diff options
Diffstat (limited to 'features/rt/mm-slub-Don-t-enable-partial-CPU-caches-on-PREEMPT_R.patch')
| -rw-r--r-- | features/rt/mm-slub-Don-t-enable-partial-CPU-caches-on-PREEMPT_R.patch | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/features/rt/mm-slub-Don-t-enable-partial-CPU-caches-on-PREEMPT_R.patch b/features/rt/mm-slub-Don-t-enable-partial-CPU-caches-on-PREEMPT_R.patch new file mode 100644 index 00000000..d3c75a7e --- /dev/null +++ b/features/rt/mm-slub-Don-t-enable-partial-CPU-caches-on-PREEMPT_R.patch @@ -0,0 +1,32 @@ +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 + |