-dnl #
-dnl # Default SPL kernel configuration
-dnl #
+###############################################################################
+# Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
+# Copyright (C) 2007 The Regents of the University of California.
+# Written by Brian Behlendorf <behlendorf1@llnl.gov>.
+###############################################################################
+# SPL_AC_CONFIG_KERNEL: Default SPL kernel configuration.
+###############################################################################
+
AC_DEFUN([SPL_AC_CONFIG_KERNEL], [
SPL_AC_KERNEL
- dnl # Kernel build make options
- dnl # KERNELMAKE_PARAMS="V=1" # Enable verbose module build
- KERNELMAKE_PARAMS="V=1"
-
- dnl # -Wall -fno-strict-aliasing -Wstrict-prototypes and other
- dnl # compiler options are added by the kernel build system.
- abs_srcdir=`readlink -f ${srcdir}`
- KERNELCPPFLAGS="$KERNELCPPFLAGS -Wstrict-prototypes -Werror"
- KERNELCPPFLAGS="$KERNELCPPFLAGS -I${abs_srcdir} -I${abs_srcdir}/include"
-
if test "${LINUX_OBJ}" != "${LINUX}"; then
KERNELMAKE_PARAMS="$KERNELMAKE_PARAMS O=$LINUX_OBJ"
fi
-
AC_SUBST(KERNELMAKE_PARAMS)
+
+ KERNELCPPFLAGS="$KERNELCPPFLAGS -Wstrict-prototypes"
AC_SUBST(KERNELCPPFLAGS)
SPL_AC_DEBUG
+ SPL_AC_DEBUG_LOG
SPL_AC_DEBUG_KMEM
- SPL_AC_DEBUG_MUTEX
- SPL_AC_DEBUG_KSTAT
- SPL_AC_DEBUG_CALLB
+ 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_TYPE_ATOMIC64_T
- SPL_AC_3ARGS_INIT_WORK
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_CTL_NAME
+ SPL_AC_VMALLOC_INFO
+ SPL_AC_PDE_DATA
SPL_AC_FLS64
SPL_AC_DEVICE_CREATE
SPL_AC_5ARGS_DEVICE_CREATE
SPL_AC_SET_NORMALIZED_TIMESPEC_INLINE
SPL_AC_TIMESPEC_SUB
SPL_AC_INIT_UTSNAME
- SPL_AC_FDTABLE_HEADER
- SPL_AC_FILES_FDTABLE
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_DIV64_64
- SPL_AC_DIV64_U64
SPL_AC_3ARGS_ON_EACH_CPU
SPL_AC_KALLSYMS_LOOKUP_NAME
SPL_AC_GET_VMALLOC_INFO
SPL_AC_NEXT_ONLINE_PGDAT
SPL_AC_NEXT_ZONE
SPL_AC_PGDAT_LIST
- SPL_AC_GET_ZONE_COUNTS
SPL_AC_GLOBAL_PAGE_STATE
- SPL_AC_ZONE_STAT_ITEM_FIA
+ 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_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_KUIDGID_T
+ SPL_AC_GROUPS_SEARCH
+ 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_SCHED_RT_HEADER
+ SPL_AC_2ARGS_VFS_GETATTR
])
AC_DEFUN([SPL_AC_MODULE_SYMVERS], [
modpost=$LINUX/scripts/Makefile.modpost
AC_MSG_CHECKING([kernel file name for module symbols])
- if test -f "$modpost"; then
+ if test "x$enable_linux_builtin" != xyes -a -f "$modpost"; then
if grep -q Modules.symvers $modpost; then
LINUX_SYMBOLS=Modules.symvers
else
LINUX_SYMBOLS=Module.symvers
fi
+
+ if ! test -f "$LINUX_OBJ/$LINUX_SYMBOLS"; then
+ AC_MSG_ERROR([
+ *** Please make sure the kernel devel package for your distribution
+ *** is installed. If you are building with a custom kernel, make sure the
+ *** kernel is configured, built, and the '--with-linux=PATH' configure
+ *** option refers to the location of the kernel source.])
+ fi
else
LINUX_SYMBOLS=NONE
fi
AC_MSG_CHECKING([kernel source directory])
if test -z "$kernelsrc"; then
- sourcelink=`ls -1d /usr/src/kernels/* /usr/src/linux-* \
- 2>/dev/null | grep -v obj | tail -1`
+ if test -e "/lib/modules/$(uname -r)/source"; then
+ headersdir="/lib/modules/$(uname -r)/source"
+ sourcelink=$(readlink -f "$headersdir")
+ elif test -e "/lib/modules/$(uname -r)/build"; then
+ headersdir="/lib/modules/$(uname -r)/build"
+ sourcelink=$(readlink -f "$headersdir")
+ else
+ sourcelink=$(ls -1d /usr/src/kernels/* \
+ /usr/src/linux-* \
+ 2>/dev/null | grep -v obj | tail -1)
+ fi
- if test -e ${sourcelink}; then
+ if test -n "$sourcelink" && test -e ${sourcelink}; then
kernelsrc=`readlink -f ${sourcelink}`
else
- AC_MSG_RESULT([Not found])
- AC_MSG_ERROR([
- *** Please specify the location of the kernel source
- *** with the '--with-linux=PATH' option])
+ kernelsrc="[Not found]"
fi
else
if test "$kernelsrc" = "NONE"; then
fi
AC_MSG_RESULT([$kernelsrc])
+ if test ! -d "$kernelsrc"; then
+ AC_MSG_ERROR([
+ *** Please make sure the kernel devel package for your distribution
+ *** 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
+
AC_MSG_CHECKING([kernel build directory])
if test -z "$kernelbuild"; then
- if test -d ${kernelsrc}-obj/`arch`/`arch`; then
- kernelbuild=${kernelsrc}-obj/`arch`/`arch`
- elif test -d ${kernelsrc}-obj/`arch`/default; then
- kernelbuild=${kernelsrc}-obj/`arch`/default
- elif test -d `dirname ${kernelsrc}`/build-`arch`; then
- kernelbuild=`dirname ${kernelsrc}`/build-`arch`
+ if test -e "/lib/modules/$(uname -r)/build"; then
+ kernelbuild=`readlink -f /lib/modules/$(uname -r)/build`
+ elif test -d ${kernelsrc}-obj/${target_cpu}/${target_cpu}; then
+ kernelbuild=${kernelsrc}-obj/${target_cpu}/${target_cpu}
+ elif test -d ${kernelsrc}-obj/${target_cpu}/default; then
+ kernelbuild=${kernelsrc}-obj/${target_cpu}/default
+ elif test -d `dirname ${kernelsrc}`/build-${target_cpu}; then
+ kernelbuild=`dirname ${kernelsrc}`/build-${target_cpu}
else
kernelbuild=${kernelsrc}
fi
AC_MSG_RESULT([$kernelbuild])
AC_MSG_CHECKING([kernel source version])
- if test -r $kernelbuild/include/linux/version.h &&
- fgrep -q UTS_RELEASE $kernelbuild/include/linux/version.h; then
-
- kernsrcver=`(echo "#include <linux/version.h>";
- echo "kernsrcver=UTS_RELEASE") |
- cpp -I $kernelbuild/include |
- grep "^kernsrcver=" | cut -d \" -f 2`
-
- elif test -r $kernelbuild/include/linux/utsrelease.h &&
- fgrep -q UTS_RELEASE $kernelbuild/include/linux/utsrelease.h; then
+ utsrelease1=$kernelbuild/include/linux/version.h
+ utsrelease2=$kernelbuild/include/linux/utsrelease.h
+ utsrelease3=$kernelbuild/include/generated/utsrelease.h
+ if test -r $utsrelease1 && fgrep -q UTS_RELEASE $utsrelease1; then
+ utsrelease=linux/version.h
+ elif test -r $utsrelease2 && fgrep -q UTS_RELEASE $utsrelease2; then
+ utsrelease=linux/utsrelease.h
+ elif test -r $utsrelease3 && fgrep -q UTS_RELEASE $utsrelease3; then
+ utsrelease=generated/utsrelease.h
+ fi
- kernsrcver=`(echo "#include <linux/utsrelease.h>";
+ if test "$utsrelease"; then
+ kernsrcver=`(echo "#include <$utsrelease>";
echo "kernsrcver=UTS_RELEASE") |
cpp -I $kernelbuild/include |
grep "^kernsrcver=" | cut -d \" -f 2`
- fi
- if test -z "$kernsrcver"; then
+ if test -z "$kernsrcver"; then
+ AC_MSG_RESULT([Not found])
+ AC_MSG_ERROR([*** Cannot determine kernel version.])
+ fi
+ else
AC_MSG_RESULT([Not found])
- AC_MSG_ERROR([
- *** Cannot determine the version of the linux kernel source.
- *** Please prepare the kernel before running this script])
+ if test "x$enable_linux_builtin" != xyes; then
+ AC_MSG_ERROR([*** Cannot find UTS_RELEASE definition.])
+ else
+ AC_MSG_ERROR([
+ *** Cannot find UTS_RELEASE definition.
+ *** Please run 'make prepare' inside the kernel source tree.])
+ fi
fi
AC_MSG_RESULT([$kernsrcver])
dnl #
AC_DEFUN([SPL_AC_CONFIG_USER], [])
+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 # 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_CHECKING([whether $RPM is available])
+ AS_IF([tmp=$($RPM --version 2>/dev/null)], [
+ RPM_VERSION=$(echo $tmp | $AWK '/RPM/ { print $[3] }')
+ HAVE_RPM=yes
+ AC_MSG_RESULT([$HAVE_RPM ($RPM_VERSION)])
+ ],[
+ HAVE_RPM=no
+ AC_MSG_RESULT([$HAVE_RPM])
+ ])
+
+ AC_MSG_CHECKING([whether $RPMBUILD is available])
+ AS_IF([tmp=$($RPMBUILD --version 2>/dev/null)], [
+ RPMBUILD_VERSION=$(echo $tmp | $AWK '/RPM/ { print $[3] }')
+ HAVE_RPMBUILD=yes
+ AC_MSG_RESULT([$HAVE_RPMBUILD ($RPMBUILD_VERSION)])
+ ],[
+ HAVE_RPMBUILD=no
+ AC_MSG_RESULT([$HAVE_RPMBUILD])
+ ])
+
+ RPM_DEFINE_COMMON='--define "$(DEBUG_SPL) 1" --define "$(DEBUG_LOG) 1" --define "$(DEBUG_KMEM) 1" --define "$(DEBUG_KMEM_TRACKING) 1"'
+ RPM_DEFINE_UTIL=
+ RPM_DEFINE_KMOD='--define "kernels $(LINUX_VERSION)"'
+ RPM_DEFINE_DKMS=
+
+ SRPM_DEFINE_COMMON='--define "build_src_rpm 1"'
+ SRPM_DEFINE_UTIL=
+ SRPM_DEFINE_KMOD=
+ SRPM_DEFINE_DKMS=
+
+ RPM_SPEC_DIR="rpm/generic"
+ AC_ARG_WITH([spec],
+ AS_HELP_STRING([--with-spec=SPEC],
+ [Spec files 'generic|fedora']),
+ [RPM_SPEC_DIR="rpm/$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 #
+dnl # Check for dpkg+dpkg-buildpackage to build DEB packages. If these
+dnl # tools are missing it is non-fatal but you will not be able to build
+dnl # DEB packages and will be warned if you try too.
+dnl #
+AC_DEFUN([SPL_AC_DPKG], [
+ DPKG=dpkg
+ DPKGBUILD=dpkg-buildpackage
+
+ AC_MSG_CHECKING([whether $DPKG is available])
+ AS_IF([tmp=$($DPKG --version 2>/dev/null)], [
+ DPKG_VERSION=$(echo $tmp | $AWK '/Debian/ { print $[7] }')
+ HAVE_DPKG=yes
+ AC_MSG_RESULT([$HAVE_DPKG ($DPKG_VERSION)])
+ ],[
+ HAVE_DPKG=no
+ AC_MSG_RESULT([$HAVE_DPKG])
+ ])
+
+ AC_MSG_CHECKING([whether $DPKGBUILD is available])
+ AS_IF([tmp=$($DPKGBUILD --version 2>/dev/null)], [
+ DPKGBUILD_VERSION=$(echo $tmp | \
+ $AWK '/Debian/ { print $[4] }' | cut -f-4 -d'.')
+ HAVE_DPKGBUILD=yes
+ AC_MSG_RESULT([$HAVE_DPKGBUILD ($DPKGBUILD_VERSION)])
+ ],[
+ HAVE_DPKGBUILD=no
+ AC_MSG_RESULT([$HAVE_DPKGBUILD])
+ ])
+
+ AC_SUBST(HAVE_DPKG)
+ AC_SUBST(DPKG)
+ AC_SUBST(DPKG_VERSION)
+
+ AC_SUBST(HAVE_DPKGBUILD)
+ AC_SUBST(DPKGBUILD)
+ AC_SUBST(DPKGBUILD_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
+dnl # convert the RPM packages to the needed package type. This is
+dnl # a hack but so far it has worked reasonable well.
+dnl #
+AC_DEFUN([SPL_AC_ALIEN], [
+ ALIEN=alien
+
+ AC_MSG_CHECKING([whether $ALIEN is available])
+ AS_IF([tmp=$($ALIEN --version 2>/dev/null)], [
+ ALIEN_VERSION=$(echo $tmp | $AWK '{ print $[3] }')
+ HAVE_ALIEN=yes
+ AC_MSG_RESULT([$HAVE_ALIEN ($ALIEN_VERSION)])
+ ],[
+ HAVE_ALIEN=no
+ AC_MSG_RESULT([$HAVE_ALIEN])
+ ])
+
+ AC_SUBST(HAVE_ALIEN)
+ AC_SUBST(ALIEN)
+ AC_SUBST(ALIEN_VERSION)
+])
+
+dnl #
+dnl # Using the VENDOR tag from config.guess set the default
+dnl # package type for 'make pkg': (rpm | deb | tgz)
+dnl #
+AC_DEFUN([SPL_AC_DEFAULT_PACKAGE], [
+ AC_MSG_CHECKING([linux distribution])
+ if test -f /etc/toss-release ; then
+ VENDOR=toss ;
+ elif test -f /etc/fedora-release ; then
+ VENDOR=fedora ;
+ elif test -f /etc/redhat-release ; then
+ VENDOR=redhat ;
+ elif test -f /etc/gentoo-release ; then
+ VENDOR=gentoo ;
+ elif test -f /etc/arch-release ; then
+ VENDOR=arch ;
+ elif test -f /etc/SuSE-release ; then
+ VENDOR=sles ;
+ elif test -f /etc/slackware-version ; then
+ VENDOR=slackware ;
+ elif test -f /etc/lunar.release ; then
+ VENDOR=lunar ;
+ elif test -f /etc/lsb-release ; then
+ VENDOR=ubuntu ;
+ elif test -f /etc/debian_version ; then
+ VENDOR=debian ;
+ else
+ VENDOR= ;
+ fi
+ AC_MSG_RESULT([$VENDOR])
+ AC_SUBST(VENDOR)
+
+ AC_MSG_CHECKING([default package type])
+ case "$VENDOR" in
+ toss) DEFAULT_PACKAGE=rpm ;;
+ redhat) DEFAULT_PACKAGE=rpm ;;
+ fedora) DEFAULT_PACKAGE=rpm ;;
+ gentoo) DEFAULT_PACKAGE=tgz ;;
+ arch) DEFAULT_PACKAGE=tgz ;;
+ sles) DEFAULT_PACKAGE=rpm ;;
+ slackware) DEFAULT_PACKAGE=tgz ;;
+ lunar) DEFAULT_PACKAGE=tgz ;;
+ ubuntu) DEFAULT_PACKAGE=deb ;;
+ debian) DEFAULT_PACKAGE=deb ;;
+ *) DEFAULT_PACKAGE=rpm ;;
+ esac
+
+ AC_MSG_RESULT([$DEFAULT_PACKAGE])
+ AC_SUBST(DEFAULT_PACKAGE)
+])
+
+dnl #
+dnl # Default SPL user configuration
+dnl #
+AC_DEFUN([SPL_AC_PACKAGE], [
+ SPL_AC_DEFAULT_PACKAGE
+ SPL_AC_RPM
+ SPL_AC_DPKG
+ SPL_AC_ALIEN
+])
+
AC_DEFUN([SPL_AC_LICENSE], [
AC_MSG_CHECKING([spl license])
LICENSE=GPL
])
AC_DEFUN([SPL_AC_CONFIG], [
- SPL_CONFIG=all
- AC_ARG_WITH([config],
- AS_HELP_STRING([--with-config=CONFIG],
- [Config file 'kernel|user|all']),
- [SPL_CONFIG="$withval"])
-
- AC_MSG_CHECKING([spl config])
- AC_MSG_RESULT([$SPL_CONFIG]);
- AC_SUBST(SPL_CONFIG)
-
- case "$SPL_CONFIG" in
- kernel) SPL_AC_CONFIG_KERNEL ;;
- user) SPL_AC_CONFIG_USER ;;
- all) SPL_AC_CONFIG_KERNEL
- SPL_AC_CONFIG_USER ;;
- *)
- AC_MSG_RESULT([Error!])
- AC_MSG_ERROR([Bad value "$SPL_CONFIG" for --with-config,
- user kernel|user|all]) ;;
- esac
-
- AM_CONDITIONAL([CONFIG_USER],
- [test "$SPL_CONFIG" = user] ||
- [test "$SPL_CONFIG" = all])
- AM_CONDITIONAL([CONFIG_KERNEL],
- [test "$SPL_CONFIG" = kernel] ||
- [test "$SPL_CONFIG" = all])
+ SPL_CONFIG=all
+ AC_ARG_WITH([config],
+ AS_HELP_STRING([--with-config=CONFIG],
+ [Config file 'kernel|user|all|srpm']),
+ [SPL_CONFIG="$withval"])
+ AC_ARG_ENABLE([linux-builtin],
+ [AC_HELP_STRING([--enable-linux-builtin],
+ [Configure for builtin in-tree kernel modules @<:@default=no@:>@])],
+ [],
+ [enable_linux_builtin=no])
+
+ AC_MSG_CHECKING([spl config])
+ AC_MSG_RESULT([$SPL_CONFIG]);
+ AC_SUBST(SPL_CONFIG)
+
+ case "$SPL_CONFIG" in
+ kernel) SPL_AC_CONFIG_KERNEL ;;
+ user) SPL_AC_CONFIG_USER ;;
+ all) SPL_AC_CONFIG_KERNEL
+ SPL_AC_CONFIG_USER ;;
+ srpm) ;;
+ *)
+ AC_MSG_RESULT([Error!])
+ AC_MSG_ERROR([Bad value "$SPL_CONFIG" for --with-config,
+ user kernel|user|all|srpm]) ;;
+ esac
+
+ AM_CONDITIONAL([CONFIG_USER],
+ [test "$SPL_CONFIG" = user -o "$SPL_CONFIG" = all])
+ AM_CONDITIONAL([CONFIG_KERNEL],
+ [test "$SPL_CONFIG" = kernel -o "$SPL_CONFIG" = all] &&
+ [test "x$enable_linux_builtin" != xyes ])
])
+dnl #
+dnl # Enable if the SPL should be compiled with internal debugging enabled.
+dnl # By default this support is disabled.
+dnl #
AC_DEFUN([SPL_AC_DEBUG], [
AC_MSG_CHECKING([whether debugging is enabled])
- AC_ARG_ENABLE( [debug],
- AS_HELP_STRING([--enable-debug],
- [Enable generic debug support (default off)]),
- [ case "$enableval" in
- yes) spl_ac_debug=yes ;;
- no) spl_ac_debug=no ;;
- *) AC_MSG_RESULT([Error!])
- AC_MSG_ERROR([Bad value "$enableval" for --enable-debug]) ;;
- esac ]
- )
- if test "$spl_ac_debug" = yes; then
- AC_MSG_RESULT([yes])
- KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG"
- else
- AC_MSG_RESULT([no])
+ AC_ARG_ENABLE([debug],
+ [AS_HELP_STRING([--enable-debug],
+ [Enable generic debug support @<:@default=no@:>@])],
+ [],
+ [enable_debug=no])
+
+ AS_IF([test "x$enable_debug" = xyes],
+ [
+ KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG -Werror"
+ DEBUG_CFLAGS="-DDEBUG -Werror"
+ DEBUG_SPL="_with_debug"
+ ], [
KERNELCPPFLAGS="${KERNELCPPFLAGS} -DNDEBUG"
- fi
+ DEBUG_CFLAGS="-DNDEBUG"
+ DEBUG_SPL="_without_debug"
+ ])
+
+ AC_SUBST(DEBUG_CFLAGS)
+ AC_SUBST(DEBUG_SPL)
+ AC_MSG_RESULT([$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([$enable_debug_log])
])
+dnl #
+dnl # Enabled by default it provides a minimal level of memory tracking.
+dnl # A total count of bytes allocated is kept for each alloc and free.
+dnl # Then at module unload time a report to the console will be printed
+dnl # if memory was leaked. Additionally, /proc/spl/kmem/slab will exist
+dnl # and provide an easy way to inspect the kmem based slab.
+dnl #
AC_DEFUN([SPL_AC_DEBUG_KMEM], [
- AC_MSG_CHECKING([whether kmem debugging is enabled])
- AC_ARG_ENABLE( [debug-kmem],
- AS_HELP_STRING([--enable-debug-kmem],
- [Enable kmem debug support (default off)]),
- [ case "$enableval" in
- yes) spl_ac_debug_kmem=yes ;;
- no) spl_ac_debug_kmem=no ;;
- *) AC_MSG_RESULT([Error!])
- AC_MSG_ERROR([Bad value "$enableval" for --enable-debug-kmem]) ;;
- esac ]
- )
- if test "$spl_ac_debug_kmem" = yes; then
- AC_MSG_RESULT([yes])
- AC_DEFINE([DEBUG_KMEM], [1],
- [Define to 1 to enable kmem debugging])
+ AC_ARG_ENABLE([debug-kmem],
+ [AS_HELP_STRING([--enable-debug-kmem],
+ [Enable basic kmem accounting @<:@default=yes@:>@])],
+ [],
+ [enable_debug_kmem=yes])
+
+ AS_IF([test "x$enable_debug_kmem" = xyes],
+ [
KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG_KMEM"
- else
- AC_MSG_RESULT([no])
- fi
-])
+ DEBUG_KMEM="_with_debug_kmem"
+ AC_DEFINE([DEBUG_KMEM], [1],
+ [Define to 1 to enable basic kmem accounting])
+ ], [
+ DEBUG_KMEM="_without_debug_kmem"
+ ])
-AC_DEFUN([SPL_AC_DEBUG_MUTEX], [
- AC_MSG_CHECKING([whether mutex debugging is enabled])
- AC_ARG_ENABLE( [debug-mutex],
- AS_HELP_STRING([--enable-debug-mutex],
- [Enable mutex debug support (default off)]),
- [ case "$enableval" in
- yes) spl_ac_debug_mutex=yes ;;
- no) spl_ac_debug_mutex=no ;;
- *) AC_MSG_RESULT([Error!])
- AC_MSG_ERROR([Bad value "$enableval" for --enable-debug-mutex]) ;;
- esac ]
- )
- if test "$spl_ac_debug_mutex" = yes; then
- AC_MSG_RESULT([yes])
- AC_DEFINE([DEBUG_MUTEX], [1],
- [Define to 1 to enable mutex debugging])
- KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG_MUTEX"
- else
- AC_MSG_RESULT([no])
- fi
+ AC_SUBST(DEBUG_KMEM)
+ AC_MSG_CHECKING([whether basic kmem accounting is enabled])
+ AC_MSG_RESULT([$enable_debug_kmem])
])
-AC_DEFUN([SPL_AC_DEBUG_KSTAT], [
- AC_MSG_CHECKING([whether kstat debugging is enabled])
- AC_ARG_ENABLE( [debug-kstat],
- AS_HELP_STRING([--enable-debug-kstat],
- [Enable kstat debug support (default off)]),
- [ case "$enableval" in
- yes) spl_ac_debug_kstat=yes ;;
- no) spl_ac_debug_kstat=no ;;
- *) AC_MSG_RESULT([Error!])
- AC_MSG_ERROR([Bad value "$enableval" for --enable-debug-kstat]) ;;
- esac ]
- )
- if test "$spl_ac_debug_kstat" = yes; then
- AC_MSG_RESULT([yes])
- AC_DEFINE([DEBUG_KSTAT], [1],
- [Define to 1 to enable kstat debugging])
- KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG_KSTAT"
- else
- AC_MSG_RESULT([no])
- fi
-])
+dnl #
+dnl # Disabled by default it provides detailed memory tracking. This
+dnl # feature also requires --enable-debug-kmem to be set. When enabled
+dnl # not only will total bytes be tracked but also the location of every
+dnl # alloc and free. When the SPL module is unloaded a list of all leaked
+dnl # addresses and where they were allocated will be dumped to the console.
+dnl # Enabling this feature has a significant impact on performance but it
+dnl # makes finding memory leaks pretty straight forward.
+dnl #
+AC_DEFUN([SPL_AC_DEBUG_KMEM_TRACKING], [
+ AC_ARG_ENABLE([debug-kmem-tracking],
+ [AS_HELP_STRING([--enable-debug-kmem-tracking],
+ [Enable detailed kmem tracking @<:@default=no@:>@])],
+ [],
+ [enable_debug_kmem_tracking=no])
-AC_DEFUN([SPL_AC_DEBUG_CALLB], [
- AC_MSG_CHECKING([whether callb debugging is enabled])
- AC_ARG_ENABLE( [debug-callb],
- AS_HELP_STRING([--enable-debug-callb],
- [Enable callb debug support (default off)]),
- [ case "$enableval" in
- yes) spl_ac_debug_callb=yes ;;
- no) spl_ac_debug_callb=no ;;
- *) AC_MSG_RESULT([Error!])
- AC_MSG_ERROR([Bad value "$enableval" for --enable-debug-callb]) ;;
- esac ]
- )
- if test "$spl_ac_debug_callb" = yes; then
- AC_MSG_RESULT([yes])
- AC_DEFINE([DEBUG_CALLB], [1],
- [Define to 1 to enable callb debugging])
- KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG_CALLB"
- else
- AC_MSG_RESULT([no])
- fi
+ AS_IF([test "x$enable_debug_kmem_tracking" = xyes],
+ [
+ KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG_KMEM_TRACKING"
+ DEBUG_KMEM_TRACKING="_with_debug_kmem_tracking"
+ AC_DEFINE([DEBUG_KMEM_TRACKING], [1],
+ [Define to 1 to enable detailed kmem tracking])
+ ], [
+ DEBUG_KMEM_TRACKING="_without_debug_kmem_tracking"
+ ])
+
+ AC_SUBST(DEBUG_KMEM_TRACKING)
+ AC_MSG_CHECKING([whether detailed kmem tracking is enabled])
+ AC_MSG_RESULT([$enable_debug_kmem_tracking])
])
dnl #
dnl # SPL_LINUX_CONFTEST
dnl #
AC_DEFUN([SPL_LINUX_CONFTEST], [
-cat >conftest.c <<_ACEOF
+cat confdefs.h - <<_ACEOF >conftest.c
$1
_ACEOF
])
dnl #
AC_DEFUN([SPL_LINUX_COMPILE_IFELSE], [
m4_ifvaln([$1], [SPL_LINUX_CONFTEST([$1])])
- rm -Rf build && mkdir -p build
+ rm -Rf build && mkdir -p build && touch build/conftest.mod.c
echo "obj-m := conftest.o" >build/Makefile
+ modpost_flag=''
+ test "x$enable_linux_builtin" = xyes && modpost_flag='modpost=true' # fake modpost stage
AS_IF(
- [AC_TRY_COMMAND(cp conftest.c build && make [$2] -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build) >/dev/null && AC_TRY_COMMAND([$3])],
- [$4],
- [_AC_MSG_LOG_CONFTEST m4_ifvaln([$5],[$5])]
+ [AC_TRY_COMMAND(cp conftest.c build && make [$2] -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build $modpost_flag) >/dev/null && AC_TRY_COMMAND([$3])],
+ [$4],
+ [_AC_MSG_LOG_CONFTEST m4_ifvaln([$5],[$5])]
)
rm -Rf build
])
[$3], [$4])
])
-dnl #
-dnl # SPL_LINUX_CONFIG
-dnl #
-AC_DEFUN([SPL_LINUX_CONFIG],
- [AC_MSG_CHECKING([whether Linux was built with CONFIG_$1])
- SPL_LINUX_TRY_COMPILE([
- #ifndef AUTOCONF_INCLUDED
- #include <linux/config.h>
- #endif
- ],[
- #ifndef CONFIG_$1
- #error CONFIG_$1 not #defined
- #endif
- ],[
- AC_MSG_RESULT([yes])
- $2
- ],[
- AC_MSG_RESULT([no])
- $3
- ])
-])
-
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:]]]' \
$LINUX_OBJ/Module*.symvers 2>/dev/null
rc=$?
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 :
+ $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 #
+AC_DEFUN([SPL_CHECK_SYMBOL_HEADER], [
+ AC_MSG_CHECKING([whether symbol $1 exists in header])
+ header=0
+ for file in $3; do
+ grep -q "$2" "$LINUX/$file" 2>/dev/null
+ rc=$?
+ if test $rc -eq 0; then
+ header=1
+ break;
+ fi
+ done
+ if test $header -eq 0; then
+ AC_MSG_RESULT([no])
+ $5
else
AC_MSG_RESULT([yes])
- $3
+ $4
fi
])
])
])
+dnl #
+dnl # Basic toolchain sanity check.
+dnl #
+AC_DEFUN([SPL_AC_TEST_MODULE],
+ [AC_MSG_CHECKING([whether modules can be built])
+ SPL_LINUX_TRY_COMPILE([],[],[
+ AC_MSG_RESULT([yes])
+ ],[
+ AC_MSG_RESULT([no])
+ if test "x$enable_linux_builtin" != xyes; then
+ AC_MSG_ERROR([*** Unable to build an empty module.])
+ else
+ AC_MSG_ERROR([
+ *** Unable to build an empty module.
+ *** Please run 'make scripts' inside the kernel source tree.])
+ fi
+ ])
+])
+
+dnl #
+dnl # Use the atomic implemenation based on global spinlocks. This
+dnl # should only be needed by 32-bit kernels which do not provide
+dnl # the atomic64_* API. It may be optionally enabled as a fallback
+dnl # if problems are observed with the direct mapping to the native
+dnl # Linux atomic operations. You may not disable atomic spinlocks
+dnl # if you kernel does not an atomic64_* API.
+dnl #
+AC_DEFUN([SPL_AC_ATOMIC_SPINLOCK], [
+ AC_ARG_ENABLE([atomic-spinlocks],
+ [AS_HELP_STRING([--enable-atomic-spinlocks],
+ [Atomic types use spinlocks @<:@default=check@:>@])],
+ [],
+ [enable_atomic_spinlocks=check])
+
+ SPL_LINUX_TRY_COMPILE([
+ #include <linux/fs.h>
+ ],[
+ atomic64_t *ptr __attribute__ ((unused));
+ ],[
+ have_atomic64_t=yes
+ AC_DEFINE(HAVE_ATOMIC64_T, 1,
+ [kernel defines atomic64_t])
+ ],[
+ have_atomic64_t=no
+ ])
+
+ AS_IF([test "x$enable_atomic_spinlocks" = xcheck], [
+ AS_IF([test "x$have_atomic64_t" = xyes], [
+ enable_atomic_spinlocks=no
+ ],[
+ enable_atomic_spinlocks=yes
+ ])
+ ])
+
+ AS_IF([test "x$enable_atomic_spinlocks" = xyes], [
+ AC_DEFINE([ATOMIC_SPINLOCK], [1],
+ [Atomic types use spinlocks])
+ ],[
+ AS_IF([test "x$have_atomic64_t" = xno], [
+ AC_MSG_FAILURE(
+ [--disable-atomic-spinlocks given but required atomic64 support is unavailable])
+ ])
+ ])
+
+ AC_MSG_CHECKING([whether atomic types use spinlocks])
+ AC_MSG_RESULT([$enable_atomic_spinlocks])
+
+ AC_MSG_CHECKING([whether kernel defines atomic64_t])
+ AC_MSG_RESULT([$have_atomic64_t])
+])
+
dnl #
dnl # 2.6.24 API change,
-dnl # check if uintptr_t typedef is defined
+dnl # check if atomic64_cmpxchg is defined
dnl #
-AC_DEFUN([SPL_AC_TYPE_UINTPTR_T],
- [AC_MSG_CHECKING([whether kernel defines uintptr_t])
+AC_DEFUN([SPL_AC_TYPE_ATOMIC64_CMPXCHG],
+ [AC_MSG_CHECKING([whether kernel defines atomic64_cmpxchg])
SPL_LINUX_TRY_COMPILE([
- #include <linux/types.h>
+ #include <linux/fs.h>
],[
- uintptr_t *ptr;
+ atomic64_cmpxchg((atomic64_t *)NULL, 0, 0);
],[
AC_MSG_RESULT([yes])
- AC_DEFINE(HAVE_UINTPTR_T, 1,
- [kernel defines uintptr_t])
+ AC_DEFINE(HAVE_ATOMIC64_CMPXCHG, 1,
+ [kernel defines atomic64_cmpxchg])
],[
AC_MSG_RESULT([no])
])
])
dnl #
-dnl # 2.6.x API change,
-dnl # check if atomic64_t typedef is defined
+dnl # 2.6.24 API change,
+dnl # check if atomic64_xchg is defined
dnl #
-AC_DEFUN([SPL_AC_TYPE_ATOMIC64_T],
- [AC_MSG_CHECKING([whether kernel defines atomic64_t])
+AC_DEFUN([SPL_AC_TYPE_ATOMIC64_XCHG],
+ [AC_MSG_CHECKING([whether kernel defines atomic64_xchg])
SPL_LINUX_TRY_COMPILE([
- #include <asm/atomic.h>
+ #include <linux/fs.h>
],[
- atomic64_t *ptr;
+ atomic64_xchg((atomic64_t *)NULL, 0);
],[
AC_MSG_RESULT([yes])
- AC_DEFINE(HAVE_ATOMIC64_T, 1,
- [kernel defines atomic64_t])
+ AC_DEFINE(HAVE_ATOMIC64_XCHG, 1,
+ [kernel defines atomic64_xchg])
],[
AC_MSG_RESULT([no])
])
])
dnl #
-dnl # 2.6.20 API change,
-dnl # INIT_WORK use 2 args and not store data inside
+dnl # 2.6.24 API change,
+dnl # check if uintptr_t typedef is defined
dnl #
-AC_DEFUN([SPL_AC_3ARGS_INIT_WORK],
- [AC_MSG_CHECKING([whether INIT_WORK wants 3 args])
+AC_DEFUN([SPL_AC_TYPE_UINTPTR_T],
+ [AC_MSG_CHECKING([whether kernel defines uintptr_t])
SPL_LINUX_TRY_COMPILE([
- #include <linux/workqueue.h>
+ #include <linux/types.h>
],[
- struct work_struct work;
- INIT_WORK(&work, NULL, NULL);
+ uintptr_t *ptr __attribute__ ((unused));
],[
- AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_3ARGS_INIT_WORK, 1,
- [INIT_WORK wants 3 args])
+ AC_MSG_RESULT([yes])
+ AC_DEFINE(HAVE_UINTPTR_T, 1,
+ [kernel defines uintptr_t])
],[
- AC_MSG_RESULT(no)
+ AC_MSG_RESULT([no])
])
])
SPL_LINUX_TRY_COMPILE([
#include <linux/sysctl.h>
],[
- return register_sysctl_table(NULL,0);
+ (void) register_sysctl_table(NULL, 0);
],[
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_2ARGS_REGISTER_SYSCTL, 1,
])
])
+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])
+ tmp_flags="$EXTRA_KCFLAGS"
+ EXTRA_KCFLAGS="-Werror"
+ SPL_LINUX_TRY_COMPILE([
+ #include <linux/mm.h>
+
+ int shrinker_cb(struct shrinker *, int, unsigned int);
+ ],[
+ struct shrinker cache_shrinker = {
+ .shrink = shrinker_cb,
+ .seeks = DEFAULT_SEEKS,
+ };
+ register_shrinker(&cache_shrinker);
+ ],[
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_3ARGS_SHRINKER_CALLBACK, 1,
+ [shrinker callback wants 3 args])
+ ],[
+ AC_MSG_RESULT(no)
+ ])
+ EXTRA_KCFLAGS="$tmp_flags"
+])
+
dnl #
dnl # 2.6.25 API change,
dnl # struct path entry added to struct nameidata
SPL_LINUX_TRY_COMPILE([
#include <linux/namei.h>
],[
- struct nameidata nd;
+ struct nameidata nd __attribute__ ((unused));
nd.path.mnt = NULL;
nd.path.dentry = NULL;
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 #
])
])
+dnl #
+dnl # 2.6.33 API change,
+dnl # Removed .ctl_name from struct ctl_table.
+dnl #
+AC_DEFUN([SPL_AC_CTL_NAME], [
+ AC_MSG_CHECKING([whether struct ctl_table has ctl_name])
+ SPL_LINUX_TRY_COMPILE([
+ #include <linux/sysctl.h>
+ ],[
+ struct ctl_table ctl __attribute__ ((unused));
+ ctl.ctl_name = 0;
+ ],[
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_CTL_NAME, 1, [struct ctl_table has ctl_name])
+ ],[
+ AC_MSG_RESULT(no)
+ ])
+])
+
dnl #
dnl # 2.6.16 API change.
dnl # Check if 'fls64()' 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 #
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])],
- [])
-])
-
-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_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 #
SPL_LINUX_TRY_COMPILE([
#include <linux/time.h>
],[
- struct timespec a, b, c = { 0 };
+ struct timespec a = { 0 };
+ struct timespec b = { 0 };
+ struct timespec c __attribute__ ((unused));
c = timespec_sub(a, b);
],[
AC_MSG_RESULT(yes)
SPL_LINUX_TRY_COMPILE([
#include <linux/utsname.h>
],[
- struct new_utsname *a = init_utsname();
+ struct new_utsname *a __attribute__ ((unused));
+ a = init_utsname();
],[
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_INIT_UTSNAME, 1, [init_utsname() is available])
])
])
-dnl #
-dnl # 2.6.26 API change,
-dnl # definition of struct fdtable relocated to linux/fdtable.h
-dnl #
-AC_DEFUN([SPL_AC_FDTABLE_HEADER], [
- SPL_CHECK_HEADER([linux/fdtable.h], [FDTABLE], [], [])
-])
-
-dnl #
-dnl # 2.6.14 API change,
-dnl # check whether 'files_fdtable()' exists
-dnl #
-AC_DEFUN([SPL_AC_FILES_FDTABLE], [
- AC_MSG_CHECKING([whether files_fdtable() is available])
- SPL_LINUX_TRY_COMPILE([
- #include <linux/sched.h>
- #include <linux/file.h>
- #ifdef HAVE_FDTABLE_HEADER
- #include <linux/fdtable.h>
- #endif
- ],[
- struct files_struct *files = current->files;
- struct fdtable *fdt = files_fdtable(files);
- ],[
- AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_FILES_FDTABLE, 1, [files_fdtable() is available])
- ],[
- AC_MSG_RESULT(no)
- ])
-])
-
dnl #
dnl # 2.6.18 API change,
dnl # added linux/uaccess.h
SPL_LINUX_TRY_COMPILE([
#include <linux/slab.h>
],[
- void *a = kmalloc_node(1, GFP_KERNEL, 0);
+ void *a __attribute__ ((unused));
+ a = kmalloc_node(1, GFP_KERNEL, 0);
],[
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_KMALLOC_NODE, 1, [kmalloc_node() is available])
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 #
])
])
+dnl #
+dnl # 2.6.29 API change,
+dnl # Adaptive mutexs introduced.
+dnl #
+AC_DEFUN([SPL_AC_MUTEX_OWNER], [
+ AC_MSG_CHECKING([whether struct mutex has owner])
+ 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])
+ ],[
+ AC_MSG_RESULT(no)
+ ])
+])
+
+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 #
+AC_DEFUN([SPL_AC_MUTEX_OWNER_TASK_STRUCT], [
+ AC_MSG_CHECKING([whether struct mutex owner is a task_struct])
+ tmp_flags="$EXTRA_KCFLAGS"
+ EXTRA_KCFLAGS="-Werror"
+ SPL_LINUX_TRY_COMPILE([
+ #include <linux/mutex.h>
+ #include <linux/sched.h>
+ ],[
+ struct mutex mtx __attribute__ ((unused));
+ mtx.owner = current;
+ ],[
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_MUTEX_OWNER_TASK_STRUCT, 1,
+ [struct mutex owner is a task_struct])
+ ],[
+ AC_MSG_RESULT(no)
+ ])
+ EXTRA_KCFLAGS="$tmp_flags"
+])
+
dnl #
dnl # 2.6.18 API change,
dnl # First introduced 'mutex_lock_nested()' in include/linux/mutex.h,
])
])
-dnl #
-dnl # 2.6.22 API change,
-dnl # First introduced 'div64_64()' in lib/div64.c
-dnl
-AC_DEFUN([SPL_AC_DIV64_64], [
- SPL_CHECK_SYMBOL_EXPORT(
- [div64_64],
- [],
- [AC_DEFINE(HAVE_DIV64_64, 1,
- [div64_64() is available])],
- [])
-])
-
-dnl #
-dnl # 2.6.26 API change,
-dnl # Renamed 'div64_64()' to 'div64_u64' in lib/div64.c
-dnl #
-AC_DEFUN([SPL_AC_DIV64_U64], [
- SPL_CHECK_SYMBOL_EXPORT(
- [div64_u64],
- [],
- [AC_DEFINE(HAVE_DIV64_U64, 1,
- [div64_u64() is available])],
- [])
-])
-
dnl #
dnl # 2.6.27 API change,
dnl # on_each_cpu() uses 3 args, no 'retry' argument
AC_DEFUN([SPL_AC_3ARGS_ON_EACH_CPU], [
AC_MSG_CHECKING([whether on_each_cpu() wants 3 args])
SPL_LINUX_TRY_COMPILE([
+ #include <linux/interrupt.h>
#include <linux/smp.h>
+
+ void on_each_cpu_func(void *data) { return; }
],[
- on_each_cpu(NULL, NULL, 0);
+ on_each_cpu(on_each_cpu_func, NULL, 0);
],[
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_3ARGS_ON_EACH_CPU, 1,
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 #
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 #
+dnl # 3.10 API change,
+dnl # struct vmalloc_info is now declared in linux/vmalloc.h
+dnl #
+AC_DEFUN([SPL_AC_VMALLOC_INFO], [
+ AC_MSG_CHECKING([whether struct vmalloc_info is declared])
+ SPL_LINUX_TRY_COMPILE([
+ #include <linux/vmalloc.h>
+ struct vmalloc_info { void *a; };
+ ],[
+ return 0;
+ ],[
+ AC_MSG_RESULT(no)
+ ],[
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_VMALLOC_INFO, 1, [yes])
+ ])
+])
+
+dnl #
+dnl # 3.10 API change,
+dnl # PDE is replaced by PDE_DATA
+dnl #
+AC_DEFUN([SPL_AC_PDE_DATA], [
+ AC_MSG_CHECKING([whether PDE_DATA() is available])
+ SPL_LINUX_TRY_COMPILE_SYMBOL([
+ #include <linux/proc_fs.h>
+ ], [
+ PDE_DATA(NULL);
+ ], [PDE_DATA], [], [
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_PDE_DATA, 1, [yes])
+ ],[
+ AC_MSG_RESULT(no)
+ ])
])
dnl #
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
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 #
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 #
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])],
- [])
-])
-
-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_ZONE_COUNTS], [
- SPL_CHECK_SYMBOL_EXPORT(
- [get_zone_counts],
- [],
- [AC_DEFINE(HAVE_GET_ZONE_COUNTS, 1,
- [get_zone_counts() 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 #
AC_DEFUN([SPL_AC_GLOBAL_PAGE_STATE], [
AC_MSG_CHECKING([whether global_page_state() is available])
SPL_LINUX_TRY_COMPILE([
- #include <linux/vmstat.h>
+ #include <linux/mm.h>
],[
- unsigned long state;
- state = global_page_state(NR_FREE_PAGES);
+ unsigned long state __attribute__ ((unused));
+ state = global_page_state(0);
],[
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_GLOBAL_PAGE_STATE, 1,
])
dnl #
-dnl # 2.6.21 API change,
-dnl # Public global zone stats now include free/inactive/active page
-dnl # counts. This replaced the priviate get_zone_counts() interface.
+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 #
+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 #
-AC_DEFUN([SPL_AC_ZONE_STAT_ITEM_FIA], [
- AC_MSG_CHECKING([whether free/inactive/active page state is available])
+AC_DEFUN([SPL_AC_ZONE_STAT_ITEM_FREE], [
+ AC_MSG_CHECKING([whether page state NR_FREE_PAGES is available])
SPL_LINUX_TRY_COMPILE([
- #include <linux/mmzone.h>
+ #include <linux/mm.h>
+ ],[
+ enum zone_stat_item zsi __attribute__ ((unused));
+ zsi = NR_FREE_PAGES;
+ ],[
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_FREE_PAGES, 1,
+ [Page state NR_FREE_PAGES 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 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 #
+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])
+ SPL_LINUX_TRY_COMPILE([
+ #include <linux/mm.h>
+ ],[
+ enum zone_stat_item zsi __attribute__ ((unused));
+ zsi = NR_INACTIVE;
+ ],[
+ 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])
+ SPL_LINUX_TRY_COMPILE([
+ #include <linux/mm.h>
+ ],[
+ enum zone_stat_item zsi __attribute__ ((unused));
+ zsi = NR_INACTIVE_ANON;
+ ],[
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_INACTIVE_ANON, 1,
+ [Page state NR_INACTIVE_ANON is available])
+ ],[
+ AC_MSG_RESULT(no)
+ ])
+
+ AC_MSG_CHECKING([whether page state NR_INACTIVE_FILE is available])
+ SPL_LINUX_TRY_COMPILE([
+ #include <linux/mm.h>
+ ],[
+ enum zone_stat_item zsi __attribute__ ((unused));
+ zsi = NR_INACTIVE_FILE;
+ ],[
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_INACTIVE_FILE, 1,
+ [Page state NR_INACTIVE_FILE 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 #
+AC_DEFUN([SPL_AC_ZONE_STAT_ITEM_ACTIVE], [
+ AC_MSG_CHECKING([whether page state NR_ACTIVE is available])
+ SPL_LINUX_TRY_COMPILE([
+ #include <linux/mm.h>
+ ],[
+ enum zone_stat_item zsi __attribute__ ((unused));
+ zsi = NR_ACTIVE;
+ ],[
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_ACTIVE, 1,
+ [Page state NR_ACTIVE is available])
+ ],[
+ AC_MSG_RESULT(no)
+ ])
+
+ AC_MSG_CHECKING([whether page state NR_ACTIVE_ANON is available])
+ SPL_LINUX_TRY_COMPILE([
+ #include <linux/mm.h>
+ ],[
+ enum zone_stat_item zsi __attribute__ ((unused));
+ zsi = NR_ACTIVE_ANON;
+ ],[
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_ACTIVE_ANON, 1,
+ [Page state NR_ACTIVE_ANON is available])
],[
- enum zone_stat_item i1, i2, i3;
- i1 = NR_FREE_PAGES;
- i2 = NR_INACTIVE;
- i3 = NR_ACTIVE;
+ AC_MSG_RESULT(no)
+ ])
+
+ AC_MSG_CHECKING([whether page state NR_ACTIVE_FILE is available])
+ SPL_LINUX_TRY_COMPILE([
+ #include <linux/mm.h>
+ ],[
+ enum zone_stat_item zsi __attribute__ ((unused));
+ zsi = NR_ACTIVE_FILE;
],[
AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_ZONE_STAT_ITEM_FIA, 1,
- [free/inactive/active page state is available])
+ AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_ACTIVE_FILE, 1,
+ [Page state NR_ACTIVE_FILE is available])
+ ],[
+ AC_MSG_RESULT(no)
+ ])
+])
+
+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])
+ SPL_LINUX_TRY_COMPILE([
+ ],[
+ #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)
+ ],[
+ 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 # 3.9 API change
+dnl # set_fs_pwd takes const struct path *
+dnl #
+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/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;
+ ],[
+ return 0;
+ ],[
+ AC_MSG_RESULT(yes)
+ 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="$tmp_flags"
])
dnl #
AC_MSG_RESULT(no)
])
])
+
+dnl #
+dnl # 2.6.36 API change,
+dnl # The 'struct fs_struct->lock' was changed from a rwlock_t to
+dnl # a spinlock_t to improve the fastpath performance.
+dnl #
+AC_DEFUN([SPL_AC_FS_STRUCT_SPINLOCK], [
+ AC_MSG_CHECKING([whether struct fs_struct uses spinlock_t])
+ tmp_flags="$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 # 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_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 # 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>
+ #ifdef HAVE_KUIDGID_T
+ #include <linux/uidgid.h>
+ #endif
+ ], [
+ #ifdef HAVE_KUIDGID_T
+ groups_search(NULL, KGIDT_INIT(0));
+ #else
+ groups_search(NULL, 0);
+ #endif
+ ], [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_MSG_RESULT(no)
+ ])
+ EXTRA_KCFLAGS="$tmp_flags"
+])
+
+dnl #
+dnl # 3.9 API change,
+dnl # Moved things from linux/sched.h to linux/sched/rt.h
+dnl #
+AC_DEFUN([SPL_AC_SCHED_RT_HEADER],
+ [AC_MSG_CHECKING([whether header linux/sched/rt.h exists])
+ SPL_LINUX_TRY_COMPILE([
+ #include <linux/sched.h>
+ #include <linux/sched/rt.h>
+ ],[
+ return 0;
+ ],[
+ AC_DEFINE(HAVE_SCHED_RT_HEADER, 1, [linux/sched/rt.h exists])
+ AC_MSG_RESULT(yes)
+ ],[
+ AC_MSG_RESULT(no)
+ ])
+])
+
+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/fs.h>
+ ],[
+ vfs_getattr((struct path *) NULL,
+ (struct kstat *)NULL);
+ ],[
+ AC_MSG_RESULT(2 args)
+ AC_DEFINE(HAVE_2ARGS_VFS_GETATTR, 1,
+ [vfs_getattr wants 2 args])
+ ],[
+ 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)
+ ])
+ ])
+])
projects / mirror_spl-debian.git / blobdiff