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kmemleak: Add callbacks to the bootmem allocator

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This patch adds kmemleak_alloc/free callbacks to the bootmem allocator.
This would allow scanning of such blocks and help avoiding a whole class
of false positives and more kmemleak annotations.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Ingo Molnar <mingo@elte.hu>
Acked-by: Pekka Enberg <penberg@cs.helsinki.fi>
Reviewed-by: Johannes Weiner <hannes@cmpxchg.org>
This commit is contained in:
Catalin Marinas 2009-07-07 10:33:01 +01:00
parent 53238a60dd
commit ec3a354bd4
1 changed files with 6 additions and 0 deletions
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6
mm/bootmem.c
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@ -12,6 +12,7 @@
#include <linux/pfn.h> #include <linux/pfn.h>
#include <linux/bootmem.h> #include <linux/bootmem.h>
#include <linux/module.h> #include <linux/module.h>
#include <linux/kmemleak.h>
#include <asm/bug.h> #include <asm/bug.h>
#include <asm/io.h> #include <asm/io.h>
@ -335,6 +336,8 @@ void __init free_bootmem_node(pg_data_t *pgdat, unsigned long physaddr,
{ {
unsigned long start, end; unsigned long start, end;
kmemleak_free_part(__va(physaddr), size);
start = PFN_UP(physaddr); start = PFN_UP(physaddr);
end = PFN_DOWN(physaddr + size); end = PFN_DOWN(physaddr + size);
@ -354,6 +357,8 @@ void __init free_bootmem(unsigned long addr, unsigned long size)
{ {
unsigned long start, end; unsigned long start, end;
kmemleak_free_part(__va(addr), size);
start = PFN_UP(addr); start = PFN_UP(addr);
end = PFN_DOWN(addr + size); end = PFN_DOWN(addr + size);
@ -516,6 +521,7 @@ find_block:
region = phys_to_virt(PFN_PHYS(bdata->node_min_pfn) + region = phys_to_virt(PFN_PHYS(bdata->node_min_pfn) +
start_off); start_off);
memset(region, 0, size); memset(region, 0, size);
kmemleak_alloc(region, size, 1, 0);
return region; return region;
} }