SLES10 Fixes (part 2):
- Configure check, the div64_64() function was renamed to div64_u64() as of 2.6.26. - Configure check, the global_page_state() fuction was introduced in 2.6.18 kernels. The earlier 2.6.16 based SLES10 must not try and use it, thankfully get_zone_counts() is still available. - To simplify debugging poison all symbols aquired dynamically using spl_kallsyms_lookup_name() with SYMBOL_POISON. - Add console messages when the user mode helpers fail. - spl_kmem_init_globals() use bit shifts instead of division. - When the monotonic clock is unavailable __gethrtime() must perform the HZ division as an 'unsigned long long' because the SPL only implements __udivdi3(), and not __divdi3() for 'long long' division on 32-bit arches.
This commit is contained in:
Brian Behlendorf
parent
bf338d8d09
commit
96dded3844
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@ -706,22 +706,29 @@ AC_DEFUN([SPL_AC_INODE_I_MUTEX], [
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])
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dnl #
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dnl # 2.6.14 API change,
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dnl # check whether 'div64_64()' is available
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dnl #
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dnl # 2.6.22 API change,
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dnl # First introduced 'div64_64()' in lib/div64.c
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dnl
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AC_DEFUN([SPL_AC_DIV64_64], [
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AC_MSG_CHECKING([whether div64_64() is available])
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SPL_LINUX_TRY_COMPILE([
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#include <asm/div64.h>
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#include <linux/types.h>
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],[
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uint64_t i = div64_64(1ULL, 1ULL);
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],[
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_DIV64_64, 1, [div64_64() is available])
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],[
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AC_MSG_RESULT(no)
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])
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SPL_CHECK_SYMBOL_EXPORT(
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[div64_64],
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[],
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[AC_DEFINE(HAVE_DIV64_64, 1,
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[div64_64() is available])],
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[])
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])
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dnl #
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dnl # 2.6.26 API change,
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dnl # Renamed 'div64_64()' to 'div64_u64' in lib/div64.c
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dnl #
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AC_DEFUN([SPL_AC_DIV64_U64], [
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SPL_CHECK_SYMBOL_EXPORT(
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[div64_u64],
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[],
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[AC_DEFINE(HAVE_DIV64_U64, 1,
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[div64_u64() is available])],
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[])
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])
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dnl #
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@ -836,6 +843,26 @@ AC_DEFUN([SPL_AC_GET_ZONE_COUNTS], [
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[])
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])
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dnl #
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dnl # 2.6.18 API change,
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dnl # First introduced global_page_state() support as an inline.
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dnl #
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AC_DEFUN([SPL_AC_GLOBAL_PAGE_STATE], [
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AC_MSG_CHECKING([whether global_page_state() is available])
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SPL_LINUX_TRY_COMPILE([
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#include <linux/vmstat.h>
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],[
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unsigned long state;
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state = global_page_state(NR_FREE_PAGES);
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],[
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_GLOBAL_PAGE_STATE, 1,
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[global_page_state() 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 #
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dnl # 2.6.21 API change,
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dnl # Public global zone stats now include free/inactive/active page
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@ -20510,48 +20510,34 @@ fi
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echo "$as_me:$LINENO: checking whether div64_64() is available" >&5
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echo $ECHO_N "checking whether div64_64() is available... $ECHO_C" >&6
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echo "$as_me:$LINENO: checking whether symbol div64_64 is exported" >&5
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echo $ECHO_N "checking whether symbol div64_64 is exported... $ECHO_C" >&6
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grep -q -E '[[:space:]]div64_64[[:space:]]' $LINUX_OBJ/Module.symvers 2>/dev/null
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rc=$?
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if test $rc -ne 0; then
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export=0
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for file in ; do
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grep -q -E "EXPORT_SYMBOL.*(div64_64)" "$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 $export -eq 0; then
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echo "$as_me:$LINENO: result: no" >&5
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echo "${ECHO_T}no" >&6
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else
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echo "$as_me:$LINENO: result: yes" >&5
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echo "${ECHO_T}yes" >&6
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cat >conftest.c <<_ACEOF
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/* confdefs.h. */
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_ACEOF
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cat confdefs.h >>conftest.$ac_ext
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cat >>conftest.$ac_ext <<_ACEOF
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/* end confdefs.h. */
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#include <asm/div64.h>
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#include <linux/types.h>
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int
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main (void)
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{
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uint64_t i = div64_64(1ULL, 1ULL);
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;
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return 0;
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}
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cat >>confdefs.h <<\_ACEOF
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#define HAVE_DIV64_64 1
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_ACEOF
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rm -Rf build && mkdir -p build
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echo "obj-m := conftest.o" >build/Makefile
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if { ac_try='cp conftest.c build && make modules LINUXINCLUDE="-Iinclude -Iinclude2 -I$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'
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{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
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(eval $ac_try) 2>&5
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ac_status=$?
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echo "$as_me:$LINENO: \$? = $ac_status" >&5
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(exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
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{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
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(eval $ac_try) 2>&5
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ac_status=$?
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echo "$as_me:$LINENO: \$? = $ac_status" >&5
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(exit $ac_status); }; }; then
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fi
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else
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echo "$as_me:$LINENO: result: yes" >&5
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echo "${ECHO_T}yes" >&6
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@ -20559,20 +20545,46 @@ cat >>confdefs.h <<\_ACEOF
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#define HAVE_DIV64_64 1
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_ACEOF
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fi
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else
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echo "$as_me: failed program was:" >&5
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sed 's/^/| /' conftest.$ac_ext >&5
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echo "$as_me:$LINENO: result: no" >&5
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echo "$as_me:$LINENO: checking whether symbol div64_u64 is exported" >&5
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echo $ECHO_N "checking whether symbol div64_u64 is exported... $ECHO_C" >&6
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grep -q -E '[[:space:]]div64_u64[[:space:]]' $LINUX_OBJ/Module.symvers 2>/dev/null
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rc=$?
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if test $rc -ne 0; then
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export=0
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for file in ; do
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grep -q -E "EXPORT_SYMBOL.*(div64_u64)" "$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 $export -eq 0; then
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echo "$as_me:$LINENO: result: no" >&5
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echo "${ECHO_T}no" >&6
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else
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echo "$as_me:$LINENO: result: yes" >&5
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echo "${ECHO_T}yes" >&6
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cat >>confdefs.h <<\_ACEOF
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#define HAVE_DIV64_U64 1
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_ACEOF
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fi
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fi
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else
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echo "$as_me:$LINENO: result: yes" >&5
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echo "${ECHO_T}yes" >&6
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rm -Rf build
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cat >>confdefs.h <<\_ACEOF
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#define HAVE_DIV64_U64 1
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_ACEOF
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fi
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@ -20875,6 +20887,72 @@ _ACEOF
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echo "$as_me:$LINENO: checking whether global_page_state() is available" >&5
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echo $ECHO_N "checking whether global_page_state() is available... $ECHO_C" >&6
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cat >conftest.c <<_ACEOF
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/* confdefs.h. */
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_ACEOF
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cat confdefs.h >>conftest.$ac_ext
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cat >>conftest.$ac_ext <<_ACEOF
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/* end confdefs.h. */
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#include <linux/vmstat.h>
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int
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main (void)
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{
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unsigned long state;
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state = global_page_state(NR_FREE_PAGES);
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;
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return 0;
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}
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_ACEOF
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rm -Rf build && mkdir -p build
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echo "obj-m := conftest.o" >build/Makefile
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if { ac_try='cp conftest.c build && make modules LINUXINCLUDE="-Iinclude -Iinclude2 -I$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'
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{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
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(eval $ac_try) 2>&5
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ac_status=$?
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echo "$as_me:$LINENO: \$? = $ac_status" >&5
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(exit $ac_status); }; } >/dev/null && { ac_try='test -s build/conftest.o'
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{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
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(eval $ac_try) 2>&5
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ac_status=$?
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echo "$as_me:$LINENO: \$? = $ac_status" >&5
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(exit $ac_status); }; }; then
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echo "$as_me:$LINENO: result: yes" >&5
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echo "${ECHO_T}yes" >&6
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cat >>confdefs.h <<\_ACEOF
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#define HAVE_GLOBAL_PAGE_STATE 1
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_ACEOF
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else
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echo "$as_me: failed program was:" >&5
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sed 's/^/| /' conftest.$ac_ext >&5
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echo "$as_me:$LINENO: result: no" >&5
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echo "${ECHO_T}no" >&6
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fi
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rm -Rf build
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echo "$as_me:$LINENO: checking whether free/inactive/active page state is available" >&5
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echo $ECHO_N "checking whether free/inactive/active page state is available... $ECHO_C" >&6
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@ -68,6 +68,7 @@ SPL_AC_KMALLOC_NODE
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SPL_AC_MONOTONIC_CLOCK
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SPL_AC_INODE_I_MUTEX
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SPL_AC_DIV64_64
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SPL_AC_DIV64_U64
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SPL_AC_3ARGS_ON_EACH_CPU
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SPL_AC_KALLSYMS_LOOKUP_NAME
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SPL_AC_GET_VMALLOC_INFO
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@ -75,6 +76,7 @@ SPL_AC_FIRST_ONLINE_PGDAT
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SPL_AC_NEXT_ONLINE_PGDAT
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SPL_AC_NEXT_ZONE
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SPL_AC_GET_ZONE_COUNTS
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SPL_AC_GLOBAL_PAGE_STATE
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SPL_AC_ZONE_STAT_ITEM_FIA
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AC_CONFIG_FILES([
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@ -1,6 +1,8 @@
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#ifndef _SPL_KALLSYMS_COMPAT_H
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#define _SPL_KALLSYMS_COMPAT_H
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#define SYMBOL_POISON ((void*)0xabcddcba)
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#ifdef HAVE_KALLSYMS_LOOKUP_NAME
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#include <linux/kallsyms.h>
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@ -121,15 +121,13 @@ typedef void (*get_zone_counts_t)(unsigned long *, unsigned long *,
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unsigned long *);
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extern get_zone_counts_t get_zone_counts_fn;
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# define get_zone_counts(a,i,f) get_zone_counts_fn(a,i,f)
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# endif /* HAVE_GET_ZONE_COUNTS */
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extern unsigned long spl_global_page_state(int);
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/* Defines designed to simulate enum but large enough to ensure no overlap */
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# define NR_FREE_PAGES 0x8001
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# define NR_INACTIVE 0x8002
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# define NR_ACTIVE 0x8003
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# else
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# error "HAVE_ZONE_STAT_ITEM_FIA and HAVE_GET_ZONE_COUNTS unavailable"
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# endif /* HAVE_GET_ZONE_COUNTS */
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#else
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#define spl_global_page_state(item) global_page_state(item)
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#endif /* HAVE_ZONE_STAT_ITEM_FIA */
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@ -55,7 +55,7 @@ int p0 = 0;
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EXPORT_SYMBOL(p0);
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#ifndef HAVE_KALLSYMS_LOOKUP_NAME
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kallsyms_lookup_name_t spl_kallsyms_lookup_name_fn = NULL;
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kallsyms_lookup_name_t spl_kallsyms_lookup_name_fn = SYMBOL_POISON;
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#endif
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int
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@ -96,10 +96,12 @@ EXPORT_SYMBOL(highbit);
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#if BITS_PER_LONG == 32
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uint64_t __udivdi3(uint64_t dividend, uint64_t divisor)
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{
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#ifdef HAVE_DIV64_64
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#if defined(HAVE_DIV64_64) /* 2.6.22 - 2.6.25 API */
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return div64_64(dividend, divisor);
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#elif defined(HAVE_DIV64_U64) /* 2.6.26 - 2.6.x API */
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return div64_u64(dividend, divisor);
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#else
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/* Taken from a 2.6.24 kernel. */
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/* Implementation from 2.6.30 kernel */
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uint32_t high, d;
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high = divisor >> 32;
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@ -111,10 +113,8 @@ uint64_t __udivdi3(uint64_t dividend, uint64_t divisor)
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} else
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d = divisor;
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do_div(dividend, d);
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return dividend;
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#endif
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return do_div64(dividend, d);
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#endif /* HAVE_DIV64_64, HAVE_DIV64_U64 */
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}
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EXPORT_SYMBOL(__udivdi3);
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@ -126,12 +126,12 @@ uint64_t __umoddi3(uint64_t dividend, uint64_t divisor)
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return dividend - divisor * (dividend / divisor);
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}
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EXPORT_SYMBOL(__umoddi3);
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#endif
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#endif /* BITS_PER_LONG */
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/* NOTE: The strtoxx behavior is solely based on my reading of the Solaris
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* ddi_strtol(9F) man page. I have not verified the behavior of these
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* functions against their Solaris counterparts. It is possible that I
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* may have misinterpretted the man page or the man page is incorrect.
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* may have misinterpreted the man page or the man page is incorrect.
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*/
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int ddi_strtoul(const char *, char **, int, unsigned long *);
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int ddi_strtol(const char *, char **, int, long *);
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|
@ -248,14 +248,20 @@ set_hostid(void)
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"TERM=linux",
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"PATH=/sbin:/usr/sbin:/bin:/usr/bin",
|
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NULL };
|
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int rc;
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/* Doing address resolution in the kernel is tricky and just
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* not a good idea in general. So to set the proper 'hw_serial'
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* use the usermodehelper support to ask '/bin/sh' to run
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* '/usr/bin/hostid' and redirect the result to /proc/sys/spl/hostid
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* for us to use. It's a horific solution but it will do for now.
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* for us to use. It's a horrific solution but it will do for now.
|
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*/
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return call_usermodehelper(sh_path, argv, envp, 1);
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rc = call_usermodehelper(sh_path, argv, envp, 1);
|
||||
if (rc)
|
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printk("SPL: Failed user helper '%s %s %s', rc = %d\n",
|
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argv[0], argv[1], argv[2], rc);
|
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|
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return rc;
|
||||
}
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uint32_t
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|
@ -273,9 +279,7 @@ zone_get_hostid(void *zone)
|
|||
}
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EXPORT_SYMBOL(zone_get_hostid);
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#ifdef HAVE_KALLSYMS_LOOKUP_NAME
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#define set_kallsyms_lookup_name() (0)
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#else
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#ifndef HAVE_KALLSYMS_LOOKUP_NAME
|
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/*
|
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* Because kallsyms_lookup_name() is no longer exported in the
|
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* mainline kernel we are forced to resort to somewhat drastic
|
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|
|
@ -303,9 +307,10 @@ set_kallsyms_lookup_name(void)
|
|||
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||||
rc = call_usermodehelper(sh_path, argv, envp, 1);
|
||||
if (rc)
|
||||
return rc;
|
||||
printk("SPL: Failed user helper '%s %s %s', rc = %d\n",
|
||||
argv[0], argv[1], argv[2], rc);
|
||||
|
||||
return spl_kmem_init_kallsyms_lookup();
|
||||
return rc;
|
||||
}
|
||||
#endif
|
||||
|
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|
|
@ -337,8 +342,13 @@ static int __init spl_init(void)
|
|||
if ((rc = set_hostid()))
|
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GOTO(out7, rc = -EADDRNOTAVAIL);
|
||||
|
||||
#ifndef HAVE_KALLSYMS_LOOKUP_NAME
|
||||
if ((rc = set_kallsyms_lookup_name()))
|
||||
GOTO(out7, rc = -EADDRNOTAVAIL);
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||||
#endif /* HAVE_KALLSYMS_LOOKUP_NAME */
|
||||
|
||||
if ((rc = spl_kmem_init_kallsyms_lookup()))
|
||||
GOTO(out7, rc);
|
||||
|
||||
printk("SPL: Loaded Solaris Porting Layer v%s\n", SPL_META_VERSION);
|
||||
RETURN(rc);
|
||||
|
|
|
|||
|
|
@ -80,29 +80,30 @@ vmem_t *zio_arena = NULL;
|
|||
EXPORT_SYMBOL(zio_arena);
|
||||
|
||||
#ifndef HAVE_GET_VMALLOC_INFO
|
||||
get_vmalloc_info_t get_vmalloc_info_fn = NULL;
|
||||
get_vmalloc_info_t get_vmalloc_info_fn = SYMBOL_POISON;
|
||||
EXPORT_SYMBOL(get_vmalloc_info_fn);
|
||||
#endif /* HAVE_GET_VMALLOC_INFO */
|
||||
|
||||
#ifndef HAVE_FIRST_ONLINE_PGDAT
|
||||
first_online_pgdat_t first_online_pgdat_fn = NULL;
|
||||
first_online_pgdat_t first_online_pgdat_fn = SYMBOL_POISON;
|
||||
EXPORT_SYMBOL(first_online_pgdat_fn);
|
||||
#endif /* HAVE_FIRST_ONLINE_PGDAT */
|
||||
|
||||
#ifndef HAVE_NEXT_ONLINE_PGDAT
|
||||
next_online_pgdat_t next_online_pgdat_fn = NULL;
|
||||
next_online_pgdat_t next_online_pgdat_fn = SYMBOL_POISON;
|
||||
EXPORT_SYMBOL(next_online_pgdat_fn);
|
||||
#endif /* HAVE_NEXT_ONLINE_PGDAT */
|
||||
|
||||
#ifndef HAVE_NEXT_ZONE
|
||||
next_zone_t next_zone_fn = NULL;
|
||||
next_zone_t next_zone_fn = SYMBOL_POISON;
|
||||
EXPORT_SYMBOL(next_zone_fn);
|
||||
#endif /* HAVE_NEXT_ZONE */
|
||||
|
||||
#ifndef HAVE_ZONE_STAT_ITEM_FIA
|
||||
# ifndef HAVE_GET_ZONE_COUNTS
|
||||
get_zone_counts_t get_zone_counts_fn = NULL;
|
||||
get_zone_counts_t get_zone_counts_fn = SYMBOL_POISON;
|
||||
EXPORT_SYMBOL(get_zone_counts_fn);
|
||||
# endif /* HAVE_GET_ZONE_COUNTS */
|
||||
|
||||
unsigned long
|
||||
spl_global_page_state(int item)
|
||||
|
|
@ -126,12 +127,13 @@ spl_global_page_state(int item)
|
|||
return active;
|
||||
}
|
||||
|
||||
# ifdef HAVE_GLOBAL_PAGE_STATE
|
||||
return global_page_state((enum zone_stat_item)item);
|
||||
# else
|
||||
return 0; /* Unsupported */
|
||||
# endif /* HAVE_GLOBAL_PAGE_STATE */
|
||||
}
|
||||
EXPORT_SYMBOL(spl_global_page_state);
|
||||
# else
|
||||
# error "HAVE_ZONE_STAT_ITEM_FIA and HAVE_GET_ZONE_COUNTS unavailable"
|
||||
# endif /* HAVE_GET_ZONE_COUNTS */
|
||||
#endif /* HAVE_ZONE_STAT_ITEM_FIA */
|
||||
|
||||
pgcnt_t
|
||||
|
|
@ -1785,8 +1787,8 @@ spl_kmem_init_globals(void)
|
|||
}
|
||||
|
||||
/* Solaris default values */
|
||||
swapfs_minfree = MAX(2*1024*1024 / PAGE_SIZE, physmem / 8);
|
||||
swapfs_reserve = MIN(4*1024*1024 / PAGE_SIZE, physmem / 16);
|
||||
swapfs_minfree = MAX(2*1024*1024 >> PAGE_SHIFT, physmem >> 3);
|
||||
swapfs_reserve = MIN(4*1024*1024 >> PAGE_SHIFT, physmem >> 4);
|
||||
}
|
||||
|
||||
/*
|
||||
|
|
@ -1839,8 +1841,6 @@ spl_kmem_init_kallsyms_lookup(void)
|
|||
printk(KERN_ERR "Error: Unknown symbol get_zone_counts\n");
|
||||
return -EFAULT;
|
||||
}
|
||||
# else
|
||||
# error "HAVE_ZONE_STAT_ITEM_FIA and HAVE_GET_ZONE_COUNTS unavailable"
|
||||
# endif /* HAVE_GET_ZONE_COUNTS */
|
||||
#endif /* HAVE_ZONE_STAT_ITEM_FIA */
|
||||
|
||||
|
|
|
|||
|
|
@ -503,7 +503,7 @@ proc_dokallsyms_lookup_name(struct ctl_table *table, int write,
|
|||
|
||||
if (write) {
|
||||
/* This may only be set once at module load time */
|
||||
if (spl_kallsyms_lookup_name_fn)
|
||||
if (spl_kallsyms_lookup_name_fn != SYMBOL_POISON)
|
||||
RETURN(-EEXIST);
|
||||
|
||||
/* We can't use proc_doulongvec_minmax() in the write
|
||||
|
|
|
|||
|
|
@ -60,9 +60,9 @@ __gethrtime(void) {
|
|||
/* Deal with signed/unsigned mismatch */
|
||||
return (hrtime_t)(res & ~(1ULL << 63));
|
||||
#else
|
||||
int64_t j = get_jiffies_64();
|
||||
uint64_t j = get_jiffies_64();
|
||||
|
||||
return j * NSEC_PER_SEC / HZ;
|
||||
return (hrtime_t)(j * NSEC_PER_SEC / HZ);
|
||||
#endif
|
||||
}
|
||||
EXPORT_SYMBOL(__gethrtime);
|
||||
|
|
|
|||
|
|
@ -327,7 +327,7 @@ splat_list_test6(struct file *file, void *arg)
|
|||
|
||||
/* Remove all odd items from the queue */
|
||||
splat_vprint(file, SPLAT_LIST_TEST6_NAME,
|
||||
"Removing %d odd items from the list\n", list_size / 2);
|
||||
"Removing %d odd items from the list\n", list_size >> 1);
|
||||
for (li = list_head(&list); li != NULL; li = list_next(&list, li)) {
|
||||
if (li->li_data % 2 == 1) {
|
||||
li_prev = list_prev(&list, li);
|
||||
|
|
|
|||
|
|
@ -39,6 +39,9 @@
|
|||
/* div64_64() is available */
|
||||
#undef HAVE_DIV64_64
|
||||
|
||||
/* div64_u64() is available */
|
||||
#undef HAVE_DIV64_U64
|
||||
|
||||
/* Define to 1 if you have the <dlfcn.h> header file. */
|
||||
#undef HAVE_DLFCN_H
|
||||
|
||||
|
|
@ -60,6 +63,9 @@
|
|||
/* get_zone_counts() is available */
|
||||
#undef HAVE_GET_ZONE_COUNTS
|
||||
|
||||
/* global_page_state() is available */
|
||||
#undef HAVE_GLOBAL_PAGE_STATE
|
||||
|
||||
/* init_utsname() is available */
|
||||
#undef HAVE_INIT_UTSNAME
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue