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authorCatalin Marinas <catalin.marinas@arm.com>2009-07-07 05:33:01 -0400
committerCatalin Marinas <catalin.marinas@arm.com>2009-07-08 09:25:14 -0400
commitec3a354bd46cbdaa7933ba57a142ee2d2dbde0e5 (patch)
tree7ca4fc5d3ade825a73d9d0d1eb5f0b5e5cccb26d /mm
parent53238a60dd4a679f6fe5613a7ed46899587205cf (diff)
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: 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>
Diffstat (limited to 'mm')
-rw-r--r--mm/bootmem.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/mm/bootmem.c b/mm/bootmem.c
index d2a9ce952768..701740c9e81b 100644
--- a/mm/bootmem.c
+++ b/mm/bootmem.c
@@ -12,6 +12,7 @@
12#include <linux/pfn.h> 12#include <linux/pfn.h>
13#include <linux/bootmem.h> 13#include <linux/bootmem.h>
14#include <linux/module.h> 14#include <linux/module.h>
15#include <linux/kmemleak.h>
15 16
16#include <asm/bug.h> 17#include <asm/bug.h>
17#include <asm/io.h> 18#include <asm/io.h>
@@ -335,6 +336,8 @@ void __init free_bootmem_node(pg_data_t *pgdat, unsigned long physaddr,
335{ 336{
336 unsigned long start, end; 337 unsigned long start, end;
337 338
339 kmemleak_free_part(__va(physaddr), size);
340
338 start = PFN_UP(physaddr); 341 start = PFN_UP(physaddr);
339 end = PFN_DOWN(physaddr + size); 342 end = PFN_DOWN(physaddr + size);
340 343
@@ -354,6 +357,8 @@ void __init free_bootmem(unsigned long addr, unsigned long size)
354{ 357{
355 unsigned long start, end; 358 unsigned long start, end;
356 359
360 kmemleak_free_part(__va(addr), size);
361
357 start = PFN_UP(addr); 362 start = PFN_UP(addr);
358 end = PFN_DOWN(addr + size); 363 end = PFN_DOWN(addr + size);
359 364
@@ -516,6 +521,7 @@ find_block:
516 region = phys_to_virt(PFN_PHYS(bdata->node_min_pfn) + 521 region = phys_to_virt(PFN_PHYS(bdata->node_min_pfn) +
517 start_off); 522 start_off);
518 memset(region, 0, size); 523 memset(region, 0, size);
524 kmemleak_alloc(region, size, 1, 0);
519 return region; 525 return region;
520 } 526 }
521 527