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[116.206.28.23]) by smtp.gmail.com with ESMTPSA id p10-20020a170902e74a00b0016c0080df84sm5115147plf.254.2022.07.16.02.33.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 16 Jul 2022 02:33:38 -0700 (PDT) Received: by debian.me (Postfix, from userid 1000) id 3674910383F; Sat, 16 Jul 2022 16:33:33 +0700 (WIB) From: Bagas Sanjaya To: linux-doc@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Masahiro Yamada , Michal Marek , Nick Desaulniers , Jonathan Corbet , Martin Liska , Andi Kleen , Jiri Slaby , linux-kbuild@vger.kernel.org, Bagas Sanjaya , kernel test robot Subject: [PATCH 1/4] Documentation: lto: add blank line padding before single requirement list Date: Sat, 16 Jul 2022 16:32:47 +0700 Message-Id: <20220716093249.19326-2-bagasdotme@gmail.com> X-Mailer: git-send-email 2.37.1 In-Reply-To: <20220716093249.19326-1-bagasdotme@gmail.com> References: <20220716093249.19326-1-bagasdotme@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-kbuild@vger.kernel.org kernel test robot reported a warning on LTO requirements list: Documentation/kbuild/lto-build.rst:40: WARNING: Bullet list ends without a blank line; unexpected unindent. The warning is caused by missing padding between the subheading and the list. Add blank line padding to fix the warning. Link: https://lore.kernel.org/linux-doc/202207161100.lCdR6Unx-lkp@intel.com/ Fixes: 0350b4dd55922f ("Kbuild, lto: Add Link Time Optimization support") Reported-by: kernel test robot Signed-off-by: Bagas Sanjaya --- Documentation/kbuild/lto-build.rst | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/Documentation/kbuild/lto-build.rst b/Documentation/kbuild/lto-build.rst index e8a0f149e8ceaf..39cbdb12295051 100644 --- a/Documentation/kbuild/lto-build.rst +++ b/Documentation/kbuild/lto-build.rst @@ -36,9 +36,10 @@ the compiler version. Requirements: ------------- + - Enough memory: 4GB for a standard build, more for allyesconfig -The peak memory usage happens single threaded (when lto-wpa merges types), -so dialing back -j options will not help much. + The peak memory usage happens single threaded (when lto-wpa merges types), + so dialing back -j options will not help much. A 32bit hosted compiler is unlikely to work due to the memory requirements. You can however build a kernel targeted at 32bit on a 64bit host. From patchwork Sat Jul 16 09:32:48 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bagas Sanjaya X-Patchwork-Id: 12920026 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B5ACECCA483 for ; Sat, 16 Jul 2022 09:33:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232088AbiGPJdm (ORCPT ); Sat, 16 Jul 2022 05:33:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54364 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231129AbiGPJdk (ORCPT ); Sat, 16 Jul 2022 05:33:40 -0400 Received: from mail-pj1-x102a.google.com (mail-pj1-x102a.google.com [IPv6:2607:f8b0:4864:20::102a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B746326AEF; Sat, 16 Jul 2022 02:33:39 -0700 (PDT) Received: by mail-pj1-x102a.google.com with SMTP id y14-20020a17090a644e00b001ef775f7118so13665984pjm.2; Sat, 16 Jul 2022 02:33:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=YcGMxSsIcN9kL146zuaiczusg14msCwCUfXlQG72sVI=; b=NGLeXJduQSC7uUrFYkfvAPJXznPSlYlPc0hXIW/ZDq7Aa5SpDQNX7MzaY6Jdr14Eac FpylrvJk+kGoCzriN1Iwk2oWATCqFQ9SfSgSXlxRSmRfquVS70PY3OxPCOcpebEqRIOs i+fa6gL9v4jt2YYq+0Rr4tDxnS8s03bi2cS8JSAUvh7AOV5QMe0Hc7CgEN4+66kNELEd PFXnJMlEPk0cFYoMhlo6ilztkL/8aBebrV3CWC4CzmV/oliGF24RU+5Ss7bgDkBvj+Zc rXeT1yAibSrzWqpJD/kqdT+vEpKC1OuZzKmJkmJ+2W68BLikxQdTlSb1u6GZS+XlXyE+ ohMQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=YcGMxSsIcN9kL146zuaiczusg14msCwCUfXlQG72sVI=; b=NiyjqshE5JFSf4s2TdwoxqnYks25ozGt4x0P2CzHG2sfr3x7PaN7vJxP3bnERIb5AB 6z7pnTqm9qHyVv8xeK/maqEguJP5uRpeRqBFwOHIHmV8nY52svRdnbfV6VcDOAdHwm2G Z4TFNuo2fTtUw2Y8FVcT5cB/9wcqD3WmCQehNw7pwhwEohQuJ9II9YUFAMtuUrdjmPHj QTWWANiJnJGqp772cOn8WkDXibLKjm6tRk9KsBKE7tNcUbHMfr+j7zP8cCQwMnvQACZI 8bT72aoV/2+CfrFm6+nwTrXBvwovT0GsDsvNlWNRg5ak5o2R4oTzLK/8Hs2TTb9FwbTq 30+g== X-Gm-Message-State: AJIora9XTNLLEnTcJX8XW7OIWpmxPztcuG8QunlEzHrDKR6Qs6bzJwUg RkZsDa6Y5x3W/lcNLJZm8hg= X-Google-Smtp-Source: AGRyM1sw20g7aXB3IjmaVmevRm9S5IvX5TlR+DA2DWp3H00fxSQ4LgwWkL7panc5EVUBCB7Z5S7/Uw== X-Received: by 2002:a17:902:8e84:b0:16c:dfce:f579 with SMTP id bg4-20020a1709028e8400b0016cdfcef579mr943549plb.170.1657964019154; Sat, 16 Jul 2022 02:33:39 -0700 (PDT) Received: from debian.me (subs32-116-206-28-23.three.co.id. [116.206.28.23]) by smtp.gmail.com with ESMTPSA id y17-20020aa79e11000000b0052ab5d2d398sm5331521pfq.47.2022.07.16.02.33.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 16 Jul 2022 02:33:38 -0700 (PDT) Received: by debian.me (Postfix, from userid 1000) id 794FE103853; Sat, 16 Jul 2022 16:33:33 +0700 (WIB) From: Bagas Sanjaya To: linux-doc@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Masahiro Yamada , Michal Marek , Nick Desaulniers , Jonathan Corbet , Martin Liska , Andi Kleen , Jiri Slaby , linux-kbuild@vger.kernel.org, Bagas Sanjaya Subject: [PATCH 2/4] Documentation: lto: use bullet list for FAQ Date: Sat, 16 Jul 2022 16:32:48 +0700 Message-Id: <20220716093249.19326-3-bagasdotme@gmail.com> X-Mailer: git-send-email 2.37.1 In-Reply-To: <20220716093249.19326-1-bagasdotme@gmail.com> References: <20220716093249.19326-1-bagasdotme@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-kbuild@vger.kernel.org The only FAQ item is rendered as a continuous paragraph, although it is formatted as Q&A field pair. Use bullet list instead, as in other FAQs in kernel documentation. Signed-off-by: Bagas Sanjaya --- Documentation/kbuild/lto-build.rst | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/Documentation/kbuild/lto-build.rst b/Documentation/kbuild/lto-build.rst index 39cbdb12295051..9e3e14042dda4c 100644 --- a/Documentation/kbuild/lto-build.rst +++ b/Documentation/kbuild/lto-build.rst @@ -46,10 +46,12 @@ You can however build a kernel targeted at 32bit on a 64bit host. FAQs: ----- -Q: I get a section type attribute conflict -A: Usually because of someone doing -const __initdata (should be const __initconst) or const __read_mostly -(should be just const). Check both symbols reported by gcc. + +* I get a section type attribute conflict + + Usually because of someone doing const __initdata (should be + const __initconst) or const __read_mostly (should be just const). Check + both symbols reported by gcc. References: ----------- From patchwork Sat Jul 16 09:32:49 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bagas Sanjaya X-Patchwork-Id: 12920028 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0A8D6CCA488 for ; Sat, 16 Jul 2022 09:33:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232094AbiGPJdp (ORCPT ); Sat, 16 Jul 2022 05:33:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54520 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232100AbiGPJdo (ORCPT ); Sat, 16 Jul 2022 05:33:44 -0400 Received: from mail-pj1-x1031.google.com (mail-pj1-x1031.google.com [IPv6:2607:f8b0:4864:20::1031]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 49AF4182; Sat, 16 Jul 2022 02:33:40 -0700 (PDT) Received: by mail-pj1-x1031.google.com with SMTP id x18-20020a17090a8a9200b001ef83b332f5so13722442pjn.0; Sat, 16 Jul 2022 02:33:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=xhq++96SwqP8iCLJj1mxjf4nsafc6aa4I9geuOUsTYc=; b=arQXmVNjfmYBDpNRP5PRNWJoI8kfTbc5ypG0ZQEZDHfwB8FX3FTfhpHVNwRCERCZdR kK7A7fU20oJR6WneJQb8VqwOa5cffhmvzxj+qfyb0+JLNVGJRZ0XsZmX1SKtv7L7V+n2 vtdgpsw3g/PFkNb7W0d406eVRYjY2ouuxnzMsy6pI8+7vEU+56+jTMxoNr1FeNQqfpWP fKfyr35Oe78cXWxxXxXngBPY6eRotbwcLmElAhiA3mxvVgYX2d4bbPJw2JbYsUyQEYvJ s/iRQ7ilUZk1qwHgfsGrRrkcknx/yJrF7PLiiKA/57v1TeNeUOoM+bIrj2a8yJ/DovOW Sayg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=xhq++96SwqP8iCLJj1mxjf4nsafc6aa4I9geuOUsTYc=; b=V36ucEBkKQcSuMJGAh+/OnnOBEEHjA5NSOVbxaoV5sWbMO8m+MWg4sxQZQraw5p6j/ NwHjEsRRxrfw5Dcmt5tm81r2XHbdBSoGvE5gWi5GWzjuF5SSnJvUSOPkhS5EtoiPBZVv KMPRbcww8T2C6ufEEvoosXb42CgBSg3S9W3ahyVo/AVw9+BXDleYBVGfl7+X79yqrUXb zL8R5q2WTDpFr+8UXALvnmVw2ZcoPUMglMelWZE96P5VAC+T5VEixsSLmBj68P3ZCwtn 4NzQ+/U4aatBvFKMOZkpJ+6AMrNXjjGDLbmnvrTa4/4PND9wKIoCsXGC9XJhyxocW8uh cYbg== X-Gm-Message-State: AJIora/99K1BZl15jewVC/4U83aqdmeXFWSJmGgzUrFPwNKJOArWXCTr 9vpvHCZamwJtq6hSS23HvJE= X-Google-Smtp-Source: AGRyM1sCsMunfbPOuymvkXTYD/IzPE6crrGnwwbagMZeRKOYiRRbdJW7sSMgIpbhgwrbS+WipRyRqg== X-Received: by 2002:a17:902:eec2:b0:16c:9837:cd4 with SMTP id h2-20020a170902eec200b0016c98370cd4mr15342704plb.132.1657964019824; Sat, 16 Jul 2022 02:33:39 -0700 (PDT) Received: from debian.me (subs32-116-206-28-23.three.co.id. [116.206.28.23]) by smtp.gmail.com with ESMTPSA id 199-20020a6218d0000000b0052abc2438f1sm5352747pfy.55.2022.07.16.02.33.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 16 Jul 2022 02:33:38 -0700 (PDT) Received: by debian.me (Postfix, from userid 1000) id 60BCD103840; Sat, 16 Jul 2022 16:33:33 +0700 (WIB) From: Bagas Sanjaya To: linux-doc@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Masahiro Yamada , Michal Marek , Nick Desaulniers , Jonathan Corbet , Martin Liska , Andi Kleen , Jiri Slaby , linux-kbuild@vger.kernel.org, Bagas Sanjaya Subject: [PATCH 3/4] Documentation: lto: use bullet lists for external link references list Date: Sat, 16 Jul 2022 16:32:49 +0700 Message-Id: <20220716093249.19326-4-bagasdotme@gmail.com> X-Mailer: git-send-email 2.37.1 In-Reply-To: <20220716093249.19326-1-bagasdotme@gmail.com> References: <20220716093249.19326-1-bagasdotme@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-kbuild@vger.kernel.org Similar to the FAQ, use bullet lists in References section since it contains list of external reference links. Signed-off-by: Bagas Sanjaya --- Documentation/kbuild/lto-build.rst | 21 ++++++++++++--------- 1 file changed, 12 insertions(+), 9 deletions(-) diff --git a/Documentation/kbuild/lto-build.rst b/Documentation/kbuild/lto-build.rst index 9e3e14042dda4c..3fb17342e72fd6 100644 --- a/Documentation/kbuild/lto-build.rst +++ b/Documentation/kbuild/lto-build.rst @@ -56,17 +56,20 @@ FAQs: References: ----------- -Presentation on Kernel LTO -(note, performance numbers/details totally outdated.) -http://halobates.de/kernel-lto.pdf +* Presentation on Kernel LTO + (note, performance numbers/details totally outdated.) -Generic gcc LTO: -http://www.ucw.cz/~hubicka/slides/labs2013.pdf -http://www.hipeac.net/system/files/barcelona.pdf + http://halobates.de/kernel-lto.pdf -Somewhat outdated too: -http://gcc.gnu.org/projects/lto/lto.pdf -http://gcc.gnu.org/projects/lto/whopr.pdf +* Generic gcc LTO: + + * http://www.ucw.cz/~hubicka/slides/labs2013.pdf + * http://www.hipeac.net/system/files/barcelona.pdf + +* Somewhat outdated too (from GCC site): + + * http://gcc.gnu.org/projects/lto/lto.pdf + * http://gcc.gnu.org/projects/lto/whopr.pdf Happy Link-Time-Optimizing! 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[116.206.28.23]) by smtp.gmail.com with ESMTPSA id c5-20020a170903234500b0016be8da658fsm5057280plh.130.2022.07.16.02.33.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 16 Jul 2022 02:33:38 -0700 (PDT) Received: by debian.me (Postfix, from userid 1000) id 8C956103844; Sat, 16 Jul 2022 16:33:33 +0700 (WIB) From: Bagas Sanjaya To: linux-doc@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Masahiro Yamada , Michal Marek , Nick Desaulniers , Jonathan Corbet , Martin Liska , Andi Kleen , Jiri Slaby , linux-kbuild@vger.kernel.org, Bagas Sanjaya , kernel test robot Subject: [PATCH 4/4] Documentation: lto: add LTO documentation to toc index Date: Sat, 16 Jul 2022 16:32:50 +0700 Message-Id: <20220716093249.19326-5-bagasdotme@gmail.com> X-Mailer: git-send-email 2.37.1 In-Reply-To: <20220716093249.19326-1-bagasdotme@gmail.com> References: <20220716093249.19326-1-bagasdotme@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-kbuild@vger.kernel.org kernel test robot reported toctree warning: Documentation/kbuild/lto-build.rst: WARNING: document isn't included in any toctree Add LTO documentation (lto-build.rst) to kbuild table of contents. Link: https://lore.kernel.org/linux-doc/202207161100.lCdR6Unx-lkp@intel.com/ Fixes: 0350b4dd55922f ("Kbuild, lto: Add Link Time Optimization support") Reported-by: kernel test robot Signed-off-by: Bagas Sanjaya --- Documentation/kbuild/index.rst | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Documentation/kbuild/index.rst b/Documentation/kbuild/index.rst index cee2f99f734b5a..1937eee7c43705 100644 --- a/Documentation/kbuild/index.rst +++ b/Documentation/kbuild/index.rst @@ -22,6 +22,8 @@ Kernel Build System gcc-plugins llvm + lto-build + .. only:: subproject and html Indices