This patch makes it easier for IAA hardware acceleration in the iaa_crypto
driver to be loaded by default with "iaa_verify_compress" disabled, to
facilitate performance comparisons with software compressors (which also
do not run compress verification by default). Earlier, iaa_crypto compress
verification used to be enabled by default.
The iaa_crypto driver documentation has been updated with this change.
With this patch, if users want to enable compress verification, they can do
so with these steps:
1) disable all the IAA device/wq bindings that happen at boot time
2) rmmod iaa_crypto
3) modprobe iaa_crypto
4) echo 1 > /sys/bus/dsa/drivers/crypto/verify_compress
5) re-run initialization of the IAA devices and wqs
Signed-off-by: Kanchana P Sridhar <kanchana.p.sridhar@xxxxxxxxx>
---
Documentation/driver-api/crypto/iaa/iaa-crypto.rst | 2 +-
drivers/crypto/intel/iaa/iaa_crypto_main.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/Documentation/driver-api/crypto/iaa/iaa-crypto.rst b/Documentation/driver-api/crypto/iaa/iaa-crypto.rst
index 4c235bf769824..9d2f3f895bdd8 100644
--- a/Documentation/driver-api/crypto/iaa/iaa-crypto.rst
+++ b/Documentation/driver-api/crypto/iaa/iaa-crypto.rst
@@ -239,7 +239,7 @@ The available attributes are:
echo 0 > /sys/bus/dsa/drivers/crypto/verify_compress
- The default setting is '1' - verify all compresses.
+ The default setting is '0' - to not verify compresses.
- sync_mode
diff --git a/drivers/crypto/intel/iaa/iaa_crypto_main.c b/drivers/crypto/intel/iaa/iaa_crypto_main.c
index 7b5b202a8021a..1166077900522 100644
--- a/drivers/crypto/intel/iaa/iaa_crypto_main.c
+++ b/drivers/crypto/intel/iaa/iaa_crypto_main.c
@@ -120,7 +120,7 @@ static bool iaa_distribute_decomps;
static bool iaa_distribute_comps = true;
/* Verify results of IAA compress or not */
-static bool iaa_verify_compress = true;
+static bool iaa_verify_compress;
/*
* The iaa crypto driver supports three 'sync' methods determining how
--
2.27.0
