From 1411b5218adbcf1d45ddb260db5553c52e8d917c Mon Sep 17 00:00:00 2001
From: Michael Ellerman <mpe@ellerman.id.au>
Date: Thu, 3 May 2018 22:29:29 +1000
Subject: [PATCH] crypto: vmx - Remove overly verbose printk from AES init routines
Git-commit: 1411b5218adbcf1d45ddb260db5553c52e8d917c
Patch-mainline: v4.18-rc1
References: bsc#1051510
In the vmx AES init routines we do a printk(KERN_INFO ...) to report
the fallback implementation we're using.
However with a slow console this can significantly affect the speed of
crypto operations. Using 'cryptsetup benchmark' the removal of the
printk() leads to a ~5x speedup for aes-cbc decryption.
So remove them.
Fixes: 8676590a1593 ("crypto: vmx - Adding AES routines for VMX module")
Fixes: 8c755ace357c ("crypto: vmx - Adding CBC routines for VMX module")
Fixes: 4f7f60d312b3 ("crypto: vmx - Adding CTR routines for VMX module")
Fixes: cc333cd68dfa ("crypto: vmx - Adding GHASH routines for VMX module")
Cc: stable@vger.kernel.org # v4.1+
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/crypto/vmx/aes.c | 2 --
drivers/crypto/vmx/aes_cbc.c | 3 ---
drivers/crypto/vmx/aes_ctr.c | 2 --
drivers/crypto/vmx/ghash.c | 2 --
4 files changed, 9 deletions(-)
--- a/drivers/crypto/vmx/aes.c
+++ b/drivers/crypto/vmx/aes.c
@@ -53,8 +53,6 @@ static int p8_aes_init(struct crypto_tfm
alg, PTR_ERR(fallback));
return PTR_ERR(fallback);
}
- printk(KERN_INFO "Using '%s' as fallback implementation.\n",
- crypto_tfm_alg_driver_name((struct crypto_tfm *) fallback));
crypto_cipher_set_flags(fallback,
crypto_cipher_get_flags((struct
--- a/drivers/crypto/vmx/aes_cbc.c
+++ b/drivers/crypto/vmx/aes_cbc.c
@@ -57,9 +57,6 @@ static int p8_aes_cbc_init(struct crypto
alg, PTR_ERR(fallback));
return PTR_ERR(fallback);
}
- printk(KERN_INFO "Using '%s' as fallback implementation.\n",
- crypto_skcipher_driver_name(fallback));
-
crypto_skcipher_set_flags(
fallback,
--- a/drivers/crypto/vmx/aes_ctr.c
+++ b/drivers/crypto/vmx/aes_ctr.c
@@ -55,8 +55,6 @@ static int p8_aes_ctr_init(struct crypto
alg, PTR_ERR(fallback));
return PTR_ERR(fallback);
}
- printk(KERN_INFO "Using '%s' as fallback implementation.\n",
- crypto_tfm_alg_driver_name((struct crypto_tfm *) fallback));
crypto_skcipher_set_flags(
fallback,
--- a/drivers/crypto/vmx/ghash.c
+++ b/drivers/crypto/vmx/ghash.c
@@ -64,8 +64,6 @@ static int p8_ghash_init_tfm(struct cryp
alg, PTR_ERR(fallback));
return PTR_ERR(fallback);
}
- printk(KERN_INFO "Using '%s' as fallback implementation.\n",
- crypto_tfm_alg_driver_name(crypto_shash_tfm(fallback)));
crypto_shash_set_flags(fallback,
crypto_shash_get_flags((struct crypto_shash