When checking for symbol exports, try compiling.

This patch adds a new autoconf function: SPL_LINUX_TRY_COMPILE_SYMBOL.
This new function does the following:

 - Call LINUX_TRY_COMPILE with the specified parameters.
 - If unsuccessful, return false.
 - If successful and we're configuring with --enable-linux-builtin,
   return true.
 - Else, call CHECK_SYMBOL_EXPORT with the specified parameters and
   return the result.

All calls to CHECK_SYMBOL_EXPORT are converted to
LINUX_TRY_COMPILE_SYMBOL so that the tests work even when configuring
for builtin on a kernel which doesn't have loadable module support, or
hasn't been built yet.

The only exception are:

 - AC_GET_VMALLOC_INFO, because we don't even have a public header to
include in the test case, but that's okay considering this symbol can
be ignored just fine.

- SPL_AC_DEVICE_CREATE, which is legacy API for 2.6.18 kernels.  Since
kernels this old are no longer supported it should arguably just be
removed entirely from the build system.

Note that we're also checking for the correct prototype with an actual
call, which was not the case with CHECK_SYMBOL_EXPORT. However, for
"complicated" test cases like with multiple symbol versions (e.g.
vfs_fsync), we stick with the original behavior and only check for the
function's existence.

Signed-off-by: Brian Behlendorf <[email protected]>
Issue zfsonlinux/zfs#851

3 files changed, 3994 insertions, 956 deletions

diff --git a/config/spl-build.m4 b/config/spl-build.m4
index 466d9eb50..7ec81e713 100644
--- a/config/spl-build.m4
+++ b/config/spl-build.m4
@@ -137,7 +137,7 @@ AC_DEFUN([SPL_AC_KERNEL], [
 			sourcelink=$(readlink -f "$headersdir")
 		else
 			sourcelink=$(ls -1d /usr/src/kernels/* \
-				     /usr/src/linux-* \
+			             /usr/src/linux-* \
 			             2>/dev/null | grep -v obj | tail -1)
 		fi
 
@@ -678,8 +678,7 @@ dnl #
 dnl # SPL_CHECK_SYMBOL_EXPORT
 dnl # check symbol exported or not
 dnl #
-AC_DEFUN([SPL_CHECK_SYMBOL_EXPORT],
-	[AC_MSG_CHECKING([whether symbol $1 is exported])
+AC_DEFUN([SPL_CHECK_SYMBOL_EXPORT], [
 	grep -q -E '[[[:space:]]]$1[[[:space:]]]' \
 		$LINUX_OBJ/Module*.symvers 2>/dev/null
 	rc=$?
@@ -689,25 +688,43 @@ AC_DEFUN([SPL_CHECK_SYMBOL_EXPORT],
 			grep -q -E "EXPORT_SYMBOL.*($1)" \
 				"$LINUX_OBJ/$file" 2>/dev/null
 			rc=$?
-		        if test $rc -eq 0; then
-		                export=1
-		                break;
-		        fi
+			if test $rc -eq 0; then
+				export=1
+				break;
+			fi
 		done
-		if test $export -eq 0; then
-			AC_MSG_RESULT([no])
+		if test $export -eq 0; then :
 			$4
-		else
-			AC_MSG_RESULT([yes])
+		else :
 			$3
 		fi
-	else
-		AC_MSG_RESULT([yes])
+	else :
 		$3
 	fi
 ])
 
 dnl #
+dnl # SPL_LINUX_TRY_COMPILE_SYMBOL
+dnl # like SPL_LINUX_TRY_COMPILE, except SPL_CHECK_SYMBOL_EXPORT
+dnl # is called if not compiling for builtin
+dnl #
+AC_DEFUN([SPL_LINUX_TRY_COMPILE_SYMBOL], [
+	SPL_LINUX_TRY_COMPILE([$1], [$2], [rc=0], [rc=1])
+	if test $rc -ne 0; then :
+		$6
+	else
+		if test "x$enable_linux_builtin" != xyes; then
+			SPL_CHECK_SYMBOL_EXPORT([$3], [$4], [rc=0], [rc=1])
+		fi
+		if test $rc -ne 0; then :
+			$6
+		else :
+			$5
+		fi
+	fi
+])
+
+dnl #
 dnl # SPL_CHECK_SYMBOL_HEADER
 dnl # check if a symbol prototype is defined in listed headers.
 dnl #
@@ -717,10 +734,10 @@ AC_DEFUN([SPL_CHECK_SYMBOL_HEADER], [
 	for file in $3; do
 		grep -q "$2" "$LINUX/$file" 2>/dev/null
 		rc=$?
-	        if test $rc -eq 0; then
-	                header=1
-	                break;
-	        fi
+		if test $rc -eq 0; then
+			header=1
+			break;
+		fi
 	done
 	if test $header -eq 0; then
 		AC_MSG_RESULT([no])
@@ -991,10 +1008,18 @@ AC_DEFUN([SPL_AC_PATH_IN_NAMEIDATA],
 dnl #
 dnl # Custom SPL patch may export this system it is not required
 dnl #
-AC_DEFUN([SPL_AC_TASK_CURR], [
-	SPL_CHECK_SYMBOL_EXPORT([task_curr], [kernel/sched.c],
-		[AC_DEFINE(HAVE_TASK_CURR, 1, [task_curr() exported])],
-		[])
+AC_DEFUN([SPL_AC_TASK_CURR],
+	[AC_MSG_CHECKING([whether task_curr() is available])
+	SPL_LINUX_TRY_COMPILE_SYMBOL([
+		#include <linux/sched.h>
+	], [
+		task_curr(NULL);
+	], [task_curr], [kernel/sched.c], [
+		AC_MSG_RESULT(yes)
+		AC_DEFINE(HAVE_TASK_CURR, 1, [task_curr() is available])
+	], [
+		AC_MSG_RESULT(no)
+	])
 ])
 
 dnl #
@@ -1060,13 +1085,15 @@ dnl # 2.6.18 API change, check whether device_create() is available.
 dnl # Device_create() was introduced in 2.6.18 and depricated 
 dnl # class_device_create() which was fully removed in 2.6.26.
 dnl #
-AC_DEFUN([SPL_AC_DEVICE_CREATE], [
-	SPL_CHECK_SYMBOL_EXPORT(
-		[device_create],
-		[drivers/base/core.c],
-		[AC_DEFINE(HAVE_DEVICE_CREATE, 1,
-		[device_create() is available])],
-		[])
+AC_DEFUN([SPL_AC_DEVICE_CREATE],
+	[AC_MSG_CHECKING([whether device_create() is available])
+	SPL_CHECK_SYMBOL_EXPORT([device_create], [drivers/base/core.c], [
+		AC_MSG_RESULT(yes)
+		AC_DEFINE(HAVE_DEVICE_CREATE, 1,
+		          [device_create() is available])
+	], [
+		AC_MSG_RESULT(no)
+	])
 ])
 
 dnl #
@@ -1096,25 +1123,37 @@ dnl # 2.6.13 API change, check whether class_device_create() is available.
 dnl # Class_device_create() was introduced in 2.6.13 and depricated
 dnl # class_simple_device_add() which was fully removed in 2.6.13.
 dnl #
-AC_DEFUN([SPL_AC_CLASS_DEVICE_CREATE], [
-	SPL_CHECK_SYMBOL_EXPORT(
-		[class_device_create],
-		[drivers/base/class.c],
-		[AC_DEFINE(HAVE_CLASS_DEVICE_CREATE, 1,
-		[class_device_create() is available])],
-		[])
+AC_DEFUN([SPL_AC_CLASS_DEVICE_CREATE],
+	[AC_MSG_CHECKING([whether class_device_create() is available])
+	SPL_LINUX_TRY_COMPILE_SYMBOL([
+		#include <linux/device.h>
+	], [
+		class_device_create(NULL, NULL, 0, NULL, NULL);
+	], [class_device_create], [drivers/base/class.c], [
+		AC_MSG_RESULT(yes)
+		AC_DEFINE(HAVE_CLASS_DEVICE_CREATE, 1,
+		          [class_device_create() is available])
+	], [
+		AC_MSG_RESULT(no)
+	])
 ])
 
 dnl #
 dnl # 2.6.26 API change, set_normalized_timespec() is exported.
 dnl #
-AC_DEFUN([SPL_AC_SET_NORMALIZED_TIMESPEC_EXPORT], [
-	SPL_CHECK_SYMBOL_EXPORT(
-		[set_normalized_timespec],
-		[kernel/time.c],
-		[AC_DEFINE(HAVE_SET_NORMALIZED_TIMESPEC_EXPORT, 1,
-		[set_normalized_timespec() is available as export])],
-		[])
+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 #
@@ -1264,13 +1303,19 @@ 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], [
-	SPL_CHECK_SYMBOL_EXPORT(
-		[monotonic_clock],
-		[],
-		[AC_DEFINE(HAVE_MONOTONIC_CLOCK, 1,
-		[monotonic_clock() is available])],
-		[])
+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 #
@@ -1384,13 +1429,19 @@ dnl #
 dnl # 2.6.18 API change,
 dnl # kallsyms_lookup_name no longer exported
 dnl #
-AC_DEFUN([SPL_AC_KALLSYMS_LOOKUP_NAME], [
-	SPL_CHECK_SYMBOL_EXPORT(
-		[kallsyms_lookup_name],
-		[],
-		[AC_DEFINE(HAVE_KALLSYMS_LOOKUP_NAME, 1,
-		[kallsyms_lookup_name() is available])],
-		[])
+AC_DEFUN([SPL_AC_KALLSYMS_LOOKUP_NAME],
+	[AC_MSG_CHECKING([whether kallsyms_lookup_name() is available])
+	SPL_LINUX_TRY_COMPILE_SYMBOL([
+		#include <linux/kallsyms.h>
+	], [
+		kallsyms_lookup_name(NULL);
+	], [kallsyms_lookup_name], [], [
+		AC_MSG_RESULT(yes)
+		AC_DEFINE(HAVE_KALLSYMS_LOOKUP_NAME, 1,
+		          [kallsyms_lookup_name() is available])
+	], [
+		AC_MSG_RESULT(no)
+	])
 ])
 
 dnl #
@@ -1400,13 +1451,15 @@ dnl # custom kernel with the *-spl-export-symbols.patch which will export
 dnl # these symbols for use.  If your already rolling a custom kernel for
 dnl # your environment this is recommended.
 dnl #
-AC_DEFUN([SPL_AC_GET_VMALLOC_INFO], [
-	SPL_CHECK_SYMBOL_EXPORT(
-		[get_vmalloc_info],
-		[],
-		[AC_DEFINE(HAVE_GET_VMALLOC_INFO, 1,
-		[get_vmalloc_info() is available])],
-		[])
+AC_DEFUN([SPL_AC_GET_VMALLOC_INFO],
+	[AC_MSG_CHECKING([whether get_vmalloc_info() is available])
+	SPL_CHECK_SYMBOL_EXPORT([get_vmalloc_info], [], [
+		AC_MSG_RESULT(yes)
+		AC_DEFINE(HAVE_GET_VMALLOC_INFO, 1,
+		          [get_vmalloc_info() is available])
+	], [
+		AC_MSG_RESULT(no)
+	])
 ])
 
 dnl #
@@ -1428,7 +1481,7 @@ AC_DEFUN([SPL_AC_PGDAT_HELPERS], [
 	rc=$?
 	if test $rc -eq 0; then
 		AC_MSG_RESULT([yes])
-                AC_DEFINE(HAVE_PGDAT_HELPERS, 1, [pgdat helpers are available])
+		AC_DEFINE(HAVE_PGDAT_HELPERS, 1, [pgdat helpers are available])
 	else
 		AC_MSG_RESULT([no])
 	fi
@@ -1441,13 +1494,19 @@ dnl # custom kernel with the *-spl-export-symbols.patch which will export
 dnl # these symbols for use.  If your already rolling a custom kernel for
 dnl # your environment this is recommended.
 dnl #
-AC_DEFUN([SPL_AC_FIRST_ONLINE_PGDAT], [
-	SPL_CHECK_SYMBOL_EXPORT(
-		[first_online_pgdat],
-		[],
-		[AC_DEFINE(HAVE_FIRST_ONLINE_PGDAT, 1,
-		[first_online_pgdat() is available])],
-		[])
+AC_DEFUN([SPL_AC_FIRST_ONLINE_PGDAT],
+	[AC_MSG_CHECKING([whether first_online_pgdat() is available])
+	SPL_LINUX_TRY_COMPILE_SYMBOL([
+		#include <linux/mmzone.h>
+	], [
+		first_online_pgdat();
+	], [first_online_pgdat], [], [
+		AC_MSG_RESULT(yes)
+		AC_DEFINE(HAVE_FIRST_ONLINE_PGDAT, 1,
+		          [first_online_pgdat() is available])
+	], [
+		AC_MSG_RESULT(no)
+	])
 ])
 
 dnl #
@@ -1457,13 +1516,19 @@ dnl # custom kernel with the *-spl-export-symbols.patch which will export
 dnl # these symbols for use.  If your already rolling a custom kernel for
 dnl # your environment this is recommended.
 dnl #
-AC_DEFUN([SPL_AC_NEXT_ONLINE_PGDAT], [
-	SPL_CHECK_SYMBOL_EXPORT(
-		[next_online_pgdat],
-		[],
-		[AC_DEFINE(HAVE_NEXT_ONLINE_PGDAT, 1,
-		[next_online_pgdat() is available])],
-		[])
+AC_DEFUN([SPL_AC_NEXT_ONLINE_PGDAT],
+	[AC_MSG_CHECKING([whether next_online_pgdat() is available])
+	SPL_LINUX_TRY_COMPILE_SYMBOL([
+		#include <linux/mmzone.h>
+	], [
+		next_online_pgdat(NULL);
+	], [next_online_pgdat], [], [
+		AC_MSG_RESULT(yes)
+		AC_DEFINE(HAVE_NEXT_ONLINE_PGDAT, 1,
+		          [next_online_pgdat() is available])
+	], [
+		AC_MSG_RESULT(no)
+	])
 ])
 
 dnl #
@@ -1473,26 +1538,35 @@ dnl # custom kernel with the *-spl-export-symbols.patch which will export
 dnl # these symbols for use.  If your already rolling a custom kernel for
 dnl # your environment this is recommended.
 dnl #
-AC_DEFUN([SPL_AC_NEXT_ZONE], [
-	SPL_CHECK_SYMBOL_EXPORT(
-		[next_zone],
-		[],
-		[AC_DEFINE(HAVE_NEXT_ZONE, 1,
-		[next_zone() is available])],
-		[])
+AC_DEFUN([SPL_AC_NEXT_ZONE],
+	[AC_MSG_CHECKING([whether next_zone() is available])
+	SPL_LINUX_TRY_COMPILE_SYMBOL([
+		#include <linux/mmzone.h>
+	], [
+		next_zone(NULL);
+	], [next_zone], [], [
+		AC_MSG_RESULT(yes)
+		AC_DEFINE(HAVE_NEXT_ZONE, 1, [next_zone() is available])
+	], [
+		AC_MSG_RESULT(no)
+	])
 ])
 
 dnl #
 dnl # 2.6.17 API change,
 dnl # See SPL_AC_PGDAT_HELPERS for details.
 dnl #
-AC_DEFUN([SPL_AC_PGDAT_LIST], [
-	SPL_CHECK_SYMBOL_EXPORT(
-		[pgdat_list],
-		[],
-		[AC_DEFINE(HAVE_PGDAT_LIST, 1,
-		[pgdat_list is available])],
-		[])
+AC_DEFUN([SPL_AC_PGDAT_LIST],
+	[AC_MSG_CHECKING([whether pgdat_list is available])
+	SPL_LINUX_TRY_COMPILE_SYMBOL([
+		#include <linux/topology.h>
+		pg_data_t *tmp = pgdat_list;
+	], [], [pgdat_list], [], [
+		AC_MSG_RESULT(yes)
+		AC_DEFINE(HAVE_PGDAT_LIST, 1, [pgdat_list is available])
+	], [
+		AC_MSG_RESULT(no)
+	])
 ])
 
 dnl #
@@ -1684,12 +1758,18 @@ AC_DEFUN([SPL_AC_GET_ZONE_COUNTS], [
 		AC_DEFINE(NEED_GET_ZONE_COUNTS, 1,
 		          [get_zone_counts() is needed])
 
-		SPL_CHECK_SYMBOL_EXPORT(
-			[get_zone_counts],
-			[],
-			[AC_DEFINE(HAVE_GET_ZONE_COUNTS, 1,
-			[get_zone_counts() is available])],
-			[])
+		AC_MSG_CHECKING([whether get_zone_counts() is available])
+		SPL_LINUX_TRY_COMPILE_SYMBOL([
+			#include <linux/mmzone.h>
+		], [
+			get_zone_counts(NULL, NULL, NULL);
+		], [get_zone_counts], [], [
+			AC_MSG_RESULT(yes)
+			AC_DEFINE(HAVE_GET_ZONE_COUNTS, 1,
+			          [get_zone_counts() is available])
+		], [
+			AC_MSG_RESULT(no)
+		])
 	])
 ])
 
@@ -1697,25 +1777,37 @@ dnl #
 dnl # 2.6.27 API change,
 dnl # The user_path_dir() replaces __user_walk()
 dnl #
-AC_DEFUN([SPL_AC_USER_PATH_DIR], [
-	SPL_CHECK_SYMBOL_EXPORT(
-		[user_path_at],
-		[],
-		[AC_DEFINE(HAVE_USER_PATH_DIR, 1,
-		[user_path_dir() is available])],
-		[])
+AC_DEFUN([SPL_AC_USER_PATH_DIR],
+	[AC_MSG_CHECKING([whether user_path_dir() is available])
+	SPL_LINUX_TRY_COMPILE_SYMBOL([
+		#include <linux/fcntl.h>
+		#include <linux/namei.h>
+	], [
+		user_path_dir(NULL, NULL);
+	], [user_path_at], [], [
+		AC_MSG_RESULT(yes)
+		AC_DEFINE(HAVE_USER_PATH_DIR, 1, [user_path_dir() is available])
+	], [
+		AC_MSG_RESULT(no)
+	])
 ])
 
 dnl #
 dnl # Symbol available in RHEL kernels not in stock kernels.
 dnl #
-AC_DEFUN([SPL_AC_SET_FS_PWD], [
-	SPL_CHECK_SYMBOL_EXPORT(
-		[set_fs_pwd],
-		[],
-		[AC_DEFINE(HAVE_SET_FS_PWD, 1,
-		[set_fs_pwd() is available])],
-		[])
+AC_DEFUN([SPL_AC_SET_FS_PWD],
+	[AC_MSG_CHECKING([whether set_fs_pwd() is available])
+	SPL_LINUX_TRY_COMPILE_SYMBOL([
+		#include <linux/spinlock.h>
+		#include <linux/fs_struct.h>
+	], [
+		(void) set_fs_pwd;
+	], [set_fs_pwd], [], [
+		AC_MSG_RESULT(yes)
+		AC_DEFINE(HAVE_SET_FS_PWD, 1, [set_fs_pwd() is available])
+	], [
+		AC_MSG_RESULT(no)
+	])
 ])
 
 dnl #
@@ -1823,26 +1915,37 @@ AC_DEFUN([SPL_AC_CRED_STRUCT], [
 dnl #
 dnl # Custom SPL patch may export this symbol.
 dnl #
-AC_DEFUN([SPL_AC_GROUPS_SEARCH], [
-	SPL_CHECK_SYMBOL_EXPORT(
-		[groups_search],
-		[],
-		[AC_DEFINE(HAVE_GROUPS_SEARCH, 1,
-		[groups_search() is available])],
-		[])
+AC_DEFUN([SPL_AC_GROUPS_SEARCH],
+	[AC_MSG_CHECKING([whether groups_search() is available])
+	SPL_LINUX_TRY_COMPILE_SYMBOL([
+		#include <linux/cred.h>
+	], [
+		groups_search(NULL, 0);
+	], [groups_search], [], [
+		AC_MSG_RESULT(yes)
+		AC_DEFINE(HAVE_GROUPS_SEARCH, 1, [groups_search() is available])
+	], [
+		AC_MSG_RESULT(no)
+	])
 ])
 
 dnl #
 dnl # 2.6.x API change,
 dnl # __put_task_struct() was exported in RHEL5 but unavailable elsewhere.
 dnl #
-AC_DEFUN([SPL_AC_PUT_TASK_STRUCT], [
-	SPL_CHECK_SYMBOL_EXPORT(
-		[__put_task_struct],
-		[],
-		[AC_DEFINE(HAVE_PUT_TASK_STRUCT, 1,
-		[__put_task_struct() is available])],
-		[])
+AC_DEFUN([SPL_AC_PUT_TASK_STRUCT],
+	[AC_MSG_CHECKING([whether __put_task_struct() is available])
+	SPL_LINUX_TRY_COMPILE_SYMBOL([
+		#include <linux/sched.h>
+	], [
+		__put_task_struct(NULL);
+	], [__put_task_struct], [], [
+		AC_MSG_RESULT(yes)
+		AC_DEFINE(HAVE_PUT_TASK_STRUCT, 1,
+		          [__put_task_struct() is available])
+	], [
+		AC_MSG_RESULT(no)
+	])
 ])
 
 dnl #
@@ -1868,25 +1971,36 @@ dnl #
 dnl # 2.6.x API change,
 dnl # kvasprintf() function added.
 dnl #
-AC_DEFUN([SPL_AC_KVASPRINTF], [
-	SPL_CHECK_SYMBOL_EXPORT(
-		[kvasprintf],
-		[],
-		[AC_DEFINE(HAVE_KVASPRINTF, 1,
-		[kvasprintf() is available])],
-		[])
+AC_DEFUN([SPL_AC_KVASPRINTF],
+	[AC_MSG_CHECKING([whether kvasprintf() is available])
+	SPL_LINUX_TRY_COMPILE_SYMBOL([
+		#include <linux/kernel.h>
+	], [
+		kvasprintf(0, NULL, *((va_list*)NULL));
+	], [kvasprintf], [], [
+		AC_MSG_RESULT(yes)
+		AC_DEFINE(HAVE_KVASPRINTF, 1, [kvasprintf() is available])
+	], [
+		AC_MSG_RESULT(no)
+	])
 ])
 
 dnl #
 dnl # 2.6.29 API change,
 dnl # vfs_fsync() funcation added, prior to this use file_fsync().
 dnl #
-AC_DEFUN([SPL_AC_VFS_FSYNC], [
-	SPL_CHECK_SYMBOL_EXPORT(
-		[vfs_fsync],
-		[fs/sync.c],
-		[AC_DEFINE(HAVE_VFS_FSYNC, 1, [vfs_fsync() is available])],
-		[])
+AC_DEFUN([SPL_AC_VFS_FSYNC],
+	[AC_MSG_CHECKING([whether vfs_fsync() is available])
+	SPL_LINUX_TRY_COMPILE_SYMBOL([
+		#include <linux/fs.h>
+	], [
+		(void) vfs_fsync;
+	], [vfs_fsync], [fs/sync.c], [
+		AC_MSG_RESULT(yes)
+		AC_DEFINE(HAVE_VFS_FSYNC, 1, [vfs_fsync() is available])
+	], [
+		AC_MSG_RESULT(no)
+	])
 ])
 
 dnl #
@@ -1914,13 +2028,18 @@ dnl # condition.  The fixed version is exported as a symbol.  The race
 dnl # condition is fixed by acquiring sem->wait_lock, so we must not
 dnl # call that version while holding sem->wait_lock.
 dnl #
-AC_DEFUN([SPL_AC_EXPORTED_RWSEM_IS_LOCKED], [
-	SPL_CHECK_SYMBOL_EXPORT(
-		[rwsem_is_locked],
-		[lib/rwsem-spinlock.c],
-		[AC_DEFINE(RWSEM_IS_LOCKED_TAKES_WAIT_LOCK, 1,
-		[rwsem_is_locked() acquires sem->wait_lock])],
-		[])
+AC_DEFUN([SPL_AC_EXPORTED_RWSEM_IS_LOCKED],
+	[AC_MSG_CHECKING([whether rwsem_is_locked() acquires sem->wait_lock])
+	SPL_LINUX_TRY_COMPILE_SYMBOL([
+		#include <linux/rwsem.h>
+		int rwsem_is_locked(struct rw_semaphore *sem) { return 0; }
+	], [], [rwsem_is_locked], [lib/rwsem-spinlock.c], [
+		AC_MSG_RESULT(yes)
+		AC_DEFINE(RWSEM_IS_LOCKED_TAKES_WAIT_LOCK, 1,
+		          [rwsem_is_locked() acquires sem->wait_lock])
+	], [
+		AC_MSG_RESULT(no)
+	])
 ])
 
 dnl #
@@ -1937,18 +2056,31 @@ dnl # of these functions are exported invalidate_inodes() can be
 dnl # safely used.
 dnl #
 AC_DEFUN([SPL_AC_KERNEL_INVALIDATE_INODES], [
-	SPL_CHECK_SYMBOL_EXPORT(
-		[invalidate_inodes],
-		[],
-		[AC_DEFINE(HAVE_INVALIDATE_INODES, 1,
-		[invalidate_inodes() is available])],
-		[])
-	SPL_CHECK_SYMBOL_EXPORT(
-		[invalidate_inodes_check],
-		[],
-		[AC_DEFINE(HAVE_INVALIDATE_INODES_CHECK, 1,
-		[invalidate_inodes_check() is available])],
-		[])
+	AC_MSG_CHECKING([whether invalidate_inodes() is available])
+	SPL_LINUX_TRY_COMPILE_SYMBOL([
+		#include <linux/fs.h>
+	], [
+		invalidate_inodes;
+	], [invalidate_inodes], [], [
+		AC_MSG_RESULT(yes)
+		AC_DEFINE(HAVE_INVALIDATE_INODES, 1,
+		          [invalidate_inodes() is available])
+	], [
+		AC_MSG_RESULT(no)
+	])
+
+	AC_MSG_CHECKING([whether invalidate_inodes_check() is available])
+	SPL_LINUX_TRY_COMPILE_SYMBOL([
+		#include <linux/fs.h>
+	], [
+		invalidate_inodes_check(NULL, 0);
+	], [invalidate_inodes_check], [], [
+		AC_MSG_RESULT(yes)
+		AC_DEFINE(HAVE_INVALIDATE_INODES_CHECK, 1,
+		          [invalidate_inodes_check() is available])
+	], [
+		AC_MSG_RESULT(no)
+	])
 ])
 
 dnl #
@@ -1987,13 +2119,19 @@ dnl # There currently exists no exposed API to partially shrink the dcache.
 dnl # The expected mechanism to shrink the cache is a registered shrinker
 dnl # which is called during memory pressure.
 dnl #
-AC_DEFUN([SPL_AC_SHRINK_DCACHE_MEMORY], [
-	SPL_CHECK_SYMBOL_EXPORT(
-		[shrink_dcache_memory],
-		[fs/dcache.c],
-		[AC_DEFINE(HAVE_SHRINK_DCACHE_MEMORY, 1,
-		[shrink_dcache_memory() is available])],
-		[])
+AC_DEFUN([SPL_AC_SHRINK_DCACHE_MEMORY],
+	[AC_MSG_CHECKING([whether shrink_dcache_memory() is available])
+	SPL_LINUX_TRY_COMPILE_SYMBOL([
+		#include <linux/dcache.h>
+	], [
+		shrink_dcache_memory(0, 0);
+	], [shrink_dcache_memory], [fs/dcache.c], [
+		AC_MSG_RESULT(yes)
+		AC_DEFINE(HAVE_SHRINK_DCACHE_MEMORY, 1,
+		          [shrink_dcache_memory() is available])
+	], [
+		AC_MSG_RESULT(no)
+	])
 ])
 
 dnl #
@@ -2002,13 +2140,19 @@ dnl # There currently exists no exposed API to partially shrink the icache.
 dnl # The expected mechanism to shrink the cache is a registered shrinker
 dnl # which is called during memory pressure.
 dnl #
-AC_DEFUN([SPL_AC_SHRINK_ICACHE_MEMORY], [
-	SPL_CHECK_SYMBOL_EXPORT(
-		[shrink_icache_memory],
-		[fs/inode.c],
-		[AC_DEFINE(HAVE_SHRINK_ICACHE_MEMORY, 1,
-		[shrink_icache_memory() is available])],
-		[])
+AC_DEFUN([SPL_AC_SHRINK_ICACHE_MEMORY],
+	[AC_MSG_CHECKING([whether shrink_icache_memory() is available])
+	SPL_LINUX_TRY_COMPILE_SYMBOL([
+		#include <linux/dcache.h>
+	], [
+		shrink_icache_memory(0, 0);
+	], [shrink_icache_memory], [fs/inode.c], [
+		AC_MSG_RESULT(yes)
+		AC_DEFINE(HAVE_SHRINK_ICACHE_MEMORY, 1,
+		          [shrink_icache_memory() is available])
+	], [
+		AC_MSG_RESULT(no)
+	])
 ])
 
 dnl #
@@ -2034,13 +2178,19 @@ dnl # The kern_path_parent() symbol is no longer exported by the kernel.
 dnl # However, it remains the prefered interface and since we still have
 dnl # access to the prototype we dynamically lookup the required address.
 dnl #
-AC_DEFUN([SPL_AC_KERN_PATH_PARENT_SYMBOL], [
-	SPL_CHECK_SYMBOL_EXPORT(
-		[kern_path_parent],
-		[fs/namei.c],
-		[AC_DEFINE(HAVE_KERN_PATH_PARENT_SYMBOL, 1,
-		[kern_path_parent() is available])],
-		[])
+AC_DEFUN([SPL_AC_KERN_PATH_PARENT_SYMBOL],
+	[AC_MSG_CHECKING([whether kern_path_parent() is available])
+	SPL_LINUX_TRY_COMPILE_SYMBOL([
+		#include <linux/namei.h>
+	], [
+		kern_path_parent(NULL, NULL);
+	], [kern_path_parent], [fs/namei.c], [
+		AC_MSG_RESULT(yes)
+		AC_DEFINE(HAVE_KERN_PATH_PARENT_SYMBOL, 1,
+		          [kern_path_parent() is available])
+	], [
+		AC_MSG_RESULT(no)
+	])
 ])
 
 dnl #
diff --git a/configure b/configure
index 04acdf1b1..1ca8e847f 100755
--- a/configure
+++ b/configure
@@ -11772,7 +11772,7 @@ $as_echo_n "checking kernel source directory... " >&6; }
 			sourcelink=$(readlink -f "$headersdir")
 		else
 			sourcelink=$(ls -1d /usr/src/kernels/* \
-				     /usr/src/linux-* \
+			             /usr/src/linux-* \
 			             2>/dev/null | grep -v obj | tail -1)
 		fi
 
@@ -12849,9 +12849,69 @@ fi
 
 
 
+	{ $as_echo "$as_me:$LINENO: checking whether task_curr() is available" >&5
+$as_echo_n "checking whether task_curr() is available... " >&6; }
+
+
+
+cat confdefs.h - <<_ACEOF >conftest.c
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+
+		#include <linux/sched.h>
+
+int
+main (void)
+{
+
+		task_curr(NULL);
+
+  ;
+  return 0;
+}
+
+_ACEOF
+
+
+	rm -Rf build && mkdir -p build && touch build/conftest.mod.c
+	echo "obj-m := conftest.o" >build/Makefile
+	modpost_flag=''
+	test "x$enable_linux_builtin" = xyes && modpost_flag='modpost=true' # fake modpost stage
+	if { ac_try='cp conftest.c build && make modules -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build $modpost_flag'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  rc=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+ rc=1
+
+
+fi
+
+	rm -Rf build
+
+
+	if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+	else
+		if test "x$enable_linux_builtin" != xyes; then
 
-	{ $as_echo "$as_me:$LINENO: checking whether symbol task_curr is exported" >&5
-$as_echo_n "checking whether symbol task_curr is exported... " >&6; }
 	grep -q -E '[[:space:]]task_curr[[:space:]]' \
 		$LINUX_OBJ/Module*.symvers 2>/dev/null
 	rc=$?
@@ -12861,25 +12921,28 @@ $as_echo_n "checking whether symbol task_curr is exported... " >&6; }
 			grep -q -E "EXPORT_SYMBOL.*(task_curr)" \
 				"$LINUX_OBJ/$file" 2>/dev/null
 			rc=$?
-		        if test $rc -eq 0; then
-		                export=1
-		                break;
-		        fi
+			if test $rc -eq 0; then
+				export=1
+				break;
+			fi
 		done
-		if test $export -eq 0; then
-			{ $as_echo "$as_me:$LINENO: result: no" >&5
-$as_echo "no" >&6; }
+		if test $export -eq 0; then :
+			rc=1
+		else :
+			rc=0
+		fi
+	else :
+		rc=0
+	fi
 
-		else
-			{ $as_echo "$as_me:$LINENO: result: yes" >&5
-$as_echo "yes" >&6; }
+		fi
+		if test $rc -ne 0; then :
 
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_TASK_CURR 1
-_ACEOF
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+		else :
 
-		fi
-	else
 		{ $as_echo "$as_me:$LINENO: result: yes" >&5
 $as_echo "yes" >&6; }
 
@@ -12887,6 +12950,8 @@ cat >>confdefs.h <<\_ACEOF
 #define HAVE_TASK_CURR 1
 _ACEOF
 
+
+		fi
 	fi
 
 
@@ -13092,9 +13157,9 @@ fi
 
 
 
+	{ $as_echo "$as_me:$LINENO: checking whether device_create() is available" >&5
+$as_echo_n "checking whether device_create() is available... " >&6; }
 
-	{ $as_echo "$as_me:$LINENO: checking whether symbol device_create is exported" >&5
-$as_echo_n "checking whether symbol device_create is exported... " >&6; }
 	grep -q -E '[[:space:]]device_create[[:space:]]' \
 		$LINUX_OBJ/Module*.symvers 2>/dev/null
 	rc=$?
@@ -13104,25 +13169,29 @@ $as_echo_n "checking whether symbol device_create is exported... " >&6; }
 			grep -q -E "EXPORT_SYMBOL.*(device_create)" \
 				"$LINUX_OBJ/$file" 2>/dev/null
 			rc=$?
-		        if test $rc -eq 0; then
-		                export=1
-		                break;
-		        fi
+			if test $rc -eq 0; then
+				export=1
+				break;
+			fi
 		done
-		if test $export -eq 0; then
-			{ $as_echo "$as_me:$LINENO: result: no" >&5
+		if test $export -eq 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
 $as_echo "no" >&6; }
 
-		else
-			{ $as_echo "$as_me:$LINENO: result: yes" >&5
+		else :
+
+		{ $as_echo "$as_me:$LINENO: result: yes" >&5
 $as_echo "yes" >&6; }
 
 cat >>confdefs.h <<\_ACEOF
 #define HAVE_DEVICE_CREATE 1
 _ACEOF
 
+
 		fi
-	else
+	else :
+
 		{ $as_echo "$as_me:$LINENO: result: yes" >&5
 $as_echo "yes" >&6; }
 
@@ -13130,6 +13199,7 @@ cat >>confdefs.h <<\_ACEOF
 #define HAVE_DEVICE_CREATE 1
 _ACEOF
 
+
 	fi
 
 
@@ -13203,9 +13273,69 @@ fi
 
 	EXTRA_KCFLAGS="$tmp_flags"
 
+	{ $as_echo "$as_me:$LINENO: checking whether class_device_create() is available" >&5
+$as_echo_n "checking whether class_device_create() is available... " >&6; }
+
+
+
+cat confdefs.h - <<_ACEOF >conftest.c
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+
+		#include <linux/device.h>
+
+int
+main (void)
+{
+
+		class_device_create(NULL, NULL, 0, NULL, NULL);
+
+  ;
+  return 0;
+}
+
+_ACEOF
+
+
+	rm -Rf build && mkdir -p build && touch build/conftest.mod.c
+	echo "obj-m := conftest.o" >build/Makefile
+	modpost_flag=''
+	test "x$enable_linux_builtin" = xyes && modpost_flag='modpost=true' # fake modpost stage
+	if { ac_try='cp conftest.c build && make modules -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build $modpost_flag'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  rc=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+ rc=1
+
+
+fi
+
+	rm -Rf build
+
+
+	if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+	else
+		if test "x$enable_linux_builtin" != xyes; then
 
-	{ $as_echo "$as_me:$LINENO: checking whether symbol class_device_create is exported" >&5
-$as_echo_n "checking whether symbol class_device_create is exported... " >&6; }
 	grep -q -E '[[:space:]]class_device_create[[:space:]]' \
 		$LINUX_OBJ/Module*.symvers 2>/dev/null
 	rc=$?
@@ -13215,38 +13345,103 @@ $as_echo_n "checking whether symbol class_device_create is exported... " >&6; }
 			grep -q -E "EXPORT_SYMBOL.*(class_device_create)" \
 				"$LINUX_OBJ/$file" 2>/dev/null
 			rc=$?
-		        if test $rc -eq 0; then
-		                export=1
-		                break;
-		        fi
+			if test $rc -eq 0; then
+				export=1
+				break;
+			fi
 		done
-		if test $export -eq 0; then
-			{ $as_echo "$as_me:$LINENO: result: no" >&5
+		if test $export -eq 0; then :
+			rc=1
+		else :
+			rc=0
+		fi
+	else :
+		rc=0
+	fi
+
+		fi
+		if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
 $as_echo "no" >&6; }
 
-		else
-			{ $as_echo "$as_me:$LINENO: result: yes" >&5
+		else :
+
+		{ $as_echo "$as_me:$LINENO: result: yes" >&5
 $as_echo "yes" >&6; }
 
 cat >>confdefs.h <<\_ACEOF
 #define HAVE_CLASS_DEVICE_CREATE 1
 _ACEOF
 
+
 		fi
-	else
-		{ $as_echo "$as_me:$LINENO: result: yes" >&5
-$as_echo "yes" >&6; }
+	fi
 
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_CLASS_DEVICE_CREATE 1
+
+	{ $as_echo "$as_me:$LINENO: checking whether set_normalized_timespec() is available as export" >&5
+$as_echo_n "checking whether set_normalized_timespec() is available as export... " >&6; }
+
+
+
+cat confdefs.h - <<_ACEOF >conftest.c
+/* confdefs.h.  */
 _ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
 
-	fi
+
+		#include <linux/time.h>
+
+int
+main (void)
+{
+
+		set_normalized_timespec(NULL, 0, 0);
+
+  ;
+  return 0;
+}
+
+_ACEOF
 
 
+	rm -Rf build && mkdir -p build && touch build/conftest.mod.c
+	echo "obj-m := conftest.o" >build/Makefile
+	modpost_flag=''
+	test "x$enable_linux_builtin" = xyes && modpost_flag='modpost=true' # fake modpost stage
+	if { ac_try='cp conftest.c build && make modules -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build $modpost_flag'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  rc=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+ rc=1
+
+
+fi
+
+	rm -Rf build
+
+
+	if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+	else
+		if test "x$enable_linux_builtin" != xyes; then
 
-	{ $as_echo "$as_me:$LINENO: checking whether symbol set_normalized_timespec is exported" >&5
-$as_echo_n "checking whether symbol set_normalized_timespec is exported... " >&6; }
 	grep -q -E '[[:space:]]set_normalized_timespec[[:space:]]' \
 		$LINUX_OBJ/Module*.symvers 2>/dev/null
 	rc=$?
@@ -13256,25 +13451,28 @@ $as_echo_n "checking whether symbol set_normalized_timespec is exported... " >&6
 			grep -q -E "EXPORT_SYMBOL.*(set_normalized_timespec)" \
 				"$LINUX_OBJ/$file" 2>/dev/null
 			rc=$?
-		        if test $rc -eq 0; then
-		                export=1
-		                break;
-		        fi
+			if test $rc -eq 0; then
+				export=1
+				break;
+			fi
 		done
-		if test $export -eq 0; then
-			{ $as_echo "$as_me:$LINENO: result: no" >&5
-$as_echo "no" >&6; }
+		if test $export -eq 0; then :
+			rc=1
+		else :
+			rc=0
+		fi
+	else :
+		rc=0
+	fi
 
-		else
-			{ $as_echo "$as_me:$LINENO: result: yes" >&5
-$as_echo "yes" >&6; }
+		fi
+		if test $rc -ne 0; then :
 
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_SET_NORMALIZED_TIMESPEC_EXPORT 1
-_ACEOF
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+		else :
 
-		fi
-	else
 		{ $as_echo "$as_me:$LINENO: result: yes" >&5
 $as_echo "yes" >&6; }
 
@@ -13282,6 +13480,8 @@ cat >>confdefs.h <<\_ACEOF
 #define HAVE_SET_NORMALIZED_TIMESPEC_EXPORT 1
 _ACEOF
 
+
+		fi
 	fi
 
 
@@ -13841,9 +14041,69 @@ fi
 
 
 
+	{ $as_echo "$as_me:$LINENO: checking whether monotonic_clock() is available" >&5
+$as_echo_n "checking whether monotonic_clock() is available... " >&6; }
+
+
+
+cat confdefs.h - <<_ACEOF >conftest.c
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+
+		#include <linux/timex.h>
+
+int
+main (void)
+{
+
+		monotonic_clock();
+
+  ;
+  return 0;
+}
+
+_ACEOF
+
+
+	rm -Rf build && mkdir -p build && touch build/conftest.mod.c
+	echo "obj-m := conftest.o" >build/Makefile
+	modpost_flag=''
+	test "x$enable_linux_builtin" = xyes && modpost_flag='modpost=true' # fake modpost stage
+	if { ac_try='cp conftest.c build && make modules -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build $modpost_flag'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  rc=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+ rc=1
+
+
+fi
+
+	rm -Rf build
+
+
+	if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+	else
+		if test "x$enable_linux_builtin" != xyes; then
 
-	{ $as_echo "$as_me:$LINENO: checking whether symbol monotonic_clock is exported" >&5
-$as_echo_n "checking whether symbol monotonic_clock is exported... " >&6; }
 	grep -q -E '[[:space:]]monotonic_clock[[:space:]]' \
 		$LINUX_OBJ/Module*.symvers 2>/dev/null
 	rc=$?
@@ -13853,25 +14113,28 @@ $as_echo_n "checking whether symbol monotonic_clock is exported... " >&6; }
 			grep -q -E "EXPORT_SYMBOL.*(monotonic_clock)" \
 				"$LINUX_OBJ/$file" 2>/dev/null
 			rc=$?
-		        if test $rc -eq 0; then
-		                export=1
-		                break;
-		        fi
+			if test $rc -eq 0; then
+				export=1
+				break;
+			fi
 		done
-		if test $export -eq 0; then
-			{ $as_echo "$as_me:$LINENO: result: no" >&5
-$as_echo "no" >&6; }
+		if test $export -eq 0; then :
+			rc=1
+		else :
+			rc=0
+		fi
+	else :
+		rc=0
+	fi
 
-		else
-			{ $as_echo "$as_me:$LINENO: result: yes" >&5
-$as_echo "yes" >&6; }
+		fi
+		if test $rc -ne 0; then :
 
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_MONOTONIC_CLOCK 1
-_ACEOF
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+		else :
 
-		fi
-	else
 		{ $as_echo "$as_me:$LINENO: result: yes" >&5
 $as_echo "yes" >&6; }
 
@@ -13879,6 +14142,8 @@ cat >>confdefs.h <<\_ACEOF
 #define HAVE_MONOTONIC_CLOCK 1
 _ACEOF
 
+
+		fi
 	fi
 
 
@@ -14226,9 +14491,69 @@ fi
 
 
 
+	{ $as_echo "$as_me:$LINENO: checking whether kallsyms_lookup_name() is available" >&5
+$as_echo_n "checking whether kallsyms_lookup_name() is available... " >&6; }
+
+
+
+cat confdefs.h - <<_ACEOF >conftest.c
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+
+		#include <linux/kallsyms.h>
+
+int
+main (void)
+{
+
+		kallsyms_lookup_name(NULL);
+
+  ;
+  return 0;
+}
+
+_ACEOF
+
+
+	rm -Rf build && mkdir -p build && touch build/conftest.mod.c
+	echo "obj-m := conftest.o" >build/Makefile
+	modpost_flag=''
+	test "x$enable_linux_builtin" = xyes && modpost_flag='modpost=true' # fake modpost stage
+	if { ac_try='cp conftest.c build && make modules -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build $modpost_flag'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  rc=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+ rc=1
+
+
+fi
+
+	rm -Rf build
+
+
+	if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+	else
+		if test "x$enable_linux_builtin" != xyes; then
 
-	{ $as_echo "$as_me:$LINENO: checking whether symbol kallsyms_lookup_name is exported" >&5
-$as_echo_n "checking whether symbol kallsyms_lookup_name is exported... " >&6; }
 	grep -q -E '[[:space:]]kallsyms_lookup_name[[:space:]]' \
 		$LINUX_OBJ/Module*.symvers 2>/dev/null
 	rc=$?
@@ -14238,25 +14563,28 @@ $as_echo_n "checking whether symbol kallsyms_lookup_name is exported... " >&6; }
 			grep -q -E "EXPORT_SYMBOL.*(kallsyms_lookup_name)" \
 				"$LINUX_OBJ/$file" 2>/dev/null
 			rc=$?
-		        if test $rc -eq 0; then
-		                export=1
-		                break;
-		        fi
+			if test $rc -eq 0; then
+				export=1
+				break;
+			fi
 		done
-		if test $export -eq 0; then
-			{ $as_echo "$as_me:$LINENO: result: no" >&5
-$as_echo "no" >&6; }
+		if test $export -eq 0; then :
+			rc=1
+		else :
+			rc=0
+		fi
+	else :
+		rc=0
+	fi
 
-		else
-			{ $as_echo "$as_me:$LINENO: result: yes" >&5
-$as_echo "yes" >&6; }
+		fi
+		if test $rc -ne 0; then :
 
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_KALLSYMS_LOOKUP_NAME 1
-_ACEOF
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+		else :
 
-		fi
-	else
 		{ $as_echo "$as_me:$LINENO: result: yes" >&5
 $as_echo "yes" >&6; }
 
@@ -14264,12 +14592,14 @@ cat >>confdefs.h <<\_ACEOF
 #define HAVE_KALLSYMS_LOOKUP_NAME 1
 _ACEOF
 
+
+		fi
 	fi
 
 
+	{ $as_echo "$as_me:$LINENO: checking whether get_vmalloc_info() is available" >&5
+$as_echo_n "checking whether get_vmalloc_info() is available... " >&6; }
 
-	{ $as_echo "$as_me:$LINENO: checking whether symbol get_vmalloc_info is exported" >&5
-$as_echo_n "checking whether symbol get_vmalloc_info is exported... " >&6; }
 	grep -q -E '[[:space:]]get_vmalloc_info[[:space:]]' \
 		$LINUX_OBJ/Module*.symvers 2>/dev/null
 	rc=$?
@@ -14279,25 +14609,29 @@ $as_echo_n "checking whether symbol get_vmalloc_info is exported... " >&6; }
 			grep -q -E "EXPORT_SYMBOL.*(get_vmalloc_info)" \
 				"$LINUX_OBJ/$file" 2>/dev/null
 			rc=$?
-		        if test $rc -eq 0; then
-		                export=1
-		                break;
-		        fi
+			if test $rc -eq 0; then
+				export=1
+				break;
+			fi
 		done
-		if test $export -eq 0; then
-			{ $as_echo "$as_me:$LINENO: result: no" >&5
+		if test $export -eq 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
 $as_echo "no" >&6; }
 
-		else
-			{ $as_echo "$as_me:$LINENO: result: yes" >&5
+		else :
+
+		{ $as_echo "$as_me:$LINENO: result: yes" >&5
 $as_echo "yes" >&6; }
 
 cat >>confdefs.h <<\_ACEOF
 #define HAVE_GET_VMALLOC_INFO 1
 _ACEOF
 
+
 		fi
-	else
+	else :
+
 		{ $as_echo "$as_me:$LINENO: result: yes" >&5
 $as_echo "yes" >&6; }
 
@@ -14305,6 +14639,7 @@ cat >>confdefs.h <<\_ACEOF
 #define HAVE_GET_VMALLOC_INFO 1
 _ACEOF
 
+
 	fi
 
 
@@ -14326,9 +14661,69 @@ _ACEOF
 $as_echo "no" >&6; }
 	fi
 
+	{ $as_echo "$as_me:$LINENO: checking whether first_online_pgdat() is available" >&5
+$as_echo_n "checking whether first_online_pgdat() is available... " >&6; }
+
+
+
+cat confdefs.h - <<_ACEOF >conftest.c
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+
+		#include <linux/mmzone.h>
+
+int
+main (void)
+{
+
+		first_online_pgdat();
+
+  ;
+  return 0;
+}
+
+_ACEOF
+
+
+	rm -Rf build && mkdir -p build && touch build/conftest.mod.c
+	echo "obj-m := conftest.o" >build/Makefile
+	modpost_flag=''
+	test "x$enable_linux_builtin" = xyes && modpost_flag='modpost=true' # fake modpost stage
+	if { ac_try='cp conftest.c build && make modules -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build $modpost_flag'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  rc=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+ rc=1
+
+
+fi
+
+	rm -Rf build
+
+
+	if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+	else
+		if test "x$enable_linux_builtin" != xyes; then
 
-	{ $as_echo "$as_me:$LINENO: checking whether symbol first_online_pgdat is exported" >&5
-$as_echo_n "checking whether symbol first_online_pgdat is exported... " >&6; }
 	grep -q -E '[[:space:]]first_online_pgdat[[:space:]]' \
 		$LINUX_OBJ/Module*.symvers 2>/dev/null
 	rc=$?
@@ -14338,38 +14733,103 @@ $as_echo_n "checking whether symbol first_online_pgdat is exported... " >&6; }
 			grep -q -E "EXPORT_SYMBOL.*(first_online_pgdat)" \
 				"$LINUX_OBJ/$file" 2>/dev/null
 			rc=$?
-		        if test $rc -eq 0; then
-		                export=1
-		                break;
-		        fi
+			if test $rc -eq 0; then
+				export=1
+				break;
+			fi
 		done
-		if test $export -eq 0; then
-			{ $as_echo "$as_me:$LINENO: result: no" >&5
+		if test $export -eq 0; then :
+			rc=1
+		else :
+			rc=0
+		fi
+	else :
+		rc=0
+	fi
+
+		fi
+		if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
 $as_echo "no" >&6; }
 
-		else
-			{ $as_echo "$as_me:$LINENO: result: yes" >&5
+		else :
+
+		{ $as_echo "$as_me:$LINENO: result: yes" >&5
 $as_echo "yes" >&6; }
 
 cat >>confdefs.h <<\_ACEOF
 #define HAVE_FIRST_ONLINE_PGDAT 1
 _ACEOF
 
+
 		fi
-	else
-		{ $as_echo "$as_me:$LINENO: result: yes" >&5
-$as_echo "yes" >&6; }
+	fi
 
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_FIRST_ONLINE_PGDAT 1
+
+	{ $as_echo "$as_me:$LINENO: checking whether next_online_pgdat() is available" >&5
+$as_echo_n "checking whether next_online_pgdat() is available... " >&6; }
+
+
+
+cat confdefs.h - <<_ACEOF >conftest.c
+/* confdefs.h.  */
 _ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
 
-	fi
+
+		#include <linux/mmzone.h>
+
+int
+main (void)
+{
+
+		next_online_pgdat(NULL);
+
+  ;
+  return 0;
+}
+
+_ACEOF
+
+
+	rm -Rf build && mkdir -p build && touch build/conftest.mod.c
+	echo "obj-m := conftest.o" >build/Makefile
+	modpost_flag=''
+	test "x$enable_linux_builtin" = xyes && modpost_flag='modpost=true' # fake modpost stage
+	if { ac_try='cp conftest.c build && make modules -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build $modpost_flag'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  rc=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+ rc=1
+
+
+fi
+
+	rm -Rf build
 
 
+	if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+	else
+		if test "x$enable_linux_builtin" != xyes; then
 
-	{ $as_echo "$as_me:$LINENO: checking whether symbol next_online_pgdat is exported" >&5
-$as_echo_n "checking whether symbol next_online_pgdat is exported... " >&6; }
 	grep -q -E '[[:space:]]next_online_pgdat[[:space:]]' \
 		$LINUX_OBJ/Module*.symvers 2>/dev/null
 	rc=$?
@@ -14379,38 +14839,103 @@ $as_echo_n "checking whether symbol next_online_pgdat is exported... " >&6; }
 			grep -q -E "EXPORT_SYMBOL.*(next_online_pgdat)" \
 				"$LINUX_OBJ/$file" 2>/dev/null
 			rc=$?
-		        if test $rc -eq 0; then
-		                export=1
-		                break;
-		        fi
+			if test $rc -eq 0; then
+				export=1
+				break;
+			fi
 		done
-		if test $export -eq 0; then
-			{ $as_echo "$as_me:$LINENO: result: no" >&5
+		if test $export -eq 0; then :
+			rc=1
+		else :
+			rc=0
+		fi
+	else :
+		rc=0
+	fi
+
+		fi
+		if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
 $as_echo "no" >&6; }
 
-		else
-			{ $as_echo "$as_me:$LINENO: result: yes" >&5
+		else :
+
+		{ $as_echo "$as_me:$LINENO: result: yes" >&5
 $as_echo "yes" >&6; }
 
 cat >>confdefs.h <<\_ACEOF
 #define HAVE_NEXT_ONLINE_PGDAT 1
 _ACEOF
 
+
 		fi
-	else
-		{ $as_echo "$as_me:$LINENO: result: yes" >&5
-$as_echo "yes" >&6; }
+	fi
 
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_NEXT_ONLINE_PGDAT 1
+
+	{ $as_echo "$as_me:$LINENO: checking whether next_zone() is available" >&5
+$as_echo_n "checking whether next_zone() is available... " >&6; }
+
+
+
+cat confdefs.h - <<_ACEOF >conftest.c
+/* confdefs.h.  */
 _ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
 
-	fi
 
+		#include <linux/mmzone.h>
 
+int
+main (void)
+{
+
+		next_zone(NULL);
+
+  ;
+  return 0;
+}
+
+_ACEOF
+
+
+	rm -Rf build && mkdir -p build && touch build/conftest.mod.c
+	echo "obj-m := conftest.o" >build/Makefile
+	modpost_flag=''
+	test "x$enable_linux_builtin" = xyes && modpost_flag='modpost=true' # fake modpost stage
+	if { ac_try='cp conftest.c build && make modules -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build $modpost_flag'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  rc=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+ rc=1
+
+
+fi
+
+	rm -Rf build
+
+
+	if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+	else
+		if test "x$enable_linux_builtin" != xyes; then
 
-	{ $as_echo "$as_me:$LINENO: checking whether symbol next_zone is exported" >&5
-$as_echo_n "checking whether symbol next_zone is exported... " >&6; }
 	grep -q -E '[[:space:]]next_zone[[:space:]]' \
 		$LINUX_OBJ/Module*.symvers 2>/dev/null
 	rc=$?
@@ -14420,38 +14945,102 @@ $as_echo_n "checking whether symbol next_zone is exported... " >&6; }
 			grep -q -E "EXPORT_SYMBOL.*(next_zone)" \
 				"$LINUX_OBJ/$file" 2>/dev/null
 			rc=$?
-		        if test $rc -eq 0; then
-		                export=1
-		                break;
-		        fi
+			if test $rc -eq 0; then
+				export=1
+				break;
+			fi
 		done
-		if test $export -eq 0; then
-			{ $as_echo "$as_me:$LINENO: result: no" >&5
+		if test $export -eq 0; then :
+			rc=1
+		else :
+			rc=0
+		fi
+	else :
+		rc=0
+	fi
+
+		fi
+		if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
 $as_echo "no" >&6; }
 
-		else
-			{ $as_echo "$as_me:$LINENO: result: yes" >&5
+		else :
+
+		{ $as_echo "$as_me:$LINENO: result: yes" >&5
 $as_echo "yes" >&6; }
 
 cat >>confdefs.h <<\_ACEOF
 #define HAVE_NEXT_ZONE 1
 _ACEOF
 
+
 		fi
-	else
-		{ $as_echo "$as_me:$LINENO: result: yes" >&5
-$as_echo "yes" >&6; }
+	fi
 
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_NEXT_ZONE 1
+
+	{ $as_echo "$as_me:$LINENO: checking whether pgdat_list is available" >&5
+$as_echo_n "checking whether pgdat_list is available... " >&6; }
+
+
+
+cat confdefs.h - <<_ACEOF >conftest.c
+/* confdefs.h.  */
 _ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
 
-	fi
 
+		#include <linux/topology.h>
+		pg_data_t *tmp = pgdat_list;
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+
+_ACEOF
 
 
-	{ $as_echo "$as_me:$LINENO: checking whether symbol pgdat_list is exported" >&5
-$as_echo_n "checking whether symbol pgdat_list is exported... " >&6; }
+	rm -Rf build && mkdir -p build && touch build/conftest.mod.c
+	echo "obj-m := conftest.o" >build/Makefile
+	modpost_flag=''
+	test "x$enable_linux_builtin" = xyes && modpost_flag='modpost=true' # fake modpost stage
+	if { ac_try='cp conftest.c build && make modules -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build $modpost_flag'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  rc=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+ rc=1
+
+
+fi
+
+	rm -Rf build
+
+
+	if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+	else
+		if test "x$enable_linux_builtin" != xyes; then
+
 	grep -q -E '[[:space:]]pgdat_list[[:space:]]' \
 		$LINUX_OBJ/Module*.symvers 2>/dev/null
 	rc=$?
@@ -14461,25 +15050,28 @@ $as_echo_n "checking whether symbol pgdat_list is exported... " >&6; }
 			grep -q -E "EXPORT_SYMBOL.*(pgdat_list)" \
 				"$LINUX_OBJ/$file" 2>/dev/null
 			rc=$?
-		        if test $rc -eq 0; then
-		                export=1
-		                break;
-		        fi
+			if test $rc -eq 0; then
+				export=1
+				break;
+			fi
 		done
-		if test $export -eq 0; then
-			{ $as_echo "$as_me:$LINENO: result: no" >&5
-$as_echo "no" >&6; }
+		if test $export -eq 0; then :
+			rc=1
+		else :
+			rc=0
+		fi
+	else :
+		rc=0
+	fi
 
-		else
-			{ $as_echo "$as_me:$LINENO: result: yes" >&5
-$as_echo "yes" >&6; }
+		fi
+		if test $rc -ne 0; then :
 
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_PGDAT_LIST 1
-_ACEOF
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+		else :
 
-		fi
-	else
 		{ $as_echo "$as_me:$LINENO: result: yes" >&5
 $as_echo "yes" >&6; }
 
@@ -14487,6 +15079,8 @@ cat >>confdefs.h <<\_ACEOF
 #define HAVE_PGDAT_LIST 1
 _ACEOF
 
+
+		fi
 	fi
 
 
@@ -15102,8 +15696,69 @@ cat >>confdefs.h <<\_ACEOF
 _ACEOF
 
 
-		{ $as_echo "$as_me:$LINENO: checking whether symbol get_zone_counts is exported" >&5
-$as_echo_n "checking whether symbol get_zone_counts is exported... " >&6; }
+		{ $as_echo "$as_me:$LINENO: checking whether get_zone_counts() is available" >&5
+$as_echo_n "checking whether get_zone_counts() is available... " >&6; }
+
+
+
+cat confdefs.h - <<_ACEOF >conftest.c
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+
+			#include <linux/mmzone.h>
+
+int
+main (void)
+{
+
+			get_zone_counts(NULL, NULL, NULL);
+
+  ;
+  return 0;
+}
+
+_ACEOF
+
+
+	rm -Rf build && mkdir -p build && touch build/conftest.mod.c
+	echo "obj-m := conftest.o" >build/Makefile
+	modpost_flag=''
+	test "x$enable_linux_builtin" = xyes && modpost_flag='modpost=true' # fake modpost stage
+	if { ac_try='cp conftest.c build && make modules -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build $modpost_flag'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  rc=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+ rc=1
+
+
+fi
+
+	rm -Rf build
+
+
+	if test $rc -ne 0; then :
+
+			{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+	else
+		if test "x$enable_linux_builtin" != xyes; then
+
 	grep -q -E '[[:space:]]get_zone_counts[[:space:]]' \
 		$LINUX_OBJ/Module*.symvers 2>/dev/null
 	rc=$?
@@ -15113,16 +15768,28 @@ $as_echo_n "checking whether symbol get_zone_counts is exported... " >&6; }
 			grep -q -E "EXPORT_SYMBOL.*(get_zone_counts)" \
 				"$LINUX_OBJ/$file" 2>/dev/null
 			rc=$?
-		        if test $rc -eq 0; then
-		                export=1
-		                break;
-		        fi
+			if test $rc -eq 0; then
+				export=1
+				break;
+			fi
 		done
-		if test $export -eq 0; then
+		if test $export -eq 0; then :
+			rc=1
+		else :
+			rc=0
+		fi
+	else :
+		rc=0
+	fi
+
+		fi
+		if test $rc -ne 0; then :
+
 			{ $as_echo "$as_me:$LINENO: result: no" >&5
 $as_echo "no" >&6; }
 
-		else
+		else :
+
 			{ $as_echo "$as_me:$LINENO: result: yes" >&5
 $as_echo "yes" >&6; }
 
@@ -15130,18 +15797,68 @@ cat >>confdefs.h <<\_ACEOF
 #define HAVE_GET_ZONE_COUNTS 1
 _ACEOF
 
+
 		fi
-	else
-		{ $as_echo "$as_me:$LINENO: result: yes" >&5
-$as_echo "yes" >&6; }
+	fi
 
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_GET_ZONE_COUNTS 1
+
+
+
+fi
+
+	rm -Rf build
+
+
+
+	{ $as_echo "$as_me:$LINENO: checking whether user_path_dir() is available" >&5
+$as_echo_n "checking whether user_path_dir() is available... " >&6; }
+
+
+
+cat confdefs.h - <<_ACEOF >conftest.c
+/* confdefs.h.  */
 _ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
 
-	fi
 
+		#include <linux/fcntl.h>
+		#include <linux/namei.h>
+
+int
+main (void)
+{
 
+		user_path_dir(NULL, NULL);
+
+  ;
+  return 0;
+}
+
+_ACEOF
+
+
+	rm -Rf build && mkdir -p build && touch build/conftest.mod.c
+	echo "obj-m := conftest.o" >build/Makefile
+	modpost_flag=''
+	test "x$enable_linux_builtin" = xyes && modpost_flag='modpost=true' # fake modpost stage
+	if { ac_try='cp conftest.c build && make modules -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build $modpost_flag'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  rc=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+ rc=1
 
 
 fi
@@ -15149,10 +15866,14 @@ fi
 	rm -Rf build
 
 
+	if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
 
+	else
+		if test "x$enable_linux_builtin" != xyes; then
 
-	{ $as_echo "$as_me:$LINENO: checking whether symbol user_path_at is exported" >&5
-$as_echo_n "checking whether symbol user_path_at is exported... " >&6; }
 	grep -q -E '[[:space:]]user_path_at[[:space:]]' \
 		$LINUX_OBJ/Module*.symvers 2>/dev/null
 	rc=$?
@@ -15162,38 +15883,104 @@ $as_echo_n "checking whether symbol user_path_at is exported... " >&6; }
 			grep -q -E "EXPORT_SYMBOL.*(user_path_at)" \
 				"$LINUX_OBJ/$file" 2>/dev/null
 			rc=$?
-		        if test $rc -eq 0; then
-		                export=1
-		                break;
-		        fi
+			if test $rc -eq 0; then
+				export=1
+				break;
+			fi
 		done
-		if test $export -eq 0; then
-			{ $as_echo "$as_me:$LINENO: result: no" >&5
+		if test $export -eq 0; then :
+			rc=1
+		else :
+			rc=0
+		fi
+	else :
+		rc=0
+	fi
+
+		fi
+		if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
 $as_echo "no" >&6; }
 
-		else
-			{ $as_echo "$as_me:$LINENO: result: yes" >&5
+		else :
+
+		{ $as_echo "$as_me:$LINENO: result: yes" >&5
 $as_echo "yes" >&6; }
 
 cat >>confdefs.h <<\_ACEOF
 #define HAVE_USER_PATH_DIR 1
 _ACEOF
 
+
 		fi
-	else
-		{ $as_echo "$as_me:$LINENO: result: yes" >&5
-$as_echo "yes" >&6; }
+	fi
 
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_USER_PATH_DIR 1
+
+	{ $as_echo "$as_me:$LINENO: checking whether set_fs_pwd() is available" >&5
+$as_echo_n "checking whether set_fs_pwd() is available... " >&6; }
+
+
+
+cat confdefs.h - <<_ACEOF >conftest.c
+/* confdefs.h.  */
 _ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
 
-	fi
 
+		#include <linux/spinlock.h>
+		#include <linux/fs_struct.h>
 
+int
+main (void)
+{
+
+		(void) set_fs_pwd;
+
+  ;
+  return 0;
+}
+
+_ACEOF
+
+
+	rm -Rf build && mkdir -p build && touch build/conftest.mod.c
+	echo "obj-m := conftest.o" >build/Makefile
+	modpost_flag=''
+	test "x$enable_linux_builtin" = xyes && modpost_flag='modpost=true' # fake modpost stage
+	if { ac_try='cp conftest.c build && make modules -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build $modpost_flag'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  rc=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+ rc=1
+
+
+fi
+
+	rm -Rf build
+
+
+	if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+	else
+		if test "x$enable_linux_builtin" != xyes; then
 
-	{ $as_echo "$as_me:$LINENO: checking whether symbol set_fs_pwd is exported" >&5
-$as_echo_n "checking whether symbol set_fs_pwd is exported... " >&6; }
 	grep -q -E '[[:space:]]set_fs_pwd[[:space:]]' \
 		$LINUX_OBJ/Module*.symvers 2>/dev/null
 	rc=$?
@@ -15203,25 +15990,28 @@ $as_echo_n "checking whether symbol set_fs_pwd is exported... " >&6; }
 			grep -q -E "EXPORT_SYMBOL.*(set_fs_pwd)" \
 				"$LINUX_OBJ/$file" 2>/dev/null
 			rc=$?
-		        if test $rc -eq 0; then
-		                export=1
-		                break;
-		        fi
+			if test $rc -eq 0; then
+				export=1
+				break;
+			fi
 		done
-		if test $export -eq 0; then
-			{ $as_echo "$as_me:$LINENO: result: no" >&5
-$as_echo "no" >&6; }
+		if test $export -eq 0; then :
+			rc=1
+		else :
+			rc=0
+		fi
+	else :
+		rc=0
+	fi
 
-		else
-			{ $as_echo "$as_me:$LINENO: result: yes" >&5
-$as_echo "yes" >&6; }
+		fi
+		if test $rc -ne 0; then :
 
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_SET_FS_PWD 1
-_ACEOF
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+		else :
 
-		fi
-	else
 		{ $as_echo "$as_me:$LINENO: result: yes" >&5
 $as_echo "yes" >&6; }
 
@@ -15229,6 +16019,8 @@ cat >>confdefs.h <<\_ACEOF
 #define HAVE_SET_FS_PWD 1
 _ACEOF
 
+
+		fi
 	fi
 
 
@@ -15431,9 +16223,69 @@ fi
 
 
 
+	{ $as_echo "$as_me:$LINENO: checking whether vfs_fsync() is available" >&5
+$as_echo_n "checking whether vfs_fsync() is available... " >&6; }
+
+
+
+cat confdefs.h - <<_ACEOF >conftest.c
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+
+		#include <linux/fs.h>
+
+int
+main (void)
+{
+
+		(void) vfs_fsync;
+
+  ;
+  return 0;
+}
+
+_ACEOF
+
+
+	rm -Rf build && mkdir -p build && touch build/conftest.mod.c
+	echo "obj-m := conftest.o" >build/Makefile
+	modpost_flag=''
+	test "x$enable_linux_builtin" = xyes && modpost_flag='modpost=true' # fake modpost stage
+	if { ac_try='cp conftest.c build && make modules -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build $modpost_flag'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  rc=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+ rc=1
+
+
+fi
+
+	rm -Rf build
+
+
+	if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+	else
+		if test "x$enable_linux_builtin" != xyes; then
 
-	{ $as_echo "$as_me:$LINENO: checking whether symbol vfs_fsync is exported" >&5
-$as_echo_n "checking whether symbol vfs_fsync is exported... " >&6; }
 	grep -q -E '[[:space:]]vfs_fsync[[:space:]]' \
 		$LINUX_OBJ/Module*.symvers 2>/dev/null
 	rc=$?
@@ -15443,25 +16295,28 @@ $as_echo_n "checking whether symbol vfs_fsync is exported... " >&6; }
 			grep -q -E "EXPORT_SYMBOL.*(vfs_fsync)" \
 				"$LINUX_OBJ/$file" 2>/dev/null
 			rc=$?
-		        if test $rc -eq 0; then
-		                export=1
-		                break;
-		        fi
+			if test $rc -eq 0; then
+				export=1
+				break;
+			fi
 		done
-		if test $export -eq 0; then
-			{ $as_echo "$as_me:$LINENO: result: no" >&5
-$as_echo "no" >&6; }
+		if test $export -eq 0; then :
+			rc=1
+		else :
+			rc=0
+		fi
+	else :
+		rc=0
+	fi
 
-		else
-			{ $as_echo "$as_me:$LINENO: result: yes" >&5
-$as_echo "yes" >&6; }
+		fi
+		if test $rc -ne 0; then :
 
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_VFS_FSYNC 1
-_ACEOF
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+		else :
 
-		fi
-	else
 		{ $as_echo "$as_me:$LINENO: result: yes" >&5
 $as_echo "yes" >&6; }
 
@@ -15469,6 +16324,8 @@ cat >>confdefs.h <<\_ACEOF
 #define HAVE_VFS_FSYNC 1
 _ACEOF
 
+
+		fi
 	fi
 
 
@@ -15679,9 +16536,69 @@ fi
 
 
 
+	{ $as_echo "$as_me:$LINENO: checking whether groups_search() is available" >&5
+$as_echo_n "checking whether groups_search() is available... " >&6; }
+
+
+
+cat confdefs.h - <<_ACEOF >conftest.c
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+
+		#include <linux/cred.h>
+
+int
+main (void)
+{
+
+		groups_search(NULL, 0);
+
+  ;
+  return 0;
+}
+
+_ACEOF
+
+
+	rm -Rf build && mkdir -p build && touch build/conftest.mod.c
+	echo "obj-m := conftest.o" >build/Makefile
+	modpost_flag=''
+	test "x$enable_linux_builtin" = xyes && modpost_flag='modpost=true' # fake modpost stage
+	if { ac_try='cp conftest.c build && make modules -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build $modpost_flag'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  rc=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+ rc=1
+
+
+fi
+
+	rm -Rf build
+
+
+	if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+	else
+		if test "x$enable_linux_builtin" != xyes; then
 
-	{ $as_echo "$as_me:$LINENO: checking whether symbol groups_search is exported" >&5
-$as_echo_n "checking whether symbol groups_search is exported... " >&6; }
 	grep -q -E '[[:space:]]groups_search[[:space:]]' \
 		$LINUX_OBJ/Module*.symvers 2>/dev/null
 	rc=$?
@@ -15691,38 +16608,103 @@ $as_echo_n "checking whether symbol groups_search is exported... " >&6; }
 			grep -q -E "EXPORT_SYMBOL.*(groups_search)" \
 				"$LINUX_OBJ/$file" 2>/dev/null
 			rc=$?
-		        if test $rc -eq 0; then
-		                export=1
-		                break;
-		        fi
+			if test $rc -eq 0; then
+				export=1
+				break;
+			fi
 		done
-		if test $export -eq 0; then
-			{ $as_echo "$as_me:$LINENO: result: no" >&5
+		if test $export -eq 0; then :
+			rc=1
+		else :
+			rc=0
+		fi
+	else :
+		rc=0
+	fi
+
+		fi
+		if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
 $as_echo "no" >&6; }
 
-		else
-			{ $as_echo "$as_me:$LINENO: result: yes" >&5
+		else :
+
+		{ $as_echo "$as_me:$LINENO: result: yes" >&5
 $as_echo "yes" >&6; }
 
 cat >>confdefs.h <<\_ACEOF
 #define HAVE_GROUPS_SEARCH 1
 _ACEOF
 
+
 		fi
-	else
-		{ $as_echo "$as_me:$LINENO: result: yes" >&5
-$as_echo "yes" >&6; }
+	fi
 
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_GROUPS_SEARCH 1
+
+	{ $as_echo "$as_me:$LINENO: checking whether __put_task_struct() is available" >&5
+$as_echo_n "checking whether __put_task_struct() is available... " >&6; }
+
+
+
+cat confdefs.h - <<_ACEOF >conftest.c
+/* confdefs.h.  */
 _ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
 
-	fi
 
+		#include <linux/sched.h>
+
+int
+main (void)
+{
 
+		__put_task_struct(NULL);
+
+  ;
+  return 0;
+}
+
+_ACEOF
+
+
+	rm -Rf build && mkdir -p build && touch build/conftest.mod.c
+	echo "obj-m := conftest.o" >build/Makefile
+	modpost_flag=''
+	test "x$enable_linux_builtin" = xyes && modpost_flag='modpost=true' # fake modpost stage
+	if { ac_try='cp conftest.c build && make modules -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build $modpost_flag'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  rc=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+ rc=1
+
+
+fi
+
+	rm -Rf build
+
+
+	if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+	else
+		if test "x$enable_linux_builtin" != xyes; then
 
-	{ $as_echo "$as_me:$LINENO: checking whether symbol __put_task_struct is exported" >&5
-$as_echo_n "checking whether symbol __put_task_struct is exported... " >&6; }
 	grep -q -E '[[:space:]]__put_task_struct[[:space:]]' \
 		$LINUX_OBJ/Module*.symvers 2>/dev/null
 	rc=$?
@@ -15732,25 +16714,28 @@ $as_echo_n "checking whether symbol __put_task_struct is exported... " >&6; }
 			grep -q -E "EXPORT_SYMBOL.*(__put_task_struct)" \
 				"$LINUX_OBJ/$file" 2>/dev/null
 			rc=$?
-		        if test $rc -eq 0; then
-		                export=1
-		                break;
-		        fi
+			if test $rc -eq 0; then
+				export=1
+				break;
+			fi
 		done
-		if test $export -eq 0; then
-			{ $as_echo "$as_me:$LINENO: result: no" >&5
-$as_echo "no" >&6; }
+		if test $export -eq 0; then :
+			rc=1
+		else :
+			rc=0
+		fi
+	else :
+		rc=0
+	fi
 
-		else
-			{ $as_echo "$as_me:$LINENO: result: yes" >&5
-$as_echo "yes" >&6; }
+		fi
+		if test $rc -ne 0; then :
 
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_PUT_TASK_STRUCT 1
-_ACEOF
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+		else :
 
-		fi
-	else
 		{ $as_echo "$as_me:$LINENO: result: yes" >&5
 $as_echo "yes" >&6; }
 
@@ -15758,6 +16743,8 @@ cat >>confdefs.h <<\_ACEOF
 #define HAVE_PUT_TASK_STRUCT 1
 _ACEOF
 
+
+		fi
 	fi
 
 
@@ -15828,9 +16815,69 @@ fi
 
 
 
+	{ $as_echo "$as_me:$LINENO: checking whether kvasprintf() is available" >&5
+$as_echo_n "checking whether kvasprintf() is available... " >&6; }
+
+
+
+cat confdefs.h - <<_ACEOF >conftest.c
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+
+		#include <linux/kernel.h>
+
+int
+main (void)
+{
+
+		kvasprintf(0, NULL, *((va_list*)NULL));
+
+  ;
+  return 0;
+}
+
+_ACEOF
+
+
+	rm -Rf build && mkdir -p build && touch build/conftest.mod.c
+	echo "obj-m := conftest.o" >build/Makefile
+	modpost_flag=''
+	test "x$enable_linux_builtin" = xyes && modpost_flag='modpost=true' # fake modpost stage
+	if { ac_try='cp conftest.c build && make modules -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build $modpost_flag'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  rc=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+ rc=1
+
+
+fi
+
+	rm -Rf build
+
+
+	if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+	else
+		if test "x$enable_linux_builtin" != xyes; then
 
-	{ $as_echo "$as_me:$LINENO: checking whether symbol kvasprintf is exported" >&5
-$as_echo_n "checking whether symbol kvasprintf is exported... " >&6; }
 	grep -q -E '[[:space:]]kvasprintf[[:space:]]' \
 		$LINUX_OBJ/Module*.symvers 2>/dev/null
 	rc=$?
@@ -15840,38 +16887,102 @@ $as_echo_n "checking whether symbol kvasprintf is exported... " >&6; }
 			grep -q -E "EXPORT_SYMBOL.*(kvasprintf)" \
 				"$LINUX_OBJ/$file" 2>/dev/null
 			rc=$?
-		        if test $rc -eq 0; then
-		                export=1
-		                break;
-		        fi
+			if test $rc -eq 0; then
+				export=1
+				break;
+			fi
 		done
-		if test $export -eq 0; then
-			{ $as_echo "$as_me:$LINENO: result: no" >&5
+		if test $export -eq 0; then :
+			rc=1
+		else :
+			rc=0
+		fi
+	else :
+		rc=0
+	fi
+
+		fi
+		if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
 $as_echo "no" >&6; }
 
-		else
-			{ $as_echo "$as_me:$LINENO: result: yes" >&5
+		else :
+
+		{ $as_echo "$as_me:$LINENO: result: yes" >&5
 $as_echo "yes" >&6; }
 
 cat >>confdefs.h <<\_ACEOF
 #define HAVE_KVASPRINTF 1
 _ACEOF
 
+
 		fi
-	else
-		{ $as_echo "$as_me:$LINENO: result: yes" >&5
-$as_echo "yes" >&6; }
+	fi
+
+
+	{ $as_echo "$as_me:$LINENO: checking whether rwsem_is_locked() acquires sem->wait_lock" >&5
+$as_echo_n "checking whether rwsem_is_locked() acquires sem->wait_lock... " >&6; }
+
+
+
+cat confdefs.h - <<_ACEOF >conftest.c
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+
+		#include <linux/rwsem.h>
+		int rwsem_is_locked(struct rw_semaphore *sem) { return 0; }
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
 
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_KVASPRINTF 1
 _ACEOF
 
-	fi
 
+	rm -Rf build && mkdir -p build && touch build/conftest.mod.c
+	echo "obj-m := conftest.o" >build/Makefile
+	modpost_flag=''
+	test "x$enable_linux_builtin" = xyes && modpost_flag='modpost=true' # fake modpost stage
+	if { ac_try='cp conftest.c build && make modules -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build $modpost_flag'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  rc=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+ rc=1
+
+
+fi
+
+	rm -Rf build
+
+
+	if test $rc -ne 0; then :
 
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+	else
+		if test "x$enable_linux_builtin" != xyes; then
 
-	{ $as_echo "$as_me:$LINENO: checking whether symbol rwsem_is_locked is exported" >&5
-$as_echo_n "checking whether symbol rwsem_is_locked is exported... " >&6; }
 	grep -q -E '[[:space:]]rwsem_is_locked[[:space:]]' \
 		$LINUX_OBJ/Module*.symvers 2>/dev/null
 	rc=$?
@@ -15881,38 +16992,104 @@ $as_echo_n "checking whether symbol rwsem_is_locked is exported... " >&6; }
 			grep -q -E "EXPORT_SYMBOL.*(rwsem_is_locked)" \
 				"$LINUX_OBJ/$file" 2>/dev/null
 			rc=$?
-		        if test $rc -eq 0; then
-		                export=1
-		                break;
-		        fi
+			if test $rc -eq 0; then
+				export=1
+				break;
+			fi
 		done
-		if test $export -eq 0; then
-			{ $as_echo "$as_me:$LINENO: result: no" >&5
+		if test $export -eq 0; then :
+			rc=1
+		else :
+			rc=0
+		fi
+	else :
+		rc=0
+	fi
+
+		fi
+		if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
 $as_echo "no" >&6; }
 
-		else
-			{ $as_echo "$as_me:$LINENO: result: yes" >&5
+		else :
+
+		{ $as_echo "$as_me:$LINENO: result: yes" >&5
 $as_echo "yes" >&6; }
 
 cat >>confdefs.h <<\_ACEOF
 #define RWSEM_IS_LOCKED_TAKES_WAIT_LOCK 1
 _ACEOF
 
+
 		fi
-	else
-		{ $as_echo "$as_me:$LINENO: result: yes" >&5
-$as_echo "yes" >&6; }
+	fi
 
-cat >>confdefs.h <<\_ACEOF
-#define RWSEM_IS_LOCKED_TAKES_WAIT_LOCK 1
+
+
+	{ $as_echo "$as_me:$LINENO: checking whether invalidate_inodes() is available" >&5
+$as_echo_n "checking whether invalidate_inodes() is available... " >&6; }
+
+
+
+cat confdefs.h - <<_ACEOF >conftest.c
+/* confdefs.h.  */
 _ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
 
-	fi
 
+		#include <linux/fs.h>
 
+int
+main (void)
+{
+
+		invalidate_inodes;
+
+  ;
+  return 0;
+}
+
+_ACEOF
+
+
+	rm -Rf build && mkdir -p build && touch build/conftest.mod.c
+	echo "obj-m := conftest.o" >build/Makefile
+	modpost_flag=''
+	test "x$enable_linux_builtin" = xyes && modpost_flag='modpost=true' # fake modpost stage
+	if { ac_try='cp conftest.c build && make modules -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build $modpost_flag'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  rc=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+ rc=1
+
+
+fi
+
+	rm -Rf build
+
+
+	if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+	else
+		if test "x$enable_linux_builtin" != xyes; then
 
-	{ $as_echo "$as_me:$LINENO: checking whether symbol invalidate_inodes is exported" >&5
-$as_echo_n "checking whether symbol invalidate_inodes is exported... " >&6; }
 	grep -q -E '[[:space:]]invalidate_inodes[[:space:]]' \
 		$LINUX_OBJ/Module*.symvers 2>/dev/null
 	rc=$?
@@ -15922,36 +17099,103 @@ $as_echo_n "checking whether symbol invalidate_inodes is exported... " >&6; }
 			grep -q -E "EXPORT_SYMBOL.*(invalidate_inodes)" \
 				"$LINUX_OBJ/$file" 2>/dev/null
 			rc=$?
-		        if test $rc -eq 0; then
-		                export=1
-		                break;
-		        fi
+			if test $rc -eq 0; then
+				export=1
+				break;
+			fi
 		done
-		if test $export -eq 0; then
-			{ $as_echo "$as_me:$LINENO: result: no" >&5
+		if test $export -eq 0; then :
+			rc=1
+		else :
+			rc=0
+		fi
+	else :
+		rc=0
+	fi
+
+		fi
+		if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
 $as_echo "no" >&6; }
 
-		else
-			{ $as_echo "$as_me:$LINENO: result: yes" >&5
+		else :
+
+		{ $as_echo "$as_me:$LINENO: result: yes" >&5
 $as_echo "yes" >&6; }
 
 cat >>confdefs.h <<\_ACEOF
 #define HAVE_INVALIDATE_INODES 1
 _ACEOF
 
+
 		fi
-	else
-		{ $as_echo "$as_me:$LINENO: result: yes" >&5
-$as_echo "yes" >&6; }
+	fi
 
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_INVALIDATE_INODES 1
+
+	{ $as_echo "$as_me:$LINENO: checking whether invalidate_inodes_check() is available" >&5
+$as_echo_n "checking whether invalidate_inodes_check() is available... " >&6; }
+
+
+
+cat confdefs.h - <<_ACEOF >conftest.c
+/* confdefs.h.  */
 _ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
 
-	fi
 
-	{ $as_echo "$as_me:$LINENO: checking whether symbol invalidate_inodes_check is exported" >&5
-$as_echo_n "checking whether symbol invalidate_inodes_check is exported... " >&6; }
+		#include <linux/fs.h>
+
+int
+main (void)
+{
+
+		invalidate_inodes_check(NULL, 0);
+
+  ;
+  return 0;
+}
+
+_ACEOF
+
+
+	rm -Rf build && mkdir -p build && touch build/conftest.mod.c
+	echo "obj-m := conftest.o" >build/Makefile
+	modpost_flag=''
+	test "x$enable_linux_builtin" = xyes && modpost_flag='modpost=true' # fake modpost stage
+	if { ac_try='cp conftest.c build && make modules -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build $modpost_flag'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  rc=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+ rc=1
+
+
+fi
+
+	rm -Rf build
+
+
+	if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+	else
+		if test "x$enable_linux_builtin" != xyes; then
+
 	grep -q -E '[[:space:]]invalidate_inodes_check[[:space:]]' \
 		$LINUX_OBJ/Module*.symvers 2>/dev/null
 	rc=$?
@@ -15961,25 +17205,28 @@ $as_echo_n "checking whether symbol invalidate_inodes_check is exported... " >&6
 			grep -q -E "EXPORT_SYMBOL.*(invalidate_inodes_check)" \
 				"$LINUX_OBJ/$file" 2>/dev/null
 			rc=$?
-		        if test $rc -eq 0; then
-		                export=1
-		                break;
-		        fi
+			if test $rc -eq 0; then
+				export=1
+				break;
+			fi
 		done
-		if test $export -eq 0; then
-			{ $as_echo "$as_me:$LINENO: result: no" >&5
-$as_echo "no" >&6; }
+		if test $export -eq 0; then :
+			rc=1
+		else :
+			rc=0
+		fi
+	else :
+		rc=0
+	fi
 
-		else
-			{ $as_echo "$as_me:$LINENO: result: yes" >&5
-$as_echo "yes" >&6; }
+		fi
+		if test $rc -ne 0; then :
 
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_INVALIDATE_INODES_CHECK 1
-_ACEOF
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+		else :
 
-		fi
-	else
 		{ $as_echo "$as_me:$LINENO: result: yes" >&5
 $as_echo "yes" >&6; }
 
@@ -15987,6 +17234,8 @@ cat >>confdefs.h <<\_ACEOF
 #define HAVE_INVALIDATE_INODES_CHECK 1
 _ACEOF
 
+
+		fi
 	fi
 
 
@@ -16056,9 +17305,69 @@ fi
 
 
 
+	{ $as_echo "$as_me:$LINENO: checking whether shrink_dcache_memory() is available" >&5
+$as_echo_n "checking whether shrink_dcache_memory() is available... " >&6; }
+
+
+
+cat confdefs.h - <<_ACEOF >conftest.c
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+
+		#include <linux/dcache.h>
+
+int
+main (void)
+{
+
+		shrink_dcache_memory(0, 0);
+
+  ;
+  return 0;
+}
+
+_ACEOF
+
+
+	rm -Rf build && mkdir -p build && touch build/conftest.mod.c
+	echo "obj-m := conftest.o" >build/Makefile
+	modpost_flag=''
+	test "x$enable_linux_builtin" = xyes && modpost_flag='modpost=true' # fake modpost stage
+	if { ac_try='cp conftest.c build && make modules -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build $modpost_flag'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  rc=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+ rc=1
+
+
+fi
+
+	rm -Rf build
+
+
+	if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+	else
+		if test "x$enable_linux_builtin" != xyes; then
 
-	{ $as_echo "$as_me:$LINENO: checking whether symbol shrink_dcache_memory is exported" >&5
-$as_echo_n "checking whether symbol shrink_dcache_memory is exported... " >&6; }
 	grep -q -E '[[:space:]]shrink_dcache_memory[[:space:]]' \
 		$LINUX_OBJ/Module*.symvers 2>/dev/null
 	rc=$?
@@ -16068,38 +17377,103 @@ $as_echo_n "checking whether symbol shrink_dcache_memory is exported... " >&6; }
 			grep -q -E "EXPORT_SYMBOL.*(shrink_dcache_memory)" \
 				"$LINUX_OBJ/$file" 2>/dev/null
 			rc=$?
-		        if test $rc -eq 0; then
-		                export=1
-		                break;
-		        fi
+			if test $rc -eq 0; then
+				export=1
+				break;
+			fi
 		done
-		if test $export -eq 0; then
-			{ $as_echo "$as_me:$LINENO: result: no" >&5
+		if test $export -eq 0; then :
+			rc=1
+		else :
+			rc=0
+		fi
+	else :
+		rc=0
+	fi
+
+		fi
+		if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
 $as_echo "no" >&6; }
 
-		else
-			{ $as_echo "$as_me:$LINENO: result: yes" >&5
+		else :
+
+		{ $as_echo "$as_me:$LINENO: result: yes" >&5
 $as_echo "yes" >&6; }
 
 cat >>confdefs.h <<\_ACEOF
 #define HAVE_SHRINK_DCACHE_MEMORY 1
 _ACEOF
 
+
 		fi
-	else
-		{ $as_echo "$as_me:$LINENO: result: yes" >&5
-$as_echo "yes" >&6; }
+	fi
 
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_SHRINK_DCACHE_MEMORY 1
+
+	{ $as_echo "$as_me:$LINENO: checking whether shrink_icache_memory() is available" >&5
+$as_echo_n "checking whether shrink_icache_memory() is available... " >&6; }
+
+
+
+cat confdefs.h - <<_ACEOF >conftest.c
+/* confdefs.h.  */
 _ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
 
-	fi
+
+		#include <linux/dcache.h>
+
+int
+main (void)
+{
+
+		shrink_icache_memory(0, 0);
+
+  ;
+  return 0;
+}
+
+_ACEOF
+
+
+	rm -Rf build && mkdir -p build && touch build/conftest.mod.c
+	echo "obj-m := conftest.o" >build/Makefile
+	modpost_flag=''
+	test "x$enable_linux_builtin" = xyes && modpost_flag='modpost=true' # fake modpost stage
+	if { ac_try='cp conftest.c build && make modules -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build $modpost_flag'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  rc=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+ rc=1
+
+
+fi
+
+	rm -Rf build
 
 
+	if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+	else
+		if test "x$enable_linux_builtin" != xyes; then
 
-	{ $as_echo "$as_me:$LINENO: checking whether symbol shrink_icache_memory is exported" >&5
-$as_echo_n "checking whether symbol shrink_icache_memory is exported... " >&6; }
 	grep -q -E '[[:space:]]shrink_icache_memory[[:space:]]' \
 		$LINUX_OBJ/Module*.symvers 2>/dev/null
 	rc=$?
@@ -16109,25 +17483,28 @@ $as_echo_n "checking whether symbol shrink_icache_memory is exported... " >&6; }
 			grep -q -E "EXPORT_SYMBOL.*(shrink_icache_memory)" \
 				"$LINUX_OBJ/$file" 2>/dev/null
 			rc=$?
-		        if test $rc -eq 0; then
-		                export=1
-		                break;
-		        fi
+			if test $rc -eq 0; then
+				export=1
+				break;
+			fi
 		done
-		if test $export -eq 0; then
-			{ $as_echo "$as_me:$LINENO: result: no" >&5
-$as_echo "no" >&6; }
+		if test $export -eq 0; then :
+			rc=1
+		else :
+			rc=0
+		fi
+	else :
+		rc=0
+	fi
 
-		else
-			{ $as_echo "$as_me:$LINENO: result: yes" >&5
-$as_echo "yes" >&6; }
+		fi
+		if test $rc -ne 0; then :
 
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_SHRINK_ICACHE_MEMORY 1
-_ACEOF
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+		else :
 
-		fi
-	else
 		{ $as_echo "$as_me:$LINENO: result: yes" >&5
 $as_echo "yes" >&6; }
 
@@ -16135,6 +17512,8 @@ cat >>confdefs.h <<\_ACEOF
 #define HAVE_SHRINK_ICACHE_MEMORY 1
 _ACEOF
 
+
+		fi
 	fi
 
 
@@ -16146,10 +17525,10 @@ $as_echo_n "checking whether symbol kern_path_parent exists in header... " >&6;
 	for file in include/linux/namei.h; do
 		grep -q "int kern_path_parent(const char \*, struct nameidata \*)" "$LINUX/$file" 2>/dev/null
 		rc=$?
-	        if test $rc -eq 0; then
-	                header=1
-	                break;
-	        fi
+		if test $rc -eq 0; then
+			header=1
+			break;
+		fi
 	done
 	if test $header -eq 0; then
 		{ $as_echo "$as_me:$LINENO: result: no" >&5
@@ -16166,9 +17545,69 @@ _ACEOF
 	fi
 
 
+	{ $as_echo "$as_me:$LINENO: checking whether kern_path_parent() is available" >&5
+$as_echo_n "checking whether kern_path_parent() is available... " >&6; }
+
+
+
+cat confdefs.h - <<_ACEOF >conftest.c
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+
+		#include <linux/namei.h>
+
+int
+main (void)
+{
+
+		kern_path_parent(NULL, NULL);
+
+  ;
+  return 0;
+}
+
+_ACEOF
+
+
+	rm -Rf build && mkdir -p build && touch build/conftest.mod.c
+	echo "obj-m := conftest.o" >build/Makefile
+	modpost_flag=''
+	test "x$enable_linux_builtin" = xyes && modpost_flag='modpost=true' # fake modpost stage
+	if { ac_try='cp conftest.c build && make modules -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build $modpost_flag'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  rc=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+ rc=1
+
+
+fi
+
+	rm -Rf build
+
+
+	if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+	else
+		if test "x$enable_linux_builtin" != xyes; then
 
-	{ $as_echo "$as_me:$LINENO: checking whether symbol kern_path_parent is exported" >&5
-$as_echo_n "checking whether symbol kern_path_parent is exported... " >&6; }
 	grep -q -E '[[:space:]]kern_path_parent[[:space:]]' \
 		$LINUX_OBJ/Module*.symvers 2>/dev/null
 	rc=$?
@@ -16178,25 +17617,28 @@ $as_echo_n "checking whether symbol kern_path_parent is exported... " >&6; }
 			grep -q -E "EXPORT_SYMBOL.*(kern_path_parent)" \
 				"$LINUX_OBJ/$file" 2>/dev/null
 			rc=$?
-		        if test $rc -eq 0; then
-		                export=1
-		                break;
-		        fi
+			if test $rc -eq 0; then
+				export=1
+				break;
+			fi
 		done
-		if test $export -eq 0; then
-			{ $as_echo "$as_me:$LINENO: result: no" >&5
-$as_echo "no" >&6; }
+		if test $export -eq 0; then :
+			rc=1
+		else :
+			rc=0
+		fi
+	else :
+		rc=0
+	fi
 
-		else
-			{ $as_echo "$as_me:$LINENO: result: yes" >&5
-$as_echo "yes" >&6; }
+		fi
+		if test $rc -ne 0; then :
 
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_KERN_PATH_PARENT_SYMBOL 1
-_ACEOF
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+		else :
 
-		fi
-	else
 		{ $as_echo "$as_me:$LINENO: result: yes" >&5
 $as_echo "yes" >&6; }
 
@@ -16204,6 +17646,8 @@ cat >>confdefs.h <<\_ACEOF
 #define HAVE_KERN_PATH_PARENT_SYMBOL 1
 _ACEOF
 
+
+		fi
 	fi
 
 
@@ -16524,7 +17968,7 @@ $as_echo_n "checking kernel source directory... " >&6; }
 			sourcelink=$(readlink -f "$headersdir")
 		else
 			sourcelink=$(ls -1d /usr/src/kernels/* \
-				     /usr/src/linux-* \
+			             /usr/src/linux-* \
 			             2>/dev/null | grep -v obj | tail -1)
 		fi
 
@@ -17601,9 +19045,69 @@ fi
 
 
 
+	{ $as_echo "$as_me:$LINENO: checking whether task_curr() is available" >&5
+$as_echo_n "checking whether task_curr() is available... " >&6; }
+
+
+
+cat confdefs.h - <<_ACEOF >conftest.c
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+
+		#include <linux/sched.h>
+
+int
+main (void)
+{
+
+		task_curr(NULL);
+
+  ;
+  return 0;
+}
+
+_ACEOF
+
+
+	rm -Rf build && mkdir -p build && touch build/conftest.mod.c
+	echo "obj-m := conftest.o" >build/Makefile
+	modpost_flag=''
+	test "x$enable_linux_builtin" = xyes && modpost_flag='modpost=true' # fake modpost stage
+	if { ac_try='cp conftest.c build && make modules -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build $modpost_flag'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  rc=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+ rc=1
+
+
+fi
+
+	rm -Rf build
+
+
+	if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+	else
+		if test "x$enable_linux_builtin" != xyes; then
 
-	{ $as_echo "$as_me:$LINENO: checking whether symbol task_curr is exported" >&5
-$as_echo_n "checking whether symbol task_curr is exported... " >&6; }
 	grep -q -E '[[:space:]]task_curr[[:space:]]' \
 		$LINUX_OBJ/Module*.symvers 2>/dev/null
 	rc=$?
@@ -17613,25 +19117,28 @@ $as_echo_n "checking whether symbol task_curr is exported... " >&6; }
 			grep -q -E "EXPORT_SYMBOL.*(task_curr)" \
 				"$LINUX_OBJ/$file" 2>/dev/null
 			rc=$?
-		        if test $rc -eq 0; then
-		                export=1
-		                break;
-		        fi
+			if test $rc -eq 0; then
+				export=1
+				break;
+			fi
 		done
-		if test $export -eq 0; then
-			{ $as_echo "$as_me:$LINENO: result: no" >&5
-$as_echo "no" >&6; }
+		if test $export -eq 0; then :
+			rc=1
+		else :
+			rc=0
+		fi
+	else :
+		rc=0
+	fi
 
-		else
-			{ $as_echo "$as_me:$LINENO: result: yes" >&5
-$as_echo "yes" >&6; }
+		fi
+		if test $rc -ne 0; then :
 
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_TASK_CURR 1
-_ACEOF
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+		else :
 
-		fi
-	else
 		{ $as_echo "$as_me:$LINENO: result: yes" >&5
 $as_echo "yes" >&6; }
 
@@ -17639,6 +19146,8 @@ cat >>confdefs.h <<\_ACEOF
 #define HAVE_TASK_CURR 1
 _ACEOF
 
+
+		fi
 	fi
 
 
@@ -17844,9 +19353,9 @@ fi
 
 
 
+	{ $as_echo "$as_me:$LINENO: checking whether device_create() is available" >&5
+$as_echo_n "checking whether device_create() is available... " >&6; }
 
-	{ $as_echo "$as_me:$LINENO: checking whether symbol device_create is exported" >&5
-$as_echo_n "checking whether symbol device_create is exported... " >&6; }
 	grep -q -E '[[:space:]]device_create[[:space:]]' \
 		$LINUX_OBJ/Module*.symvers 2>/dev/null
 	rc=$?
@@ -17856,25 +19365,29 @@ $as_echo_n "checking whether symbol device_create is exported... " >&6; }
 			grep -q -E "EXPORT_SYMBOL.*(device_create)" \
 				"$LINUX_OBJ/$file" 2>/dev/null
 			rc=$?
-		        if test $rc -eq 0; then
-		                export=1
-		                break;
-		        fi
+			if test $rc -eq 0; then
+				export=1
+				break;
+			fi
 		done
-		if test $export -eq 0; then
-			{ $as_echo "$as_me:$LINENO: result: no" >&5
+		if test $export -eq 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
 $as_echo "no" >&6; }
 
-		else
-			{ $as_echo "$as_me:$LINENO: result: yes" >&5
+		else :
+
+		{ $as_echo "$as_me:$LINENO: result: yes" >&5
 $as_echo "yes" >&6; }
 
 cat >>confdefs.h <<\_ACEOF
 #define HAVE_DEVICE_CREATE 1
 _ACEOF
 
+
 		fi
-	else
+	else :
+
 		{ $as_echo "$as_me:$LINENO: result: yes" >&5
 $as_echo "yes" >&6; }
 
@@ -17882,6 +19395,7 @@ cat >>confdefs.h <<\_ACEOF
 #define HAVE_DEVICE_CREATE 1
 _ACEOF
 
+
 	fi
 
 
@@ -17955,9 +19469,69 @@ fi
 
 	EXTRA_KCFLAGS="$tmp_flags"
 
+	{ $as_echo "$as_me:$LINENO: checking whether class_device_create() is available" >&5
+$as_echo_n "checking whether class_device_create() is available... " >&6; }
+
+
+
+cat confdefs.h - <<_ACEOF >conftest.c
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+
+		#include <linux/device.h>
+
+int
+main (void)
+{
+
+		class_device_create(NULL, NULL, 0, NULL, NULL);
+
+  ;
+  return 0;
+}
+
+_ACEOF
+
+
+	rm -Rf build && mkdir -p build && touch build/conftest.mod.c
+	echo "obj-m := conftest.o" >build/Makefile
+	modpost_flag=''
+	test "x$enable_linux_builtin" = xyes && modpost_flag='modpost=true' # fake modpost stage
+	if { ac_try='cp conftest.c build && make modules -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build $modpost_flag'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  rc=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+ rc=1
+
+
+fi
+
+	rm -Rf build
+
+
+	if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+	else
+		if test "x$enable_linux_builtin" != xyes; then
 
-	{ $as_echo "$as_me:$LINENO: checking whether symbol class_device_create is exported" >&5
-$as_echo_n "checking whether symbol class_device_create is exported... " >&6; }
 	grep -q -E '[[:space:]]class_device_create[[:space:]]' \
 		$LINUX_OBJ/Module*.symvers 2>/dev/null
 	rc=$?
@@ -17967,38 +19541,103 @@ $as_echo_n "checking whether symbol class_device_create is exported... " >&6; }
 			grep -q -E "EXPORT_SYMBOL.*(class_device_create)" \
 				"$LINUX_OBJ/$file" 2>/dev/null
 			rc=$?
-		        if test $rc -eq 0; then
-		                export=1
-		                break;
-		        fi
+			if test $rc -eq 0; then
+				export=1
+				break;
+			fi
 		done
-		if test $export -eq 0; then
-			{ $as_echo "$as_me:$LINENO: result: no" >&5
+		if test $export -eq 0; then :
+			rc=1
+		else :
+			rc=0
+		fi
+	else :
+		rc=0
+	fi
+
+		fi
+		if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
 $as_echo "no" >&6; }
 
-		else
-			{ $as_echo "$as_me:$LINENO: result: yes" >&5
+		else :
+
+		{ $as_echo "$as_me:$LINENO: result: yes" >&5
 $as_echo "yes" >&6; }
 
 cat >>confdefs.h <<\_ACEOF
 #define HAVE_CLASS_DEVICE_CREATE 1
 _ACEOF
 
+
 		fi
-	else
-		{ $as_echo "$as_me:$LINENO: result: yes" >&5
-$as_echo "yes" >&6; }
+	fi
 
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_CLASS_DEVICE_CREATE 1
+
+	{ $as_echo "$as_me:$LINENO: checking whether set_normalized_timespec() is available as export" >&5
+$as_echo_n "checking whether set_normalized_timespec() is available as export... " >&6; }
+
+
+
+cat confdefs.h - <<_ACEOF >conftest.c
+/* confdefs.h.  */
 _ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
 
-	fi
+
+		#include <linux/time.h>
+
+int
+main (void)
+{
+
+		set_normalized_timespec(NULL, 0, 0);
+
+  ;
+  return 0;
+}
+
+_ACEOF
 
 
+	rm -Rf build && mkdir -p build && touch build/conftest.mod.c
+	echo "obj-m := conftest.o" >build/Makefile
+	modpost_flag=''
+	test "x$enable_linux_builtin" = xyes && modpost_flag='modpost=true' # fake modpost stage
+	if { ac_try='cp conftest.c build && make modules -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build $modpost_flag'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  rc=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+ rc=1
+
+
+fi
+
+	rm -Rf build
+
+
+	if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+	else
+		if test "x$enable_linux_builtin" != xyes; then
 
-	{ $as_echo "$as_me:$LINENO: checking whether symbol set_normalized_timespec is exported" >&5
-$as_echo_n "checking whether symbol set_normalized_timespec is exported... " >&6; }
 	grep -q -E '[[:space:]]set_normalized_timespec[[:space:]]' \
 		$LINUX_OBJ/Module*.symvers 2>/dev/null
 	rc=$?
@@ -18008,25 +19647,28 @@ $as_echo_n "checking whether symbol set_normalized_timespec is exported... " >&6
 			grep -q -E "EXPORT_SYMBOL.*(set_normalized_timespec)" \
 				"$LINUX_OBJ/$file" 2>/dev/null
 			rc=$?
-		        if test $rc -eq 0; then
-		                export=1
-		                break;
-		        fi
+			if test $rc -eq 0; then
+				export=1
+				break;
+			fi
 		done
-		if test $export -eq 0; then
-			{ $as_echo "$as_me:$LINENO: result: no" >&5
-$as_echo "no" >&6; }
+		if test $export -eq 0; then :
+			rc=1
+		else :
+			rc=0
+		fi
+	else :
+		rc=0
+	fi
 
-		else
-			{ $as_echo "$as_me:$LINENO: result: yes" >&5
-$as_echo "yes" >&6; }
+		fi
+		if test $rc -ne 0; then :
 
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_SET_NORMALIZED_TIMESPEC_EXPORT 1
-_ACEOF
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+		else :
 
-		fi
-	else
 		{ $as_echo "$as_me:$LINENO: result: yes" >&5
 $as_echo "yes" >&6; }
 
@@ -18034,6 +19676,8 @@ cat >>confdefs.h <<\_ACEOF
 #define HAVE_SET_NORMALIZED_TIMESPEC_EXPORT 1
 _ACEOF
 
+
+		fi
 	fi
 
 
@@ -18593,9 +20237,69 @@ fi
 
 
 
+	{ $as_echo "$as_me:$LINENO: checking whether monotonic_clock() is available" >&5
+$as_echo_n "checking whether monotonic_clock() is available... " >&6; }
+
+
+
+cat confdefs.h - <<_ACEOF >conftest.c
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+
+		#include <linux/timex.h>
+
+int
+main (void)
+{
+
+		monotonic_clock();
+
+  ;
+  return 0;
+}
+
+_ACEOF
+
+
+	rm -Rf build && mkdir -p build && touch build/conftest.mod.c
+	echo "obj-m := conftest.o" >build/Makefile
+	modpost_flag=''
+	test "x$enable_linux_builtin" = xyes && modpost_flag='modpost=true' # fake modpost stage
+	if { ac_try='cp conftest.c build && make modules -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build $modpost_flag'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  rc=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+ rc=1
+
+
+fi
+
+	rm -Rf build
+
+
+	if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+	else
+		if test "x$enable_linux_builtin" != xyes; then
 
-	{ $as_echo "$as_me:$LINENO: checking whether symbol monotonic_clock is exported" >&5
-$as_echo_n "checking whether symbol monotonic_clock is exported... " >&6; }
 	grep -q -E '[[:space:]]monotonic_clock[[:space:]]' \
 		$LINUX_OBJ/Module*.symvers 2>/dev/null
 	rc=$?
@@ -18605,25 +20309,28 @@ $as_echo_n "checking whether symbol monotonic_clock is exported... " >&6; }
 			grep -q -E "EXPORT_SYMBOL.*(monotonic_clock)" \
 				"$LINUX_OBJ/$file" 2>/dev/null
 			rc=$?
-		        if test $rc -eq 0; then
-		                export=1
-		                break;
-		        fi
+			if test $rc -eq 0; then
+				export=1
+				break;
+			fi
 		done
-		if test $export -eq 0; then
-			{ $as_echo "$as_me:$LINENO: result: no" >&5
-$as_echo "no" >&6; }
+		if test $export -eq 0; then :
+			rc=1
+		else :
+			rc=0
+		fi
+	else :
+		rc=0
+	fi
 
-		else
-			{ $as_echo "$as_me:$LINENO: result: yes" >&5
-$as_echo "yes" >&6; }
+		fi
+		if test $rc -ne 0; then :
 
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_MONOTONIC_CLOCK 1
-_ACEOF
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+		else :
 
-		fi
-	else
 		{ $as_echo "$as_me:$LINENO: result: yes" >&5
 $as_echo "yes" >&6; }
 
@@ -18631,6 +20338,8 @@ cat >>confdefs.h <<\_ACEOF
 #define HAVE_MONOTONIC_CLOCK 1
 _ACEOF
 
+
+		fi
 	fi
 
 
@@ -18978,9 +20687,69 @@ fi
 
 
 
+	{ $as_echo "$as_me:$LINENO: checking whether kallsyms_lookup_name() is available" >&5
+$as_echo_n "checking whether kallsyms_lookup_name() is available... " >&6; }
+
+
+
+cat confdefs.h - <<_ACEOF >conftest.c
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+
+		#include <linux/kallsyms.h>
+
+int
+main (void)
+{
+
+		kallsyms_lookup_name(NULL);
+
+  ;
+  return 0;
+}
+
+_ACEOF
+
+
+	rm -Rf build && mkdir -p build && touch build/conftest.mod.c
+	echo "obj-m := conftest.o" >build/Makefile
+	modpost_flag=''
+	test "x$enable_linux_builtin" = xyes && modpost_flag='modpost=true' # fake modpost stage
+	if { ac_try='cp conftest.c build && make modules -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build $modpost_flag'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  rc=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+ rc=1
+
+
+fi
+
+	rm -Rf build
+
+
+	if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+	else
+		if test "x$enable_linux_builtin" != xyes; then
 
-	{ $as_echo "$as_me:$LINENO: checking whether symbol kallsyms_lookup_name is exported" >&5
-$as_echo_n "checking whether symbol kallsyms_lookup_name is exported... " >&6; }
 	grep -q -E '[[:space:]]kallsyms_lookup_name[[:space:]]' \
 		$LINUX_OBJ/Module*.symvers 2>/dev/null
 	rc=$?
@@ -18990,25 +20759,28 @@ $as_echo_n "checking whether symbol kallsyms_lookup_name is exported... " >&6; }
 			grep -q -E "EXPORT_SYMBOL.*(kallsyms_lookup_name)" \
 				"$LINUX_OBJ/$file" 2>/dev/null
 			rc=$?
-		        if test $rc -eq 0; then
-		                export=1
-		                break;
-		        fi
+			if test $rc -eq 0; then
+				export=1
+				break;
+			fi
 		done
-		if test $export -eq 0; then
-			{ $as_echo "$as_me:$LINENO: result: no" >&5
-$as_echo "no" >&6; }
+		if test $export -eq 0; then :
+			rc=1
+		else :
+			rc=0
+		fi
+	else :
+		rc=0
+	fi
 
-		else
-			{ $as_echo "$as_me:$LINENO: result: yes" >&5
-$as_echo "yes" >&6; }
+		fi
+		if test $rc -ne 0; then :
 
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_KALLSYMS_LOOKUP_NAME 1
-_ACEOF
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+		else :
 
-		fi
-	else
 		{ $as_echo "$as_me:$LINENO: result: yes" >&5
 $as_echo "yes" >&6; }
 
@@ -19016,12 +20788,14 @@ cat >>confdefs.h <<\_ACEOF
 #define HAVE_KALLSYMS_LOOKUP_NAME 1
 _ACEOF
 
+
+		fi
 	fi
 
 
+	{ $as_echo "$as_me:$LINENO: checking whether get_vmalloc_info() is available" >&5
+$as_echo_n "checking whether get_vmalloc_info() is available... " >&6; }
 
-	{ $as_echo "$as_me:$LINENO: checking whether symbol get_vmalloc_info is exported" >&5
-$as_echo_n "checking whether symbol get_vmalloc_info is exported... " >&6; }
 	grep -q -E '[[:space:]]get_vmalloc_info[[:space:]]' \
 		$LINUX_OBJ/Module*.symvers 2>/dev/null
 	rc=$?
@@ -19031,25 +20805,29 @@ $as_echo_n "checking whether symbol get_vmalloc_info is exported... " >&6; }
 			grep -q -E "EXPORT_SYMBOL.*(get_vmalloc_info)" \
 				"$LINUX_OBJ/$file" 2>/dev/null
 			rc=$?
-		        if test $rc -eq 0; then
-		                export=1
-		                break;
-		        fi
+			if test $rc -eq 0; then
+				export=1
+				break;
+			fi
 		done
-		if test $export -eq 0; then
-			{ $as_echo "$as_me:$LINENO: result: no" >&5
+		if test $export -eq 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
 $as_echo "no" >&6; }
 
-		else
-			{ $as_echo "$as_me:$LINENO: result: yes" >&5
+		else :
+
+		{ $as_echo "$as_me:$LINENO: result: yes" >&5
 $as_echo "yes" >&6; }
 
 cat >>confdefs.h <<\_ACEOF
 #define HAVE_GET_VMALLOC_INFO 1
 _ACEOF
 
+
 		fi
-	else
+	else :
+
 		{ $as_echo "$as_me:$LINENO: result: yes" >&5
 $as_echo "yes" >&6; }
 
@@ -19057,6 +20835,7 @@ cat >>confdefs.h <<\_ACEOF
 #define HAVE_GET_VMALLOC_INFO 1
 _ACEOF
 
+
 	fi
 
 
@@ -19078,9 +20857,69 @@ _ACEOF
 $as_echo "no" >&6; }
 	fi
 
+	{ $as_echo "$as_me:$LINENO: checking whether first_online_pgdat() is available" >&5
+$as_echo_n "checking whether first_online_pgdat() is available... " >&6; }
+
+
+
+cat confdefs.h - <<_ACEOF >conftest.c
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+
+		#include <linux/mmzone.h>
+
+int
+main (void)
+{
+
+		first_online_pgdat();
+
+  ;
+  return 0;
+}
+
+_ACEOF
+
+
+	rm -Rf build && mkdir -p build && touch build/conftest.mod.c
+	echo "obj-m := conftest.o" >build/Makefile
+	modpost_flag=''
+	test "x$enable_linux_builtin" = xyes && modpost_flag='modpost=true' # fake modpost stage
+	if { ac_try='cp conftest.c build && make modules -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build $modpost_flag'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  rc=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+ rc=1
+
+
+fi
+
+	rm -Rf build
+
+
+	if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+	else
+		if test "x$enable_linux_builtin" != xyes; then
 
-	{ $as_echo "$as_me:$LINENO: checking whether symbol first_online_pgdat is exported" >&5
-$as_echo_n "checking whether symbol first_online_pgdat is exported... " >&6; }
 	grep -q -E '[[:space:]]first_online_pgdat[[:space:]]' \
 		$LINUX_OBJ/Module*.symvers 2>/dev/null
 	rc=$?
@@ -19090,38 +20929,103 @@ $as_echo_n "checking whether symbol first_online_pgdat is exported... " >&6; }
 			grep -q -E "EXPORT_SYMBOL.*(first_online_pgdat)" \
 				"$LINUX_OBJ/$file" 2>/dev/null
 			rc=$?
-		        if test $rc -eq 0; then
-		                export=1
-		                break;
-		        fi
+			if test $rc -eq 0; then
+				export=1
+				break;
+			fi
 		done
-		if test $export -eq 0; then
-			{ $as_echo "$as_me:$LINENO: result: no" >&5
+		if test $export -eq 0; then :
+			rc=1
+		else :
+			rc=0
+		fi
+	else :
+		rc=0
+	fi
+
+		fi
+		if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
 $as_echo "no" >&6; }
 
-		else
-			{ $as_echo "$as_me:$LINENO: result: yes" >&5
+		else :
+
+		{ $as_echo "$as_me:$LINENO: result: yes" >&5
 $as_echo "yes" >&6; }
 
 cat >>confdefs.h <<\_ACEOF
 #define HAVE_FIRST_ONLINE_PGDAT 1
 _ACEOF
 
+
 		fi
-	else
-		{ $as_echo "$as_me:$LINENO: result: yes" >&5
-$as_echo "yes" >&6; }
+	fi
 
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_FIRST_ONLINE_PGDAT 1
+
+	{ $as_echo "$as_me:$LINENO: checking whether next_online_pgdat() is available" >&5
+$as_echo_n "checking whether next_online_pgdat() is available... " >&6; }
+
+
+
+cat confdefs.h - <<_ACEOF >conftest.c
+/* confdefs.h.  */
 _ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
 
-	fi
+
+		#include <linux/mmzone.h>
+
+int
+main (void)
+{
+
+		next_online_pgdat(NULL);
+
+  ;
+  return 0;
+}
+
+_ACEOF
+
+
+	rm -Rf build && mkdir -p build && touch build/conftest.mod.c
+	echo "obj-m := conftest.o" >build/Makefile
+	modpost_flag=''
+	test "x$enable_linux_builtin" = xyes && modpost_flag='modpost=true' # fake modpost stage
+	if { ac_try='cp conftest.c build && make modules -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build $modpost_flag'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  rc=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+ rc=1
+
+
+fi
+
+	rm -Rf build
 
 
+	if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+	else
+		if test "x$enable_linux_builtin" != xyes; then
 
-	{ $as_echo "$as_me:$LINENO: checking whether symbol next_online_pgdat is exported" >&5
-$as_echo_n "checking whether symbol next_online_pgdat is exported... " >&6; }
 	grep -q -E '[[:space:]]next_online_pgdat[[:space:]]' \
 		$LINUX_OBJ/Module*.symvers 2>/dev/null
 	rc=$?
@@ -19131,38 +21035,103 @@ $as_echo_n "checking whether symbol next_online_pgdat is exported... " >&6; }
 			grep -q -E "EXPORT_SYMBOL.*(next_online_pgdat)" \
 				"$LINUX_OBJ/$file" 2>/dev/null
 			rc=$?
-		        if test $rc -eq 0; then
-		                export=1
-		                break;
-		        fi
+			if test $rc -eq 0; then
+				export=1
+				break;
+			fi
 		done
-		if test $export -eq 0; then
-			{ $as_echo "$as_me:$LINENO: result: no" >&5
+		if test $export -eq 0; then :
+			rc=1
+		else :
+			rc=0
+		fi
+	else :
+		rc=0
+	fi
+
+		fi
+		if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
 $as_echo "no" >&6; }
 
-		else
-			{ $as_echo "$as_me:$LINENO: result: yes" >&5
+		else :
+
+		{ $as_echo "$as_me:$LINENO: result: yes" >&5
 $as_echo "yes" >&6; }
 
 cat >>confdefs.h <<\_ACEOF
 #define HAVE_NEXT_ONLINE_PGDAT 1
 _ACEOF
 
+
 		fi
-	else
-		{ $as_echo "$as_me:$LINENO: result: yes" >&5
-$as_echo "yes" >&6; }
+	fi
 
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_NEXT_ONLINE_PGDAT 1
+
+	{ $as_echo "$as_me:$LINENO: checking whether next_zone() is available" >&5
+$as_echo_n "checking whether next_zone() is available... " >&6; }
+
+
+
+cat confdefs.h - <<_ACEOF >conftest.c
+/* confdefs.h.  */
 _ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
 
-	fi
 
+		#include <linux/mmzone.h>
 
+int
+main (void)
+{
+
+		next_zone(NULL);
+
+  ;
+  return 0;
+}
+
+_ACEOF
+
+
+	rm -Rf build && mkdir -p build && touch build/conftest.mod.c
+	echo "obj-m := conftest.o" >build/Makefile
+	modpost_flag=''
+	test "x$enable_linux_builtin" = xyes && modpost_flag='modpost=true' # fake modpost stage
+	if { ac_try='cp conftest.c build && make modules -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build $modpost_flag'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  rc=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+ rc=1
+
+
+fi
+
+	rm -Rf build
+
+
+	if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+	else
+		if test "x$enable_linux_builtin" != xyes; then
 
-	{ $as_echo "$as_me:$LINENO: checking whether symbol next_zone is exported" >&5
-$as_echo_n "checking whether symbol next_zone is exported... " >&6; }
 	grep -q -E '[[:space:]]next_zone[[:space:]]' \
 		$LINUX_OBJ/Module*.symvers 2>/dev/null
 	rc=$?
@@ -19172,38 +21141,102 @@ $as_echo_n "checking whether symbol next_zone is exported... " >&6; }
 			grep -q -E "EXPORT_SYMBOL.*(next_zone)" \
 				"$LINUX_OBJ/$file" 2>/dev/null
 			rc=$?
-		        if test $rc -eq 0; then
-		                export=1
-		                break;
-		        fi
+			if test $rc -eq 0; then
+				export=1
+				break;
+			fi
 		done
-		if test $export -eq 0; then
-			{ $as_echo "$as_me:$LINENO: result: no" >&5
+		if test $export -eq 0; then :
+			rc=1
+		else :
+			rc=0
+		fi
+	else :
+		rc=0
+	fi
+
+		fi
+		if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
 $as_echo "no" >&6; }
 
-		else
-			{ $as_echo "$as_me:$LINENO: result: yes" >&5
+		else :
+
+		{ $as_echo "$as_me:$LINENO: result: yes" >&5
 $as_echo "yes" >&6; }
 
 cat >>confdefs.h <<\_ACEOF
 #define HAVE_NEXT_ZONE 1
 _ACEOF
 
+
 		fi
-	else
-		{ $as_echo "$as_me:$LINENO: result: yes" >&5
-$as_echo "yes" >&6; }
+	fi
 
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_NEXT_ZONE 1
+
+	{ $as_echo "$as_me:$LINENO: checking whether pgdat_list is available" >&5
+$as_echo_n "checking whether pgdat_list is available... " >&6; }
+
+
+
+cat confdefs.h - <<_ACEOF >conftest.c
+/* confdefs.h.  */
 _ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
 
-	fi
 
+		#include <linux/topology.h>
+		pg_data_t *tmp = pgdat_list;
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+
+_ACEOF
 
 
-	{ $as_echo "$as_me:$LINENO: checking whether symbol pgdat_list is exported" >&5
-$as_echo_n "checking whether symbol pgdat_list is exported... " >&6; }
+	rm -Rf build && mkdir -p build && touch build/conftest.mod.c
+	echo "obj-m := conftest.o" >build/Makefile
+	modpost_flag=''
+	test "x$enable_linux_builtin" = xyes && modpost_flag='modpost=true' # fake modpost stage
+	if { ac_try='cp conftest.c build && make modules -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build $modpost_flag'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  rc=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+ rc=1
+
+
+fi
+
+	rm -Rf build
+
+
+	if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+	else
+		if test "x$enable_linux_builtin" != xyes; then
+
 	grep -q -E '[[:space:]]pgdat_list[[:space:]]' \
 		$LINUX_OBJ/Module*.symvers 2>/dev/null
 	rc=$?
@@ -19213,25 +21246,28 @@ $as_echo_n "checking whether symbol pgdat_list is exported... " >&6; }
 			grep -q -E "EXPORT_SYMBOL.*(pgdat_list)" \
 				"$LINUX_OBJ/$file" 2>/dev/null
 			rc=$?
-		        if test $rc -eq 0; then
-		                export=1
-		                break;
-		        fi
+			if test $rc -eq 0; then
+				export=1
+				break;
+			fi
 		done
-		if test $export -eq 0; then
-			{ $as_echo "$as_me:$LINENO: result: no" >&5
-$as_echo "no" >&6; }
+		if test $export -eq 0; then :
+			rc=1
+		else :
+			rc=0
+		fi
+	else :
+		rc=0
+	fi
 
-		else
-			{ $as_echo "$as_me:$LINENO: result: yes" >&5
-$as_echo "yes" >&6; }
+		fi
+		if test $rc -ne 0; then :
 
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_PGDAT_LIST 1
-_ACEOF
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+		else :
 
-		fi
-	else
 		{ $as_echo "$as_me:$LINENO: result: yes" >&5
 $as_echo "yes" >&6; }
 
@@ -19239,6 +21275,8 @@ cat >>confdefs.h <<\_ACEOF
 #define HAVE_PGDAT_LIST 1
 _ACEOF
 
+
+		fi
 	fi
 
 
@@ -19854,8 +21892,69 @@ cat >>confdefs.h <<\_ACEOF
 _ACEOF
 
 
-		{ $as_echo "$as_me:$LINENO: checking whether symbol get_zone_counts is exported" >&5
-$as_echo_n "checking whether symbol get_zone_counts is exported... " >&6; }
+		{ $as_echo "$as_me:$LINENO: checking whether get_zone_counts() is available" >&5
+$as_echo_n "checking whether get_zone_counts() is available... " >&6; }
+
+
+
+cat confdefs.h - <<_ACEOF >conftest.c
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+
+			#include <linux/mmzone.h>
+
+int
+main (void)
+{
+
+			get_zone_counts(NULL, NULL, NULL);
+
+  ;
+  return 0;
+}
+
+_ACEOF
+
+
+	rm -Rf build && mkdir -p build && touch build/conftest.mod.c
+	echo "obj-m := conftest.o" >build/Makefile
+	modpost_flag=''
+	test "x$enable_linux_builtin" = xyes && modpost_flag='modpost=true' # fake modpost stage
+	if { ac_try='cp conftest.c build && make modules -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build $modpost_flag'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  rc=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+ rc=1
+
+
+fi
+
+	rm -Rf build
+
+
+	if test $rc -ne 0; then :
+
+			{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+	else
+		if test "x$enable_linux_builtin" != xyes; then
+
 	grep -q -E '[[:space:]]get_zone_counts[[:space:]]' \
 		$LINUX_OBJ/Module*.symvers 2>/dev/null
 	rc=$?
@@ -19865,16 +21964,28 @@ $as_echo_n "checking whether symbol get_zone_counts is exported... " >&6; }
 			grep -q -E "EXPORT_SYMBOL.*(get_zone_counts)" \
 				"$LINUX_OBJ/$file" 2>/dev/null
 			rc=$?
-		        if test $rc -eq 0; then
-		                export=1
-		                break;
-		        fi
+			if test $rc -eq 0; then
+				export=1
+				break;
+			fi
 		done
-		if test $export -eq 0; then
+		if test $export -eq 0; then :
+			rc=1
+		else :
+			rc=0
+		fi
+	else :
+		rc=0
+	fi
+
+		fi
+		if test $rc -ne 0; then :
+
 			{ $as_echo "$as_me:$LINENO: result: no" >&5
 $as_echo "no" >&6; }
 
-		else
+		else :
+
 			{ $as_echo "$as_me:$LINENO: result: yes" >&5
 $as_echo "yes" >&6; }
 
@@ -19882,18 +21993,68 @@ cat >>confdefs.h <<\_ACEOF
 #define HAVE_GET_ZONE_COUNTS 1
 _ACEOF
 
+
 		fi
-	else
-		{ $as_echo "$as_me:$LINENO: result: yes" >&5
-$as_echo "yes" >&6; }
+	fi
 
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_GET_ZONE_COUNTS 1
+
+
+
+fi
+
+	rm -Rf build
+
+
+
+	{ $as_echo "$as_me:$LINENO: checking whether user_path_dir() is available" >&5
+$as_echo_n "checking whether user_path_dir() is available... " >&6; }
+
+
+
+cat confdefs.h - <<_ACEOF >conftest.c
+/* confdefs.h.  */
 _ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
 
-	fi
 
+		#include <linux/fcntl.h>
+		#include <linux/namei.h>
+
+int
+main (void)
+{
 
+		user_path_dir(NULL, NULL);
+
+  ;
+  return 0;
+}
+
+_ACEOF
+
+
+	rm -Rf build && mkdir -p build && touch build/conftest.mod.c
+	echo "obj-m := conftest.o" >build/Makefile
+	modpost_flag=''
+	test "x$enable_linux_builtin" = xyes && modpost_flag='modpost=true' # fake modpost stage
+	if { ac_try='cp conftest.c build && make modules -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build $modpost_flag'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  rc=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+ rc=1
 
 
 fi
@@ -19901,10 +22062,14 @@ fi
 	rm -Rf build
 
 
+	if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
 
+	else
+		if test "x$enable_linux_builtin" != xyes; then
 
-	{ $as_echo "$as_me:$LINENO: checking whether symbol user_path_at is exported" >&5
-$as_echo_n "checking whether symbol user_path_at is exported... " >&6; }
 	grep -q -E '[[:space:]]user_path_at[[:space:]]' \
 		$LINUX_OBJ/Module*.symvers 2>/dev/null
 	rc=$?
@@ -19914,38 +22079,104 @@ $as_echo_n "checking whether symbol user_path_at is exported... " >&6; }
 			grep -q -E "EXPORT_SYMBOL.*(user_path_at)" \
 				"$LINUX_OBJ/$file" 2>/dev/null
 			rc=$?
-		        if test $rc -eq 0; then
-		                export=1
-		                break;
-		        fi
+			if test $rc -eq 0; then
+				export=1
+				break;
+			fi
 		done
-		if test $export -eq 0; then
-			{ $as_echo "$as_me:$LINENO: result: no" >&5
+		if test $export -eq 0; then :
+			rc=1
+		else :
+			rc=0
+		fi
+	else :
+		rc=0
+	fi
+
+		fi
+		if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
 $as_echo "no" >&6; }
 
-		else
-			{ $as_echo "$as_me:$LINENO: result: yes" >&5
+		else :
+
+		{ $as_echo "$as_me:$LINENO: result: yes" >&5
 $as_echo "yes" >&6; }
 
 cat >>confdefs.h <<\_ACEOF
 #define HAVE_USER_PATH_DIR 1
 _ACEOF
 
+
 		fi
-	else
-		{ $as_echo "$as_me:$LINENO: result: yes" >&5
-$as_echo "yes" >&6; }
+	fi
 
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_USER_PATH_DIR 1
+
+	{ $as_echo "$as_me:$LINENO: checking whether set_fs_pwd() is available" >&5
+$as_echo_n "checking whether set_fs_pwd() is available... " >&6; }
+
+
+
+cat confdefs.h - <<_ACEOF >conftest.c
+/* confdefs.h.  */
 _ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
 
-	fi
 
+		#include <linux/spinlock.h>
+		#include <linux/fs_struct.h>
 
+int
+main (void)
+{
+
+		(void) set_fs_pwd;
+
+  ;
+  return 0;
+}
+
+_ACEOF
+
+
+	rm -Rf build && mkdir -p build && touch build/conftest.mod.c
+	echo "obj-m := conftest.o" >build/Makefile
+	modpost_flag=''
+	test "x$enable_linux_builtin" = xyes && modpost_flag='modpost=true' # fake modpost stage
+	if { ac_try='cp conftest.c build && make modules -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build $modpost_flag'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  rc=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+ rc=1
+
+
+fi
+
+	rm -Rf build
+
+
+	if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+	else
+		if test "x$enable_linux_builtin" != xyes; then
 
-	{ $as_echo "$as_me:$LINENO: checking whether symbol set_fs_pwd is exported" >&5
-$as_echo_n "checking whether symbol set_fs_pwd is exported... " >&6; }
 	grep -q -E '[[:space:]]set_fs_pwd[[:space:]]' \
 		$LINUX_OBJ/Module*.symvers 2>/dev/null
 	rc=$?
@@ -19955,25 +22186,28 @@ $as_echo_n "checking whether symbol set_fs_pwd is exported... " >&6; }
 			grep -q -E "EXPORT_SYMBOL.*(set_fs_pwd)" \
 				"$LINUX_OBJ/$file" 2>/dev/null
 			rc=$?
-		        if test $rc -eq 0; then
-		                export=1
-		                break;
-		        fi
+			if test $rc -eq 0; then
+				export=1
+				break;
+			fi
 		done
-		if test $export -eq 0; then
-			{ $as_echo "$as_me:$LINENO: result: no" >&5
-$as_echo "no" >&6; }
+		if test $export -eq 0; then :
+			rc=1
+		else :
+			rc=0
+		fi
+	else :
+		rc=0
+	fi
 
-		else
-			{ $as_echo "$as_me:$LINENO: result: yes" >&5
-$as_echo "yes" >&6; }
+		fi
+		if test $rc -ne 0; then :
 
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_SET_FS_PWD 1
-_ACEOF
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+		else :
 
-		fi
-	else
 		{ $as_echo "$as_me:$LINENO: result: yes" >&5
 $as_echo "yes" >&6; }
 
@@ -19981,6 +22215,8 @@ cat >>confdefs.h <<\_ACEOF
 #define HAVE_SET_FS_PWD 1
 _ACEOF
 
+
+		fi
 	fi
 
 
@@ -20183,9 +22419,69 @@ fi
 
 
 
+	{ $as_echo "$as_me:$LINENO: checking whether vfs_fsync() is available" >&5
+$as_echo_n "checking whether vfs_fsync() is available... " >&6; }
+
+
+
+cat confdefs.h - <<_ACEOF >conftest.c
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+
+		#include <linux/fs.h>
+
+int
+main (void)
+{
+
+		(void) vfs_fsync;
+
+  ;
+  return 0;
+}
+
+_ACEOF
+
+
+	rm -Rf build && mkdir -p build && touch build/conftest.mod.c
+	echo "obj-m := conftest.o" >build/Makefile
+	modpost_flag=''
+	test "x$enable_linux_builtin" = xyes && modpost_flag='modpost=true' # fake modpost stage
+	if { ac_try='cp conftest.c build && make modules -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build $modpost_flag'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  rc=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+ rc=1
+
+
+fi
+
+	rm -Rf build
+
+
+	if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+	else
+		if test "x$enable_linux_builtin" != xyes; then
 
-	{ $as_echo "$as_me:$LINENO: checking whether symbol vfs_fsync is exported" >&5
-$as_echo_n "checking whether symbol vfs_fsync is exported... " >&6; }
 	grep -q -E '[[:space:]]vfs_fsync[[:space:]]' \
 		$LINUX_OBJ/Module*.symvers 2>/dev/null
 	rc=$?
@@ -20195,25 +22491,28 @@ $as_echo_n "checking whether symbol vfs_fsync is exported... " >&6; }
 			grep -q -E "EXPORT_SYMBOL.*(vfs_fsync)" \
 				"$LINUX_OBJ/$file" 2>/dev/null
 			rc=$?
-		        if test $rc -eq 0; then
-		                export=1
-		                break;
-		        fi
+			if test $rc -eq 0; then
+				export=1
+				break;
+			fi
 		done
-		if test $export -eq 0; then
-			{ $as_echo "$as_me:$LINENO: result: no" >&5
-$as_echo "no" >&6; }
+		if test $export -eq 0; then :
+			rc=1
+		else :
+			rc=0
+		fi
+	else :
+		rc=0
+	fi
 
-		else
-			{ $as_echo "$as_me:$LINENO: result: yes" >&5
-$as_echo "yes" >&6; }
+		fi
+		if test $rc -ne 0; then :
 
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_VFS_FSYNC 1
-_ACEOF
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+		else :
 
-		fi
-	else
 		{ $as_echo "$as_me:$LINENO: result: yes" >&5
 $as_echo "yes" >&6; }
 
@@ -20221,6 +22520,8 @@ cat >>confdefs.h <<\_ACEOF
 #define HAVE_VFS_FSYNC 1
 _ACEOF
 
+
+		fi
 	fi
 
 
@@ -20431,9 +22732,69 @@ fi
 
 
 
+	{ $as_echo "$as_me:$LINENO: checking whether groups_search() is available" >&5
+$as_echo_n "checking whether groups_search() is available... " >&6; }
+
+
+
+cat confdefs.h - <<_ACEOF >conftest.c
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+
+		#include <linux/cred.h>
+
+int
+main (void)
+{
+
+		groups_search(NULL, 0);
+
+  ;
+  return 0;
+}
+
+_ACEOF
+
+
+	rm -Rf build && mkdir -p build && touch build/conftest.mod.c
+	echo "obj-m := conftest.o" >build/Makefile
+	modpost_flag=''
+	test "x$enable_linux_builtin" = xyes && modpost_flag='modpost=true' # fake modpost stage
+	if { ac_try='cp conftest.c build && make modules -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build $modpost_flag'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  rc=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+ rc=1
+
+
+fi
+
+	rm -Rf build
+
+
+	if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+	else
+		if test "x$enable_linux_builtin" != xyes; then
 
-	{ $as_echo "$as_me:$LINENO: checking whether symbol groups_search is exported" >&5
-$as_echo_n "checking whether symbol groups_search is exported... " >&6; }
 	grep -q -E '[[:space:]]groups_search[[:space:]]' \
 		$LINUX_OBJ/Module*.symvers 2>/dev/null
 	rc=$?
@@ -20443,38 +22804,103 @@ $as_echo_n "checking whether symbol groups_search is exported... " >&6; }
 			grep -q -E "EXPORT_SYMBOL.*(groups_search)" \
 				"$LINUX_OBJ/$file" 2>/dev/null
 			rc=$?
-		        if test $rc -eq 0; then
-		                export=1
-		                break;
-		        fi
+			if test $rc -eq 0; then
+				export=1
+				break;
+			fi
 		done
-		if test $export -eq 0; then
-			{ $as_echo "$as_me:$LINENO: result: no" >&5
+		if test $export -eq 0; then :
+			rc=1
+		else :
+			rc=0
+		fi
+	else :
+		rc=0
+	fi
+
+		fi
+		if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
 $as_echo "no" >&6; }
 
-		else
-			{ $as_echo "$as_me:$LINENO: result: yes" >&5
+		else :
+
+		{ $as_echo "$as_me:$LINENO: result: yes" >&5
 $as_echo "yes" >&6; }
 
 cat >>confdefs.h <<\_ACEOF
 #define HAVE_GROUPS_SEARCH 1
 _ACEOF
 
+
 		fi
-	else
-		{ $as_echo "$as_me:$LINENO: result: yes" >&5
-$as_echo "yes" >&6; }
+	fi
 
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_GROUPS_SEARCH 1
+
+	{ $as_echo "$as_me:$LINENO: checking whether __put_task_struct() is available" >&5
+$as_echo_n "checking whether __put_task_struct() is available... " >&6; }
+
+
+
+cat confdefs.h - <<_ACEOF >conftest.c
+/* confdefs.h.  */
 _ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
 
-	fi
 
+		#include <linux/sched.h>
+
+int
+main (void)
+{
 
+		__put_task_struct(NULL);
+
+  ;
+  return 0;
+}
+
+_ACEOF
+
+
+	rm -Rf build && mkdir -p build && touch build/conftest.mod.c
+	echo "obj-m := conftest.o" >build/Makefile
+	modpost_flag=''
+	test "x$enable_linux_builtin" = xyes && modpost_flag='modpost=true' # fake modpost stage
+	if { ac_try='cp conftest.c build && make modules -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build $modpost_flag'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  rc=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+ rc=1
+
+
+fi
+
+	rm -Rf build
+
+
+	if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+	else
+		if test "x$enable_linux_builtin" != xyes; then
 
-	{ $as_echo "$as_me:$LINENO: checking whether symbol __put_task_struct is exported" >&5
-$as_echo_n "checking whether symbol __put_task_struct is exported... " >&6; }
 	grep -q -E '[[:space:]]__put_task_struct[[:space:]]' \
 		$LINUX_OBJ/Module*.symvers 2>/dev/null
 	rc=$?
@@ -20484,25 +22910,28 @@ $as_echo_n "checking whether symbol __put_task_struct is exported... " >&6; }
 			grep -q -E "EXPORT_SYMBOL.*(__put_task_struct)" \
 				"$LINUX_OBJ/$file" 2>/dev/null
 			rc=$?
-		        if test $rc -eq 0; then
-		                export=1
-		                break;
-		        fi
+			if test $rc -eq 0; then
+				export=1
+				break;
+			fi
 		done
-		if test $export -eq 0; then
-			{ $as_echo "$as_me:$LINENO: result: no" >&5
-$as_echo "no" >&6; }
+		if test $export -eq 0; then :
+			rc=1
+		else :
+			rc=0
+		fi
+	else :
+		rc=0
+	fi
 
-		else
-			{ $as_echo "$as_me:$LINENO: result: yes" >&5
-$as_echo "yes" >&6; }
+		fi
+		if test $rc -ne 0; then :
 
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_PUT_TASK_STRUCT 1
-_ACEOF
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+		else :
 
-		fi
-	else
 		{ $as_echo "$as_me:$LINENO: result: yes" >&5
 $as_echo "yes" >&6; }
 
@@ -20510,6 +22939,8 @@ cat >>confdefs.h <<\_ACEOF
 #define HAVE_PUT_TASK_STRUCT 1
 _ACEOF
 
+
+		fi
 	fi
 
 
@@ -20580,9 +23011,69 @@ fi
 
 
 
+	{ $as_echo "$as_me:$LINENO: checking whether kvasprintf() is available" >&5
+$as_echo_n "checking whether kvasprintf() is available... " >&6; }
+
+
+
+cat confdefs.h - <<_ACEOF >conftest.c
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+
+		#include <linux/kernel.h>
+
+int
+main (void)
+{
+
+		kvasprintf(0, NULL, *((va_list*)NULL));
+
+  ;
+  return 0;
+}
+
+_ACEOF
+
+
+	rm -Rf build && mkdir -p build && touch build/conftest.mod.c
+	echo "obj-m := conftest.o" >build/Makefile
+	modpost_flag=''
+	test "x$enable_linux_builtin" = xyes && modpost_flag='modpost=true' # fake modpost stage
+	if { ac_try='cp conftest.c build && make modules -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build $modpost_flag'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  rc=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+ rc=1
+
+
+fi
+
+	rm -Rf build
+
+
+	if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+	else
+		if test "x$enable_linux_builtin" != xyes; then
 
-	{ $as_echo "$as_me:$LINENO: checking whether symbol kvasprintf is exported" >&5
-$as_echo_n "checking whether symbol kvasprintf is exported... " >&6; }
 	grep -q -E '[[:space:]]kvasprintf[[:space:]]' \
 		$LINUX_OBJ/Module*.symvers 2>/dev/null
 	rc=$?
@@ -20592,38 +23083,102 @@ $as_echo_n "checking whether symbol kvasprintf is exported... " >&6; }
 			grep -q -E "EXPORT_SYMBOL.*(kvasprintf)" \
 				"$LINUX_OBJ/$file" 2>/dev/null
 			rc=$?
-		        if test $rc -eq 0; then
-		                export=1
-		                break;
-		        fi
+			if test $rc -eq 0; then
+				export=1
+				break;
+			fi
 		done
-		if test $export -eq 0; then
-			{ $as_echo "$as_me:$LINENO: result: no" >&5
+		if test $export -eq 0; then :
+			rc=1
+		else :
+			rc=0
+		fi
+	else :
+		rc=0
+	fi
+
+		fi
+		if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
 $as_echo "no" >&6; }
 
-		else
-			{ $as_echo "$as_me:$LINENO: result: yes" >&5
+		else :
+
+		{ $as_echo "$as_me:$LINENO: result: yes" >&5
 $as_echo "yes" >&6; }
 
 cat >>confdefs.h <<\_ACEOF
 #define HAVE_KVASPRINTF 1
 _ACEOF
 
+
 		fi
-	else
-		{ $as_echo "$as_me:$LINENO: result: yes" >&5
-$as_echo "yes" >&6; }
+	fi
+
+
+	{ $as_echo "$as_me:$LINENO: checking whether rwsem_is_locked() acquires sem->wait_lock" >&5
+$as_echo_n "checking whether rwsem_is_locked() acquires sem->wait_lock... " >&6; }
+
+
+
+cat confdefs.h - <<_ACEOF >conftest.c
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+
+		#include <linux/rwsem.h>
+		int rwsem_is_locked(struct rw_semaphore *sem) { return 0; }
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
 
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_KVASPRINTF 1
 _ACEOF
 
-	fi
 
+	rm -Rf build && mkdir -p build && touch build/conftest.mod.c
+	echo "obj-m := conftest.o" >build/Makefile
+	modpost_flag=''
+	test "x$enable_linux_builtin" = xyes && modpost_flag='modpost=true' # fake modpost stage
+	if { ac_try='cp conftest.c build && make modules -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build $modpost_flag'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  rc=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+ rc=1
+
+
+fi
+
+	rm -Rf build
+
+
+	if test $rc -ne 0; then :
 
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+	else
+		if test "x$enable_linux_builtin" != xyes; then
 
-	{ $as_echo "$as_me:$LINENO: checking whether symbol rwsem_is_locked is exported" >&5
-$as_echo_n "checking whether symbol rwsem_is_locked is exported... " >&6; }
 	grep -q -E '[[:space:]]rwsem_is_locked[[:space:]]' \
 		$LINUX_OBJ/Module*.symvers 2>/dev/null
 	rc=$?
@@ -20633,38 +23188,104 @@ $as_echo_n "checking whether symbol rwsem_is_locked is exported... " >&6; }
 			grep -q -E "EXPORT_SYMBOL.*(rwsem_is_locked)" \
 				"$LINUX_OBJ/$file" 2>/dev/null
 			rc=$?
-		        if test $rc -eq 0; then
-		                export=1
-		                break;
-		        fi
+			if test $rc -eq 0; then
+				export=1
+				break;
+			fi
 		done
-		if test $export -eq 0; then
-			{ $as_echo "$as_me:$LINENO: result: no" >&5
+		if test $export -eq 0; then :
+			rc=1
+		else :
+			rc=0
+		fi
+	else :
+		rc=0
+	fi
+
+		fi
+		if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
 $as_echo "no" >&6; }
 
-		else
-			{ $as_echo "$as_me:$LINENO: result: yes" >&5
+		else :
+
+		{ $as_echo "$as_me:$LINENO: result: yes" >&5
 $as_echo "yes" >&6; }
 
 cat >>confdefs.h <<\_ACEOF
 #define RWSEM_IS_LOCKED_TAKES_WAIT_LOCK 1
 _ACEOF
 
+
 		fi
-	else
-		{ $as_echo "$as_me:$LINENO: result: yes" >&5
-$as_echo "yes" >&6; }
+	fi
 
-cat >>confdefs.h <<\_ACEOF
-#define RWSEM_IS_LOCKED_TAKES_WAIT_LOCK 1
+
+
+	{ $as_echo "$as_me:$LINENO: checking whether invalidate_inodes() is available" >&5
+$as_echo_n "checking whether invalidate_inodes() is available... " >&6; }
+
+
+
+cat confdefs.h - <<_ACEOF >conftest.c
+/* confdefs.h.  */
 _ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
 
-	fi
 
+		#include <linux/fs.h>
 
+int
+main (void)
+{
+
+		invalidate_inodes;
+
+  ;
+  return 0;
+}
+
+_ACEOF
+
+
+	rm -Rf build && mkdir -p build && touch build/conftest.mod.c
+	echo "obj-m := conftest.o" >build/Makefile
+	modpost_flag=''
+	test "x$enable_linux_builtin" = xyes && modpost_flag='modpost=true' # fake modpost stage
+	if { ac_try='cp conftest.c build && make modules -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build $modpost_flag'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  rc=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+ rc=1
+
+
+fi
+
+	rm -Rf build
+
+
+	if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+	else
+		if test "x$enable_linux_builtin" != xyes; then
 
-	{ $as_echo "$as_me:$LINENO: checking whether symbol invalidate_inodes is exported" >&5
-$as_echo_n "checking whether symbol invalidate_inodes is exported... " >&6; }
 	grep -q -E '[[:space:]]invalidate_inodes[[:space:]]' \
 		$LINUX_OBJ/Module*.symvers 2>/dev/null
 	rc=$?
@@ -20674,36 +23295,103 @@ $as_echo_n "checking whether symbol invalidate_inodes is exported... " >&6; }
 			grep -q -E "EXPORT_SYMBOL.*(invalidate_inodes)" \
 				"$LINUX_OBJ/$file" 2>/dev/null
 			rc=$?
-		        if test $rc -eq 0; then
-		                export=1
-		                break;
-		        fi
+			if test $rc -eq 0; then
+				export=1
+				break;
+			fi
 		done
-		if test $export -eq 0; then
-			{ $as_echo "$as_me:$LINENO: result: no" >&5
+		if test $export -eq 0; then :
+			rc=1
+		else :
+			rc=0
+		fi
+	else :
+		rc=0
+	fi
+
+		fi
+		if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
 $as_echo "no" >&6; }
 
-		else
-			{ $as_echo "$as_me:$LINENO: result: yes" >&5
+		else :
+
+		{ $as_echo "$as_me:$LINENO: result: yes" >&5
 $as_echo "yes" >&6; }
 
 cat >>confdefs.h <<\_ACEOF
 #define HAVE_INVALIDATE_INODES 1
 _ACEOF
 
+
 		fi
-	else
-		{ $as_echo "$as_me:$LINENO: result: yes" >&5
-$as_echo "yes" >&6; }
+	fi
 
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_INVALIDATE_INODES 1
+
+	{ $as_echo "$as_me:$LINENO: checking whether invalidate_inodes_check() is available" >&5
+$as_echo_n "checking whether invalidate_inodes_check() is available... " >&6; }
+
+
+
+cat confdefs.h - <<_ACEOF >conftest.c
+/* confdefs.h.  */
 _ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
 
-	fi
 
-	{ $as_echo "$as_me:$LINENO: checking whether symbol invalidate_inodes_check is exported" >&5
-$as_echo_n "checking whether symbol invalidate_inodes_check is exported... " >&6; }
+		#include <linux/fs.h>
+
+int
+main (void)
+{
+
+		invalidate_inodes_check(NULL, 0);
+
+  ;
+  return 0;
+}
+
+_ACEOF
+
+
+	rm -Rf build && mkdir -p build && touch build/conftest.mod.c
+	echo "obj-m := conftest.o" >build/Makefile
+	modpost_flag=''
+	test "x$enable_linux_builtin" = xyes && modpost_flag='modpost=true' # fake modpost stage
+	if { ac_try='cp conftest.c build && make modules -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build $modpost_flag'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  rc=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+ rc=1
+
+
+fi
+
+	rm -Rf build
+
+
+	if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+	else
+		if test "x$enable_linux_builtin" != xyes; then
+
 	grep -q -E '[[:space:]]invalidate_inodes_check[[:space:]]' \
 		$LINUX_OBJ/Module*.symvers 2>/dev/null
 	rc=$?
@@ -20713,25 +23401,28 @@ $as_echo_n "checking whether symbol invalidate_inodes_check is exported... " >&6
 			grep -q -E "EXPORT_SYMBOL.*(invalidate_inodes_check)" \
 				"$LINUX_OBJ/$file" 2>/dev/null
 			rc=$?
-		        if test $rc -eq 0; then
-		                export=1
-		                break;
-		        fi
+			if test $rc -eq 0; then
+				export=1
+				break;
+			fi
 		done
-		if test $export -eq 0; then
-			{ $as_echo "$as_me:$LINENO: result: no" >&5
-$as_echo "no" >&6; }
+		if test $export -eq 0; then :
+			rc=1
+		else :
+			rc=0
+		fi
+	else :
+		rc=0
+	fi
 
-		else
-			{ $as_echo "$as_me:$LINENO: result: yes" >&5
-$as_echo "yes" >&6; }
+		fi
+		if test $rc -ne 0; then :
 
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_INVALIDATE_INODES_CHECK 1
-_ACEOF
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+		else :
 
-		fi
-	else
 		{ $as_echo "$as_me:$LINENO: result: yes" >&5
 $as_echo "yes" >&6; }
 
@@ -20739,6 +23430,8 @@ cat >>confdefs.h <<\_ACEOF
 #define HAVE_INVALIDATE_INODES_CHECK 1
 _ACEOF
 
+
+		fi
 	fi
 
 
@@ -20808,9 +23501,69 @@ fi
 
 
 
+	{ $as_echo "$as_me:$LINENO: checking whether shrink_dcache_memory() is available" >&5
+$as_echo_n "checking whether shrink_dcache_memory() is available... " >&6; }
+
+
+
+cat confdefs.h - <<_ACEOF >conftest.c
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+
+		#include <linux/dcache.h>
+
+int
+main (void)
+{
+
+		shrink_dcache_memory(0, 0);
+
+  ;
+  return 0;
+}
+
+_ACEOF
+
+
+	rm -Rf build && mkdir -p build && touch build/conftest.mod.c
+	echo "obj-m := conftest.o" >build/Makefile
+	modpost_flag=''
+	test "x$enable_linux_builtin" = xyes && modpost_flag='modpost=true' # fake modpost stage
+	if { ac_try='cp conftest.c build && make modules -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build $modpost_flag'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  rc=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+ rc=1
+
+
+fi
+
+	rm -Rf build
+
+
+	if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+	else
+		if test "x$enable_linux_builtin" != xyes; then
 
-	{ $as_echo "$as_me:$LINENO: checking whether symbol shrink_dcache_memory is exported" >&5
-$as_echo_n "checking whether symbol shrink_dcache_memory is exported... " >&6; }
 	grep -q -E '[[:space:]]shrink_dcache_memory[[:space:]]' \
 		$LINUX_OBJ/Module*.symvers 2>/dev/null
 	rc=$?
@@ -20820,38 +23573,103 @@ $as_echo_n "checking whether symbol shrink_dcache_memory is exported... " >&6; }
 			grep -q -E "EXPORT_SYMBOL.*(shrink_dcache_memory)" \
 				"$LINUX_OBJ/$file" 2>/dev/null
 			rc=$?
-		        if test $rc -eq 0; then
-		                export=1
-		                break;
-		        fi
+			if test $rc -eq 0; then
+				export=1
+				break;
+			fi
 		done
-		if test $export -eq 0; then
-			{ $as_echo "$as_me:$LINENO: result: no" >&5
+		if test $export -eq 0; then :
+			rc=1
+		else :
+			rc=0
+		fi
+	else :
+		rc=0
+	fi
+
+		fi
+		if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
 $as_echo "no" >&6; }
 
-		else
-			{ $as_echo "$as_me:$LINENO: result: yes" >&5
+		else :
+
+		{ $as_echo "$as_me:$LINENO: result: yes" >&5
 $as_echo "yes" >&6; }
 
 cat >>confdefs.h <<\_ACEOF
 #define HAVE_SHRINK_DCACHE_MEMORY 1
 _ACEOF
 
+
 		fi
-	else
-		{ $as_echo "$as_me:$LINENO: result: yes" >&5
-$as_echo "yes" >&6; }
+	fi
 
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_SHRINK_DCACHE_MEMORY 1
+
+	{ $as_echo "$as_me:$LINENO: checking whether shrink_icache_memory() is available" >&5
+$as_echo_n "checking whether shrink_icache_memory() is available... " >&6; }
+
+
+
+cat confdefs.h - <<_ACEOF >conftest.c
+/* confdefs.h.  */
 _ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
 
-	fi
+
+		#include <linux/dcache.h>
+
+int
+main (void)
+{
+
+		shrink_icache_memory(0, 0);
+
+  ;
+  return 0;
+}
+
+_ACEOF
+
+
+	rm -Rf build && mkdir -p build && touch build/conftest.mod.c
+	echo "obj-m := conftest.o" >build/Makefile
+	modpost_flag=''
+	test "x$enable_linux_builtin" = xyes && modpost_flag='modpost=true' # fake modpost stage
+	if { ac_try='cp conftest.c build && make modules -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build $modpost_flag'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  rc=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+ rc=1
+
+
+fi
+
+	rm -Rf build
 
 
+	if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+	else
+		if test "x$enable_linux_builtin" != xyes; then
 
-	{ $as_echo "$as_me:$LINENO: checking whether symbol shrink_icache_memory is exported" >&5
-$as_echo_n "checking whether symbol shrink_icache_memory is exported... " >&6; }
 	grep -q -E '[[:space:]]shrink_icache_memory[[:space:]]' \
 		$LINUX_OBJ/Module*.symvers 2>/dev/null
 	rc=$?
@@ -20861,25 +23679,28 @@ $as_echo_n "checking whether symbol shrink_icache_memory is exported... " >&6; }
 			grep -q -E "EXPORT_SYMBOL.*(shrink_icache_memory)" \
 				"$LINUX_OBJ/$file" 2>/dev/null
 			rc=$?
-		        if test $rc -eq 0; then
-		                export=1
-		                break;
-		        fi
+			if test $rc -eq 0; then
+				export=1
+				break;
+			fi
 		done
-		if test $export -eq 0; then
-			{ $as_echo "$as_me:$LINENO: result: no" >&5
-$as_echo "no" >&6; }
+		if test $export -eq 0; then :
+			rc=1
+		else :
+			rc=0
+		fi
+	else :
+		rc=0
+	fi
 
-		else
-			{ $as_echo "$as_me:$LINENO: result: yes" >&5
-$as_echo "yes" >&6; }
+		fi
+		if test $rc -ne 0; then :
 
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_SHRINK_ICACHE_MEMORY 1
-_ACEOF
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+		else :
 
-		fi
-	else
 		{ $as_echo "$as_me:$LINENO: result: yes" >&5
 $as_echo "yes" >&6; }
 
@@ -20887,6 +23708,8 @@ cat >>confdefs.h <<\_ACEOF
 #define HAVE_SHRINK_ICACHE_MEMORY 1
 _ACEOF
 
+
+		fi
 	fi
 
 
@@ -20898,10 +23721,10 @@ $as_echo_n "checking whether symbol kern_path_parent exists in header... " >&6;
 	for file in include/linux/namei.h; do
 		grep -q "int kern_path_parent(const char \*, struct nameidata \*)" "$LINUX/$file" 2>/dev/null
 		rc=$?
-	        if test $rc -eq 0; then
-	                header=1
-	                break;
-	        fi
+		if test $rc -eq 0; then
+			header=1
+			break;
+		fi
 	done
 	if test $header -eq 0; then
 		{ $as_echo "$as_me:$LINENO: result: no" >&5
@@ -20918,9 +23741,69 @@ _ACEOF
 	fi
 
 
+	{ $as_echo "$as_me:$LINENO: checking whether kern_path_parent() is available" >&5
+$as_echo_n "checking whether kern_path_parent() is available... " >&6; }
+
+
+
+cat confdefs.h - <<_ACEOF >conftest.c
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+
+		#include <linux/namei.h>
+
+int
+main (void)
+{
+
+		kern_path_parent(NULL, NULL);
+
+  ;
+  return 0;
+}
+
+_ACEOF
+
+
+	rm -Rf build && mkdir -p build && touch build/conftest.mod.c
+	echo "obj-m := conftest.o" >build/Makefile
+	modpost_flag=''
+	test "x$enable_linux_builtin" = xyes && modpost_flag='modpost=true' # fake modpost stage
+	if { ac_try='cp conftest.c build && make modules -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build $modpost_flag'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  rc=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+ rc=1
+
+
+fi
+
+	rm -Rf build
+
+
+	if test $rc -ne 0; then :
+
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+	else
+		if test "x$enable_linux_builtin" != xyes; then
 
-	{ $as_echo "$as_me:$LINENO: checking whether symbol kern_path_parent is exported" >&5
-$as_echo_n "checking whether symbol kern_path_parent is exported... " >&6; }
 	grep -q -E '[[:space:]]kern_path_parent[[:space:]]' \
 		$LINUX_OBJ/Module*.symvers 2>/dev/null
 	rc=$?
@@ -20930,25 +23813,28 @@ $as_echo_n "checking whether symbol kern_path_parent is exported... " >&6; }
 			grep -q -E "EXPORT_SYMBOL.*(kern_path_parent)" \
 				"$LINUX_OBJ/$file" 2>/dev/null
 			rc=$?
-		        if test $rc -eq 0; then
-		                export=1
-		                break;
-		        fi
+			if test $rc -eq 0; then
+				export=1
+				break;
+			fi
 		done
-		if test $export -eq 0; then
-			{ $as_echo "$as_me:$LINENO: result: no" >&5
-$as_echo "no" >&6; }
+		if test $export -eq 0; then :
+			rc=1
+		else :
+			rc=0
+		fi
+	else :
+		rc=0
+	fi
 
-		else
-			{ $as_echo "$as_me:$LINENO: result: yes" >&5
-$as_echo "yes" >&6; }
+		fi
+		if test $rc -ne 0; then :
 
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_KERN_PATH_PARENT_SYMBOL 1
-_ACEOF
+		{ $as_echo "$as_me:$LINENO: result: no" >&5
+$as_echo "no" >&6; }
+
+		else :
 
-		fi
-	else
 		{ $as_echo "$as_me:$LINENO: result: yes" >&5
 $as_echo "yes" >&6; }
 
@@ -20956,6 +23842,8 @@ cat >>confdefs.h <<\_ACEOF
 #define HAVE_KERN_PATH_PARENT_SYMBOL 1
 _ACEOF
 
+
+		fi
 	fi
 
 
diff --git a/spl_config.h.in b/spl_config.h.in
index 1b4a129b2..4ee1b3353 100644
--- a/spl_config.h.in
+++ b/spl_config.h.in
@@ -210,7 +210,7 @@
 /* Define to 1 if you have the <sys/types.h> header file. */
 #undef HAVE_SYS_TYPES_H
 
-/* task_curr() exported */
+/* task_curr() is available */
 #undef HAVE_TASK_CURR
 
 /* timespec_sub() is available */