl/sys/time.h
View File

@ -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);
}