crypto: user - Add crypto_stats_init

This patch add the crypto_stats_init() function.
This will permit to remove some ifdef from __crypto_register_alg().
Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

crypto/algapi.c

@@ -258,9 +258,7 @@ static struct crypto_larval *__crypto_register_alg(struct crypto_alg *alg)
 	list_add(&alg->cra_list, &crypto_alg_list);
 	list_add(&larval->alg.cra_list, &crypto_alg_list);
 
-#ifdef CONFIG_CRYPTO_STATS
-	memset(&alg->stats, 0, sizeof(alg->stats));
-#endif
+	crypto_stats_init(alg);
 
 out:
 	return larval;
@@ -1073,6 +1071,12 @@ int crypto_type_has_alg(const char *name, const struct crypto_type *frontend,
 EXPORT_SYMBOL_GPL(crypto_type_has_alg);
 
 #ifdef CONFIG_CRYPTO_STATS
+void crypto_stats_init(struct crypto_alg *alg)
+{
+	memset(&alg->stats, 0, sizeof(alg->stats));
+}
+EXPORT_SYMBOL_GPL(crypto_stats_init);
+
 void crypto_stats_get(struct crypto_alg *alg)
 {
 	crypto_alg_get(alg);

include/linux/crypto.h

@@ -614,6 +614,7 @@ struct crypto_alg {
 } CRYPTO_MINALIGN_ATTR;
 
 #ifdef CONFIG_CRYPTO_STATS
+void crypto_stats_init(struct crypto_alg *alg);
 void crypto_stats_get(struct crypto_alg *alg);
 void crypto_stats_ablkcipher_encrypt(unsigned int nbytes, int ret, struct crypto_alg *alg);
 void crypto_stats_ablkcipher_decrypt(unsigned int nbytes, int ret, struct crypto_alg *alg);
@@ -635,6 +636,8 @@ void crypto_stats_rng_generate(struct crypto_alg *alg, unsigned int dlen, int re
 void crypto_stats_skcipher_encrypt(unsigned int cryptlen, int ret, struct crypto_alg *alg);
 void crypto_stats_skcipher_decrypt(unsigned int cryptlen, int ret, struct crypto_alg *alg);
 #else
+static inline void crypto_stats_init(struct crypto_alg *alg)
+{}
 static inline void crypto_stats_get(struct crypto_alg *alg)
 {}
 static inline void crypto_stats_ablkcipher_encrypt(unsigned int nbytes, int ret, struct crypto_alg *alg)