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mm/memblock.c: call kmemleak directly from memblock_(alloc|free) 

Kmemleak could ignore memory blocks allocated via memblock_alloc()
leading to false positives during scanning.  This patch adds the
corresponding callbacks and removes kmemleak_free_* calls in
mm/nobootmem.c to avoid duplication.

The kmemleak_alloc() in mm/nobootmem.c is kept since
__alloc_memory_core_early() does not use memblock_alloc() directly.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Catalin Marinas 2014-06-06 14:38:20 -07:00 committed by Linus Torvalds
parent 1741196281
commit aedf95ea05
2 changed files with 8 additions and 4 deletions
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10
mm/memblock.c
View File

@ -691,6 +691,7 @@ int __init_memblock memblock_free(phys_addr_t base, phys_addr_t size)
(unsigned long long)base + size - 1,
(void *)_RET_IP_);
kmemleak_free_part(__va(base), size);
return memblock_remove_range(&memblock.reserved, base, size);
}
@ -1043,9 +1044,14 @@ static phys_addr_t __init memblock_alloc_range_nid(phys_addr_t size,
align = SMP_CACHE_BYTES;
found = memblock_find_in_range_node(size, align, start, end, nid);
if (found && !memblock_reserve(found, size))
if (found && !memblock_reserve(found, size)) {
/*
* The min_count is set to 0 so that memblock allocations are
* never reported as leaks.
*/
kmemleak_alloc(__va(found), size, 0, 0);
return found;
}
return 0;
}

2
mm/nobootmem.c
View File

@ -197,7 +197,6 @@ unsigned long __init free_all_bootmem(void)
void __init free_bootmem_node(pg_data_t *pgdat, unsigned long physaddr,
unsigned long size)
{
kmemleak_free_part(__va(physaddr), size);
memblock_free(physaddr, size);
}
@ -212,7 +211,6 @@ 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);
memblock_free(addr, size);
}