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 EEFB0D25B65 for ; Wed, 28 Jan 2026 13:26:48 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 5C24F10E282; Wed, 28 Jan 2026 13:26:48 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=linaro.org header.i=@linaro.org header.b="Wi30YdRJ"; dkim-atps=neutral Received: from mail-wm1-f50.google.com (mail-wm1-f50.google.com [209.85.128.50]) by gabe.freedesktop.org (Postfix) with ESMTPS id DCA6610E282 for ; Wed, 28 Jan 2026 13:26:46 +0000 (UTC) Received: by mail-wm1-f50.google.com with SMTP id 5b1f17b1804b1-47ff94b46afso7977835e9.1 for ; Wed, 28 Jan 2026 05:26:46 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1769606805; x=1770211605; 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=loXdXykH2/xF3NA+Uwx4RfRbCLma9XM176QXX5TmjYg=; b=Wi30YdRJuqO4WhnGGsDWf4Xz4kJrO4KPcQnfj1SSCOpzidI5pphEPmUK5Ccnp57khD WxE2Riy9SgNzneSuEruzYcd2QYCSeyFD27fmXJfJt8Qmm2izoznbm6Eb4mvmo2GvjL/X 25NBLswLkkas9+gF7wplNJqsjB7UM2JZ0vXSbg17g/E4VWuw6BVEqT1QmtI5z/hcwX8y g+xULlwa4IvE5szpydgyD6j/SsXNLMysAFV3o95A+2vhHZv35Y+/KU8pyVCpIEk6emK1 wf/II4A9tvKbKbf8GD+Tp0PNH7yS8yxNSvGM2z09ljCpVuVz+XXW6OO7HjrKJNKb3pcN gBjw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1769606805; x=1770211605; 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=loXdXykH2/xF3NA+Uwx4RfRbCLma9XM176QXX5TmjYg=; b=M9gmG7/3VFFy2DNKSBvyzljPsNYnxk7vuIc+J7vE5Kj25RhflaTQvz96364gRAsEXe SD7pAE5lZ+8TqX/bWHi0ZhHo/Zs6BAcOt2TIohr+/RolMLEcTI2EtsGgzARn12UCAmwx sABxW/1SfbcTtdquXNR3SBVAqs1+adNt4ZX8xcfXP2GkUXrzCBY4V3FRrbAHwZLzlsuV 4N/Jb2XkXS5qG5f5SI7AifSLwNpiwIrAR/4CwAJ6YSjGR4YTEDG8nEI6+OthqglBqqKj /DEqo1ZVA1Hpq+JTa3zql2HtI0+Haq3XotOZloAxaCVIFTpzs6P8zQSKae6Dfk7sk+6P c89w== X-Forwarded-Encrypted: i=1; AJvYcCWs1Ym96/eOC7LLNkWm4oXW0w5YFsiTExPqQwfOQ1QQBQwBJwEv5/C/j9R0mN54bpxSn9l/NVhO03c=@lists.freedesktop.org X-Gm-Message-State: AOJu0YxZN9n761tHiSfY4CvJwOxwdXgzihAFHMBPT15XYwmBCbqogLrp jMvGl2z4kYbpdI1JM6dtoixfmavBxOoDHqCUQW9RwR+vp8jLXXj5b/DpoIiIJsBtVzQ5VkWTY4H Ok78k X-Gm-Gg: AZuq6aK1xzVm8ai845bV0GVcvyTwfOd5Cr6lmQn49uneqs/Qpfvq7eYMDf3g0b8o2E1 8blvoowlUF2id058HTr7uWTfLKotpzpDQsIr2K3HbWY78cDAsevnSnqAOrckvKXXOF1mqgft+pk DGmkGMVAFP5+ik+LwtkYWiS/WNAIT4XDswOloKTX5u7K3tGJV0UTfBXDoI2Eg0FgqLER+6hddTS J6bpeD2QPrEitzkJ5B8zslmZYxQh4NVoE8n54pYfDANuxRMyRSG4/8AW3X3LYAtOAV2ayZt9ZLD 1yyKMiXljnVrdBeLl4XAZjVjJtbPYFDMGpbAGqKVyxZSGzvMUDbIaLJPnVCbVIQFYVcwADvio1D g24PEdYbhzAsrFCulfMZf0Y50WSMXZrnzqPla3y9AkAub4LhWEeKzGh7fuLAktcPNk6M2wSl69a n5aTImuxcE2g6l+Uit X-Received: by 2002:a05:600c:4587:b0:47d:403a:277 with SMTP id 5b1f17b1804b1-48069e24034mr70902875e9.4.1769606805009; Wed, 28 Jan 2026 05:26:45 -0800 (PST) Received: from localhost ([196.207.164.177]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4806cde00e8sm66387125e9.6.2026.01.28.05.26.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 28 Jan 2026 05:26:44 -0800 (PST) Date: Wed, 28 Jan 2026 16:26:41 +0300 From: Dan Carpenter To: Waffle0823 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: <20260128085720.862399-1-csshin9928@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260128085720.862399-1-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 05:57:20PM +0900, Waffle0823 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: Waffle0283 csshin9928@gmail.com Please use your real name that you use to sign legal documents. The email address is in the wrong format. Have you tested this patch? What was the speedup? regards, dan carpenter