From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 90303C433F5 for ; Mon, 2 May 2022 09:00:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1381121AbiEBJDf (ORCPT ); Mon, 2 May 2022 05:03:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53914 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1383985AbiEBJDe (ORCPT ); Mon, 2 May 2022 05:03:34 -0400 Received: from metis.ext.pengutronix.de (metis.ext.pengutronix.de [IPv6:2001:67c:670:201:290:27ff:fe1d:cc33]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 417C058381 for ; Mon, 2 May 2022 02:00:06 -0700 (PDT) Received: from ptx.hi.pengutronix.de ([2001:67c:670:100:1d::c0]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1nlRuW-0002z8-L8; Mon, 02 May 2022 11:00:04 +0200 Received: from mgr by ptx.hi.pengutronix.de with local (Exim 4.92) (envelope-from ) id 1nlRuV-000570-Dp; Mon, 02 May 2022 11:00:03 +0200 Date: Mon, 2 May 2022 11:00:03 +0200 From: Michael Grzeschik To: Dan Vacura Cc: Laurent Pinchart , linux-usb@vger.kernel.org, balbi@kernel.org, paul.elder@ideasonboard.com, kernel@pengutronix.de, nicolas@ndufresne.ca, kieran.bingham@ideasonboard.com Subject: Re: [PATCH 3/5] usb: gadget: uvc: increase worker prio to WQ_HIGHPRI Message-ID: <20220502090003.GH7671@pengutronix.de> References: <20220402233914.3625405-1-m.grzeschik@pengutronix.de> <20220402233914.3625405-4-m.grzeschik@pengutronix.de> <20220429200137.GE7671@pengutronix.de> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="fmEUq8M7S0s+Fl0V" Content-Disposition: inline In-Reply-To: <20220429200137.GE7671@pengutronix.de> X-Sent-From: Pengutronix Hildesheim X-URL: http://www.pengutronix.de/ X-IRC: #ptxdist @freenode X-Accept-Language: de,en X-Accept-Content-Type: text/plain X-Uptime: 10:51:06 up 32 days, 21:20, 91 users, load average: 0.24, 0.20, 0.21 User-Agent: Mutt/1.10.1 (2018-07-13) X-SA-Exim-Connect-IP: 2001:67c:670:100:1d::c0 X-SA-Exim-Mail-From: mgr@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-usb@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org --fmEUq8M7S0s+Fl0V Content-Type: text/plain; charset=us-ascii; format=flowed Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hi Dan, On Fri, Apr 29, 2022 at 10:01:37PM +0200, Michael Grzeschik wrote: >On Fri, Apr 29, 2022 at 01:51:48PM -0500, Dan Vacura wrote: >>Thanks for this change it improves the performance with the DWC3 >>controller on QCOM chips in an Android 5.10 kernel. I haven't tested the >>scatter/gather path, so memcpy was used here via >>uvc_video_encode_isoc(). I was able to get around 30% improvement (fps >>on host side). I did modify the alloc to only set the WQ_HIGHPRI flag. I missed to ask you to try the WQ_CPU_INTENSIVE flag. It would be interesting if you can see further improvement. Regards, Michael --=20 Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | --fmEUq8M7S0s+Fl0V Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEElXvEUs6VPX6mDPT8C+njFXoeLGQFAmJvnZAACgkQC+njFXoe LGQZoA//YWrpLSjXqB/O2zsGF9l6/pya2egg2gUfdoYxJMyU2FtogmLiGltvOK+c nEYa78nihT+NadT7pBsUBPRx2RrZ/45lg55crPlRQL9TEOYFVPcEG0hoffbiiuup 4Qs6TkUeadTdJuIdy9p6klqCu/Butu0CrkMjx2mLfWlpCquNoNOhIxQ6LeE5jcgP fpagLD2uAzo1lzX5JaIQXMtAkCZ/2WVjHY7ON5Aor8lf+Rw2DwtEEjX7SAk8spW6 UQibfM+yOyKuSAvTjD5lFV4hBw9lRboTcZ3UH7GUm/4MHJGgXDkzOhneUvbIjCw/ gzan4NrvmBjl5gXSYdq6TZRuBN1gMd/a5k0YXemxCkgMuriwXk5T6pk0GaUjfNQt U1TiBZM0ADMU1VMeQYzjni+Jn3Nd+vY4dq9WErSnxuzIYDp35onafkNw+NzzAMLE 2IJn1rqhmvHdqFRFHiltHlktCBki8WXylRNVtpFDxtq734EToEKxTPBLHuRmNqWj ksoa4LHVq/NluDNOO95oqn5nH0janCJ3kze2DO0jghgsTup0P51X9TahYplZDo8A gBJKOCf3urovWSjzchmMBWF7ILhN0wxEZl96zoEDaLBGnaHlKG8MgR63OWtvat1e ikWPprdn5ETVLpyGM06lhSxZPzE8+p4GEuqc+YP7q2p01KWLfko= =8bUQ -----END PGP SIGNATURE----- --fmEUq8M7S0s+Fl0V--