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authorBjörn Bidar2022-03-25 02:51:40 +0200
committerBjörn Bidar2022-06-11 14:12:36 +0300
commit034adcf2fd3311bba3f58b8575b0be699ab3bd70 (patch)
treea8934d717407ce664ecf241b2d06d7543d7cce72 /0030-ZEN-dm-crypt-Disable-workqueues-for-crypto-operation.patch
parent05a0260e8dc51ce338d4ba7d1a9ffcd6b73d04b2 (diff)
downloadaur-034adcf2fd3311bba3f58b8575b0be699ab3bd70.tar.gz
Update to 5.18.0.pf1
- New upstream release based on 5.18.0 - Update kernel configs from arch and arch32 - Disable projectc patch-set for now in favor of ZEN interactive patches - Add more sub-arches - Remove Silvermont and Ivybridge from optimzed builds from build_pkgs, add: - generic-v2 - generic-v3 - generiv-v4 - rocketlake - alderlake
Diffstat (limited to '0030-ZEN-dm-crypt-Disable-workqueues-for-crypto-operation.patch')
-rw-r--r--0030-ZEN-dm-crypt-Disable-workqueues-for-crypto-operation.patch48
1 files changed, 48 insertions, 0 deletions
diff --git a/0030-ZEN-dm-crypt-Disable-workqueues-for-crypto-operation.patch b/0030-ZEN-dm-crypt-Disable-workqueues-for-crypto-operation.patch
new file mode 100644
index 000000000000..a3e56a4cbc59
--- /dev/null
+++ b/0030-ZEN-dm-crypt-Disable-workqueues-for-crypto-operation.patch
@@ -0,0 +1,48 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Steven Barrett <steven@liquorix.net>
+Date: Sat, 21 May 2022 15:15:09 -0500
+Subject: [PATCH] ZEN: dm-crypt: Disable workqueues for crypto operations
+
+Queueing in dm-crypt for crypto operations reduces performance on modern
+systems. As discussed in an article from Cloudflare, they discovered
+that queuing was introduced because the crypto subsystem used to be
+synchronous. Since it's now asynchronous, we get double queueing when
+using the subsystem through dm-crypt. This is obviously undesirable and
+reduces throughput and increases latency.
+
+Disable queueing when using our Zen Interactive configuration.
+
+Fixes: https://github.com/zen-kernel/zen-kernel/issues/282
+---
+ drivers/md/dm-crypt.c | 5 +++++
+ init/Kconfig | 1 +
+ 2 files changed, 6 insertions(+)
+
+diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
+index fb80539865d7c0499c39dab9c652348d1164af81..11031338d95f7ef546e3ed68f359bf956583c1be 100644
+--- a/drivers/md/dm-crypt.c
++++ b/drivers/md/dm-crypt.c
+@@ -3137,6 +3137,11 @@ static int crypt_ctr_optional(struct dm_target *ti, unsigned int argc, char **ar
+ }
+ }
+
++#ifdef CONFIG_ZEN_INTERACTIVE
++ set_bit(DM_CRYPT_NO_READ_WORKQUEUE, &cc->flags);
++ set_bit(DM_CRYPT_NO_WRITE_WORKQUEUE, &cc->flags);
++#endif
++
+ return 0;
+ }
+
+diff --git a/init/Kconfig b/init/Kconfig
+index ecfe83ad567b94696de585082cdea4168fef2db4..dd6432fbec07c238154830db9aa76c9d514ddcee 100644
+--- a/init/Kconfig
++++ b/init/Kconfig
+@@ -120,6 +120,7 @@ config ZEN_INTERACTIVE
+ --- Block Layer ----------------------------------------
+
+ Default scheduler.........: mq-deadline -> bfq
++ DM-Crypt Workqueues.......: on -> off
+
+ --- Virtual Memory Subsystem ---------------------------
+