Re: [LTP] [PATCH] numa01.sh: unset default cpuset awareness before verify physcpubind

Li Wang
2023-09-12T08:32:06Z

On Mon, Sep 11, 2023 at 7:32 PM Shizhao Chen <shichen@redhat.com> wrote:

> On systems with cpu isolation configured (a very common technique used in
> the
> real time kernel), $run_on_cpu may happen to be an isolated core and hence
> unaccessible to numactl.
>
> Unset default cpuset awareness with --all, so numactl can use all possible
> CPUs/nodes for following physcpubind settings.
>
> Signed-off-by: Shizhao Chen <shichen@redhat.com>
>

Reviewed-by: Li Wang <liwang@redhat.com>

---
> testcases/kernel/numa/numa01.sh | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/testcases/kernel/numa/numa01.sh
> b/testcases/kernel/numa/numa01.sh
> index 367813ce9..0181cd8f5 100755
> --- a/testcases/kernel/numa/numa01.sh
> +++ b/testcases/kernel/numa/numa01.sh
> @@ -183,7 +183,7 @@ test4()
> no_of_cpus=$(tst_ncpus)
> # not sure whether cpu's can't be in odd number
> run_on_cpu=$(($((no_of_cpus+1))/2))
> - numactl --physcpubind=$run_on_cpu support_numa pause & #just
> waits for sigint
> + numactl --all --physcpubind=$run_on_cpu support_numa pause &
> #just waits for sigint
> pid=$!
> var=`awk '{ print $2 }' /proc/$pid/stat`
> while [ $var = '(numactl)' ]; do
> --
> 2.41.0
>
>

--
Regards,
Li Wang