scripts/link-vmlinux.sh: only filter kernel symbols for arm

Actually CONFIG_PAGE_OFFSET isn't same with PAGE_OFFSET, so
it isn't easy to figue out PAGE_OFFSET defined in header
file from scripts.

Because CONFIG_PAGE_OFFSET may not be defined in some ARCHs(
64bit ARCH), or defined as bogus value in !MMU case, so
this patch only applys the filter on ARM when CONFIG_PAGE_OFFSET
is defined as the original problem is only on ARM.

Cc: <stable@vger.kernel.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Fixes: f6537f2f0eba4eba3354e48dbe3047db6d8b6254
Singed-off-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh
index 32b10f5..2dcb377 100644 (file)
--- a/scripts/link-vmlinux.sh
+++ b/scripts/link-vmlinux.sh
@@ -82,7 +82,9 @@ kallsyms()
                kallsymopt="${kallsymopt} --all-symbols"
        fi
 
-       kallsymopt="${kallsymopt} --page-offset=$CONFIG_PAGE_OFFSET"
+       if [ -n "${CONFIG_ARM}" ] && [ -n "${CONFIG_PAGE_OFFSET}" ]; then
+               kallsymopt="${kallsymopt} --page-offset=$CONFIG_PAGE_OFFSET"
+       fi
 
        local aflags="${KBUILD_AFLAGS} ${KBUILD_AFLAGS_KERNEL}               \
                      ${NOSTDINC_FLAGS} ${LINUXINCLUDE} ${KBUILD_CPPFLAGS}"