Received: by 2002:ac0:a582:0:0:0:0:0 with SMTP id m2-v6csp404885imm; Wed, 3 Oct 2018 19:01:04 -0700 (PDT) X-Google-Smtp-Source: ACcGV62FHoMmnyTIyNQNwD3rP05vCExZkmWkI9frD67fnOjpYxrOXSZyStfcOPFBoqEY+06/LJrd X-Received: by 2002:a17:902:6102:: with SMTP id t2-v6mr4170213plj.278.1538618464885; Wed, 03 Oct 2018 19:01:04 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1538618464; cv=none; d=google.com; s=arc-20160816; b=IR71GsyYADQZXnhJqpk/hsiO3DmYQ41ku2LhO0z6GVXZFdNMwxF15X0SJzaQore1O1 QQs2VY3Yh3bLynhDN6Z+EoG17t/YaLOYhcQoc0R42CPP4o5jAALIaioXBiB2uBuQaVn0 9F6vASYwgDndwrl9l96i9ruQtyeQQw3gsqfdJIPfs2DtCmaMtUqFJpbh7s+dNbG3V6xL O5FRN5g/4jpRQ3hNJ6tb+x6xxy3Q/jXAQa+EBdYkpInGwHmLl/6YEZtzvKXw1IcozL4f ZJ9CysR8UcRm/OZIIm6GUs1Zz+L4weCcWoHXgginUPB2ogaIMjoKDzCRqTIgNyWftoXe de0w== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:mime-version:references:message-id :in-reply-to:subject:cc:to:from:date; bh=xalk3bVLGOMvqyyCrRwlK5egeHmIRYWl2EwG0XEhCVk=; b=M9V++QaAGifTvn/Ggd/0W5jcCOS6ePuy4fgDBcVyHr9aOiKFTI8PUv9pF05QLpgMhu pQS8XoBAINwHVgGA33jqGZpkChjxpgNPkxv8K8oYChJzB9is0jhkk8auynvHokkYCce0 IyeBoetNNTC6cUe0AAusCHkt4MJ1to7DbeTb1GOVoxKigN6YEFpbLyAkA6Q9PC03epqP pK5CXL9lCFCU6GJbUwiiweLRVcp3dWKCXoCTN+UFUPED/2nBfcZctrQyvprjk/sov+BD nI1j5+E1GyQuQSOMA6GfCtJ6/C80dfxm7QmuPwXvxmqGPrJKq3bKNxXrNApuIKPoN5ZJ Gf6A== ARC-Authentication-Results: i=1; mx.google.com; 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 Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id q9-v6si3658742pfk.27.2018.10.03.19.00.49; Wed, 03 Oct 2018 19:01:04 -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; 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 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727357AbeJDIvn (ORCPT + 99 others); Thu, 4 Oct 2018 04:51:43 -0400 Received: from kvm5.telegraphics.com.au ([98.124.60.144]:58846 "EHLO kvm5.telegraphics.com.au" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726735AbeJDIvn (ORCPT ); Thu, 4 Oct 2018 04:51:43 -0400 Received: from localhost (localhost.localdomain [127.0.0.1]) by kvm5.telegraphics.com.au (Postfix) with ESMTP id 6788B22B1C; Wed, 3 Oct 2018 22:00:40 -0400 (EDT) Date: Thu, 4 Oct 2018 12:00:38 +1000 (AEST) From: Finn Thain To: Leonardo Bras cc: Robert Richter , lkcamp@lists.libreplanetbr.org, Alexander Shishkin , "James E.J. Bottomley" , Helge Deller , Martin Schwidefsky , Heiko Carstens , Geert Uytterhoeven , linux-kernel , linux-m68k@lists.linux-m68k.org, oprofile-list@lists.sf.net, linux-parisc@vger.kernel.org, linux-s390@vger.kernel.org, James Bottomley Subject: Re: [PATCH v3 0/7] Remove errors building drivers/DRIVERNAME In-Reply-To: Message-ID: References: <20180928020816.11251-1-leobras.c@gmail.com> <20181001075607.GA3776@rric.localdomain> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 3 Oct 2018, Leonardo Bras wrote: > Both ccache and distcc seem very interesting, I will take my time to > study them better as they can solve some situations I face. Thanks for > sharing! > You might also want to check out 'gcc -O0', 'gcc -fopt-info' and 'gcc --help=optimizers' etc to see if you can reduce the compute cost. To reduce IO cost, my build tests always use 'make O=/some/path' where /some/path is on a tmpfs mountpoint. HTH. --