Subject: + mm-update-the-kmemleak-stack-trace-for-mempool-allocations.patch added to -mm tree
To: catalin.marinas@xxxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Fri, 02 May 2014 15:49:16 -0700
The patch titled
Subject: mm/mempool.c: update the kmemleak stack trace for mempool allocations
has been added to the -mm tree. Its filename is
mm-update-the-kmemleak-stack-trace-for-mempool-allocations.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-update-the-kmemleak-stack-trace-for-mempool-allocations.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-update-the-kmemleak-stack-trace-for-mempool-allocations.patch
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From: Catalin Marinas <catalin.marinas@xxxxxxx>
Subject: mm/mempool.c: update the kmemleak stack trace for mempool allocations
When mempool_alloc() returns an existing pool object, kmemleak_alloc() is
no longer called and the stack trace corresponds to the original object
allocation. This patch updates the kmemleak allocation stack trace for
such objects to make it more useful for debugging.
Signed-off-by: Catalin Marinas <catalin.marinas@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/mempool.c | 6 ++++++
1 file changed, 6 insertions(+)
diff -puN mm/mempool.c~mm-update-the-kmemleak-stack-trace-for-mempool-allocations mm/mempool.c
--- a/mm/mempool.c~mm-update-the-kmemleak-stack-trace-for-mempool-allocations
+++ a/mm/mempool.c
@@ -10,6 +10,7 @@
#include <linux/mm.h>
#include <linux/slab.h>
+#include <linux/kmemleak.h>
#include <linux/export.h>
#include <linux/mempool.h>
#include <linux/blkdev.h>
@@ -222,6 +223,11 @@ repeat_alloc:
spin_unlock_irqrestore(&pool->lock, flags);
/* paired with rmb in mempool_free(), read comment there */
smp_wmb();
+ /*
+ * Update the allocation stack trace as this is more useful
+ * for debugging.
+ */
+ kmemleak_update_trace(element);
return element;
}
_
Patches currently in -mm which might be from catalin.marinas@xxxxxxx are
origin.patch
mm-kmemleakc-use-%u-to-print-checksum.patch
mm-introduce-kmemleak_update_trace.patch
lib-update-the-kmemleak-stack-trace-for-radix-tree-allocations.patch
mm-update-the-kmemleak-stack-trace-for-mempool-allocations.patch
mm-call-kmemleak-directly-from-memblock_allocfree.patch
mm-postpone-the-disabling-of-kmemleak-early-logging.patch
documentation-devicetree-bindings-add-documentation-for-the-apm-x-gene-soc-rtc-dts-binding.patch
drivers-rtc-add-apm-x-gene-soc-rtc-driver.patch
arm64-add-apm-x-gene-soc-rtc-dts-entry.patch
linux-next.patch
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