vserver 1.9.5.x5

[linux-2.6.git] / mm / bootmem.c

diff --git a/mm/bootmem.c b/mm/bootmem.c
index 966135b..260e703 100644 (file)
--- a/mm/bootmem.c
+++ b/mm/bootmem.c
@@ -19,6 +19,7 @@
 #include <linux/module.h>
 #include <asm/dma.h>
 #include <asm/io.h>
+#include "internal.h"
 
 /*
  * Access to this subsystem has to be serialized externally. (this is
@@ -259,6 +260,7 @@ static unsigned long __init free_all_bootmem_core(pg_data_t *pgdat)
        unsigned long i, count, total = 0;
        unsigned long idx;
        unsigned long *map; 
+       int gofast = 0;
 
        BUG_ON(!bdata->node_bootmem_map);
 
@@ -267,15 +269,34 @@ static unsigned long __init free_all_bootmem_core(pg_data_t *pgdat)
        page = virt_to_page(phys_to_virt(bdata->node_boot_start));
        idx = bdata->node_low_pfn - (bdata->node_boot_start >> PAGE_SHIFT);
        map = bdata->node_bootmem_map;
+       /* Check physaddr is O(LOG2(BITS_PER_LONG)) page aligned */
+       if (bdata->node_boot_start == 0 ||
+           ffs(bdata->node_boot_start) - PAGE_SHIFT > ffs(BITS_PER_LONG))
+               gofast = 1;
        for (i = 0; i < idx; ) {
                unsigned long v = ~map[i / BITS_PER_LONG];
-               if (v) {
+               if (gofast && v == ~0UL) {
+                       int j, order;
+
+                       count += BITS_PER_LONG;
+                       __ClearPageReserved(page);
+                       order = ffs(BITS_PER_LONG) - 1;
+                       set_page_refs(page, order);
+                       for (j = 1; j < BITS_PER_LONG; j++) {
+                               if (j + 16 < BITS_PER_LONG)
+                                       prefetchw(page + j + 16);
+                               __ClearPageReserved(page + j);
+                       }
+                       __free_pages(page, order);
+                       i += BITS_PER_LONG;
+                       page += BITS_PER_LONG;
+               } else if (v) {
                        unsigned long m;
                        for (m = 1; m && i < idx; m<<=1, page++, i++) {
                                if (v & m) {
                                        count++;
-                                       ClearPageReserved(page);
-                                       set_page_count(page, 1);
+                                       __ClearPageReserved(page);
+                                       set_page_refs(page, 0);
                                        __free_page(page);
                                }
                        }
@@ -294,7 +315,7 @@ static unsigned long __init free_all_bootmem_core(pg_data_t *pgdat)
        count = 0;
        for (i = 0; i < ((bdata->node_low_pfn-(bdata->node_boot_start >> PAGE_SHIFT))/8 + PAGE_SIZE-1)/PAGE_SIZE; i++,page++) {
                count++;
-               ClearPageReserved(page);
+               __ClearPageReserved(page);
                set_page_count(page, 1);
                __free_page(page);
        }
@@ -324,31 +345,29 @@ unsigned long __init free_all_bootmem_node (pg_data_t *pgdat)
        return(free_all_bootmem_core(pgdat));
 }
 
-#ifndef CONFIG_DISCONTIGMEM
 unsigned long __init init_bootmem (unsigned long start, unsigned long pages)
 {
        max_low_pfn = pages;
        min_low_pfn = start;
-       return(init_bootmem_core(&contig_page_data, start, 0, pages));
+       return(init_bootmem_core(NODE_DATA(0), start, 0, pages));
 }
 
 #ifndef CONFIG_HAVE_ARCH_BOOTMEM_NODE
 void __init reserve_bootmem (unsigned long addr, unsigned long size)
 {
-       reserve_bootmem_core(contig_page_data.bdata, addr, size);
+       reserve_bootmem_core(NODE_DATA(0)->bdata, addr, size);
 }
 #endif /* !CONFIG_HAVE_ARCH_BOOTMEM_NODE */
 
 void __init free_bootmem (unsigned long addr, unsigned long size)
 {
-       free_bootmem_core(contig_page_data.bdata, addr, size);
+       free_bootmem_core(NODE_DATA(0)->bdata, addr, size);
 }
 
 unsigned long __init free_all_bootmem (void)
 {
-       return(free_all_bootmem_core(&contig_page_data));
+       return(free_all_bootmem_core(NODE_DATA(0)));
 }
-#endif /* !CONFIG_DISCONTIGMEM */
 
 void * __init __alloc_bootmem (unsigned long size, unsigned long align, unsigned long goal)
 {