linux-kernel - [tip: objtool/core] objtool: Record symbol name max length

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Message-ID: <176397551514.498.7436536674784082848.tip-bot2@tip-bot2>
Date: Mon, 24 Nov 2025 09:11:55 -0000
From: "tip-bot2 for Alexandre Chartre" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: Alexandre Chartre <alexandre.chartre@...cle.com>,
 "Peter Zijlstra (Intel)" <peterz@...radead.org>,
 Josh Poimboeuf <jpoimboe@...nel.org>, x86@...nel.org,
 linux-kernel@...r.kernel.org
Subject: [tip: objtool/core] objtool: Record symbol name max length

The following commit has been merged into the objtool/core branch of tip:

Commit-ID:     de0248fbbf999d0fd3ca2aa5ba515ab78703d129
Gitweb:        https://git.kernel.org/tip/de0248fbbf999d0fd3ca2aa5ba515ab78703d129
Author:        Alexandre Chartre <alexandre.chartre@...cle.com>
AuthorDate:    Fri, 21 Nov 2025 10:53:19 +01:00
Committer:     Peter Zijlstra <peterz@...radead.org>
CommitterDate: Fri, 21 Nov 2025 15:30:09 +01:00

objtool: Record symbol name max length

Keep track of the maximum length of symbol names. This will help
formatting the code flow between different functions.

Signed-off-by: Alexandre Chartre <alexandre.chartre@...cle.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Acked-by: Josh Poimboeuf <jpoimboe@...nel.org>
Link: https://patch.msgid.link/20251121095340.464045-10-alexandre.chartre@oracle.com
---
 tools/objtool/check.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/tools/objtool/check.c b/tools/objtool/check.c
index 6573056..0fbf0eb 100644
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -37,6 +37,8 @@ static struct cfi_state init_cfi;
 static struct cfi_state func_cfi;
 static struct cfi_state force_undefined_cfi;
 
+static size_t sym_name_max_len;
+
 struct instruction *find_insn(struct objtool_file *file,
 			      struct section *sec, unsigned long offset)
 {
@@ -2463,6 +2465,7 @@ static bool is_profiling_func(const char *name)
 static int classify_symbols(struct objtool_file *file)
 {
 	struct symbol *func;
+	size_t len;
 
 	for_each_sym(file->elf, func) {
 		if (is_notype_sym(func) && strstarts(func->name, ".L"))
@@ -2489,6 +2492,10 @@ static int classify_symbols(struct objtool_file *file)
 
 		if (is_profiling_func(func->name))
 			func->profiling_func = true;
+
+		len = strlen(func->name);
+		if (len > sym_name_max_len)
+			sym_name_max_len = len;
 	}
 
 	return 0;