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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E3B8EC433F5 for ; Wed, 29 Sep 2021 15:31:45 +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 6738B61159 for ; Wed, 29 Sep 2021 15:31:45 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 6738B61159 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=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 0A5AA16EE; Wed, 29 Sep 2021 17:30:54 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 0A5AA16EE DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1632929504; bh=2ZByO7fNkdh88BNmo5N3eYxk1ZraPvbstr1z+I7kTBk=; h=Subject:To:References:From:Date:In-Reply-To:Cc:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=gLNAlJGkOJ+3+cFl5J5E3zQj/spKWzzTGSyFIWKL2OZzqiuLED1Jm0E3WYdOc6wxT MUaYW+6oTt18QDMvf8hL1zy/hnn6sh9ViLnvL9y+2ZP3hz98rijTPJTbzylBr5RXCT whPFDWQicz8HYYqgKsZin3jkQf/O3l+lGPeX16yU= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 4BF09F804E2; Wed, 29 Sep 2021 17:30:32 +0200 (CEST) Received: by alsa1.perex.cz (Postfix, from userid 50401) id EF333F801F7; Wed, 29 Sep 2021 17:30:25 +0200 (CEST) Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) (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 19570F80272 for ; Wed, 29 Sep 2021 17:30:13 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 19570F80272 X-IronPort-AV: E=McAfee;i="6200,9189,10122"; a="225037008" X-IronPort-AV: E=Sophos;i="5.85,332,1624345200"; d="scan'208";a="225037008" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Sep 2021 08:30:12 -0700 X-IronPort-AV: E=Sophos;i="5.85,332,1624345200"; d="scan'208";a="588091631" Received: from ibarchen-mobl.amr.corp.intel.com (HELO [10.209.150.234]) ([10.209.150.234]) by orsmga004-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Sep 2021 08:30:12 -0700 Subject: Re: [PATCH v2 0/2] ALSA: hda: Reduce CPU hog with SKL+ position reporting To: Takashi Iwai , alsa-devel@alsa-project.org References: <20210929072934.6809-1-tiwai@suse.de> From: Pierre-Louis Bossart Message-ID: <76e121e0-c8c2-3da0-d7fc-a96ff2014afd@linux.intel.com> Date: Wed, 29 Sep 2021 09:54:57 -0500 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0 Thunderbird/78.13.0 MIME-Version: 1.0 In-Reply-To: <20210929072934.6809-1-tiwai@suse.de> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Cc: Jens Axboe 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 9/29/21 2:29 AM, Takashi Iwai wrote: > Hi, > > this is a v2 patch set for reducing the CPU hog with the HD-audio PCM > position reporting. The first patch is almost same, while the second > patch is added to take back to the position buffer as suggested by > Pierre. > > > Takashi > > v1: https://lore.kernel.org/r/20210910141002.32749-1-tiwai@suse.de > > === > > Takashi Iwai (2): > ALSA: hda: Reduce udelay() at SKL+ position reporting > ALSA: hda: Use position buffer for SKL+ again Reviewed-by: Pierre-Louis Bossart