Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754242AbbKLKEn (ORCPT ); Thu, 12 Nov 2015 05:04:43 -0500 Received: from mezzanine.sirena.org.uk ([106.187.55.193]:56662 "EHLO mezzanine.sirena.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753798AbbKLKEl (ORCPT ); Thu, 12 Nov 2015 05:04:41 -0500 Date: Thu, 12 Nov 2015 10:04:22 +0000 From: Mark Brown To: Baolin Wang Cc: Mike Snitzer , axboe@kernel.dk, Alasdair G Kergon , dm-devel@redhat.com, neilb@suse.com, linux-raid@vger.kernel.org, jack@suse.cz, Arnd Bergmann , LKML , keith.busch@intel.com, jmoyer@redhat.com, tj@kernel.org, bart.vanassche@sandisk.com, "Garg, Dinesh" Message-ID: <20151112100422.GM12392@sirena.org.uk> References: <20151111181813.GD12236@redhat.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="Zl+NncWK+U5aSfTo" Content-Disposition: inline In-Reply-To: X-Cookie: We have DIFFERENT amounts of HAIR -- User-Agent: Mutt/1.5.24 (2015-08-30) X-SA-Exim-Connect-IP: 94.175.94.161 X-SA-Exim-Mail-From: broonie@sirena.org.uk Subject: Re: [PATCH 0/2] Introduce the request handling for dm-crypt X-SA-Exim-Version: 4.2.1 (built Mon, 26 Dec 2011 16:24:06 +0000) X-SA-Exim-Scanned: Yes (on mezzanine.sirena.org.uk) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1680 Lines: 43 --Zl+NncWK+U5aSfTo Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Thu, Nov 12, 2015 at 04:20:41PM +0800, Baolin Wang wrote: > 3. perforamence data > It is just a simple dd test result, and will provide the formal report > in future. But from the simple test, we can see the improvement. It's probably also worth pointing out that Qualcomm have been shipping an out of tree implementation of this as a separate module in their BSP (originally written by Danesh Garg who's on this thread): https://android.googlesource.com/kernel/msm/+/android-msm-dory-3.10-kitkat-wear/drivers/md/dm-req-crypt.c Android now wants to encrypt phones and tablets by default and have been seeing substantial performance hits as a result, we can try to get people to share performance data from productionish systems but it might be difficult. --Zl+NncWK+U5aSfTo Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQEcBAEBCAAGBQJWRGQlAAoJECTWi3JdVIfQ7ZoH/i6/2JElYTetwRMdire3tBjM 7O0w4z0tAp6MYlwhwam8u8KZV3b9VBkxaG5e4EqSqz04KbbKsfcMSQyMGB1Gig9W fpCdMr8qJdlFi3g98jTFzuJkXncD1SKD3Pm58faDHF5z5GFFh2ySH8NxN6Oki+Ih 43AvuAYhiFI6kSJ/kqHBtiVy39bm/TUW0UR/+F4g4YgGfM/LIN6s88rvOcn+JRva KcFKDKiK8s5l14fdn1iKl6owLs3gUfdjgXhYCa+dWEG5KB82SkBN/Z3kf53GU8YR CGx7+LtzTmehB5NRhFUAD6gx6cZxiRuuPgTIVJkQ8x7A2yFGUlKvZaksh8TiXh4= =EaTi -----END PGP SIGNATURE----- --Zl+NncWK+U5aSfTo-- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/