LU-4423 ptlrpc: use 64-bit times for request times

[fs/lustre-release.git] / libcfs / autoconf / lustre-libcfs.m4

diff --git a/libcfs/autoconf/lustre-libcfs.m4 b/libcfs/autoconf/lustre-libcfs.m4
index db240c2..fb93f0e 100644 (file)
--- a/libcfs/autoconf/lustre-libcfs.m4
+++ b/libcfs/autoconf/lustre-libcfs.m4
@@ -435,6 +435,41 @@ ktime_to_timespec64, [
 ]) # LIBCFS_KTIME_TO_TIMESPEC64
 
 #
+# Kernel version 3.17 introduced timespec64_sub
+#
+AC_DEFUN([LIBCFS_TIMESPEC64_SUB],[
+LB_CHECK_COMPILE([does function 'timespec64_sub' exist],
+timespec64_sub, [
+       #include <linux/time.h>
+],[
+       struct timespec64 later,earlier,diff;
+
+       diff = timespec64_sub(later, earlier);
+],[
+       AC_DEFINE(HAVE_TIMESPEC64_SUB, 1,
+               ['timespec64_sub' is available])
+])
+]) # LIBCFS_TIMESPEC64_SUB
+
+#
+# Kernel version 3.17 introduced timespec64_to_ktime
+#
+AC_DEFUN([LIBCFS_TIMESPEC64_TO_KTIME],[
+LB_CHECK_COMPILE([does function 'timespec64_to_ktime' exist],
+timespec64_to_ktime, [
+       #include <linux/ktime.h>
+],[
+       struct timespec64 ts;
+       ktime_t now;
+
+       now = timespec64_to_ktime(ts);
+],[
+       AC_DEFINE(HAVE_TIMESPEC64_TO_KTIME, 1,
+               ['timespec64_to_ktime' is available])
+])
+]) # LIBCFS_TIMESPEC64_TO_KTIME
+
+#
 # Kernel version 3.19 introduced ktime_get_seconds
 #
 AC_DEFUN([LIBCFS_KTIME_GET_SECONDS],[
@@ -617,6 +652,8 @@ LIBCFS_KTIME_GET_REAL_TS64
 LIBCFS_KTIME_GET_REAL_SECONDS
 LIBCFS_KTIME_GET_REAL_NS
 LIBCFS_KTIME_TO_TIMESPEC64
+LIBCFS_TIMESPEC64_SUB
+LIBCFS_TIMESPEC64_TO_KTIME
 # 3.19
 LIBCFS_KTIME_GET_SECONDS
 # 4.2