linux-kernel - [PATCH v6 6/8] selftests/kvm: Replace attribute with macro

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Message-ID: <e05d7b658c4685957152074d4090e8527da718e1.1697196663.git.maciej.wieczor-retman@intel.com>
Date:   Fri, 13 Oct 2023 13:36:30 +0200
From:   Maciej Wieczor-Retman <maciej.wieczor-retman@...el.com>
To:     Paolo Bonzini <pbonzini@...hat.com>, Shuah Khan <shuah@...nel.org>
Cc:     ilpo.jarvinen@...ux.intel.com, kvm@...r.kernel.org,
        linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v6 6/8] selftests/kvm: Replace attribute with macro

The __printf() macro is used in many tools in the linux kernel to
validate the format specifiers in functions that use printf. The kvm
selftest uses it without putting it in a macro definition while it
also imports the kselftests.h header where the macro attribute is
defined.

Use __printf() from kselftests.h instead of the full attribute.

Signed-off-by: Maciej Wieczor-Retman <maciej.wieczor-retman@...el.com>
---
Changelog v6:
- Make the motivation behind the patch more explicit in the patch
  message.

Changelog v2:
- Reword patch message.
- Use __printf() on test_assert().

 tools/testing/selftests/kvm/include/test_util.h | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/tools/testing/selftests/kvm/include/test_util.h b/tools/testing/selftests/kvm/include/test_util.h
index 7e614adc6cf4..8e5f413a593d 100644
--- a/tools/testing/selftests/kvm/include/test_util.h
+++ b/tools/testing/selftests/kvm/include/test_util.h
@@ -33,7 +33,7 @@ static inline int _no_printf(const char *format, ...) { return 0; }
 #define pr_info(...) _no_printf(__VA_ARGS__)
 #endif
 
-void print_skip(const char *fmt, ...) __attribute__((format(printf, 1, 2)));
+void __printf(1, 2) print_skip(const char *fmt, ...);
 #define __TEST_REQUIRE(f, fmt, ...)				\
 do {								\
 	if (!(f))						\
@@ -46,9 +46,9 @@ ssize_t test_write(int fd, const void *buf, size_t count);
 ssize_t test_read(int fd, void *buf, size_t count);
 int test_seq_read(const char *path, char **bufp, size_t *sizep);
 
-void test_assert(bool exp, const char *exp_str,
-		 const char *file, unsigned int line, const char *fmt, ...)
-		__attribute__((format(printf, 5, 6)));
+void __printf(5, 6) test_assert(bool exp, const char *exp_str,
+				const char *file, unsigned int line,
+				const char *fmt, ...);
 
 #define TEST_ASSERT(e, fmt, ...) \
 	test_assert((e), #e, __FILE__, __LINE__, fmt, ##__VA_ARGS__)
-- 
2.42.0