Simplify the time compatibility wrappers

Many of the time functions had grown overly complex in order to
handle kernel compatibility issues.  However, as of Linux 2.6.26
all the required functionality is available.  This allows us to
retire numerous configure checks and greatly simplify the time
compatibility wrappers.

Signed-off-by: Brian Behlendorf <[email protected]>

1 files changed, 0 insertions, 84 deletions

diff --git a/config/spl-build.m4 b/config/spl-build.m4
index fbe880836..109c653c1 100644
--- a/config/spl-build.m4
+++ b/config/spl-build.m4
@@ -30,12 +30,8 @@ AC_DEFUN([SPL_AC_CONFIG_KERNEL], [
 	SPL_AC_CTL_NAME
 	SPL_AC_VMALLOC_INFO
 	SPL_AC_PDE_DATA
-	SPL_AC_SET_NORMALIZED_TIMESPEC_EXPORT
-	SPL_AC_SET_NORMALIZED_TIMESPEC_INLINE
-	SPL_AC_TIMESPEC_SUB
 	SPL_AC_UACCESS_HEADER
 	SPL_AC_KMALLOC_NODE
-	SPL_AC_MONOTONIC_CLOCK
 	SPL_AC_INODE_I_MUTEX
 	SPL_AC_MUTEX_OWNER
 	SPL_AC_MUTEX_OWNER_TASK_STRUCT
@@ -993,66 +989,6 @@ AC_DEFUN([SPL_AC_CTL_NAME], [
 ])
 
 dnl #
-dnl # 2.6.26 API change, set_normalized_timespec() is exported.
-dnl #
-AC_DEFUN([SPL_AC_SET_NORMALIZED_TIMESPEC_EXPORT],
-	[AC_MSG_CHECKING([whether set_normalized_timespec() is available as export])
-	SPL_LINUX_TRY_COMPILE_SYMBOL([
-		#include <linux/time.h>
-	], [
-		set_normalized_timespec(NULL, 0, 0);
-	], [set_normalized_timespec], [kernel/time.c], [
-		AC_MSG_RESULT(yes)
-		AC_DEFINE(HAVE_SET_NORMALIZED_TIMESPEC_EXPORT, 1,
-		          [set_normalized_timespec() is available as export])
-	], [
-		AC_MSG_RESULT(no)
-	])
-])
-
-dnl #
-dnl # 2.6.16 API change, set_normalize_timespec() moved to time.c
-dnl # previously it was available in time.h as an inline.
-dnl #
-AC_DEFUN([SPL_AC_SET_NORMALIZED_TIMESPEC_INLINE], [
-	AC_MSG_CHECKING([whether set_normalized_timespec() is an inline])
-	SPL_LINUX_TRY_COMPILE([
-		#include <linux/time.h>
-		void set_normalized_timespec(struct timespec *ts,
-		                             time_t sec, long nsec) { }
-	],
-	[],
-	[
-		AC_MSG_RESULT(no)
-	],[
-		AC_MSG_RESULT(yes)
-		AC_DEFINE(HAVE_SET_NORMALIZED_TIMESPEC_INLINE, 1,
-		          [set_normalized_timespec() is available as inline])
-	])
-])
-
-dnl #
-dnl # 2.6.18 API change,
-dnl # timespec_sub() inline function available in linux/time.h
-dnl #
-AC_DEFUN([SPL_AC_TIMESPEC_SUB], [
-	AC_MSG_CHECKING([whether timespec_sub() is available])
-	SPL_LINUX_TRY_COMPILE([
-		#include <linux/time.h>
-	],[
-		struct timespec a = { 0 };
-		struct timespec b = { 0 };
-		struct timespec c __attribute__ ((unused));
-		c = timespec_sub(a, b);
-	],[
-		AC_MSG_RESULT(yes)
-		AC_DEFINE(HAVE_TIMESPEC_SUB, 1, [timespec_sub() is available])
-	],[
-		AC_MSG_RESULT(no)
-	])
-])
-
-dnl #
 dnl # 2.6.18 API change,
 dnl # added linux/uaccess.h
 dnl #
@@ -1080,26 +1016,6 @@ AC_DEFUN([SPL_AC_KMALLOC_NODE], [
 ])
 
 dnl #
-dnl # 2.6.9 API change,
-dnl # check whether 'monotonic_clock()' is available it may
-dnl # be available for some archs but not others.
-dnl #
-AC_DEFUN([SPL_AC_MONOTONIC_CLOCK],
-	[AC_MSG_CHECKING([whether monotonic_clock() is available])
-	SPL_LINUX_TRY_COMPILE_SYMBOL([
-		#include <linux/timex.h>
-	], [
-		monotonic_clock();
-	], [monotonic_clock], [], [
-		AC_MSG_RESULT(yes)
-		AC_DEFINE(HAVE_MONOTONIC_CLOCK, 1,
-		          [monotonic_clock() is available])
-	], [
-		AC_MSG_RESULT(no)
-	])
-])
-
-dnl #
 dnl # 2.6.16 API change,
 dnl # check whether 'struct inode' has i_mutex
 dnl #