feat: add multi-gen LRU kernel support

Adds Multi-Gen LRU support to the kernel but does not enable it by default. MG LRU is one of the most hyped features of 6.1. Options and /sys/kernel control: https://kernel.org/doc/html/v6.1/admin-guide/mm/multigen_lru.html General docs: https://kernel.org/doc/html/v6.1/mm/multigen_lru.html Benchmarks: https://www.phoronix.com/news/MGLRU-July-2022-Performance TLDR presentation slides: https://www.phoronix.com/news/MGLRU-LPC-2022 Signed-off-by: Nico Berlee <[email protected]> Signed-off-by: Andrey Smirnov <[email protected]>
siderolabs · Apr 24, 2023 · 3920b16 · 3920b16
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commit 3920b16
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diff --git a/kernel/build/config-amd64 b/kernel/build/config-amd64
@@ -1009,7 +1009,8 @@ CONFIG_ARCH_HAS_PTE_SPECIAL=y
 CONFIG_SECRETMEM=y
 # CONFIG_ANON_VMA_NAME is not set
 # CONFIG_USERFAULTFD is not set
-# CONFIG_LRU_GEN is not set
+CONFIG_LRU_GEN=y
+# CONFIG_LRU_GEN_ENABLED is not set
 
 #
 # Data Access Monitoring

diff --git a/kernel/build/config-arm64 b/kernel/build/config-arm64
@@ -1055,7 +1055,8 @@ CONFIG_VM_EVENT_COUNTERS=y
 CONFIG_ARCH_HAS_PTE_SPECIAL=y
 # CONFIG_ANON_VMA_NAME is not set
 # CONFIG_USERFAULTFD is not set
-# CONFIG_LRU_GEN is not set
+CONFIG_LRU_GEN=y
+# CONFIG_LRU_GEN_ENABLED is not set
 
 #
 # Data Access Monitoring