X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=config%2Fspl-build.m4;h=5a2f1ded2534c0938da2fa49b05c1a224fffe77e;hb=ac9cc135ee85ae69aeccf9e251a657803cbf74d3;hp=1a7512c96b10179f50d7411ca6bf77eaa3b2c6f7;hpb=03318641afc3e2d6dc18614aaa75d6a0125cb933;p=mirror_spl-debian.git diff --git a/config/spl-build.m4 b/config/spl-build.m4 index 1a7512c..5a2f1de 100644 --- a/config/spl-build.m4 +++ b/config/spl-build.m4 @@ -8,7 +8,6 @@ AC_DEFUN([SPL_AC_CONFIG_KERNEL], [ SPL_AC_KERNEL - SPL_AC_KERNEL_CONFIG if test "${LINUX_OBJ}" != "${LINUX}"; then KERNELMAKE_PARAMS="$KERNELMAKE_PARAMS O=$LINUX_OBJ" @@ -21,70 +20,42 @@ AC_DEFUN([SPL_AC_CONFIG_KERNEL], [ SPL_AC_DEBUG SPL_AC_DEBUG_KMEM SPL_AC_DEBUG_KMEM_TRACKING + SPL_AC_TEST_MODULE SPL_AC_ATOMIC_SPINLOCK - SPL_AC_TYPE_ATOMIC64_CMPXCHG - SPL_AC_TYPE_ATOMIC64_XCHG - SPL_AC_TYPE_UINTPTR_T - SPL_AC_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_SHRINKER_CALLBACK SPL_AC_CTL_NAME - SPL_AC_FLS64 - SPL_AC_DEVICE_CREATE - SPL_AC_5ARGS_DEVICE_CREATE - SPL_AC_CLASS_DEVICE_CREATE - SPL_AC_SET_NORMALIZED_TIMESPEC_EXPORT - SPL_AC_SET_NORMALIZED_TIMESPEC_INLINE - SPL_AC_TIMESPEC_SUB - SPL_AC_INIT_UTSNAME - SPL_AC_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_LOCK_NESTED - SPL_AC_3ARGS_ON_EACH_CPU - SPL_AC_KALLSYMS_LOOKUP_NAME - SPL_AC_GET_VMALLOC_INFO - SPL_AC_PGDAT_HELPERS - SPL_AC_FIRST_ONLINE_PGDAT - SPL_AC_NEXT_ONLINE_PGDAT - SPL_AC_NEXT_ZONE - SPL_AC_PGDAT_LIST - SPL_AC_GLOBAL_PAGE_STATE - SPL_AC_ZONE_STAT_ITEM_FREE - SPL_AC_ZONE_STAT_ITEM_INACTIVE - SPL_AC_ZONE_STAT_ITEM_ACTIVE - SPL_AC_GET_ZONE_COUNTS - SPL_AC_USER_PATH_DIR - SPL_AC_SET_FS_PWD - SPL_AC_2ARGS_SET_FS_PWD + SPL_AC_CONFIG_TRIM_UNUSED_KSYMS + SPL_AC_PDE_DATA + SPL_AC_SET_FS_PWD_WITH_CONST SPL_AC_2ARGS_VFS_UNLINK SPL_AC_4ARGS_VFS_RENAME + SPL_AC_2ARGS_VFS_FSYNC + SPL_AC_INODE_TRUNCATE_RANGE SPL_AC_FS_STRUCT_SPINLOCK - SPL_AC_CRED_STRUCT - SPL_AC_GROUPS_SEARCH + SPL_AC_KUIDGID_T SPL_AC_PUT_TASK_STRUCT - SPL_AC_5ARGS_PROC_HANDLER - SPL_AC_KVASPRINTF - SPL_AC_3ARGS_FILE_FSYNC - SPL_AC_EXPORTED_RWSEM_IS_LOCKED - SPL_AC_KERNEL_INVALIDATE_INODES - SPL_AC_KERNEL_2ARGS_INVALIDATE_INODES - SPL_AC_SHRINK_DCACHE_MEMORY - SPL_AC_SHRINK_ICACHE_MEMORY + SPL_AC_KERNEL_FALLOCATE + SPL_AC_CONFIG_ZLIB_INFLATE + SPL_AC_CONFIG_ZLIB_DEFLATE + SPL_AC_2ARGS_ZLIB_DEFLATE_WORKSPACESIZE + SPL_AC_SHRINK_CONTROL_STRUCT + SPL_AC_RWSEM_SPINLOCK_IS_RAW + SPL_AC_RWSEM_ACTIVITY + SPL_AC_RWSEM_ATOMIC_LONG_COUNT + SPL_AC_SCHED_RT_HEADER + SPL_AC_2ARGS_VFS_GETATTR + SPL_AC_USLEEP_RANGE + SPL_AC_KMEM_CACHE_ALLOCFLAGS + SPL_AC_WAIT_ON_BIT + SPL_AC_INODE_LOCK + SPL_AC_MUTEX_OWNER + SPL_AC_GROUP_INFO_GID ]) 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 $modpost; then LINUX_SYMBOLS=Modules.symvers else @@ -94,7 +65,7 @@ AC_DEFUN([SPL_AC_MODULE_SYMVERS], [ if ! test -f "$LINUX_OBJ/$LINUX_SYMBOLS"; then AC_MSG_ERROR([ *** Please make sure the kernel devel package for your distribution - *** is installed. If your building with a custom kernel make sure the + *** is installed. If you are building with a custom kernel, make sure the *** kernel is configured, built, and the '--with-linux=PATH' configure *** option refers to the location of the kernel source.]) fi @@ -126,18 +97,14 @@ AC_DEFUN([SPL_AC_KERNEL], [ sourcelink=$(readlink -f "$headersdir") else sourcelink=$(ls -1d /usr/src/kernels/* \ - /usr/src/linux-* \ + /usr/src/linux-* \ 2>/dev/null | grep -v obj | tail -1) fi if test -n "$sourcelink" && test -e ${sourcelink}; then kernelsrc=`readlink -f ${sourcelink}` else - AC_MSG_RESULT([Not found]) - AC_MSG_ERROR([ - *** Please make sure the kernel devel package for your distribution - *** is installed then try again. If that fails you can specify the - *** location of the kernel source with the '--with-linux=PATH' option.]) + kernelsrc="[Not found]" fi else if test "$kernelsrc" = "NONE"; then @@ -146,6 +113,13 @@ 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 "$kernelbuild"; then if test -e "/lib/modules/$(uname -r)/build"; then @@ -186,7 +160,13 @@ AC_DEFUN([SPL_AC_KERNEL], [ fi else AC_MSG_RESULT([Not found]) - AC_MSG_ERROR([*** Cannot find UTS_RELEASE definition.]) + 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]) @@ -202,38 +182,21 @@ AC_DEFUN([SPL_AC_KERNEL], [ SPL_AC_MODULE_SYMVERS ]) -AC_DEFUN([SPL_AC_KERNEL_CONFIG], [ - SPL_LINUX_CONFIG([PREEMPT], - AC_MSG_ERROR([ - *** Kernel built with CONFIG_PREEMPT which is not supported. - ** You must rebuild your kernel without this option.]), []) -]) - -dnl # -dnl # Explicitly check for gawk, we require it for the the usermode -dnl # helper. For some reason the standard awk command does not -dnl # behave correctly when invoked from the usermode helper. -dnl # -AC_DEFUN([SPL_AC_GAWK], [ - AS_IF([test "x$AWK" != xgawk], [ - AC_MSG_ERROR([ - *** Required util gawk missing. Please install the required - *** gawk package for your distribution and try again.]) - ]) -]) - dnl # dnl # Default SPL user configuration dnl # -AC_DEFUN([SPL_AC_CONFIG_USER], [ - SPL_AC_GAWK -]) +AC_DEFUN([SPL_AC_CONFIG_USER], []) dnl # dnl # Check for rpm+rpmbuild to build RPM packages. If these tools -dnl # are missing it is non-fatal but you will not be able to build +dnl # are missing, it is non-fatal, but you will not be able to build dnl # RPM packages and will be warned if you try too. dnl # +dnl # By default, the generic spec file will be used because it requires +dnl # minimal dependencies. Distribution specific spec files can be +dnl # placed under the 'rpm/' directory and enabled using +dnl # the --with-spec= configure option. +dnl # AC_DEFUN([SPL_AC_RPM], [ RPM=rpm RPMBUILD=rpmbuild @@ -258,6 +221,25 @@ AC_DEFUN([SPL_AC_RPM], [ AC_MSG_RESULT([$HAVE_RPMBUILD]) ]) + RPM_DEFINE_COMMON='--define "$(DEBUG_SPL) 1" --define "$(DEBUG_KMEM) 1" --define "$(DEBUG_KMEM_TRACKING) 1"' + RPM_DEFINE_UTIL= + RPM_DEFINE_KMOD='--define "kernels $(LINUX_VERSION)"' + RPM_DEFINE_DKMS= + + SRPM_DEFINE_COMMON='--define "build_src_rpm 1"' + SRPM_DEFINE_UTIL= + SRPM_DEFINE_KMOD= + SRPM_DEFINE_DKMS= + + RPM_SPEC_DIR="rpm/generic" + AC_ARG_WITH([spec], + AS_HELP_STRING([--with-spec=SPEC], + [Spec files 'generic|redhat']), + [RPM_SPEC_DIR="rpm/$withval"]) + + AC_MSG_CHECKING([whether spec files are available]) + AC_MSG_RESULT([yes ($RPM_SPEC_DIR/*.spec.in)]) + AC_SUBST(HAVE_RPM) AC_SUBST(RPM) AC_SUBST(RPM_VERSION) @@ -265,6 +247,16 @@ AC_DEFUN([SPL_AC_RPM], [ AC_SUBST(HAVE_RPMBUILD) AC_SUBST(RPMBUILD) AC_SUBST(RPMBUILD_VERSION) + + AC_SUBST(RPM_SPEC_DIR) + AC_SUBST(RPM_DEFINE_UTIL) + AC_SUBST(RPM_DEFINE_KMOD) + AC_SUBST(RPM_DEFINE_DKMS) + AC_SUBST(RPM_DEFINE_COMMON) + AC_SUBST(SRPM_DEFINE_UTIL) + AC_SUBST(SRPM_DEFINE_KMOD) + AC_SUBST(SRPM_DEFINE_DKMS) + AC_SUBST(SRPM_DEFINE_COMMON) ]) dnl # @@ -336,20 +328,26 @@ dnl # package type for 'make pkg': (rpm | deb | tgz) dnl # AC_DEFUN([SPL_AC_DEFAULT_PACKAGE], [ AC_MSG_CHECKING([linux distribution]) - if test -f /etc/redhat-release ; then - VENDOR=redhat ; + if test -f /etc/toss-release ; then + VENDOR=toss ; elif test -f /etc/fedora-release ; then VENDOR=fedora ; - elif test -f /etc/lsb-release ; then - VENDOR=ubuntu ; - elif test -f /etc/debian_version ; then - VENDOR=debian ; + elif test -f /etc/redhat-release ; then + VENDOR=redhat ; + elif test -f /etc/gentoo-release ; then + VENDOR=gentoo ; + elif test -f /etc/arch-release ; then + VENDOR=arch ; elif test -f /etc/SuSE-release ; then VENDOR=sles ; elif test -f /etc/slackware-version ; then VENDOR=slackware ; - elif test -f /etc/gentoo-release ; then - VENDOR=gentoo ; + elif test -f /etc/lunar.release ; then + VENDOR=lunar ; + elif test -f /etc/lsb-release ; then + VENDOR=ubuntu ; + elif test -f /etc/debian_version ; then + VENDOR=debian ; else VENDOR= ; fi @@ -358,13 +356,17 @@ AC_DEFUN([SPL_AC_DEFAULT_PACKAGE], [ AC_MSG_CHECKING([default package type]) case "$VENDOR" in - fedora) DEFAULT_PACKAGE=rpm ;; - redhat) DEFAULT_PACKAGE=rpm ;; - sles) DEFAULT_PACKAGE=rpm ;; - ubuntu) DEFAULT_PACKAGE=deb ;; - debian) DEFAULT_PACKAGE=deb ;; - slackware) DEFAULT_PACKAGE=tgz ;; - *) DEFAULT_PACKAGE=rpm ;; + 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([$DEFAULT_PACKAGE]) @@ -375,49 +377,53 @@ dnl # dnl # Default SPL user configuration dnl # AC_DEFUN([SPL_AC_PACKAGE], [ + SPL_AC_DEFAULT_PACKAGE SPL_AC_RPM SPL_AC_DPKG SPL_AC_ALIEN - SPL_AC_DEFAULT_PACKAGE ]) AC_DEFUN([SPL_AC_LICENSE], [ + AC_MSG_CHECKING([spl author]) + AC_MSG_RESULT([$SPL_META_AUTHOR]) + AC_MSG_CHECKING([spl license]) - LICENSE=GPL - AC_MSG_RESULT([$LICENSE]) - KERNELCPPFLAGS="${KERNELCPPFLAGS} -DHAVE_GPL_ONLY_SYMBOLS" - AC_SUBST(LICENSE) + AC_MSG_RESULT([$SPL_META_LICENSE]) ]) AC_DEFUN([SPL_AC_CONFIG], [ - SPL_CONFIG=all - AC_ARG_WITH([config], - AS_HELP_STRING([--with-config=CONFIG], - [Config file 'kernel|user|all|srpm']), - [SPL_CONFIG="$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 ;; + 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 "$SPL_CONFIG" = user] || - [test "$SPL_CONFIG" = all]) - AM_CONDITIONAL([CONFIG_KERNEL], - [test "$SPL_CONFIG" = kernel] || - [test "$SPL_CONFIG" = all]) + *) + 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 # @@ -436,13 +442,15 @@ AC_DEFUN([SPL_AC_DEBUG], [ [ KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG -Werror" DEBUG_CFLAGS="-DDEBUG -Werror" - ], - [ + DEBUG_SPL="_with_debug" + ], [ KERNELCPPFLAGS="${KERNELCPPFLAGS} -DNDEBUG" DEBUG_CFLAGS="-DNDEBUG" + DEBUG_SPL="_without_debug" ]) AC_SUBST(DEBUG_CFLAGS) + AC_SUBST(DEBUG_SPL) AC_MSG_RESULT([$enable_debug]) ]) @@ -450,21 +458,26 @@ dnl # dnl # Enabled by default it provides a minimal level of memory tracking. dnl # A total count of bytes allocated is kept for each alloc and free. dnl # Then at module unload time a report to the console will be printed -dnl # if memory was leaked. Additionally, /proc/spl/kmem/slab will exist -dnl # and provide an easy way to inspect the kmem based slab. +dnl # if memory was leaked. dnl # AC_DEFUN([SPL_AC_DEBUG_KMEM], [ AC_ARG_ENABLE([debug-kmem], [AS_HELP_STRING([--enable-debug-kmem], - [Enable basic kmem accounting @<:@default=yes@:>@])], + [Enable basic kmem accounting @<:@default=no@:>@])], [], - [enable_debug_kmem=yes]) + [enable_debug_kmem=no]) AS_IF([test "x$enable_debug_kmem" = xyes], - [AC_DEFINE([DEBUG_KMEM], [1], + [ + KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG_KMEM" + DEBUG_KMEM="_with_debug_kmem" + AC_DEFINE([DEBUG_KMEM], [1], [Define to 1 to enable basic kmem accounting]) - KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG_KMEM"]) + ], [ + DEBUG_KMEM="_without_debug_kmem" + ]) + AC_SUBST(DEBUG_KMEM) AC_MSG_CHECKING([whether basic kmem accounting is enabled]) AC_MSG_RESULT([$enable_debug_kmem]) ]) @@ -486,10 +499,16 @@ AC_DEFUN([SPL_AC_DEBUG_KMEM_TRACKING], [ [enable_debug_kmem_tracking=no]) AS_IF([test "x$enable_debug_kmem_tracking" = xyes], - [AC_DEFINE([DEBUG_KMEM_TRACKING], [1], + [ + KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG_KMEM_TRACKING" + DEBUG_KMEM_TRACKING="_with_debug_kmem_tracking" + AC_DEFINE([DEBUG_KMEM_TRACKING], [1], [Define to 1 to enable detailed kmem tracking]) - KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG_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]) ]) @@ -524,12 +543,14 @@ 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 ]) @@ -545,34 +566,11 @@ 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:]]]' \ $LINUX_OBJ/Module*.symvers 2>/dev/null rc=$? @@ -582,21 +580,63 @@ 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 + $4 fi ]) @@ -620,6 +660,41 @@ AC_DEFUN([SPL_CHECK_HEADER], ]) ]) +dnl # +dnl # Basic toolchain sanity check. Verify that kernel modules can +dnl # be built and which symbols can be used. +dnl # +AC_DEFUN([SPL_AC_TEST_MODULE], + [AC_MSG_CHECKING([whether modules can be built]) + SPL_LINUX_TRY_COMPILE([],[],[ + AC_MSG_RESULT([yes]) + ],[ + AC_MSG_RESULT([no]) + if test "x$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 + ]) + + AS_IF([test "x$cross_compiling" != xyes], [ + AC_RUN_IFELSE([ + AC_LANG_PROGRAM([ + #include "$LINUX/include/linux/license.h" + ], [ + return !license_is_gpl_compatible( + "$SPL_META_LICENSE"); + ]) + ], [ + AC_DEFINE([SPL_IS_GPL_COMPATIBLE], [1], + [Define to 1 if GPL-only symbols can be used]) + ], [ + ]) + ]) +]) + dnl # dnl # Use the atomic implemenation based on global spinlocks. This dnl # should only be needed by 32-bit kernels which do not provide @@ -636,7 +711,7 @@ AC_DEFUN([SPL_AC_ATOMIC_SPINLOCK], [ [enable_atomic_spinlocks=check]) SPL_LINUX_TRY_COMPILE([ - #include + #include ],[ atomic64_t *ptr __attribute__ ((unused)); ],[ @@ -672,134 +747,18 @@ AC_DEFUN([SPL_AC_ATOMIC_SPINLOCK], [ AC_MSG_RESULT([$have_atomic64_t]) ]) -dnl # -dnl # 2.6.24 API change, -dnl # check if atomic64_cmpxchg is defined -dnl # -AC_DEFUN([SPL_AC_TYPE_ATOMIC64_CMPXCHG], - [AC_MSG_CHECKING([whether kernel defines atomic64_cmpxchg]) - SPL_LINUX_TRY_COMPILE([ - #include - #include - ],[ - atomic64_cmpxchg((atomic64_t *)NULL, 0, 0); - ],[ - AC_MSG_RESULT([yes]) - AC_DEFINE(HAVE_ATOMIC64_CMPXCHG, 1, - [kernel defines atomic64_cmpxchg]) - ],[ - AC_MSG_RESULT([no]) - ]) -]) - -dnl # -dnl # 2.6.24 API change, -dnl # check if atomic64_xchg is defined -dnl # -AC_DEFUN([SPL_AC_TYPE_ATOMIC64_XCHG], - [AC_MSG_CHECKING([whether kernel defines atomic64_xchg]) - SPL_LINUX_TRY_COMPILE([ - #include - ],[ - atomic64_xchg((atomic64_t *)NULL, 0); - ],[ - AC_MSG_RESULT([yes]) - AC_DEFINE(HAVE_ATOMIC64_XCHG, 1, - [kernel defines atomic64_xchg]) - ],[ - AC_MSG_RESULT([no]) - ]) -]) - -dnl # -dnl # 2.6.24 API change, -dnl # check if uintptr_t typedef is defined -dnl # -AC_DEFUN([SPL_AC_TYPE_UINTPTR_T], - [AC_MSG_CHECKING([whether kernel defines uintptr_t]) - SPL_LINUX_TRY_COMPILE([ - #include - ],[ - uintptr_t *ptr __attribute__ ((unused)); - ],[ - AC_MSG_RESULT([yes]) - AC_DEFINE(HAVE_UINTPTR_T, 1, - [kernel defines uintptr_t]) - ],[ - AC_MSG_RESULT([no]) - ]) -]) - -dnl # -dnl # 2.6.20 API change, -dnl # INIT_WORK use 2 args and not store data inside -dnl # -AC_DEFUN([SPL_AC_3ARGS_INIT_WORK], - [AC_MSG_CHECKING([whether INIT_WORK wants 3 args]) - SPL_LINUX_TRY_COMPILE([ - #include - ],[ - struct work_struct work __attribute__ ((unused)); - INIT_WORK(&work, NULL, NULL); - ],[ - AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_3ARGS_INIT_WORK, 1, - [INIT_WORK wants 3 args]) - ],[ - AC_MSG_RESULT(no) - ]) -]) - -dnl # -dnl # 2.6.21 API change, -dnl # 'register_sysctl_table' use only one argument instead of two -dnl # -AC_DEFUN([SPL_AC_2ARGS_REGISTER_SYSCTL], - [AC_MSG_CHECKING([whether register_sysctl_table() wants 2 args]) - SPL_LINUX_TRY_COMPILE([ - #include - ],[ - (void) register_sysctl_table(NULL, 0); - ],[ - AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_2ARGS_REGISTER_SYSCTL, 1, - [register_sysctl_table() wants 2 args]) - ],[ - AC_MSG_RESULT(no) - ]) -]) - -dnl # -dnl # 2.6.23 API change -dnl # Old set_shrinker API replaced with register_shrinker -dnl # -AC_DEFUN([SPL_AC_SET_SHRINKER], [ - AC_MSG_CHECKING([whether set_shrinker() available]) - SPL_LINUX_TRY_COMPILE([ - #include - ],[ - return set_shrinker(DEFAULT_SEEKS, NULL); - ],[ - AC_MSG_RESULT([yes]) - AC_DEFINE(HAVE_SET_SHRINKER, 1, - [set_shrinker() available]) - ],[ - AC_MSG_RESULT([no]) - ]) -]) - -dnl # -dnl # 2.6.35 API change, -dnl # Add context to shrinker callback -dnl # -AC_DEFUN([SPL_AC_3ARGS_SHRINKER_CALLBACK], - [AC_MSG_CHECKING([whether shrinker callback wants 3 args]) +AC_DEFUN([SPL_AC_SHRINKER_CALLBACK],[ tmp_flags="$EXTRA_KCFLAGS" EXTRA_KCFLAGS="-Werror" + dnl # + dnl # 2.6.23 to 2.6.34 API change + dnl # ->shrink(int nr_to_scan, gfp_t gfp_mask) + dnl # + AC_MSG_CHECKING([whether old 2-argument shrinker exists]) SPL_LINUX_TRY_COMPILE([ #include - int shrinker_cb(struct shrinker *, int, unsigned int); + int shrinker_cb(int nr_to_scan, gfp_t gfp_mask); ],[ struct shrinker cache_shrinker = { .shrink = shrinker_cb, @@ -808,66 +767,90 @@ AC_DEFUN([SPL_AC_3ARGS_SHRINKER_CALLBACK], register_shrinker(&cache_shrinker); ],[ AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_3ARGS_SHRINKER_CALLBACK, 1, - [shrinker callback wants 3 args]) + AC_DEFINE(HAVE_2ARGS_OLD_SHRINKER_CALLBACK, 1, + [old shrinker callback wants 2 args]) ],[ AC_MSG_RESULT(no) + dnl # + dnl # 2.6.35 - 2.6.39 API change + dnl # ->shrink(struct shrinker *, + dnl # int nr_to_scan, gfp_t gfp_mask) + dnl # + AC_MSG_CHECKING([whether old 3-argument shrinker exists]) + SPL_LINUX_TRY_COMPILE([ + #include + + 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 # -dnl # 2.6.25 API change, -dnl # struct path entry added to struct nameidata -dnl # -AC_DEFUN([SPL_AC_PATH_IN_NAMEIDATA], - [AC_MSG_CHECKING([whether struct path used in struct nameidata]) - SPL_LINUX_TRY_COMPILE([ - #include - ],[ - struct nameidata nd __attribute__ ((unused)); - - nd.path.mnt = NULL; - nd.path.dentry = NULL; - ],[ - AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_PATH_IN_NAMEIDATA, 1, - [struct path used in struct nameidata]) - ],[ - AC_MSG_RESULT(no) - ]) -]) - -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])], - []) -]) - -dnl # -dnl # 2.6.19 API change, -dnl # Use CTL_UNNUMBERED when binary sysctl is not required -dnl # -AC_DEFUN([SPL_AC_CTL_UNNUMBERED], - [AC_MSG_CHECKING([whether unnumbered sysctl support exists]) - SPL_LINUX_TRY_COMPILE([ - #include - ],[ - #ifndef CTL_UNNUMBERED - #error CTL_UNNUMBERED undefined - #endif - ],[ - AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_CTL_UNNUMBERED, 1, - [unnumbered sysctl support exists]) - ],[ - AC_MSG_RESULT(no) - ]) -]) - dnl # dnl # 2.6.33 API change, dnl # Removed .ctl_name from struct ctl_table. @@ -888,900 +871,729 @@ AC_DEFUN([SPL_AC_CTL_NAME], [ ]) dnl # -dnl # 2.6.16 API change. -dnl # Check if 'fls64()' is available +dnl # 3.10 API change, +dnl # PDE is replaced by PDE_DATA dnl # -AC_DEFUN([SPL_AC_FLS64], - [AC_MSG_CHECKING([whether fls64() is available]) - SPL_LINUX_TRY_COMPILE([ - #include - ],[ - return fls64(0); - ],[ +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_FLS64, 1, [fls64() is available]) + AC_DEFINE(HAVE_PDE_DATA, 1, [yes]) ],[ AC_MSG_RESULT(no) ]) ]) dnl # -dnl # 2.6.18 API change, check whether device_create() is available. -dnl # Device_create() was introduced in 2.6.18 and depricated -dnl # class_device_create() which was fully removed in 2.6.26. -dnl # -AC_DEFUN([SPL_AC_DEVICE_CREATE], [ - SPL_CHECK_SYMBOL_EXPORT( - [device_create], - [drivers/base/core.c], - [AC_DEFINE(HAVE_DEVICE_CREATE, 1, - [device_create() is available])], - []) -]) - +dnl # 3.9 API change +dnl # set_fs_pwd takes const struct path * dnl # -dnl # 2.6.27 API change, -dnl # device_create() uses 5 args, new 'drvdata' argument. -dnl # -AC_DEFUN([SPL_AC_5ARGS_DEVICE_CREATE], [ - AC_MSG_CHECKING([whether device_create() wants 5 args]) +AC_DEFUN([SPL_AC_SET_FS_PWD_WITH_CONST], tmp_flags="$EXTRA_KCFLAGS" EXTRA_KCFLAGS="-Werror" + [AC_MSG_CHECKING([whether set_fs_pwd() requires const struct path *]) SPL_LINUX_TRY_COMPILE([ - #include + #include + #include + #include + void (*const set_fs_pwd_func) + (struct fs_struct *, const struct path *) + = set_fs_pwd; ],[ - device_create(NULL, NULL, 0, NULL, "%d", 1); + return 0; ],[ AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_5ARGS_DEVICE_CREATE, 1, - [device_create wants 5 args]) - ],[ - AC_MSG_RESULT(no) + AC_DEFINE(HAVE_SET_FS_PWD_WITH_CONST, 1, + [set_fs_pwd() needs const path *]) + ],[ + SPL_LINUX_TRY_COMPILE([ + #include + #include + #include + void (*const set_fs_pwd_func) + (struct fs_struct *, struct path *) + = set_fs_pwd; + ],[ + return 0; + ],[ + AC_MSG_RESULT(no) + ],[ + AC_MSG_ERROR(unknown) + ]) ]) EXTRA_KCFLAGS="$tmp_flags" ]) dnl # -dnl # 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 # 3.13 API change +dnl # vfs_unlink() updated to take a third delegated_inode argument. 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 # -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])], - []) -]) - -dnl # -dnl # 2.6.16 API change, set_normalize_timespec() moved to time.c -dnl # previously it was available in time.h as an inline. -dnl # -AC_DEFUN([SPL_AC_SET_NORMALIZED_TIMESPEC_INLINE], [ - AC_MSG_CHECKING([whether set_normalized_timespec() is an inline]) +AC_DEFUN([SPL_AC_2ARGS_VFS_UNLINK], + [AC_MSG_CHECKING([whether vfs_unlink() wants 2 args]) SPL_LINUX_TRY_COMPILE([ - #include - void set_normalized_timespec(struct timespec *ts, - time_t sec, long nsec) { } - ], - [], - [ - AC_MSG_RESULT(no) + #include + ],[ + vfs_unlink((struct inode *) NULL, (struct dentry *) NULL); ],[ AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_SET_NORMALIZED_TIMESPEC_INLINE, 1, - [set_normalized_timespec() is available as inline]) + 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 # 2.6.18 API change, -dnl # timespec_sub() inline function available in linux/time.h +dnl # 3.13 and 3.15 API changes +dnl # Added delegated inode and flags argument. dnl # -AC_DEFUN([SPL_AC_TIMESPEC_SUB], [ - AC_MSG_CHECKING([whether timespec_sub() is available]) +AC_DEFUN([SPL_AC_4ARGS_VFS_RENAME], + [AC_MSG_CHECKING([whether vfs_rename() wants 4 args]) SPL_LINUX_TRY_COMPILE([ - #include + #include ],[ - struct timespec a = { 0 }; - struct timespec b = { 0 }; - struct timespec c __attribute__ ((unused)); - c = timespec_sub(a, b); + vfs_rename((struct inode *) NULL, (struct dentry *) NULL, + (struct inode *) NULL, (struct dentry *) NULL); ],[ AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_TIMESPEC_SUB, 1, [timespec_sub() is available]) + AC_DEFINE(HAVE_4ARGS_VFS_RENAME, 1, + [vfs_rename() wants 4 args]) ],[ AC_MSG_RESULT(no) + dnl # + dnl # Linux 3.13 API change + dnl # Added delegated inode + dnl # + AC_MSG_CHECKING([whether vfs_rename() wants 5 args]) + SPL_LINUX_TRY_COMPILE([ + #include + ],[ + 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 # 2.6.19 API change, -dnl # check if init_utsname() is available in linux/utsname.h +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_INIT_UTSNAME], [ - AC_MSG_CHECKING([whether init_utsname() is available]) +AC_DEFUN([SPL_AC_FS_STRUCT_SPINLOCK], [ + AC_MSG_CHECKING([whether struct fs_struct uses spinlock_t]) + tmp_flags="$EXTRA_KCFLAGS" + EXTRA_KCFLAGS="-Werror" SPL_LINUX_TRY_COMPILE([ - #include + #include + #include ],[ - struct new_utsname *a __attribute__ ((unused)); - a = init_utsname(); + static struct fs_struct fs; + spin_lock_init(&fs.lock); ],[ AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_INIT_UTSNAME, 1, [init_utsname() is available]) + AC_DEFINE(HAVE_FS_STRUCT_SPINLOCK, 1, + [struct fs_struct uses spinlock_t]) ],[ AC_MSG_RESULT(no) ]) + EXTRA_KCFLAGS="$tmp_flags" ]) dnl # -dnl # 2.6.26 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 # 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_FILES_FDTABLE], [ - AC_MSG_CHECKING([whether files_fdtable() is available]) +AC_DEFUN([SPL_AC_KUIDGID_T], [ + AC_MSG_CHECKING([whether kuid_t/kgid_t is available]) SPL_LINUX_TRY_COMPILE([ - #include - #include - #ifdef HAVE_FDTABLE_HEADER - #include - #endif - ],[ - struct files_struct *files = current->files; - struct fdtable *fdt __attribute__ ((unused)); - fdt = files_fdtable(files); - ],[ - AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_FILES_FDTABLE, 1, [files_fdtable() is available]) + #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 # 2.6.18 API change, -dnl # added linux/uaccess.h +dnl # 2.6.39 API change, +dnl # __put_task_struct() was exported by the mainline kernel. dnl # -AC_DEFUN([SPL_AC_UACCESS_HEADER], [ - SPL_CHECK_HEADER([linux/uaccess.h], [UACCESS], [], []) +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 # 2.6.12 API change, -dnl # check whether 'kmalloc_node()' is available. +dnl # 2.6.35 API change, +dnl # Unused 'struct dentry *' removed from vfs_fsync() prototype. dnl # -AC_DEFUN([SPL_AC_KMALLOC_NODE], [ - AC_MSG_CHECKING([whether kmalloc_node() is available]) +AC_DEFUN([SPL_AC_2ARGS_VFS_FSYNC], [ + AC_MSG_CHECKING([whether vfs_fsync() wants 2 args]) SPL_LINUX_TRY_COMPILE([ - #include + #include ],[ - void *a __attribute__ ((unused)); - a = kmalloc_node(1, GFP_KERNEL, 0); + vfs_fsync(NULL, 0); ],[ AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_KMALLOC_NODE, 1, [kmalloc_node() is available]) + AC_DEFINE(HAVE_2ARGS_VFS_FSYNC, 1, [vfs_fsync() wants 2 args]) ],[ AC_MSG_RESULT(no) ]) ]) dnl # -dnl # 2.6.9 API change, -dnl # check whether 'monotonic_clock()' is available it may -dnl # be available for some archs but not others. -dnl # -AC_DEFUN([SPL_AC_MONOTONIC_CLOCK], [ - SPL_CHECK_SYMBOL_EXPORT( - [monotonic_clock], - [], - [AC_DEFINE(HAVE_MONOTONIC_CLOCK, 1, - [monotonic_clock() is available])], - []) -]) - -dnl # -dnl # 2.6.16 API change, -dnl # check whether 'struct inode' has i_mutex +dnl # 3.5 API change, +dnl # inode_operations.truncate_range removed dnl # -AC_DEFUN([SPL_AC_INODE_I_MUTEX], [ - AC_MSG_CHECKING([whether struct inode has i_mutex]) +AC_DEFUN([SPL_AC_INODE_TRUNCATE_RANGE], [ + AC_MSG_CHECKING([whether truncate_range() inode operation is available]) SPL_LINUX_TRY_COMPILE([ #include - #include ],[ - struct inode i; - mutex_init(&i.i_mutex); + struct inode_operations ops; + ops.truncate_range = NULL; ],[ AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_INODE_I_MUTEX, 1, [struct inode has i_mutex]) + AC_DEFINE(HAVE_INODE_TRUNCATE_RANGE, 1, + [truncate_range() inode operation is available]) ],[ AC_MSG_RESULT(no) ]) ]) dnl # -dnl # 2.6.29 API change, -dnl # Adaptive mutexs introduced. +dnl # Linux 2.6.38 - 3.x API dnl # -AC_DEFUN([SPL_AC_MUTEX_OWNER], [ - AC_MSG_CHECKING([whether struct mutex has owner]) +AC_DEFUN([SPL_AC_KERNEL_FILE_FALLOCATE], [ + AC_MSG_CHECKING([whether fops->fallocate() exists]) SPL_LINUX_TRY_COMPILE([ - #include + #include ],[ - struct mutex mtx __attribute__ ((unused)); - mtx.owner = NULL; + 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_MUTEX_OWNER, 1, [struct mutex has owner]) + AC_DEFINE(HAVE_FILE_FALLOCATE, 1, [fops->fallocate() exists]) ],[ AC_MSG_RESULT(no) ]) ]) dnl # -dnl # 2.6.18 API change, -dnl # First introduced 'mutex_lock_nested()' in include/linux/mutex.h, -dnl # as part of the mutex validator. Fallback to using 'mutex_lock()' -dnl # if the mutex validator is disabled or otherwise unavailable. +dnl # Linux 2.6.x - 2.6.37 API dnl # -AC_DEFUN([SPL_AC_MUTEX_LOCK_NESTED], [ - AC_MSG_CHECKING([whether mutex_lock_nested() is available]) +AC_DEFUN([SPL_AC_KERNEL_INODE_FALLOCATE], [ + AC_MSG_CHECKING([whether iops->fallocate() exists]) SPL_LINUX_TRY_COMPILE([ - #include + #include ],[ - struct mutex mutex; - mutex_init(&mutex); - mutex_lock_nested(&mutex, 0); + 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_MUTEX_LOCK_NESTED, 1, - [mutex_lock_nested() is available]) + AC_DEFINE(HAVE_INODE_FALLOCATE, 1, [fops->fallocate() exists]) ],[ AC_MSG_RESULT(no) ]) ]) dnl # -dnl # 2.6.27 API change, -dnl # on_each_cpu() uses 3 args, no 'retry' argument +dnl # PaX Linux 2.6.38 - 3.x API dnl # -AC_DEFUN([SPL_AC_3ARGS_ON_EACH_CPU], [ - AC_MSG_CHECKING([whether on_each_cpu() wants 3 args]) +AC_DEFUN([SPL_AC_PAX_KERNEL_FILE_FALLOCATE], [ + AC_MSG_CHECKING([whether fops->fallocate() exists]) SPL_LINUX_TRY_COMPILE([ - #include + #include ],[ - on_each_cpu(NULL, NULL, 0); + long (*fallocate) (struct file *, int, loff_t, loff_t) = NULL; + struct file_operations_no_const fops __attribute__ ((unused)) = { + .fallocate = fallocate, + }; ],[ AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_3ARGS_ON_EACH_CPU, 1, - [on_each_cpu wants 3 args]) + AC_DEFINE(HAVE_FILE_FALLOCATE, 1, [fops->fallocate() exists]) ],[ AC_MSG_RESULT(no) ]) ]) dnl # -dnl # 2.6.18 API change, -dnl # kallsyms_lookup_name no longer exported +dnl # The fallocate callback was moved from the inode_operations +dnl # structure to the file_operations structure. 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_KERNEL_FALLOCATE], [ + SPL_AC_KERNEL_FILE_FALLOCATE + SPL_AC_KERNEL_INODE_FALLOCATE + SPL_AC_PAX_KERNEL_FILE_FALLOCATE ]) 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 # zlib inflate compat, +dnl # Verify the kernel has CONFIG_ZLIB_INFLATE support enabled. 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])], - []) -]) - -dnl # -dnl # 2.6.17 API change -dnl # The helper functions first_online_pgdat(), next_online_pgdat(), and -dnl # next_zone() are introduced to simplify for_each_zone(). These symbols -dnl # were exported in 2.6.17 for use by modules which was consistent with -dnl # the previous implementation of for_each_zone(). From 2.6.18 - 2.6.19 -dnl # the symbols were exported as 'unused', and by 2.6.20 they exports -dnl # were dropped entirely leaving modules no way to directly iterate over -dnl # the zone list. Because we need access to the zone helpers we check -dnl # if the kernel contains the old or new implementation. Then we check -dnl # to see if the symbols we need for each version are available. If they -dnl # are not, dynamically aquire the addresses with kallsyms_lookup_name(). -dnl # -AC_DEFUN([SPL_AC_PGDAT_HELPERS], [ - AC_MSG_CHECKING([whether symbol *_pgdat exist]) - grep -q -E 'first_online_pgdat' $LINUX/include/linux/mmzone.h 2>/dev/null - rc=$? - if test $rc -eq 0; then +AC_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_DEFINE(HAVE_PGDAT_HELPERS, 1, [pgdat helpers are available]) - else + ],[ AC_MSG_RESULT([no]) - fi -]) - -dnl # -dnl # Proposed API change, -dnl # This symbol is not available in stock kernels. You may build a -dnl # custom kernel with the *-spl-export-symbols.patch which will export -dnl # these symbols for use. If your already rolling a custom kernel for -dnl # your environment this is recommended. -dnl # -AC_DEFUN([SPL_AC_FIRST_ONLINE_PGDAT], [ - SPL_CHECK_SYMBOL_EXPORT( - [first_online_pgdat], - [], - [AC_DEFINE(HAVE_FIRST_ONLINE_PGDAT, 1, - [first_online_pgdat() 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_NEXT_ONLINE_PGDAT], [ - SPL_CHECK_SYMBOL_EXPORT( - [next_online_pgdat], - [], - [AC_DEFINE(HAVE_NEXT_ONLINE_PGDAT, 1, - [next_online_pgdat() 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_NEXT_ZONE], [ - SPL_CHECK_SYMBOL_EXPORT( - [next_zone], - [], - [AC_DEFINE(HAVE_NEXT_ZONE, 1, - [next_zone() is available])], - []) -]) - -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_MSG_ERROR([ + *** This kernel does not include the required zlib inflate support. + *** Rebuild the kernel with CONFIG_ZLIB_INFLATE=y|m set.]) + ]) ]) dnl # -dnl # 2.6.18 API change, -dnl # First introduced global_page_state() support as an inline. +dnl # zlib deflate compat, +dnl # Verify the kernel has CONFIG_ZLIB_DEFLATE support enabled. dnl # -AC_DEFUN([SPL_AC_GLOBAL_PAGE_STATE], [ - AC_MSG_CHECKING([whether global_page_state() is available]) +AC_DEFUN([SPL_AC_CONFIG_ZLIB_DEFLATE], [ + AC_MSG_CHECKING([whether CONFIG_ZLIB_DEFLATE is defined]) SPL_LINUX_TRY_COMPILE([ - #include - ],[ - unsigned long state __attribute__ ((unused)); - state = global_page_state(0); - ],[ - AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_GLOBAL_PAGE_STATE, 1, - [global_page_state() is available]) + #if !defined(CONFIG_ZLIB_DEFLATE) && \ + !defined(CONFIG_ZLIB_DEFLATE_MODULE) + #error CONFIG_ZLIB_DEFLATE not defined + #endif + ],[ ],[ + AC_MSG_RESULT([yes]) ],[ - AC_MSG_RESULT(no) + AC_MSG_RESULT([no]) + AC_MSG_ERROR([ + *** This kernel does not include the required zlib deflate support. + *** Rebuild the kernel with CONFIG_ZLIB_DEFLATE=y|m set.]) ]) ]) dnl # -dnl # 2.6.21 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 # config trim unused symbols, +dnl # Verify the kernel has CONFIG_TRIM_UNUSED_KSYMS DISABLED. 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_FREE], [ - AC_MSG_CHECKING([whether page state NR_FREE_PAGES is available]) +AC_DEFUN([SPL_AC_CONFIG_TRIM_UNUSED_KSYMS], [ + AC_MSG_CHECKING([whether CONFIG_TRIM_UNUSED_KSYM is disabled]) SPL_LINUX_TRY_COMPILE([ - #include - ],[ - 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]) + #if defined(CONFIG_TRIM_UNUSED_KSYMS) + #error CONFIG_TRIM_UNUSED_KSYMS not defined + #endif + ],[ ],[ + AC_MSG_RESULT([yes]) ],[ - AC_MSG_RESULT(no) + AC_MSG_RESULT([no]) + AC_MSG_ERROR([ + *** This kernel has unused symbols trimming enabled, please disable. + *** Rebuild the kernel with CONFIG_TRIM_UNUSED_KSYMS=n set.]) ]) ]) 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 # 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_ZONE_STAT_ITEM_INACTIVE], [ - AC_MSG_CHECKING([whether page state NR_INACTIVE is available]) +AC_DEFUN([SPL_AC_2ARGS_ZLIB_DEFLATE_WORKSPACESIZE], + [AC_MSG_CHECKING([whether zlib_deflate_workspacesize() wants 2 args]) SPL_LINUX_TRY_COMPILE([ - #include + #include ],[ - enum zone_stat_item zsi __attribute__ ((unused)); - zsi = NR_INACTIVE; + return zlib_deflate_workspacesize(MAX_WBITS, MAX_MEM_LEVEL); ],[ AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_INACTIVE, 1, - [Page state NR_INACTIVE is available]) + AC_DEFINE(HAVE_2ARGS_ZLIB_DEFLATE_WORKSPACESIZE, 1, + [zlib_deflate_workspacesize() wants 2 args]) ],[ AC_MSG_RESULT(no) ]) +]) - AC_MSG_CHECKING([whether page state NR_INACTIVE_ANON is available]) +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 ],[ - 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) - ]) + struct shrink_control sc __attribute__ ((unused)); - AC_MSG_CHECKING([whether page state NR_INACTIVE_FILE is available]) - SPL_LINUX_TRY_COMPILE([ - #include - ],[ - enum zone_stat_item zsi __attribute__ ((unused)); - zsi = NR_INACTIVE_FILE; + sc.nr_to_scan = 0; + sc.gfp_mask = GFP_KERNEL; ],[ AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_INACTIVE_FILE, 1, - [Page state NR_INACTIVE_FILE is available]) + AC_DEFINE(HAVE_SHRINK_CONTROL_STRUCT, 1, + [struct shrink_control exists]) ],[ 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 # 3.1 API Change 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 # The rw_semaphore.wait_lock member was changed from spinlock_t to +dnl # raw_spinlock_t at commit ddb6c9b58a19edcfac93ac670b066c836ff729f1. dnl # -AC_DEFUN([SPL_AC_ZONE_STAT_ITEM_ACTIVE], [ - AC_MSG_CHECKING([whether page state NR_ACTIVE is available]) - SPL_LINUX_TRY_COMPILE([ - #include - ],[ - 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]) +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 + #include ],[ - enum zone_stat_item zsi __attribute__ ((unused)); - zsi = NR_ACTIVE_ANON; + struct rw_semaphore dummy_semaphore __attribute__ ((unused)); + raw_spinlock_t dummy_lock __attribute__ ((unused)); + dummy_semaphore.wait_lock = dummy_lock; ],[ AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_ACTIVE_ANON, 1, - [Page state NR_ACTIVE_ANON is available]) + AC_DEFINE(RWSEM_SPINLOCK_IS_RAW, 1, + [struct rw_semaphore member wait_lock is raw_spinlock_t]) ],[ AC_MSG_RESULT(no) ]) + EXTRA_KCFLAGS="$tmp_flags" +]) - AC_MSG_CHECKING([whether page state NR_ACTIVE_FILE is available]) +dnl # +dnl # 3.16 API Change +dnl # +dnl # rwsem-spinlock "->activity" changed to "->count" +dnl # +AC_DEFUN([SPL_AC_RWSEM_ACTIVITY], [ + AC_MSG_CHECKING([whether struct rw_semaphore has member activity]) + tmp_flags="$EXTRA_KCFLAGS" + EXTRA_KCFLAGS="-Werror" SPL_LINUX_TRY_COMPILE([ - #include + #include ],[ - enum zone_stat_item zsi __attribute__ ((unused)); - zsi = NR_ACTIVE_FILE; + struct rw_semaphore dummy_semaphore __attribute__ ((unused)); + dummy_semaphore.activity = 0; ],[ AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_ACTIVE_FILE, 1, - [Page state NR_ACTIVE_FILE is available]) + AC_DEFINE(HAVE_RWSEM_ACTIVITY, 1, + [struct rw_semaphore has member activity]) ],[ AC_MSG_RESULT(no) ]) + EXTRA_KCFLAGS="$tmp_flags" ]) dnl # -dnl # Proposed API change for legacy kernels. -dnl # This symbol is not available in older kernels. For kernels post -dnl # 2.6.21 the global_page_state() API is used to get free/inactive/active -dnl # page state information. This symbol is only used in legacy kernels -dnl # any only as a last resort. -dnl -AC_DEFUN([SPL_AC_GET_ZONE_COUNTS], [ - AC_MSG_CHECKING([whether symbol get_zone_counts is needed]) +dnl # 4.8 API Change +dnl # +dnl # rwsem "->count" changed to atomic_long_t type +dnl # +AC_DEFUN([SPL_AC_RWSEM_ATOMIC_LONG_COUNT], [ + AC_MSG_CHECKING( + [whether struct rw_semaphore has atomic_long_t member count]) + tmp_flags="$EXTRA_KCFLAGS" + EXTRA_KCFLAGS="-Werror" SPL_LINUX_TRY_COMPILE([ + #include ],[ - #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) + DECLARE_RWSEM(dummy_semaphore); + (void) atomic_long_read(&dummy_semaphore.count); ],[ AC_MSG_RESULT(yes) - 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_DEFINE(HAVE_RWSEM_ATOMIC_LONG_COUNT, 1, + [struct rw_semaphore has atomic_long_t member count]) + ],[ + AC_MSG_RESULT(no) ]) + EXTRA_KCFLAGS="$tmp_flags" ]) dnl # -dnl # 2.6.27 API change, -dnl # The user_path_dir() replaces __user_walk() -dnl # -AC_DEFUN([SPL_AC_USER_PATH_DIR], [ - SPL_CHECK_SYMBOL_EXPORT( - [user_path_at], - [], - [AC_DEFINE(HAVE_USER_PATH_DIR, 1, - [user_path_dir() is available])], - []) -]) - -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])], - []) -]) - -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 # Moved things from linux/sched.h to linux/sched/rt.h dnl # -AC_DEFUN([SPL_AC_2ARGS_SET_FS_PWD], - [AC_MSG_CHECKING([whether set_fs_pwd() wants 2 args]) +AC_DEFUN([SPL_AC_SCHED_RT_HEADER], + [AC_MSG_CHECKING([whether header linux/sched/rt.h exists]) SPL_LINUX_TRY_COMPILE([ #include - #include + #include ],[ - set_fs_pwd(NULL, NULL); + return 0; ],[ + AC_DEFINE(HAVE_SCHED_RT_HEADER, 1, [linux/sched/rt.h exists]) AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_2ARGS_SET_FS_PWD, 1, - [set_fs_pwd() wants 2 args]) ],[ AC_MSG_RESULT(no) ]) ]) dnl # -dnl # SLES API change, never adopted in mainline, -dnl # Third 'struct vfsmount *' argument removed. +dnl # 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_UNLINK], - [AC_MSG_CHECKING([whether vfs_unlink() wants 2 args]) +AC_DEFUN([SPL_AC_2ARGS_VFS_GETATTR], [ + AC_MSG_CHECKING([whether vfs_getattr() wants]) SPL_LINUX_TRY_COMPILE([ #include ],[ - vfs_unlink(NULL, NULL); + vfs_getattr((struct path *) NULL, + (struct kstat *)NULL); ],[ - AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_2ARGS_VFS_UNLINK, 1, - [vfs_unlink() wants 2 args]) + AC_MSG_RESULT(2 args) + AC_DEFINE(HAVE_2ARGS_VFS_GETATTR, 1, + [vfs_getattr wants 2 args]) ],[ - AC_MSG_RESULT(no) + SPL_LINUX_TRY_COMPILE([ + #include + ],[ + vfs_getattr((struct vfsmount *)NULL, + (struct dentry *)NULL, + (struct kstat *)NULL); + ],[ + AC_MSG_RESULT(3 args) + ],[ + AC_MSG_ERROR(unknown) + ]) ]) ]) dnl # -dnl # SLES API change, never adopted in mainline, -dnl # Third and sixth 'struct vfsmount *' argument removed. +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_4ARGS_VFS_RENAME], - [AC_MSG_CHECKING([whether vfs_rename() wants 4 args]) +AC_DEFUN([SPL_AC_USLEEP_RANGE], [ + AC_MSG_CHECKING([whether usleep_range() is available]) SPL_LINUX_TRY_COMPILE([ - #include + #include ],[ - vfs_rename(NULL, NULL, NULL, NULL); + usleep_range(0, 0); ],[ AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_4ARGS_VFS_RENAME, 1, - [vfs_rename() wants 4 args]) + AC_DEFINE(HAVE_USLEEP_RANGE, 1, + [usleep_range is available]) ],[ 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 # 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_FS_STRUCT_SPINLOCK], [ - AC_MSG_CHECKING([whether struct fs_struct uses spinlock_t]) +AC_DEFUN([SPL_AC_KMEM_CACHE_ALLOCFLAGS], [ + AC_MSG_CHECKING([whether struct kmem_cache has allocflags]) SPL_LINUX_TRY_COMPILE([ - #include - #include + #include ],[ - struct fs_struct fs; - spin_lock_init(&fs.lock); + struct kmem_cache cachep __attribute__ ((unused)); + cachep.allocflags = GFP_KERNEL; ],[ AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_FS_STRUCT_SPINLOCK, 1, - [struct fs_struct uses spinlock_t]) + 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) + ]) ]) ]) dnl # -dnl # 2.6.29 API change, -dnl # check whether 'struct cred' exists +dnl # 3.17 API change, +dnl # wait_on_bit() no longer requires an action argument. The former +dnl # "wait_on_bit" interface required an 'action' function to be provided +dnl # which does the actual waiting. There were over 20 such functions in the +dnl # kernel, many of them identical, though most cases can be satisfied by one +dnl # of just two functions: one which uses io_schedule() and one which just +dnl # uses schedule(). This API change was made to consolidate all of those +dnl # redundant wait functions. dnl # -AC_DEFUN([SPL_AC_CRED_STRUCT], [ - AC_MSG_CHECKING([whether struct cred exists]) +AC_DEFUN([SPL_AC_WAIT_ON_BIT], [ + AC_MSG_CHECKING([whether wait_on_bit() takes an action]) SPL_LINUX_TRY_COMPILE([ - #include + #include ],[ - struct cred *cr __attribute__ ((unused)); - cr = NULL; + int (*action)(void *) = NULL; + wait_on_bit(NULL, 0, action, 0); ],[ AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_CRED_STRUCT, 1, [struct cred exists]) + AC_DEFINE(HAVE_WAIT_ON_BIT_ACTION, 1, [yes]) ],[ AC_MSG_RESULT(no) ]) ]) dnl # -dnl # Custom SPL patch may export this symbol. +dnl # 4.7 API change +dnl # i_mutex is changed to i_rwsem. Instead of directly using +dnl # i_mutex/i_rwsem, we should use inode_lock() and inode_lock_shared() +dnl # We test inode_lock_shared because inode_lock is introduced earlier. dnl # -AC_DEFUN([SPL_AC_GROUPS_SEARCH], [ - SPL_CHECK_SYMBOL_EXPORT( - [groups_search], - [], - [AC_DEFINE(HAVE_GROUPS_SEARCH, 1, - [groups_search() is available])], - []) -]) - -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])], - []) -]) - -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]) +AC_DEFUN([SPL_AC_INODE_LOCK], [ + AC_MSG_CHECKING([whether inode_lock_shared() exists]) + tmp_flags="$EXTRA_KCFLAGS" + EXTRA_KCFLAGS="-Werror" SPL_LINUX_TRY_COMPILE([ - #include + #include ],[ - proc_dostring(NULL, 0, NULL, NULL, NULL); + struct inode *inode = NULL; + inode_lock_shared(inode); ],[ AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_5ARGS_PROC_HANDLER, 1, - [proc_handler() wants 5 args]) + AC_DEFINE(HAVE_INODE_LOCK_SHARED, 1, [yes]) ],[ AC_MSG_RESULT(no) ]) + EXTRA_KCFLAGS="$tmp_flags" ]) dnl # -dnl # 2.6.x API change, -dnl # kvasprintf() function added. +dnl # Check whether mutex has owner with task_struct type. dnl # -AC_DEFUN([SPL_AC_KVASPRINTF], [ - SPL_CHECK_SYMBOL_EXPORT( - [kvasprintf], - [], - [AC_DEFINE(HAVE_KVASPRINTF, 1, - [kvasprintf() is available])], - []) -]) - +dnl # Note that before Linux 3.0, mutex owner is of type thread_info. dnl # -dnl # 2.6.35 API change, -dnl # Unused 'struct dentry *' removed from prototype. +dnl # Note that in Linux 3.18, the condition for owner is changed from +dnl # defined(CONFIG_DEBUG_MUTEXES) || defined(CONFIG_SMP) to +dnl # defined(CONFIG_DEBUG_MUTEXES) || defined(CONFIG_MUTEX_SPIN_ON_OWNER) dnl # -AC_DEFUN([SPL_AC_3ARGS_FILE_FSYNC], [ - AC_MSG_CHECKING([whether file_fsync() wants 3 args]) +AC_DEFUN([SPL_AC_MUTEX_OWNER], [ + AC_MSG_CHECKING([whether mutex has owner]) + tmp_flags="$EXTRA_KCFLAGS" + EXTRA_KCFLAGS="-Werror" SPL_LINUX_TRY_COMPILE([ - #include + #include + #include ],[ - file_fsync(NULL, NULL, 0); + DEFINE_MUTEX(m); + struct task_struct *t __attribute__ ((unused)); + t = m.owner; ],[ AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_3ARGS_FILE_FSYNC, 1, - [file_fsync() wants 3 args]) + AC_DEFINE(HAVE_MUTEX_OWNER, 1, [yes]) ],[ AC_MSG_RESULT(no) ]) + EXTRA_KCFLAGS="$tmp_flags" ]) 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], [ - SPL_CHECK_SYMBOL_EXPORT( - [rwsem_is_locked], - [lib/rwsem-spinlock.c], - [AC_DEFINE(RWSEM_IS_LOCKED_TAKES_WAIT_LOCK, 1, - [rwsem_is_locked() acquires sem->wait_lock])], - []) -]) - -dnl # -dnl # 2.6.37 API compat, -dnl # The function invalidate_inodes() is no longer exported by the kernel. -dnl # The prototype however is still available which means it is safe -dnl # to acquire the symbol's address using spl_kallsyms_lookup_name(). -dnl # -AC_DEFUN([SPL_AC_KERNEL_INVALIDATE_INODES], [ - SPL_CHECK_SYMBOL_EXPORT( - [invalidate_inodes], - [], - [AC_DEFINE(HAVE_INVALIDATE_INODES, 1, - [invalidate_inodes() is available])], - []) -]) - +dnl # 4.9 API change +dnl # group_info changed from 2d array via >blocks to 1d array via ->gid dnl # -dnl # 2.6.39 API compat, -dnl # The function invalidate_inodes() now take 2 arguments. The second -dnl # 'kill_dirty' argument describes how invalidate_inodes() should -dnl # handle dirty inodes. Only when set will dirty inodes be discarded, -dnl # otherwise they will be handled as busy. -dnl # -dnl # Unfortunately, we don't have access to the invalidate_inodes() -dnl # prototype so it's not easy to check how many arguments it takes. -dnl # However, this change was done for the benefit of invalidate_device() -dnl # which also added an argument. The invalidate_device() symbol does -dnl # exist in the development headers so if it takes two arguments we -dnl # can fairly safely infer that invalidate_inodes() takes two arguments -dnl # as well. See commit 93b270f76e7ef3b81001576860c2701931cdc78b. -dnl # -AC_DEFUN([SPL_AC_KERNEL_2ARGS_INVALIDATE_INODES], - [AC_MSG_CHECKING([whether invalidate_inodes() wants 2 args]) +AC_DEFUN([SPL_AC_GROUP_INFO_GID], [ + AC_MSG_CHECKING([whether group_info->gid exists]) + tmp_flags="$EXTRA_KCFLAGS" + EXTRA_KCFLAGS="-Werror" SPL_LINUX_TRY_COMPILE([ - #include + #include ],[ - return __invalidate_device(NULL, 0); + struct group_info *gi = groups_alloc(1); + gi->gid[0] = KGIDT_INIT(0); ],[ AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_2ARGS_INVALIDATE_INODES, 1, - [invalidate_inodes() wants 2 args]) + AC_DEFINE(HAVE_GROUP_INFO_GID, 1, [group_info->gid exists]) ],[ 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], [ - SPL_CHECK_SYMBOL_EXPORT( - [shrink_dcache_memory], - [fs/dcache.c], - [AC_DEFINE(HAVE_SHRINK_DCACHE_MEMORY, 1, - [shrink_dcache_memory() is available])], - []) -]) - -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], [ - SPL_CHECK_SYMBOL_EXPORT( - [shrink_icache_memory], - [fs/inode.c], - [AC_DEFINE(HAVE_SHRINK_ICACHE_MEMORY, 1, - [shrink_icache_memory() is available])], - []) + EXTRA_KCFLAGS="$tmp_flags" ])