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Diffstat (limited to 'Documentation/dev-tools')
| -rw-r--r-- | Documentation/dev-tools/kmemleak.rst | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/Documentation/dev-tools/kmemleak.rst b/Documentation/dev-tools/kmemleak.rst index 7d784e03f3f9..d1b690b17169 100644 --- a/Documentation/dev-tools/kmemleak.rst +++ b/Documentation/dev-tools/kmemleak.rst @@ -198,6 +198,16 @@ systems, because of pointers temporarily stored in CPU registers or stacks. Kmemleak defines MSECS_MIN_AGE (defaulting to 1000) representing the minimum age of an object to be reported as a memory leak. +The ``min_unref_scans`` module parameter requires an object to be seen +unreferenced in that many consecutive scans before it is reported. It +defaults to 2 when CONFIG_DEBUG_KMEMLEAK_VERBOSE is enabled, where the +periodic scan thread confirms a leak on its own, and to 1 otherwise. A +value of 1 preserves the historical behaviour; higher values filter the +transient false positives described above, at the cost of delaying genuine +reports by up to that many scans. It can be set at boot with +``kmemleak.min_unref_scans=<n>`` or at run-time via +``/sys/module/kmemleak/parameters/min_unref_scans``. + Limitations and Drawbacks ------------------------- |