Hi!
> Because the IAA Compression Accelerator requires significant user
> setup in order to be used properly, this adds documentation on the
> iaa_crypto driver including setup, usage, and examples.
>
> Signed-off-by: Tom Zanussi <tom.zanussi@xxxxxxxxxxxxxxx>
> +accel-config
> +------------
> +
> +Unlike typical drivers, the iaa_crypto driver does not enable the
> +device on driver load. Due to complexity and configurability of the
> +accelerator devices, it was a design decision to have the user
> +configure the device and manually enable the desired devices and
> +workqueues.
Is the driver really so special? Is it widely used besides of zswap? Could some kind of
simple default configuration good enough for zswap be provided?
> +The userspace tool to help doing that is called accel-config. Using
> +accel-config to configure device or loading a previously saved config
> +is highly recommended. The device can be controlled via sysfs
> +directly but comes with the warning that do this ONLY if you know
> +exactly what you are doing. This document will not cover the sysfs
> +interface but assumes you will be using accel-config.
Not covering the interface here is okay, but we really should have description somewhere,
and there should be pointer to it here.
> +++ b/Documentation/driver-api/crypto/iaa/index.rst
> @@ -0,0 +1,20 @@
> +.. SPDX-License-Identifier: GPL-2.0
> +
> +=================================
> +IAA (Intel Analytics Accelerator)
> +=================================
> +
> +IAA provides hardware compression and decompression via the crypto
> +API.
Why is it called "analytics accelerator" when its main function is compression?
Best regards,
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
