From: Eric Biggers <ebiggers@google.com>
Date: Sat, 20 May 2023 17:31:05 +0000 (-0700)
Subject: crypto: Kconfig - warn about performance overhead of CRYPTO_STATS
X-Git-Tag: v6.5-rc1~108^2~48
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=66dd59b7aa55d0ea6c0eebfbfe4353eadaac5e1b;p=thirdparty%2Fkernel%2Flinux.git

crypto: Kconfig - warn about performance overhead of CRYPTO_STATS

Make the help text for CRYPTO_STATS explicitly mention that it reduces
the performance of the crypto API.

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

diff --git a/crypto/Kconfig b/crypto/Kconfig
index 42751d63cd4d9..fdf3742f1106b 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -1393,6 +1393,9 @@ config CRYPTO_STATS
 	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)