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From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Tue, 2 Mar 2021 18:58:04 +0100
Subject: [PATCH] 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(-)
--- 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"
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