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| author | Konstantin Khlebnikov <k.khlebnikov@samsung.com> | 2014-10-10 02:29:32 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-10-10 06:26:01 +0400 |
| commit | 09316c09dde33aae14f34489d9e3d243ec0d5938 (patch) | |
| tree | 3238cf34be33d587a93db64a9f934f8b1c69cfb8 /mm/Kconfig | |
| parent | 9d1ba8056474a208ed9efb7e58cd014795d9f818 (diff) | |
| download | linux-09316c09dde33aae14f34489d9e3d243ec0d5938.tar.xz | |
mm/balloon_compaction: add vmstat counters and kpageflags bit
Always mark pages with PageBalloon even if balloon compaction is disabled
and expose this mark in /proc/kpageflags as KPF_BALLOON.
Also this patch adds three counters into /proc/vmstat: "balloon_inflate",
"balloon_deflate" and "balloon_migrate". They accumulate balloon
activity. Current size of balloon is (balloon_inflate - balloon_deflate)
pages.
All generic balloon code now gathered under option CONFIG_MEMORY_BALLOON.
It should be selected by ballooning driver which wants use this feature.
Currently virtio-balloon is the only user.
Signed-off-by: Konstantin Khlebnikov <k.khlebnikov@samsung.com>
Cc: Rafael Aquini <aquini@redhat.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/Kconfig')
| -rw-r--r-- | mm/Kconfig | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/mm/Kconfig b/mm/Kconfig index 0ceb8a567dab..1d1ae6b078fd 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -231,11 +231,16 @@ config ARCH_ENABLE_SPLIT_PMD_PTLOCK boolean # +# support for memory balloon +config MEMORY_BALLOON + boolean + +# # support for memory balloon compaction config BALLOON_COMPACTION bool "Allow for balloon memory compaction/migration" def_bool y - depends on COMPACTION && VIRTIO_BALLOON + depends on COMPACTION && MEMORY_BALLOON help Memory fragmentation introduced by ballooning might reduce significantly the number of 2MB contiguous memory blocks that can be |