path: root/Documentation
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authorCatalin Marinas <>2009-06-25 10:16:11 +0100
committerCatalin Marinas <>2009-06-25 10:16:13 +0100
commita9d9058abab4ac17b79d500506e6c74bd16cecdc (patch)
tree3b12a8f093431979b3e26e04f115b4ce942ce363 /Documentation
parent28d0325ce6e0a52f53d8af687e6427fee59004d3 (diff)
kmemleak: Allow the early log buffer to be configurable.
(feature suggested by Sergey Senozhatsky) Kmemleak needs to track all the memory allocations but some of these happen before kmemleak is initialised. These are stored in an internal buffer which may be exceeded in some kernel configurations. This patch adds a configuration option with a default value of 400 and also removes the stack dump when the early log buffer is exceeded. Signed-off-by: Catalin Marinas <> Acked-by: Sergey Senozhatsky <>
Diffstat (limited to 'Documentation')
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/kmemleak.txt b/Documentation/kmemleak.txt
index 0112da3b9ab8..f655308064d7 100644
--- a/Documentation/kmemleak.txt
+++ b/Documentation/kmemleak.txt
@@ -41,6 +41,10 @@ Memory scanning parameters can be modified at run-time by writing to the
Kmemleak can also be disabled at boot-time by passing "kmemleak=off" on
the kernel command line.
+Memory may be allocated or freed before kmemleak is initialised and
+these actions are stored in an early log buffer. The size of this buffer
+is configured via the CONFIG_DEBUG_KMEMLEAK_EARLY_LOG_SIZE option.
Basic Algorithm