mirror of
https://git.proxmox.com/git/mirror_zfs.git
synced 2024-11-17 18:11:00 +03:00
5232d256b4
- Prior to 2.6.17 there were no *_pgdat helper functions in mm/mmzone.c. Instead for_each_zone() operated directly on pgdat_list which may or may not have been exported depending on how your kernel was compiled. Now new configure checks determine if you have the helpers or not, and if the needed symbols are exported. If they are not exported then they are dynamically aquired at runtime by kallsyms_lookup_name().
987 lines
24 KiB
Plaintext
987 lines
24 KiB
Plaintext
AC_DEFUN([SPL_AC_KERNEL], [
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AC_ARG_WITH([linux],
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AS_HELP_STRING([--with-linux=PATH],
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[Path to kernel source]),
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[kernelsrc="$withval"; kernelbuild="$withval"])
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AC_ARG_WITH([linux-obj],
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AS_HELP_STRING([--with-linux-obj=PATH],
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[Path to kernel build objects]),
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[kernelbuild="$withval"])
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AC_MSG_CHECKING([kernel source directory])
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if test -z "$kernelsrc"; then
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sourcelink=`ls -1d /usr/src/kernels/* /usr/src/linux-* \
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2>/dev/null | grep -v obj | tail -1`
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if test -e ${sourcelink}; then
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kernelsrc=`readlink -f ${sourcelink}`
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kernelbuild=
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else
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AC_MSG_RESULT([Not found])
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AC_MSG_ERROR([
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*** Please specify the location of the kernel source
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*** with the '--with-linux=PATH' option])
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fi
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else
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if test "$kernelsrc" = "NONE"; then
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kernsrcver=NONE
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fi
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fi
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AC_MSG_RESULT([$kernelsrc])
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AC_MSG_CHECKING([kernel build directory])
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if test -z "$kernelbuild" && test -d ${kernelsrc}-obj; then
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kernelbuild=${kernelsrc}-obj/`arch`/`arch`
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else
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kernelbuild=${kernelsrc}
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fi
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AC_MSG_RESULT([$kernelbuild])
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AC_MSG_CHECKING([kernel source version])
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if test -r $kernelbuild/include/linux/version.h &&
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fgrep -q UTS_RELEASE $kernelbuild/include/linux/version.h; then
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kernsrcver=`(echo "#include <linux/version.h>";
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echo "kernsrcver=UTS_RELEASE") |
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cpp -I $kernelbuild/include |
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grep "^kernsrcver=" | cut -d \" -f 2`
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elif test -r $kernelbuild/include/linux/utsrelease.h &&
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fgrep -q UTS_RELEASE $kernelbuild/include/linux/utsrelease.h; then
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kernsrcver=`(echo "#include <linux/utsrelease.h>";
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echo "kernsrcver=UTS_RELEASE") |
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cpp -I $kernelbuild/include |
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grep "^kernsrcver=" | cut -d \" -f 2`
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fi
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if test -z "$kernsrcver"; then
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AC_MSG_RESULT([Not found])
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AC_MSG_ERROR([
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*** Cannot determine the version of the linux kernel source.
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*** Please prepare the kernel before running this script])
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fi
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AC_MSG_RESULT([$kernsrcver])
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LINUX=${kernelsrc}
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LINUX_OBJ=${kernelbuild}
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LINUX_VERSION=${kernsrcver}
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abs_srcdir=`readlink -f ${srcdir}`
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kerninclude="-I${abs_srcdir} -I${abs_srcdir}/include"
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kernwarn="-Wstrict-prototypes -Werror"
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if test "${LINUX_OBJ}" != "${LINUX}"; then
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kernobjs="O=$kernelbuild"
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fi
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KERNELCFLAGS=
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KERNELCPPFLAGS="${kerninclude} ${kernwarn}"
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KERNELMAKE_PARAMS="${kernobjs}"
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AC_SUBST(LINUX)
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AC_SUBST(LINUX_OBJ)
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AC_SUBST(LINUX_VERSION)
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AC_SUBST(KERNELMAKE_PARAMS)
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AC_SUBST(KERNELCPPFLAGS)
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AC_SUBST(KERNELCFLAGS)
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])
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AC_DEFUN([SPL_AC_LICENSE], [
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AC_MSG_CHECKING([license])
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AC_MSG_RESULT([GPL])
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KERNELCPPFLAGS="${KERNELCPPFLAGS} -DHAVE_GPL_ONLY_SYMBOLS"
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])
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AC_DEFUN([SPL_AC_DEBUG], [
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AC_MSG_CHECKING([whether debugging is enabled])
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AC_ARG_ENABLE( [debug],
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AS_HELP_STRING([--enable-debug],
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[Enable generic debug support (default off)]),
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[ case "$enableval" in
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yes) spl_ac_debug=yes ;;
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no) spl_ac_debug=no ;;
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*) AC_MSG_RESULT([Error!])
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AC_MSG_ERROR([Bad value "$enableval" for --enable-debug]) ;;
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esac ]
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)
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if test "$spl_ac_debug" = yes; then
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AC_MSG_RESULT([yes])
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KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG"
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else
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AC_MSG_RESULT([no])
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KERNELCPPFLAGS="${KERNELCPPFLAGS} -DNDEBUG"
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fi
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])
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AC_DEFUN([SPL_AC_DEBUG_KMEM], [
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AC_MSG_CHECKING([whether kmem debugging is enabled])
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AC_ARG_ENABLE( [debug-kmem],
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AS_HELP_STRING([--enable-debug-kmem],
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[Enable kmem debug support (default off)]),
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[ case "$enableval" in
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yes) spl_ac_debug_kmem=yes ;;
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no) spl_ac_debug_kmem=no ;;
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*) AC_MSG_RESULT([Error!])
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AC_MSG_ERROR([Bad value "$enableval" for --enable-debug-kmem]) ;;
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esac ]
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)
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if test "$spl_ac_debug_kmem" = yes; then
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AC_MSG_RESULT([yes])
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AC_DEFINE([DEBUG_KMEM], [1],
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[Define to 1 to enable kmem debugging])
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KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG_KMEM"
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else
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AC_MSG_RESULT([no])
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fi
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])
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AC_DEFUN([SPL_AC_DEBUG_MUTEX], [
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AC_MSG_CHECKING([whether mutex debugging is enabled])
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AC_ARG_ENABLE( [debug-mutex],
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AS_HELP_STRING([--enable-debug-mutex],
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[Enable mutex debug support (default off)]),
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[ case "$enableval" in
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yes) spl_ac_debug_mutex=yes ;;
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no) spl_ac_debug_mutex=no ;;
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*) AC_MSG_RESULT([Error!])
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AC_MSG_ERROR([Bad value "$enableval" for --enable-debug-mutex]) ;;
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esac ]
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)
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if test "$spl_ac_debug_mutex" = yes; then
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AC_MSG_RESULT([yes])
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AC_DEFINE([DEBUG_MUTEX], [1],
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[Define to 1 to enable mutex debugging])
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KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG_MUTEX"
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else
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AC_MSG_RESULT([no])
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fi
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])
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AC_DEFUN([SPL_AC_DEBUG_KSTAT], [
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AC_MSG_CHECKING([whether kstat debugging is enabled])
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AC_ARG_ENABLE( [debug-kstat],
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AS_HELP_STRING([--enable-debug-kstat],
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[Enable kstat debug support (default off)]),
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[ case "$enableval" in
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yes) spl_ac_debug_kstat=yes ;;
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no) spl_ac_debug_kstat=no ;;
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*) AC_MSG_RESULT([Error!])
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AC_MSG_ERROR([Bad value "$enableval" for --enable-debug-kstat]) ;;
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esac ]
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)
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if test "$spl_ac_debug_kstat" = yes; then
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AC_MSG_RESULT([yes])
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AC_DEFINE([DEBUG_KSTAT], [1],
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[Define to 1 to enable kstat debugging])
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KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG_KSTAT"
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else
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AC_MSG_RESULT([no])
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fi
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])
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AC_DEFUN([SPL_AC_DEBUG_CALLB], [
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AC_MSG_CHECKING([whether callb debugging is enabled])
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AC_ARG_ENABLE( [debug-callb],
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AS_HELP_STRING([--enable-debug-callb],
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[Enable callb debug support (default off)]),
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[ case "$enableval" in
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yes) spl_ac_debug_callb=yes ;;
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no) spl_ac_debug_callb=no ;;
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*) AC_MSG_RESULT([Error!])
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AC_MSG_ERROR([Bad value "$enableval" for --enable-debug-callb]) ;;
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esac ]
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)
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if test "$spl_ac_debug_callb" = yes; then
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AC_MSG_RESULT([yes])
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AC_DEFINE([DEBUG_CALLB], [1],
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[Define to 1 to enable callb debugging])
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KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG_CALLB"
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else
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AC_MSG_RESULT([no])
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fi
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])
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dnl #
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dnl # SPL_LINUX_CONFTEST
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dnl #
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AC_DEFUN([SPL_LINUX_CONFTEST], [
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cat >conftest.c <<_ACEOF
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$1
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_ACEOF
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])
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dnl #
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dnl # SPL_LANG_PROGRAM(C)([PROLOGUE], [BODY])
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dnl #
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m4_define([SPL_LANG_PROGRAM], [
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$1
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int
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main (void)
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{
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dnl Do *not* indent the following line: there may be CPP directives.
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dnl Don't move the `;' right after for the same reason.
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$2
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;
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return 0;
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}
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])
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dnl #
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dnl # SPL_LINUX_COMPILE_IFELSE / like AC_COMPILE_IFELSE
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dnl #
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AC_DEFUN([SPL_LINUX_COMPILE_IFELSE], [
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m4_ifvaln([$1], [SPL_LINUX_CONFTEST([$1])])
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rm -Rf build && mkdir -p build
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echo "obj-m := conftest.o" >build/Makefile
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AS_IF(
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[AC_TRY_COMMAND(cp conftest.c build && make [$2] LINUXINCLUDE="-Iinclude -Iinclude2 -I$LINUX/include -include include/linux/autoconf.h" -o tmp_include_depends -o scripts -o include/config/MARKER -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build) >/dev/null && AC_TRY_COMMAND([$3])],
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[$4],
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[_AC_MSG_LOG_CONFTEST m4_ifvaln([$5],[$5])]
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)
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rm -Rf build
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])
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dnl #
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dnl # SPL_LINUX_TRY_COMPILE like AC_TRY_COMPILE
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dnl #
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AC_DEFUN([SPL_LINUX_TRY_COMPILE],
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[SPL_LINUX_COMPILE_IFELSE(
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[AC_LANG_SOURCE([SPL_LANG_PROGRAM([[$1]], [[$2]])])],
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[modules],
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[test -s build/conftest.o],
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[$3], [$4])
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])
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dnl #
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dnl # SPL_LINUX_CONFIG
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dnl #
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AC_DEFUN([SPL_LINUX_CONFIG],
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[AC_MSG_CHECKING([whether Linux was built with CONFIG_$1])
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SPL_LINUX_TRY_COMPILE([
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#ifndef AUTOCONF_INCLUDED
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#include <linux/config.h>
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#endif
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],[
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#ifndef CONFIG_$1
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#error CONFIG_$1 not #defined
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#endif
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],[
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AC_MSG_RESULT([yes])
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$2
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],[
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AC_MSG_RESULT([no])
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$3
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])
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])
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dnl #
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dnl # SPL_CHECK_SYMBOL_EXPORT
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dnl # check symbol exported or not
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dnl #
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AC_DEFUN([SPL_CHECK_SYMBOL_EXPORT],
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[AC_MSG_CHECKING([whether symbol $1 is exported])
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grep -q -E '[[[:space:]]]$1[[[:space:]]]' $LINUX_OBJ/Module.symvers 2>/dev/null
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rc=$?
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if test $rc -ne 0; then
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export=0
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for file in $2; do
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grep -q -E "EXPORT_SYMBOL.*($1)" "$LINUX_OBJ/$file" 2>/dev/null
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rc=$?
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if test $rc -eq 0; then
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export=1
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break;
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fi
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done
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if test $export -eq 0; then
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AC_MSG_RESULT([no])
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$4
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else
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AC_MSG_RESULT([yes])
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$3
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fi
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else
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AC_MSG_RESULT([yes])
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$3
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fi
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])
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dnl #
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dnl # SPL_CHECK_HEADER
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dnl # check whether header exists and define HAVE_$2_HEADER
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dnl #
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AC_DEFUN([SPL_CHECK_HEADER],
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[AC_MSG_CHECKING([whether header $1 exists])
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SPL_LINUX_TRY_COMPILE([
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#include <$1>
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],[
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return 0;
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],[
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AC_DEFINE(HAVE_$2_HEADER, 1, [$1 exists])
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AC_MSG_RESULT(yes)
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$3
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],[
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AC_MSG_RESULT(no)
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$4
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])
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])
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dnl #
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dnl # 2.6.24 API change,
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dnl # check if uintptr_t typedef is defined
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dnl #
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AC_DEFUN([SPL_AC_TYPE_UINTPTR_T],
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[AC_MSG_CHECKING([whether kernel defines uintptr_t])
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SPL_LINUX_TRY_COMPILE([
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#include <linux/types.h>
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],[
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uintptr_t *ptr;
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],[
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AC_MSG_RESULT([yes])
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AC_DEFINE(HAVE_UINTPTR_T, 1,
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[kernel defines uintptr_t])
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],[
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AC_MSG_RESULT([no])
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])
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])
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dnl #
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dnl # 2.6.x API change,
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dnl # check if atomic64_t typedef is defined
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dnl #
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AC_DEFUN([SPL_AC_TYPE_ATOMIC64_T],
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[AC_MSG_CHECKING([whether kernel defines atomic64_t])
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SPL_LINUX_TRY_COMPILE([
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#include <asm/atomic.h>
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],[
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atomic64_t *ptr;
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],[
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AC_MSG_RESULT([yes])
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AC_DEFINE(HAVE_ATOMIC64_T, 1,
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[kernel defines atomic64_t])
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],[
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AC_MSG_RESULT([no])
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])
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])
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dnl #
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dnl # 2.6.20 API change,
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dnl # INIT_WORK use 2 args and not store data inside
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dnl #
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AC_DEFUN([SPL_AC_3ARGS_INIT_WORK],
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[AC_MSG_CHECKING([whether INIT_WORK wants 3 args])
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SPL_LINUX_TRY_COMPILE([
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#include <linux/workqueue.h>
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],[
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struct work_struct work;
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INIT_WORK(&work, NULL, NULL);
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],[
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_3ARGS_INIT_WORK, 1,
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[INIT_WORK wants 3 args])
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],[
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AC_MSG_RESULT(no)
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])
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])
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dnl #
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dnl # 2.6.21 API change,
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dnl # 'register_sysctl_table' use only one argument instead of two
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dnl #
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AC_DEFUN([SPL_AC_2ARGS_REGISTER_SYSCTL],
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[AC_MSG_CHECKING([whether register_sysctl_table() wants 2 args])
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SPL_LINUX_TRY_COMPILE([
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#include <linux/sysctl.h>
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],[
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return register_sysctl_table(NULL,0);
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],[
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_2ARGS_REGISTER_SYSCTL, 1,
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[register_sysctl_table() wants 2 args])
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],[
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AC_MSG_RESULT(no)
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])
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])
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dnl #
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dnl # 2.6.23 API change
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dnl # Old set_shrinker API replaced with register_shrinker
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dnl #
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AC_DEFUN([SPL_AC_SET_SHRINKER], [
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AC_MSG_CHECKING([whether set_shrinker() available])
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SPL_LINUX_TRY_COMPILE([
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#include <linux/mm.h>
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],[
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return set_shrinker(DEFAULT_SEEKS, NULL);
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],[
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AC_MSG_RESULT([yes])
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AC_DEFINE(HAVE_SET_SHRINKER, 1,
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[set_shrinker() available])
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],[
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AC_MSG_RESULT([no])
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])
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])
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dnl #
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dnl # 2.6.25 API change,
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dnl # struct path entry added to struct nameidata
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dnl #
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AC_DEFUN([SPL_AC_PATH_IN_NAMEIDATA],
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[AC_MSG_CHECKING([whether struct path used in struct nameidata])
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SPL_LINUX_TRY_COMPILE([
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#include <linux/namei.h>
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],[
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struct nameidata nd;
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nd.path.mnt = NULL;
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nd.path.dentry = NULL;
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],[
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_PATH_IN_NAMEIDATA, 1,
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[struct path used in struct nameidata])
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],[
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AC_MSG_RESULT(no)
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])
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])
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dnl #
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dnl # Custom SPL patch may export this system it is not required
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dnl #
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AC_DEFUN([SPL_AC_TASK_CURR], [
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SPL_CHECK_SYMBOL_EXPORT([task_curr], [kernel/sched.c],
|
|
[AC_DEFINE(HAVE_TASK_CURR, 1, [task_curr() exported])],
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[])
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])
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dnl #
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dnl # 2.6.19 API change,
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dnl # Use CTL_UNNUMBERED when binary sysctl is not required
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dnl #
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AC_DEFUN([SPL_AC_CTL_UNNUMBERED],
|
|
[AC_MSG_CHECKING([whether unnumbered sysctl support exists])
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|
SPL_LINUX_TRY_COMPILE([
|
|
#include <linux/sysctl.h>
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|
],[
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|
#ifndef CTL_UNNUMBERED
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|
#error CTL_UNNUMBERED undefined
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|
#endif
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|
],[
|
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AC_MSG_RESULT(yes)
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|
AC_DEFINE(HAVE_CTL_UNNUMBERED, 1,
|
|
[unnumbered sysctl support exists])
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|
],[
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AC_MSG_RESULT(no)
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|
])
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|
])
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|
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dnl #
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dnl # 2.6.16 API change.
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|
dnl # Check if 'fls64()' is available
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dnl #
|
|
AC_DEFUN([SPL_AC_FLS64],
|
|
[AC_MSG_CHECKING([whether fls64() is available])
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|
SPL_LINUX_TRY_COMPILE([
|
|
#include <linux/bitops.h>
|
|
],[
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|
return fls64(0);
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|
],[
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|
AC_MSG_RESULT(yes)
|
|
AC_DEFINE(HAVE_FLS64, 1, [fls64() is available])
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|
],[
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AC_MSG_RESULT(no)
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|
])
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|
])
|
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|
|
dnl #
|
|
dnl # 2.6.18 API change, check whether device_create() is available.
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|
dnl # Device_create() was introduced in 2.6.18 and depricated
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|
dnl # class_device_create() which was fully removed in 2.6.26.
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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 #
|
|
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])
|
|
tmp_flags="$EXTRA_KCFLAGS"
|
|
EXTRA_KCFLAGS="-Werror"
|
|
SPL_LINUX_TRY_COMPILE([
|
|
#include <linux/device.h>
|
|
],[
|
|
device_create(NULL, NULL, 0, NULL, "%d", 1);
|
|
],[
|
|
AC_MSG_RESULT(yes)
|
|
AC_DEFINE(HAVE_5ARGS_DEVICE_CREATE, 1,
|
|
[device_create wants 5 args])
|
|
],[
|
|
AC_MSG_RESULT(no)
|
|
])
|
|
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 #
|
|
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])
|
|
SPL_LINUX_TRY_COMPILE([
|
|
#include <linux/time.h>
|
|
void set_normalized_timespec(struct timespec *ts,
|
|
time_t sec, long nsec) { }
|
|
],
|
|
[],
|
|
[
|
|
AC_MSG_RESULT(no)
|
|
],[
|
|
AC_MSG_RESULT(yes)
|
|
AC_DEFINE(HAVE_SET_NORMALIZED_TIMESPEC_INLINE, 1,
|
|
[set_normalized_timespec() is available as inline])
|
|
])
|
|
])
|
|
|
|
dnl #
|
|
dnl # 2.6.18 API change,
|
|
dnl # timespec_sub() inline function available in linux/time.h
|
|
dnl #
|
|
AC_DEFUN([SPL_AC_TIMESPEC_SUB], [
|
|
AC_MSG_CHECKING([whether timespec_sub() is available])
|
|
SPL_LINUX_TRY_COMPILE([
|
|
#include <linux/time.h>
|
|
],[
|
|
struct timespec a, b, c = { 0 };
|
|
c = timespec_sub(a, b);
|
|
],[
|
|
AC_MSG_RESULT(yes)
|
|
AC_DEFINE(HAVE_TIMESPEC_SUB, 1, [timespec_sub() is available])
|
|
],[
|
|
AC_MSG_RESULT(no)
|
|
])
|
|
])
|
|
|
|
dnl #
|
|
dnl # 2.6.19 API change,
|
|
dnl # check if init_utsname() is available in linux/utsname.h
|
|
dnl #
|
|
AC_DEFUN([SPL_AC_INIT_UTSNAME], [
|
|
AC_MSG_CHECKING([whether init_utsname() is available])
|
|
SPL_LINUX_TRY_COMPILE([
|
|
#include <linux/utsname.h>
|
|
],[
|
|
struct new_utsname *a = init_utsname();
|
|
],[
|
|
AC_MSG_RESULT(yes)
|
|
AC_DEFINE(HAVE_INIT_UTSNAME, 1, [init_utsname() is available])
|
|
],[
|
|
AC_MSG_RESULT(no)
|
|
])
|
|
])
|
|
|
|
dnl #
|
|
dnl # 2.6.26 API change,
|
|
dnl # definition of struct fdtable relocated to linux/fdtable.h
|
|
dnl #
|
|
AC_DEFUN([SPL_AC_FDTABLE_HEADER], [
|
|
SPL_CHECK_HEADER([linux/fdtable.h], [FDTABLE], [], [])
|
|
])
|
|
|
|
dnl #
|
|
dnl # 2.6.14 API change,
|
|
dnl # check whether 'files_fdtable()' exists
|
|
dnl #
|
|
AC_DEFUN([SPL_AC_FILES_FDTABLE], [
|
|
AC_MSG_CHECKING([whether files_fdtable() is available])
|
|
SPL_LINUX_TRY_COMPILE([
|
|
#include <linux/sched.h>
|
|
#include <linux/file.h>
|
|
#ifdef HAVE_FDTABLE_HEADER
|
|
#include <linux/fdtable.h>
|
|
#endif
|
|
],[
|
|
struct files_struct *files = current->files;
|
|
struct fdtable *fdt = files_fdtable(files);
|
|
],[
|
|
AC_MSG_RESULT(yes)
|
|
AC_DEFINE(HAVE_FILES_FDTABLE, 1, [files_fdtable() is available])
|
|
],[
|
|
AC_MSG_RESULT(no)
|
|
])
|
|
])
|
|
|
|
dnl #
|
|
dnl # 2.6.18 API change,
|
|
dnl # added linux/uaccess.h
|
|
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 #
|
|
AC_DEFUN([SPL_AC_KMALLOC_NODE], [
|
|
AC_MSG_CHECKING([whether kmalloc_node() is available])
|
|
SPL_LINUX_TRY_COMPILE([
|
|
#include <linux/slab.h>
|
|
],[
|
|
void *a = kmalloc_node(1, GFP_KERNEL, 0);
|
|
],[
|
|
AC_MSG_RESULT(yes)
|
|
AC_DEFINE(HAVE_KMALLOC_NODE, 1, [kmalloc_node() is available])
|
|
],[
|
|
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 #
|
|
AC_DEFUN([SPL_AC_INODE_I_MUTEX], [
|
|
AC_MSG_CHECKING([whether struct inode has i_mutex])
|
|
SPL_LINUX_TRY_COMPILE([
|
|
#include <linux/fs.h>
|
|
#include <linux/mutex.h>
|
|
],[
|
|
struct inode i;
|
|
mutex_init(&i.i_mutex);
|
|
],[
|
|
AC_MSG_RESULT(yes)
|
|
AC_DEFINE(HAVE_INODE_I_MUTEX, 1, [struct inode has i_mutex])
|
|
],[
|
|
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 #
|
|
AC_DEFUN([SPL_AC_MUTEX_LOCK_NESTED], [
|
|
AC_MSG_CHECKING([whether mutex_lock_nested() is available])
|
|
SPL_LINUX_TRY_COMPILE([
|
|
#include <linux/mutex.h>
|
|
],[
|
|
struct mutex mutex;
|
|
mutex_init(&mutex);
|
|
mutex_lock_nested(&mutex, 0);
|
|
],[
|
|
AC_MSG_RESULT(yes)
|
|
AC_DEFINE(HAVE_MUTEX_LOCK_NESTED, 1,
|
|
[mutex_lock_nested() is available])
|
|
],[
|
|
AC_MSG_RESULT(no)
|
|
])
|
|
])
|
|
|
|
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
|
|
dnl #
|
|
AC_DEFUN([SPL_AC_3ARGS_ON_EACH_CPU], [
|
|
AC_MSG_CHECKING([whether on_each_cpu() wants 3 args])
|
|
SPL_LINUX_TRY_COMPILE([
|
|
#include <linux/smp.h>
|
|
],[
|
|
on_each_cpu(NULL, NULL, 0);
|
|
],[
|
|
AC_MSG_RESULT(yes)
|
|
AC_DEFINE(HAVE_3ARGS_ON_EACH_CPU, 1,
|
|
[on_each_cpu wants 3 args])
|
|
],[
|
|
AC_MSG_RESULT(no)
|
|
])
|
|
])
|
|
|
|
dnl #
|
|
dnl # 2.6.18 API change,
|
|
dnl # kallsyms_lookup_name no longer exported
|
|
dnl #
|
|
AC_DEFUN([SPL_AC_KALLSYMS_LOOKUP_NAME], [
|
|
SPL_CHECK_SYMBOL_EXPORT(
|
|
[kallsyms_lookup_name],
|
|
[],
|
|
[AC_DEFINE(HAVE_KALLSYMS_LOOKUP_NAME, 1,
|
|
[kallsyms_lookup_name() is available])],
|
|
[])
|
|
])
|
|
|
|
dnl #
|
|
dnl # Proposed API change,
|
|
dnl # This symbol is not available in stock kernels. You may build a
|
|
dnl # custom kernel with the *-spl-export-symbols.patch which will export
|
|
dnl # these symbols for use. If your already rolling a custom kernel for
|
|
dnl # your environment this is recommended.
|
|
dnl #
|
|
AC_DEFUN([SPL_AC_GET_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_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])],
|
|
[])
|
|
])
|
|
|
|
dnl #
|
|
dnl # Proposed API change,
|
|
dnl # This symbol is not available in stock kernels. You may build a
|
|
dnl # custom kernel with the *-spl-export-symbols.patch which will export
|
|
dnl # these symbols for use. If your already rolling a custom kernel for
|
|
dnl # your environment this is recommended.
|
|
dnl #
|
|
AC_DEFUN([SPL_AC_GET_ZONE_COUNTS], [
|
|
SPL_CHECK_SYMBOL_EXPORT(
|
|
[get_zone_counts],
|
|
[],
|
|
[AC_DEFINE(HAVE_GET_ZONE_COUNTS, 1,
|
|
[get_zone_counts() is available])],
|
|
[])
|
|
])
|
|
|
|
dnl #
|
|
dnl # 2.6.18 API change,
|
|
dnl # First introduced global_page_state() support as an inline.
|
|
dnl #
|
|
AC_DEFUN([SPL_AC_GLOBAL_PAGE_STATE], [
|
|
AC_MSG_CHECKING([whether global_page_state() is available])
|
|
SPL_LINUX_TRY_COMPILE([
|
|
#include <linux/vmstat.h>
|
|
],[
|
|
unsigned long state;
|
|
state = global_page_state(NR_FREE_PAGES);
|
|
],[
|
|
AC_MSG_RESULT(yes)
|
|
AC_DEFINE(HAVE_GLOBAL_PAGE_STATE, 1,
|
|
[global_page_state() is available])
|
|
],[
|
|
AC_MSG_RESULT(no)
|
|
])
|
|
])
|
|
|
|
dnl #
|
|
dnl # 2.6.21 API change,
|
|
dnl # Public global zone stats now include free/inactive/active page
|
|
dnl # counts. This replaced the priviate get_zone_counts() interface.
|
|
dnl #
|
|
AC_DEFUN([SPL_AC_ZONE_STAT_ITEM_FIA], [
|
|
AC_MSG_CHECKING([whether free/inactive/active page state is available])
|
|
SPL_LINUX_TRY_COMPILE([
|
|
#include <linux/mmzone.h>
|
|
],[
|
|
enum zone_stat_item i1, i2, i3;
|
|
i1 = NR_FREE_PAGES;
|
|
i2 = NR_INACTIVE;
|
|
i3 = NR_ACTIVE;
|
|
],[
|
|
AC_MSG_RESULT(yes)
|
|
AC_DEFINE(HAVE_ZONE_STAT_ITEM_FIA, 1,
|
|
[free/inactive/active page state is available])
|
|
],[
|
|
AC_MSG_RESULT(no)
|
|
])
|
|
])
|
|
|
|
dnl #
|
|
dnl # SLES API change, never adopted in mainline,
|
|
dnl # Third 'struct vfsmount *' argument removed.
|
|
dnl #
|
|
AC_DEFUN([SPL_AC_2ARGS_VFS_UNLINK],
|
|
[AC_MSG_CHECKING([whether vfs_unlink() wants 2 args])
|
|
SPL_LINUX_TRY_COMPILE([
|
|
#include <linux/fs.h>
|
|
],[
|
|
vfs_unlink(NULL, NULL);
|
|
],[
|
|
AC_MSG_RESULT(yes)
|
|
AC_DEFINE(HAVE_2ARGS_VFS_UNLINK, 1,
|
|
[vfs_unlink() wants 2 args])
|
|
],[
|
|
AC_MSG_RESULT(no)
|
|
])
|
|
])
|
|
|
|
dnl #
|
|
dnl # SLES API change, never adopted in mainline,
|
|
dnl # Third and sixth 'struct vfsmount *' argument removed.
|
|
dnl #
|
|
AC_DEFUN([SPL_AC_4ARGS_VFS_RENAME],
|
|
[AC_MSG_CHECKING([whether vfs_rename() wants 4 args])
|
|
SPL_LINUX_TRY_COMPILE([
|
|
#include <linux/fs.h>
|
|
],[
|
|
vfs_rename(NULL, NULL, NULL, NULL);
|
|
],[
|
|
AC_MSG_RESULT(yes)
|
|
AC_DEFINE(HAVE_4ARGS_VFS_RENAME, 1,
|
|
[vfs_rename() wants 4 args])
|
|
],[
|
|
AC_MSG_RESULT(no)
|
|
])
|
|
])
|