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authorYinghai Lu <yhlu.kernel@gmail.com>2008-06-13 19:08:52 -0700
committerIngo Molnar <mingo@elte.hu>2008-07-08 10:36:29 +0200
commitcc1050bafebfb1d7935331282e948b5016318192 (patch)
tree7e9e6935ed4a18afb63dedbcd808657c683265f5 /mm/page_alloc.c
parentd2dbf343329dc777d77488743465f7be4245971d (diff)
downloadtalos-obmc-linux-cc1050bafebfb1d7935331282e948b5016318192.tar.gz
talos-obmc-linux-cc1050bafebfb1d7935331282e948b5016318192.zip
x86: replace shrink_active_range() with remove_active_range()
in case we have kva before ramdisk on a node, we still need to use those ranges. v2: reserve_early kva ram area, in case there are holes in highmem, to avoid those area could be treat as free high pages. Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'mm/page_alloc.c')
-rw-r--r--mm/page_alloc.c29
1 files changed, 23 insertions, 6 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index eee5ba7509c1..d80e1868e570 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -3552,30 +3552,47 @@ void __init add_active_range(unsigned int nid, unsigned long start_pfn,
}
/**
- * shrink_active_range - Shrink an existing registered range of PFNs
+ * remove_active_range - Shrink an existing registered range of PFNs
* @nid: The node id the range is on that should be shrunk
- * @new_end_pfn: The new PFN of the range
+ * @start_pfn: The new PFN of the range
+ * @end_pfn: The new PFN of the range
*
* i386 with NUMA use alloc_remap() to store a node_mem_map on a local node.
* The map is kept near the end physical page range that has already been
* registered. This function allows an arch to shrink an existing registered
* range.
*/
-void __init shrink_active_range(unsigned int nid, unsigned long new_end_pfn)
+void __init remove_active_range(unsigned int nid, unsigned long start_pfn,
+ unsigned long end_pfn)
{
int i, j;
int removed = 0;
+ printk(KERN_DEBUG "remove_active_range (%d, %lu, %lu)\n",
+ nid, start_pfn, end_pfn);
+
/* Find the old active region end and shrink */
for_each_active_range_index_in_nid(i, nid) {
- if (early_node_map[i].start_pfn >= new_end_pfn) {
+ if (early_node_map[i].start_pfn >= start_pfn &&
+ early_node_map[i].end_pfn <= end_pfn) {
/* clear it */
+ early_node_map[i].start_pfn = 0;
early_node_map[i].end_pfn = 0;
removed = 1;
continue;
}
- if (early_node_map[i].end_pfn > new_end_pfn) {
- early_node_map[i].end_pfn = new_end_pfn;
+ if (early_node_map[i].start_pfn < start_pfn &&
+ early_node_map[i].end_pfn > start_pfn) {
+ unsigned long temp_end_pfn = early_node_map[i].end_pfn;
+ early_node_map[i].end_pfn = start_pfn;
+ if (temp_end_pfn > end_pfn)
+ add_active_range(nid, end_pfn, temp_end_pfn);
+ continue;
+ }
+ if (early_node_map[i].start_pfn >= start_pfn &&
+ early_node_map[i].end_pfn > end_pfn &&
+ early_node_map[i].start_pfn < end_pfn) {
+ early_node_map[i].start_pfn = end_pfn;
continue;
}
}
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