linux-kernel - [PATCH 01/11] x86: get pg_data

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Message-Id: <1365154801-473-2-git-send-email-tangchen@cn.fujitsu.com>
Date:	Fri, 5 Apr 2013 17:39:51 +0800
From:	Tang Chen <tangchen@...fujitsu.com>
To:	rob@...dley.net, tglx@...utronix.de, mingo@...hat.com,
	hpa@...or.com, yinghai@...nel.org, akpm@...ux-foundation.org,
	wency@...fujitsu.com, trenn@...e.de, liwanp@...ux.vnet.ibm.com,
	mgorman@...e.de, walken@...gle.com, riel@...hat.com,
	khlebnikov@...nvz.org, tj@...nel.org, minchan@...nel.org,
	m.szyprowski@...sung.com, mina86@...a86.com, laijs@...fujitsu.com,
	isimatu.yasuaki@...fujitsu.com, linfeng@...fujitsu.com,
	kosaki.motohiro@...fujitsu.com, jiang.liu@...wei.com,
	guz.fnst@...fujitsu.com
Cc:	x86@...nel.org, linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: [PATCH 01/11] x86: get pg_data_t's memory from other node

From: Yasuaki Ishimatsu <isimatu.yasuaki@...fujitsu.com>

If system can create movable node which all memory of the
node is allocated as ZONE_MOVABLE, setup_node_data() cannot
allocate memory for the node's pg_data_t.
So, use memblock_alloc_try_nid() instead of memblock_alloc_nid()
to retry when the first allocation fails.

Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@...fujitsu.com>
Signed-off-by: Lai Jiangshan <laijs@...fujitsu.com>
Signed-off-by: Tang Chen <tangchen@...fujitsu.com>
Signed-off-by: Jiang Liu <jiang.liu@...wei.com>
---
 arch/x86/mm/numa.c |    5 ++---
 1 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/arch/x86/mm/numa.c b/arch/x86/mm/numa.c
index 11acdf6..4f754e6 100644
--- a/arch/x86/mm/numa.c
+++ b/arch/x86/mm/numa.c
@@ -214,10 +214,9 @@ static void __init setup_node_data(int nid, u64 start, u64 end)
 	 * Allocate node data.  Try node-local memory and then any node.
 	 * Never allocate in DMA zone.
 	 */
-	nd_pa = memblock_alloc_nid(nd_size, SMP_CACHE_BYTES, nid);
+	nd_pa = memblock_alloc_try_nid(nd_size, SMP_CACHE_BYTES, nid);
 	if (!nd_pa) {
-		pr_err("Cannot find %zu bytes in node %d\n",
-		       nd_size, nid);
+		pr_err("Cannot find %zu bytes in any node\n", nd_size);
 		return;
 	}
 	nd = __va(nd_pa);
-- 
1.7.1

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