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authorCatalin Marinas <catalin.marinas@arm.com>2009-06-11 16:23:19 +0400
committerCatalin Marinas <catalin.marinas@arm.com>2009-06-11 20:03:30 +0400
commitdbb1f81ca67a56c6cfce4c94d07c76378fd4af9e (patch)
treea3a973f1790713fea944b293bb439c7fe84ea1ab /mm
parent89219d37a2377c44fde7bff0bf0623453c05329a (diff)
downloadlinux-dbb1f81ca67a56c6cfce4c94d07c76378fd4af9e.tar.xz
kmemleak: Add kmemleak_alloc callback from alloc_large_system_hash
The alloc_large_system_hash function is called from various places in the kernel and it contains pointers to other allocated structures. It therefore needs to be traced by kmemleak. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'mm')
-rw-r--r--mm/page_alloc.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 474c7e9dd51a..17d5f539a9aa 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -46,6 +46,7 @@
#include <linux/page-isolation.h>
#include <linux/page_cgroup.h>
#include <linux/debugobjects.h>
+#include <linux/kmemleak.h>
#include <asm/tlbflush.h>
#include <asm/div64.h>
@@ -4546,6 +4547,16 @@ void *__init alloc_large_system_hash(const char *tablename,
if (_hash_mask)
*_hash_mask = (1 << log2qty) - 1;
+ /*
+ * If hashdist is set, the table allocation is done with __vmalloc()
+ * which invokes the kmemleak_alloc() callback. This function may also
+ * be called before the slab and kmemleak are initialised when
+ * kmemleak simply buffers the request to be executed later
+ * (GFP_ATOMIC flag ignored in this case).
+ */
+ if (!hashdist)
+ kmemleak_alloc(table, size, 1, GFP_ATOMIC);
+
return table;
}