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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-07-19 13:18:34 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-07-19 13:18:34 -0700 |
| commit | 46ac0cc92eedf92f7909e563ffcd2dbc4b914bc3 (patch) | |
| tree | 25b9c293e4f9a33b8593f83c86f1db5ddf247ead | |
| parent | 2decd5a7cea2c1dae6418fe778857d43680a91aa (diff) | |
| parent | 9078370c0d2cfe4a905aa34f398bbb0d65921a2b (diff) | |
| download | linux-46ac0cc92eedf92f7909e563ffcd2dbc4b914bc3.tar.gz linux-46ac0cc92eedf92f7909e563ffcd2dbc4b914bc3.tar.bz2 linux-46ac0cc92eedf92f7909e563ffcd2dbc4b914bc3.zip | |
Merge branch 'kmemleak' of git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas/linux-2.6-cm
* 'kmemleak' of git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas/linux-2.6-cm:
kmemleak: Add support for NO_BOOTMEM configurations
kmemleak: Annotate false positive in init_section_page_cgroup()
| -rw-r--r-- | kernel/early_res.c | 6 | ||||
| -rw-r--r-- | mm/page_alloc.c | 5 | ||||
| -rw-r--r-- | mm/page_cgroup.c | 7 |
3 files changed, 18 insertions, 0 deletions
diff --git a/kernel/early_res.c b/kernel/early_res.c index 31aa9332ef3f..7bfae887f211 100644 --- a/kernel/early_res.c +++ b/kernel/early_res.c @@ -7,6 +7,8 @@ #include <linux/bootmem.h> #include <linux/mm.h> #include <linux/early_res.h> +#include <linux/slab.h> +#include <linux/kmemleak.h> /* * Early reserved memory areas. @@ -319,6 +321,8 @@ void __init free_early(u64 start, u64 end) struct early_res *r; int i; + kmemleak_free_part(__va(start), end - start); + i = find_overlapped_early(start, end); r = &early_res[i]; if (i >= max_early_res || r->end != end || r->start != start) @@ -333,6 +337,8 @@ void __init free_early_partial(u64 start, u64 end) struct early_res *r; int i; + kmemleak_free_part(__va(start), end - start); + if (start == end) return; diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 431214b941ac..68319dd20bed 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -3659,6 +3659,11 @@ void * __init __alloc_memory_core_early(int nid, u64 size, u64 align, ptr = phys_to_virt(addr); memset(ptr, 0, size); reserve_early_without_check(addr, addr + size, "BOOTMEM"); + /* + * The min_count is set to 0 so that bootmem allocated blocks + * are never reported as leaks. + */ + kmemleak_alloc(ptr, size, 0, 0); return ptr; } diff --git a/mm/page_cgroup.c b/mm/page_cgroup.c index 6c0081441a32..5bffada7cde1 100644 --- a/mm/page_cgroup.c +++ b/mm/page_cgroup.c @@ -9,6 +9,7 @@ #include <linux/vmalloc.h> #include <linux/cgroup.h> #include <linux/swapops.h> +#include <linux/kmemleak.h> static void __meminit __init_page_cgroup(struct page_cgroup *pc, unsigned long pfn) @@ -126,6 +127,12 @@ static int __init_refok init_section_page_cgroup(unsigned long pfn) if (!base) base = vmalloc(table_size); } + /* + * The value stored in section->page_cgroup is (base - pfn) + * and it does not point to the memory block allocated above, + * causing kmemleak false positives. + */ + kmemleak_not_leak(base); } else { /* * We don't have to allocate page_cgroup again, but |