From bea5b74504742f1b51b815bcaf9a70bddbc49ce3 Mon Sep 17 00:00:00 2001
From: Arnd Bergmann <arnd@arndb.de>
Date: Mon, 6 Mar 2023 11:14:51 +0100
Subject: [PATCH] kallsyms: expand symbol name into comment for debugging
The assembler output of kallsyms.c is not meant for people to understand,
and is generally not helpful when debugging "Inconsistent kallsyms data"
warnings. I have previously struggled with these, but found it helpful
to list which symbols changed between the first and second pass in the
.tmp_vmlinux.kallsyms*.S files.
As this file is preprocessed, it's possible to add a C-style multiline
comment with the full type/name tuple.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---
scripts/kallsyms.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/scripts/kallsyms.c b/scripts/kallsyms.c
index a239a87e7bec1..ea1e3d3aaa6b1 100644
--- a/scripts/kallsyms.c
+++ b/scripts/kallsyms.c
@@ -525,7 +525,8 @@ static void write_src(void)
table[i]->addr);
exit(EXIT_FAILURE);
}
- printf("\t.long\t%#x\n", (int)offset);
+ expand_symbol(table[i]->sym, table[i]->len, buf);
+ printf("\t.long\t%#x /* %s */\n", (int)offset, buf);
} else if (!symbol_absolute(table[i])) {
output_address(table[i]->addr);
} else {
--
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