[LTP] [PATCH] [RFC] [WORK-IN-PROGRESS] syscalls: Add set_mempolicy numa tests.

[Cyril Hrubis <chrubis@suse.cz>]

Hi!
> Why not use get_mempolicy(.., MPOL_F_NODE | MPOL_F_ADDR) to get node id,
> for the page we just allocated?

Good point, I will try to look into that.

> This kinda overlaps with numa_helper in some aspects. Which reminds me
> of some issues we had to address there:
> - memory-less nodes
> - nodes with little to no free memory

I'm aware of the overlap and we should definitely merge these two into a
single library later on.

As far as I can tell the library I wrote covers the case of memory-less
nodes, these should the the ones that does not have the membind flag set
in the default mask that is returned by numa_get_membind().

We should probably add API for specifying minimal amount of free memory
per node as well, which would fix the second problem. We may add
min_free parameter to the tst_get_nodemap() function that would be used
if passed the TST_NUMA_MEM flag.

-- 
Cyril Hrubis
chrubis@suse.cz