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| author |   David Hildenbrand <david@redhat.com> | 2019-10-31 15:29:29 +0100 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2019-11-13 16:58:01 +1100 |
| commit | fe030c9b85e6783bc52fe86449c0a4b8aa16c753 (patch) | |
| tree | eb37fdad2bb18aed40413f1da902d510220cd4d6 /arch/powerpc/platforms/pseries/Kconfig | |
| parent | powerpc/pseries/cmm: Convert loaned_pages to an atomic_long_t (diff) | |
| download | linux-dev-fe030c9b85e6783bc52fe86449c0a4b8aa16c753.tar.xz linux-dev-fe030c9b85e6783bc52fe86449c0a4b8aa16c753.zip | |
powerpc/pseries/cmm: Implement balloon compaction
We can now get rid of the cmm_lock and completely rely on the balloon
compaction internals, which now also manage the page list and the
lock.
Inflated/"loaned" pages are now movable. Memory blocks that contain
such pages can get offlined. Also, all such pages will be marked
PageOffline() and can therefore be excluded in memory dumps using
recent versions of makedumpfile.
Don't switch to balloon_page_alloc() yet (due to the GFP_NOIO). Will
do that separately to discuss this change in detail.
Signed-off-by: David Hildenbrand <david@redhat.com>
[mpe: Add isolated_pages-- in cmm_migratepage() as suggested by David]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20191031142933.10779-9-david@redhat.com
Diffstat (limited to 'arch/powerpc/platforms/pseries/Kconfig')
| -rw-r--r-- | arch/powerpc/platforms/pseries/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/pseries/Kconfig b/arch/powerpc/platforms/pseries/Kconfig index 9e35cddddf73..595e9f8a6539 100644 --- a/arch/powerpc/platforms/pseries/Kconfig +++ b/arch/powerpc/platforms/pseries/Kconfig @@ -108,6 +108,7 @@ config PPC_SMLPAR config CMM tristate "Collaborative memory management" depends on PPC_SMLPAR + select MEMORY_BALLOON default y help Select this option, if you want to enable the kernel interface |