summaryrefslogtreecommitdiffstats
path: root/mm/page_alloc.c
diff options
context:
space:
mode:
Diffstat (limited to 'mm/page_alloc.c')
-rw-r--r--mm/page_alloc.c94
1 files changed, 76 insertions, 18 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index f32fae3121f0..f024b9b3a2a6 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -2929,6 +2929,18 @@ void __init free_bootmem_with_active_regions(int nid,
}
}
+void __init work_with_active_regions(int nid, work_fn_t work_fn, void *data)
+{
+ int i;
+ int ret;
+
+ for_each_active_range_index_in_nid(i, nid) {
+ ret = work_fn(early_node_map[i].start_pfn,
+ early_node_map[i].end_pfn, data);
+ if (ret)
+ break;
+ }
+}
/**
* 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.
@@ -3461,6 +3473,11 @@ void __paginginit free_area_init_node(int nid, struct pglist_data *pgdat,
calculate_node_totalpages(pgdat, zones_size, zholes_size);
alloc_node_mem_map(pgdat);
+#ifdef CONFIG_FLAT_NODE_MEM_MAP
+ printk(KERN_DEBUG "free_area_init_node: node %d, pgdat %08lx, node_mem_map %08lx\n",
+ nid, (unsigned long)pgdat,
+ (unsigned long)pgdat->node_mem_map);
+#endif
free_area_init_core(pgdat, zones_size, zholes_size);
}
@@ -3503,7 +3520,7 @@ void __init add_active_range(unsigned int nid, unsigned long start_pfn,
{
int i;
- printk(KERN_DEBUG "Entering add_active_range(%d, %lu, %lu) "
+ printk(KERN_DEBUG "Entering add_active_range(%d, %#lx, %#lx) "
"%d entries of %d used\n",
nid, start_pfn, end_pfn,
nr_nodemap_entries, MAX_ACTIVE_REGIONS);
@@ -3547,27 +3564,68 @@ 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
- * @old_end_pfn: The old end PFN of the range
- * @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 at the end physical page range that has already been
- * registered with add_active_range(). This function allows an arch to shrink
- * an existing registered range.
+ * 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 old_end_pfn,
- unsigned long new_end_pfn)
+void __init remove_active_range(unsigned int nid, unsigned long start_pfn,
+ unsigned long end_pfn)
{
- int i;
+ 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].end_pfn == old_end_pfn) {
- early_node_map[i].end_pfn = new_end_pfn;
- break;
+ for_each_active_range_index_in_nid(i, nid) {
+ 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].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;
+ }
+ }
+
+ if (!removed)
+ return;
+
+ /* remove the blank ones */
+ for (i = nr_nodemap_entries - 1; i > 0; i--) {
+ if (early_node_map[i].nid != nid)
+ continue;
+ if (early_node_map[i].end_pfn)
+ continue;
+ /* we found it, get rid of it */
+ for (j = i; j < nr_nodemap_entries - 1; j++)
+ memcpy(&early_node_map[j], &early_node_map[j+1],
+ sizeof(early_node_map[j]));
+ j = nr_nodemap_entries - 1;
+ memset(&early_node_map[j], 0, sizeof(early_node_map[j]));
+ nr_nodemap_entries--;
+ }
}
/**
@@ -3611,7 +3669,7 @@ static void __init sort_node_map(void)
}
/* Find the lowest pfn for a node */
-unsigned long __init find_min_pfn_for_node(unsigned long nid)
+unsigned long __init find_min_pfn_for_node(int nid)
{
int i;
unsigned long min_pfn = ULONG_MAX;
@@ -3622,7 +3680,7 @@ unsigned long __init find_min_pfn_for_node(unsigned long nid)
if (min_pfn == ULONG_MAX) {
printk(KERN_WARNING
- "Could not find start_pfn for node %lu\n", nid);
+ "Could not find start_pfn for node %d\n", nid);
return 0;
}
@@ -3878,7 +3936,7 @@ void __init free_area_init_nodes(unsigned long *max_zone_pfn)
for (i = 0; i < MAX_NR_ZONES; i++) {
if (i == ZONE_MOVABLE)
continue;
- printk(" %-8s %8lu -> %8lu\n",
+ printk(" %-8s %0#10lx -> %0#10lx\n",
zone_names[i],
arch_zone_lowest_possible_pfn[i],
arch_zone_highest_possible_pfn[i]);
@@ -3894,7 +3952,7 @@ void __init free_area_init_nodes(unsigned long *max_zone_pfn)
/* Print out the early_node_map[] */
printk("early_node_map[%d] active PFN ranges\n", nr_nodemap_entries);
for (i = 0; i < nr_nodemap_entries; i++)
- printk(" %3d: %8lu -> %8lu\n", early_node_map[i].nid,
+ printk(" %3d: %0#10lx -> %0#10lx\n", early_node_map[i].nid,
early_node_map[i].start_pfn,
early_node_map[i].end_pfn);