linux-kernel - [PATCH 07/13] objtool: Consolidate option validation

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Message-ID: <8f886502fda1d15f39d7351b70d4ebe5903da627.1741975349.git.jpoimboe@kernel.org>
Date: Fri, 14 Mar 2025 12:29:05 -0700
From: Josh Poimboeuf <jpoimboe@...nel.org>
To: x86@...nel.org
Cc: linux-kernel@...r.kernel.org,
	Peter Zijlstra <peterz@...radead.org>,
	Brendan Jackman <jackmanb@...gle.com>,
	Nathan Chancellor <nathan@...nel.org>
Subject: [PATCH 07/13] objtool: Consolidate option validation

The option validations are a bit scattered, consolidate them.

Signed-off-by: Josh Poimboeuf <jpoimboe@...nel.org>
---
 tools/objtool/builtin-check.c | 68 +++++++++++++----------------------
 1 file changed, 24 insertions(+), 44 deletions(-)

diff --git a/tools/objtool/builtin-check.c b/tools/objtool/builtin-check.c
index c7275cf7641b..36d81a455b01 100644
--- a/tools/objtool/builtin-check.c
+++ b/tools/objtool/builtin-check.c
@@ -131,6 +131,26 @@ int cmd_parse_options(int argc, const char **argv, const char * const usage[])
 
 static bool opts_valid(void)
 {
+	if (opts.mnop && !opts.mcount) {
+		ERROR("--mnop requires --mcount");
+		return false;
+	}
+
+	if (opts.noinstr && !opts.link) {
+		ERROR("--noinstr requires --link");
+		return false;
+	}
+
+	if (opts.ibt && !opts.link) {
+		ERROR("--ibt requires --link");
+		return false;
+	}
+
+	if (opts.unret && !opts.link) {
+		ERROR("--unret requires --link");
+		return false;
+	}
+
 	if (opts.hack_jump_label	||
 	    opts.hack_noinstr		||
 	    opts.ibt			||
@@ -158,45 +178,6 @@ static bool opts_valid(void)
 	return false;
 }
 
-static bool mnop_opts_valid(void)
-{
-	if (opts.mnop && !opts.mcount) {
-		ERROR("--mnop requires --mcount");
-		return false;
-	}
-
-	return true;
-}
-
-static bool link_opts_valid(struct objtool_file *file)
-{
-	if (opts.link)
-		return true;
-
-	if (has_multiple_files(file->elf)) {
-		ERROR("Linked object detected, forcing --link");
-		opts.link = true;
-		return true;
-	}
-
-	if (opts.noinstr) {
-		ERROR("--noinstr requires --link");
-		return false;
-	}
-
-	if (opts.ibt) {
-		ERROR("--ibt requires --link");
-		return false;
-	}
-
-	if (opts.unret) {
-		ERROR("--unret requires --link");
-		return false;
-	}
-
-	return true;
-}
-
 int objtool_run(int argc, const char **argv)
 {
 	const char *objname;
@@ -216,11 +197,10 @@ int objtool_run(int argc, const char **argv)
 	if (!file)
 		return 1;
 
-	if (!mnop_opts_valid())
-		return 1;
-
-	if (!link_opts_valid(file))
-		return 1;
+	if (!opts.link && has_multiple_files(file->elf)) {
+		ERROR("Linked object detected, forcing --link");
+		opts.link = true;
+	}
 
 	ret = check(file);
 	if (ret)
-- 
2.48.1