Re: [PATCH 0/5] crypto: talitos: Add crypto async queue handling

From: Martin Hicks <mort@bork.org>
To: Kim Phillips <kim.phillips@freescale.com>,
	Scott Wood <scottwood@freescale.com>,
	Kumar Gala <galak@kernel.crashing.org>
Cc: Martin Hicks <mort@bork.org>,
	linuxppc-dev@lists.ozlabs.org, linux-crypto@vger.kernel.org
Subject: Re: [PATCH 0/5] crypto: talitos: Add crypto async queue handling
Date: Fri, 20 Feb 2015 13:23:28 -0500	[thread overview]
Message-ID: <CAJUS3XmnuUhgezxhBKeu2QLk-QqGVf3ZuwSycs_w=J3KC3BATg@mail.gmail.com> (raw)
In-Reply-To: <1424449276-5288-1-git-send-email-mort@bork.org>

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I've just noticed that performance is pretty terrible with maxcpus=1, so
I'll investigate that.
mh

On Fri, Feb 20, 2015 at 11:21 AM, Martin Hicks <mort@bork.org> wrote:

> I was testing dm-crypt performance with a Freescale P1022 board with
> a recent kernel and was getting IO errors while doing testing with LUKS.
> Investigation showed that all hardware FIFO slots were filling and
> the driver was returning EAGAIN to the block layer, which is not an
> expected response for an async crypto implementation.
>
> The following patch series adds a few small fixes, and reworks the
> submission path to use the crypto_queue mechanism to handle the
> request backlog.
>
>
> Martin Hicks (5):
>   crypto: talitos: Simplify per-channel initialization
>   crypto: talitos: Remove MD5_BLOCK_SIZE
>   crypto: talitos: Fix off-by-one and use all hardware slots
>   crypto: talitos: Reorganize request submission data structures
>   crypto: talitos: Add software backlog queue handling
>
>  drivers/crypto/talitos.c |  189
> ++++++++++++++++++++++++----------------------
>  drivers/crypto/talitos.h |   44 +++++++++--
>  2 files changed, 137 insertions(+), 96 deletions(-)
>
> --
> 1.7.10.4
>
>

-- 
Martin Hicks P.Eng.      |         mort@bork.org
Bork Consulting Inc.     |   +1 (613) 266-2296

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