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=-2.4 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 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 171BAC41514 for ; Thu, 15 Aug 2019 20:27:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DAD6B21721 for ; Thu, 15 Aug 2019 20:27:24 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=ziepe.ca header.i=@ziepe.ca header.b="WDkCTyvJ" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731850AbfHOU1Y (ORCPT ); Thu, 15 Aug 2019 16:27:24 -0400 Received: from mail-qk1-f194.google.com ([209.85.222.194]:33334 "EHLO mail-qk1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728128AbfHOU1X (ORCPT ); Thu, 15 Aug 2019 16:27:23 -0400 Received: by mail-qk1-f194.google.com with SMTP id w18so2205584qki.0 for ; Thu, 15 Aug 2019 13:27:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ziepe.ca; s=google; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=19kUjThyL93UzoFUD+sDXbhnnY/kB4Q4ZpZxPxHnCnk=; b=WDkCTyvJUR9kzGzkv9RhO/TgJXUobdIBDnZhctfrukG1MPh0gO+sRxM9SOc0beAXwp 71DXELXxjcgZUDezoX51IYEcduNfYTWeesRhE25sMvmrNtDRGdCrt1enEmISteraTO0O lmYxf9n7+9HfrzbDV1CWlN5KMnzuye7yZmbHJUXbCAVue3n/XF13L/HHCLVfbebc8dyy wOwif/zXDbh3Clzv2PQj4NmLCizwSU+QGXc/0wbE8bSJqynbOv+SGJd8NXnmGXbl1U78 nftbNS+4wV7MbwnPwm7cnZWNnyj2RIG06/Pk69jMSzWM3pHcSXux3UyoLc3OvczOR8m6 jufg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=19kUjThyL93UzoFUD+sDXbhnnY/kB4Q4ZpZxPxHnCnk=; b=UAWVmlMfdgMIbceIPD0vpXw7NmJSaOm/RZN5EJJ1GRflywSpatiWH7jOwjV2igs6ZK X9OtL9Oyvf3BpCXV6ovNPWYgpIv0pZzhPNRsPM5ghZtpk7yeoiWw6EX9bqvCeTIFTvth 5HKrus57tVScN1rejyqhaJTbdwEI4c8UmH0QXyFrg84qfG600/SRccO/hGaDkYqVybSN cF0VohIfYJQZNSLpAbgUDN5KBzigAITlWDyCXjkj2B97VFapU4WSR8L0fmduGiGQ41CL jRKfsCIvKyuT4v+jkZ7Wb9v9K4e1qvf6lhE4m0i6FAKT7zrkxviEV4eRnNKPnAXNOd21 eXvA== X-Gm-Message-State: APjAAAVgC40N21uZpn0GHIwsgLm83/zbNEDqkMMcOz1mr3jp4y8dzQAC 9f6NQ4Fm1oNtKoV7HbBlmIl3Ew== X-Google-Smtp-Source: APXvYqz+UPGFBXoX6A+UqJ5T9m9LbRff6OjnB4zgWzUGY/zA50mAxWfQ5PnYDlZwMg7P0H6sXMvVqQ== X-Received: by 2002:a37:f902:: with SMTP id l2mr5716280qkj.218.1565900842813; Thu, 15 Aug 2019 13:27:22 -0700 (PDT) Received: from ziepe.ca (hlfxns017vw-156-34-55-100.dhcp-dynamic.fibreop.ns.bellaliant.net. [156.34.55.100]) by smtp.gmail.com with ESMTPSA id t29sm2031508qtt.42.2019.08.15.13.27.22 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Thu, 15 Aug 2019 13:27:22 -0700 (PDT) Received: from jgg by mlx.ziepe.ca with local (Exim 4.90_1) (envelope-from ) id 1hyMLB-0000Tn-Rm; Thu, 15 Aug 2019 17:27:21 -0300 Date: Thu, 15 Aug 2019 17:27:21 -0300 From: Jason Gunthorpe To: Daniel Vetter Cc: Michal Hocko , Feng Tang , Randy Dunlap , Kees Cook , Masahiro Yamada , Peter Zijlstra , Intel Graphics Development , Jann Horn , LKML , DRI Development , Linux MM , =?utf-8?B?SsOpcsO0bWU=?= Glisse , Ingo Molnar , Thomas Gleixner , David Rientjes , Wei Wang , Daniel Vetter , Andrew Morton , Andy Shevchenko , Christian =?utf-8?B?S8O2bmln?= Subject: Re: [Intel-gfx] [PATCH 2/5] kernel.h: Add non_block_start/end() Message-ID: <20190815202721.GV21596@ziepe.ca> References: <20190815132127.GI9477@dhcp22.suse.cz> <20190815141219.GF21596@ziepe.ca> <20190815155950.GN9477@dhcp22.suse.cz> <20190815165631.GK21596@ziepe.ca> <20190815174207.GR9477@dhcp22.suse.cz> <20190815182448.GP21596@ziepe.ca> <20190815190525.GS9477@dhcp22.suse.cz> <20190815191810.GR21596@ziepe.ca> <20190815193526.GT9477@dhcp22.suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.9.4 (2018-02-28) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Aug 15, 2019 at 10:16:43PM +0200, Daniel Vetter wrote: > So if someone can explain to me how that works with lockdep I can of > course implement it. But afaics that doesn't exist (I tried to explain > that somewhere else already), and I'm no really looking forward to > hacking also on lockdep for this little series. Hmm, kind of looks like it is done by calling preempt_disable() Probably the debug option is CONFIG_DEBUG_PREEMPT, not lockdep? Jason