netdev - multi producer / multi consumer lock-free queue with ptr

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Message-ID: <CAHmME9qPYL-wzyX0Q7RG7Uk9kAeWbzNN5=0YrmbniUR2O3rSxA@mail.gmail.com>
Date:   Wed, 4 Oct 2017 13:18:24 +0200
From:   "Jason A. Donenfeld" <Jason@...c4.com>
To:     "Michael S. Tsirkin" <mst@...hat.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Netdev <netdev@...r.kernel.org>,
        Samuel Holland <samuel@...lland.org>,
        WireGuard mailing list <wireguard@...ts.zx2c4.com>
Subject: multi producer / multi consumer lock-free queue with ptr_ring

Hey Michael,

Thanks for your work on ptr_ring.h. I'm interested in using it, but in
a multi-producer, multi-consumer context. I realize it's been designed
for a single-producer, single-consumer context, and thus uses a
spinlock. I'm wondering if you'd be happy to receive patches that
implement things in a lock-free way, in order to make the data
structure more broadly usable.

In case you're curious, this would be used for the multi-core
algorithms in WireGuard.

Thanks,
Jason