*/
#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
-
bootmem_data_t bootmem_node_data[MAX_NUMNODES] __initdata;
static struct list_head bdata_list __initdata = LIST_HEAD_INIT(bdata_list);
return init_bootmem_core(NODE_DATA(0)->bdata, start, 0, pages);
}
+/*
+ * free_bootmem_late - free bootmem pages directly to page allocator
+ * @addr: starting address of the range
+ * @size: size of the range in bytes
+ *
+ * This is only useful when the bootmem allocator has already been torn
+ * down, but we are still initializing the system. Pages are given directly
+ * to the page allocator, no bootmem metadata is updated because it is gone.
+ */
+void __init free_bootmem_late(unsigned long addr, unsigned long size)
+{
+ unsigned long cursor, end;
+
+ kmemleak_free_part(__va(addr), size);
+
+ cursor = PFN_UP(addr);
+ end = PFN_DOWN(addr + size);
+
+ for (; cursor < end; cursor++) {
+ __free_pages_bootmem(pfn_to_page(cursor), 0);
+ totalram_pages++;
+ }
+}
+
static unsigned long __init free_all_bootmem_core(bootmem_data_t *bdata)
{
int aligned;
*/
unsigned long __init free_all_bootmem(void)
{
- return free_all_bootmem_core(NODE_DATA(0)->bdata);
+ unsigned long total_pages = 0;
+ bootmem_data_t *bdata;
+
+ list_for_each_entry(bdata, &bdata_list, list)
+ total_pages += free_all_bootmem_core(bdata);
+
+ return total_pages;
}
static void __init __free(bootmem_data_t *bdata,
{
unsigned long start, end;
+ kmemleak_free_part(__va(physaddr), size);
+
start = PFN_UP(physaddr);
end = PFN_DOWN(physaddr + size);
{
unsigned long start, end;
+ kmemleak_free_part(__va(addr), size);
+
start = PFN_UP(addr);
end = PFN_DOWN(addr + size);
return mark_bootmem(start, end, 1, flags);
}
-static unsigned long align_idx(struct bootmem_data *bdata, unsigned long idx,
- unsigned long step)
+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)
{
unsigned long base = bdata->node_min_pfn;
return ALIGN(base + idx, step) - base;
}
-static unsigned long align_off(struct bootmem_data *bdata, unsigned long off,
- unsigned long align)
+static unsigned long __init align_off(struct bootmem_data *bdata,
+ unsigned long off, unsigned long align)
{
unsigned long base = PFN_PHYS(bdata->node_min_pfn);
region = phys_to_virt(PFN_PHYS(bdata->node_min_pfn) +
start_off);
memset(region, 0, size);
+ /*
+ * The min_count is set to 0 so that bootmem allocated blocks
+ * are never reported as leaks.
+ */
+ kmemleak_alloc(region, size, 0, 0);
return region;
}
return kzalloc(size, GFP_NOWAIT);
#ifdef CONFIG_HAVE_ARCH_BOOTMEM
- bootmem_data_t *p_bdata;
-
- p_bdata = bootmem_arch_preferred_node(bdata, size, align, goal, limit);
- if (p_bdata)
- return alloc_bootmem_core(p_bdata, size, align, goal, limit);
+ {
+ bootmem_data_t *p_bdata;
+
+ p_bdata = bootmem_arch_preferred_node(bdata, size, align,
+ goal, limit);
+ if (p_bdata)
+ return alloc_bootmem_core(p_bdata, size, align,
+ goal, limit);
+ }
#endif
return NULL;
}
void * __init __alloc_bootmem_nopanic(unsigned long size, unsigned long align,
unsigned long goal)
{
- return ___alloc_bootmem_nopanic(size, align, goal, 0);
+ unsigned long limit = 0;
+
+ return ___alloc_bootmem_nopanic(size, align, goal, limit);
}
static void * __init ___alloc_bootmem(unsigned long size, unsigned long align,
void * __init __alloc_bootmem(unsigned long size, unsigned long align,
unsigned long goal)
{
- return ___alloc_bootmem(size, align, goal, 0);
+ unsigned long limit = 0;
+
+ return ___alloc_bootmem(size, align, goal, limit);
}
static void * __init ___alloc_bootmem_node(bootmem_data_t *bdata,
if (WARN_ON_ONCE(slab_is_available()))
return kzalloc_node(size, GFP_NOWAIT, pgdat->node_id);
- return ___alloc_bootmem_node(pgdat->bdata, size, align, goal, 0);
+ 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 align, unsigned long goal)
+{
+#ifdef MAX_DMA32_PFN
+ unsigned long end_pfn;
+
+ if (WARN_ON_ONCE(slab_is_available()))
+ return kzalloc_node(size, GFP_NOWAIT, pgdat->node_id);
+
+ /* update goal according ...MAX_DMA32_PFN */
+ end_pfn = pgdat->node_start_pfn + pgdat->node_spanned_pages;
+
+ if (end_pfn > MAX_DMA32_PFN + (128 >> (20 - PAGE_SHIFT)) &&
+ (goal >> PAGE_SHIFT) < MAX_DMA32_PFN) {
+ void *ptr;
+ unsigned long new_goal;
+
+ new_goal = MAX_DMA32_PFN << PAGE_SHIFT;
+ ptr = alloc_bootmem_core(pgdat->bdata, size, align,
+ new_goal, 0);
+ if (ptr)
+ return ptr;
+ }
+#endif
+
+ return __alloc_bootmem_node(pgdat, size, align, goal);
+
}
#ifdef CONFIG_SPARSEMEM
unsigned long section_nr)
{
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);
+ return alloc_bootmem_core(bdata, size, SMP_CACHE_BYTES, goal, 0);
}
#endif
projects / linux-flexiantxendom0.git / blobdiff