On Wed, 23 May 2007 20:00:52 -0700 (PDT) Christoph Lameter wrote:
> New version with Randy's fixes:
well... :)
> Index: slub/Documentation/kernel-parameters.txt
> ===================================================================
> --- slub.orig/Documentation/kernel-parameters.txt 2007-05-23 19:34:49.000000000 -0700
> +++ slub/Documentation/kernel-parameters.txt 2007-05-23 19:58:04.000000000 -0700
> @@ -1589,6 +1589,37 @@ and is between 256 and 4096 characters.
>
> slram= [HW,MTD]
>
> + slub_debug [MM, SLUB]
> + Enabling slub_debug allows to determine the culprit
allows ___(who)____
> + if slab objects become corrupted. Enabling slub_debug
> + creates guard zones around objects and poisons objects
> + when not in use. Also tracks the last alloc / free.
> + For more information see Documentation/vm/slub.txt.
> +
> + slub_min_order= [MM, SLUB]
> + Determines the mininum page order for slabs. Must be
> + lower than slub_max_order
^. (end with period)
> + For more information see Documentation/vm/slub.txt.
> Index: slub/Documentation/vm/slub.txt
> ===================================================================
> --- slub.orig/Documentation/vm/slub.txt 2007-05-23 19:34:49.000000000 -0700
> +++ slub/Documentation/vm/slub.txt 2007-05-23 19:59:45.000000000 -0700
> +Slab validation
> +---------------
> +
> +SLUB can validate all object if the kernel was booted with slub_debug. In
> +order to do so you must have the slabinfo tool. Then you can do
> +
> +slabinfo -v
> +
> +which will test all objects. Output will be generated to the syslog.
> +
> +This also works in a more limited way if boot was without slab debug.
> +In that case slabinfo -v simply tests all reachable objects. Usually
> +these are in the cpu slabs and the partial slabs. Full slabs are not
CPU
> +tracked by SLUB in a non debug situation.
---
~Randy
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