Received: by 2002:a25:ad19:0:0:0:0:0 with SMTP id y25csp7293430ybi; Mon, 22 Jul 2019 10:27:10 -0700 (PDT) X-Google-Smtp-Source: APXvYqymH61LmKixrCNbVvF3lmLMt8oSOw3+vLivXGwCWicSpW0O/lalx7BSMG5Gw4gk8i8C19Qv X-Received: by 2002:a17:90a:3401:: with SMTP id o1mr77673762pjb.7.1563816430684; Mon, 22 Jul 2019 10:27:10 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1563816430; cv=none; d=google.com; s=arc-20160816; b=Kpy4KpSQxua2ZevbqKnJogZ0/fSUa7kk5fRpozjIHycnsCEX+UoD2GL1IrvtCT9ZHh 5CLQkVyx7hYXF7I6Gx9Be+AU/fiQGvmdhiZL7Km0im0DuvED5za3KQ8g+zH3g3SJfCdo hM0CL0DvOZ7Gr18To7TWUGBqZGrDcK8nw209omsFbdFs4N8zi5rjHDafrVw3S242h9oi ZXqmafsifyzgkrKxSCdq8yN2PG5JrVb0xogdxQNbwkgGC1Tj/9GeN3jwSzhw86f4g5LE dNwkHEQJXMxLJ4LLjbPwrkvAxXalUJSbToSaA1XQszraHSCIH4yLV8dY0i5tw/os6LJu Gxnw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:user-agent:in-reply-to :content-disposition:mime-version:references:message-id:subject:cc :to:from:date:dkim-signature; bh=5YZT7KL+7T6QyMNFHH/fM4//uKlaeQVR8jXG29UjWAY=; b=LgM2iqNFMFNm8FMZbC3A4CdWlI7KumeFcUFqRrOFn9aa1PK9ieLZbmvjRgG3iYPy7p D83Mom6LFWx3hxqpD46kFt7lGl0qWnj1akvKHxtoB1cmAinkkyHriOlbD1eZKFy2JUck lZEI7Twxpk/ChyTvwwtcoi/+VL+M4EWbvf1PnHCYpIsgUq+Z4RuFaVXhfWu6BCINH/5S DqJmi9y1hQPUrLJI1yfVx5n34x+PV0jtSlmKqxTIX01LX5wIhfyP09HiXJIsxliwyqbq BhBq2Et3yFkep0/iaVUfQBEO/OSvMnapbjCzHmi9H8cUFmbYiKzp38YT/fUvMQm8KADd ILKA== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@kernel.org header.s=default header.b=zAewChpd; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id 32si11300146pla.181.2019.07.22.10.26.55; Mon, 22 Jul 2019 10:27:10 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=default header.b=zAewChpd; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730652AbfGVOXD (ORCPT + 99 others); Mon, 22 Jul 2019 10:23:03 -0400 Received: from mail.kernel.org ([198.145.29.99]:54180 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728083AbfGVOXC (ORCPT ); Mon, 22 Jul 2019 10:23:02 -0400 Received: from localhost (unknown [223.226.98.106]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 24CC2217D6; Mon, 22 Jul 2019 14:23:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1563805381; bh=cmeknv+ms+SGcXgCwrtlqmuRDH1GTIq39zwqMIJiiXo=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=zAewChpdqo3yoTZoj5XSDwyLeuv1n5gaKyp4cDy0ltGITn+FHZ0MpF8OK+fz3nihW +vPDYEMZ46I9chAcK0gBR2BzCmVnnaGfnAlx6SC43iEPJJGHPjAImLjqLEPHoTFO4p G8CY35nRdFh95P1EArFDL4KcrOuDAC/kHgdlyb6U= Date: Mon, 22 Jul 2019 19:51:49 +0530 From: Vinod Koul To: Arnd Bergmann Cc: Gustavo Pimentel , Dan Williams , Andy Shevchenko , Russell King , Joao Pinto , dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 1/3] [v2] dmaengine: dw-edma: fix unnecessary stack usage Message-ID: <20190722142149.GU12733@vkoul-mobl.Dlink> References: <20190722124457.1093886-1-arnd@arndb.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190722124457.1093886-1-arnd@arndb.de> User-Agent: Mutt/1.11.3 (2019-02-01) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 22-07-19, 14:44, Arnd Bergmann wrote: > Putting large constant data on the stack causes unnecessary overhead > and stack usage: > > drivers/dma/dw-edma/dw-edma-v0-debugfs.c:285:6: error: stack frame size of 1376 bytes in function 'dw_edma_v0_debugfs_on' [-Werror,-Wframe-larger-than=] > > Mark the variable 'static const' in order for the compiler to move it > into the .rodata section where it does no such harm. Applied all, thanks Please do note the link was pointing to older rev, I have updated them to this revision. -- ~Vinod