diff options
| author | KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> | 2007-10-16 12:26:12 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-16 20:43:02 +0400 |
| commit | 0c0e6195896535481173df98935ad8db174f4d45 (patch) | |
| tree | 2b35d3b81ba54b5d38e691d2a2019f4bcdfd1dce /arch | |
| parent | a5d76b54a3f3a40385d7f76069a2feac9f1bad63 (diff) | |
| download | linux-0c0e6195896535481173df98935ad8db174f4d45.tar.xz | |
memory unplug: page offline
Logic.
- set all pages in [start,end) as isolated migration-type.
by this, all free pages in the range will be not-for-use.
- Migrate all LRU pages in the range.
- Test all pages in the range's refcnt is zero or not.
Todo:
- allocate migration destination page from better area.
- confirm page_count(page)== 0 && PageReserved(page) page is safe to be freed..
(I don't like this kind of page but..
- Find out pages which cannot be migrated.
- more running tests.
- Use reclaim for unplugging other memory type area.
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Yasunori Goto <y-goto@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/ia64/Kconfig | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig index f80f5e2aec87..59b91ac861ac 100644 --- a/arch/ia64/Kconfig +++ b/arch/ia64/Kconfig @@ -305,6 +305,9 @@ config HOTPLUG_CPU config ARCH_ENABLE_MEMORY_HOTPLUG def_bool y +config ARCH_ENABLE_MEMORY_HOTREMOVE + def_bool y + config SCHED_SMT bool "SMT scheduler support" depends on SMP |