Linux 6.5 compat: register_sysctl_table removed

Additionally, the .child element of ctl_table has been removed in 6.5.
This change adds a new test for the pre-6.5 register_sysctl_table()
function, and uses the old code in that case. If it isn't found, then
the parentage entries in the tables are removed, and the register_sysctl
call is provided the paths of "kernel/spl", "kernel/spl/kmem", and
"kernel/spl/kstat" directly, to populate each subdirectory over three
calls, as is the new API.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Coleman Kane <ckane@colemankane.org>
Closes #15098
This commit is contained in:
Coleman Kane
2023-08-01 11:27:58 -04:00
committed by Brian Behlendorf
parent e96fbdba34
commit 6c2fc56916
3 changed files with 52 additions and 3 deletions
+27
View File
@@ -0,0 +1,27 @@
dnl #
dnl # Linux 6.5 removes register_sysctl_table
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_REGISTER_SYSCTL_TABLE], [
ZFS_LINUX_TEST_SRC([has_register_sysctl_table], [
#include <linux/sysctl.h>
static struct ctl_table dummy_table[] = {
{}
};
],[
struct ctl_table_header *h
__attribute((unused)) = register_sysctl_table(dummy_table);
])
])
AC_DEFUN([ZFS_AC_KERNEL_REGISTER_SYSCTL_TABLE], [
AC_MSG_CHECKING([whether register_sysctl_table exists])
ZFS_LINUX_TEST_RESULT([has_register_sysctl_table], [
AC_MSG_RESULT([yes])
AC_DEFINE(HAVE_SYSCTL_REGISTER_TABLE, 1,
[sysctl_register_table exists])
],[
AC_MSG_RESULT([no])
])
])
+2
View File
@@ -160,6 +160,7 @@ AC_DEFUN([ZFS_AC_KERNEL_TEST_SRC], [
ZFS_AC_KERNEL_SRC_FILEMAP
ZFS_AC_KERNEL_SRC_WRITEPAGE_T
ZFS_AC_KERNEL_SRC_RECLAIMED
ZFS_AC_KERNEL_SRC_REGISTER_SYSCTL_TABLE
case "$host_cpu" in
powerpc*)
ZFS_AC_KERNEL_SRC_CPU_HAS_FEATURE
@@ -299,6 +300,7 @@ AC_DEFUN([ZFS_AC_KERNEL_TEST_RESULT], [
ZFS_AC_KERNEL_FILEMAP
ZFS_AC_KERNEL_WRITEPAGE_T
ZFS_AC_KERNEL_RECLAIMED
ZFS_AC_KERNEL_REGISTER_SYSCTL_TABLE
case "$host_cpu" in
powerpc*)
ZFS_AC_KERNEL_CPU_HAS_FEATURE