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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B5E32C433EF for ; Wed, 6 Apr 2022 20:12:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232533AbiDFUOv (ORCPT ); Wed, 6 Apr 2022 16:14:51 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58016 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236999AbiDFUNz (ORCPT ); Wed, 6 Apr 2022 16:13:55 -0400 Received: from galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7E8DC506EE; Wed, 6 Apr 2022 11:01:09 -0700 (PDT) Date: Wed, 06 Apr 2022 18:01:04 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1649268067; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=IndriNrjjKue7jTMRIVbOa6aEXgiAJs1mmKTKQU5o2k=; b=n8LIvLG63fRvoYpG/xxua2e9y5DhIF/6fPG3gYpNwAP3J30WSQNKx0LECysc40M3oYfRzY yEG//fH5BZvVv5CoKBiBpkPnmSmOzBmVPBK8RHhtwCySoserHElFnHn5CWvB1/ZSLrAVr4 qRE+voPF6nE/O8QTOLnAyCrhN3WQu0SmzscV8GcASLBlVVDDUclGR1FZLI0yO1fdaNQs+1 SrvNBfLqJtCcdxabccSWCqR6ihf/PkwizDvdhZBRFHu8wSJ3El4byEKRBe5MJdRkpiNRSm xLmyZFG0ybEchdjl3DwVyByWcjHpqDut7ih453x4aol9yktuhNHtztU1NK8Tfg== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1649268067; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=IndriNrjjKue7jTMRIVbOa6aEXgiAJs1mmKTKQU5o2k=; b=ZAxYhEcigm5Sz65+61+nzBTrSsIfhWcIqJ6/Dhi7BNkxlk1HGqTkHyT9Js9Y1Cco8pnktV svPF6NIKoT0lPhDA== From: "tip-bot2 for Dave Hansen" Sender: tip-bot2@linutronix.de Reply-to: linux-kernel@vger.kernel.org To: linux-tip-commits@vger.kernel.org Subject: [tip: x86/build] x86/configs: Add x86 debugging Kconfig fragment plus docs Cc: Dave Hansen , Borislav Petkov , x86@kernel.org, linux-kernel@vger.kernel.org In-Reply-To: <20220331175728.299103A0@davehans-spike.ostc.intel.com> References: <20220331175728.299103A0@davehans-spike.ostc.intel.com> MIME-Version: 1.0 Message-ID: <164926806495.389.2039548073927168895.tip-bot2@tip-bot2> Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The following commit has been merged into the x86/build branch of tip: Commit-ID: 9b5a7f4a2a8dcda461f9c7a6671150f4a8a902e8 Gitweb: https://git.kernel.org/tip/9b5a7f4a2a8dcda461f9c7a6671150f4a8a902e8 Author: Dave Hansen AuthorDate: Thu, 31 Mar 2022 10:57:28 -07:00 Committer: Borislav Petkov CommitterDate: Wed, 06 Apr 2022 19:56:29 +02:00 x86/configs: Add x86 debugging Kconfig fragment plus docs The kernel has a wide variety of debugging options to help catch and squash bugs. However, new debugging is added all the time and the existing options can be hard to find. Add a Kconfig fragment with the debugging options which tip maintainers expect to be used to test contributions. This should make it easier for contributors to test their code and find issues before submission. [ bp: Add to "make help" output, fix DEBUG_INFO selection as pointed out by Nathan Chancellor . ] Signed-off-by: Dave Hansen Signed-off-by: Borislav Petkov Link: https://lore.kernel.org/r/20220331175728.299103A0@davehans-spike.ostc.intel.com --- Documentation/process/maintainer-tip.rst | 14 ++++++++++++++ arch/x86/Makefile | 1 + kernel/configs/x86_debug.config | 18 ++++++++++++++++++ 3 files changed, 33 insertions(+) create mode 100644 kernel/configs/x86_debug.config diff --git a/Documentation/process/maintainer-tip.rst b/Documentation/process/maintainer-tip.rst index c74f4a8..572a328 100644 --- a/Documentation/process/maintainer-tip.rst +++ b/Documentation/process/maintainer-tip.rst @@ -437,6 +437,20 @@ in a private repository which allows interested people to easily pull the series for testing. The usual way to offer this is a git URL in the cover letter of the patch series. +Testing +^^^^^^^ + +Code should be tested before submitting to the tip maintainers. Anything +other than minor changes should be built, booted and tested with +comprehensive (and heavyweight) kernel debugging options enabled. + +These debugging options can be found in kernel/configs/x86_debug.config +and can be added to an existing kernel config by running: + + make x86_debug.config + +Some of these options are x86-specific and can be left out when testing +on other architectures. Coding style notes ------------------ diff --git a/arch/x86/Makefile b/arch/x86/Makefile index 63d50f6..1abd7cc 100644 --- a/arch/x86/Makefile +++ b/arch/x86/Makefile @@ -313,5 +313,6 @@ define archhelp echo '' echo ' kvm_guest.config - Enable Kconfig items for running this kernel as a KVM guest' echo ' xen.config - Enable Kconfig items for running this kernel as a Xen guest' + echo ' x86_debug.config - Enable tip tree debugging options for testing' endef diff --git a/kernel/configs/x86_debug.config b/kernel/configs/x86_debug.config new file mode 100644 index 0000000..dcd86f3 --- /dev/null +++ b/kernel/configs/x86_debug.config @@ -0,0 +1,18 @@ +CONFIG_X86_DEBUG_FPU=y +CONFIG_LOCK_STAT=y +CONFIG_DEBUG_VM=y +CONFIG_DEBUG_VM_VMACACHE=y +CONFIG_DEBUG_VM_RB=y +CONFIG_DEBUG_SLAB=y +CONFIG_DEBUG_KMEMLEAK=y +CONFIG_DEBUG_PAGEALLOC=y +CONFIG_SLUB_DEBUG_ON=y +CONFIG_KMEMCHECK=y +CONFIG_DEBUG_OBJECTS=y +CONFIG_DEBUG_OBJECTS_ENABLE_DEFAULT=1 +CONFIG_GCOV_KERNEL=y +CONFIG_LOCKDEP=y +CONFIG_PROVE_LOCKING=y +CONFIG_SCHEDSTATS=y +CONFIG_VMLINUX_VALIDATION=y +CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT=y