[PATCH 5.10 072/157] module: merge repetitive strings in module_sig_check()

Greg Kroah-Hartman
2021-03-22T12:49:31Z

From: Sergey Shtylyov <s.shtylyov@omprussia.ru>

[ Upstream commit 705e9195187d85249fbb0eaa844b1604a98fbc9a ]

The 'reason' variable in module_sig_check() points to 3 strings across
the *switch* statement, all needlessly starting with the same text.
Let's put the starting text into the pr_notice() call -- it saves 21
bytes of the object code (x86 gcc 10.2.1).

Suggested-by: Joe Perches <joe@perches.com>
Reviewed-by: Miroslav Benes <mbenes@suse.cz>
Signed-off-by: Sergey Shtylyov <s.shtylyov@omprussia.ru>
Signed-off-by: Jessica Yu <jeyu@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
kernel/module.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/kernel/module.c b/kernel/module.c
index 94f926473e35..3b6dd8200d3d 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -2922,16 +2922,17 @@ static int module_sig_check(struct load_info *info, int flags)
* enforcing, certain errors are non-fatal.
*/
case -ENODATA:
- reason = "Loading of unsigned module";
+ reason = "unsigned module";
goto decide;
case -ENOPKG:
- reason = "Loading of module with unsupported crypto";
+ reason = "module with unsupported crypto";
goto decide;
case -ENOKEY:
- reason = "Loading of module with unavailable key";
+ reason = "module with unavailable key";
decide:
if (is_module_sig_enforced()) {
- pr_notice("%s: %s is rejected\n", info->name, reason);
+ pr_notice("%s: loading of %s is rejected\n",
+ info->name, reason);
return -EKEYREJECTED;
}

--
2.30.1