linux-kernel - [RFC PATCH v2 10/17] objtool: Record symbol name max length

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Message-ID: <20250619145659.1377970-11-alexandre.chartre@oracle.com>
Date: Thu, 19 Jun 2025 16:56:52 +0200
From: Alexandre Chartre <alexandre.chartre@...cle.com>
To: linux-kernel@...r.kernel.org, mingo@...nel.org, jpoimboe@...nel.org,
        peterz@...radead.org
Cc: alexandre.chartre@...cle.com
Subject: [RFC PATCH v2 10/17] 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>
---
 tools/objtool/check.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/tools/objtool/check.c b/tools/objtool/check.c
index 947fe57e9a6d..413860f2d7fa 100644
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -35,6 +35,8 @@ 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)
 {
@@ -2459,6 +2461,7 @@ 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, func) {
 		if (func->type == STT_NOTYPE && strstarts(func->name, ".L"))
@@ -2485,6 +2488,10 @@ 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;
-- 
2.43.5