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Subject[103/205] kmemleak: Add support for NO_BOOTMEM configurations
2.6.34-stable review patch.  If anyone has any objections, please let us know.

------------------
From: Catalin Marinas <catalin.marinas@arm.com>

commit 9078370c0d2cfe4a905aa34f398bbb0d65921a2b upstream.

With commits 08677214 and 59be5a8e, alloc_bootmem()/free_bootmem() and
friends use the early_res functions for memory management when
NO_BOOTMEM is enabled. This patch adds the kmemleak calls in the
corresponding code paths for bootmem allocations.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Pekka Enberg <penberg@cs.helsinki.fi>
Acked-by: Yinghai Lu <yinghai@kernel.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
kernel/early_res.c | 6 ++++++
mm/page_alloc.c | 5 +++++
2 files changed, 11 insertions(+)
--- 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 en
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
struct early_res *r;
int i;

+ kmemleak_free_part(__va(start), end - start);
+
if (start == end)
return;

--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -3440,6 +3440,11 @@ void * __init __alloc_memory_core_early(
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;
}




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