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config: remove HAVE_SPLIT_SHRINKER_CALLBACK and HAVE_SINGLE_SHRINKER_CALLBACK

Browse Source 
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de>
Signed-off-by: Rob Norris <robn@despairlabs.com>
Closes #16479
This commit is contained in:
Rob Norris
2024-08-04 10:11:03 +10:00
committed by Tony Hutter
parent 02daa09846
commit 5f73630e9c
3 changed files with 24 additions and 211 deletions
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config/kernel-shrink.m4
+18 -92
View File
@@ -83,6 +83,11 @@ AC_DEFUN([ZFS_AC_KERNEL_SHRINK_CONTROL_HAS_NID], [
])
])
dnl #
dnl # 6.0 API change
dnl # register_shrinker() becomes a var-arg function that takes
dnl # a printf-style format string as args > 0
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_REGISTER_SHRINKER_VARARG], [
ZFS_LINUX_TEST_SRC([register_shrinker_vararg], [
#include <linux/mm.h>
@@ -98,30 +103,14 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_REGISTER_SHRINKER_VARARG], [
])
])
AC_DEFUN([ZFS_AC_KERNEL_SRC_SHRINKER_CALLBACK], [
ZFS_LINUX_TEST_SRC([shrinker_cb_shrink_control], [
#include <linux/mm.h>
static int shrinker_cb(struct shrinker *shrink,
struct shrink_control *sc) { return 0; }
AC_DEFUN([ZFS_AC_KERNEL_REGISTER_SHRINKER_VARARG],[
AC_MSG_CHECKING([whether new var-arg register_shrinker() exists])
ZFS_LINUX_TEST_RESULT([register_shrinker_vararg], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_REGISTER_SHRINKER_VARARG, 1,
[register_shrinker is vararg])
],[
struct shrinker cache_shrinker = {
.shrink = shrinker_cb,
.seeks = DEFAULT_SEEKS,
};
register_shrinker(&cache_shrinker);
])
ZFS_LINUX_TEST_SRC([shrinker_cb_shrink_control_split], [
#include <linux/mm.h>
static unsigned long shrinker_cb(struct shrinker *shrink,
struct shrink_control *sc) { return 0; }
],[
struct shrinker cache_shrinker = {
.count_objects = shrinker_cb,
.scan_objects = shrinker_cb,
.seeks = DEFAULT_SEEKS,
};
register_shrinker(&cache_shrinker);
AC_MSG_RESULT(no)
])
])
@@ -144,75 +133,12 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_SHRINKER_REGISTER], [
])
])
AC_DEFUN([ZFS_AC_KERNEL_SHRINKER_CALLBACK],[
dnl #
dnl # 6.0 API change
dnl # register_shrinker() becomes a var-arg function that takes
dnl # a printf-style format string as args > 0
dnl #
AC_MSG_CHECKING([whether new var-arg register_shrinker() exists])
ZFS_LINUX_TEST_RESULT([register_shrinker_vararg], [
AC_DEFUN([ZFS_AC_KERNEL_SHRINKER_REGISTER], [
ZFS_LINUX_TEST_RESULT([shrinker_register], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_REGISTER_SHRINKER_VARARG, 1,
[register_shrinker is vararg])
dnl # We assume that the split shrinker callback exists if the
dnl # vararg register_shrinker() exists, because the latter is
dnl # a much more recent addition, and the macro test for the
dnl # var-arg version only works if the callback is split
AC_DEFINE(HAVE_SPLIT_SHRINKER_CALLBACK, 1,
[cs->count_objects exists])
],[
AC_DEFINE(HAVE_SHRINKER_REGISTER, 1, [shrinker_register exists])
], [
AC_MSG_RESULT(no)
dnl #
dnl # 3.0 - 3.11 API change
dnl # cs->shrink(struct shrinker *, struct shrink_control *sc)
dnl #
AC_MSG_CHECKING([whether new 2-argument shrinker exists])
ZFS_LINUX_TEST_RESULT([shrinker_cb_shrink_control], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_SINGLE_SHRINKER_CALLBACK, 1,
[new shrinker callback wants 2 args])
],[
AC_MSG_RESULT(no)
dnl #
dnl # 3.12 API change,
dnl # cs->shrink() is logically split in to
dnl # cs->count_objects() and cs->scan_objects()
dnl #
AC_MSG_CHECKING(
[whether cs->count_objects callback exists])
ZFS_LINUX_TEST_RESULT(
[shrinker_cb_shrink_control_split],[
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_SPLIT_SHRINKER_CALLBACK, 1,
[cs->count_objects exists])
],[
AC_MSG_RESULT(no)
AC_MSG_CHECKING(
[whether shrinker_register exists])
ZFS_LINUX_TEST_RESULT([shrinker_register], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_SHRINKER_REGISTER, 1,
[shrinker_register exists])
dnl # We assume that the split shrinker
dnl # callback exists if
dnl # shrinker_register() exists,
dnl # because the latter is a much more
dnl # recent addition, and the macro
dnl # test for shrinker_register() only
dnl # works if the callback is split
AC_DEFINE(HAVE_SPLIT_SHRINKER_CALLBACK,
1, [cs->count_objects exists])
],[
AC_MSG_RESULT(no)
ZFS_LINUX_TEST_ERROR([shrinker])
])
])
])
])
])
@@ -220,7 +146,6 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_SHRINKER], [
ZFS_AC_KERNEL_SRC_SUPER_BLOCK_S_SHRINK
ZFS_AC_KERNEL_SRC_SUPER_BLOCK_S_SHRINK_PTR
ZFS_AC_KERNEL_SRC_SHRINK_CONTROL_HAS_NID
ZFS_AC_KERNEL_SRC_SHRINKER_CALLBACK
ZFS_AC_KERNEL_SRC_REGISTER_SHRINKER_VARARG
ZFS_AC_KERNEL_SRC_SHRINKER_REGISTER
])
@@ -228,5 +153,6 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_SHRINKER], [
AC_DEFUN([ZFS_AC_KERNEL_SHRINKER], [
ZFS_AC_KERNEL_SUPER_BLOCK_S_SHRINK
ZFS_AC_KERNEL_SHRINK_CONTROL_HAS_NID
ZFS_AC_KERNEL_SHRINKER_CALLBACK
ZFS_AC_KERNEL_REGISTER_SHRINKER_VARARG
ZFS_AC_KERNEL_SHRINKER_REGISTER
])