Re: combinatorial explosion in lockdep

From: David Miller
Date: Wed Jul 30 2008 - 02:56:36 EST


From: David Miller <davem@xxxxxxxxxxxxx>
Date: Tue, 29 Jul 2008 21:45:03 -0700 (PDT)

> If we can agree on this as a fix, it should definitely be backported
> and submitted for -stable :-)
>
> ----------------------------------------
>
> lockdep: Fix combinatorial explosion in lock subgraph traversal.

So the next problem I run into is that 8192 is not a large
enough MAX_LOCKDEP_ENTRIES for this larger cpu count boxes.
8192 isn't even big enough for my 64 cpu box.

It needs to be scaled by NR_CPUS, or something like that.
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