linux-kernel - [PATCH] kallsyms: Change func signature for cleanup_symbol

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Date:   Fri, 25 Aug 2023 13:20:36 -0700
From:   Yonghong Song <yonghong.song@...ux.dev>
To:     Kees Cook <keescook@...omium.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Petr Mladek <pmladek@...e.com>, Song Liu <song@...nel.org>,
        Steven Rostedt <rostedt@...dmis.org>
Cc:     Fangrui Song <maskray@...gle.com>, kernel-team@...com,
        Leizhen <thunder.leizhen@...wei.com>,
        linux-kernel@...r.kernel.org, llvm@...ts.linux.dev
Subject: [PATCH] kallsyms: Change func signature for cleanup_symbol_name()

All users of cleanup_symbol_name() do not use the return value.
So let us change the return value of cleanup_symbol_name() to
'void' to reflect its usage pattern.

Suggested-by: Nick Desaulniers <ndesaulniers@...gle.com>
Signed-off-by: Yonghong Song <yonghong.song@...ux.dev>
---
 kernel/kallsyms.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

NOTE:
This patch needs to be applied after the following patch:
https://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git/commit/?id=33f0467fe069

diff --git a/kernel/kallsyms.c b/kernel/kallsyms.c
index e12d26c10dba..18edd57b5fe8 100644
--- a/kernel/kallsyms.c
+++ b/kernel/kallsyms.c
@@ -163,12 +163,12 @@ unsigned long kallsyms_sym_address(int idx)
 	return kallsyms_relative_base - 1 - kallsyms_offsets[idx];
 }
 
-static bool cleanup_symbol_name(char *s)
+static void cleanup_symbol_name(char *s)
 {
 	char *res;
 
 	if (!IS_ENABLED(CONFIG_LTO_CLANG))
-		return false;
+		return;
 
 	/*
 	 * LLVM appends various suffixes for local functions and variables that
@@ -178,12 +178,10 @@ static bool cleanup_symbol_name(char *s)
 	 * - foo.llvm.[0-9a-f]+
 	 */
 	res = strstr(s, ".llvm.");
-	if (res) {
+	if (res)
 		*res = '\0';
-		return true;
-	}
 
-	return false;
+	return;
 }
 
 static int compare_symbol_name(const char *name, char *namebuf)
-- 
2.34.1