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=-0.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no 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 C0D37C2D0F7 for ; Tue, 12 May 2020 20:06:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9AB6B20753 for ; Tue, 12 May 2020 20:06:48 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="B1dEFzwl" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731152AbgELUGr (ORCPT ); Tue, 12 May 2020 16:06:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34196 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725938AbgELUGr (ORCPT ); Tue, 12 May 2020 16:06:47 -0400 Received: from mail-io1-xd41.google.com (mail-io1-xd41.google.com [IPv6:2607:f8b0:4864:20::d41]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0E6C5C061A0C; Tue, 12 May 2020 13:06:47 -0700 (PDT) Received: by mail-io1-xd41.google.com with SMTP id s10so15518739iog.7; Tue, 12 May 2020 13:06:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:reply-to:from:date:message-id :subject:to:cc; bh=5gYRNxsl+AJhtF04Scdhgt92FgaaH0tr9cW3OfY8ghg=; b=B1dEFzwlpmVU422p3FMoQ/2Agz+JD5HFnJJsznQT+Z6BVKUFOD5nzaX4Ej3qjl6jYg eGzz4yRKzXJFTRYRogi/CoJ+OQ+mHWn7sIIW4N+TeaBqwx3d21TOo9lAMPfb7h9Lk28o 0aUs8bp90sNxhLpRZ4wBvZboDtXnRKvALd2evsPxeH3+K8eja74l+rRaXUqimN8n7RoV 10W9YoewtKR/WVS4Qlq5wT2kZyrc94NIqbYRVGDz4jOTU97moeAOMFb+D5KCag4FzN09 soOTCuTxN6OqY8h3z6+AJrphAmn2UlSAnXXqIX3R4Zg+ZhBOAMJx/+6ZFdQf1NydboQK EDdw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:reply-to :from:date:message-id:subject:to:cc; bh=5gYRNxsl+AJhtF04Scdhgt92FgaaH0tr9cW3OfY8ghg=; b=Bq1+Flr+JGW5s4I6Yh0MYbAlDL+AHpMkqJw4hbz4d4VWN/M7IAyXVhYRiBhklH8mYc 0UMdZ6o17TUqwZ+3bAaZftS0kE2j8z+VuIK//aIZaT6d2DYNPZwBmmo/QeNqxlIw2w9l t6XwtVrxb3kkTH37uuHpfClFpciwIn05U8VEGKsw+8kZtrQx1cJ/vys+AgOiGJ1nsiec xb5161j/7uE5lFUVuGF89lVoURMPtOmo5zVt2OIrGliFtc13bZc7x7SmXs7nC383T2Kx /wVVKzXP8kvDiNvQGCgYYPqaGaD3UWJo8bzUUwkKRA0E0840JeTjNS4bx77epd+nCXwa sN4Q== X-Gm-Message-State: AGi0PubefBPY63/B9Mt1Bzz21ZSGqdBNlpsJJhBa9N5Sfu+mZvhjS4ob qJWU4GAbU7MPpoHeaM674Gs6bEJdO95ydfVDyY4= X-Google-Smtp-Source: APiQypI5Ez6wBRTtNiR23CWKmDd9v/YKydLRgNpwuOsa0fEFEnN+OfJIe5g9k7ceLDoqDWAa1KQhb2WwbUuKYGrID9Q= X-Received: by 2002:a6b:7d4a:: with SMTP id d10mr22667811ioq.70.1589314006427; Tue, 12 May 2020 13:06:46 -0700 (PDT) MIME-Version: 1.0 References: <20200504031340.7103-1-nick.desaulniers@gmail.com> <20200505004738.ew2lcp27c2n4jqia@google.com> <20200512200114.64vo5lbl7wk2tzxk@google.com> In-Reply-To: <20200512200114.64vo5lbl7wk2tzxk@google.com> Reply-To: sedat.dilek@gmail.com From: Sedat Dilek Date: Tue, 12 May 2020 22:06:35 +0200 Message-ID: Subject: Re: [PATCH] Makefile: support compressed debug info To: Fangrui Song Cc: Nick Desaulniers , Masahiro Yamada , Nick Desaulniers , Michal Marek , Andrew Morton , Changbin Du , Randy Dunlap , Krzysztof Kozlowski , Linux Kbuild mailing list , Linux Kernel Mailing List , Clang-Built-Linux ML Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, May 12, 2020 at 10:01 PM Fangrui Song wrote: > > On 2020-05-12, Nick Desaulniers wrote: ... > >I have a patch series that enables dwarf5 support in the kernel that > >I'm working up to. I wanted to send this first. Both roughly reduce > >the debug info size by 20% each, though I haven't measured them > >together, yet. Requires ToT binutils because there have been many > >fixes from reports of mine recently. > > This will be awesome! I also heard that enabling DWARF v5 for our object > files can easily make debug info size smaller by 20%. Glad that the > kernel can benefit it as well:) Please CC me on your pathcset - 20% smaller - I flip out. - Sedat -