[percpu] rerun aim9.sync_disk_rw.ops_per_sec request

Hi Oliver,

Thanks again for your help previously with running the tests in [1].
There have been some other clean ups so I've rebased that patch [2] and
created a separate branch in percpu#depop-batching [3]. Could you please
run aim9.sync_disk_rw.ops_per_sec against percpu#depop-batching?

[1] https://lore.kernel.org/lkml/20210427073448.GD32408@xsang-OptiPlex-9020/ (local)
[2] https://lore.kernel.org/lkml/20210419225047.3415425-5-dennis@kernel.org/ (local)
[3] https://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu.git/log/?h=depop-batching

Thanks,
Dennis