crypto: fips - annotate fips_enable() with __init to free init memory after boot

The fips_enable() function is only invoked early during kernel boot via the
__setup() macro ("fips=" command line parameter), and is never used again
after initialization completes.

Annotating it with __init places the function in the .init.text section,
allowing the kernel to free its memory after init (when freeing_initmem()
runs), reducing runtime memory footprint.

This is a standard practice for setup/early-parse functions and has no
functional impact — the parsing logic, return values, and fips mode
setting behavior remain unchanged.

Signed-off-by: Can Peng <pengcan@kylinos.cn>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/crypto/fips.c b/crypto/fips.c
index 65d2bc070a263638ae42ee91a90d415858074211..c59711248d956932a86f6af307ff408b8bc0ceb3 100644 (file)
--- a/crypto/fips.c
+++ b/crypto/fips.c
@@ -22,7 +22,7 @@ ATOMIC_NOTIFIER_HEAD(fips_fail_notif_chain);
 EXPORT_SYMBOL_GPL(fips_fail_notif_chain);
 
 /* Process kernel command-line parameter at boot time. fips=0 or fips=1 */
-static int fips_enable(char *str)
+static int __init fips_enable(char *str)
 {
        if (kstrtoint(str, 0, &fips_enabled))
                return 0;