[LTP] [PATCH] kernel/numa: sleep 2s in test01 for waiting numastat updating

[Cyril Hrubis <chrubis@suse.cz>]

Hi!
> Without this patch always get the below error with kernel 4.6.0:
> "ltpapicmd.c:193: Test #1: NUMA hit and localnode increase in node0 is
> less than expected"
> 
> numastat's "local_node" might take some to update even though we malloc
> the local memory for each node.
> 
> So this patch in targets to sleep for 2 seconds until "local_node" get
> updated.

I've seen this failure as well and also the test 3, test 5 and test 6
two of them have sleep 2s already, hence adding sleep 2 is not good
enough it only makes the race condition less probable.

What we should do instead is to get the new stastistic in loop with a
short (~0.1s) sleep util we get the expected value or until timeout has
been reached (~10s). And this should be done ideally as a function
called from each of the numa tests.

-- 
Cyril Hrubis
chrubis@suse.cz