diff options
Diffstat (limited to 'mm/Kconfig')
| -rw-r--r-- | mm/Kconfig | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/mm/Kconfig b/mm/Kconfig index a3f8dddaaab..71259e052ce 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -143,6 +143,14 @@ config NO_BOOTMEM config MEMORY_ISOLATION boolean +config MOVABLE_NODE + boolean "Enable to assign a node which has only movable memory" + depends on HAVE_MEMBLOCK + depends on NO_BOOTMEM + depends on X86_64 + depends on NUMA + depends on BROKEN + # eventually, we can have this option just 'select SPARSEMEM' config MEMORY_HOTPLUG bool "Allow for memory hot-add" @@ -188,6 +196,21 @@ config SPLIT_PTLOCK_CPUS default "4" # +# support for memory balloon compaction +config BALLOON_COMPACTION + bool "Allow for balloon memory compaction/migration" + def_bool y + depends on COMPACTION && VIRTIO_BALLOON + help + Memory fragmentation introduced by ballooning might reduce + significantly the number of 2MB contiguous memory blocks that can be + used within a guest, thus imposing performance penalties associated + with the reduced number of transparent huge pages that could be used + by the guest workload. Allowing the compaction & migration for memory + pages enlisted as being part of memory balloon devices avoids the + scenario aforementioned and helps improving memory defragmentation. + +# # support for memory compaction config COMPACTION bool "Allow for memory compaction" |