[RFC PATCH v2 2/3] kbuild: Sort ORC unwind tables in vmlinux link phase

[shile.zhang@linux.alibaba.com]

From: Shile Zhang <shile.zhang@linux.alibaba.com>

Sort the ORC unwind tables in vmlinux link phase, only for ORC unwinder.

Signed-off-by: Shile Zhang <shile.zhang@linux.alibaba.com>
---
 scripts/link-vmlinux.sh | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh
index 06495379fcd8..dea7797fcbdc 100755
--- a/scripts/link-vmlinux.sh
+++ b/scripts/link-vmlinux.sh
@@ -183,6 +183,11 @@ sortextable()
 	${objtree}/scripts/sortextable ${1}
 }
 
+sortorctable()
+{
+	${objtree}/scripts/sortorctable ${1}
+}
+
 # Delete output files in case of error
 cleanup()
 {
@@ -303,6 +308,15 @@ if [ -n "${CONFIG_BUILDTIME_EXTABLE_SORT}" ]; then
 	sortextable vmlinux
 fi
 
+if [ -n "${CONFIG_UNWINDER_ORC}" ]; then
+	info SORTORC vmlinux
+	if ! sortorctable vmlinux; then
+		echo >&2 Failed to sort ORC unwind tables
+		echo >&2 Check what is wrong and try again
+		exit 1
+	fi
+fi
+
 info SYSMAP System.map
 mksysmap vmlinux System.map
 
-- 
2.24.0.rc2