AC_SUBST(KERNELCPPFLAGS)
SPL_AC_DEBUG
- SPL_AC_DEBUG_LOG
SPL_AC_DEBUG_KMEM
SPL_AC_DEBUG_KMEM_TRACKING
SPL_AC_TEST_MODULE
SPL_AC_ATOMIC_SPINLOCK
- SPL_AC_TYPE_ATOMIC64_CMPXCHG
- 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_PATH_IN_NAMEIDATA
- SPL_AC_TASK_CURR
- SPL_AC_CTL_UNNUMBERED
+ SPL_AC_SHRINKER_CALLBACK
SPL_AC_CTL_NAME
- SPL_AC_FLS64
- SPL_AC_DEVICE_CREATE
- SPL_AC_5ARGS_DEVICE_CREATE
- SPL_AC_CLASS_DEVICE_CREATE
- SPL_AC_SET_NORMALIZED_TIMESPEC_EXPORT
- SPL_AC_SET_NORMALIZED_TIMESPEC_INLINE
- SPL_AC_TIMESPEC_SUB
- SPL_AC_INIT_UTSNAME
- SPL_AC_UACCESS_HEADER
- SPL_AC_KMALLOC_NODE
- SPL_AC_MONOTONIC_CLOCK
- SPL_AC_INODE_I_MUTEX
- SPL_AC_MUTEX_OWNER
- SPL_AC_MUTEX_OWNER_TASK_STRUCT
- SPL_AC_MUTEX_LOCK_NESTED
- SPL_AC_3ARGS_ON_EACH_CPU
- SPL_AC_KALLSYMS_LOOKUP_NAME
- SPL_AC_GET_VMALLOC_INFO
- SPL_AC_PGDAT_HELPERS
- SPL_AC_FIRST_ONLINE_PGDAT
- SPL_AC_NEXT_ONLINE_PGDAT
- SPL_AC_NEXT_ZONE
- SPL_AC_PGDAT_LIST
- SPL_AC_GLOBAL_PAGE_STATE
- SPL_AC_ZONE_STAT_ITEM_FREE
- SPL_AC_ZONE_STAT_ITEM_INACTIVE
- SPL_AC_ZONE_STAT_ITEM_ACTIVE
- SPL_AC_GET_ZONE_COUNTS
- SPL_AC_USER_PATH_DIR
- SPL_AC_SET_FS_PWD
- SPL_AC_2ARGS_SET_FS_PWD
+ SPL_AC_CONFIG_TRIM_UNUSED_KSYMS
+ SPL_AC_PDE_DATA
+ SPL_AC_SET_FS_PWD_WITH_CONST
SPL_AC_2ARGS_VFS_UNLINK
SPL_AC_4ARGS_VFS_RENAME
- SPL_AC_VFS_FSYNC
SPL_AC_2ARGS_VFS_FSYNC
SPL_AC_INODE_TRUNCATE_RANGE
SPL_AC_FS_STRUCT_SPINLOCK
- SPL_AC_CRED_STRUCT
- SPL_AC_GROUPS_SEARCH
+ SPL_AC_KUIDGID_T
SPL_AC_PUT_TASK_STRUCT
- SPL_AC_5ARGS_PROC_HANDLER
- SPL_AC_KVASPRINTF
- SPL_AC_EXPORTED_RWSEM_IS_LOCKED
SPL_AC_KERNEL_FALLOCATE
- SPL_AC_SHRINK_DCACHE_MEMORY
- SPL_AC_SHRINK_ICACHE_MEMORY
- SPL_AC_KERN_PATH_PARENT_HEADER
- SPL_AC_KERN_PATH_PARENT_SYMBOL
- SPL_AC_KERN_PATH_LOCKED
- SPL_AC_CONFIG_KALLSYMS
SPL_AC_CONFIG_ZLIB_INFLATE
SPL_AC_CONFIG_ZLIB_DEFLATE
SPL_AC_2ARGS_ZLIB_DEFLATE_WORKSPACESIZE
SPL_AC_SHRINK_CONTROL_STRUCT
SPL_AC_RWSEM_SPINLOCK_IS_RAW
+ SPL_AC_RWSEM_ACTIVITY
+ SPL_AC_RWSEM_ATOMIC_LONG_COUNT
+ SPL_AC_SCHED_RT_HEADER
+ SPL_AC_2ARGS_VFS_GETATTR
+ SPL_AC_USLEEP_RANGE
+ SPL_AC_KMEM_CACHE_ALLOCFLAGS
+ SPL_AC_WAIT_ON_BIT
+ SPL_AC_MUTEX_OWNER
+ SPL_AC_INODE_LOCK
])
AC_DEFUN([SPL_AC_MODULE_SYMVERS], [
if ! test -f "$LINUX_OBJ/$LINUX_SYMBOLS"; then
AC_MSG_ERROR([
*** Please make sure the kernel devel package for your distribution
- *** is installed. If your building with a custom kernel make sure the
+ *** is installed. If you are building with a custom kernel, make sure the
*** kernel is configured, built, and the '--with-linux=PATH' configure
*** option refers to the location of the kernel source.])
fi
if test ! -d "$kernelsrc"; then
AC_MSG_ERROR([
*** Please make sure the kernel devel package for your distribution
- *** is installed then try again. If that fails you can specify the
+ *** is installed and then try again. If that fails, you can specify the
*** location of the kernel source with the '--with-linux=PATH' option.])
fi
dnl #
dnl # Check for rpm+rpmbuild to build RPM packages. If these tools
-dnl # are missing it is non-fatal but you will not be able to build
+dnl # are missing, it is non-fatal, but you will not be able to build
dnl # RPM packages and will be warned if you try too.
dnl #
+dnl # By default, the generic spec file will be used because it requires
+dnl # minimal dependencies. Distribution specific spec files can be
+dnl # placed under the 'rpm/<distribution>' directory and enabled using
+dnl # the --with-spec=<distribution> configure option.
+dnl #
AC_DEFUN([SPL_AC_RPM], [
RPM=rpm
RPMBUILD=rpmbuild
AC_MSG_RESULT([$HAVE_RPMBUILD])
])
+ RPM_DEFINE_COMMON='--define "$(DEBUG_SPL) 1" --define "$(DEBUG_KMEM) 1" --define "$(DEBUG_KMEM_TRACKING) 1"'
+ RPM_DEFINE_UTIL=
+ RPM_DEFINE_KMOD='--define "kernels $(LINUX_VERSION)"'
+ RPM_DEFINE_DKMS=
+
+ SRPM_DEFINE_COMMON='--define "build_src_rpm 1"'
+ SRPM_DEFINE_UTIL=
+ SRPM_DEFINE_KMOD=
+ SRPM_DEFINE_DKMS=
+
+ RPM_SPEC_DIR="rpm/generic"
+ AC_ARG_WITH([spec],
+ AS_HELP_STRING([--with-spec=SPEC],
+ [Spec files 'generic|redhat']),
+ [RPM_SPEC_DIR="rpm/$withval"])
+
+ AC_MSG_CHECKING([whether spec files are available])
+ AC_MSG_RESULT([yes ($RPM_SPEC_DIR/*.spec.in)])
+
AC_SUBST(HAVE_RPM)
AC_SUBST(RPM)
AC_SUBST(RPM_VERSION)
AC_SUBST(HAVE_RPMBUILD)
AC_SUBST(RPMBUILD)
AC_SUBST(RPMBUILD_VERSION)
+
+ AC_SUBST(RPM_SPEC_DIR)
+ AC_SUBST(RPM_DEFINE_UTIL)
+ AC_SUBST(RPM_DEFINE_KMOD)
+ AC_SUBST(RPM_DEFINE_DKMS)
+ AC_SUBST(RPM_DEFINE_COMMON)
+ AC_SUBST(SRPM_DEFINE_UTIL)
+ AC_SUBST(SRPM_DEFINE_KMOD)
+ AC_SUBST(SRPM_DEFINE_DKMS)
+ AC_SUBST(SRPM_DEFINE_COMMON)
])
dnl #
AC_SUBST(DPKGBUILD_VERSION)
])
-dnl #
-dnl # Check for pacman+makepkg to build Arch Linux packages. If these
-dnl # tools are missing it is non-fatal but you will not be able to
-dnl # build Arch Linux packages and will be warned if you try too.
-dnl #
-AC_DEFUN([SPL_AC_PACMAN], [
- PACMAN=pacman
- MAKEPKG=makepkg
-
- AC_MSG_CHECKING([whether $PACMAN is available])
- tmp=$($PACMAN --version 2>/dev/null)
- AS_IF([test -n "$tmp"], [
- PACMAN_VERSION=$(echo $tmp |
- $AWK '/Pacman/ { print $[3] }' |
- $SED 's/^v//')
- HAVE_PACMAN=yes
- AC_MSG_RESULT([$HAVE_PACMAN ($PACMAN_VERSION)])
- ],[
- HAVE_PACMAN=no
- AC_MSG_RESULT([$HAVE_PACMAN])
- ])
-
- AC_MSG_CHECKING([whether $MAKEPKG is available])
- tmp=$($MAKEPKG --version 2>/dev/null)
- AS_IF([test -n "$tmp"], [
- MAKEPKG_VERSION=$(echo $tmp | $AWK '/makepkg/ { print $[3] }')
- HAVE_MAKEPKG=yes
- AC_MSG_RESULT([$HAVE_MAKEPKG ($MAKEPKG_VERSION)])
- ],[
- HAVE_MAKEPKG=no
- AC_MSG_RESULT([$HAVE_MAKEPKG])
- ])
-
- AC_SUBST(HAVE_PACMAN)
- AC_SUBST(PACMAN)
- AC_SUBST(PACMAN_VERSION)
-
- AC_SUBST(HAVE_MAKEPKG)
- AC_SUBST(MAKEPKG)
- AC_SUBST(MAKEPKG_VERSION)
-])
-
dnl #
dnl # Until native packaging for various different packing systems
dnl # can be added the least we can do is attempt to use alien to
redhat) DEFAULT_PACKAGE=rpm ;;
fedora) DEFAULT_PACKAGE=rpm ;;
gentoo) DEFAULT_PACKAGE=tgz ;;
- arch) DEFAULT_PACKAGE=arch ;;
+ arch) DEFAULT_PACKAGE=tgz ;;
sles) DEFAULT_PACKAGE=rpm ;;
slackware) DEFAULT_PACKAGE=tgz ;;
lunar) DEFAULT_PACKAGE=tgz ;;
SPL_AC_RPM
SPL_AC_DPKG
SPL_AC_ALIEN
-
- AS_IF([test "$VENDOR" = "arch"], [SPL_AC_PACMAN])
])
AC_DEFUN([SPL_AC_LICENSE], [
+ AC_MSG_CHECKING([spl author])
+ AC_MSG_RESULT([$SPL_META_AUTHOR])
+
AC_MSG_CHECKING([spl license])
- LICENSE=GPL
- AC_MSG_RESULT([$LICENSE])
- KERNELCPPFLAGS="${KERNELCPPFLAGS} -DHAVE_GPL_ONLY_SYMBOLS"
- AC_SUBST(LICENSE)
+ AC_MSG_RESULT([$SPL_META_LICENSE])
])
AC_DEFUN([SPL_AC_CONFIG], [
AC_MSG_RESULT([$enable_debug])
])
-dnl #
-dnl # Enabled by default it provides a basic debug log infrastructure.
-dnl # Each subsystem registers itself with a name and logs messages
-dnl # using predefined types. If the debug mask it set to allow the
-dnl # message type it will be written to the internal log. The log
-dnl # can be dumped to a file by echoing 1 to the 'dump' proc entry,
-dnl # after dumping the log it must be decoded using the spl utility.
-dnl #
-dnl # echo 1 >/proc/sys/kernel/spl/debug/dump
-dnl # spl /tmp/spl-log.xxx.yyy /tmp/spl-log.xxx.yyy.txt
-dnl #
-AC_DEFUN([SPL_AC_DEBUG_LOG], [
- AC_ARG_ENABLE([debug-log],
- [AS_HELP_STRING([--enable-debug-log],
- [Enable basic debug logging @<:@default=yes@:>@])],
- [],
- [enable_debug_log=yes])
-
- AS_IF([test "x$enable_debug_log" = xyes],
- [
- KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG_LOG"
- DEBUG_LOG="_with_debug_log"
- AC_DEFINE([DEBUG_LOG], [1],
- [Define to 1 to enable basic debug logging])
- ], [
- DEBUG_LOG="_without_debug_log"
- ])
-
- AC_SUBST(DEBUG_LOG)
- AC_MSG_CHECKING([whether basic debug logging is enabled])
- AC_MSG_RESULT([$enable_debug_log])
-])
-
dnl #
dnl # Enabled by default it provides a minimal level of memory tracking.
dnl # A total count of bytes allocated is kept for each alloc and free.
dnl # Then at module unload time a report to the console will be printed
-dnl # if memory was leaked. Additionally, /proc/spl/kmem/slab will exist
-dnl # and provide an easy way to inspect the kmem based slab.
+dnl # if memory was leaked.
dnl #
AC_DEFUN([SPL_AC_DEBUG_KMEM], [
AC_ARG_ENABLE([debug-kmem],
[AS_HELP_STRING([--enable-debug-kmem],
- [Enable basic kmem accounting @<:@default=yes@:>@])],
+ [Enable basic kmem accounting @<:@default=no@:>@])],
[],
- [enable_debug_kmem=yes])
+ [enable_debug_kmem=no])
AS_IF([test "x$enable_debug_kmem" = xyes],
[
])
dnl #
-dnl # Basic toolchain sanity check.
+dnl # Basic toolchain sanity check. Verify that kernel modules can
+dnl # be built and which symbols can be used.
dnl #
AC_DEFUN([SPL_AC_TEST_MODULE],
[AC_MSG_CHECKING([whether modules can be built])
*** Please run 'make scripts' inside the kernel source tree.])
fi
])
+
+ AS_IF([test "x$cross_compiling" != xyes], [
+ AC_RUN_IFELSE([
+ AC_LANG_PROGRAM([
+ #include "$LINUX/include/linux/license.h"
+ ], [
+ return !license_is_gpl_compatible(
+ "$SPL_META_LICENSE");
+ ])
+ ], [
+ AC_DEFINE([SPL_IS_GPL_COMPATIBLE], [1],
+ [Define to 1 if GPL-only symbols can be used])
+ ], [
+ ])
+ ])
])
dnl #
AC_MSG_RESULT([$have_atomic64_t])
])
-dnl #
-dnl # 2.6.24 API change,
-dnl # check if atomic64_cmpxchg is defined
-dnl #
-AC_DEFUN([SPL_AC_TYPE_ATOMIC64_CMPXCHG],
- [AC_MSG_CHECKING([whether kernel defines atomic64_cmpxchg])
- SPL_LINUX_TRY_COMPILE([
- #include <linux/fs.h>
- ],[
- atomic64_cmpxchg((atomic64_t *)NULL, 0, 0);
- ],[
- AC_MSG_RESULT([yes])
- AC_DEFINE(HAVE_ATOMIC64_CMPXCHG, 1,
- [kernel defines atomic64_cmpxchg])
- ],[
- AC_MSG_RESULT([no])
- ])
-])
-
-dnl #
-dnl # 2.6.24 API change,
-dnl # check if atomic64_xchg is defined
-dnl #
-AC_DEFUN([SPL_AC_TYPE_ATOMIC64_XCHG],
- [AC_MSG_CHECKING([whether kernel defines atomic64_xchg])
- SPL_LINUX_TRY_COMPILE([
- #include <linux/fs.h>
- ],[
- atomic64_xchg((atomic64_t *)NULL, 0);
- ],[
- AC_MSG_RESULT([yes])
- AC_DEFINE(HAVE_ATOMIC64_XCHG, 1,
- [kernel defines atomic64_xchg])
- ],[
- AC_MSG_RESULT([no])
- ])
-])
-
-dnl #
-dnl # 2.6.24 API change,
-dnl # check if uintptr_t typedef is defined
-dnl #
-AC_DEFUN([SPL_AC_TYPE_UINTPTR_T],
- [AC_MSG_CHECKING([whether kernel defines uintptr_t])
- SPL_LINUX_TRY_COMPILE([
- #include <linux/types.h>
- ],[
- uintptr_t *ptr __attribute__ ((unused));
- ],[
- AC_MSG_RESULT([yes])
- AC_DEFINE(HAVE_UINTPTR_T, 1,
- [kernel defines uintptr_t])
- ],[
- AC_MSG_RESULT([no])
- ])
-])
-
-dnl #
-dnl # 2.6.21 API change,
-dnl # 'register_sysctl_table' use only one argument instead of two
-dnl #
-AC_DEFUN([SPL_AC_2ARGS_REGISTER_SYSCTL],
- [AC_MSG_CHECKING([whether register_sysctl_table() wants 2 args])
- SPL_LINUX_TRY_COMPILE([
- #include <linux/sysctl.h>
- ],[
- (void) register_sysctl_table(NULL, 0);
- ],[
- AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_2ARGS_REGISTER_SYSCTL, 1,
- [register_sysctl_table() wants 2 args])
- ],[
- AC_MSG_RESULT(no)
- ])
-])
-
-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"
])
dnl #
-dnl # 2.6.25 API change,
-dnl # struct path entry added to struct nameidata
+dnl # 2.6.33 API change,
+dnl # Removed .ctl_name from struct ctl_table.
dnl #
-AC_DEFUN([SPL_AC_PATH_IN_NAMEIDATA],
- [AC_MSG_CHECKING([whether struct path used in struct nameidata])
+AC_DEFUN([SPL_AC_CTL_NAME], [
+ AC_MSG_CHECKING([whether struct ctl_table has ctl_name])
SPL_LINUX_TRY_COMPILE([
- #include <linux/namei.h>
+ #include <linux/sysctl.h>
],[
- struct nameidata nd __attribute__ ((unused));
-
- nd.path.mnt = NULL;
- nd.path.dentry = NULL;
+ struct ctl_table ctl __attribute__ ((unused));
+ ctl.ctl_name = 0;
],[
AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_PATH_IN_NAMEIDATA, 1,
- [struct path used in struct nameidata])
+ AC_DEFINE(HAVE_CTL_NAME, 1, [struct ctl_table has ctl_name])
],[
AC_MSG_RESULT(no)
])
])
dnl #
-dnl # Custom SPL patch may export this system it is not required
+dnl # 3.10 API change,
+dnl # PDE is replaced by PDE_DATA
dnl #
-AC_DEFUN([SPL_AC_TASK_CURR],
- [AC_MSG_CHECKING([whether task_curr() is available])
+AC_DEFUN([SPL_AC_PDE_DATA], [
+ AC_MSG_CHECKING([whether PDE_DATA() is available])
SPL_LINUX_TRY_COMPILE_SYMBOL([
- #include <linux/sched.h>
+ #include <linux/proc_fs.h>
], [
- task_curr(NULL);
- ], [task_curr], [kernel/sched.c], [
+ PDE_DATA(NULL);
+ ], [PDE_DATA], [], [
AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_TASK_CURR, 1, [task_curr() is available])
- ], [
+ AC_DEFINE(HAVE_PDE_DATA, 1, [yes])
+ ],[
AC_MSG_RESULT(no)
])
])
dnl #
-dnl # 2.6.19 API change,
-dnl # Use CTL_UNNUMBERED when binary sysctl is not required
+dnl # 3.9 API change
+dnl # set_fs_pwd takes const struct path *
dnl #
-AC_DEFUN([SPL_AC_CTL_UNNUMBERED],
- [AC_MSG_CHECKING([whether unnumbered sysctl support exists])
+AC_DEFUN([SPL_AC_SET_FS_PWD_WITH_CONST],
+ tmp_flags="$EXTRA_KCFLAGS"
+ EXTRA_KCFLAGS="-Werror"
+ [AC_MSG_CHECKING([whether set_fs_pwd() requires const struct path *])
SPL_LINUX_TRY_COMPILE([
- #include <linux/sysctl.h>
+ #include <linux/spinlock.h>
+ #include <linux/fs_struct.h>
+ #include <linux/path.h>
+ void (*const set_fs_pwd_func)
+ (struct fs_struct *, const struct path *)
+ = set_fs_pwd;
],[
- #ifndef CTL_UNNUMBERED
- #error CTL_UNNUMBERED undefined
- #endif
+ return 0;
],[
AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_CTL_UNNUMBERED, 1,
- [unnumbered sysctl support exists])
- ],[
- AC_MSG_RESULT(no)
+ AC_DEFINE(HAVE_SET_FS_PWD_WITH_CONST, 1,
+ [set_fs_pwd() needs const path *])
+ ],[
+ SPL_LINUX_TRY_COMPILE([
+ #include <linux/spinlock.h>
+ #include <linux/fs_struct.h>
+ #include <linux/path.h>
+ void (*const set_fs_pwd_func)
+ (struct fs_struct *, struct path *)
+ = set_fs_pwd;
+ ],[
+ return 0;
+ ],[
+ AC_MSG_RESULT(no)
+ ],[
+ AC_MSG_ERROR(unknown)
+ ])
])
+ EXTRA_KCFLAGS="$tmp_flags"
])
dnl #
-dnl # 2.6.33 API change,
-dnl # Removed .ctl_name from struct ctl_table.
+dnl # 3.13 API change
+dnl # vfs_unlink() updated to take a third delegated_inode argument.
dnl #
-AC_DEFUN([SPL_AC_CTL_NAME], [
- AC_MSG_CHECKING([whether struct ctl_table has ctl_name])
+AC_DEFUN([SPL_AC_2ARGS_VFS_UNLINK],
+ [AC_MSG_CHECKING([whether vfs_unlink() wants 2 args])
SPL_LINUX_TRY_COMPILE([
- #include <linux/sysctl.h>
+ #include <linux/fs.h>
],[
- struct ctl_table ctl __attribute__ ((unused));
- ctl.ctl_name = 0;
+ vfs_unlink((struct inode *) NULL, (struct dentry *) NULL);
],[
AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_CTL_NAME, 1, [struct ctl_table has ctl_name])
+ 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 # 2.6.16 API change.
-dnl # Check if 'fls64()' is available
+dnl # 3.13 and 3.15 API changes
+dnl # Added delegated inode and flags argument.
dnl #
-AC_DEFUN([SPL_AC_FLS64],
- [AC_MSG_CHECKING([whether fls64() is available])
+AC_DEFUN([SPL_AC_4ARGS_VFS_RENAME],
+ [AC_MSG_CHECKING([whether vfs_rename() wants 4 args])
SPL_LINUX_TRY_COMPILE([
- #include <linux/bitops.h>
+ #include <linux/fs.h>
],[
- return fls64(0);
+ vfs_rename((struct inode *) NULL, (struct dentry *) NULL,
+ (struct inode *) NULL, (struct dentry *) NULL);
],[
AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_FLS64, 1, [fls64() is available])
+ 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 # 2.6.18 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],
- [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 #
-dnl # 2.6.27 API change,
-dnl # device_create() uses 5 args, new 'drvdata' argument.
+dnl # 2.6.36 API change,
+dnl # The 'struct fs_struct->lock' was changed from a rwlock_t to
+dnl # a spinlock_t to improve the fastpath performance.
dnl #
-AC_DEFUN([SPL_AC_5ARGS_DEVICE_CREATE], [
- AC_MSG_CHECKING([whether device_create() wants 5 args])
+AC_DEFUN([SPL_AC_FS_STRUCT_SPINLOCK], [
+ AC_MSG_CHECKING([whether struct fs_struct uses spinlock_t])
tmp_flags="$EXTRA_KCFLAGS"
EXTRA_KCFLAGS="-Werror"
SPL_LINUX_TRY_COMPILE([
- #include <linux/device.h>
+ #include <linux/sched.h>
+ #include <linux/fs_struct.h>
],[
- device_create(NULL, NULL, 0, NULL, "%d", 1);
+ static struct fs_struct fs;
+ spin_lock_init(&fs.lock);
],[
AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_5ARGS_DEVICE_CREATE, 1,
- [device_create wants 5 args])
+ AC_DEFINE(HAVE_FS_STRUCT_SPINLOCK, 1,
+ [struct fs_struct uses spinlock_t])
],[
AC_MSG_RESULT(no)
])
])
dnl #
-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 # User namespaces, use kuid_t in place of uid_t
+dnl # where available. Not strictly a user namespaces thing
+dnl # but it should prevent surprises
dnl #
-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_DEFUN([SPL_AC_KUIDGID_T], [
+ AC_MSG_CHECKING([whether kuid_t/kgid_t is available])
+ SPL_LINUX_TRY_COMPILE([
+ #include <linux/uidgid.h>
], [
+ kuid_t userid = KUIDT_INIT(0);
+ kgid_t groupid = KGIDT_INIT(0);
+ ],[
+ SPL_LINUX_TRY_COMPILE([
+ #include <linux/uidgid.h>
+ ], [
+ kuid_t userid = 0;
+ kgid_t groupid = 0;
+ ],[
+ AC_MSG_RESULT(yes; optional)
+ ],[
+ AC_MSG_RESULT(yes; mandatory)
+ AC_DEFINE(HAVE_KUIDGID_T, 1, [kuid_t/kgid_t in use])
+ ])
+ ],[
AC_MSG_RESULT(no)
])
])
dnl #
-dnl # 2.6.26 API change, set_normalized_timespec() is exported.
+dnl # 2.6.39 API change,
+dnl # __put_task_struct() was exported by the mainline kernel.
dnl #
-AC_DEFUN([SPL_AC_SET_NORMALIZED_TIMESPEC_EXPORT],
- [AC_MSG_CHECKING([whether set_normalized_timespec() is available as export])
+AC_DEFUN([SPL_AC_PUT_TASK_STRUCT],
+ [AC_MSG_CHECKING([whether __put_task_struct() is available])
SPL_LINUX_TRY_COMPILE_SYMBOL([
- #include <linux/time.h>
+ #include <linux/sched.h>
], [
- set_normalized_timespec(NULL, 0, 0);
- ], [set_normalized_timespec], [kernel/time.c], [
+ __put_task_struct(NULL);
+ ], [__put_task_struct], [], [
AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_SET_NORMALIZED_TIMESPEC_EXPORT, 1,
- [set_normalized_timespec() is available as export])
+ AC_DEFINE(HAVE_PUT_TASK_STRUCT, 1,
+ [__put_task_struct() is available])
], [
AC_MSG_RESULT(no)
])
])
dnl #
-dnl # 2.6.16 API change, set_normalize_timespec() moved to time.c
-dnl # previously it was available in time.h as an inline.
+dnl # 2.6.35 API change,
+dnl # Unused 'struct dentry *' removed from vfs_fsync() prototype.
dnl #
-AC_DEFUN([SPL_AC_SET_NORMALIZED_TIMESPEC_INLINE], [
- AC_MSG_CHECKING([whether set_normalized_timespec() is an inline])
+AC_DEFUN([SPL_AC_2ARGS_VFS_FSYNC], [
+ AC_MSG_CHECKING([whether vfs_fsync() wants 2 args])
SPL_LINUX_TRY_COMPILE([
- #include <linux/time.h>
- void set_normalized_timespec(struct timespec *ts,
- time_t sec, long nsec) { }
- ],
- [],
- [
- AC_MSG_RESULT(no)
+ #include <linux/fs.h>
+ ],[
+ vfs_fsync(NULL, 0);
],[
AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_SET_NORMALIZED_TIMESPEC_INLINE, 1,
- [set_normalized_timespec() is available as inline])
+ AC_DEFINE(HAVE_2ARGS_VFS_FSYNC, 1, [vfs_fsync() wants 2 args])
+ ],[
+ AC_MSG_RESULT(no)
])
])
dnl #
-dnl # 2.6.18 API change,
-dnl # timespec_sub() inline function available in linux/time.h
+dnl # 3.5 API change,
+dnl # inode_operations.truncate_range removed
dnl #
-AC_DEFUN([SPL_AC_TIMESPEC_SUB], [
- AC_MSG_CHECKING([whether timespec_sub() is available])
+AC_DEFUN([SPL_AC_INODE_TRUNCATE_RANGE], [
+ AC_MSG_CHECKING([whether truncate_range() inode operation is available])
SPL_LINUX_TRY_COMPILE([
- #include <linux/time.h>
+ #include <linux/fs.h>
],[
- struct timespec a = { 0 };
- struct timespec b = { 0 };
- struct timespec c __attribute__ ((unused));
- c = timespec_sub(a, b);
+ struct inode_operations ops;
+ ops.truncate_range = NULL;
],[
AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_TIMESPEC_SUB, 1, [timespec_sub() is available])
+ AC_DEFINE(HAVE_INODE_TRUNCATE_RANGE, 1,
+ [truncate_range() inode operation is available])
],[
AC_MSG_RESULT(no)
])
])
dnl #
-dnl # 2.6.19 API change,
-dnl # check if init_utsname() is available in linux/utsname.h
+dnl # Linux 2.6.38 - 3.x API
dnl #
-AC_DEFUN([SPL_AC_INIT_UTSNAME], [
- AC_MSG_CHECKING([whether init_utsname() is available])
+AC_DEFUN([SPL_AC_KERNEL_FILE_FALLOCATE], [
+ AC_MSG_CHECKING([whether fops->fallocate() exists])
SPL_LINUX_TRY_COMPILE([
- #include <linux/utsname.h>
+ #include <linux/fs.h>
],[
- struct new_utsname *a __attribute__ ((unused));
- a = init_utsname();
+ long (*fallocate) (struct file *, int, loff_t, loff_t) = NULL;
+ struct file_operations fops __attribute__ ((unused)) = {
+ .fallocate = fallocate,
+ };
],[
AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_INIT_UTSNAME, 1, [init_utsname() is available])
+ AC_DEFINE(HAVE_FILE_FALLOCATE, 1, [fops->fallocate() exists])
],[
AC_MSG_RESULT(no)
])
])
dnl #
-dnl # 2.6.18 API change,
-dnl # added linux/uaccess.h
+dnl # Linux 2.6.x - 2.6.37 API
dnl #
-AC_DEFUN([SPL_AC_UACCESS_HEADER], [
- SPL_CHECK_HEADER([linux/uaccess.h], [UACCESS], [], [])
+AC_DEFUN([SPL_AC_KERNEL_INODE_FALLOCATE], [
+ AC_MSG_CHECKING([whether iops->fallocate() exists])
+ SPL_LINUX_TRY_COMPILE([
+ #include <linux/fs.h>
+ ],[
+ long (*fallocate) (struct inode *, int, loff_t, loff_t) = NULL;
+ struct inode_operations fops __attribute__ ((unused)) = {
+ .fallocate = fallocate,
+ };
+ ],[
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_INODE_FALLOCATE, 1, [fops->fallocate() exists])
+ ],[
+ AC_MSG_RESULT(no)
+ ])
])
dnl #
-dnl # 2.6.12 API change,
-dnl # check whether 'kmalloc_node()' is available.
+dnl # PaX Linux 2.6.38 - 3.x API
dnl #
-AC_DEFUN([SPL_AC_KMALLOC_NODE], [
- AC_MSG_CHECKING([whether kmalloc_node() is available])
+AC_DEFUN([SPL_AC_PAX_KERNEL_FILE_FALLOCATE], [
+ AC_MSG_CHECKING([whether fops->fallocate() exists])
SPL_LINUX_TRY_COMPILE([
- #include <linux/slab.h>
+ #include <linux/fs.h>
],[
- void *a __attribute__ ((unused));
- a = kmalloc_node(1, GFP_KERNEL, 0);
+ long (*fallocate) (struct file *, int, loff_t, loff_t) = NULL;
+ struct file_operations_no_const fops __attribute__ ((unused)) = {
+ .fallocate = fallocate,
+ };
],[
AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_KMALLOC_NODE, 1, [kmalloc_node() is available])
+ AC_DEFINE(HAVE_FILE_FALLOCATE, 1, [fops->fallocate() exists])
],[
AC_MSG_RESULT(no)
])
])
dnl #
-dnl # 2.6.9 API change,
-dnl # check whether 'monotonic_clock()' is available it may
-dnl # be available for some archs but not others.
-dnl #
-AC_DEFUN([SPL_AC_MONOTONIC_CLOCK],
- [AC_MSG_CHECKING([whether monotonic_clock() is available])
- SPL_LINUX_TRY_COMPILE_SYMBOL([
- #include <linux/timex.h>
- ], [
- monotonic_clock();
- ], [monotonic_clock], [], [
- AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_MONOTONIC_CLOCK, 1,
- [monotonic_clock() is available])
- ], [
- AC_MSG_RESULT(no)
- ])
+dnl # The fallocate callback was moved from the inode_operations
+dnl # structure to the file_operations structure.
+dnl #
+AC_DEFUN([SPL_AC_KERNEL_FALLOCATE], [
+ SPL_AC_KERNEL_FILE_FALLOCATE
+ SPL_AC_KERNEL_INODE_FALLOCATE
+ SPL_AC_PAX_KERNEL_FILE_FALLOCATE
])
dnl #
-dnl # 2.6.16 API change,
-dnl # check whether 'struct inode' has i_mutex
+dnl # zlib inflate compat,
+dnl # Verify the kernel has CONFIG_ZLIB_INFLATE support enabled.
dnl #
-AC_DEFUN([SPL_AC_INODE_I_MUTEX], [
- AC_MSG_CHECKING([whether struct inode has i_mutex])
+AC_DEFUN([SPL_AC_CONFIG_ZLIB_INFLATE], [
+ AC_MSG_CHECKING([whether CONFIG_ZLIB_INFLATE is defined])
SPL_LINUX_TRY_COMPILE([
- #include <linux/fs.h>
- #include <linux/mutex.h>
- ],[
- struct inode i;
- mutex_init(&i.i_mutex);
- ],[
- AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_INODE_I_MUTEX, 1, [struct inode has i_mutex])
+ #if !defined(CONFIG_ZLIB_INFLATE) && \
+ !defined(CONFIG_ZLIB_INFLATE_MODULE)
+ #error CONFIG_ZLIB_INFLATE not defined
+ #endif
+ ],[ ],[
+ AC_MSG_RESULT([yes])
],[
- AC_MSG_RESULT(no)
+ AC_MSG_RESULT([no])
+ AC_MSG_ERROR([
+ *** This kernel does not include the required zlib inflate support.
+ *** Rebuild the kernel with CONFIG_ZLIB_INFLATE=y|m set.])
])
])
dnl #
-dnl # 2.6.29 API change,
-dnl # Adaptive mutexs introduced.
+dnl # zlib deflate compat,
+dnl # Verify the kernel has CONFIG_ZLIB_DEFLATE support enabled.
dnl #
-AC_DEFUN([SPL_AC_MUTEX_OWNER], [
- AC_MSG_CHECKING([whether struct mutex has owner])
+AC_DEFUN([SPL_AC_CONFIG_ZLIB_DEFLATE], [
+ AC_MSG_CHECKING([whether CONFIG_ZLIB_DEFLATE is defined])
SPL_LINUX_TRY_COMPILE([
- #include <linux/mutex.h>
- ],[
- struct mutex mtx __attribute__ ((unused));
- mtx.owner = NULL;
- ],[
- AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_MUTEX_OWNER, 1, [struct mutex has owner])
+ #if !defined(CONFIG_ZLIB_DEFLATE) && \
+ !defined(CONFIG_ZLIB_DEFLATE_MODULE)
+ #error CONFIG_ZLIB_DEFLATE not defined
+ #endif
+ ],[ ],[
+ AC_MSG_RESULT([yes])
],[
- AC_MSG_RESULT(no)
+ AC_MSG_RESULT([no])
+ AC_MSG_ERROR([
+ *** This kernel does not include the required zlib deflate support.
+ *** Rebuild the kernel with CONFIG_ZLIB_DEFLATE=y|m set.])
])
])
dnl #
-dnl # 2.6.39 API change,
-dnl # Owner type change. A Linux mutex prior to 2.6.39 would store
-dnl # the owner as a thread_info pointer when CONFIG_DEBUG_MUTEXES
-dnl # was defined. As of 2.6.39 this was changed to a task_struct
-dnl # pointer which frankly makes a lot more sense.
+dnl # config trim unused symbols,
+dnl # Verify the kernel has CONFIG_TRIM_UNUSED_KSYMS DISABLED.
dnl #
-AC_DEFUN([SPL_AC_MUTEX_OWNER_TASK_STRUCT], [
- AC_MSG_CHECKING([whether struct mutex owner is a task_struct])
- tmp_flags="$EXTRA_KCFLAGS"
- EXTRA_KCFLAGS="-Werror"
+AC_DEFUN([SPL_AC_CONFIG_TRIM_UNUSED_KSYMS], [
+ AC_MSG_CHECKING([whether CONFIG_TRIM_UNUSED_KSYM is disabled])
SPL_LINUX_TRY_COMPILE([
- #include <linux/mutex.h>
- ],[
- struct mutex mtx __attribute__ ((unused));
- mtx.owner = current;
- ],[
- AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_MUTEX_OWNER_TASK_STRUCT, 1,
- [struct mutex owner is a task_struct])
+ #if defined(CONFIG_TRIM_UNUSED_KSYMS)
+ #error CONFIG_TRIM_UNUSED_KSYMS not defined
+ #endif
+ ],[ ],[
+ AC_MSG_RESULT([yes])
],[
- AC_MSG_RESULT(no)
+ AC_MSG_RESULT([no])
+ AC_MSG_ERROR([
+ *** This kernel has unused symbols trimming enabled, please disable.
+ *** Rebuild the kernel with CONFIG_TRIM_UNUSED_KSYMS=n set.])
])
- EXTRA_KCFLAGS="$tmp_flags"
])
dnl #
-dnl # 2.6.18 API change,
-dnl # First introduced 'mutex_lock_nested()' in include/linux/mutex.h,
-dnl # as part of the mutex validator. Fallback to using 'mutex_lock()'
-dnl # if the mutex validator is disabled or otherwise unavailable.
+dnl # 2.6.39 API compat,
+dnl # The function zlib_deflate_workspacesize() now take 2 arguments.
+dnl # This was done to avoid always having to allocate the maximum size
+dnl # workspace (268K). The caller can now specific the windowBits and
+dnl # memLevel compression parameters to get a smaller workspace.
dnl #
-AC_DEFUN([SPL_AC_MUTEX_LOCK_NESTED], [
- AC_MSG_CHECKING([whether mutex_lock_nested() is available])
+AC_DEFUN([SPL_AC_2ARGS_ZLIB_DEFLATE_WORKSPACESIZE],
+ [AC_MSG_CHECKING([whether zlib_deflate_workspacesize() wants 2 args])
SPL_LINUX_TRY_COMPILE([
- #include <linux/mutex.h>
+ #include <linux/zlib.h>
],[
- struct mutex mutex;
- mutex_init(&mutex);
- mutex_lock_nested(&mutex, 0);
+ return zlib_deflate_workspacesize(MAX_WBITS, MAX_MEM_LEVEL);
],[
AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_MUTEX_LOCK_NESTED, 1,
- [mutex_lock_nested() is available])
+ AC_DEFINE(HAVE_2ARGS_ZLIB_DEFLATE_WORKSPACESIZE, 1,
+ [zlib_deflate_workspacesize() wants 2 args])
],[
AC_MSG_RESULT(no)
])
])
dnl #
-dnl # 2.6.27 API change,
-dnl # on_each_cpu() uses 3 args, no 'retry' argument
+dnl # 2.6.39 API change,
+dnl # Shrinker adjust to use common shrink_control structure.
dnl #
-AC_DEFUN([SPL_AC_3ARGS_ON_EACH_CPU], [
- AC_MSG_CHECKING([whether on_each_cpu() wants 3 args])
+AC_DEFUN([SPL_AC_SHRINK_CONTROL_STRUCT], [
+ AC_MSG_CHECKING([whether struct shrink_control exists])
SPL_LINUX_TRY_COMPILE([
- #include <linux/interrupt.h>
- #include <linux/smp.h>
-
- void on_each_cpu_func(void *data) { return; }
+ #include <linux/mm.h>
],[
- on_each_cpu(on_each_cpu_func, NULL, 0);
+ struct shrink_control sc __attribute__ ((unused));
+
+ sc.nr_to_scan = 0;
+ sc.gfp_mask = GFP_KERNEL;
],[
AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_3ARGS_ON_EACH_CPU, 1,
- [on_each_cpu wants 3 args])
+ AC_DEFINE(HAVE_SHRINK_CONTROL_STRUCT, 1,
+ [struct shrink_control exists])
],[
AC_MSG_RESULT(no)
])
])
dnl #
-dnl # 2.6.18 API change,
-dnl # kallsyms_lookup_name no longer exported
-dnl #
-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 #
-dnl # Proposed API change,
-dnl # This symbol is not available in stock kernels. You may build a
-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],
- [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 #
-dnl # 2.6.17 API change
-dnl # The helper functions first_online_pgdat(), next_online_pgdat(), and
-dnl # next_zone() are introduced to simplify for_each_zone(). These symbols
-dnl # were exported in 2.6.17 for use by modules which was consistent with
-dnl # the previous implementation of for_each_zone(). From 2.6.18 - 2.6.19
-dnl # the symbols were exported as 'unused', and by 2.6.20 they exports
-dnl # were dropped entirely leaving modules no way to directly iterate over
-dnl # the zone list. Because we need access to the zone helpers we check
-dnl # if the kernel contains the old or new implementation. Then we check
-dnl # to see if the symbols we need for each version are available. If they
-dnl # are not, dynamically aquire the addresses with kallsyms_lookup_name().
-dnl #
-AC_DEFUN([SPL_AC_PGDAT_HELPERS], [
- AC_MSG_CHECKING([whether symbol *_pgdat exist])
- grep -q -E 'first_online_pgdat' $LINUX/include/linux/mmzone.h 2>/dev/null
- rc=$?
- if test $rc -eq 0; then
- AC_MSG_RESULT([yes])
- AC_DEFINE(HAVE_PGDAT_HELPERS, 1, [pgdat helpers are available])
- else
- AC_MSG_RESULT([no])
- fi
-])
-
-dnl #
-dnl # Proposed API change,
-dnl # This symbol is not available in stock kernels. You may build a
-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],
- [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 #
-dnl # Proposed API change,
-dnl # This symbol is not available in stock kernels. You may build a
-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],
- [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 # 3.1 API Change
dnl #
-dnl # Proposed API change,
-dnl # This symbol is not available in stock kernels. You may build a
-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 # The rw_semaphore.wait_lock member was changed from spinlock_t to
+dnl # raw_spinlock_t at commit ddb6c9b58a19edcfac93ac670b066c836ff729f1.
dnl #
-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_DEFUN([SPL_AC_RWSEM_SPINLOCK_IS_RAW], [
+ AC_MSG_CHECKING([whether struct rw_semaphore member wait_lock is raw])
+ tmp_flags="$EXTRA_KCFLAGS"
+ EXTRA_KCFLAGS="-Werror"
+ SPL_LINUX_TRY_COMPILE([
+ #include <linux/rwsem.h>
+ ],[
+ struct rw_semaphore dummy_semaphore __attribute__ ((unused));
+ raw_spinlock_t dummy_lock __attribute__ ((unused));
+ dummy_semaphore.wait_lock = dummy_lock;
+ ],[
AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_NEXT_ZONE, 1, [next_zone() is available])
- ], [
+ AC_DEFINE(RWSEM_SPINLOCK_IS_RAW, 1,
+ [struct rw_semaphore member wait_lock is raw_spinlock_t])
+ ],[
AC_MSG_RESULT(no)
])
+ EXTRA_KCFLAGS="$tmp_flags"
])
dnl #
-dnl # 2.6.17 API change,
-dnl # See SPL_AC_PGDAT_HELPERS for details.
-dnl #
-AC_DEFUN([SPL_AC_PGDAT_LIST],
- [AC_MSG_CHECKING([whether pgdat_list is available])
- SPL_LINUX_TRY_COMPILE_SYMBOL([
- #include <linux/topology.h>
- pg_data_t *tmp = pgdat_list;
- ], [], [pgdat_list], [], [
- AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_PGDAT_LIST, 1, [pgdat_list is available])
- ], [
- AC_MSG_RESULT(no)
- ])
-])
-
+dnl # 3.16 API Change
dnl #
-dnl # 2.6.18 API change,
-dnl # First introduced global_page_state() support as an inline.
+dnl # rwsem-spinlock "->activity" changed to "->count"
dnl #
-AC_DEFUN([SPL_AC_GLOBAL_PAGE_STATE], [
- AC_MSG_CHECKING([whether global_page_state() is available])
+AC_DEFUN([SPL_AC_RWSEM_ACTIVITY], [
+ AC_MSG_CHECKING([whether struct rw_semaphore has member activity])
+ tmp_flags="$EXTRA_KCFLAGS"
+ EXTRA_KCFLAGS="-Werror"
SPL_LINUX_TRY_COMPILE([
- #include <linux/mm.h>
+ #include <linux/rwsem.h>
],[
- unsigned long state __attribute__ ((unused));
- state = global_page_state(0);
+ struct rw_semaphore dummy_semaphore __attribute__ ((unused));
+ dummy_semaphore.activity = 0;
],[
AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_GLOBAL_PAGE_STATE, 1,
- [global_page_state() is available])
+ AC_DEFINE(HAVE_RWSEM_ACTIVITY, 1,
+ [struct rw_semaphore has member activity])
],[
AC_MSG_RESULT(no)
])
+ EXTRA_KCFLAGS="$tmp_flags"
])
dnl #
-dnl # 2.6.21 API change (plus subsequent naming convention changes),
-dnl # Public global zone stats now include a free page count. However
-dnl # the enumerated names of the counters have changed since this API
-dnl # was introduced. We need to deduce the corrent name to use. This
-dnl # replaces the priviate get_zone_counts() interface.
+dnl # 4.8 API Change
dnl #
-dnl # NR_FREE_PAGES was available from 2.6.21 to current kernels, which
-dnl # is 2.6.30 as of when this was written.
+dnl # rwsem "->count" changed to atomic_long_t type
dnl #
-AC_DEFUN([SPL_AC_ZONE_STAT_ITEM_FREE], [
- AC_MSG_CHECKING([whether page state NR_FREE_PAGES is available])
+AC_DEFUN([SPL_AC_RWSEM_ATOMIC_LONG_COUNT], [
+ AC_MSG_CHECKING(
+ [whether struct rw_semaphore has atomic_long_t member count])
+ tmp_flags="$EXTRA_KCFLAGS"
+ EXTRA_KCFLAGS="-Werror"
SPL_LINUX_TRY_COMPILE([
- #include <linux/mm.h>
+ #include <linux/rwsem.h>
],[
- enum zone_stat_item zsi __attribute__ ((unused));
- zsi = NR_FREE_PAGES;
+ DECLARE_RWSEM(dummy_semaphore);
+ (void) atomic_long_read(&dummy_semaphore.count);
],[
AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_FREE_PAGES, 1,
- [Page state NR_FREE_PAGES is available])
+ AC_DEFINE(HAVE_RWSEM_ATOMIC_LONG_COUNT, 1,
+ [struct rw_semaphore has atomic_long_t member count])
],[
AC_MSG_RESULT(no)
])
+ EXTRA_KCFLAGS="$tmp_flags"
])
dnl #
-dnl # 2.6.21 API change (plus subsequent naming convention changes),
-dnl # Public global zone stats now include an inactive page count. However
-dnl # the enumerated names of the counters have changed since this API
-dnl # was introduced. We need to deduce the corrent name to use. This
-dnl # replaces the priviate get_zone_counts() interface.
+dnl # 3.9 API change,
+dnl # Moved things from linux/sched.h to linux/sched/rt.h
dnl #
-dnl # NR_INACTIVE was available from 2.6.21 to 2.6.27 and included both
-dnl # anonymous and file inactive pages. As of 2.6.28 it was split in
-dnl # to NR_INACTIVE_ANON and NR_INACTIVE_FILE.
-dnl #
-AC_DEFUN([SPL_AC_ZONE_STAT_ITEM_INACTIVE], [
- AC_MSG_CHECKING([whether page state NR_INACTIVE is available])
+AC_DEFUN([SPL_AC_SCHED_RT_HEADER],
+ [AC_MSG_CHECKING([whether header linux/sched/rt.h exists])
SPL_LINUX_TRY_COMPILE([
- #include <linux/mm.h>
+ #include <linux/sched.h>
+ #include <linux/sched/rt.h>
],[
- enum zone_stat_item zsi __attribute__ ((unused));
- zsi = NR_INACTIVE;
+ return 0;
],[
+ AC_DEFINE(HAVE_SCHED_RT_HEADER, 1, [linux/sched/rt.h exists])
AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_INACTIVE, 1,
- [Page state NR_INACTIVE is available])
],[
AC_MSG_RESULT(no)
])
+])
- AC_MSG_CHECKING([whether page state NR_INACTIVE_ANON is available])
+dnl #
+dnl # 3.9 API change,
+dnl # vfs_getattr() uses 2 args
+dnl # It takes struct path * instead of struct vfsmount * and struct dentry *
+dnl #
+AC_DEFUN([SPL_AC_2ARGS_VFS_GETATTR], [
+ AC_MSG_CHECKING([whether vfs_getattr() wants])
SPL_LINUX_TRY_COMPILE([
- #include <linux/mm.h>
+ #include <linux/fs.h>
],[
- enum zone_stat_item zsi __attribute__ ((unused));
- zsi = NR_INACTIVE_ANON;
+ vfs_getattr((struct path *) NULL,
+ (struct kstat *)NULL);
],[
- AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_INACTIVE_ANON, 1,
- [Page state NR_INACTIVE_ANON is available])
+ AC_MSG_RESULT(2 args)
+ AC_DEFINE(HAVE_2ARGS_VFS_GETATTR, 1,
+ [vfs_getattr wants 2 args])
],[
- AC_MSG_RESULT(no)
+ SPL_LINUX_TRY_COMPILE([
+ #include <linux/fs.h>
+ ],[
+ vfs_getattr((struct vfsmount *)NULL,
+ (struct dentry *)NULL,
+ (struct kstat *)NULL);
+ ],[
+ AC_MSG_RESULT(3 args)
+ ],[
+ AC_MSG_ERROR(unknown)
+ ])
])
+])
- AC_MSG_CHECKING([whether page state NR_INACTIVE_FILE is available])
+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/mm.h>
+ #include <linux/delay.h>
],[
- enum zone_stat_item zsi __attribute__ ((unused));
- zsi = NR_INACTIVE_FILE;
+ usleep_range(0, 0);
],[
AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_INACTIVE_FILE, 1,
- [Page state NR_INACTIVE_FILE is available])
+ AC_DEFINE(HAVE_USLEEP_RANGE, 1,
+ [usleep_range is available])
],[
AC_MSG_RESULT(no)
])
])
dnl #
-dnl # 2.6.21 API change (plus subsequent naming convention changes),
-dnl # Public global zone stats now include an active page count. However
-dnl # the enumerated names of the counters have changed since this API
-dnl # was introduced. We need to deduce the corrent name to use. This
-dnl # replaces the priviate get_zone_counts() interface.
-dnl #
-dnl # NR_ACTIVE was available from 2.6.21 to 2.6.27 and included both
-dnl # anonymous and file active pages. As of 2.6.28 it was split in
-dnl # to NR_ACTIVE_ANON and NR_ACTIVE_FILE.
+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_ZONE_STAT_ITEM_ACTIVE], [
- AC_MSG_CHECKING([whether page state NR_ACTIVE is available])
+AC_DEFUN([SPL_AC_KMEM_CACHE_ALLOCFLAGS], [
+ AC_MSG_CHECKING([whether struct kmem_cache has allocflags])
SPL_LINUX_TRY_COMPILE([
- #include <linux/mm.h>
+ #include <linux/slab.h>
],[
- enum zone_stat_item zsi __attribute__ ((unused));
- zsi = NR_ACTIVE;
+ struct kmem_cache cachep __attribute__ ((unused));
+ cachep.allocflags = GFP_KERNEL;
],[
AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_ACTIVE, 1,
- [Page state NR_ACTIVE is available])
+ 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)
+ ])
])
+])
- AC_MSG_CHECKING([whether page state NR_ACTIVE_ANON is available])
+dnl #
+dnl # 3.17 API change,
+dnl # wait_on_bit() no longer requires an action argument. The former
+dnl # "wait_on_bit" interface required an 'action' function to be provided
+dnl # which does the actual waiting. There were over 20 such functions in the
+dnl # kernel, many of them identical, though most cases can be satisfied by one
+dnl # of just two functions: one which uses io_schedule() and one which just
+dnl # uses schedule(). This API change was made to consolidate all of those
+dnl # redundant wait functions.
+dnl #
+AC_DEFUN([SPL_AC_WAIT_ON_BIT], [
+ AC_MSG_CHECKING([whether wait_on_bit() takes an action])
SPL_LINUX_TRY_COMPILE([
- #include <linux/mm.h>
+ #include <linux/wait.h>
],[
- enum zone_stat_item zsi __attribute__ ((unused));
- zsi = NR_ACTIVE_ANON;
+ int (*action)(void *) = NULL;
+ wait_on_bit(NULL, 0, action, 0);
],[
AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_ACTIVE_ANON, 1,
- [Page state NR_ACTIVE_ANON is available])
+ AC_DEFINE(HAVE_WAIT_ON_BIT_ACTION, 1, [yes])
],[
AC_MSG_RESULT(no)
])
+])
- AC_MSG_CHECKING([whether page state NR_ACTIVE_FILE is available])
+dnl #
+dnl # Check whether mutex has owner with task_struct type.
+dnl #
+dnl # Note that before Linux 3.0, mutex owner is of type thread_info.
+dnl #
+dnl # Note that in Linux 3.18, the condition for owner is changed from
+dnl # defined(CONFIG_DEBUG_MUTEXES) || defined(CONFIG_SMP) to
+dnl # defined(CONFIG_DEBUG_MUTEXES) || defined(CONFIG_MUTEX_SPIN_ON_OWNER)
+dnl #
+AC_DEFUN([SPL_AC_MUTEX_OWNER], [
+ AC_MSG_CHECKING([whether mutex has owner])
+ tmp_flags="$EXTRA_KCFLAGS"
+ EXTRA_KCFLAGS="-Werror"
SPL_LINUX_TRY_COMPILE([
- #include <linux/mm.h>
+ #include <linux/mutex.h>
],[
- enum zone_stat_item zsi __attribute__ ((unused));
- zsi = NR_ACTIVE_FILE;
+ DEFINE_MUTEX(m);
+ struct task_struct *t __attribute__ ((unused));
+ t = m.owner;
],[
AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_ACTIVE_FILE, 1,
- [Page state NR_ACTIVE_FILE is available])
+ AC_DEFINE(HAVE_MUTEX_OWNER, 1, [yes])
],[
AC_MSG_RESULT(no)
])
+ EXTRA_KCFLAGS="$tmp_flags"
])
dnl #
-dnl # Proposed API change for legacy kernels.
-dnl # This symbol is not available in older kernels. For kernels post
-dnl # 2.6.21 the global_page_state() API is used to get free/inactive/active
-dnl # page state information. This symbol is only used in legacy kernels
-dnl # any only as a last resort.
-dnl
-AC_DEFUN([SPL_AC_GET_ZONE_COUNTS], [
- AC_MSG_CHECKING([whether symbol get_zone_counts is needed])
+dnl # 4.7 API change
+dnl # i_mutex is changed to i_rwsem. Instead of directly using
+dnl # i_mutex/i_rwsem, we should use inode_lock() and inode_lock_shared()
+dnl # We test inode_lock_shared because inode_lock is introduced earlier.
+dnl #
+AC_DEFUN([SPL_AC_INODE_LOCK], [
+ AC_MSG_CHECKING([whether inode_lock_shared() exists])
+ tmp_flags="$EXTRA_KCFLAGS"
+ EXTRA_KCFLAGS="-Werror"
SPL_LINUX_TRY_COMPILE([
+ #include <linux/fs.h>
],[
- #if !defined(HAVE_ZONE_STAT_ITEM_NR_FREE_PAGES)
- #error "global_page_state needs NR_FREE_PAGES"
- #endif
-
- #if !defined(HAVE_ZONE_STAT_ITEM_NR_ACTIVE) && \
- !defined(HAVE_ZONE_STAT_ITEM_NR_ACTIVE_ANON) && \
- !defined(HAVE_ZONE_STAT_ITEM_NR_ACTIVE_FILE)
- #error "global_page_state needs NR_ACTIVE*"
- #endif
-
- #if !defined(HAVE_ZONE_STAT_ITEM_NR_INACTIVE) && \
- !defined(HAVE_ZONE_STAT_ITEM_NR_INACTIVE_ANON) && \
- !defined(HAVE_ZONE_STAT_ITEM_NR_INACTIVE_FILE)
- #error "global_page_state needs NR_INACTIVE*"
- #endif
- ],[
- AC_MSG_RESULT(no)
+ struct inode *inode = NULL;
+ inode_lock_shared(inode);
],[
AC_MSG_RESULT(yes)
- AC_DEFINE(NEED_GET_ZONE_COUNTS, 1,
- [get_zone_counts() is needed])
-
- 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)
- ])
- ])
-])
-
-dnl #
-dnl # 2.6.27 API change,
-dnl # The user_path_dir() replaces __user_walk()
-dnl #
-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],
- [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 #
-dnl # 2.6.25 API change,
-dnl # Simplied API by replacing mnt+dentry args with a single path arg.
-dnl #
-AC_DEFUN([SPL_AC_2ARGS_SET_FS_PWD],
- [AC_MSG_CHECKING([whether set_fs_pwd() wants 2 args])
- SPL_LINUX_TRY_COMPILE([
- #include <linux/sched.h>
- #include <linux/fs_struct.h>
- ],[
- set_fs_pwd(NULL, NULL);
- ],[
- AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_2ARGS_SET_FS_PWD, 1,
- [set_fs_pwd() wants 2 args])
- ],[
- AC_MSG_RESULT(no)
- ])
-])
-
-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);
- ],[
- AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_2ARGS_VFS_UNLINK, 1,
- [vfs_unlink() wants 2 args])
- ],[
- AC_MSG_RESULT(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);
- ],[
- AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_4ARGS_VFS_RENAME, 1,
- [vfs_rename() wants 4 args])
- ],[
- AC_MSG_RESULT(no)
- ])
-])
-
-dnl #
-dnl # 2.6.36 API change,
-dnl # The 'struct fs_struct->lock' was changed from a rwlock_t to
-dnl # a spinlock_t to improve the fastpath performance.
-dnl #
-AC_DEFUN([SPL_AC_FS_STRUCT_SPINLOCK], [
- AC_MSG_CHECKING([whether struct fs_struct uses spinlock_t])
- tmp_flags="$EXTRA_KCFLAGS"
- EXTRA_KCFLAGS="-Werror"
- SPL_LINUX_TRY_COMPILE([
- #include <linux/sched.h>
- #include <linux/fs_struct.h>
- ],[
- struct fs_struct fs;
- spin_lock_init(&fs.lock);
- ],[
- AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_FS_STRUCT_SPINLOCK, 1,
- [struct fs_struct uses spinlock_t])
- ],[
- AC_MSG_RESULT(no)
- ])
- EXTRA_KCFLAGS="$tmp_flags"
-])
-
-dnl #
-dnl # 2.6.29 API change,
-dnl # check whether 'struct cred' exists
-dnl #
-AC_DEFUN([SPL_AC_CRED_STRUCT], [
- AC_MSG_CHECKING([whether struct cred exists])
- SPL_LINUX_TRY_COMPILE([
- #include <linux/cred.h>
- ],[
- struct cred *cr __attribute__ ((unused));
- cr = NULL;
- ],[
- AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_CRED_STRUCT, 1, [struct cred exists])
- ],[
- AC_MSG_RESULT(no)
- ])
-])
-
-dnl #
-dnl # Custom SPL patch may export this symbol.
-dnl #
-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],
- [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 #
-dnl # 2.6.32 API change,
-dnl # Unused 'struct file *' removed from prototype.
-dnl #
-AC_DEFUN([SPL_AC_5ARGS_PROC_HANDLER], [
- AC_MSG_CHECKING([whether proc_handler() wants 5 args])
- SPL_LINUX_TRY_COMPILE([
- #include <linux/sysctl.h>
- ],[
- proc_dostring(NULL, 0, NULL, NULL, NULL);
- ],[
- AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_5ARGS_PROC_HANDLER, 1,
- [proc_handler() wants 5 args])
- ],[
- AC_MSG_RESULT(no)
- ])
-])
-
-dnl #
-dnl # 2.6.x API change,
-dnl # kvasprintf() function added.
-dnl #
-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],
- [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 #
-dnl # 2.6.35 API change,
-dnl # Unused 'struct dentry *' removed from vfs_fsync() prototype.
-dnl #
-AC_DEFUN([SPL_AC_2ARGS_VFS_FSYNC], [
- AC_MSG_CHECKING([whether vfs_fsync() wants 2 args])
- SPL_LINUX_TRY_COMPILE([
- #include <linux/fs.h>
- ],[
- vfs_fsync(NULL, 0);
- ],[
- AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_2ARGS_VFS_FSYNC, 1, [vfs_fsync() wants 2 args])
- ],[
- AC_MSG_RESULT(no)
- ])
-])
-
-dnl #
-dnl # 3.5 API change,
-dnl # inode_operations.truncate_range removed
-dnl #
-AC_DEFUN([SPL_AC_INODE_TRUNCATE_RANGE], [
- AC_MSG_CHECKING([whether truncate_range() inode operation is available])
- SPL_LINUX_TRY_COMPILE([
- #include <linux/fs.h>
- ],[
- struct inode_operations ops;
- ops.truncate_range = NULL;
- ],[
- AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_INODE_TRUNCATE_RANGE, 1,
- [truncate_range() inode operation is available])
- ],[
- AC_MSG_RESULT(no)
- ])
-])
-
-dnl #
-dnl # Linux 2.6.38 - 3.x API
-dnl #
-AC_DEFUN([SPL_AC_KERNEL_FILE_FALLOCATE], [
- AC_MSG_CHECKING([whether fops->fallocate() exists])
- SPL_LINUX_TRY_COMPILE([
- #include <linux/fs.h>
- ],[
- long (*fallocate) (struct file *, int, loff_t, loff_t) = NULL;
- struct file_operations fops __attribute__ ((unused)) = {
- .fallocate = fallocate,
- };
- ],[
- AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_FILE_FALLOCATE, 1, [fops->fallocate() exists])
- ],[
- AC_MSG_RESULT(no)
- ])
-])
-
-dnl #
-dnl # Linux 2.6.x - 2.6.37 API
-dnl #
-AC_DEFUN([SPL_AC_KERNEL_INODE_FALLOCATE], [
- AC_MSG_CHECKING([whether iops->fallocate() exists])
- SPL_LINUX_TRY_COMPILE([
- #include <linux/fs.h>
- ],[
- long (*fallocate) (struct inode *, int, loff_t, loff_t) = NULL;
- struct inode_operations fops __attribute__ ((unused)) = {
- .fallocate = fallocate,
- };
- ],[
- AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_INODE_FALLOCATE, 1, [fops->fallocate() exists])
- ],[
- AC_MSG_RESULT(no)
- ])
-])
-
-dnl #
-dnl # PaX Linux 2.6.38 - 3.x API
-dnl #
-AC_DEFUN([SPL_AC_PAX_KERNEL_FILE_FALLOCATE], [
- AC_MSG_CHECKING([whether fops->fallocate() exists])
- SPL_LINUX_TRY_COMPILE([
- #include <linux/fs.h>
- ],[
- long (*fallocate) (struct file *, int, loff_t, loff_t) = NULL;
- struct file_operations_no_const fops __attribute__ ((unused)) = {
- .fallocate = fallocate,
- };
- ],[
- AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_FILE_FALLOCATE, 1, [fops->fallocate() exists])
- ],[
- AC_MSG_RESULT(no)
- ])
-])
-
-dnl #
-dnl # The fallocate callback was moved from the inode_operations
-dnl # structure to the file_operations structure.
-dnl #
-AC_DEFUN([SPL_AC_KERNEL_FALLOCATE], [
- SPL_AC_KERNEL_FILE_FALLOCATE
- SPL_AC_KERNEL_INODE_FALLOCATE
- SPL_AC_PAX_KERNEL_FILE_FALLOCATE
-])
-
-dnl #
-dnl # 2.6.33 API change. Also backported in RHEL5 as of 2.6.18-190.el5.
-dnl # Earlier versions of rwsem_is_locked() were inline and had a race
-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],
- [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 #
-dnl # 2.6.xx API compat,
-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],
- [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 #
-dnl # 2.6.xx API compat,
-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],
- [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 #
-dnl # 2.6.39 API compat,
-dnl # The path_lookup() function has been renamed to kern_path_parent()
-dnl # and the flags argument has been removed. The only behavior now
-dnl # offered is that of LOOKUP_PARENT. The spl already always passed
-dnl # this flag so dropping the flag does not impact us.
-dnl #
-AC_DEFUN([SPL_AC_KERN_PATH_PARENT_HEADER], [
- SPL_CHECK_SYMBOL_HEADER(
- [kern_path_parent],
- [int kern_path_parent(const char \*, struct nameidata \*)],
- [include/linux/namei.h],
- [AC_DEFINE(HAVE_KERN_PATH_PARENT_HEADER, 1,
- [kern_path_parent() is available])],
- [])
-])
-
-dnl #
-dnl # 3.1 API compat,
-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],
- [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 #
-dnl # 3.6 API compat,
-dnl # The kern_path_parent() function was replaced by the kern_path_locked()
-dnl # function to eliminate all struct nameidata usage outside fs/namei.c.
-dnl #
-AC_DEFUN([SPL_AC_KERN_PATH_LOCKED], [
- SPL_CHECK_SYMBOL_HEADER(
- [kern_path_locked],
- [struct dentry \*kern_path_locked(const char \*, struct path \*)],
- [include/linux/namei.h],
- [AC_DEFINE(HAVE_KERN_PATH_LOCKED, 1,
- [kern_path_locked() is available])],
- [])
-])
-
-dnl #
-dnl # /proc/kallsyms support,
-dnl # Verify the kernel has CONFIG_KALLSYMS support enabled.
-dnl #
-AC_DEFUN([SPL_AC_CONFIG_KALLSYMS], [
- AC_MSG_CHECKING([whether CONFIG_KALLSYMS is defined])
- SPL_LINUX_TRY_COMPILE([
- #if !defined(CONFIG_KALLSYMS)
- #error CONFIG_KALLSYMS not defined
- #endif
- ],[ ],[
- AC_MSG_RESULT([yes])
- ],[
- AC_MSG_RESULT([no])
- AC_MSG_ERROR([
- *** This kernel does not include the required kallsyms support.
- *** Rebuild the kernel with CONFIG_KALLSYMS=y set.])
- ])
-])
-
-dnl #
-dnl # zlib inflate compat,
-dnl # Verify the kernel has CONFIG_ZLIB_INFLATE support enabled.
-dnl #
-AC_DEFUN([SPL_AC_CONFIG_ZLIB_INFLATE], [
- AC_MSG_CHECKING([whether CONFIG_ZLIB_INFLATE is defined])
- SPL_LINUX_TRY_COMPILE([
- #if !defined(CONFIG_ZLIB_INFLATE) && \
- !defined(CONFIG_ZLIB_INFLATE_MODULE)
- #error CONFIG_ZLIB_INFLATE not defined
- #endif
- ],[ ],[
- AC_MSG_RESULT([yes])
- ],[
- AC_MSG_RESULT([no])
- AC_MSG_ERROR([
- *** This kernel does not include the required zlib inflate support.
- *** Rebuild the kernel with CONFIG_ZLIB_INFLATE=y|m set.])
- ])
-])
-
-dnl #
-dnl # zlib deflate compat,
-dnl # Verify the kernel has CONFIG_ZLIB_DEFLATE support enabled.
-dnl #
-AC_DEFUN([SPL_AC_CONFIG_ZLIB_DEFLATE], [
- AC_MSG_CHECKING([whether CONFIG_ZLIB_DEFLATE is defined])
- SPL_LINUX_TRY_COMPILE([
- #if !defined(CONFIG_ZLIB_DEFLATE) && \
- !defined(CONFIG_ZLIB_DEFLATE_MODULE)
- #error CONFIG_ZLIB_DEFLATE not defined
- #endif
- ],[ ],[
- AC_MSG_RESULT([yes])
- ],[
- AC_MSG_RESULT([no])
- AC_MSG_ERROR([
- *** This kernel does not include the required zlib deflate support.
- *** Rebuild the kernel with CONFIG_ZLIB_DEFLATE=y|m set.])
- ])
-])
-
-dnl #
-dnl # 2.6.39 API compat,
-dnl # The function zlib_deflate_workspacesize() now take 2 arguments.
-dnl # This was done to avoid always having to allocate the maximum size
-dnl # workspace (268K). The caller can now specific the windowBits and
-dnl # memLevel compression parameters to get a smaller workspace.
-dnl #
-AC_DEFUN([SPL_AC_2ARGS_ZLIB_DEFLATE_WORKSPACESIZE],
- [AC_MSG_CHECKING([whether zlib_deflate_workspacesize() wants 2 args])
- SPL_LINUX_TRY_COMPILE([
- #include <linux/zlib.h>
- ],[
- return zlib_deflate_workspacesize(MAX_WBITS, MAX_MEM_LEVEL);
- ],[
- AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_2ARGS_ZLIB_DEFLATE_WORKSPACESIZE, 1,
- [zlib_deflate_workspacesize() wants 2 args])
- ],[
- AC_MSG_RESULT(no)
- ])
-])
-
-dnl #
-dnl # 2.6.39 API change,
-dnl # Shrinker adjust to use common shrink_control structure.
-dnl #
-AC_DEFUN([SPL_AC_SHRINK_CONTROL_STRUCT], [
- AC_MSG_CHECKING([whether struct shrink_control exists])
- SPL_LINUX_TRY_COMPILE([
- #include <linux/mm.h>
- ],[
- struct shrink_control sc __attribute__ ((unused));
-
- sc.nr_to_scan = 0;
- sc.gfp_mask = GFP_KERNEL;
- ],[
- AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_SHRINK_CONTROL_STRUCT, 1,
- [struct shrink_control exists])
- ],[
- AC_MSG_RESULT(no)
- ])
-])
-
-dnl #
-dnl # 3.1 API Change
-dnl #
-dnl # The rw_semaphore.wait_lock member was changed from spinlock_t to
-dnl # raw_spinlock_t at commit ddb6c9b58a19edcfac93ac670b066c836ff729f1.
-dnl #
-AC_DEFUN([SPL_AC_RWSEM_SPINLOCK_IS_RAW], [
- AC_MSG_CHECKING([whether struct rw_semaphore member wait_lock is raw])
- tmp_flags="$EXTRA_KCFLAGS"
- EXTRA_KCFLAGS="-Werror"
- SPL_LINUX_TRY_COMPILE([
- #include <linux/rwsem.h>
- ],[
- struct rw_semaphore dummy_semaphore __attribute__ ((unused));
- raw_spinlock_t dummy_lock __attribute__ ((unused));
- dummy_semaphore.wait_lock = dummy_lock;
- ],[
- AC_MSG_RESULT(yes)
- AC_DEFINE(RWSEM_SPINLOCK_IS_RAW, 1,
- [struct rw_semaphore member wait_lock is raw_spinlock_t])
+ AC_DEFINE(HAVE_INODE_LOCK_SHARED, 1, [yes])
],[
AC_MSG_RESULT(no)
])
projects / mirror_spl.git / blobdiff