diff options
| author | Badari Pulavarty <pbadari@us.ibm.com> | 2008-10-18 20:25:58 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-20 08:50:25 -0700 |
| commit | 71088785c6bc68fddb450063d57b1bd1c78e0ea1 (patch) | |
| tree | 026e0e2be8aac85959424211f7e319be6cac40ca /mm | |
| parent | 8433ac61acf733dc4b427de5f0891518c21538f9 (diff) | |
mm: cleanup to make remove_memory() arch-neutral
There is nothing architecture specific about remove_memory().
remove_memory() function is common for all architectures which support
hotplug memory remove. Instead of duplicating it in every architecture,
collapse them into arch neutral function.
[akpm@linux-foundation.org: fix the export]
Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com>
Cc: Yasunori Goto <y-goto@jp.fujitsu.com>
Cc: Gary Hade <garyhade@us.ibm.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Yasunori Goto <y-goto@jp.fujitsu.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.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 | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index 89fee2dcb03..c299d083d8e 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -26,6 +26,7 @@ #include <linux/delay.h> #include <linux/migrate.h> #include <linux/page-isolation.h> +#include <linux/pfn.h> #include <asm/tlbflush.h> @@ -849,10 +850,19 @@ failed_removal: return ret; } + +int remove_memory(u64 start, u64 size) +{ + unsigned long start_pfn, end_pfn; + + start_pfn = PFN_DOWN(start); + end_pfn = start_pfn + PFN_DOWN(size); + return offline_pages(start_pfn, end_pfn, 120 * HZ); +} #else int remove_memory(u64 start, u64 size) { return -EINVAL; } -EXPORT_SYMBOL_GPL(remove_memory); #endif /* CONFIG_MEMORY_HOTREMOVE */ +EXPORT_SYMBOL_GPL(remove_memory); |