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authorCatalin Marinas <catalin.marinas@arm.com>2014-06-06 14:38:18 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-06-06 16:08:17 -0700
commitce80b067de8cdb44e161a20fd7b324ad3f557446 (patch)
tree8150a48a821f1cceac55e5325e4c085c692098eb /lib/radix-tree.c
parentffe2c748e283c5dc1b9b9ac116299dbfc11a609b (diff)
downloadlwn-ce80b067de8cdb44e161a20fd7b324ad3f557446.tar.gz
lwn-ce80b067de8cdb44e161a20fd7b324ad3f557446.zip
lib/radix-tree.c: update the kmemleak stack trace for radix tree allocations
Since radix_tree_preload() stack trace is not always useful for debugging an actual radix tree memory leak, this patch updates the kmemleak allocation stack trace in the radix_tree_node_alloc() function. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'lib/radix-tree.c')
-rw-r--r--lib/radix-tree.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/lib/radix-tree.c b/lib/radix-tree.c
index d64815651e90..3291a8e37490 100644
--- a/lib/radix-tree.c
+++ b/lib/radix-tree.c
@@ -27,6 +27,7 @@
#include <linux/radix-tree.h>
#include <linux/percpu.h>
#include <linux/slab.h>
+#include <linux/kmemleak.h>
#include <linux/notifier.h>
#include <linux/cpu.h>
#include <linux/string.h>
@@ -200,6 +201,11 @@ radix_tree_node_alloc(struct radix_tree_root *root)
rtp->nodes[rtp->nr - 1] = NULL;
rtp->nr--;
}
+ /*
+ * Update the allocation stack trace as this is more useful
+ * for debugging.
+ */
+ kmemleak_update_trace(ret);
}
if (ret == NULL)
ret = kmem_cache_alloc(radix_tree_node_cachep, gfp_mask);