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Commit ec3a354b authored by Catalin Marinas's avatar Catalin Marinas
Browse files

kmemleak: Add callbacks to the bootmem allocator 



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: default avatarCatalin Marinas <catalin.marinas@arm.com>
Cc: Ingo Molnar <mingo@elte.hu>
Acked-by: default avatarPekka Enberg <penberg@cs.helsinki.fi>
Reviewed-by: default avatarJohannes Weiner <hannes@cmpxchg.org>
parent 53238a60

mm/bootmem.c

+6 −0
Original line number Diff line number Diff line
@@ -12,6 +12,7 @@ 
#include <linux/pfn.h>

#include <linux/bootmem.h>

#include <linux/module.h>

#include <linux/kmemleak.h>



#include <asm/bug.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;



	kmemleak_free_part(__va(physaddr), size);



	start = PFN_UP(physaddr);

	end = PFN_DOWN(physaddr + size);
@@ -354,6 +357,8 @@ void __init free_bootmem(unsigned long addr, unsigned long size) 
{

	unsigned long start, end;



	kmemleak_free_part(__va(addr), size);



	start = PFN_UP(addr);

	end = PFN_DOWN(addr + size);
@@ -516,6 +521,7 @@ static void * __init alloc_bootmem_core(struct bootmem_data *bdata, 
		region = phys_to_virt(PFN_PHYS(bdata->node_min_pfn) +

				start_off);

		memset(region, 0, size);

		kmemleak_alloc(region, size, 1, 0);

		return region;

	}