[LTP] [PATCH v2 2/2] libltpnuma: remove restrictions on numa node-id

[Balamuruhan S]

On Wed, May 08, 2019 at 04:44:47PM +0800, Li Wang wrote:
> For some ppc64le systems, it has non-continuous numa nodes in
> hardware configuration. So we're hitting the below warnings while
> running set_mempolicy tests on that. To fix this issue, let's just
> remove restrictions on numa node-id in get_mempolicy().
> 
> Error Log
> ---------
> tst_test.c:1096: INFO: Timeout per run is 0h 50m 00s
> tst_numa.c:190: INFO: Found 2 NUMA memory nodes
> set_mempolicy01.c:63: PASS: set_mempolicy(MPOL_BIND) node 0
> tst_numa.c:26: INFO: Node 0 allocated 16 pages
> tst_numa.c:26: INFO: Node 8 allocated 0 pages
> set_mempolicy01.c:82: PASS: child: Node 0 allocated 16
> set_mempolicy01.c:63: PASS: set_mempolicy(MPOL_BIND) node 8
> tst_numa.c:92: WARN: get_mempolicy(...) returned invalid node 8
> tst_numa.c:92: WARN: get_mempolicy(...) returned invalid node 8
> tst_numa.c:92: WARN: get_mempolicy(...) returned invalid node 8
> ...
> tst_numa.c:26: INFO: Node 0 allocated 0 pages
> tst_numa.c:26: INFO: Node 8 allocated 0 pages
> set_mempolicy01.c:86: FAIL: child: Node 8 allocated 0, expected 16
> 
> lscpu
> -----
> Architecture:        ppc64le
> ...
> CPU(s):              128
> Core(s) per socket:  16
> Socket(s):           2
> NUMA node(s):        2
> Model name:          POWER9, altivec supported
> ...
> NUMA node0 CPU(s):   0-63
> NUMA node8 CPU(s):   64-127
> 
> Signed-off-by: Li Wang <liwang@redhat.com>
> Cc: Cyril Hrubis <chrubis@suse.cz>
> ---
>  libs/libltpnuma/tst_numa.c | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/libs/libltpnuma/tst_numa.c b/libs/libltpnuma/tst_numa.c
> index 0ba6daf39..56c8640ff 100644
> --- a/libs/libltpnuma/tst_numa.c
> +++ b/libs/libltpnuma/tst_numa.c
> @@ -88,8 +88,9 @@ void tst_nodemap_count_pages(struct tst_nodemap *nodes,
>  		if (ret < 0)
>  			tst_brk(TBROK | TERRNO, "get_mempolicy() failed");
>  
> -		if (node < 0 || (unsigned int)node >= nodes->cnt) {
> -			tst_res(TWARN, "get_mempolicy(...) returned invalid node %i\n", node);
> +		if (node < 0) {

It is better to have check for powerpc and remove restriction as it will
still hold good for other arch.

-- Bala

> +			tst_res(TWARN,
> +				"get_mempolicy(...) returned invalid node %i\n", node);
>  			continue;
>  		}
>  
> -- 
> 2.20.1
> 
> 
> -- 
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