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SubjectRe: [PATCH 0/9] padata: use unbound workqueues for parallel jobs
On Mon, Aug 12, 2019 at 08:52:15PM -0400, Daniel Jordan wrote:
> Hi,
> No objections the first time around[*], so this series is no longer RFC.
> The code is the same other than being rebased on recent padata fixes.
> Any feedback or testing welcome.
> Thanks,
> Daniel
> RFC -> v1:
> - Included Tejun's acks.
> - Added testing section to cover letter.
> Padata binds the parallel part of a job to a single CPU and round-robins
> over all CPUs in the system for each successive job. Though the serial
> parts rely on per-CPU queues for correct ordering, they're not necessary
> for parallel work, and it improves performance to run the job locally on
> NUMA machines and let the scheduler pick the CPU within a node on a busy
> system.
> This series makes parallel padata jobs run on unbound workqueues.

Looks good!

I did a test with IPsec pcrypt and it seems to work as expected.
Crypto load gets distributed, no network packet reordering.

Acked-by: Steffen Klassert <>

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