linux-kernel - [PATCH v3 31/64] objtool: Avoid emptying lists for duplicate sections

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Message-ID: <ee0570241895ca7fba2b31f094a66b1af45adafa.1750980517.git.jpoimboe@kernel.org>
Date: Thu, 26 Jun 2025 16:55:18 -0700
From: Josh Poimboeuf <jpoimboe@...nel.org>
To: x86@...nel.org
Cc: linux-kernel@...r.kernel.org,
	Petr Mladek <pmladek@...e.com>,
	Miroslav Benes <mbenes@...e.cz>,
	Joe Lawrence <joe.lawrence@...hat.com>,
	live-patching@...r.kernel.org,
	Song Liu <song@...nel.org>,
	laokz <laokz@...mail.com>,
	Jiri Kosina <jikos@...nel.org>,
	Marcos Paulo de Souza <mpdesouza@...e.com>,
	Weinan Liu <wnliu@...gle.com>,
	Fazla Mehrab <a.mehrab@...edance.com>,
	Chen Zhongjin <chenzhongjin@...wei.com>,
	Puranjay Mohan <puranjay@...nel.org>,
	Dylan Hatch <dylanbhatch@...gle.com>
Subject: [PATCH v3 31/64] objtool: Avoid emptying lists for duplicate sections

When a to-be-created section already exists, there's no point in
emptying the various lists if their respective sections already exist.
In fact it's better to leave them intact as they might get used later.

Signed-off-by: Josh Poimboeuf <jpoimboe@...nel.org>
---
 tools/objtool/check.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/tools/objtool/check.c b/tools/objtool/check.c
index 9ffde9389c53..87d2ba7739d5 100644
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -634,7 +634,6 @@ static int create_static_call_sections(struct objtool_file *file)
 
 	sec = find_section_by_name(file->elf, ".static_call_sites");
 	if (sec) {
-		INIT_LIST_HEAD(&file->static_call_list);
 		WARN("file already has .static_call_sites section, skipping");
 		return 0;
 	}
@@ -850,7 +849,6 @@ static int create_cfi_sections(struct objtool_file *file)
 
 	sec = find_section_by_name(file->elf, ".cfi_sites");
 	if (sec) {
-		INIT_LIST_HEAD(&file->call_list);
 		WARN("file already has .cfi_sites section, skipping");
 		return 0;
 	}
@@ -899,7 +897,6 @@ static int create_mcount_loc_sections(struct objtool_file *file)
 
 	sec = find_section_by_name(file->elf, "__mcount_loc");
 	if (sec) {
-		INIT_LIST_HEAD(&file->mcount_loc_list);
 		WARN("file already has __mcount_loc section, skipping");
 		return 0;
 	}
@@ -944,7 +941,6 @@ static int create_direct_call_sections(struct objtool_file *file)
 
 	sec = find_section_by_name(file->elf, ".call_sites");
 	if (sec) {
-		INIT_LIST_HEAD(&file->call_list);
 		WARN("file already has .call_sites section, skipping");
 		return 0;
 	}
-- 
2.49.0