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=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS 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 0CF8FC6778C for ; Fri, 6 Jul 2018 06:08:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B826120849 for ; Fri, 6 Jul 2018 06:08:35 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B826120849 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lip6.fr Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754155AbeGFGIQ (ORCPT ); Fri, 6 Jul 2018 02:08:16 -0400 Received: from mail3-relais-sop.national.inria.fr ([192.134.164.104]:12289 "EHLO mail3-relais-sop.national.inria.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933395AbeGFFtU (ORCPT ); Fri, 6 Jul 2018 01:49:20 -0400 X-IronPort-AV: E=Sophos;i="5.51,314,1526335200"; d="scan'208";a="272083389" Received: from abo-214-111-68.mrs.modulonet.fr (HELO [192.168.0.15]) ([85.68.111.214]) by mail3-relais-sop.national.inria.fr with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 06 Jul 2018 07:49:18 +0200 Date: Fri, 6 Jul 2018 07:49:18 +0200 (CEST) From: Julia Lawall X-X-Sender: jll@hadrien To: Dan Carpenter cc: Joe Perches , Prakruthi Deepak Heragu , apw@canonical.com, Julia Lawall , Dan Carpenter , linux-kernel@vger.kernel.org, ckadabi@codeaurora.org, tsoni@codeaurora.org, bryanh@codeaurora.org, Israel Schlesinger , Stepan Moskovchenko , baijiaju1990@gmail.com Subject: Re: [PATCH] checkpatch: Add warnings for use of mdelay() In-Reply-To: <20180705081953.pmvpmtzm273eb6yk@mwanda> Message-ID: References: <1530728333-31590-1-git-send-email-pheragu@codeaurora.org> <173cc189627e0d6618b535fcd1ce6a4c90ce2ad0.camel@perches.com> <20180705081953.pmvpmtzm273eb6yk@mwanda> User-Agent: Alpine 2.20 (DEB 67 2015-01-07) 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 Thu, 5 Jul 2018, Dan Carpenter wrote: > Neither Smatch nor Coccinelle do a good job tracking when you're in > atomic context. I've wanted to add this to Smatch but even then it > would be to warn that "We're holding a spinlock so we can't sleep". > It's trickier to say for sure when you're not holding a lock... Jia-Ju Bai is working on this. The tool is available on github. It's still being improved, though, so perhaps it's not yet ready for eg 0-day inclusion. He can give more details. julia