From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
To: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: LKML <linux-kernel@vger.kernel.org>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
Andrew Morton <akpm@linux-foundation.org>,
Christoph Lameter <clameter@sgi.com>,
mel@csn.ul.ie
Subject: [PATCH] memory unplug v7 [6/6] - ia64 interface
Date: Fri, 6 Jul 2007 18:28:06 +0900 [thread overview]
Message-ID: <20070706182806.11b251b0.kamezawa.hiroyu@jp.fujitsu.com> (raw)
In-Reply-To: <20070706181903.428c3713.kamezawa.hiroyu@jp.fujitsu.com>
IA64 memory unplug interface.
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
---
arch/ia64/mm/init.c | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
Index: linux-2.6.22-rc6-mm1/arch/ia64/mm/init.c
===================================================================
--- linux-2.6.22-rc6-mm1.orig/arch/ia64/mm/init.c
+++ linux-2.6.22-rc6-mm1/arch/ia64/mm/init.c
@@ -724,7 +724,17 @@ int arch_add_memory(int nid, u64 start,
int remove_memory(u64 start, u64 size)
{
- return -EINVAL;
+ unsigned long start_pfn, end_pfn;
+ unsigned long timeout = 120 * HZ;
+ int ret;
+ start_pfn = start >> PAGE_SHIFT;
+ end_pfn = start_pfn + (size >> PAGE_SHIFT);
+ ret = offline_pages(start_pfn, end_pfn, timeout);
+ if (ret)
+ goto out;
+ /* we can free mem_map at this point */
+out:
+ return ret;
}
EXPORT_SYMBOL_GPL(remove_memory);
#endif
--
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next prev parent reply other threads:[~2007-07-06 9:28 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-07-06 9:19 [PATCH] memory unplug v7 - introduction KAMEZAWA Hiroyuki
2007-07-06 9:23 ` [PATCH] memory unplug v7 - migration by kernel KAMEZAWA Hiroyuki
2007-07-06 18:11 ` Christoph Lameter
2007-07-06 9:24 ` [PATCH] memory unplug v7 [2/6] - isolate_lru_page fix KAMEZAWA Hiroyuki
2007-07-06 18:11 ` Christoph Lameter
2007-07-06 9:25 ` [PATCH] memory unplug v7 [3/6] memory hotplug cleanup KAMEZAWA Hiroyuki
2007-07-06 9:26 ` [PATCH] memory unplug v7 [4/6] - page isolation KAMEZAWA Hiroyuki
2007-07-06 22:28 ` Andrew Morton
2007-07-06 22:31 ` KAMEZAWA Hiroyuki
2007-07-06 9:27 ` [PATCH] memory unplug v7 [5/6] - page offline KAMEZAWA Hiroyuki
2007-07-06 9:28 ` KAMEZAWA Hiroyuki [this message]
2007-07-06 22:34 ` [PATCH] memory unplug v7 - introduction Andrew Morton
2007-07-06 22:40 ` Christoph Lameter
2007-07-06 22:44 ` KAMEZAWA Hiroyuki
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