*/
#include <linux/init.h>
#include <linux/pfn.h>
+#include <linux/slab.h>
#include <linux/bootmem.h>
-#include <linux/module.h>
+#include <linux/export.h>
#include <linux/kmemleak.h>
#include <linux/range.h>
+#include <linux/memblock.h>
#include <asm/bug.h>
#include <asm/io.h>
#include "internal.h"
+#ifndef CONFIG_NEED_MULTIPLE_NODES
+struct pglist_data __refdata contig_page_data = {
+ .bdata = &bootmem_node_data[0]
+};
+EXPORT_SYMBOL(contig_page_data);
+#endif
+
unsigned long max_low_pfn;
unsigned long min_low_pfn;
unsigned long max_pfn;
-#ifdef CONFIG_CRASH_DUMP
-/*
- * If we have booted due to a crash, max_pfn will be a very low value. We need
- * to know the amount of memory that the previous kernel used.
- */
-unsigned long saved_max_pfn;
-#endif
-
-#ifndef CONFIG_NO_BOOTMEM
bootmem_data_t bootmem_node_data[MAX_NUMNODES] __initdata;
static struct list_head bdata_list __initdata = LIST_HEAD_INIT(bdata_list);
static unsigned long __init bootmap_bytes(unsigned long pages)
{
- unsigned long bytes = (pages + 7) / 8;
+ unsigned long bytes = DIV_ROUND_UP(pages, 8);
return ALIGN(bytes, sizeof(long));
}
min_low_pfn = start;
return init_bootmem_core(NODE_DATA(0)->bdata, start, 0, pages);
}
-#endif
+
/*
* free_bootmem_late - free bootmem pages directly to page allocator
* @addr: starting address of the range
}
}
-#ifdef CONFIG_NO_BOOTMEM
-static void __init __free_pages_memory(unsigned long start, unsigned long end)
-{
- int i;
- unsigned long start_aligned, end_aligned;
- int order = ilog2(BITS_PER_LONG);
-
- start_aligned = (start + (BITS_PER_LONG - 1)) & ~(BITS_PER_LONG - 1);
- end_aligned = end & ~(BITS_PER_LONG - 1);
-
- if (end_aligned <= start_aligned) {
- for (i = start; i < end; i++)
- __free_pages_bootmem(pfn_to_page(i), 0);
-
- return;
- }
-
- for (i = start; i < start_aligned; i++)
- __free_pages_bootmem(pfn_to_page(i), 0);
-
- for (i = start_aligned; i < end_aligned; i += BITS_PER_LONG)
- __free_pages_bootmem(pfn_to_page(i), order);
-
- for (i = end_aligned; i < end; i++)
- __free_pages_bootmem(pfn_to_page(i), 0);
-}
-
-unsigned long __init free_all_memory_core_early(int nodeid)
-{
- int i;
- u64 start, end;
- unsigned long count = 0;
- struct range *range = NULL;
- int nr_range;
-
- nr_range = get_free_all_memory_range(&range, nodeid);
-
- for (i = 0; i < nr_range; i++) {
- start = range[i].start;
- end = range[i].end;
- count += end - start;
- __free_pages_memory(start, end);
- }
-
- return count;
-}
-#else
static unsigned long __init free_all_bootmem_core(bootmem_data_t *bdata)
{
- int aligned;
struct page *page;
unsigned long start, end, pages, count = 0;
start = bdata->node_min_pfn;
end = bdata->node_low_pfn;
- /*
- * If the start is aligned to the machines wordsize, we might
- * be able to free pages in bulks of that order.
- */
- aligned = !(start & (BITS_PER_LONG - 1));
-
- bdebug("nid=%td start=%lx end=%lx aligned=%d\n",
- bdata - bootmem_node_data, start, end, aligned);
+ bdebug("nid=%td start=%lx end=%lx\n",
+ bdata - bootmem_node_data, start, end);
while (start < end) {
unsigned long *map, idx, vec;
map = bdata->node_bootmem_map;
idx = start - bdata->node_min_pfn;
vec = ~map[idx / BITS_PER_LONG];
-
- if (aligned && vec == ~0UL && start + BITS_PER_LONG < end) {
+ /*
+ * If we have a properly aligned and fully unreserved
+ * BITS_PER_LONG block of pages in front of us, free
+ * it in one go.
+ */
+ if (IS_ALIGNED(start, BITS_PER_LONG) && vec == ~0UL) {
int order = ilog2(BITS_PER_LONG);
__free_pages_bootmem(pfn_to_page(start), order);
count += BITS_PER_LONG;
+ start += BITS_PER_LONG;
} else {
unsigned long off = 0;
vec >>= 1;
off++;
}
+ start = ALIGN(start + 1, BITS_PER_LONG);
}
- start += BITS_PER_LONG;
}
page = virt_to_page(bdata->node_bootmem_map);
return count;
}
-#endif
/**
* free_all_bootmem_node - release a node's free pages to the buddy allocator
unsigned long __init free_all_bootmem_node(pg_data_t *pgdat)
{
register_page_bootmem_info_node(pgdat);
-#ifdef CONFIG_NO_BOOTMEM
- /* free_all_memory_core_early(MAX_NUMNODES) will be called later */
- return 0;
-#else
return free_all_bootmem_core(pgdat->bdata);
-#endif
}
/**
*/
unsigned long __init free_all_bootmem(void)
{
-#ifdef CONFIG_NO_BOOTMEM
- /*
- * We need to use MAX_NUMNODES instead of NODE_DATA(0)->node_id
- * because in some case like Node0 doesnt have RAM installed
- * low ram will be on Node1
- * Use MAX_NUMNODES will make sure all ranges in early_node_map[]
- * will be used instead of only Node0 related
- */
- return free_all_memory_core_early(MAX_NUMNODES);
-#else
unsigned long total_pages = 0;
bootmem_data_t *bdata;
total_pages += free_all_bootmem_core(bdata);
return total_pages;
-#endif
}
-#ifndef CONFIG_NO_BOOTMEM
static void __init __free(bootmem_data_t *bdata,
unsigned long sidx, unsigned long eidx)
{
}
BUG();
}
-#endif
/**
* free_bootmem_node - mark a page range as usable
void __init free_bootmem_node(pg_data_t *pgdat, unsigned long physaddr,
unsigned long size)
{
-#ifdef CONFIG_NO_BOOTMEM
- free_early(physaddr, physaddr + size);
-#else
unsigned long start, end;
kmemleak_free_part(__va(physaddr), size);
end = PFN_DOWN(physaddr + size);
mark_bootmem_node(pgdat->bdata, start, end, 0, 0);
-#endif
}
/**
*/
void __init free_bootmem(unsigned long addr, unsigned long size)
{
-#ifdef CONFIG_NO_BOOTMEM
- free_early(addr, addr + size);
-#else
unsigned long start, end;
kmemleak_free_part(__va(addr), size);
end = PFN_DOWN(addr + size);
mark_bootmem(start, end, 0, 0);
-#endif
}
/**
int __init reserve_bootmem_node(pg_data_t *pgdat, unsigned long physaddr,
unsigned long size, int flags)
{
-#ifdef CONFIG_NO_BOOTMEM
- panic("no bootmem");
- return 0;
-#else
unsigned long start, end;
start = PFN_DOWN(physaddr);
end = PFN_UP(physaddr + size);
return mark_bootmem_node(pgdat->bdata, start, end, 1, flags);
-#endif
}
/**
int __init reserve_bootmem(unsigned long addr, unsigned long size,
int flags)
{
-#ifdef CONFIG_NO_BOOTMEM
- panic("no bootmem");
- return 0;
-#else
unsigned long start, end;
start = PFN_DOWN(addr);
end = PFN_UP(addr + size);
return mark_bootmem(start, end, 1, flags);
-#endif
}
-#ifndef CONFIG_NO_BOOTMEM
+int __weak __init reserve_bootmem_generic(unsigned long phys, unsigned long len,
+ int flags)
+{
+ return reserve_bootmem(phys, len, flags);
+}
+
static unsigned long __init align_idx(struct bootmem_data *bdata,
unsigned long idx, unsigned long step)
{
#endif
return NULL;
}
-#endif
static void * __init ___alloc_bootmem_nopanic(unsigned long size,
unsigned long align,
unsigned long goal,
unsigned long limit)
{
-#ifdef CONFIG_NO_BOOTMEM
- void *ptr;
-
- if (WARN_ON_ONCE(slab_is_available()))
- return kzalloc(size, GFP_NOWAIT);
-
-restart:
-
- ptr = __alloc_memory_core_early(MAX_NUMNODES, size, align, goal, limit);
-
- if (ptr)
- return ptr;
-
- if (goal != 0) {
- goal = 0;
- goto restart;
- }
-
- return NULL;
-#else
bootmem_data_t *bdata;
void *region;
}
return NULL;
-#endif
}
/**
{
unsigned long limit = 0;
-#ifdef CONFIG_NO_BOOTMEM
- limit = -1UL;
-#endif
-
return ___alloc_bootmem_nopanic(size, align, goal, limit);
}
{
unsigned long limit = 0;
-#ifdef CONFIG_NO_BOOTMEM
- limit = -1UL;
-#endif
-
return ___alloc_bootmem(size, align, goal, limit);
}
-#ifndef CONFIG_NO_BOOTMEM
static void * __init ___alloc_bootmem_node(bootmem_data_t *bdata,
unsigned long size, unsigned long align,
unsigned long goal, unsigned long limit)
return ___alloc_bootmem(size, align, goal, limit);
}
-#endif
/**
* __alloc_bootmem_node - allocate boot memory from a specific node
if (WARN_ON_ONCE(slab_is_available()))
return kzalloc_node(size, GFP_NOWAIT, pgdat->node_id);
-#ifdef CONFIG_NO_BOOTMEM
- return __alloc_memory_core_early(pgdat->node_id, size, align,
- goal, -1ULL);
-#else
- return ___alloc_bootmem_node(pgdat->bdata, size, align, goal, 0);
-#endif
+ return ___alloc_bootmem_node(pgdat->bdata, size, align, goal, 0);
}
void * __init __alloc_bootmem_node_high(pg_data_t *pgdat, unsigned long size,
unsigned long new_goal;
new_goal = MAX_DMA32_PFN << PAGE_SHIFT;
-#ifdef CONFIG_NO_BOOTMEM
- ptr = __alloc_memory_core_early(pgdat->node_id, size, align,
- new_goal, -1ULL);
-#else
ptr = alloc_bootmem_core(pgdat->bdata, size, align,
new_goal, 0);
-#endif
if (ptr)
return ptr;
}
void * __init alloc_bootmem_section(unsigned long size,
unsigned long section_nr)
{
-#ifdef CONFIG_NO_BOOTMEM
- unsigned long pfn, goal, limit;
-
- pfn = section_nr_to_pfn(section_nr);
- goal = pfn << PAGE_SHIFT;
- limit = section_nr_to_pfn(section_nr + 1) << PAGE_SHIFT;
-
- return __alloc_memory_core_early(early_pfn_to_nid(pfn), size,
- SMP_CACHE_BYTES, goal, limit);
-#else
bootmem_data_t *bdata;
- unsigned long pfn, goal, limit;
+ unsigned long pfn, goal;
pfn = section_nr_to_pfn(section_nr);
goal = pfn << PAGE_SHIFT;
- limit = section_nr_to_pfn(section_nr + 1) << PAGE_SHIFT;
bdata = &bootmem_node_data[early_pfn_to_nid(pfn)];
- return alloc_bootmem_core(bdata, size, SMP_CACHE_BYTES, goal, limit);
-#endif
+ return alloc_bootmem_core(bdata, size, SMP_CACHE_BYTES, goal, 0);
}
#endif
if (WARN_ON_ONCE(slab_is_available()))
return kzalloc_node(size, GFP_NOWAIT, pgdat->node_id);
-#ifdef CONFIG_NO_BOOTMEM
- ptr = __alloc_memory_core_early(pgdat->node_id, size, align,
- goal, -1ULL);
-#else
ptr = alloc_arch_preferred_bootmem(pgdat->bdata, size, align, goal, 0);
if (ptr)
return ptr;
ptr = alloc_bootmem_core(pgdat->bdata, size, align, goal, 0);
-#endif
if (ptr)
return ptr;
if (WARN_ON_ONCE(slab_is_available()))
return kzalloc_node(size, GFP_NOWAIT, pgdat->node_id);
-#ifdef CONFIG_NO_BOOTMEM
- return __alloc_memory_core_early(pgdat->node_id, size, align,
- goal, ARCH_LOW_ADDRESS_LIMIT);
-#else
return ___alloc_bootmem_node(pgdat->bdata, size, align,
goal, ARCH_LOW_ADDRESS_LIMIT);
-#endif
}
projects / linux-flexiantxendom0-3.2.10.git / blobdiff