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From b49dbaa0391f05adefc6384ea61cb9e60c4a452a Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Tue, 2 Mar 2021 18:58:04 +0100
Subject: [PATCH 112/191] mm: slub: Don't enable partial CPU caches on
PREEMPT_RT by default
SLUB's partial CPU caches lead to higher latencies in a hackbench
benchmark.
Don't enable partial CPU caches by default on PREEMPT_RT.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
init/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/init/Kconfig b/init/Kconfig
index 37686a22a769..45f2231c7131 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -1974,7 +1974,7 @@ config SHUFFLE_PAGE_ALLOCATOR
Say Y if unsure.
config SLUB_CPU_PARTIAL
- default y
+ default y if !PREEMPT_RT
depends on SLUB && SMP
bool "SLUB per cpu partial cache"
help
--
2.19.1
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