summaryrefslogtreecommitdiffstats
path: root/mm/bootmem.c
diff options
context:
space:
mode:
Diffstat (limited to 'mm/bootmem.c')
-rw-r--r--mm/bootmem.c60
1 files changed, 37 insertions, 23 deletions
diff --git a/mm/bootmem.c b/mm/bootmem.c
index e8c5671..35c3229 100644
--- a/mm/bootmem.c
+++ b/mm/bootmem.c
@@ -204,6 +204,8 @@ restart_scan:
unsigned long j;
i = find_next_zero_bit(bdata->node_bootmem_map, eidx, i);
i = ALIGN(i, incr);
+ if (i >= eidx)
+ break;
if (test_bit(i, bdata->node_bootmem_map))
continue;
for (j = i + 1; j < i + areasize; ++j) {
@@ -294,20 +296,12 @@ static unsigned long __init free_all_bootmem_core(pg_data_t *pgdat)
unsigned long v = ~map[i / BITS_PER_LONG];
if (gofast && v == ~0UL) {
- int j, order;
+ int order;
page = pfn_to_page(pfn);
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);
- set_page_count(page + j, 0);
- }
- __free_pages(page, order);
+ __free_pages_bootmem(page, order);
i += BITS_PER_LONG;
page += BITS_PER_LONG;
} else if (v) {
@@ -317,9 +311,7 @@ static unsigned long __init free_all_bootmem_core(pg_data_t *pgdat)
for (m = 1; m && i < idx; m<<=1, page++, i++) {
if (v & m) {
count++;
- __ClearPageReserved(page);
- set_page_refs(page, 0);
- __free_page(page);
+ __free_pages_bootmem(page, 0);
}
}
} else {
@@ -337,9 +329,7 @@ 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);
- set_page_count(page, 1);
- __free_page(page);
+ __free_pages_bootmem(page, 0);
}
total += count;
bdata->node_bootmem_map = NULL;
@@ -391,15 +381,14 @@ unsigned long __init free_all_bootmem (void)
return(free_all_bootmem_core(NODE_DATA(0)));
}
-void * __init __alloc_bootmem_limit (unsigned long size, unsigned long align, unsigned long goal,
- unsigned long limit)
+void * __init __alloc_bootmem(unsigned long size, unsigned long align, unsigned long goal)
{
pg_data_t *pgdat = pgdat_list;
void *ptr;
for_each_pgdat(pgdat)
if ((ptr = __alloc_bootmem_core(pgdat->bdata, size,
- align, goal, limit)))
+ align, goal, 0)))
return(ptr);
/*
@@ -411,15 +400,40 @@ void * __init __alloc_bootmem_limit (unsigned long size, unsigned long align, un
}
-void * __init __alloc_bootmem_node_limit (pg_data_t *pgdat, unsigned long size, unsigned long align,
- unsigned long goal, unsigned long limit)
+void * __init __alloc_bootmem_node(pg_data_t *pgdat, unsigned long size, unsigned long align,
+ unsigned long goal)
{
void *ptr;
- ptr = __alloc_bootmem_core(pgdat->bdata, size, align, goal, limit);
+ ptr = __alloc_bootmem_core(pgdat->bdata, size, align, goal, 0);
if (ptr)
return (ptr);
- return __alloc_bootmem_limit(size, align, goal, limit);
+ return __alloc_bootmem(size, align, goal);
+}
+
+#define LOW32LIMIT 0xffffffff
+
+void * __init __alloc_bootmem_low(unsigned long size, unsigned long align, unsigned long goal)
+{
+ pg_data_t *pgdat = pgdat_list;
+ void *ptr;
+
+ for_each_pgdat(pgdat)
+ if ((ptr = __alloc_bootmem_core(pgdat->bdata, size,
+ align, goal, LOW32LIMIT)))
+ return(ptr);
+
+ /*
+ * Whoops, we cannot satisfy the allocation request.
+ */
+ printk(KERN_ALERT "low bootmem alloc of %lu bytes failed!\n", size);
+ panic("Out of low memory");
+ return NULL;
}
+void * __init __alloc_bootmem_low_node(pg_data_t *pgdat, unsigned long size,
+ unsigned long align, unsigned long goal)
+{
+ return __alloc_bootmem_core(pgdat->bdata, size, align, goal, LOW32LIMIT);
+}
OpenPOWER on IntegriCloud