crypto: remove CONFIG_CRYPTO_STATS

Remove support for the "Crypto usage statistics" feature
(CONFIG_CRYPTO_STATS).  This feature does not appear to have ever been
used, and it is harmful because it significantly reduces performance and
is a large maintenance burden.

Covering each of these points in detail:

1. Feature is not being used

Since these generic crypto statistics are only readable using netlink,
it's fairly straightforward to look for programs that use them.  I'm
unable to find any evidence that any such programs exist.  For example,
Debian Code Search returns no hits except the kernel header and kernel
code itself and translations of the kernel header:
https://codesearch.debian.net/search?q=CRYPTOCFGA_STAT&literal=1&perpkg=1

The patch series that added this feature in 2018
(https://lore.kernel.org/linux-crypto/1537351855-16618-1-git-send-email-clabbe@baylibre.com/)
said "The goal is to have an ifconfig for crypto device."  This doesn't
appear to have happened.

It's not clear that there is real demand for crypto statistics.  Just
because the kernel provides other types of statistics such as I/O and
networking statistics and some people find those useful does not mean
that crypto statistics are useful too.

Further evidence that programs are not using CONFIG_CRYPTO_STATS is that
it was able to be disabled in RHEL and Fedora as a bug fix
(https://gitlab.com/redhat/centos-stream/src/kernel/centos-stream-9/-/merge_requests/2947).

Even further evidence comes from the fact that there are and have been
bugs in how the stats work, but they were never reported.  For example,
before Linux v6.7 hash stats were double-counted in most cases.

There has also never been any documentation for this feature, so it
might be hard to use even if someone wanted to.

2. CONFIG_CRYPTO_STATS significantly reduces performance

Enabling CONFIG_CRYPTO_STATS significantly reduces the performance of
the crypto API, even if no program ever retrieves the statistics.  This
primarily affects systems with large number of CPUs.  For example,
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2039576 reported
that Lustre client encryption performance improved from 21.7GB/s to
48.2GB/s by disabling CONFIG_CRYPTO_STATS.

It can be argued that this means that CONFIG_CRYPTO_STATS should be
optimized with per-cpu counters similar to many of the networking
counters.  But no one has done this in 5+ years.  This is consistent
with the fact that the feature appears to be unused, so there seems to
be little interest in improving it as opposed to just disabling it.

It can be argued that because CONFIG_CRYPTO_STATS is off by default,
performance doesn't matter.  But Linux distros tend to error on the side
of enabling options.  The option is enabled in Ubuntu and Arch Linux,
and until recently was enabled in RHEL and Fedora (see above).  So, even
just having the option available is harmful to users.

3. CONFIG_CRYPTO_STATS is a large maintenance burden

There are over 1000 lines of code associated with CONFIG_CRYPTO_STATS,
spread among 32 files.  It significantly complicates much of the
implementation of the crypto API.  After the initial submission, many
fixes and refactorings have consumed effort of multiple people to keep
this feature "working".  We should be spending this effort elsewhere.

Cc: Corentin Labbe <clabbe@baylibre.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Acked-by: Corentin Labbe <clabbe@baylibre.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

32 files changed, 77 insertions, 1139 deletions

diff --git a/arch/s390/configs/debug_defconfig b/arch/s390/configs/debug_defconfig
index cae2dd34fbb4..063f0c11087d 100644
--- a/arch/s390/configs/debug_defconfig
+++ b/arch/s390/configs/debug_defconfig
@@ -766,7 +766,6 @@ CONFIG_CRYPTO_USER_API_HASH=m
 CONFIG_CRYPTO_USER_API_SKCIPHER=m
 CONFIG_CRYPTO_USER_API_RNG=m
 CONFIG_CRYPTO_USER_API_AEAD=m
-CONFIG_CRYPTO_STATS=y
 CONFIG_CRYPTO_CRC32_S390=y
 CONFIG_CRYPTO_SHA512_S390=m
 CONFIG_CRYPTO_SHA1_S390=m
diff --git a/arch/s390/configs/defconfig b/arch/s390/configs/defconfig
index 42b988873e54..ab608ce768b7 100644
--- a/arch/s390/configs/defconfig
+++ b/arch/s390/configs/defconfig
@@ -752,7 +752,6 @@ CONFIG_CRYPTO_USER_API_HASH=m
 CONFIG_CRYPTO_USER_API_SKCIPHER=m
 CONFIG_CRYPTO_USER_API_RNG=m
 CONFIG_CRYPTO_USER_API_AEAD=m
-CONFIG_CRYPTO_STATS=y
 CONFIG_CRYPTO_CRC32_S390=y
 CONFIG_CRYPTO_SHA512_S390=m
 CONFIG_CRYPTO_SHA1_S390=m
diff --git a/crypto/Kconfig b/crypto/Kconfig
index 44661c2e30ca..f937142aa94d 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -1456,26 +1456,6 @@ config CRYPTO_USER_API_ENABLE_OBSOLETE
 	  already been phased out from internal use by the kernel, and are
 	  only useful for userspace clients that still rely on them.
 
-config CRYPTO_STATS
-	bool "Crypto usage statistics"
-	depends on CRYPTO_USER
-	help
-	  Enable the gathering of crypto stats.
-
-	  Enabling this option reduces the performance of the crypto API.  It
-	  should only be enabled when there is actually a use case for it.
-
-	  This collects data sizes, numbers of requests, and numbers
-	  of errors processed by:
-	  - AEAD ciphers (encrypt, decrypt)
-	  - asymmetric key ciphers (encrypt, decrypt, verify, sign)
-	  - symmetric key ciphers (encrypt, decrypt)
-	  - compression algorithms (compress, decompress)
-	  - hash algorithms (hash)
-	  - key-agreement protocol primitives (setsecret, generate
-	    public key, compute shared secret)
-	  - RNG (generate, seed)
-
 endmenu
 
 config CRYPTO_HASH_INFO
diff --git a/crypto/Makefile b/crypto/Makefile
index 408f0a1f9ab9..de9a3312a2c8 100644
--- a/crypto/Makefile
+++ b/crypto/Makefile
@@ -69,8 +69,6 @@ cryptomgr-y := algboss.o testmgr.o
 
 obj-$(CONFIG_CRYPTO_MANAGER2) += cryptomgr.o
 obj-$(CONFIG_CRYPTO_USER) += crypto_user.o
-crypto_user-y := crypto_user_base.o
-crypto_user-$(CONFIG_CRYPTO_STATS) += crypto_user_stat.o
 obj-$(CONFIG_CRYPTO_CMAC) += cmac.o
 obj-$(CONFIG_CRYPTO_HMAC) += hmac.o
 obj-$(CONFIG_CRYPTO_VMAC) += vmac.o
diff --git a/crypto/acompress.c b/crypto/acompress.c
index 1c682810a484..484a865b23cd 100644
--- a/crypto/acompress.c
+++ b/crypto/acompress.c
@@ -25,7 +25,7 @@ static const struct crypto_type crypto_acomp_type;
 
 static inline struct acomp_alg *__crypto_acomp_alg(struct crypto_alg *alg)
 {
-	return container_of(alg, struct acomp_alg, calg.base);
+	return container_of(alg, struct acomp_alg, base);
 }
 
 static inline struct acomp_alg *crypto_acomp_alg(struct crypto_acomp *tfm)
@@ -93,32 +93,6 @@ static unsigned int crypto_acomp_extsize(struct crypto_alg *alg)
 	return extsize;
 }
 
-static inline int __crypto_acomp_report_stat(struct sk_buff *skb,
-					     struct crypto_alg *alg)
-{
-	struct comp_alg_common *calg = __crypto_comp_alg_common(alg);
-	struct crypto_istat_compress *istat = comp_get_stat(calg);
-	struct crypto_stat_compress racomp;
-
-	memset(&racomp, 0, sizeof(racomp));
-
-	strscpy(racomp.type, "acomp", sizeof(racomp.type));
-	racomp.stat_compress_cnt = atomic64_read(&istat->compress_cnt);
-	racomp.stat_compress_tlen = atomic64_read(&istat->compress_tlen);
-	racomp.stat_decompress_cnt =  atomic64_read(&istat->decompress_cnt);
-	racomp.stat_decompress_tlen = atomic64_read(&istat->decompress_tlen);
-	racomp.stat_err_cnt = atomic64_read(&istat->err_cnt);
-
-	return nla_put(skb, CRYPTOCFGA_STAT_ACOMP, sizeof(racomp), &racomp);
-}
-
-#ifdef CONFIG_CRYPTO_STATS
-int crypto_acomp_report_stat(struct sk_buff *skb, struct crypto_alg *alg)
-{
-	return __crypto_acomp_report_stat(skb, alg);
-}
-#endif
-
 static const struct crypto_type crypto_acomp_type = {
 	.extsize = crypto_acomp_extsize,
 	.init_tfm = crypto_acomp_init_tfm,
@@ -128,9 +102,6 @@ static const struct crypto_type crypto_acomp_type = {
 #if IS_ENABLED(CONFIG_CRYPTO_USER)
 	.report = crypto_acomp_report,
 #endif
-#ifdef CONFIG_CRYPTO_STATS
-	.report_stat = crypto_acomp_report_stat,
-#endif
 	.maskclear = ~CRYPTO_ALG_TYPE_MASK,
 	.maskset = CRYPTO_ALG_TYPE_ACOMPRESS_MASK,
 	.type = CRYPTO_ALG_TYPE_ACOMPRESS,
@@ -182,24 +153,12 @@ void acomp_request_free(struct acomp_req *req)
 }
 EXPORT_SYMBOL_GPL(acomp_request_free);
 
-void comp_prepare_alg(struct comp_alg_common *alg)
-{
-	struct crypto_istat_compress *istat = comp_get_stat(alg);
-	struct crypto_alg *base = &alg->base;
-
-	base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
-
-	if (IS_ENABLED(CONFIG_CRYPTO_STATS))
-		memset(istat, 0, sizeof(*istat));
-}
-
 int crypto_register_acomp(struct acomp_alg *alg)
 {
-	struct crypto_alg *base = &alg->calg.base;
-
-	comp_prepare_alg(&alg->calg);
+	struct crypto_alg *base = &alg->base;
 
 	base->cra_type = &crypto_acomp_type;
+	base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
 	base->cra_flags |= CRYPTO_ALG_TYPE_ACOMPRESS;
 
 	return crypto_register_alg(base);
diff --git a/crypto/aead.c b/crypto/aead.c
index 54906633566a..0e75a69189df 100644
--- a/crypto/aead.c
+++ b/crypto/aead.c
@@ -20,15 +20,6 @@
 
 #include "internal.h"
 
-static inline struct crypto_istat_aead *aead_get_stat(struct aead_alg *alg)
-{
-#ifdef CONFIG_CRYPTO_STATS
-	return &alg->stat;
-#else
-	return NULL;
-#endif
-}
-
 static int setkey_unaligned(struct crypto_aead *tfm, const u8 *key,
 			    unsigned int keylen)
 {
@@ -90,62 +81,28 @@ int crypto_aead_setauthsize(struct crypto_aead *tfm, unsigned int authsize)
 }
 EXPORT_SYMBOL_GPL(crypto_aead_setauthsize);
 
-static inline int crypto_aead_errstat(struct crypto_istat_aead *istat, int err)
-{
-	if (!IS_ENABLED(CONFIG_CRYPTO_STATS))
-		return err;
-
-	if (err && err != -EINPROGRESS && err != -EBUSY)
-		atomic64_inc(&istat->err_cnt);
-
-	return err;
-}
-
 int crypto_aead_encrypt(struct aead_request *req)
 {
 	struct crypto_aead *aead = crypto_aead_reqtfm(req);
-	struct aead_alg *alg = crypto_aead_alg(aead);
-	struct crypto_istat_aead *istat;
-	int ret;
-
-	istat = aead_get_stat(alg);
-
-	if (IS_ENABLED(CONFIG_CRYPTO_STATS)) {
-		atomic64_inc(&istat->encrypt_cnt);
-		atomic64_add(req->cryptlen, &istat->encrypt_tlen);
-	}
 
 	if (crypto_aead_get_flags(aead) & CRYPTO_TFM_NEED_KEY)
-		ret = -ENOKEY;
-	else
-		ret = alg->encrypt(req);
+		return -ENOKEY;
 
-	return crypto_aead_errstat(istat, ret);
+	return crypto_aead_alg(aead)->encrypt(req);
 }
 EXPORT_SYMBOL_GPL(crypto_aead_encrypt);
 
 int crypto_aead_decrypt(struct aead_request *req)
 {
 	struct crypto_aead *aead = crypto_aead_reqtfm(req);
-	struct aead_alg *alg = crypto_aead_alg(aead);
-	struct crypto_istat_aead *istat;
-	int ret;
-
-	istat = aead_get_stat(alg);
-
-	if (IS_ENABLED(CONFIG_CRYPTO_STATS)) {
-		atomic64_inc(&istat->encrypt_cnt);
-		atomic64_add(req->cryptlen, &istat->encrypt_tlen);
-	}
 
 	if (crypto_aead_get_flags(aead) & CRYPTO_TFM_NEED_KEY)
-		ret = -ENOKEY;
-	else if (req->cryptlen < crypto_aead_authsize(aead))
-		ret = -EINVAL;
-	else
-		ret = alg->decrypt(req);
+		return -ENOKEY;
+
+	if (req->cryptlen < crypto_aead_authsize(aead))
+		return -EINVAL;
 
-	return crypto_aead_errstat(istat, ret);
+	return crypto_aead_alg(aead)->decrypt(req);
 }
 EXPORT_SYMBOL_GPL(crypto_aead_decrypt);
 
@@ -215,26 +172,6 @@ static void crypto_aead_free_instance(struct crypto_instance *inst)
 	aead->free(aead);
 }
 
-static int __maybe_unused crypto_aead_report_stat(
-	struct sk_buff *skb, struct crypto_alg *alg)
-{
-	struct aead_alg *aead = container_of(alg, struct aead_alg, base);
-	struct crypto_istat_aead *istat = aead_get_stat(aead);
-	struct crypto_stat_aead raead;
-
-	memset(&raead, 0, sizeof(raead));
-
-	strscpy(raead.type, "aead", sizeof(raead.type));
-
-	raead.stat_encrypt_cnt = atomic64_read(&istat->encrypt_cnt);
-	raead.stat_encrypt_tlen = atomic64_read(&istat->encrypt_tlen);
-	raead.stat_decrypt_cnt = atomic64_read(&istat->decrypt_cnt);
-	raead.stat_decrypt_tlen = atomic64_read(&istat->decrypt_tlen);
-	raead.stat_err_cnt = atomic64_read(&istat->err_cnt);
-
-	return nla_put(skb, CRYPTOCFGA_STAT_AEAD, sizeof(raead), &raead);
-}
-
 static const struct crypto_type crypto_aead_type = {
 	.extsize = crypto_alg_extsize,
 	.init_tfm = crypto_aead_init_tfm,
@@ -245,9 +182,6 @@ static const struct crypto_type crypto_aead_type = {
 #if IS_ENABLED(CONFIG_CRYPTO_USER)
 	.report = crypto_aead_report,
 #endif
-#ifdef CONFIG_CRYPTO_STATS
-	.report_stat = crypto_aead_report_stat,
-#endif
 	.maskclear = ~CRYPTO_ALG_TYPE_MASK,
 	.maskset = CRYPTO_ALG_TYPE_MASK,
 	.type = CRYPTO_ALG_TYPE_AEAD,
@@ -277,7 +211,6 @@ EXPORT_SYMBOL_GPL(crypto_has_aead);
 
 static int aead_prepare_alg(struct aead_alg *alg)
 {
-	struct crypto_istat_aead *istat = aead_get_stat(alg);
 	struct crypto_alg *base = &alg->base;
 
 	if (max3(alg->maxauthsize, alg->ivsize, alg->chunksize) >
@@ -291,9 +224,6 @@ static int aead_prepare_alg(struct aead_alg *alg)
 	base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
 	base->cra_flags |= CRYPTO_ALG_TYPE_AEAD;
 
-	if (IS_ENABLED(CONFIG_CRYPTO_STATS))
-		memset(istat, 0, sizeof(*istat));
-
 	return 0;
 }
 
diff --git a/crypto/ahash.c b/crypto/ahash.c
index 0ac83f7f701d..bcd9de009a91 100644
--- a/crypto/ahash.c
+++ b/crypto/ahash.c
@@ -27,22 +27,6 @@
 
 #define CRYPTO_ALG_TYPE_AHASH_MASK	0x0000000e
 
-static inline struct crypto_istat_hash *ahash_get_stat(struct ahash_alg *alg)
-{
-	return hash_get_stat(&alg->halg);
-}
-
-static inline int crypto_ahash_errstat(struct ahash_alg *alg, int err)
-{
-	if (!IS_ENABLED(CONFIG_CRYPTO_STATS))
-		return err;
-
-	if (err && err != -EINPROGRESS && err != -EBUSY)
-		atomic64_inc(&ahash_get_stat(alg)->err_cnt);
-
-	return err;
-}
-
 /*
  * For an ahash tfm that is using an shash algorithm (instead of an ahash
  * algorithm), this returns the underlying shash tfm.
@@ -344,75 +328,47 @@ static void ahash_restore_req(struct ahash_request *req, int err)
 int crypto_ahash_update(struct ahash_request *req)
 {
 	struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
-	struct ahash_alg *alg;
 
 	if (likely(tfm->using_shash))
 		return shash_ahash_update(req, ahash_request_ctx(req));
 
-	alg = crypto_ahash_alg(tfm);
-	if (IS_ENABLED(CONFIG_CRYPTO_STATS))
-		atomic64_add(req->nbytes, &ahash_get_stat(alg)->hash_tlen);
-	return crypto_ahash_errstat(alg, alg->update(req));
+	return crypto_ahash_alg(tfm)->update(req);
 }
 EXPORT_SYMBOL_GPL(crypto_ahash_update);
 
 int crypto_ahash_final(struct ahash_request *req)
 {
 	struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
-	struct ahash_alg *alg;
 
 	if (likely(tfm->using_shash))
 		return crypto_shash_final(ahash_request_ctx(req), req->result);
 
-	alg = crypto_ahash_alg(tfm);
-	if (IS_ENABLED(CONFIG_CRYPTO_STATS))
-		atomic64_inc(&ahash_get_stat(alg)->hash_cnt);
-	return crypto_ahash_errstat(alg, alg->final(req));
+	return crypto_ahash_alg(tfm)->final(req);
 }
 EXPORT_SYMBOL_GPL(crypto_ahash_final);
 
 int crypto_ahash_finup(struct ahash_request *req)
 {
 	struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
-	struct ahash_alg *alg;
 
 	if (likely(tfm->using_shash))
 		return shash_ahash_finup(req, ahash_request_ctx(req));
 
-	alg = crypto_ahash_alg(tfm);
-	if (IS_ENABLED(CONFIG_CRYPTO_STATS)) {
-		struct crypto_istat_hash *istat = ahash_get_stat(alg);
-
-		atomic64_inc(&istat->hash_cnt);
-		atomic64_add(req->nbytes, &istat->hash_tlen);
-	}
-	return crypto_ahash_errstat(alg, alg->finup(req));
+	return crypto_ahash_alg(tfm)->finup(req);
 }
 EXPORT_SYMBOL_GPL(crypto_ahash_finup);
 
 int crypto_ahash_digest(struct ahash_request *req)
 {
 	struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
-	struct ahash_alg *alg;
-	int err;
 
 	if (likely(tfm->using_shash))
 		return shash_ahash_digest(req, prepare_shash_desc(req, tfm));
 
-	alg = crypto_ahash_alg(tfm);
-	if (IS_ENABLED(CONFIG_CRYPTO_STATS)) {
-		struct crypto_istat_hash *istat = ahash_get_stat(alg);
-
-		atomic64_inc(&istat->hash_cnt);
-		atomic64_add(req->nbytes, &istat->hash_tlen);
-	}
-
 	if (crypto_ahash_get_flags(tfm) & CRYPTO_TFM_NEED_KEY)
-		err = -ENOKEY;
-	else
-		err = alg->digest(req);
+		return -ENOKEY;
 
-	return crypto_ahash_errstat(alg, err);
+	return crypto_ahash_alg(tfm)->digest(req);
 }
 EXPORT_SYMBOL_GPL(crypto_ahash_digest);
 
@@ -571,12 +527,6 @@ static void crypto_ahash_show(struct seq_file *m, struct crypto_alg *alg)
 		   __crypto_hash_alg_common(alg)->digestsize);
 }
 
-static int __maybe_unused crypto_ahash_report_stat(
-	struct sk_buff *skb, struct crypto_alg *alg)
-{
-	return crypto_hash_report_stat(skb, alg, "ahash");
-}
-
 static const struct crypto_type crypto_ahash_type = {
 	.extsize = crypto_ahash_extsize,
 	.init_tfm = crypto_ahash_init_tfm,
@@ -587,9 +537,6 @@ static const struct crypto_type crypto_ahash_type = {
 #if IS_ENABLED(CONFIG_CRYPTO_USER)
 	.report = crypto_ahash_report,
 #endif
-#ifdef CONFIG_CRYPTO_STATS
-	.report_stat = crypto_ahash_report_stat,
-#endif
 	.maskclear = ~CRYPTO_ALG_TYPE_MASK,
 	.maskset = CRYPTO_ALG_TYPE_AHASH_MASK,
 	.type = CRYPTO_ALG_TYPE_AHASH,
diff --git a/crypto/akcipher.c b/crypto/akcipher.c
index 52813f0b19e4..e0ff5f4dda6d 100644
--- a/crypto/akcipher.c
+++ b/crypto/akcipher.c
@@ -70,30 +70,6 @@ static void crypto_akcipher_free_instance(struct crypto_instance *inst)
 	akcipher->free(akcipher);
 }
 
-static int __maybe_unused crypto_akcipher_report_stat(
-	struct sk_buff *skb, struct crypto_alg *alg)
-{
-	struct akcipher_alg *akcipher = __crypto_akcipher_alg(alg);
-	struct crypto_istat_akcipher *istat;
-	struct crypto_stat_akcipher rakcipher;
-
-	istat = akcipher_get_stat(akcipher);
-
-	memset(&rakcipher, 0, sizeof(rakcipher));
-
-	strscpy(rakcipher.type, "akcipher", sizeof(rakcipher.type));
-	rakcipher.stat_encrypt_cnt = atomic64_read(&istat->encrypt_cnt);
-	rakcipher.stat_encrypt_tlen = atomic64_read(&istat->encrypt_tlen);
-	rakcipher.stat_decrypt_cnt = atomic64_read(&istat->decrypt_cnt);
-	rakcipher.stat_decrypt_tlen = atomic64_read(&istat->decrypt_tlen);
-	rakcipher.stat_sign_cnt = atomic64_read(&istat->sign_cnt);
-	rakcipher.stat_verify_cnt = atomic64_read(&istat->verify_cnt);
-	rakcipher.stat_err_cnt = atomic64_read(&istat->err_cnt);
-
-	return nla_put(skb, CRYPTOCFGA_STAT_AKCIPHER,
-		       sizeof(rakcipher), &rakcipher);
-}
-
 static const struct crypto_type crypto_akcipher_type = {
 	.extsize = crypto_alg_extsize,
 	.init_tfm = crypto_akcipher_init_tfm,
@@ -104,9 +80,6 @@ static const struct crypto_type crypto_akcipher_type = {
 #if IS_ENABLED(CONFIG_CRYPTO_USER)
 	.report = crypto_akcipher_report,
 #endif
-#ifdef CONFIG_CRYPTO_STATS
-	.report_stat = crypto_akcipher_report_stat,
-#endif
 	.maskclear = ~CRYPTO_ALG_TYPE_MASK,
 	.maskset = CRYPTO_ALG_TYPE_AHASH_MASK,
 	.type = CRYPTO_ALG_TYPE_AKCIPHER,
@@ -131,15 +104,11 @@ EXPORT_SYMBOL_GPL(crypto_alloc_akcipher);
 
 static void akcipher_prepare_alg(struct akcipher_alg *alg)
 {
-	struct crypto_istat_akcipher *istat = akcipher_get_stat(alg);
 	struct crypto_alg *base = &alg->base;
 
 	base->cra_type = &crypto_akcipher_type;
 	base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
 	base->cra_flags |= CRYPTO_ALG_TYPE_AKCIPHER;
-
-	if (IS_ENABLED(CONFIG_CRYPTO_STATS))
-		memset(istat, 0, sizeof(*istat));
 }
 
 static int akcipher_default_op(struct akcipher_request *req)
diff --git a/crypto/compress.h b/crypto/compress.h
index 19f65516d699..23ea43810810 100644
--- a/crypto/compress.h
+++ b/crypto/compress.h
@@ -12,15 +12,10 @@
 #include "internal.h"
 
 struct acomp_req;
-struct comp_alg_common;
 struct sk_buff;
 
 int crypto_init_scomp_ops_async(struct crypto_tfm *tfm);
 struct acomp_req *crypto_acomp_scomp_alloc_ctx(struct acomp_req *req);
 void crypto_acomp_scomp_free_ctx(struct acomp_req *req);
 
-int crypto_acomp_report_stat(struct sk_buff *skb, struct crypto_alg *alg);
-
-void comp_prepare_alg(struct comp_alg_common *alg);
-
 #endif	/* _LOCAL_CRYPTO_COMPRESS_H */
diff --git a/crypto/crypto_user_base.c b/crypto/crypto_user.c
index 3fa20f12989f..6c571834e86a 100644
--- a/crypto/crypto_user_base.c
+++ b/crypto/crypto_user.c
@@ -18,7 +18,6 @@
 #include <crypto/internal/rng.h>
 #include <crypto/akcipher.h>
 #include <crypto/kpp.h>
-#include <crypto/internal/cryptouser.h>
 
 #include "internal.h"
 
@@ -33,7 +32,7 @@ struct crypto_dump_info {
 	u16 nlmsg_flags;
 };
 
-struct crypto_alg *crypto_alg_match(struct crypto_user_alg *p, int exact)
+static struct crypto_alg *crypto_alg_match(struct crypto_user_alg *p, int exact)
 {
 	struct crypto_alg *q, *alg = NULL;
 
@@ -387,6 +386,13 @@ static int crypto_del_rng(struct sk_buff *skb, struct nlmsghdr *nlh,
 	return crypto_del_default_rng();
 }
 
+static int crypto_reportstat(struct sk_buff *in_skb, struct nlmsghdr *in_nlh,
+			     struct nlattr **attrs)
+{
+	/* No longer supported */
+	return -ENOTSUPP;
+}
+
 #define MSGSIZE(type) sizeof(struct type)
 
 static const int crypto_msg_min[CRYPTO_NR_MSGTYPES] = {
diff --git a/crypto/crypto_user_stat.c b/crypto/crypto_user_stat.c
deleted file mode 100644
index d4f3d39b5137..000000000000
--- a/crypto/crypto_user_stat.c
+++ /dev/null
@@ -1,176 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Crypto user configuration API.
- *
- * Copyright (C) 2017-2018 Corentin Labbe <clabbe@baylibre.com>
- *
- */
-
-#include <crypto/algapi.h>
-#include <crypto/internal/cryptouser.h>
-#include <linux/errno.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/string.h>
-#include <net/netlink.h>
-#include <net/sock.h>
-
-#define null_terminated(x)	(strnlen(x, sizeof(x)) < sizeof(x))
-
-struct crypto_dump_info {
-	struct sk_buff *in_skb;
-	struct sk_buff *out_skb;
-	u32 nlmsg_seq;
-	u16 nlmsg_flags;
-};
-
-static int crypto_report_cipher(struct sk_buff *skb, struct crypto_alg *alg)
-{
-	struct crypto_stat_cipher rcipher;
-
-	memset(&rcipher, 0, sizeof(rcipher));
-
-	strscpy(rcipher.type, "cipher", sizeof(rcipher.type));
-
-	return nla_put(skb, CRYPTOCFGA_STAT_CIPHER, sizeof(rcipher), &rcipher);
-}
-
-static int crypto_report_comp(struct sk_buff *skb, struct crypto_alg *alg)
-{
-	struct crypto_stat_compress rcomp;
-
-	memset(&rcomp, 0, sizeof(rcomp));
-
-	strscpy(rcomp.type, "compression", sizeof(rcomp.type));
-
-	return nla_put(skb, CRYPTOCFGA_STAT_COMPRESS, sizeof(rcomp), &rcomp);
-}
-
-static int crypto_reportstat_one(struct crypto_alg *alg,
-				 struct crypto_user_alg *ualg,
-				 struct sk_buff *skb)
-{
-	memset(ualg, 0, sizeof(*ualg));
-
-	strscpy(ualg->cru_name, alg->cra_name, sizeof(ualg->cru_name));
-	strscpy(ualg->cru_driver_name, alg->cra_driver_name,
-		sizeof(ualg->cru_driver_name));
-	strscpy(ualg->cru_module_name, module_name(alg->cra_module),
-		sizeof(ualg->cru_module_name));
-
-	ualg->cru_type = 0;
-	ualg->cru_mask = 0;
-	ualg->cru_flags = alg->cra_flags;
-	ualg->cru_refcnt = refcount_read(&alg->cra_refcnt);
-
-	if (nla_put_u32(skb, CRYPTOCFGA_PRIORITY_VAL, alg->cra_priority))
-		goto nla_put_failure;
-	if (alg->cra_flags & CRYPTO_ALG_LARVAL) {
-		struct crypto_stat_larval rl;
-
-		memset(&rl, 0, sizeof(rl));
-		strscpy(rl.type, "larval", sizeof(rl.type));
-		if (nla_put(skb, CRYPTOCFGA_STAT_LARVAL, sizeof(rl), &rl))
-			goto nla_put_failure;
-		goto out;
-	}
-
-	if (alg->cra_type && alg->cra_type->report_stat) {
-		if (alg->cra_type->report_stat(skb, alg))
-			goto nla_put_failure;
-		goto out;
-	}
-
-	switch (alg->cra_flags & (CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_LARVAL)) {
-	case CRYPTO_ALG_TYPE_CIPHER:
-		if (crypto_report_cipher(skb, alg))
-			goto nla_put_failure;
-		break;
-	case CRYPTO_ALG_TYPE_COMPRESS:
-		if (crypto_report_comp(skb, alg))
-			goto nla_put_failure;
-		break;
-	default:
-		pr_err("ERROR: Unhandled alg %d in %s\n",
-		       alg->cra_flags & (CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_LARVAL),
-		       __func__);
-	}
-
-out:
-	return 0;
-
-nla_put_failure:
-	return -EMSGSIZE;
-}
-
-static int crypto_reportstat_alg(struct crypto_alg *alg,
-				 struct crypto_dump_info *info)
-{
-	struct sk_buff *in_skb = info->in_skb;
-	struct sk_buff *skb = info->out_skb;
-	struct nlmsghdr *nlh;
-	struct crypto_user_alg *ualg;
-	int err = 0;
-
-	nlh = nlmsg_put(skb, NETLINK_CB(in_skb).portid, info->nlmsg_seq,
-			CRYPTO_MSG_GETSTAT, sizeof(*ualg), info->nlmsg_flags);
-	if (!nlh) {
-		err = -EMSGSIZE;
-		goto out;
-	}
-
-	ualg = nlmsg_data(nlh);
-
-	err = crypto_reportstat_one(alg, ualg, skb);
-	if (err) {
-		nlmsg_cancel(skb, nlh);
-		goto out;
-	}
-
-	nlmsg_end(skb, nlh);
-
-out:
-	return err;
-}
-
-int crypto_reportstat(struct sk_buff *in_skb, struct nlmsghdr *in_nlh,
-		      struct nlattr **attrs)
-{
-	struct net *net = sock_net(in_skb->sk);
-	struct crypto_user_alg *p = nlmsg_data(in_nlh);
-	struct crypto_alg *alg;
-	struct sk_buff *skb;
-	struct crypto_dump_info info;
-	int err;
-
-	if (!null_terminated(p->cru_name) || !null_terminated(p->cru_driver_name))
-		return -EINVAL;
-
-	alg = crypto_alg_match(p, 0);
-	if (!alg)
-		return -ENOENT;
-
-	err = -ENOMEM;
-	skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
-	if (!skb)
-		goto drop_alg;
-
-	info.in_skb = in_skb;
-	info.out_skb = skb;
-	info.nlmsg_seq = in_nlh->nlmsg_seq;
-	info.nlmsg_flags = 0;
-
-	err = crypto_reportstat_alg(alg, &info);
-
-drop_alg:
-	crypto_mod_put(alg);
-
-	if (err) {
-		kfree_skb(skb);
-		return err;
-	}
-
-	return nlmsg_unicast(net->crypto_nlsk, skb, NETLINK_CB(in_skb).portid);
-}
-
-MODULE_LICENSE("GPL");
diff --git a/crypto/hash.h b/crypto/hash.h
index 93f6ba0df263..cf9aee07f77d 100644
--- a/crypto/hash.h
+++ b/crypto/hash.h
@@ -8,39 +8,9 @@
 #define _LOCAL_CRYPTO_HASH_H
 
 #include <crypto/internal/hash.h>
-#include <linux/cryptouser.h>
 
 #include "internal.h"
 
-static inline struct crypto_istat_hash *hash_get_stat(
-	struct hash_alg_common *alg)
-{
-#ifdef CONFIG_CRYPTO_STATS
-	return &alg->stat;
-#else
-	return NULL;
-#endif
-}
-
-static inline int crypto_hash_report_stat(struct sk_buff *skb,
-					  struct crypto_alg *alg,
-					  const char *type)
-{
-	struct hash_alg_common *halg = __crypto_hash_alg_common(alg);
-	struct crypto_istat_hash *istat = hash_get_stat(halg);
-	struct crypto_stat_hash rhash;
-
-	memset(&rhash, 0, sizeof(rhash));
-
-	strscpy(rhash.type, type, sizeof(rhash.type));
-
-	rhash.stat_hash_cnt = atomic64_read(&istat->hash_cnt);
-	rhash.stat_hash_tlen = atomic64_read(&istat->hash_tlen);
-	rhash.stat_err_cnt = atomic64_read(&istat->err_cnt);
-
-	return nla_put(skb, CRYPTOCFGA_STAT_HASH, sizeof(rhash), &rhash);
-}
-
 extern const struct crypto_type crypto_shash_type;
 
 int hash_prepare_alg(struct hash_alg_common *alg);
diff --git a/crypto/kpp.c b/crypto/kpp.c
index 33d44e59387f..ecc63a1a948d 100644
--- a/crypto/kpp.c
+++ b/crypto/kpp.c
@@ -66,29 +66,6 @@ static void crypto_kpp_free_instance(struct crypto_instance *inst)
 	kpp->free(kpp);
 }
 
-static int __maybe_unused crypto_kpp_report_stat(
-	struct sk_buff *skb, struct crypto_alg *alg)
-{
-	struct kpp_alg *kpp = __crypto_kpp_alg(alg);
-	struct crypto_istat_kpp *istat;
-	struct crypto_stat_kpp rkpp;
-
-	istat = kpp_get_stat(kpp);
-
-	memset(&rkpp, 0, sizeof(rkpp));
-
-	strscpy(rkpp.type, "kpp", sizeof(rkpp.type));
-
-	rkpp.stat_setsecret_cnt = atomic64_read(&istat->setsecret_cnt);
-	rkpp.stat_generate_public_key_cnt =
-		atomic64_read(&istat->generate_public_key_cnt);
-	rkpp.stat_compute_shared_secret_cnt =
-		atomic64_read(&istat->compute_shared_secret_cnt);
-	rkpp.stat_err_cnt = atomic64_read(&istat->err_cnt);
-
-	return nla_put(skb, CRYPTOCFGA_STAT_KPP, sizeof(rkpp), &rkpp);
-}
-
 static const struct crypto_type crypto_kpp_type = {
 	.extsize = crypto_alg_extsize,
 	.init_tfm = crypto_kpp_init_tfm,
@@ -99,9 +76,6 @@ static const struct crypto_type crypto_kpp_type = {
 #if IS_ENABLED(CONFIG_CRYPTO_USER)
 	.report = crypto_kpp_report,
 #endif
-#ifdef CONFIG_CRYPTO_STATS
-	.report_stat = crypto_kpp_report_stat,
-#endif
 	.maskclear = ~CRYPTO_ALG_TYPE_MASK,
 	.maskset = CRYPTO_ALG_TYPE_MASK,
 	.type = CRYPTO_ALG_TYPE_KPP,
@@ -131,15 +105,11 @@ EXPORT_SYMBOL_GPL(crypto_has_kpp);
 
 static void kpp_prepare_alg(struct kpp_alg *alg)
 {
-	struct crypto_istat_kpp *istat = kpp_get_stat(alg);
 	struct crypto_alg *base = &alg->base;
 
 	base->cra_type = &crypto_kpp_type;
 	base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
 	base->cra_flags |= CRYPTO_ALG_TYPE_KPP;
-
-	if (IS_ENABLED(CONFIG_CRYPTO_STATS))
-		memset(istat, 0, sizeof(*istat));
 }
 
 int crypto_register_kpp(struct kpp_alg *alg)
diff --git a/crypto/lskcipher.c b/crypto/lskcipher.c
index 0b6dd8aa21f2..0a800292ca4e 100644
--- a/crypto/lskcipher.c
+++ b/crypto/lskcipher.c
@@ -29,25 +29,6 @@ static inline struct lskcipher_alg *__crypto_lskcipher_alg(
 	return container_of(alg, struct lskcipher_alg, co.base);
 }
 
-static inline struct crypto_istat_cipher *lskcipher_get_stat(
-	struct lskcipher_alg *alg)
-{
-	return skcipher_get_stat_common(&alg->co);
-}
-
-static inline int crypto_lskcipher_errstat(struct lskcipher_alg *alg, int err)
-{
-	struct crypto_istat_cipher *istat = lskcipher_get_stat(alg);
-
-	if (!IS_ENABLED(CONFIG_CRYPTO_STATS))
-		return err;
-
-	if (err)
-		atomic64_inc(&istat->err_cnt);
-
-	return err;
-}
-
 static int lskcipher_setkey_unaligned(struct crypto_lskcipher *tfm,
 				      const u8 *key, unsigned int keylen)
 {
@@ -147,20 +128,13 @@ static int crypto_lskcipher_crypt(struct crypto_lskcipher *tfm, const u8 *src,
 					       u32 flags))
 {
 	unsigned long alignmask = crypto_lskcipher_alignmask(tfm);
-	struct lskcipher_alg *alg = crypto_lskcipher_alg(tfm);
-	int ret;
 
 	if (((unsigned long)src | (unsigned long)dst | (unsigned long)iv) &
-	    alignmask) {
-		ret = crypto_lskcipher_crypt_unaligned(tfm, src, dst, len, iv,
-						       crypt);
-		goto out;
-	}
+	    alignmask)
+		return crypto_lskcipher_crypt_unaligned(tfm, src, dst, len, iv,
+							crypt);
 
-	ret = crypt(tfm, src, dst, len, iv, CRYPTO_LSKCIPHER_FLAG_FINAL);
-
-out:
-	return crypto_lskcipher_errstat(alg, ret);
+	return crypt(tfm, src, dst, len, iv, CRYPTO_LSKCIPHER_FLAG_FINAL);
 }
 
 int crypto_lskcipher_encrypt(struct crypto_lskcipher *tfm, const u8 *src,
@@ -168,13 +142,6 @@ int crypto_lskcipher_encrypt(struct crypto_lskcipher *tfm, const u8 *src,
 {
 	struct lskcipher_alg *alg = crypto_lskcipher_alg(tfm);
 
-	if (IS_ENABLED(CONFIG_CRYPTO_STATS)) {
-		struct crypto_istat_cipher *istat = lskcipher_get_stat(alg);
-
-		atomic64_inc(&istat->encrypt_cnt);
-		atomic64_add(len, &istat->encrypt_tlen);
-	}
-
 	return crypto_lskcipher_crypt(tfm, src, dst, len, iv, alg->encrypt);
 }
 EXPORT_SYMBOL_GPL(crypto_lskcipher_encrypt);
@@ -184,13 +151,6 @@ int crypto_lskcipher_decrypt(struct crypto_lskcipher *tfm, const u8 *src,
 {
 	struct lskcipher_alg *alg = crypto_lskcipher_alg(tfm);
 
-	if (IS_ENABLED(CONFIG_CRYPTO_STATS)) {
-		struct crypto_istat_cipher *istat = lskcipher_get_stat(alg);
-
-		atomic64_inc(&istat->decrypt_cnt);
-		atomic64_add(len, &istat->decrypt_tlen);
-	}
-
 	return crypto_lskcipher_crypt(tfm, src, dst, len, iv, alg->decrypt);
 }
 EXPORT_SYMBOL_GPL(crypto_lskcipher_decrypt);
@@ -322,28 +282,6 @@ static int __maybe_unused crypto_lskcipher_report(
 		       sizeof(rblkcipher), &rblkcipher);
 }
 
-static int __maybe_unused crypto_lskcipher_report_stat(
-	struct sk_buff *skb, struct crypto_alg *alg)
-{
-	struct lskcipher_alg *skcipher = __crypto_lskcipher_alg(alg);
-	struct crypto_istat_cipher *istat;
-	struct crypto_stat_cipher rcipher;
-
-	istat = lskcipher_get_stat(skcipher);
-
-	memset(&rcipher, 0, sizeof(rcipher));
-
-	strscpy(rcipher.type, "cipher", sizeof(rcipher.type));
-
-	rcipher.stat_encrypt_cnt = atomic64_read(&istat->encrypt_cnt);
-	rcipher.stat_encrypt_tlen = atomic64_read(&istat->encrypt_tlen);
-	rcipher.stat_decrypt_cnt =  atomic64_read(&istat->decrypt_cnt);
-	rcipher.stat_decrypt_tlen = atomic64_read(&istat->decrypt_tlen);
-	rcipher.stat_err_cnt =  atomic64_read(&istat->err_cnt);
-
-	return nla_put(skb, CRYPTOCFGA_STAT_CIPHER, sizeof(rcipher), &rcipher);
-}
-
 static const struct crypto_type crypto_lskcipher_type = {
 	.extsize = crypto_alg_extsize,
 	.init_tfm = crypto_lskcipher_init_tfm,
@@ -354,9 +292,6 @@ static const struct crypto_type crypto_lskcipher_type = {
 #if IS_ENABLED(CONFIG_CRYPTO_USER)
 	.report = crypto_lskcipher_report,
 #endif
-#ifdef CONFIG_CRYPTO_STATS
-	.report_stat = crypto_lskcipher_report_stat,
-#endif
 	.maskclear = ~CRYPTO_ALG_TYPE_MASK,
 	.maskset = CRYPTO_ALG_TYPE_MASK,
 	.type = CRYPTO_ALG_TYPE_LSKCIPHER,
diff --git a/crypto/rng.c b/crypto/rng.c
index 279dffdebf59..9d8804e46422 100644
--- a/crypto/rng.c
+++ b/crypto/rng.c
@@ -30,30 +30,24 @@ static int crypto_default_rng_refcnt;
 
 int crypto_rng_reset(struct crypto_rng *tfm, const u8 *seed, unsigned int slen)
 {
-	struct rng_alg *alg = crypto_rng_alg(tfm);
 	u8 *buf = NULL;
 	int err;
 
-	if (IS_ENABLED(CONFIG_CRYPTO_STATS))
-		atomic64_inc(&rng_get_stat(alg)->seed_cnt);
-
 	if (!seed && slen) {
 		buf = kmalloc(slen, GFP_KERNEL);
-		err = -ENOMEM;
 		if (!buf)
-			goto out;
+			return -ENOMEM;
 
 		err = get_random_bytes_wait(buf, slen);
 		if (err)
-			goto free_buf;
+			goto out;
 		seed = buf;
 	}
 
-	err = alg->seed(tfm, seed, slen);
-free_buf:
-	kfree_sensitive(buf);
+	err = crypto_rng_alg(tfm)->seed(tfm, seed, slen);
 out:
-	return crypto_rng_errstat(alg, err);
+	kfree_sensitive(buf);
+	return err;
 }
 EXPORT_SYMBOL_GPL(crypto_rng_reset);
 
@@ -91,27 +85,6 @@ static void crypto_rng_show(struct seq_file *m, struct crypto_alg *alg)
 	seq_printf(m, "seedsize     : %u\n", seedsize(alg));
 }
 
-static int __maybe_unused crypto_rng_report_stat(
-	struct sk_buff *skb, struct crypto_alg *alg)
-{
-	struct rng_alg *rng = __crypto_rng_alg(alg);
-	struct crypto_istat_rng *istat;
-	struct crypto_stat_rng rrng;
-
-	istat = rng_get_stat(rng);
-
-	memset(&rrng, 0, sizeof(rrng));
-
-	strscpy(rrng.type, "rng", sizeof(rrng.type));
-
-	rrng.stat_generate_cnt = atomic64_read(&istat->generate_cnt);
-	rrng.stat_generate_tlen = atomic64_read(&istat->generate_tlen);
-	rrng.stat_seed_cnt = atomic64_read(&istat->seed_cnt);
-	rrng.stat_err_cnt = atomic64_read(&istat->err_cnt);
-
-	return nla_put(skb, CRYPTOCFGA_STAT_RNG, sizeof(rrng), &rrng);
-}
-
 static const struct crypto_type crypto_rng_type = {
 	.extsize = crypto_alg_extsize,
 	.init_tfm = crypto_rng_init_tfm,
@@ -121,9 +94,6 @@ static const struct crypto_type crypto_rng_type = {
 #if IS_ENABLED(CONFIG_CRYPTO_USER)
 	.report = crypto_rng_report,
 #endif
-#ifdef CONFIG_CRYPTO_STATS
-	.report_stat = crypto_rng_report_stat,
-#endif
 	.maskclear = ~CRYPTO_ALG_TYPE_MASK,
 	.maskset = CRYPTO_ALG_TYPE_MASK,
 	.type = CRYPTO_ALG_TYPE_RNG,
@@ -199,7 +169,6 @@ EXPORT_SYMBOL_GPL(crypto_del_default_rng);
 
 int crypto_register_rng(struct rng_alg *alg)
 {
-	struct crypto_istat_rng *istat = rng_get_stat(alg);
 	struct crypto_alg *base = &alg->base;
 
 	if (alg->seedsize > PAGE_SIZE / 8)
@@ -209,9 +178,6 @@ int crypto_register_rng(struct rng_alg *alg)
 	base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
 	base->cra_flags |= CRYPTO_ALG_TYPE_RNG;
 
-	if (IS_ENABLED(CONFIG_CRYPTO_STATS))
-		memset(istat, 0, sizeof(*istat));
-
 	return crypto_register_alg(base);
 }
 EXPORT_SYMBOL_GPL(crypto_register_rng);
diff --git a/crypto/scompress.c b/crypto/scompress.c
index b108a30a7600..9cda4ef84a9b 100644
--- a/crypto/scompress.c
+++ b/crypto/scompress.c
@@ -249,9 +249,6 @@ static const struct crypto_type crypto_scomp_type = {
 #if IS_ENABLED(CONFIG_CRYPTO_USER)
 	.report = crypto_scomp_report,
 #endif
-#ifdef CONFIG_CRYPTO_STATS
-	.report_stat = crypto_acomp_report_stat,
-#endif
 	.maskclear = ~CRYPTO_ALG_TYPE_MASK,
 	.maskset = CRYPTO_ALG_TYPE_MASK,
 	.type = CRYPTO_ALG_TYPE_SCOMPRESS,
@@ -260,11 +257,10 @@ static const struct crypto_type crypto_scomp_type = {
 
 int crypto_register_scomp(struct scomp_alg *alg)
 {
-	struct crypto_alg *base = &alg->calg.base;
-
-	comp_prepare_alg(&alg->calg);
+	struct crypto_alg *base = &alg->base;
 
 	base->cra_type = &crypto_scomp_type;
+	base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
 	base->cra_flags |= CRYPTO_ALG_TYPE_SCOMPRESS;
 
 	return crypto_register_alg(base);
diff --git a/crypto/shash.c b/crypto/shash.c
index c3f7f6a25280..0ffe671b519e 100644
--- a/crypto/shash.c
+++ b/crypto/shash.c
@@ -16,18 +16,6 @@
 
 #include "hash.h"
 
-static inline struct crypto_istat_hash *shash_get_stat(struct shash_alg *alg)
-{
-	return hash_get_stat(&alg->halg);
-}
-
-static inline int crypto_shash_errstat(struct shash_alg *alg, int err)
-{
-	if (IS_ENABLED(CONFIG_CRYPTO_STATS) && err)
-		atomic64_inc(&shash_get_stat(alg)->err_cnt);
-	return err;
-}
-
 int shash_no_setkey(struct crypto_shash *tfm, const u8 *key,
 		    unsigned int keylen)
 {
@@ -61,29 +49,13 @@ EXPORT_SYMBOL_GPL(crypto_shash_setkey);
 int crypto_shash_update(struct shash_desc *desc, const u8 *data,
 			unsigned int len)
 {
-	struct shash_alg *shash = crypto_shash_alg(desc->tfm);
-	int err;
-
-	if (IS_ENABLED(CONFIG_CRYPTO_STATS))
-		atomic64_add(len, &shash_get_stat(shash)->hash_tlen);
-
-	err = shash->update(desc, data, len);
-
-	return crypto_shash_errstat(shash, err);
+	return crypto_shash_alg(desc->tfm)->update(desc, data, len);
 }
 EXPORT_SYMBOL_GPL(crypto_shash_update);
 
 int crypto_shash_final(struct shash_desc *desc, u8 *out)
 {
-	struct shash_alg *shash = crypto_shash_alg(desc->tfm);
-	int err;
-
-	if (IS_ENABLED(CONFIG_CRYPTO_STATS))
-		atomic64_inc(&shash_get_stat(shash)->hash_cnt);
-
-	err = shash->final(desc, out);
-
-	return crypto_shash_errstat(shash, err);
+	return crypto_shash_alg(desc->tfm)->final(desc, out);
 }
 EXPORT_SYMBOL_GPL(crypto_shash_final);
 
@@ -99,20 +71,7 @@ static int shash_default_finup(struct shash_desc *desc, const u8 *data,
 int crypto_shash_finup(struct shash_desc *desc, const u8 *data,
 		       unsigned int len, u8 *out)
 {
-	struct crypto_shash *tfm = desc->tfm;
-	struct shash_alg *shash = crypto_shash_alg(tfm);
-	int err;
-
-	if (IS_ENABLED(CONFIG_CRYPTO_STATS)) {
-		struct crypto_istat_hash *istat = shash_get_stat(shash);
-
-		atomic64_inc(&istat->hash_cnt);
-		atomic64_add(len, &istat->hash_tlen);
-	}
-
-	err = shash->finup(desc, data, len, out);
-
-	return crypto_shash_errstat(shash, err);
+	return crypto_shash_alg(desc->tfm)->finup(desc, data, len, out);
 }
 EXPORT_SYMBOL_GPL(crypto_shash_finup);
 
@@ -129,22 +88,11 @@ int crypto_shash_digest(struct shash_desc *desc, const u8 *data,
 			unsigned int len, u8 *out)
 {
 	struct crypto_shash *tfm = desc->tfm;
-	struct shash_alg *shash = crypto_shash_alg(tfm);
-	int err;
-
-	if (IS_ENABLED(CONFIG_CRYPTO_STATS)) {
-		struct crypto_istat_hash *istat = shash_get_stat(shash);
-
-		atomic64_inc(&istat->hash_cnt);
-		atomic64_add(len, &istat->hash_tlen);
-	}
 
 	if (crypto_shash_get_flags(tfm) & CRYPTO_TFM_NEED_KEY)
-		err = -ENOKEY;
-	else
-		err = shash->digest(desc, data, len, out);
+		return -ENOKEY;
 
-	return crypto_shash_errstat(shash, err);
+	return crypto_shash_alg(desc->tfm)->digest(desc, data, len, out);
 }
 EXPORT_SYMBOL_GPL(crypto_shash_digest);
 
@@ -265,12 +213,6 @@ static void crypto_shash_show(struct seq_file *m, struct crypto_alg *alg)
 	seq_printf(m, "digestsize   : %u\n", salg->digestsize);
 }
 
-static int __maybe_unused crypto_shash_report_stat(
-	struct sk_buff *skb, struct crypto_alg *alg)
-{
-	return crypto_hash_report_stat(skb, alg, "shash");
-}
-
 const struct crypto_type crypto_shash_type = {
 	.extsize = crypto_alg_extsize,
 	.init_tfm = crypto_shash_init_tfm,
@@ -281,9 +223,6 @@ const struct crypto_type crypto_shash_type = {
 #if IS_ENABLED(CONFIG_CRYPTO_USER)
 	.report = crypto_shash_report,
 #endif
-#ifdef CONFIG_CRYPTO_STATS
-	.report_stat = crypto_shash_report_stat,
-#endif
 	.maskclear = ~CRYPTO_ALG_TYPE_MASK,
 	.maskset = CRYPTO_ALG_TYPE_MASK,
 	.type = CRYPTO_ALG_TYPE_SHASH,
@@ -350,7 +289,6 @@ EXPORT_SYMBOL_GPL(crypto_clone_shash);
 
 int hash_prepare_alg(struct hash_alg_common *alg)
 {
-	struct crypto_istat_hash *istat = hash_get_stat(alg);
 	struct crypto_alg *base = &alg->base;
 
 	if (alg->digestsize > HASH_MAX_DIGESTSIZE)
@@ -362,9 +300,6 @@ int hash_prepare_alg(struct hash_alg_common *alg)
 
 	base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
 
-	if (IS_ENABLED(CONFIG_CRYPTO_STATS))
-		memset(istat, 0, sizeof(*istat));
-
 	return 0;
 }
 
diff --git a/crypto/sig.c b/crypto/sig.c
index 224c47019297..7645bedf3a1f 100644
--- a/crypto/sig.c
+++ b/crypto/sig.c
@@ -45,16 +45,6 @@ static int __maybe_unused crypto_sig_report(struct sk_buff *skb,
 	return nla_put(skb, CRYPTOCFGA_REPORT_AKCIPHER, sizeof(rsig), &rsig);
 }
 
-static int __maybe_unused crypto_sig_report_stat(struct sk_buff *skb,
-						 struct crypto_alg *alg)
-{
-	struct crypto_stat_akcipher rsig = {};
-
-	strscpy(rsig.type, "sig", sizeof(rsig.type));
-
-	return nla_put(skb, CRYPTOCFGA_STAT_AKCIPHER, sizeof(rsig), &rsig);
-}
-
 static const struct crypto_type crypto_sig_type = {
 	.extsize = crypto_alg_extsize,
 	.init_tfm = crypto_sig_init_tfm,
@@ -64,9 +54,6 @@ static const struct crypto_type crypto_sig_type = {
 #if IS_ENABLED(CONFIG_CRYPTO_USER)
 	.report = crypto_sig_report,
 #endif
-#ifdef CONFIG_CRYPTO_STATS
-	.report_stat = crypto_sig_report_stat,
-#endif
 	.maskclear = ~CRYPTO_ALG_TYPE_MASK,
 	.maskset = CRYPTO_ALG_TYPE_SIG_MASK,
 	.type = CRYPTO_ALG_TYPE_SIG,
diff --git a/crypto/skcipher.c b/crypto/skcipher.c
index bc70e159d27d..ceed7f33a67b 100644
--- a/crypto/skcipher.c
+++ b/crypto/skcipher.c
@@ -89,25 +89,6 @@ static inline struct skcipher_alg *__crypto_skcipher_alg(
 	return container_of(alg, struct skcipher_alg, base);
 }
 
-static inline struct crypto_istat_cipher *skcipher_get_stat(
-	struct skcipher_alg *alg)
-{
-	return skcipher_get_stat_common(&alg->co);
-}
-
-static inline int crypto_skcipher_errstat(struct skcipher_alg *alg, int err)
-{
-	struct crypto_istat_cipher *istat = skcipher_get_stat(alg);
-
-	if (!IS_ENABLED(CONFIG_CRYPTO_STATS))
-		return err;
-
-	if (err && err != -EINPROGRESS && err != -EBUSY)
-		atomic64_inc(&istat->err_cnt);
-
-	return err;
-}
-
 static int skcipher_done_slow(struct skcipher_walk *walk, unsigned int bsize)
 {
 	u8 *addr;
@@ -654,23 +635,12 @@ int crypto_skcipher_encrypt(struct skcipher_request *req)
 {
 	struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
 	struct skcipher_alg *alg = crypto_skcipher_alg(tfm);
-	int ret;
-
-	if (IS_ENABLED(CONFIG_CRYPTO_STATS)) {
-		struct crypto_istat_cipher *istat = skcipher_get_stat(alg);
-
-		atomic64_inc(&istat->encrypt_cnt);
-		atomic64_add(req->cryptlen, &istat->encrypt_tlen);
-	}
 
 	if (crypto_skcipher_get_flags(tfm) & CRYPTO_TFM_NEED_KEY)
-		ret = -ENOKEY;
-	else if (alg->co.base.cra_type != &crypto_skcipher_type)
-		ret = crypto_lskcipher_encrypt_sg(req);
-	else
-		ret = alg->encrypt(req);
-
-	return crypto_skcipher_errstat(alg, ret);
+		return -ENOKEY;
+	if (alg->co.base.cra_type != &crypto_skcipher_type)
+		return crypto_lskcipher_encrypt_sg(req);
+	return alg->encrypt(req);
 }
 EXPORT_SYMBOL_GPL(crypto_skcipher_encrypt);
 
@@ -678,23 +648,12 @@ int crypto_skcipher_decrypt(struct skcipher_request *req)
 {
 	struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
 	struct skcipher_alg *alg = crypto_skcipher_alg(tfm);
-	int ret;
-
-	if (IS_ENABLED(CONFIG_CRYPTO_STATS)) {
-		struct crypto_istat_cipher *istat = skcipher_get_stat(alg);
-
-		atomic64_inc(&istat->decrypt_cnt);
-		atomic64_add(req->cryptlen, &istat->decrypt_tlen);
-	}
 
 	if (crypto_skcipher_get_flags(tfm) & CRYPTO_TFM_NEED_KEY)
-		ret = -ENOKEY;
-	else if (alg->co.base.cra_type != &crypto_skcipher_type)
-		ret = crypto_lskcipher_decrypt_sg(req);
-	else
-		ret = alg->decrypt(req);
-
-	return crypto_skcipher_errstat(alg, ret);
+		return -ENOKEY;
+	if (alg->co.base.cra_type != &crypto_skcipher_type)
+		return crypto_lskcipher_decrypt_sg(req);
+	return alg->decrypt(req);
 }
 EXPORT_SYMBOL_GPL(crypto_skcipher_decrypt);
 
@@ -846,28 +805,6 @@ static int __maybe_unused crypto_skcipher_report(
 		       sizeof(rblkcipher), &rblkcipher);
 }
 
-static int __maybe_unused crypto_skcipher_report_stat(
-	struct sk_buff *skb, struct crypto_alg *alg)
-{
-	struct skcipher_alg *skcipher = __crypto_skcipher_alg(alg);
-	struct crypto_istat_cipher *istat;
-	struct crypto_stat_cipher rcipher;
-
-	istat = skcipher_get_stat(skcipher);
-
-	memset(&rcipher, 0, sizeof(rcipher));
-
-	strscpy(rcipher.type, "cipher", sizeof(rcipher.type));
-
-	rcipher.stat_encrypt_cnt = atomic64_read(&istat->encrypt_cnt);
-	rcipher.stat_encrypt_tlen = atomic64_read(&istat->encrypt_tlen);
-	rcipher.stat_decrypt_cnt =  atomic64_read(&istat->decrypt_cnt);
-	rcipher.stat_decrypt_tlen = atomic64_read(&istat->decrypt_tlen);
-	rcipher.stat_err_cnt =  atomic64_read(&istat->err_cnt);
-
-	return nla_put(skb, CRYPTOCFGA_STAT_CIPHER, sizeof(rcipher), &rcipher);
-}
-
 static const struct crypto_type crypto_skcipher_type = {
 	.extsize = crypto_skcipher_extsize,
 	.init_tfm = crypto_skcipher_init_tfm,
@@ -878,9 +815,6 @@ static const struct crypto_type crypto_skcipher_type = {
 #if IS_ENABLED(CONFIG_CRYPTO_USER)
 	.report = crypto_skcipher_report,
 #endif
-#ifdef CONFIG_CRYPTO_STATS
-	.report_stat = crypto_skcipher_report_stat,
-#endif
 	.maskclear = ~CRYPTO_ALG_TYPE_MASK,
 	.maskset = CRYPTO_ALG_TYPE_SKCIPHER_MASK,
 	.type = CRYPTO_ALG_TYPE_SKCIPHER,
@@ -935,7 +869,6 @@ EXPORT_SYMBOL_GPL(crypto_has_skcipher);
 
 int skcipher_prepare_alg_common(struct skcipher_alg_common *alg)
 {
-	struct crypto_istat_cipher *istat = skcipher_get_stat_common(alg);
 	struct crypto_alg *base = &alg->base;
 
 	if (alg->ivsize > PAGE_SIZE / 8 || alg->chunksize > PAGE_SIZE / 8 ||
@@ -948,9 +881,6 @@ int skcipher_prepare_alg_common(struct skcipher_alg_common *alg)
 
 	base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
 
-	if (IS_ENABLED(CONFIG_CRYPTO_STATS))
-		memset(istat, 0, sizeof(*istat));
-
 	return 0;
 }
 
diff --git a/crypto/skcipher.h b/crypto/skcipher.h
index 16c9484360da..703651367dd8 100644
--- a/crypto/skcipher.h
+++ b/crypto/skcipher.h
@@ -10,16 +10,6 @@
 #include <crypto/internal/skcipher.h>
 #include "internal.h"
 
-static inline struct crypto_istat_cipher *skcipher_get_stat_common(
-	struct skcipher_alg_common *alg)
-{
-#ifdef CONFIG_CRYPTO_STATS
-	return &alg->stat;
-#else
-	return NULL;
-#endif
-}
-
 int crypto_lskcipher_encrypt_sg(struct skcipher_request *req);
 int crypto_lskcipher_decrypt_sg(struct skcipher_request *req);
 int crypto_init_lskcipher_ops_sg(struct crypto_tfm *tfm);
diff --git a/include/crypto/acompress.h b/include/crypto/acompress.h
index 574cffc90730..d042c90e0907 100644
--- a/include/crypto/acompress.h
+++ b/include/crypto/acompress.h
@@ -56,35 +56,6 @@ struct crypto_acomp {
 	struct crypto_tfm base;
 };
 
-/*
- * struct crypto_istat_compress - statistics for compress algorithm
- * @compress_cnt:	number of compress requests
- * @compress_tlen:	total data size handled by compress requests
- * @decompress_cnt:	number of decompress requests
- * @decompress_tlen:	total data size handled by decompress requests
- * @err_cnt:		number of error for compress requests
- */
-struct crypto_istat_compress {
-	atomic64_t compress_cnt;
-	atomic64_t compress_tlen;
-	atomic64_t decompress_cnt;
-	atomic64_t decompress_tlen;
-	atomic64_t err_cnt;
-};
-
-#ifdef CONFIG_CRYPTO_STATS
-#define COMP_ALG_COMMON_STATS struct crypto_istat_compress stat;
-#else
-#define COMP_ALG_COMMON_STATS
-#endif
-
-#define COMP_ALG_COMMON {			\
-	COMP_ALG_COMMON_STATS			\
-						\
-	struct crypto_alg base;			\
-}
-struct comp_alg_common COMP_ALG_COMMON;
-
 /**
  * DOC: Asynchronous Compression API
  *
@@ -132,23 +103,11 @@ static inline struct crypto_tfm *crypto_acomp_tfm(struct crypto_acomp *tfm)
 	return &tfm->base;
 }
 
-static inline struct comp_alg_common *__crypto_comp_alg_common(
-	struct crypto_alg *alg)
-{
-	return container_of(alg, struct comp_alg_common, base);
-}
-
 static inline struct crypto_acomp *__crypto_acomp_tfm(struct crypto_tfm *tfm)
 {
 	return container_of(tfm, struct crypto_acomp, base);
 }
 
-static inline struct comp_alg_common *crypto_comp_alg_common(
-	struct crypto_acomp *tfm)
-{
-	return __crypto_comp_alg_common(crypto_acomp_tfm(tfm)->__crt_alg);
-}
-
 static inline unsigned int crypto_acomp_reqsize(struct crypto_acomp *tfm)
 {
 	return tfm->reqsize;
@@ -255,27 +214,6 @@ static inline void acomp_request_set_params(struct acomp_req *req,
 		req->flags |= CRYPTO_ACOMP_ALLOC_OUTPUT;
 }
 
-static inline struct crypto_istat_compress *comp_get_stat(
-	struct comp_alg_common *alg)
-{
-#ifdef CONFIG_CRYPTO_STATS
-	return &alg->stat;
-#else
-	return NULL;
-#endif
-}
-
-static inline int crypto_comp_errstat(struct comp_alg_common *alg, int err)
-{
-	if (!IS_ENABLED(CONFIG_CRYPTO_STATS))
-		return err;
-
-	if (err && err != -EINPROGRESS && err != -EBUSY)
-		atomic64_inc(&comp_get_stat(alg)->err_cnt);
-
-	return err;
-}
-
 /**
  * crypto_acomp_compress() -- Invoke asynchronous compress operation
  *
@@ -287,19 +225,7 @@ static inline int crypto_comp_errstat(struct comp_alg_common *alg, int err)
  */
 static inline int crypto_acomp_compress(struct acomp_req *req)
 {
-	struct crypto_acomp *tfm = crypto_acomp_reqtfm(req);
-	struct comp_alg_common *alg;
-
-	alg = crypto_comp_alg_common(tfm);
-
-	if (IS_ENABLED(CONFIG_CRYPTO_STATS)) {
-		struct crypto_istat_compress *istat = comp_get_stat(alg);
-
-		atomic64_inc(&istat->compress_cnt);
-		atomic64_add(req->slen, &istat->compress_tlen);
-	}
-
-	return crypto_comp_errstat(alg, tfm->compress(req));
+	return crypto_acomp_reqtfm(req)->compress(req);
 }
 
 /**
@@ -313,19 +239,7 @@ static inline int crypto_acomp_compress(struct acomp_req *req)
  */
 static inline int crypto_acomp_decompress(struct acomp_req *req)
 {
-	struct crypto_acomp *tfm = crypto_acomp_reqtfm(req);
-	struct comp_alg_common *alg;
-
-	alg = crypto_comp_alg_common(tfm);
-
-	if (IS_ENABLED(CONFIG_CRYPTO_STATS)) {
-		struct crypto_istat_compress *istat = comp_get_stat(alg);
-
-		atomic64_inc(&istat->decompress_cnt);
-		atomic64_add(req->slen, &istat->decompress_tlen);
-	}
-
-	return crypto_comp_errstat(alg, tfm->decompress(req));
+	return crypto_acomp_reqtfm(req)->decompress(req);
 }
 
 #endif
diff --git a/include/crypto/aead.h b/include/crypto/aead.h
index 51382befbe37..0e8a41638678 100644
--- a/include/crypto/aead.h
+++ b/include/crypto/aead.h
@@ -101,22 +101,6 @@ struct aead_request {
 	void *__ctx[] CRYPTO_MINALIGN_ATTR;
 };
 
-/*
- * struct crypto_istat_aead - statistics for AEAD algorithm
- * @encrypt_cnt:	number of encrypt requests
- * @encrypt_tlen:	total data size handled by encrypt requests
- * @decrypt_cnt:	number of decrypt requests
- * @decrypt_tlen:	total data size handled by decrypt requests
- * @err_cnt:		number of error for AEAD requests
- */
-struct crypto_istat_aead {
-	atomic64_t encrypt_cnt;
-	atomic64_t encrypt_tlen;
-	atomic64_t decrypt_cnt;
-	atomic64_t decrypt_tlen;
-	atomic64_t err_cnt;
-};
-
 /**
  * struct aead_alg - AEAD cipher definition
  * @maxauthsize: Set the maximum authentication tag size supported by the
@@ -135,7 +119,6 @@ struct crypto_istat_aead {
  * @setkey: see struct skcipher_alg
  * @encrypt: see struct skcipher_alg
  * @decrypt: see struct skcipher_alg
- * @stat: statistics for AEAD algorithm
  * @ivsize: see struct skcipher_alg
  * @chunksize: see struct skcipher_alg
  * @init: Initialize the cryptographic transformation object. This function
@@ -162,10 +145,6 @@ struct aead_alg {
 	int (*init)(struct crypto_aead *tfm);
 	void (*exit)(struct crypto_aead *tfm);
 
-#ifdef CONFIG_CRYPTO_STATS
-	struct crypto_istat_aead stat;
-#endif
-
 	unsigned int ivsize;
 	unsigned int maxauthsize;
 	unsigned int chunksize;
diff --git a/include/crypto/akcipher.h b/include/crypto/akcipher.h
index 31c111bebb68..18a10cad07aa 100644
--- a/include/crypto/akcipher.h
+++ b/include/crypto/akcipher.h
@@ -54,26 +54,6 @@ struct crypto_akcipher {
 	struct crypto_tfm base;
 };
 
-/*
- * struct crypto_istat_akcipher - statistics for akcipher algorithm
- * @encrypt_cnt:	number of encrypt requests
- * @encrypt_tlen:	total data size handled by encrypt requests
- * @decrypt_cnt:	number of decrypt requests
- * @decrypt_tlen:	total data size handled by decrypt requests
- * @verify_cnt:		number of verify operation
- * @sign_cnt:		number of sign requests
- * @err_cnt:		number of error for akcipher requests
- */
-struct crypto_istat_akcipher {
-	atomic64_t encrypt_cnt;
-	atomic64_t encrypt_tlen;
-	atomic64_t decrypt_cnt;
-	atomic64_t decrypt_tlen;
-	atomic64_t verify_cnt;
-	atomic64_t sign_cnt;
-	atomic64_t err_cnt;
-};
-
 /**
  * struct akcipher_alg - generic public key algorithm
  *
@@ -110,7 +90,6 @@ struct crypto_istat_akcipher {
  * @exit:	Deinitialize the cryptographic transformation object. This is a
  *		counterpart to @init, used to remove various changes set in
  *		@init.
- * @stat:	Statistics for akcipher algorithm
  *
  * @base:	Common crypto API algorithm data structure
  */
@@ -127,10 +106,6 @@ struct akcipher_alg {
 	int (*init)(struct crypto_akcipher *tfm);
 	void (*exit)(struct crypto_akcipher *tfm);
 
-#ifdef CONFIG_CRYPTO_STATS
-	struct crypto_istat_akcipher stat;
-#endif
-
 	struct crypto_alg base;
 };
 
@@ -302,27 +277,6 @@ static inline unsigned int crypto_akcipher_maxsize(struct crypto_akcipher *tfm)
 	return alg->max_size(tfm);
 }
 
-static inline struct crypto_istat_akcipher *akcipher_get_stat(
-	struct akcipher_alg *alg)
-{
-#ifdef CONFIG_CRYPTO_STATS
-	return &alg->stat;
-#else
-	return NULL;
-#endif
-}
-
-static inline int crypto_akcipher_errstat(struct akcipher_alg *alg, int err)
-{
-	if (!IS_ENABLED(CONFIG_CRYPTO_STATS))
-		return err;
-
-	if (err && err != -EINPROGRESS && err != -EBUSY)
-		atomic64_inc(&akcipher_get_stat(alg)->err_cnt);
-
-	return err;
-}
-
 /**
  * crypto_akcipher_encrypt() - Invoke public key encrypt operation
  *
@@ -336,16 +290,8 @@ static inline int crypto_akcipher_errstat(struct akcipher_alg *alg, int err)
 static inline int crypto_akcipher_encrypt(struct akcipher_request *req)
 {
 	struct crypto_akcipher *tfm = crypto_akcipher_reqtfm(req);
-	struct akcipher_alg *alg = crypto_akcipher_alg(tfm);
 
-	if (IS_ENABLED(CONFIG_CRYPTO_STATS)) {
-		struct crypto_istat_akcipher *istat = akcipher_get_stat(alg);
-
-		atomic64_inc(&istat->encrypt_cnt);
-		atomic64_add(req->src_len, &istat->encrypt_tlen);
-	}
-
-	return crypto_akcipher_errstat(alg, alg->encrypt(req));
+	return crypto_akcipher_alg(tfm)->encrypt(req);
 }
 
 /**
@@ -361,16 +307,8 @@ static inline int crypto_akcipher_encrypt(struct akcipher_request *req)
 static inline int crypto_akcipher_decrypt(struct akcipher_request *req)
 {
 	struct crypto_akcipher *tfm = crypto_akcipher_reqtfm(req);
-	struct akcipher_alg *alg = crypto_akcipher_alg(tfm);
 
-	if (IS_ENABLED(CONFIG_CRYPTO_STATS)) {
-		struct crypto_istat_akcipher *istat = akcipher_get_stat(alg);
-
-		atomic64_inc(&istat->decrypt_cnt);
-		atomic64_add(req->src_len, &istat->decrypt_tlen);
-	}
-
-	return crypto_akcipher_errstat(alg, alg->decrypt(req));
+	return crypto_akcipher_alg(tfm)->decrypt(req);
 }
 
 /**
@@ -422,12 +360,8 @@ int crypto_akcipher_sync_decrypt(struct crypto_akcipher *tfm,
 static inline int crypto_akcipher_sign(struct akcipher_request *req)
 {
 	struct crypto_akcipher *tfm = crypto_akcipher_reqtfm(req);
-	struct akcipher_alg *alg = crypto_akcipher_alg(tfm);
 
-	if (IS_ENABLED(CONFIG_CRYPTO_STATS))
-		atomic64_inc(&akcipher_get_stat(alg)->sign_cnt);
-
-	return crypto_akcipher_errstat(alg, alg->sign(req));
+	return crypto_akcipher_alg(tfm)->sign(req);
 }
 
 /**
@@ -447,12 +381,8 @@ static inline int crypto_akcipher_sign(struct akcipher_request *req)
 static inline int crypto_akcipher_verify(struct akcipher_request *req)
 {
 	struct crypto_akcipher *tfm = crypto_akcipher_reqtfm(req);
-	struct akcipher_alg *alg = crypto_akcipher_alg(tfm);
-
-	if (IS_ENABLED(CONFIG_CRYPTO_STATS))
-		atomic64_inc(&akcipher_get_stat(alg)->verify_cnt);
 
-	return crypto_akcipher_errstat(alg, alg->verify(req));
+	return crypto_akcipher_alg(tfm)->verify(req);
 }
 
 /**
diff --git a/include/crypto/algapi.h b/include/crypto/algapi.h
index 7a4a71af653f..156de41ca760 100644
--- a/include/crypto/algapi.h
+++ b/include/crypto/algapi.h
@@ -61,9 +61,6 @@ struct crypto_type {
 	void (*show)(struct seq_file *m, struct crypto_alg *alg);
 	int (*report)(struct sk_buff *skb, struct crypto_alg *alg);
 	void (*free)(struct crypto_instance *inst);
-#ifdef CONFIG_CRYPTO_STATS
-	int (*report_stat)(struct sk_buff *skb, struct crypto_alg *alg);
-#endif
 
 	unsigned int type;
 	unsigned int maskclear;
diff --git a/include/crypto/hash.h b/include/crypto/hash.h
index 5d61f576cfc8..0014bdd81ab7 100644
--- a/include/crypto/hash.h
+++ b/include/crypto/hash.h
@@ -24,26 +24,7 @@ struct crypto_ahash;
  */
 
 /*
- * struct crypto_istat_hash - statistics for has algorithm
- * @hash_cnt:		number of hash requests
- * @hash_tlen:		total data size hashed
- * @err_cnt:		number of error for hash requests
- */
-struct crypto_istat_hash {
-	atomic64_t hash_cnt;
-	atomic64_t hash_tlen;
-	atomic64_t err_cnt;
-};
-
-#ifdef CONFIG_CRYPTO_STATS
-#define HASH_ALG_COMMON_STAT struct crypto_istat_hash stat;
-#else
-#define HASH_ALG_COMMON_STAT
-#endif
-
-/*
  * struct hash_alg_common - define properties of message digest
- * @stat: Statistics for hash algorithm.
  * @digestsize: Size of the result of the transformation. A buffer of this size
  *	        must be available to the @final and @finup calls, so they can
  *	        store the resulting hash into it. For various predefined sizes,
@@ -60,8 +41,6 @@ struct crypto_istat_hash {
  *	  information.
  */
 #define HASH_ALG_COMMON {		\
-	HASH_ALG_COMMON_STAT		\
-					\
 	unsigned int digestsize;	\
 	unsigned int statesize;		\
 					\
@@ -243,7 +222,6 @@ struct shash_alg {
 	};
 };
 #undef HASH_ALG_COMMON
-#undef HASH_ALG_COMMON_STAT
 
 struct crypto_ahash {
 	bool using_shash; /* Underlying algorithm is shash, not ahash */
diff --git a/include/crypto/internal/acompress.h b/include/crypto/internal/acompress.h
index 4ac46bafba9d..475e60a9f9ea 100644
--- a/include/crypto/internal/acompress.h
+++ b/include/crypto/internal/acompress.h
@@ -31,9 +31,7 @@
  *		@init.
  *
  * @reqsize:	Context size for (de)compression requests
- * @stat:	Statistics for compress algorithm
  * @base:	Common crypto API algorithm data structure
- * @calg:	Cmonn algorithm data structure shared with scomp
  */
 struct acomp_alg {
 	int (*compress)(struct acomp_req *req);
@@ -44,10 +42,7 @@ struct acomp_alg {
 
 	unsigned int reqsize;
 
-	union {
-		struct COMP_ALG_COMMON;
-		struct comp_alg_common calg;
-	};
+	struct crypto_alg base;
 };
 
 /*
diff --git a/include/crypto/internal/cryptouser.h b/include/crypto/internal/cryptouser.h
deleted file mode 100644
index fd54074332f5..000000000000
--- a/include/crypto/internal/cryptouser.h
+++ /dev/null
@@ -1,16 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#include <linux/cryptouser.h>
-#include <net/netlink.h>
-
-struct crypto_alg *crypto_alg_match(struct crypto_user_alg *p, int exact);
-
-#ifdef CONFIG_CRYPTO_STATS
-int crypto_reportstat(struct sk_buff *in_skb, struct nlmsghdr *in_nlh, struct nlattr **attrs);
-#else
-static inline int crypto_reportstat(struct sk_buff *in_skb,
-				    struct nlmsghdr *in_nlh,
-				    struct nlattr **attrs)
-{
-	return -ENOTSUPP;
-}
-#endif
diff --git a/include/crypto/internal/scompress.h b/include/crypto/internal/scompress.h
index 858fe3965ae3..5a75f2db18ce 100644
--- a/include/crypto/internal/scompress.h
+++ b/include/crypto/internal/scompress.h
@@ -27,9 +27,7 @@ struct crypto_scomp {
  * @free_ctx:	Function frees context allocated with alloc_ctx
  * @compress:	Function performs a compress operation
  * @decompress:	Function performs a de-compress operation
- * @stat:	Statistics for compress algorithm
  * @base:	Common crypto API algorithm data structure
- * @calg:	Cmonn algorithm data structure shared with acomp
  */
 struct scomp_alg {
 	void *(*alloc_ctx)(struct crypto_scomp *tfm);
@@ -40,11 +38,7 @@ struct scomp_alg {
 	int (*decompress)(struct crypto_scomp *tfm, const u8 *src,
 			  unsigned int slen, u8 *dst, unsigned int *dlen,
 			  void *ctx);
-
-	union {
-		struct COMP_ALG_COMMON;
-		struct comp_alg_common calg;
-	};
+	struct crypto_alg base;
 };
 
 static inline struct scomp_alg *__crypto_scomp_alg(struct crypto_alg *alg)
diff --git a/include/crypto/kpp.h b/include/crypto/kpp.h
index 1988e24a0d1d..2d9c4de57b69 100644
--- a/include/crypto/kpp.h
+++ b/include/crypto/kpp.h
@@ -51,20 +51,6 @@ struct crypto_kpp {
 	struct crypto_tfm base;
 };
 
-/*
- * struct crypto_istat_kpp - statistics for KPP algorithm
- * @setsecret_cnt:		number of setsecrey operation
- * @generate_public_key_cnt:	number of generate_public_key operation
- * @compute_shared_secret_cnt:	number of compute_shared_secret operation
- * @err_cnt:			number of error for KPP requests
- */
-struct crypto_istat_kpp {
-	atomic64_t setsecret_cnt;
-	atomic64_t generate_public_key_cnt;
-	atomic64_t compute_shared_secret_cnt;
-	atomic64_t err_cnt;
-};
-
 /**
  * struct kpp_alg - generic key-agreement protocol primitives
  *
@@ -87,7 +73,6 @@ struct crypto_istat_kpp {
  * @exit:		Undo everything @init did.
  *
  * @base:		Common crypto API algorithm data structure
- * @stat:		Statistics for KPP algorithm
  */
 struct kpp_alg {
 	int (*set_secret)(struct crypto_kpp *tfm, const void *buffer,
@@ -100,10 +85,6 @@ struct kpp_alg {
 	int (*init)(struct crypto_kpp *tfm);
 	void (*exit)(struct crypto_kpp *tfm);
 
-#ifdef CONFIG_CRYPTO_STATS
-	struct crypto_istat_kpp stat;
-#endif
-
 	struct crypto_alg base;
 };
 
@@ -291,26 +272,6 @@ struct kpp_secret {
 	unsigned short len;
 };
 
-static inline struct crypto_istat_kpp *kpp_get_stat(struct kpp_alg *alg)
-{
-#ifdef CONFIG_CRYPTO_STATS
-	return &alg->stat;
-#else
-	return NULL;
-#endif
-}
-
-static inline int crypto_kpp_errstat(struct kpp_alg *alg, int err)
-{
-	if (!IS_ENABLED(CONFIG_CRYPTO_STATS))
-		return err;
-
-	if (err && err != -EINPROGRESS && err != -EBUSY)
-		atomic64_inc(&kpp_get_stat(alg)->err_cnt);
-
-	return err;
-}
-
 /**
  * crypto_kpp_set_secret() - Invoke kpp operation
  *
@@ -329,12 +290,7 @@ static inline int crypto_kpp_errstat(struct kpp_alg *alg, int err)
 static inline int crypto_kpp_set_secret(struct crypto_kpp *tfm,
 					const void *buffer, unsigned int len)
 {
-	struct kpp_alg *alg = crypto_kpp_alg(tfm);
-
-	if (IS_ENABLED(CONFIG_CRYPTO_STATS))
-		atomic64_inc(&kpp_get_stat(alg)->setsecret_cnt);
-
-	return crypto_kpp_errstat(alg, alg->set_secret(tfm, buffer, len));
+	return crypto_kpp_alg(tfm)->set_secret(tfm, buffer, len);
 }
 
 /**
@@ -353,12 +309,8 @@ static inline int crypto_kpp_set_secret(struct crypto_kpp *tfm,
 static inline int crypto_kpp_generate_public_key(struct kpp_request *req)
 {
 	struct crypto_kpp *tfm = crypto_kpp_reqtfm(req);
-	struct kpp_alg *alg = crypto_kpp_alg(tfm);
-
-	if (IS_ENABLED(CONFIG_CRYPTO_STATS))
-		atomic64_inc(&kpp_get_stat(alg)->generate_public_key_cnt);
 
-	return crypto_kpp_errstat(alg, alg->generate_public_key(req));
+	return crypto_kpp_alg(tfm)->generate_public_key(req);
 }
 
 /**
@@ -374,12 +326,8 @@ static inline int crypto_kpp_generate_public_key(struct kpp_request *req)
 static inline int crypto_kpp_compute_shared_secret(struct kpp_request *req)
 {
 	struct crypto_kpp *tfm = crypto_kpp_reqtfm(req);
-	struct kpp_alg *alg = crypto_kpp_alg(tfm);
-
-	if (IS_ENABLED(CONFIG_CRYPTO_STATS))
-		atomic64_inc(&kpp_get_stat(alg)->compute_shared_secret_cnt);
 
-	return crypto_kpp_errstat(alg, alg->compute_shared_secret(req));
+	return crypto_kpp_alg(tfm)->compute_shared_secret(req);
 }
 
 /**
diff --git a/include/crypto/rng.h b/include/crypto/rng.h
index 6abe5102e5fb..5ac4388f50e1 100644
--- a/include/crypto/rng.h
+++ b/include/crypto/rng.h
@@ -15,20 +15,6 @@
 
 struct crypto_rng;
 
-/*
- * struct crypto_istat_rng: statistics for RNG algorithm
- * @generate_cnt:	number of RNG generate requests
- * @generate_tlen:	total data size of generated data by the RNG
- * @seed_cnt:		number of times the RNG was seeded
- * @err_cnt:		number of error for RNG requests
- */
-struct crypto_istat_rng {
-	atomic64_t generate_cnt;
-	atomic64_t generate_tlen;
-	atomic64_t seed_cnt;
-	atomic64_t err_cnt;
-};
-
 /**
  * struct rng_alg - random number generator definition
  *
@@ -46,7 +32,6 @@ struct crypto_istat_rng {
  *		size of the seed is defined with @seedsize .
  * @set_ent:	Set entropy that would otherwise be obtained from
  *		entropy source.  Internal use only.
- * @stat:	Statistics for rng algorithm
  * @seedsize:	The seed size required for a random number generator
  *		initialization defined with this variable. Some
  *		random number generators does not require a seed
@@ -63,10 +48,6 @@ struct rng_alg {
 	void (*set_ent)(struct crypto_rng *tfm, const u8 *data,
 			unsigned int len);
 
-#ifdef CONFIG_CRYPTO_STATS
-	struct crypto_istat_rng stat;
-#endif
-
 	unsigned int seedsize;
 
 	struct crypto_alg base;
@@ -144,26 +125,6 @@ static inline void crypto_free_rng(struct crypto_rng *tfm)
 	crypto_destroy_tfm(tfm, crypto_rng_tfm(tfm));
 }
 
-static inline struct crypto_istat_rng *rng_get_stat(struct rng_alg *alg)
-{
-#ifdef CONFIG_CRYPTO_STATS
-	return &alg->stat;
-#else
-	return NULL;
-#endif
-}
-
-static inline int crypto_rng_errstat(struct rng_alg *alg, int err)
-{
-	if (!IS_ENABLED(CONFIG_CRYPTO_STATS))
-		return err;
-
-	if (err && err != -EINPROGRESS && err != -EBUSY)
-		atomic64_inc(&rng_get_stat(alg)->err_cnt);
-
-	return err;
-}
-
 /**
  * crypto_rng_generate() - get random number
  * @tfm: cipher handle
@@ -182,17 +143,7 @@ static inline int crypto_rng_generate(struct crypto_rng *tfm,
 				      const u8 *src, unsigned int slen,
 				      u8 *dst, unsigned int dlen)
 {
-	struct rng_alg *alg = crypto_rng_alg(tfm);
-
-	if (IS_ENABLED(CONFIG_CRYPTO_STATS)) {
-		struct crypto_istat_rng *istat = rng_get_stat(alg);
-
-		atomic64_inc(&istat->generate_cnt);
-		atomic64_add(dlen, &istat->generate_tlen);
-	}
-
-	return crypto_rng_errstat(alg,
-				  alg->generate(tfm, src, slen, dst, dlen));
+	return crypto_rng_alg(tfm)->generate(tfm, src, slen, dst, dlen);
 }
 
 /**
diff --git a/include/crypto/skcipher.h b/include/crypto/skcipher.h
index c8857d7bdb37..74d47e23374e 100644
--- a/include/crypto/skcipher.h
+++ b/include/crypto/skcipher.h
@@ -65,28 +65,6 @@ struct crypto_lskcipher {
 };
 
 /*
- * struct crypto_istat_cipher - statistics for cipher algorithm
- * @encrypt_cnt:	number of encrypt requests
- * @encrypt_tlen:	total data size handled by encrypt requests
- * @decrypt_cnt:	number of decrypt requests
- * @decrypt_tlen:	total data size handled by decrypt requests
- * @err_cnt:		number of error for cipher requests
- */
-struct crypto_istat_cipher {
-	atomic64_t encrypt_cnt;
-	atomic64_t encrypt_tlen;
-	atomic64_t decrypt_cnt;
-	atomic64_t decrypt_tlen;
-	atomic64_t err_cnt;
-};
-
-#ifdef CONFIG_CRYPTO_STATS
-#define SKCIPHER_ALG_COMMON_STAT struct crypto_istat_cipher stat;
-#else
-#define SKCIPHER_ALG_COMMON_STAT
-#endif
-
-/*
  * struct skcipher_alg_common - common properties of skcipher_alg
  * @min_keysize: Minimum key size supported by the transformation. This is the
  *		 smallest key length supported by this transformation algorithm.
@@ -103,7 +81,6 @@ struct crypto_istat_cipher {
  * @chunksize: Equal to the block size except for stream ciphers such as
  *	       CTR where it is set to the underlying block size.
  * @statesize: Size of the internal state for the algorithm.
- * @stat: Statistics for cipher algorithm
  * @base: Definition of a generic crypto algorithm.
  */
 #define SKCIPHER_ALG_COMMON {		\
@@ -113,8 +90,6 @@ struct crypto_istat_cipher {
 	unsigned int chunksize;		\
 	unsigned int statesize;		\
 					\
-	SKCIPHER_ALG_COMMON_STAT	\
-					\
 	struct crypto_alg base;		\
 }
 struct skcipher_alg_common SKCIPHER_ALG_COMMON;
diff --git a/include/uapi/linux/cryptouser.h b/include/uapi/linux/cryptouser.h
index 5730c67f0617..e163670d60f7 100644
--- a/include/uapi/linux/cryptouser.h
+++ b/include/uapi/linux/cryptouser.h
@@ -54,16 +54,16 @@ enum crypto_attr_type_t {
 	CRYPTOCFGA_REPORT_AKCIPHER,	/* struct crypto_report_akcipher */
 	CRYPTOCFGA_REPORT_KPP,		/* struct crypto_report_kpp */
 	CRYPTOCFGA_REPORT_ACOMP,	/* struct crypto_report_acomp */
-	CRYPTOCFGA_STAT_LARVAL,		/* struct crypto_stat */
-	CRYPTOCFGA_STAT_HASH,		/* struct crypto_stat */
-	CRYPTOCFGA_STAT_BLKCIPHER,	/* struct crypto_stat */
-	CRYPTOCFGA_STAT_AEAD,		/* struct crypto_stat */
-	CRYPTOCFGA_STAT_COMPRESS,	/* struct crypto_stat */
-	CRYPTOCFGA_STAT_RNG,		/* struct crypto_stat */
-	CRYPTOCFGA_STAT_CIPHER,		/* struct crypto_stat */
-	CRYPTOCFGA_STAT_AKCIPHER,	/* struct crypto_stat */
-	CRYPTOCFGA_STAT_KPP,		/* struct crypto_stat */
-	CRYPTOCFGA_STAT_ACOMP,		/* struct crypto_stat */
+	CRYPTOCFGA_STAT_LARVAL,		/* No longer supported */
+	CRYPTOCFGA_STAT_HASH,		/* No longer supported */
+	CRYPTOCFGA_STAT_BLKCIPHER,	/* No longer supported */
+	CRYPTOCFGA_STAT_AEAD,		/* No longer supported */
+	CRYPTOCFGA_STAT_COMPRESS,	/* No longer supported */
+	CRYPTOCFGA_STAT_RNG,		/* No longer supported */
+	CRYPTOCFGA_STAT_CIPHER,		/* No longer supported */
+	CRYPTOCFGA_STAT_AKCIPHER,	/* No longer supported */
+	CRYPTOCFGA_STAT_KPP,		/* No longer supported */
+	CRYPTOCFGA_STAT_ACOMP,		/* No longer supported */
 	__CRYPTOCFGA_MAX
 
 #define CRYPTOCFGA_MAX (__CRYPTOCFGA_MAX - 1)
@@ -79,6 +79,7 @@ struct crypto_user_alg {
 	__u32 cru_flags;
 };
 
+/* No longer supported, do not use. */
 struct crypto_stat_aead {
 	char type[CRYPTO_MAX_NAME];
 	__u64 stat_encrypt_cnt;
@@ -88,6 +89,7 @@ struct crypto_stat_aead {
 	__u64 stat_err_cnt;
 };
 
+/* No longer supported, do not use. */
 struct crypto_stat_akcipher {
 	char type[CRYPTO_MAX_NAME];
 	__u64 stat_encrypt_cnt;
@@ -99,6 +101,7 @@ struct crypto_stat_akcipher {
 	__u64 stat_err_cnt;
 };
 
+/* No longer supported, do not use. */
 struct crypto_stat_cipher {
 	char type[CRYPTO_MAX_NAME];
 	__u64 stat_encrypt_cnt;
@@ -108,6 +111,7 @@ struct crypto_stat_cipher {
 	__u64 stat_err_cnt;
 };
 
+/* No longer supported, do not use. */
 struct crypto_stat_compress {
 	char type[CRYPTO_MAX_NAME];
 	__u64 stat_compress_cnt;
@@ -117,6 +121,7 @@ struct crypto_stat_compress {
 	__u64 stat_err_cnt;
 };
 
+/* No longer supported, do not use. */
 struct crypto_stat_hash {
 	char type[CRYPTO_MAX_NAME];
 	__u64 stat_hash_cnt;
@@ -124,6 +129,7 @@ struct crypto_stat_hash {
 	__u64 stat_err_cnt;
 };
 
+/* No longer supported, do not use. */
 struct crypto_stat_kpp {
 	char type[CRYPTO_MAX_NAME];
 	__u64 stat_setsecret_cnt;
@@ -132,6 +138,7 @@ struct crypto_stat_kpp {
 	__u64 stat_err_cnt;
 };
 
+/* No longer supported, do not use. */
 struct crypto_stat_rng {
 	char type[CRYPTO_MAX_NAME];
 	__u64 stat_generate_cnt;
@@ -140,6 +147,7 @@ struct crypto_stat_rng {
 	__u64 stat_err_cnt;
 };
 
+/* No longer supported, do not use. */
 struct crypto_stat_larval {
 	char type[CRYPTO_MAX_NAME];
 };