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=-2.5 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_SANE_2 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 B224EC433DF for ; Wed, 1 Jul 2020 14:52:51 +0000 (UTC) Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 3BFBC206BE for ; Wed, 1 Jul 2020 14:52:51 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=alsa-project.org header.i=@alsa-project.org header.b="Ff5VkT+8" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3BFBC206BE Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=shiny.it Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=alsa-devel-bounces@alsa-project.org Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id A309A167E; Wed, 1 Jul 2020 16:51:59 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz A309A167E DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1593615169; bh=Dq5whM44wnWttBYmnnVvlJ7we8oy330ugPRIjJO/KzU=; h=Date:From:To:Subject:In-Reply-To:References:Cc:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=Ff5VkT+81vl9Ax7NOetmrd8nT5qwnNXBuWxdCp8szVACTnBrGf572F2Gi6mHx6Qk2 C3b2Ri4eNp9tFeHX7z61aLEaMMybKtomVIF0ga0PveeaKtdGb14LXRz7//BrxsxN0r UJiz1UiKV1P7zgiO/3rB+VrEUfosxjahVSWu6zLU= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 21DB4F8020C; Wed, 1 Jul 2020 16:51:59 +0200 (CEST) Received: by alsa1.perex.cz (Postfix, from userid 50401) id 6B8F3F80217; Wed, 1 Jul 2020 16:51:57 +0200 (CEST) Received: from denise.shiny.it (denise.shiny.it [185.206.84.1]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id EBE14F801D8 for ; Wed, 1 Jul 2020 16:51:50 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz EBE14F801D8 Received: from wc1 (localhost [127.0.0.1]) by denise.shiny.it (8.15.2/8.15.2) with ESMTP id 061Epi5m022388; Wed, 1 Jul 2020 16:51:45 +0200 Date: Wed, 1 Jul 2020 16:51:51 +0200 From: Giuliano Pochini To: Mark Hills Subject: Re: [PATCH 3/3] echoaudio: Address bugs in the interrupt handling Message-ID: <20200701165035.2be3cb2e@wc1> In-Reply-To: <2007011320590.17595@stax.localdomain> References: <2006161409060.30751@stax.localdomain> <20200616131743.4793-3-mark@xwax.org> <20200617000134.60c5e2b5@wc1> <2006171158070.2561@stax.localdomain> <20200619215655.07b6f3ed@wc1> <2006192200200.12984@tamla.localdomain> <20200629000139.0212fa11@wc1> <2007011320590.17595@stax.localdomain> X-Mailer: Claws Mail 3.16.0 (GTK+ 2.24.32; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: Takashi Iwai , alsa-devel@alsa-project.org X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" On Wed, 1 Jul 2020 13:25:07 +0100 (BST) Mark Hills wrote: > On Mon, 29 Jun 2020, Giuliano Pochini wrote: > > > Since I could not reproduce that problem before, except in some rare > > random circumstances, I'm not a good tester at all. At most I can say > > that your patch does not make things worse :) > > What software are you using on the device, and are you using x86_64 and > dmix? > > I think some issues might be exaggerated by dmix which has a unique way > of opening the device several times. And then chromium exercises dmix a > lot with all of its threads/forks. That would I presume be how it > exercises races between pcm_pointer and interrupts. x86_64 now. When I wrote the driver I had a powermac. I also can test it on a x86_32 laptop with an Indigo-IO card. I tested both plughw and dmix, but I don't use the latter often. -- Giuliano.