On Fri, Jan 19, 2024 at 07:12:48AM -0800, Jakub Kicinski wrote:
> If there is more than 32 cpus the bitmask will start to contain
> commas, leading to:
>
> ./rps_default_mask.sh: line 36: [: 00000000,00000000: integer expression expected
>
> Remove the commas, bash doesn't interpret leading zeroes as oct
> so that should be good enough.
>
> Fixes: c12e0d5f267d ("self-tests: introduce self-tests for RPS default mask")
> Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
> ---
> CC: shuah@xxxxxxxxxx
> CC: horms@xxxxxxxxxx
> CC: linux-kselftest@xxxxxxxxxxxxxxx
> ---
> tools/testing/selftests/net/rps_default_mask.sh | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/tools/testing/selftests/net/rps_default_mask.sh b/tools/testing/selftests/net/rps_default_mask.sh
> index a26c5624429f..f8e786e220b6 100755
> --- a/tools/testing/selftests/net/rps_default_mask.sh
> +++ b/tools/testing/selftests/net/rps_default_mask.sh
> @@ -33,6 +33,10 @@ chk_rps() {
>
> rps_mask=$($cmd /sys/class/net/$dev_name/queues/rx-0/rps_cpus)
> printf "%-60s" "$msg"
> +
> + # In case there is more than 32 CPUs we need to remove commas from masks
> + rps_mask=${rps_mask/,}
> + expected_rps_mask=${expected_rps_mask/,}
Hi Jakub,
AFAIK this will only remove the first incidence of a comma.
So I'm assuming this breaks with >64 CPUs.
> if [ $rps_mask -eq $expected_rps_mask ]; then
> echo "[ ok ]"
> else
