linux-kernel - [PATCH 1/2] page_alloc.c: kill add_from_early_node

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Date:	Tue, 13 Mar 2012 11:32:00 -0400
From:	Kautuk Consul <consul.kautuk@...il.com>
To:	Andrew Morton <akpm@...ux-foundation.org>,
	Al Viro <viro@...iv.linux.org.uk>,
	Mel Gorman <mgorman@...e.de>,
	David Rientjes <rientjes@...gle.com>,
	Tejun Heo <tj@...nel.org>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Minchan Kim <minchan.kim@...il.com>
Cc:	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	Kautuk Consul <consul.kautuk@...il.com>
Subject: [PATCH 1/2] page_alloc.c: kill add_from_early_node_map

No one seems to be calling add_from_early_node_map anywhere from the
kernel.

Also, deleting this function decreases page_alloc.o file size.

Signed-off-by: Kautuk Consul <consul.kautuk@...il.com>
---
 include/linux/mm.h |    2 --
 mm/page_alloc.c    |   12 ------------
 2 files changed, 0 insertions(+), 14 deletions(-)

diff --git a/include/linux/mm.h b/include/linux/mm.h
index 17b27cd..d8c4339 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1291,8 +1291,6 @@ extern void get_pfn_range_for_nid(unsigned int nid,
 extern unsigned long find_min_pfn_with_active_regions(void);
 extern void free_bootmem_with_active_regions(int nid,
 						unsigned long max_low_pfn);
-int add_from_early_node_map(struct range *range, int az,
-				   int nr_range, int nid);
 extern void sparse_memory_present_with_active_regions(int nid);
 
 #endif /* CONFIG_HAVE_MEMBLOCK_NODE_MAP */
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index a13ded1..3171f4c 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -3925,18 +3925,6 @@ void __init free_bootmem_with_active_regions(int nid, unsigned long max_low_pfn)
 	}
 }
 
-int __init add_from_early_node_map(struct range *range, int az,
-				   int nr_range, int nid)
-{
-	unsigned long start_pfn, end_pfn;
-	int i;
-
-	/* need to go over early_node_map to find out good range for node */
-	for_each_mem_pfn_range(i, nid, &start_pfn, &end_pfn, NULL)
-		nr_range = add_range(range, az, nr_range, start_pfn, end_pfn);
-	return nr_range;
-}
-
 /**
  * sparse_memory_present_with_active_regions - Call memory_present for each active range
  * @nid: The node to call memory_present for. If MAX_NUMNODES, all nodes will be used.
-- 
1.7.5.4

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