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 X-Spam-Level: X-Spam-Status: No, score=-3.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_NEOMUTT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8C779C04AB5 for ; Thu, 6 Jun 2019 08:33:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5F35E207E0 for ; Thu, 6 Jun 2019 08:33:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727225AbfFFIdU (ORCPT ); Thu, 6 Jun 2019 04:33:20 -0400 Received: from relay11.mail.gandi.net ([217.70.178.231]:42799 "EHLO relay11.mail.gandi.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726092AbfFFIdU (ORCPT ); Thu, 6 Jun 2019 04:33:20 -0400 Received: from localhost (aaubervilliers-681-1-24-139.w90-88.abo.wanadoo.fr [90.88.144.139]) (Authenticated sender: maxime.ripard@bootlin.com) by relay11.mail.gandi.net (Postfix) with ESMTPSA id 6C6F510001B; Thu, 6 Jun 2019 08:33:08 +0000 (UTC) Date: Thu, 6 Jun 2019 10:33:07 +0200 From: Maxime Ripard To: Jernej =?utf-8?Q?=C5=A0krabec?= Cc: paul.kocialkowski@bootlin.com, wens@csie.org, mchehab@kernel.org, gregkh@linuxfoundation.org, linux-media@vger.kernel.org, devel@driverdev.osuosl.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 6/7] media: cedrus: Add infra for extra buffers connected to capture buffers Message-ID: <20190606083307.b5zpk4n6x3w6mtmb@flea> References: <20190530211516.1891-1-jernej.skrabec@siol.net> <20190530211516.1891-7-jernej.skrabec@siol.net> <20190603121859.sbphcjy75kmed6oc@flea> <3029072.frl2UAsRGt@jernej-laptop> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="llwlg2xtnnijika2" Content-Disposition: inline In-Reply-To: <3029072.frl2UAsRGt@jernej-laptop> User-Agent: NeoMutt/20180716 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --llwlg2xtnnijika2 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, Jun 03, 2019 at 05:48:25PM +0200, Jernej =C5=A0krabec wrote: > Dne ponedeljek, 03. junij 2019 ob 14:18:59 CEST je Maxime Ripard napisal(= a): > > > +static void cedrus_buf_cleanup(struct vb2_buffer *vb) > > > +{ > > > + struct vb2_queue *vq =3D vb->vb2_queue; > > > + > > > + if (!V4L2_TYPE_IS_OUTPUT(vq->type)) { > > > + struct cedrus_ctx *ctx =3D vb2_get_drv_priv(vq); > > > + struct cedrus_buffer *cedrus_buf; > > > + > > > + cedrus_buf =3D vb2_to_cedrus_buffer(vq->bufs[vb->index]); > > > + > > > + if (cedrus_buf->extra_buf_size) > > > + dma_free_coherent(ctx->dev->dev, > > > + cedrus_buf- > >extra_buf_size, > > > + cedrus_buf- > >extra_buf, > > > + cedrus_buf- > >extra_buf_dma); > > > + } > > > +} > > > + > > > > I'm really not a fan of allocating something somewhere, and freeing it > > somewhere else. Making sure you don't leak something is hard enough to > > not have some non-trivial allocation scheme. > > Ok, what about introducing two new optional methods in engine callbacks, > buffer_init and buffer_destroy, which would be called from cedrus_buf_ini= t() and > cedrus_buf_cleanup(), respectively. That way all (de)allocation logic sta= ys > within the same engine. Yep, that would work for me. Thanks! Maxime -- Maxime Ripard, Bootlin Embedded Linux and Kernel engineering https://bootlin.com --llwlg2xtnnijika2 Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQRcEzekXsqa64kGDp7j7w1vZxhRxQUCXPjPwwAKCRDj7w1vZxhR xfVpAQCOr8fs3rk1qqMT7K32xwhOKrfkpEzeOlKL8hYuHFgkPQEA+ZYtxUfOTSQu 8EDER1DVGqjSGhBpL356m0j1JSeHNgM= =Hz+3 -----END PGP SIGNATURE----- --llwlg2xtnnijika2--