path: root/mm/bootmem.c
diff options
authorYinghai Lu <>2010-08-25 13:39:17 -0700
committerH. Peter Anvin <>2010-08-27 11:12:29 -0700
commit72d7c3b33c980843e756681fb4867dc1efd62a76 (patch)
tree9607345d9fa055dd501aacf0772258fb72897035 /mm/bootmem.c
parent301ff3e88ef9ff4bdb92f36a3e6170fce4c9dd34 (diff)
x86: Use memblock to replace early_res
1. replace find_e820_area with memblock_find_in_range 2. replace reserve_early with memblock_x86_reserve_range 3. replace free_early with memblock_x86_free_range. 4. NO_BOOTMEM will switch to use memblock too. 5. use _e820, _early wrap in the patch, in following patch, will replace them all 6. because memblock_x86_free_range support partial free, we can remove some special care 7. Need to make sure that memblock_find_in_range() is called after memblock_x86_fill() so adjust some calling later in setup.c::setup_arch() -- corruption_check and mptable_update -v2: Move reserve_brk() early Before fill_memblock_area, to avoid overlap between brk and memblock_find_in_range() that could happen We have more then 128 RAM entry in E820 tables, and memblock_x86_fill() could use memblock_find_in_range() to find a new place for memblock.memory.region array. and We don't need to use extend_brk() after fill_memblock_area() So move reserve_brk() early before fill_memblock_area(). -v3: Move find_smp_config early To make sure memblock_find_in_range not find wrong place, if BIOS doesn't put mptable in right place. -v4: Treat RESERVED_KERN as RAM in memblock.memory. and they are already in memblock.reserved already.. use __NOT_KEEP_MEMBLOCK to make sure memblock related code could be freed later. -v5: Generic version __memblock_find_in_range() is going from high to low, and for 32bit active_region for 32bit does include high pages need to replace the limit with memblock.default_alloc_limit, aka get_max_mapped() -v6: Use current_limit instead -v7: check with MEMBLOCK_ERROR instead of -1ULL or -1L -v8: Set memblock_can_resize early to handle EFI with more RAM entries -v9: update after kmemleak changes in mainline Suggested-by: David S. Miller <> Suggested-by: Benjamin Herrenschmidt <> Suggested-by: Thomas Gleixner <> Signed-off-by: Yinghai Lu <> Signed-off-by: H. Peter Anvin <>
Diffstat (limited to 'mm/bootmem.c')
1 files changed, 3 insertions, 0 deletions
diff --git a/mm/bootmem.c b/mm/bootmem.c
index bde170dd2fde..fda01a2c31af 100644
--- a/mm/bootmem.c
+++ b/mm/bootmem.c
@@ -15,6 +15,7 @@
#include <linux/module.h>
#include <linux/kmemleak.h>
#include <linux/range.h>
+#include <linux/memblock.h>
#include <asm/bug.h>
#include <asm/io.h>
@@ -434,6 +435,7 @@ void __init free_bootmem_node(pg_data_t *pgdat, unsigned long physaddr,
unsigned long size)
+ kmemleak_free_part(__va(physaddr), size);
free_early(physaddr, physaddr + size);
unsigned long start, end;
@@ -459,6 +461,7 @@ void __init free_bootmem_node(pg_data_t *pgdat, unsigned long physaddr,
void __init free_bootmem(unsigned long addr, unsigned long size)
+ kmemleak_free_part(__va(addr), size);
free_early(addr, addr + size);
unsigned long start, end;