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[RFC,v1,05/13] crypto: iaa - Make async mode the default.

Message ID 20241018064101.336232-6-kanchana.p.sridhar@intel.com (mailing list archive)
State RFC
Delegated to: Herbert Xu
Headers show
Series zswap IAA compress batching | expand

Commit Message

Sridhar, Kanchana P Oct. 18, 2024, 6:40 a.m. UTC 
This patch makes it easier for IAA hardware acceleration in the iaa_crypto
driver to be loaded by default in the most efficient/recommended "async"
mode, namely, asynchronous submission of descriptors, followed by polling
for job completions. Earlier, the "sync" mode used to be the default.

This way, anyone that wants to use IAA can do so after building the kernel,
and *without* having to go through these steps to use async poll:

  1) disable all the IAA device/wq bindings that happen at boot time
  2) rmmod iaa_crypto
  3) modprobe iaa_crypto
  4) echo async > /sys/bus/dsa/drivers/crypto/sync_mode
  5) re-run initialization of the IAA devices and wqs

Signed-off-by: Kanchana P Sridhar <kanchana.p.sridhar@intel.com>
---
 drivers/crypto/intel/iaa/iaa_crypto_main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/drivers/crypto/intel/iaa/iaa_crypto_main.c b/drivers/crypto/intel/iaa/iaa_crypto_main.c
index 6a8577ac1330..6c262b1eb09d 100644
--- a/drivers/crypto/intel/iaa/iaa_crypto_main.c
+++ b/drivers/crypto/intel/iaa/iaa_crypto_main.c
@@ -153,7 +153,7 @@  static DRIVER_ATTR_RW(verify_compress);
  */
 
 /* Use async mode */
-static bool async_mode;
+static bool async_mode = true;
 /* Use interrupts */
 static bool use_irq;