linux-kernel - [RFC 04/12] module: add a for_each_modinfo

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Message-Id: <20230311051712.4095040-5-mcgrof@kernel.org>
Date:   Fri, 10 Mar 2023 21:17:04 -0800
From:   Luis Chamberlain <mcgrof@...nel.org>
To:     linux-modules@...r.kernel.org, linux-kernel@...r.kernel.org,
        pmladek@...e.com, david@...hat.com, petr.pavlu@...e.com,
        prarit@...hat.com
Cc:     christophe.leroy@...roup.eu, song@...nel.org, mcgrof@...nel.org,
        torvalds@...ux-foundation.org
Subject: [RFC 04/12] module: add a for_each_modinfo_entry()

Add a for_each_modinfo_entry() to make it easier to read and use.
This produces no functional changes but makes this code easiert
to read as we are used to with loops in the kernel and trims more
lines of code.

Signed-off-by: Luis Chamberlain <mcgrof@...nel.org>
---
 kernel/module/internal.h | 3 +++
 kernel/module/main.c     | 5 +----
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/kernel/module/internal.h b/kernel/module/internal.h
index 1fa2328636ec..6ae29bb8836f 100644
--- a/kernel/module/internal.h
+++ b/kernel/module/internal.h
@@ -98,6 +98,9 @@ size_t module_flags_taint(unsigned long taints, char *buf);
 
 char *module_next_tag_pair(char *string, unsigned long *secsize);
 
+#define for_each_modinfo_entry(entry, info, name) \
+	for (entry = get_modinfo(info, name); entry; entry = get_next_modinfo(info, name, entry))
+
 static inline void module_assert_mutex_or_preempt(void)
 {
 #ifdef CONFIG_LOCKDEP
diff --git a/kernel/module/main.c b/kernel/module/main.c
index 50364707c0cd..3f7c8634cf06 100644
--- a/kernel/module/main.c
+++ b/kernel/module/main.c
@@ -1075,12 +1075,9 @@ static int verify_namespace_is_imported(const struct load_info *info,
 
 	namespace = kernel_symbol_namespace(sym);
 	if (namespace && namespace[0]) {
-		imported_namespace = get_modinfo(info, "import_ns");
-		while (imported_namespace) {
+		for_each_modinfo_entry(imported_namespace, info, "import_ns") {
 			if (strcmp(namespace, imported_namespace) == 0)
 				return 0;
-			imported_namespace = get_next_modinfo(
-				info, "import_ns", imported_namespace);
 		}
 #ifdef CONFIG_MODULE_ALLOW_MISSING_NAMESPACE_IMPORTS
 		pr_warn(
-- 
2.39.1