SPL_AC_TYPE_ATOMIC64_XCHG
SPL_AC_TYPE_UINTPTR_T
SPL_AC_2ARGS_REGISTER_SYSCTL
- SPL_AC_SET_SHRINKER
- SPL_AC_3ARGS_SHRINKER_CALLBACK
+ SPL_AC_SHRINKER_CALLBACK
SPL_AC_PATH_IN_NAMEIDATA
SPL_AC_TASK_CURR
SPL_AC_CTL_UNNUMBERED
SPL_AC_RWSEM_SPINLOCK_IS_RAW
SPL_AC_SCHED_RT_HEADER
SPL_AC_2ARGS_VFS_GETATTR
+ SPL_AC_USLEEP_RANGE
+ SPL_AC_KMEM_CACHE_ALLOCFLAGS
])
AC_DEFUN([SPL_AC_MODULE_SYMVERS], [
])
])
-dnl #
-dnl # 2.6.23 API change
-dnl # Old set_shrinker API replaced with register_shrinker
-dnl #
-AC_DEFUN([SPL_AC_SET_SHRINKER], [
- AC_MSG_CHECKING([whether set_shrinker() available])
- SPL_LINUX_TRY_COMPILE([
- #include <linux/mm.h>
- ],[
- return set_shrinker(DEFAULT_SEEKS, NULL);
- ],[
- AC_MSG_RESULT([yes])
- AC_DEFINE(HAVE_SET_SHRINKER, 1,
- [set_shrinker() available])
- ],[
- AC_MSG_RESULT([no])
- ])
-])
-
-dnl #
-dnl # 2.6.35 API change,
-dnl # Add context to shrinker callback
-dnl #
-AC_DEFUN([SPL_AC_3ARGS_SHRINKER_CALLBACK],
- [AC_MSG_CHECKING([whether shrinker callback wants 3 args])
+AC_DEFUN([SPL_AC_SHRINKER_CALLBACK],[
tmp_flags="$EXTRA_KCFLAGS"
EXTRA_KCFLAGS="-Werror"
+ dnl #
+ dnl # 2.6.23 to 2.6.34 API change
+ dnl # ->shrink(int nr_to_scan, gfp_t gfp_mask)
+ dnl #
+ AC_MSG_CHECKING([whether old 2-argument shrinker exists])
SPL_LINUX_TRY_COMPILE([
#include <linux/mm.h>
- int shrinker_cb(struct shrinker *, int, unsigned int);
+ int shrinker_cb(int nr_to_scan, gfp_t gfp_mask);
],[
struct shrinker cache_shrinker = {
.shrink = shrinker_cb,
register_shrinker(&cache_shrinker);
],[
AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_3ARGS_SHRINKER_CALLBACK, 1,
- [shrinker callback wants 3 args])
+ AC_DEFINE(HAVE_2ARGS_OLD_SHRINKER_CALLBACK, 1,
+ [old shrinker callback wants 2 args])
],[
AC_MSG_RESULT(no)
+ dnl #
+ dnl # 2.6.35 - 2.6.39 API change
+ dnl # ->shrink(struct shrinker *,
+ dnl # int nr_to_scan, gfp_t gfp_mask)
+ dnl #
+ AC_MSG_CHECKING([whether old 3-argument shrinker exists])
+ SPL_LINUX_TRY_COMPILE([
+ #include <linux/mm.h>
+
+ int shrinker_cb(struct shrinker *, int nr_to_scan,
+ gfp_t gfp_mask);
+ ],[
+ struct shrinker cache_shrinker = {
+ .shrink = shrinker_cb,
+ .seeks = DEFAULT_SEEKS,
+ };
+ register_shrinker(&cache_shrinker);
+ ],[
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_3ARGS_SHRINKER_CALLBACK, 1,
+ [old shrinker callback wants 3 args])
+ ],[
+ AC_MSG_RESULT(no)
+ dnl #
+ dnl # 3.0 - 3.11 API change
+ dnl # ->shrink(struct shrinker *,
+ dnl # struct shrink_control *sc)
+ dnl #
+ AC_MSG_CHECKING(
+ [whether new 2-argument shrinker exists])
+ SPL_LINUX_TRY_COMPILE([
+ #include <linux/mm.h>
+
+ int shrinker_cb(struct shrinker *,
+ struct shrink_control *sc);
+ ],[
+ struct shrinker cache_shrinker = {
+ .shrink = shrinker_cb,
+ .seeks = DEFAULT_SEEKS,
+ };
+ register_shrinker(&cache_shrinker);
+ ],[
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_2ARGS_NEW_SHRINKER_CALLBACK, 1,
+ [new shrinker callback wants 2 args])
+ ],[
+ AC_MSG_RESULT(no)
+ dnl #
+ dnl # 3.12 API change,
+ dnl # ->shrink() is logically split in to
+ dnl # ->count_objects() and ->scan_objects()
+ dnl #
+ AC_MSG_CHECKING(
+ [whether ->count_objects callback exists])
+ SPL_LINUX_TRY_COMPILE([
+ #include <linux/mm.h>
+
+ unsigned long shrinker_cb(
+ struct shrinker *,
+ struct shrink_control *sc);
+ ],[
+ struct shrinker cache_shrinker = {
+ .count_objects = shrinker_cb,
+ .scan_objects = shrinker_cb,
+ .seeks = DEFAULT_SEEKS,
+ };
+ register_shrinker(&cache_shrinker);
+ ],[
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_SPLIT_SHRINKER_CALLBACK,
+ 1, [->count_objects exists])
+ ],[
+ AC_MSG_ERROR(error)
+ ])
+ ])
+ ])
])
EXTRA_KCFLAGS="$tmp_flags"
])
EXTRA_KCFLAGS="$tmp_flags"
])
-dnl #
-dnl # SLES API change, never adopted in mainline,
-dnl # Third 'struct vfsmount *' argument removed.
-dnl #
AC_DEFUN([SPL_AC_2ARGS_VFS_UNLINK],
[AC_MSG_CHECKING([whether vfs_unlink() wants 2 args])
SPL_LINUX_TRY_COMPILE([
#include <linux/fs.h>
],[
- vfs_unlink(NULL, NULL);
+ vfs_unlink((struct inode *) NULL, (struct dentry *) NULL);
],[
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_2ARGS_VFS_UNLINK, 1,
[vfs_unlink() wants 2 args])
],[
AC_MSG_RESULT(no)
+ dnl #
+ dnl # Linux 3.13 API change
+ dnl # Added delegated inode
+ dnl #
+ AC_MSG_CHECKING([whether vfs_unlink() wants 3 args])
+ SPL_LINUX_TRY_COMPILE([
+ #include <linux/fs.h>
+ ],[
+ vfs_unlink((struct inode *) NULL,
+ (struct dentry *) NULL,
+ (struct inode **) NULL);
+ ],[
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_3ARGS_VFS_UNLINK, 1,
+ [vfs_unlink() wants 3 args])
+ ],[
+ AC_MSG_ERROR(no)
+ ])
+
])
])
-dnl #
-dnl # SLES API change, never adopted in mainline,
-dnl # Third and sixth 'struct vfsmount *' argument removed.
-dnl #
AC_DEFUN([SPL_AC_4ARGS_VFS_RENAME],
[AC_MSG_CHECKING([whether vfs_rename() wants 4 args])
SPL_LINUX_TRY_COMPILE([
#include <linux/fs.h>
],[
- vfs_rename(NULL, NULL, NULL, NULL);
+ vfs_rename((struct inode *) NULL, (struct dentry *) NULL,
+ (struct inode *) NULL, (struct dentry *) NULL);
],[
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_4ARGS_VFS_RENAME, 1,
[vfs_rename() wants 4 args])
],[
AC_MSG_RESULT(no)
+ dnl #
+ dnl # Linux 3.13 API change
+ dnl # Added delegated inode
+ dnl #
+ AC_MSG_CHECKING([whether vfs_rename() wants 5 args])
+ SPL_LINUX_TRY_COMPILE([
+ #include <linux/fs.h>
+ ],[
+ vfs_rename((struct inode *) NULL,
+ (struct dentry *) NULL,
+ (struct inode *) NULL,
+ (struct dentry *) NULL,
+ (struct inode **) NULL);
+ ],[
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_5ARGS_VFS_RENAME, 1,
+ [vfs_rename() wants 5 args])
+ ],[
+ AC_MSG_RESULT(no)
+ dnl #
+ dnl # Linux 3.15 API change
+ dnl # Added flags
+ dnl #
+ AC_MSG_CHECKING([whether vfs_rename() wants 6 args])
+ SPL_LINUX_TRY_COMPILE([
+ #include <linux/fs.h>
+ ],[
+ vfs_rename((struct inode *) NULL,
+ (struct dentry *) NULL,
+ (struct inode *) NULL,
+ (struct dentry *) NULL,
+ (struct inode **) NULL,
+ (unsigned int) 0);
+ ],[
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_6ARGS_VFS_RENAME, 1,
+ [vfs_rename() wants 6 args])
+ ],[
+ AC_MSG_ERROR(no)
+ ])
+ ])
])
])
])
])
])
+
+dnl #
+dnl # 2.6.36 API compatibility.
+dnl # Added usleep_range timer.
+dnl # usleep_range is a finer precision implementation of msleep
+dnl # designed to be a drop-in replacement for udelay where a precise
+dnl # sleep / busy-wait is unnecessary.
+dnl #
+AC_DEFUN([SPL_AC_USLEEP_RANGE], [
+ AC_MSG_CHECKING([whether usleep_range() is available])
+ SPL_LINUX_TRY_COMPILE([
+ #include <linux/delay.h>
+ ],[
+ usleep_range(0, 0);
+ ],[
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_USLEEP_RANGE, 1,
+ [usleep_range is available])
+ ],[
+ AC_MSG_RESULT(no)
+ ])
+])
+
+dnl #
+dnl # 2.6.35 API change,
+dnl # The cachep->gfpflags member was renamed cachep->allocflags. These are
+dnl # private allocation flags which are applied when allocating a new slab
+dnl # in kmem_getpages(). Unfortunately there is no public API for setting
+dnl # non-default flags.
+dnl #
+AC_DEFUN([SPL_AC_KMEM_CACHE_ALLOCFLAGS], [
+ AC_MSG_CHECKING([whether struct kmem_cache has allocflags])
+ SPL_LINUX_TRY_COMPILE([
+ #include <linux/slab.h>
+ ],[
+ struct kmem_cache cachep __attribute__ ((unused));
+ cachep.allocflags = GFP_KERNEL;
+ ],[
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_KMEM_CACHE_ALLOCFLAGS, 1,
+ [struct kmem_cache has allocflags])
+ ],[
+ AC_MSG_RESULT(no)
+
+ AC_MSG_CHECKING([whether struct kmem_cache has gfpflags])
+ SPL_LINUX_TRY_COMPILE([
+ #include <linux/slab.h>
+ ],[
+ struct kmem_cache cachep __attribute__ ((unused));
+ cachep.gfpflags = GFP_KERNEL;
+ ],[
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_KMEM_CACHE_GFPFLAGS, 1,
+ [struct kmem_cache has gfpflags])
+ ],[
+ AC_MSG_RESULT(no)
+ ])
+ ])
+])
projects / mirror_spl-debian.git / blobdiff