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-rwxr-xr-xscripts/mksysmap11
1 files changed, 10 insertions, 1 deletions
diff --git a/scripts/mksysmap b/scripts/mksysmap
index 41ad4605aeef..ff91ec8ecca7 100755
--- a/scripts/mksysmap
+++ b/scripts/mksysmap
@@ -4,7 +4,7 @@
# tools to retrieve the actual addresses of symbols in the kernel.
#
# Usage
-# mksysmap vmlinux System.map
+# mksysmap vmlinux System.map [exclude]
#####
@@ -52,4 +52,13 @@ ${NM} -n ${1} | sed >${2} -e "
# for LoongArch?
/ L0$/d
+
+# ---------------------------------------------------------------------------
+# Ignored kallsyms symbols
+#
+# If the 3rd parameter exists, symbols from it will be omitted from the output.
+# This makes kallsyms have the identical symbol lists in the step 1 and 2.
+# Without this, the step2 would get new symbols generated by scripts/kallsyms.c
+# when CONFIG_KALLSYMS_ALL is enabled. That might require one more pass.
+$(if [ $# -ge 3 ]; then ${NM} ${3} | sed -n '/ U /!s:.* \([^ ]*\)$:/ \1$/d:p'; fi)
"