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| author | KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> | 2007-10-16 01:26:14 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-16 09:43:02 -0700 |
| commit | 48e94196a533dbee17c252bf80d0310fb8c8c2eb (patch) | |
| tree | 9b29060b0e2600dc7da645fd436dc94c25d1fb36 /mm | |
| parent | de33b821f34dc9e2fabf81a8ba464f3ef039bd00 (diff) | |
| download | linux-3.10-48e94196a533dbee17c252bf80d0310fb8c8c2eb.tar.gz linux-3.10-48e94196a533dbee17c252bf80d0310fb8c8c2eb.tar.bz2 linux-3.10-48e94196a533dbee17c252bf80d0310fb8c8c2eb.zip | |
fix memory hot remove not configured case.
Now, arch dependent code around CONFIG_MEMORY_HOTREMOVE is a mess.
This patch cleans up them. This is against 2.6.23-rc6-mm1.
- fix compile failure on ia64/ CONFIG_MEMORY_HOTPLUG && !CONFIG_MEMORY_HOTREMOVE case.
- For !CONFIG_MEMORY_HOTREMOVE, add generic no-op remove_memory(),
which returns -EINVAL.
- removed remove_pages() only used in powerpc.
- removed no-op remove_memory() in i386, sh, sparc64, x86_64.
- only powerpc returns -ENOSYS at memory hot remove(no-op). changes it
to return -EINVAL.
Note:
Currently, only ia64 supports CONFIG_MEMORY_HOTREMOVE. I welcome other
archs if there are requirements and testers.
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/memory_hotplug.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index c4e1b958efd..091b9c6c252 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -555,4 +555,10 @@ failed_removal: undo_isolate_page_range(start_pfn, end_pfn); return ret; } +#else +int remove_memory(u64 start, u64 size) +{ + return -EINVAL; +} +EXPORT_SYMBOL_GPL(remove_memory); #endif /* CONFIG_MEMORY_HOTREMOVE */ |