1 files changed, 22 insertions, 95 deletions

diff --git a/arch/mips/sgi-ip27/ip27-memory.c b/arch/mips/sgi-ip27/ip27-memory.c
index bf438d02366e..42cd10956306 100644
--- a/arch/mips/sgi-ip27/ip27-memory.c
+++ b/arch/mips/sgi-ip27/ip27-memory.c
@@ -33,10 +33,6 @@
 #define SLOT_PFNSHIFT           (SLOT_SHIFT - PAGE_SHIFT)
 #define PFN_NASIDSHFT           (NASID_SHFT - PAGE_SHIFT)
 
-#define SLOT_IGNORED            0xffff
-
-static short __initdata slot_lastfilled_cache[MAX_COMPACT_NODES];
-static unsigned short __initdata slot_psize_cache[MAX_COMPACT_NODES][MAX_MEM_SLOTS];
 static struct bootmem_data __initdata plat_node_bdata[MAX_COMPACT_NODES];
 
 struct node_data *__node_data[MAX_COMPACT_NODES];
@@ -267,51 +263,6 @@ static pfn_t __init slot_getbasepfn(cnodeid_t cnode, int slot)
         return ((pfn_t)nasid << PFN_NASIDSHFT) | (slot << SLOT_PFNSHIFT);
 }
 
-/*
- * Return the number of pages of memory provided by the given slot
- * on the specified node.
- */
-static pfn_t __init slot_getsize(cnodeid_t node, int slot)
-{
-        return (pfn_t) slot_psize_cache[node][slot];
-}
-
-/*
- * Return highest slot filled
- */
-static int __init node_getlastslot(cnodeid_t node)
-{
-        return (int) slot_lastfilled_cache[node];
-}
-
-/*
- * Return the pfn of the last free page of memory on a node.
- */
-static pfn_t __init node_getmaxclick(cnodeid_t node)
-{
-        pfn_t   slot_psize;
-        int     slot;
-
-        /*
-         * Start at the top slot. When we find a slot with memory in it,
-         * that's the winner.
-         */
-        for (slot = (MAX_MEM_SLOTS - 1); slot >= 0; slot--) {
-                if ((slot_psize = slot_getsize(node, slot))) {
-                        if (slot_psize == SLOT_IGNORED)
-                                continue;
-                        /* Return the basepfn + the slot size, minus 1. */
-                        return slot_getbasepfn(node, slot) + slot_psize - 1;
-                }
-        }
-
-        /*
-         * If there's no memory on the node, return 0. This is likely
-         * to cause problems.
-         */
-        return 0;
-}
-
 static pfn_t __init slot_psize_compute(cnodeid_t node, int slot)
 {
         nasid_t nasid;
@@ -404,13 +355,13 @@ static void __init mlreset(void)
 static void __init szmem(void)
 {
         pfn_t slot_psize, slot0sz = 0, nodebytes;       /* Hack to detect problem configs */
-        int slot, ignore;
+        int slot;
         cnodeid_t node;
 
         num_physpages = 0;
 
         for_each_online_node(node) {
-                ignore = nodebytes = 0;
+                nodebytes = 0;
                 for (slot = 0; slot < MAX_MEM_SLOTS; slot++) {
                         slot_psize = slot_psize_compute(node, slot);
                         if (slot == 0)
@@ -420,21 +371,20 @@ static void __init szmem(void)
                          * kernel text.
                          */
                         nodebytes += (1LL << SLOT_SHIFT);
+
+                        if (!slot_psize)
+                                continue;
+
                         if ((nodebytes >> PAGE_SHIFT) * (sizeof(struct page)) >
-                                                (slot0sz << PAGE_SHIFT))
-                                ignore = 1;
-                        if (ignore && slot_psize) {
+                                                (slot0sz << PAGE_SHIFT)) {
                                 printk("Ignoring slot %d onwards on node %d\n",
                                                                 slot, node);
-                                slot_psize_cache[node][slot] = SLOT_IGNORED;
                                 slot = MAX_MEM_SLOTS;
                                 continue;
                         }
                         num_physpages += slot_psize;
-                        slot_psize_cache[node][slot] =
-                                        (unsigned short) slot_psize;
-                        if (slot_psize)
-                                slot_lastfilled_cache[node] = slot;
+                        add_active_range(node, slot_getbasepfn(node, slot),
+                                         slot_getbasepfn(node, slot) + slot_psize);
                 }
         }
 }
@@ -442,18 +392,20 @@ static void __init szmem(void)
 static void __init node_mem_init(cnodeid_t node)
 {
         pfn_t slot_firstpfn = slot_getbasepfn(node, 0);
-        pfn_t slot_lastpfn = slot_firstpfn + slot_getsize(node, 0);
         pfn_t slot_freepfn = node_getfirstfree(node);
-        struct pglist_data *pd;
         unsigned long bootmap_size;
+        pfn_t start_pfn, end_pfn;
+
+        get_pfn_range_for_nid(node, &start_pfn, &end_pfn);
 
         /*
          * Allocate the node data structures on the node first.
          */
         __node_data[node] = __va(slot_freepfn << PAGE_SHIFT);
 
-        pd = NODE_DATA(node);
-        pd->bdata = &plat_node_bdata[node];
+        NODE_DATA(node)->bdata = &plat_node_bdata[node];
+        NODE_DATA(node)->node_start_pfn = start_pfn;
+        NODE_DATA(node)->node_spanned_pages = end_pfn - start_pfn;
 
         cpus_clear(hub_data(node)->h_cpus);
 
@@ -461,12 +413,12 @@ static void __init node_mem_init(cnodeid_t node)
                                sizeof(struct hub_data));
 
         bootmap_size = init_bootmem_node(NODE_DATA(node), slot_freepfn,
-                                        slot_firstpfn, slot_lastpfn);
-        free_bootmem_node(NODE_DATA(node), slot_firstpfn << PAGE_SHIFT,
-                        (slot_lastpfn - slot_firstpfn) << PAGE_SHIFT);
+                                        start_pfn, end_pfn);
+        free_bootmem_with_active_regions(node, end_pfn);
         reserve_bootmem_node(NODE_DATA(node), slot_firstpfn << PAGE_SHIFT,
                 ((slot_freepfn - slot_firstpfn) << PAGE_SHIFT) + bootmap_size,
                 BOOTMEM_DEFAULT);
+        sparse_memory_present_with_active_regions(node);
 }
 
 /*
@@ -515,16 +467,15 @@ void __init paging_init(void)
         pagetable_init();
 
         for_each_online_node(node) {
-                pfn_t start_pfn = slot_getbasepfn(node, 0);
-                pfn_t end_pfn = node_getmaxclick(node) + 1;
+                pfn_t start_pfn, end_pfn;
 
-                zones_size[ZONE_NORMAL] = end_pfn - start_pfn;
-                free_area_init_node(node, NODE_DATA(node),
-                                zones_size, start_pfn, NULL);
+                get_pfn_range_for_nid(node, &start_pfn, &end_pfn);
 
                 if (end_pfn > max_low_pfn)
                         max_low_pfn = end_pfn;
         }
+        zones_size[ZONE_NORMAL] = max_low_pfn;
+        free_area_init_nodes(zones_size);
 }
 
 void __init mem_init(void)
@@ -535,34 +486,10 @@ void __init mem_init(void)
         high_memory = (void *) __va(num_physpages << PAGE_SHIFT);
 
         for_each_online_node(node) {
-                unsigned slot, numslots;
-                struct page *end, *p;
-
                 /*
                  * This will free up the bootmem, ie, slot 0 memory.
                  */
                 totalram_pages += free_all_bootmem_node(NODE_DATA(node));
-
-                /*
-                 * We need to manually do the other slots.
-                 */
-                numslots = node_getlastslot(node);
-                for (slot = 1; slot <= numslots; slot++) {
-                        p = nid_page_nr(node, slot_getbasepfn(node, slot) -
-                                              slot_getbasepfn(node, 0));
-
-                        /*
-                         * Free valid memory in current slot.
-                         */
-                        for (end = p + slot_getsize(node, slot); p < end; p++) {
-                                /* if (!page_is_ram(pgnr)) continue; */
-                                /* commented out until page_is_ram works */
-                                ClearPageReserved(p);
-                                init_page_count(p);
-                                __free_page(p);
-                                totalram_pages++;
-                        }
-                }
         }
 
         totalram_pages -= setup_zero_pages();   /* This comes from node 0 */