On Wed, 26 Aug 2020 10:17:36 +0200
Jesper Dangaard Brouer <brouer@xxxxxxxxxx> wrote:
> When stdout output from the selftests tool 'test_maps' gets redirected
> into e.g file or pipe, then the output lines increase a lot (from 21
> to 33949 lines). This is caused by the printf that happens before the
> fork() call, and there are user-space buffered printf data that seems
> to be duplicated into the forked process.
>
> To fix this fflush() stdout before the fork loop in __run_parallel().
>
> Signed-off-by: Jesper Dangaard Brouer <brouer@xxxxxxxxxx>
Fixes: 1a97cf1fe503 ("selftests/bpf: speedup test_maps")
I forgot to add the fixes line to the patch, I hope patchwork[1] will
pick it up for maintainers.
[1] http://patchwork.ozlabs.org/project/netdev/patch/159842985651.1050885.2154399297503372406.stgit@firesoul/
--
Best regards,
Jesper Dangaard Brouer
MSc.CS, Principal Kernel Engineer at Red Hat
LinkedIn: http://www.linkedin.com/in/brouer
