X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=config%2Fspl-build.m4;h=eef52334fb10532d00351607990534e50be0777e;hb=9e4fb5c2f9158743c5e87456334c88008e2e2074;hp=e6a62610843b2f7235cf1aefcfdc9d67f79ab85c;hpb=51a727e90f1dd11194737e64e85ca09d34be5d8b;p=mirror_spl-debian.git diff --git a/config/spl-build.m4 b/config/spl-build.m4 index e6a6261..eef5233 100644 --- a/config/spl-build.m4 +++ b/config/spl-build.m4 @@ -1,38 +1,39 @@ -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 . +############################################################################### +# 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_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_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 @@ -41,16 +42,13 @@ AC_DEFUN([SPL_AC_CONFIG_KERNEL], [ 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 @@ -64,24 +62,57 @@ AC_DEFUN([SPL_AC_CONFIG_KERNEL], [ 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_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 + SPL_AC_USLEEP_RANGE + SPL_AC_KMEM_CACHE_ALLOCFLAGS ]) 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/$LINUX_SYMBOLS"; then + AC_MSG_ERROR([ + *** Please make sure the kernel devel package for your distribution + *** is installed. If you are building with a custom kernel, make sure the + *** kernel is configured, built, and the '--with-linux=PATH' configure + *** option refers to the location of the kernel source.]) + fi else LINUX_SYMBOLS=NONE fi @@ -102,16 +133,22 @@ AC_DEFUN([SPL_AC_KERNEL], [ AC_MSG_CHECKING([kernel source directory]) if test -z "$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 @@ -120,14 +157,23 @@ AC_DEFUN([SPL_AC_KERNEL], [ 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=${kernelsrc} fi @@ -135,28 +181,36 @@ AC_DEFUN([SPL_AC_KERNEL], [ AC_MSG_RESULT([$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 "; - 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 $utsrelease3; then + utsrelease=generated/utsrelease.h + fi - kernsrcver=`(echo "#include "; + if test "$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]) @@ -177,6 +231,202 @@ dnl # Default SPL user configuration 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/' directory and enabled using +dnl # the --with-spec= 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([$DEFAULT_PACKAGE]) + AC_SUBST(DEFAULT_PACKAGE) +]) + +dnl # +dnl # Default SPL user configuration +dnl # +AC_DEFUN([SPL_AC_PACKAGE], [ + SPL_AC_DEFAULT_PACKAGE + SPL_AC_RPM + SPL_AC_DPKG + SPL_AC_ALIEN +]) + AC_DEFUN([SPL_AC_LICENSE], [ AC_MSG_CHECKING([spl license]) LICENSE=GPL @@ -186,127 +436,166 @@ AC_DEFUN([SPL_AC_LICENSE], [ ]) AC_DEFUN([SPL_AC_CONFIG], [ - SPL_CONFIG=all - AC_ARG_WITH([config], - AS_HELP_STRING([--with-config=CONFIG], - [Config file 'kernel|user|all']), - [SPL_CONFIG="$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_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 + AC_SUBST(DEBUG_KMEM) + AC_MSG_CHECKING([whether basic kmem accounting is enabled]) + AC_MSG_RESULT([$enable_debug_kmem]) ]) -AC_DEFUN([SPL_AC_DEBUG_CALLB], [ - AC_MSG_CHECKING([whether callb debugging is enabled]) - AC_ARG_ENABLE( [debug-callb], - AS_HELP_STRING([--enable-debug-callb], - [Enable callb debug support (default off)]), - [ case "$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="${KERNELCPPFLAGS} -DDEBUG_CALLB" - else - AC_MSG_RESULT([no]) - fi +dnl # +dnl # Disabled by default it provides detailed memory tracking. This +dnl # feature also requires --enable-debug-kmem to be set. When enabled +dnl # not only will total bytes be tracked but also the location of every +dnl # alloc and free. When the SPL module is unloaded a list of all leaked +dnl # addresses and where they were allocated will be dumped to the console. +dnl # Enabling this feature has a significant impact on performance but it +dnl # makes finding memory leaks pretty straight forward. +dnl # +AC_DEFUN([SPL_AC_DEBUG_KMEM_TRACKING], [ + AC_ARG_ENABLE([debug-kmem-tracking], + [AS_HELP_STRING([--enable-debug-kmem-tracking], + [Enable detailed kmem tracking @<:@default=no@:>@])], + [], + [enable_debug_kmem_tracking=no]) + + AS_IF([test "x$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 ]) @@ -332,12 +621,14 @@ dnl # SPL_LINUX_COMPILE_IFELSE / like AC_COMPILE_IFELSE 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 ]) @@ -353,34 +644,11 @@ AC_DEFUN([SPL_LINUX_TRY_COMPILE], [$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 - #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:]]]' \ $LINUX_OBJ/Module*.symvers 2>/dev/null rc=$? @@ -390,21 +658,63 @@ AC_DEFUN([SPL_CHECK_SYMBOL_EXPORT], 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 + $4 fi ]) @@ -428,61 +738,131 @@ AC_DEFUN([SPL_CHECK_HEADER], ]) ]) +dnl # +dnl # Basic toolchain sanity check. +dnl # +AC_DEFUN([SPL_AC_TEST_MODULE], + [AC_MSG_CHECKING([whether modules can be built]) + SPL_LINUX_TRY_COMPILE([],[],[ + AC_MSG_RESULT([yes]) + ],[ + AC_MSG_RESULT([no]) + if test "x$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 + ],[ + 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 + #include ],[ - 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 + #include ],[ - 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 + #include ],[ - 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]) ]) ]) @@ -495,7 +875,7 @@ AC_DEFUN([SPL_AC_2ARGS_REGISTER_SYSCTL], SPL_LINUX_TRY_COMPILE([ #include ],[ - return register_sysctl_table(NULL,0); + (void) register_sysctl_table(NULL, 0); ],[ AC_MSG_RESULT(yes) AC_DEFINE(HAVE_2ARGS_REGISTER_SYSCTL, 1, @@ -505,23 +885,108 @@ AC_DEFUN([SPL_AC_2ARGS_REGISTER_SYSCTL], ]) ]) -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]) +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 + + int shrinker_cb(int nr_to_scan, gfp_t gfp_mask); ],[ - return set_shrinker(DEFAULT_SEEKS, NULL); + struct shrinker cache_shrinker = { + .shrink = shrinker_cb, + .seeks = DEFAULT_SEEKS, + }; + register_shrinker(&cache_shrinker); ],[ - AC_MSG_RESULT([yes]) - AC_DEFINE(HAVE_SET_SHRINKER, 1, - [set_shrinker() available]) + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_2ARGS_OLD_SHRINKER_CALLBACK, 1, + [old shrinker callback wants 2 args]) ],[ - AC_MSG_RESULT([no]) + 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 + + 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 + + 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 + + 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 # @@ -533,7 +998,7 @@ AC_DEFUN([SPL_AC_PATH_IN_NAMEIDATA], SPL_LINUX_TRY_COMPILE([ #include ],[ - struct nameidata nd; + struct nameidata nd __attribute__ ((unused)); nd.path.mnt = NULL; nd.path.dentry = NULL; @@ -549,10 +1014,18 @@ AC_DEFUN([SPL_AC_PATH_IN_NAMEIDATA], 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 + ], [ + 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 # @@ -576,6 +1049,25 @@ AC_DEFUN([SPL_AC_CTL_UNNUMBERED], ]) ]) +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 + ],[ + 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 @@ -599,13 +1091,15 @@ 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], [ - 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 # @@ -635,25 +1129,37 @@ 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 # -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])], - []) +AC_DEFUN([SPL_AC_CLASS_DEVICE_CREATE], + [AC_MSG_CHECKING([whether class_device_create() is available]) + SPL_LINUX_TRY_COMPILE_SYMBOL([ + #include + ], [ + 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 + ], [ + 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 # @@ -686,7 +1192,9 @@ AC_DEFUN([SPL_AC_TIMESPEC_SUB], [ SPL_LINUX_TRY_COMPILE([ #include ],[ - 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) @@ -705,7 +1213,8 @@ AC_DEFUN([SPL_AC_INIT_UTSNAME], [ SPL_LINUX_TRY_COMPILE([ #include ],[ - 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]) @@ -715,54 +1224,24 @@ AC_DEFUN([SPL_AC_INIT_UTSNAME], [ ]) dnl # -dnl # 2.6.26 API change, -dnl # definition of struct fdtable relocated to linux/fdtable.h +dnl # 2.6.18 API change, +dnl # added linux/uaccess.h dnl # -AC_DEFUN([SPL_AC_FDTABLE_HEADER], [ - SPL_CHECK_HEADER([linux/fdtable.h], [FDTABLE], [], []) +AC_DEFUN([SPL_AC_UACCESS_HEADER], [ + SPL_CHECK_HEADER([linux/uaccess.h], [UACCESS], [], []) ]) 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 - #include - #ifdef HAVE_FDTABLE_HEADER - #include - #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 -dnl # -AC_DEFUN([SPL_AC_UACCESS_HEADER], [ - SPL_CHECK_HEADER([linux/uaccess.h], [UACCESS], [], []) -]) - -dnl # -dnl # 2.6.12 API change, -dnl # check whether 'kmalloc_node()' is available. +dnl # 2.6.12 API change, +dnl # check whether 'kmalloc_node()' is available. dnl # AC_DEFUN([SPL_AC_KMALLOC_NODE], [ AC_MSG_CHECKING([whether kmalloc_node() is available]) SPL_LINUX_TRY_COMPILE([ #include ],[ - 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]) @@ -776,13 +1255,19 @@ 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], [ - 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 + ], [ + monotonic_clock(); + ], [monotonic_clock], [], [ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_MONOTONIC_CLOCK, 1, + [monotonic_clock() is available]) + ], [ + AC_MSG_RESULT(no) + ]) ]) dnl # @@ -814,7 +1299,7 @@ AC_DEFUN([SPL_AC_MUTEX_OWNER], [ SPL_LINUX_TRY_COMPILE([ #include ],[ - struct mutex mtx; + struct mutex mtx __attribute__ ((unused)); mtx.owner = NULL; ],[ AC_MSG_RESULT(yes) @@ -824,6 +1309,33 @@ AC_DEFUN([SPL_AC_MUTEX_OWNER], [ ]) ]) +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="$EXTRA_KCFLAGS" + EXTRA_KCFLAGS="-Werror" + SPL_LINUX_TRY_COMPILE([ + #include + #include + ],[ + struct mutex mtx __attribute__ ((unused)); + mtx.owner = current; + ],[ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_MUTEX_OWNER_TASK_STRUCT, 1, + [struct mutex owner is a task_struct]) + ],[ + AC_MSG_RESULT(no) + ]) + EXTRA_KCFLAGS="$tmp_flags" +]) + dnl # dnl # 2.6.18 API change, dnl # First introduced 'mutex_lock_nested()' in include/linux/mutex.h, @@ -847,32 +1359,6 @@ AC_DEFUN([SPL_AC_MUTEX_LOCK_NESTED], [ ]) ]) -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 @@ -880,9 +1366,12 @@ dnl # AC_DEFUN([SPL_AC_3ARGS_ON_EACH_CPU], [ AC_MSG_CHECKING([whether on_each_cpu() wants 3 args]) SPL_LINUX_TRY_COMPILE([ + #include #include + + 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, @@ -896,13 +1385,19 @@ dnl # 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 + ], [ + 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 # @@ -912,13 +1407,52 @@ 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], [ - 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 + 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 + ], [ + PDE_DATA(NULL); + ], [PDE_DATA], [], [ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_PDE_DATA, 1, [yes]) + ],[ + AC_MSG_RESULT(no) + ]) ]) dnl # @@ -940,7 +1474,7 @@ AC_DEFUN([SPL_AC_PGDAT_HELPERS], [ 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 @@ -953,13 +1487,19 @@ 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], [ - 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 + ], [ + 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 # @@ -969,13 +1509,19 @@ 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], [ - 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 + ], [ + 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 # @@ -985,26 +1531,35 @@ 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_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 + ], [ + 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])], - []) +AC_DEFUN([SPL_AC_PGDAT_LIST], + [AC_MSG_CHECKING([whether pgdat_list is available]) + SPL_LINUX_TRY_COMPILE_SYMBOL([ + #include + 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 # @@ -1016,7 +1571,7 @@ AC_DEFUN([SPL_AC_GLOBAL_PAGE_STATE], [ SPL_LINUX_TRY_COMPILE([ #include ],[ - unsigned long state; + unsigned long state __attribute__ ((unused)); state = global_page_state(0); ],[ AC_MSG_RESULT(yes) @@ -1042,7 +1597,7 @@ AC_DEFUN([SPL_AC_ZONE_STAT_ITEM_FREE], [ SPL_LINUX_TRY_COMPILE([ #include ],[ - enum zone_stat_item zsi; + enum zone_stat_item zsi __attribute__ ((unused)); zsi = NR_FREE_PAGES; ],[ AC_MSG_RESULT(yes) @@ -1069,7 +1624,7 @@ AC_DEFUN([SPL_AC_ZONE_STAT_ITEM_INACTIVE], [ SPL_LINUX_TRY_COMPILE([ #include ],[ - enum zone_stat_item zsi; + enum zone_stat_item zsi __attribute__ ((unused)); zsi = NR_INACTIVE; ],[ AC_MSG_RESULT(yes) @@ -1083,7 +1638,7 @@ AC_DEFUN([SPL_AC_ZONE_STAT_ITEM_INACTIVE], [ SPL_LINUX_TRY_COMPILE([ #include ],[ - enum zone_stat_item zsi; + enum zone_stat_item zsi __attribute__ ((unused)); zsi = NR_INACTIVE_ANON; ],[ AC_MSG_RESULT(yes) @@ -1097,7 +1652,7 @@ AC_DEFUN([SPL_AC_ZONE_STAT_ITEM_INACTIVE], [ SPL_LINUX_TRY_COMPILE([ #include ],[ - enum zone_stat_item zsi; + enum zone_stat_item zsi __attribute__ ((unused)); zsi = NR_INACTIVE_FILE; ],[ AC_MSG_RESULT(yes) @@ -1124,7 +1679,7 @@ AC_DEFUN([SPL_AC_ZONE_STAT_ITEM_ACTIVE], [ SPL_LINUX_TRY_COMPILE([ #include ],[ - enum zone_stat_item zsi; + enum zone_stat_item zsi __attribute__ ((unused)); zsi = NR_ACTIVE; ],[ AC_MSG_RESULT(yes) @@ -1138,7 +1693,7 @@ AC_DEFUN([SPL_AC_ZONE_STAT_ITEM_ACTIVE], [ SPL_LINUX_TRY_COMPILE([ #include ],[ - enum zone_stat_item zsi; + enum zone_stat_item zsi __attribute__ ((unused)); zsi = NR_ACTIVE_ANON; ],[ AC_MSG_RESULT(yes) @@ -1152,7 +1707,7 @@ AC_DEFUN([SPL_AC_ZONE_STAT_ITEM_ACTIVE], [ SPL_LINUX_TRY_COMPILE([ #include ],[ - enum zone_stat_item zsi; + enum zone_stat_item zsi __attribute__ ((unused)); zsi = NR_ACTIVE_FILE; ],[ AC_MSG_RESULT(yes) @@ -1196,82 +1751,212 @@ AC_DEFUN([SPL_AC_GET_ZONE_COUNTS], [ AC_DEFINE(NEED_GET_ZONE_COUNTS, 1, [get_zone_counts() is needed]) - SPL_CHECK_SYMBOL_EXPORT( - [get_zone_counts], - [], - [AC_DEFINE(HAVE_GET_ZONE_COUNTS, 1, - [get_zone_counts() is available])], - []) + AC_MSG_CHECKING([whether get_zone_counts() is available]) + SPL_LINUX_TRY_COMPILE_SYMBOL([ + #include + ], [ + 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 + #include + ], [ + 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], [ - SPL_CHECK_SYMBOL_EXPORT( - [set_fs_pwd], - [], - [AC_DEFINE(HAVE_SET_FS_PWD, 1, - [set_fs_pwd() is available])], - []) +AC_DEFUN([SPL_AC_SET_FS_PWD], + [AC_MSG_CHECKING([whether set_fs_pwd() is available]) + SPL_LINUX_TRY_COMPILE_SYMBOL([ + #include + #include + ], [ + (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 # 3.9 API change +dnl # set_fs_pwd takes const struct path * dnl # -AC_DEFUN([SPL_AC_2ARGS_SET_FS_PWD], - [AC_MSG_CHECKING([whether set_fs_pwd() wants 2 args]) +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 + #include + #include + #include + void (*const set_fs_pwd_func) + (struct fs_struct *, const struct path *) + = set_fs_pwd; ],[ - set_fs_pwd(NULL, NULL); + return 0; ],[ AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_2ARGS_SET_FS_PWD, 1, - [set_fs_pwd() wants 2 args]) - ],[ - AC_MSG_RESULT(no) + AC_DEFINE(HAVE_SET_FS_PWD_WITH_CONST, 1, + [set_fs_pwd() needs const path *]) + ],[ + SPL_LINUX_TRY_COMPILE([ + #include + #include + #include + 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 # 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 ],[ - vfs_unlink(NULL, NULL); + vfs_unlink((struct inode *) NULL, (struct dentry *) NULL); ],[ AC_MSG_RESULT(yes) AC_DEFINE(HAVE_2ARGS_VFS_UNLINK, 1, [vfs_unlink() wants 2 args]) ],[ AC_MSG_RESULT(no) + dnl # + dnl # Linux 3.13 API change + dnl # Added delegated inode + dnl # + AC_MSG_CHECKING([whether vfs_unlink() wants 3 args]) + SPL_LINUX_TRY_COMPILE([ + #include + ],[ + vfs_unlink((struct inode *) NULL, + (struct dentry *) NULL, + (struct inode **) NULL); + ],[ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_3ARGS_VFS_UNLINK, 1, + [vfs_unlink() wants 3 args]) + ],[ + AC_MSG_ERROR(no) + ]) + ]) ]) -dnl # -dnl # SLES API change, never adopted in mainline, -dnl # Third and sixth 'struct vfsmount *' argument removed. -dnl # AC_DEFUN([SPL_AC_4ARGS_VFS_RENAME], [AC_MSG_CHECKING([whether vfs_rename() wants 4 args]) SPL_LINUX_TRY_COMPILE([ #include ],[ - vfs_rename(NULL, NULL, NULL, NULL); + vfs_rename((struct inode *) NULL, (struct dentry *) NULL, + (struct inode *) NULL, (struct dentry *) NULL); ],[ AC_MSG_RESULT(yes) AC_DEFINE(HAVE_4ARGS_VFS_RENAME, 1, [vfs_rename() wants 4 args]) + ],[ + AC_MSG_RESULT(no) + dnl # + dnl # Linux 3.13 API change + dnl # Added delegated inode + dnl # + AC_MSG_CHECKING([whether vfs_rename() wants 5 args]) + SPL_LINUX_TRY_COMPILE([ + #include + ],[ + 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 + ],[ + vfs_rename((struct inode *) NULL, + (struct dentry *) NULL, + (struct inode *) NULL, + (struct dentry *) NULL, + (struct inode **) NULL, + (unsigned int) 0); + ],[ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_6ARGS_VFS_RENAME, 1, + [vfs_rename() wants 6 args]) + ],[ + AC_MSG_ERROR(no) + ]) + ]) + ]) +]) + +dnl # +dnl # 2.6.36 API 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 + #include + ],[ + 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 # @@ -1283,7 +1968,7 @@ AC_DEFUN([SPL_AC_CRED_STRUCT], [ SPL_LINUX_TRY_COMPILE([ #include ],[ - struct cred *cr; + struct cred *cr __attribute__ ((unused)); cr = NULL; ],[ AC_MSG_RESULT(yes) @@ -1293,27 +1978,595 @@ AC_DEFUN([SPL_AC_CRED_STRUCT], [ ]) ]) + +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 + ], [ + kuid_t userid = KUIDT_INIT(0); + kgid_t groupid = KGIDT_INIT(0); + ],[ + SPL_LINUX_TRY_COMPILE([ + #include + ], [ + 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], [ - SPL_CHECK_SYMBOL_EXPORT( - [groups_search], - [], - [AC_DEFINE(HAVE_GROUPS_SEARCH, 1, - [groups_search() is available])], - []) +AC_DEFUN([SPL_AC_GROUPS_SEARCH], + [AC_MSG_CHECKING([whether groups_search() is available]) + SPL_LINUX_TRY_COMPILE_SYMBOL([ + #include + #ifdef HAVE_KUIDGID_T + #include + #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], [ - SPL_CHECK_SYMBOL_EXPORT( - [__put_task_struct], - [], - [AC_DEFINE(HAVE_PUT_TASK_STRUCT, 1, - [__put_task_struct() is available])], +AC_DEFUN([SPL_AC_PUT_TASK_STRUCT], + [AC_MSG_CHECKING([whether __put_task_struct() is available]) + SPL_LINUX_TRY_COMPILE_SYMBOL([ + #include + ], [ + __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 + ],[ + 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 + ], [ + 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 + ], [ + (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 + ],[ + 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 + ],[ + 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 + ],[ + 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 + ],[ + 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 + ],[ + 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 + 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 + ], [ + 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 + ], [ + 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 + ], [ + 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 + ],[ + 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 + ],[ + 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 + ],[ + 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 + #include + ],[ + 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 + ],[ + 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 + ],[ + vfs_getattr((struct vfsmount *)NULL, + (struct dentry *)NULL, + (struct kstat *)NULL); + ],[ + AC_MSG_RESULT(3 args) + ],[ + AC_MSG_ERROR(unknown) + ]) + ]) +]) + +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 + ],[ + usleep_range(0, 0); + ],[ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_USLEEP_RANGE, 1, + [usleep_range is available]) + ],[ + AC_MSG_RESULT(no) + ]) +]) + +dnl # +dnl # 2.6.35 API change, +dnl # The cachep->gfpflags member was renamed cachep->allocflags. These are +dnl # private allocation flags which are applied when allocating a new slab +dnl # in kmem_getpages(). Unfortunately there is no public API for setting +dnl # non-default flags. +dnl # +AC_DEFUN([SPL_AC_KMEM_CACHE_ALLOCFLAGS], [ + AC_MSG_CHECKING([whether struct kmem_cache has allocflags]) + SPL_LINUX_TRY_COMPILE([ + #include + ],[ + struct kmem_cache cachep __attribute__ ((unused)); + cachep.allocflags = GFP_KERNEL; + ],[ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_KMEM_CACHE_ALLOCFLAGS, 1, + [struct kmem_cache has allocflags]) + ],[ + AC_MSG_RESULT(no) + + AC_MSG_CHECKING([whether struct kmem_cache has gfpflags]) + SPL_LINUX_TRY_COMPILE([ + #include + ],[ + 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) + ]) + ]) +])