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_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 ED0A9C4332B for ; Sun, 22 Mar 2020 19:47:17 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (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 C08FB20719 for ; Sun, 22 Mar 2020 19:47:17 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C08FB20719 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=intel-gfx-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 5327D6E09E; Sun, 22 Mar 2020 19:47:17 +0000 (UTC) Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by gabe.freedesktop.org (Postfix) with ESMTPS id 42F4D6E09E for ; Sun, 22 Mar 2020 19:47:16 +0000 (UTC) IronPort-SDR: gDhCNknFKQi7u7SfvQzax1ZAAoryZDq1hOjxbH4mW/0rFFbgr3IvWJKsSKag8t5dqY15awXIgS D4iHNf+6YnKw== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Mar 2020 12:47:15 -0700 IronPort-SDR: eZtWTfMzfHMNvfhIodBWuqUv2BCxXlBIuqkpmz4H+v/P9/8AR5J+98lRhNnWkGsfMvqN8HCLbk 3Bu8dmIO8DzQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.72,293,1580803200"; d="scan'208";a="239223405" Received: from adixit-mobl.amr.corp.intel.com (HELO adixit-arch.intel.com) ([10.212.246.88]) by fmsmga008.fm.intel.com with ESMTP; 22 Mar 2020 12:47:14 -0700 Date: Sun, 22 Mar 2020 12:47:14 -0700 Message-ID: <8736a0dvel.wl-ashutosh.dixit@intel.com> From: "Dixit, Ashutosh" To: Umesh Nerlige Ramappa , Lionel G Landwerlin In-Reply-To: <877dzddmmc.wl-ashutosh.dixit@intel.com> References: <20200319225203.29679-1-umesh.nerlige.ramappa@intel.com> <20200319225203.29679-2-umesh.nerlige.ramappa@intel.com> <87zhc9p9vx.wl-ashutosh.dixit@intel.com> <877dzddmmc.wl-ashutosh.dixit@intel.com> User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue) FLIM/1.14.9 (=?ISO-8859-4?Q?Goj=F2?=) APEL/10.8 EasyPG/1.0.0 Emacs/26 (x86_64-pc-linux-gnu) MULE/6.0 (HANACHIRUSATO) MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Subject: Re: [Intel-gfx] [PATCH 1/3] drm/i915/perf: rework aging tail workaround X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: intel-gfx@lists.freedesktop.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" On Sat, 21 Mar 2020 21:44:43 -0700, Dixit, Ashutosh wrote: > > Actually a couple of further improvements to the loop above are > possible. First there is no reason to start at previous_tail, we can just > start at the aligned hw_tail itself. Unless we deliberately want to wait and delay declaring the data as valid, i.e. we are really not sure what is happening and it seems "safer" to wait for an extra report. _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx