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=-8.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham 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 06581C433DB for ; Fri, 8 Jan 2021 16:00:56 +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 B2E5423884 for ; Fri, 8 Jan 2021 16:00:55 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B2E5423884 Authentication-Results: mail.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=etezian.org 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 5458889BB2; Fri, 8 Jan 2021 16:00:55 +0000 (UTC) X-Greylist: delayed 2543 seconds by postgrey-1.36 at gabe; Fri, 08 Jan 2021 16:00:54 UTC Received: from 3.mo69.mail-out.ovh.net (3.mo69.mail-out.ovh.net [188.165.52.203]) by gabe.freedesktop.org (Postfix) with ESMTPS id 27E2B89BB2 for ; Fri, 8 Jan 2021 16:00:54 +0000 (UTC) Received: from player737.ha.ovh.net (unknown [10.108.54.119]) by mo69.mail-out.ovh.net (Postfix) with ESMTP id 1BCA6A555B for ; Fri, 8 Jan 2021 16:55:50 +0100 (CET) Received: from etezian.org (213-243-141-64.bb.dnainternet.fi [213.243.141.64]) (Authenticated sender: andi@etezian.org) by player737.ha.ovh.net (Postfix) with ESMTPSA id 5189E105F2DF6; Fri, 8 Jan 2021 15:55:48 +0000 (UTC) Authentication-Results: garm.ovh; auth=pass (GARM-95G001fb553c8b-32a1-4cb1-bfdc-538ee973f8c3, 83D1C09382E53F50CE2429AE6C9B6AA8FD9DCB87) smtp.auth=andi@etezian.org X-OVh-ClientIp: 213.243.141.64 Date: Fri, 8 Jan 2021 17:55:46 +0200 From: Andi Shyti To: Chris Wilson Message-ID: References: <20210107221724.10036-1-chris@chris-wilson.co.uk> <20210107221724.10036-3-chris@chris-wilson.co.uk> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20210107221724.10036-3-chris@chris-wilson.co.uk> X-Ovh-Tracer-Id: 9260808212455408137 X-VR-SPAMSTATE: OK X-VR-SPAMSCORE: -100 X-VR-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrgedujedrvdeghedgudegucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecuqfggjfdpvefjgfevmfevgfenuceurghilhhouhhtmecuhedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmnecujfgurhepfffhvffukfhfgggtuggjsehttdertddttddvnecuhfhrohhmpeetnhguihcuufhhhihtihcuoegrnhguihesvghtvgiiihgrnhdrohhrgheqnecuggftrfgrthhtvghrnheptdfgudduhfefueeujeefieehtdeftefggeevhefgueellefhudetgeeikeduieefnecukfhppedtrddtrddtrddtpddvudefrddvgeefrddugedurdeigeenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepmhhouggvpehsmhhtphdqohhuthdphhgvlhhopehplhgrhigvrhejfeejrdhhrgdrohhvhhdrnhgvthdpihhnvghtpedtrddtrddtrddtpdhmrghilhhfrhhomheprghnughisegvthgviihirghnrdhorhhgpdhrtghpthhtohepihhnthgvlhdqghhfgieslhhishhtshdrfhhrvggvuggvshhkthhophdrohhrgh Subject: Re: [Intel-gfx] [PATCH 3/5] drm/i915/gt: Only retire on the last breadcrumb if the last request 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" Hi Chris, On Thu, Jan 07, 2021 at 10:17:22PM +0000, Chris Wilson wrote: > We use the completion of the last active breadcrumb to retire the > requests along a timeline. This is purely opportunistic as nothing > guarantees that any particular timeline is terminated by a breadcrumb; > except for the parking the engine. We explicitly add a breadcrumb to > parking the engine so that we park quickly and do an explicit retire > upon signaling to reduce the latency dramatically. > > With scheduling, we anticipate retiring completed timelines as a matter > of course. Performing the same action from inside the breadcrumbs is > intended to provide similar functionality for legacy ringbuffer > submission. > > Signed-off-by: Chris Wilson Reviewed-by: Andi Shyti Andi _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx