linux-kernel - [PATCH v10 19/25] crypto: iaa - IAA acomp_algs register the get_batch

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20250704042323.10318-20-kanchana.p.sridhar@intel.com>
Date: Thu,  3 Jul 2025 21:23:17 -0700
From: Kanchana P Sridhar <kanchana.p.sridhar@...el.com>
To: linux-kernel@...r.kernel.org,
	linux-mm@...ck.org,
	hannes@...xchg.org,
	yosry.ahmed@...ux.dev,
	nphamcs@...il.com,
	chengming.zhou@...ux.dev,
	usamaarif642@...il.com,
	ryan.roberts@....com,
	21cnbao@...il.com,
	ying.huang@...ux.alibaba.com,
	akpm@...ux-foundation.org,
	senozhatsky@...omium.org,
	linux-crypto@...r.kernel.org,
	herbert@...dor.apana.org.au,
	davem@...emloft.net,
	clabbe@...libre.com,
	ardb@...nel.org,
	ebiggers@...gle.com,
	surenb@...gle.com,
	kristen.c.accardi@...el.com,
	vinicius.gomes@...el.com
Cc: wajdi.k.feghali@...el.com,
	vinodh.gopal@...el.com,
	kanchana.p.sridhar@...el.com
Subject: [PATCH v10 19/25] crypto: iaa - IAA acomp_algs register the get_batch_size() interface.

The Fixed ("deflate-iaa") and Dynamic ("deflate-iaa-dynamic") IAA
acomp_algs register an implementation for get_batch_size(). zswap can
query crypto_acomp_batch_size() to get the maximum number of requests
that can be batch [de]compressed. zswap can use the minimum of this, and
any zswap-specific upper limits for batch-size to allocate batching
resources.

This enables zswap to compress/decompress pages in parallel in the IAA
hardware accelerator to improve swapout/swapin performance and memory
savings.

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

diff --git a/drivers/crypto/intel/iaa/iaa_crypto_main.c b/drivers/crypto/intel/iaa/iaa_crypto_main.c
index 30782478b18e2..b4b1c3e0fbfd9 100644
--- a/drivers/crypto/intel/iaa/iaa_crypto_main.c
+++ b/drivers/crypto/intel/iaa/iaa_crypto_main.c
@@ -2781,6 +2781,7 @@ static struct acomp_alg iaa_acomp_fixed_deflate = {
 	.init			= iaa_comp_init_fixed,
 	.compress		= iaa_comp_acompress_main,
 	.decompress		= iaa_comp_adecompress_main,
+	.get_batch_size		= iaa_comp_get_max_batch_size,
 	.base			= {
 		.cra_name		= "deflate",
 		.cra_driver_name	= "deflate-iaa",
@@ -2806,6 +2807,7 @@ static struct acomp_alg iaa_acomp_dynamic_deflate = {
 	.init			= iaa_comp_init_dynamic,
 	.compress		= iaa_comp_acompress_main,
 	.decompress		= iaa_comp_adecompress_main,
+	.get_batch_size		= iaa_comp_get_max_batch_size,
 	.base			= {
 		.cra_name		= "deflate",
 		.cra_driver_name	= "deflate-iaa-dynamic",
-- 
2.27.0