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=-2.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,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 71DEDC433E0 for ; Wed, 24 Jun 2020 14:02:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 516C220781 for ; Wed, 24 Jun 2020 14:02:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1593007332; bh=s+1HAUIY2ezRPN9ikTWdmNZ/f74VfGJEUMykCgxzPp8=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=KpohSHFmiqfNfMQh2Hml2rBCxVS0kC2Co9UOlGTnCR2be1lBmtRcLOJnflKD+oZf2 ay4xHJKKIuXVFeM5W5xL+Vp93ptWvbtJ6Yc1RfI0GjYipG2M0DYLsxBRDUodDeVFia KOygUpofJ7NjcKSWaq0wnzkdfBOfhq63hnjtMF58= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2404056AbgFXOCK (ORCPT ); Wed, 24 Jun 2020 10:02:10 -0400 Received: from mail.kernel.org ([198.145.29.99]:44510 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2403987AbgFXOCJ (ORCPT ); Wed, 24 Jun 2020 10:02:09 -0400 Received: from localhost (fw-tnat.cambridge.arm.com [217.140.96.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 12E0D20724; Wed, 24 Jun 2020 14:02:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1593007329; bh=s+1HAUIY2ezRPN9ikTWdmNZ/f74VfGJEUMykCgxzPp8=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=LvMqMbMXnzntY2cbHHv2NFh1lurxHqBVMlX/8+FwpGRUFpWvaKkUbEXVtSuxRIWqj X1BBeGLwPjStyj1wpXUaK8X0g5WEx5EGLpryhfdCCj+x6QMdLSqX2kNkvHr1N5rEP6 WizhFksWnAeJfSPjiqQ5CqrQI74m++Ml7fv0wO8s= Date: Wed, 24 Jun 2020 15:02:07 +0100 From: Mark Brown To: Andy Shevchenko Cc: Andrzej Hajda , Greg Kroah-Hartman , Bartlomiej Zolnierkiewicz , Marek Szyprowski , "Rafael J. Wysocki" , Linux Kernel Mailing List , linux-arm Mailing List , Russell King - ARM Linux , Neil Armstrong , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Daniel Vetter , "open list:DRM DRIVERS" Subject: Re: [RESEND PATCH v5 1/5] driver core: add probe_err log helper Message-ID: <20200624140207.GE5472@sirena.org.uk> References: <20200624114127.3016-1-a.hajda@samsung.com> <20200624114127.3016-2-a.hajda@samsung.com> <20200624132714.GD5472@sirena.org.uk> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="zjcmjzIkjQU2rmur" Content-Disposition: inline In-Reply-To: X-Cookie: So this is it. We're going to die. User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --zjcmjzIkjQU2rmur Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Wed, Jun 24, 2020 at 04:45:28PM +0300, Andy Shevchenko wrote: > On Wed, Jun 24, 2020 at 4:27 PM Mark Brown wrote: > > As I said down the thread that's not a great pattern since it means that > > probe deferral errors never get displayed and users have a hard time > > figuring out why their driver isn't instantiating. > Don't we have a file in the debugfs to list deferred drivers? Part of what this patch series aims to solve is that that list is not very useful since it doesn't provide any information on how things got deferred which means it's of no use in trying to figure out any problems. > In the case of deferred probes the errors out of it makes users more > miserable in order to look through tons of spam and lose really useful > data in the logs. I seem to never manage to end up using any of the systems which generate excessive deferrals. --zjcmjzIkjQU2rmur Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAl7zXN4ACgkQJNaLcl1U h9CyQwf9GPTQ3AWT49MYS86gakGp3fOn+3DWHi2eBTCNBr7+ZbT6K2LjaeEZdWbq LZqNijKZemXRSHuHANCslwlM29eVG8h/SpYsVVQxdK5k5OlqTDhTkuyfEsEnoF26 AaLhYtMt2MJjbZjxgu2TbKlC+jIwYA9nluB7r2HCm2hOydqWvtd3OR+l74EUwRWn 4CQdokPv6h315Sym12/8bwVOeYExOZcc4HvB0D1XqwzniNUqHI9Bp9q4d1vidjmS AE2vI8rQoD+nKnKUD1BvHzHlJLdyeBuxMbnHypqIFEDeCc4Zvfm60U68qq5umxSe 0CPvHqLPG05cUToWTXrruMFr2Otvjg== =96Vi -----END PGP SIGNATURE----- --zjcmjzIkjQU2rmur--