Re: [PATCH v2 net-next 0/12] bpf: map pre-alloc

[Alexei Starovoitov]

On 3/8/16 1:13 AM, Daniel Wagner wrote:
> > Some time back Daniel Wagner reported crashes when bpf hash map is
> > >used to compute time intervals between preempt_disable->preempt_enable
> > >and recently Tom Zanussi reported a dead lock in iovisor/bcc/funccount
> > >tool if it's used to count the number of invocations of kernel
> > >'*spin*' functions. Both problems are due to the recursive use of
> > >slub and can only be solved by pre-allocating all map elements.
>
> I gave it a short spin and lathist sample works just fine.

awesome. Thanks for testing!