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=-17.4 required=3.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT, USER_IN_DEF_DKIM_WL autolearn=ham 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 3E593C35247 for ; Tue, 4 Feb 2020 17:21:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 17B582082E for ; Tue, 4 Feb 2020 17:21:43 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="kOwoRCDo" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727557AbgBDRVm (ORCPT ); Tue, 4 Feb 2020 12:21:42 -0500 Received: from mail-wr1-f73.google.com ([209.85.221.73]:36734 "EHLO mail-wr1-f73.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727511AbgBDRVk (ORCPT ); Tue, 4 Feb 2020 12:21:40 -0500 Received: by mail-wr1-f73.google.com with SMTP id t6so7532611wru.3 for ; Tue, 04 Feb 2020 09:21:38 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=/EdK19HAv7xXcKBEepm7DrM633ZSHTkUWpJ8Lb/HPBw=; b=kOwoRCDox+ZECsE9pHIMr4EtoDXQDF2fOG9dbo51B1gVx4HvOxcJzovUAJmDLZzI34 bwER33zSb7DyCkTbovvrhcBW1gIL0m47qqTCHv4NSoZ/bezqWs739WfHpLVEflvUPo2s TkoMX+fNJvD6n2dVnr9mzFO4hCZOboqDtekopkSxnOtg4sbkYSax8W6S89lTZraabHqU YoeX1EjBo/KrHCD6B4cJaROKqYUREBBclEG9ONHuIfbfnpMN2xPUEZLapa4ANI6UiRso yKSjKJ+ulMmr2ZsNrLwklRwoeXF7//JutJnaB0o6OB1xtvy7Lw51B3jLHk2fQ1WB6Msk xHbA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=/EdK19HAv7xXcKBEepm7DrM633ZSHTkUWpJ8Lb/HPBw=; b=MjYxtOWnqcnOV+QGOorgy7d/QJKsjhWFcSSoAgnK53YdGc3S9Vb2khulC9wdp/jycz 7zEp2PJlnYSX0PllsStkUkth8Tj3FF9/anmCPrFfKdKDNJjKXCmMW17RDC52YtNZz+jZ hqfqtEbVumCb38kZs9i4uAfwBuLRYv6zSyN6OaSo8WrEHmDrYBPDxGDttgv5BvTSu8Ax ShT3nEql5yh+ZXSkdv3GfnFk40qPkmu74mQ6ayB0TLaiCqg1iMyFaXlHT1GvGsF3fdyT kTClXpMcE9JFog7mS2J2/ApovYpZLJbIc3Ge5SCMWtTDlMoPdj6lDC5fdL/fNBmv8wvU ntBw== X-Gm-Message-State: APjAAAV91OCxCDg1FwET/jS4UJv9UsxuTkYhLQfwbM35VsLpDXiEjSNC wVfJ/LpCwgGc1fAsqVUHxzuZYjadVA== X-Google-Smtp-Source: APXvYqzUesV9YnehhpYzBRc3hWKydie834EHQBvyumDCHzHA5mzK80My2hHFPD1lL94EKDQMnxHIw5OzrQ== X-Received: by 2002:adf:9b87:: with SMTP id d7mr24109403wrc.64.1580836897715; Tue, 04 Feb 2020 09:21:37 -0800 (PST) Date: Tue, 4 Feb 2020 18:21:12 +0100 In-Reply-To: <20200204172112.234455-1-elver@google.com> Message-Id: <20200204172112.234455-3-elver@google.com> Mime-Version: 1.0 References: <20200204172112.234455-1-elver@google.com> X-Mailer: git-send-email 2.25.0.341.g760bfbb309-goog Subject: [PATCH v2 3/3] kcsan: Cleanup of main KCSAN Kconfig option From: Marco Elver To: elver@google.com Cc: paulmck@kernel.org, andreyknvl@google.com, glider@google.com, dvyukov@google.com, kasan-dev@googlegroups.com, linux-kernel@vger.kernel.org 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 This patch cleans up the rules of the 'KCSAN' Kconfig option by: 1. implicitly selecting 'STACKTRACE' instead of depending on it; 2. depending on DEBUG_KERNEL, to avoid accidentally turning KCSAN on if the kernel is not meant to be a debug kernel; 3. updating the short and long summaries. Signed-off-by: Marco Elver --- lib/Kconfig.kcsan | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) diff --git a/lib/Kconfig.kcsan b/lib/Kconfig.kcsan index 020ac63e43617..9785bbf9a1d11 100644 --- a/lib/Kconfig.kcsan +++ b/lib/Kconfig.kcsan @@ -4,12 +4,15 @@ config HAVE_ARCH_KCSAN bool menuconfig KCSAN - bool "KCSAN: watchpoint-based dynamic data race detector" - depends on HAVE_ARCH_KCSAN && !KASAN && STACKTRACE + bool "KCSAN: dynamic data race detector" + depends on HAVE_ARCH_KCSAN && DEBUG_KERNEL && !KASAN + select STACKTRACE help - Kernel Concurrency Sanitizer is a dynamic data race detector, which - uses a watchpoint-based sampling approach to detect races. See - for more details. + The Kernel Concurrency Sanitizer (KCSAN) is a dynamic data race + detector, which relies on compile-time instrumentation, and uses a + watchpoint-based sampling approach to detect data races. + + See for more details. if KCSAN -- 2.25.0.341.g760bfbb309-goog