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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
@@ -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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