From 61dd3f246b3adaabff3241c586f2210ac91b05a4 Mon Sep 17 00:00:00 2001 From: Kinsey Ho Date: Wed, 27 Dec 2023 14:12:02 +0000 Subject: mm/mglru: add CONFIG_LRU_GEN_WALKS_MMU Add CONFIG_LRU_GEN_WALKS_MMU such that if disabled, the code that walks page tables to promote pages into the youngest generation will not be built. Also improves code readability by adding two helper functions get_mm_state() and get_next_mm(). Link: https://lkml.kernel.org/r/20231227141205.2200125-3-kinseyho@google.com Signed-off-by: Kinsey Ho Co-developed-by: Aneesh Kumar K.V Signed-off-by: Aneesh Kumar K.V Tested-by: Donet Tom Acked-by: Yu Zhao Cc: kernel test robot Signed-off-by: Andrew Morton --- mm/Kconfig | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'mm/Kconfig') diff --git a/mm/Kconfig b/mm/Kconfig index b072664b889a..79d563d8f9e0 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -1274,6 +1274,10 @@ config LRU_GEN_STATS from evicted generations for debugging purpose. This option has a per-memcg and per-node memory overhead. + +config LRU_GEN_WALKS_MMU + def_bool y + depends on LRU_GEN && ARCH_HAS_HW_PTE_YOUNG # } config ARCH_SUPPORTS_PER_VMA_LOCK -- cgit v1.2.3-58-ga151