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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id CC7D1D25B6E for ; Wed, 28 Jan 2026 13:28:24 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 44D7510E2AE; Wed, 28 Jan 2026 13:28:24 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=linaro.org header.i=@linaro.org header.b="bGfsZguf"; dkim-atps=neutral Received: from mail-ed1-f49.google.com (mail-ed1-f49.google.com [209.85.208.49]) by gabe.freedesktop.org (Postfix) with ESMTPS id D327910E2AE for ; Wed, 28 Jan 2026 13:28:22 +0000 (UTC) Received: by mail-ed1-f49.google.com with SMTP id 4fb4d7f45d1cf-658b7d13f09so1411636a12.2 for ; Wed, 28 Jan 2026 05:28:22 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1769606901; x=1770211701; darn=lists.freedesktop.org; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=ZagjdEHQ21hUp48jB8mdfWlYbNhCwoXWZ/IjA+v/NaQ=; b=bGfsZguf1vbaj7n5Dgpns462NCUnzoWXIMa9ewKLSvi+U2XA3fEFby1CU2Yi2945ZU DBlkbR9KYnVoX2SnL4NWXMhR+OrRm8eeCj8JQm+RGA35ibj0SnUh5dM8vFrlAo/25h3m Ubyppx9V/awJ/ngwExBbNbEaVZPTZP86AaR3W3fATn4DU5TkdoeBweO3gG13wvisoAjD JwjWv77C5byJOejkJAXLB3atLUo8GgT+seS22a8END4IRealhgl4602FMrsCvtC80ph1 JHEF0S5Y7ZCE29T/mETwKs2xACXhG2zUSYKNFJfyYipe9gqeESurAQPkUmUpqIFW7iKk +/Pg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1769606901; x=1770211701; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-gg:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=ZagjdEHQ21hUp48jB8mdfWlYbNhCwoXWZ/IjA+v/NaQ=; b=iXgfaLoiq2X+lrQb3zb/7Y847SVLkr+Hv6It01c+y8PQ/HjCDlOKoVrwMgcILnPFhk n8louHXkExGLjafS2KiknmTncnSn+4PFrE1NB0jKeQrQoNn6xThQDUqbeCSemqjlr7Fa rwKnyBvLkdVSiC8EhRmi2KXboDSahkSLMKpYnh01Z1PuamgnL2kXi6N1KDhRiNcOBnEP vM8YwgRt417m05Nx4/bGoDplb2Nv0X9iqUQEzw6rtxq37KtGWYtlNVTV3u0pHCQAUxoZ ipqNuB6xh6/IVZxreBbIO9k4Kiqm+tqPVhaQhEPNFTyVrUF/dEk1GCrVzceG/j0pEZDB y03w== X-Forwarded-Encrypted: i=1; AJvYcCVUJeDV+aoaZ59uzLKyrvJyPdy/JfRfektbZEUz9Lc5xIJ5XFiS2O1q0syjnrMrJnp1t27u6bWSTrk=@lists.freedesktop.org X-Gm-Message-State: AOJu0YyAAdQRLwG1vWlLS9asRvZZTOZjftWWa4mAym5mgklWXR2wY1Pp mR5DvamlqHvUx2jnZPT2FGnoe9OyGqwXrspM4XkS0gz4mdWapJwYOY3a/rf9xDoVvss= X-Gm-Gg: AZuq6aIOCLivkiepis6vuzw8I+pqvsg4+DvvsqNWeXLT3iJ/THWZgHuiha/zUFYeFGb tNAEkdcAfDXkgUUHHwsxKTgpKsNCvXQ6+K1ma06NDQQ7QxtglhACTguMISh29Vb0r3PZCw3aAs+ 2Nugz7AxeO7rSAAH6N4arKIN0V7fIOp4O9xr3Hc6aSL5ud4FB4fNtMk0Cc6UaL2Lv4dytL/2NML +wfY1dA19loMauonM/122oPLrYlEUK7b+DlzudVtxPpKQvq3uV3P6/HmpbX9MtaN7Ne0Uz6BoJK oKNh+tQUE7ON1a8ev8HKoMeC4l4TsGVOQCmEV+QvjsPoqn/JnH/IYT7+RXl7NYeTR/gQ2cQQUyM alnyvqv9whwy8oYAIDkAwoTLnLgwwaXUyqdw1WT8KapUt6i0gCNuxkr+IeohO2p3D3j5QAqCvle b9kZBiPCzBPKExYYpM X-Received: by 2002:a17:907:3e0c:b0:b88:38e9:8f89 with SMTP id a640c23a62f3a-b8daae2b120mr380653366b.0.1769606901119; Wed, 28 Jan 2026 05:28:21 -0800 (PST) Received: from localhost ([196.207.164.177]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-b8dbecea68dsm131504166b.0.2026.01.28.05.28.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 28 Jan 2026 05:28:20 -0800 (PST) Date: Wed, 28 Jan 2026 16:28:17 +0300 From: Dan Carpenter To: ChanSoo Shin Cc: andy@kernel.org, gregkh@linuxfoundation.org, dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org, linux-staging@lists.linux.dev Subject: Re: [PATCH] fbtft: Improve damage_range to mark only changed rows Message-ID: References: <20260128130503.868466-1-csshin9928@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260128130503.868466-1-csshin9928@gmail.com> X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" On Wed, Jan 28, 2026 at 10:05:03PM +0900, ChanSoo Shin wrote: > Instead of marking the entire display as dirty, calculate > start_row and end_row based on off/len and mark only those rows. > This improves performance for partial framebuffer updates. > > Signed-off-by: ChanSoo Shin > --- This is v3 but it's not marked or described. Have you tested this patch? What was the speed up? regards, dan carpenter