From 4469fdfc3aa3149228f15759d9ff6da55a64243b Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Sun, 25 Jul 2021 21:35:46 +0200 Subject: [PATCH 098/166] mm/memcontrol: Disable on PREEMPT_RT 559271146efc ("mm/memcg: optimize user context object stock access") is a classic example of optimizing for the cpu local BKL serialization without a clear protection scope. Disable MEMCG on RT for now. Signed-off-by: Thomas Gleixner --- init/Kconfig | 1 + 1 file changed, 1 insertion(+) Index: linux-5.15.32-rt39/init/Kconfig =================================================================== --- linux-5.15.32-rt39.orig/init/Kconfig +++ linux-5.15.32-rt39/init/Kconfig @@ -943,6 +943,7 @@ config PAGE_COUNTER config MEMCG bool "Memory controller" + depends on !PREEMPT_RT select PAGE_COUNTER select EVENTFD help