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 9293CC3A5A9 for ; Mon, 4 May 2020 13:54:43 +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 70FD020721 for ; Mon, 4 May 2020 13:54:43 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 70FD020721 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=chris-wilson.co.uk 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 1D5756E41A; Mon, 4 May 2020 13:54:43 +0000 (UTC) Received: from fireflyinternet.com (mail.fireflyinternet.com [109.228.58.192]) by gabe.freedesktop.org (Postfix) with ESMTPS id D379B6E41A for ; Mon, 4 May 2020 13:54:41 +0000 (UTC) X-Default-Received-SPF: pass (skip=forwardok (res=PASS)) x-ip-name=78.156.65.138; Received: from localhost (unverified [78.156.65.138]) by fireflyinternet.com (Firefly Internet (M1)) with ESMTP (TLS) id 21106944-1500050 for multiple; Mon, 04 May 2020 14:54:40 +0100 MIME-Version: 1.0 In-Reply-To: <20200504135030.19210-1-chris@chris-wilson.co.uk> References: <20200504135030.19210-1-chris@chris-wilson.co.uk> To: intel-gfx@lists.freedesktop.org From: Chris Wilson Message-ID: <158860047762.11660.349952004124805618@build.alporthouse.com> User-Agent: alot/0.8.1 Date: Mon, 04 May 2020 14:54:37 +0100 Subject: Re: [Intel-gfx] Wait-for-submit on future syncobj 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: kenneth@whitecape.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" Quoting Chris Wilson (2020-05-04 14:50:24) > A simplified example of out-of-order execution that is required by iris: > > struct drm_i915_gem_exec_object2 obj = { > .offset = 24 << 20, > .handle = future_submit_batch(i915, 24 << 20), > .flags = EXEC_OBJECT_PINNED, > }; > struct drm_i915_gem_exec_fence fence = { > .handle = syncobj_create(i915, 0), > }; > struct drm_i915_gem_execbuffer2 execbuf = { > .buffers_ptr = to_user_pointer(&obj), > .buffer_count = 1, > .cliprects_ptr = to_user_pointer(&fence), > .num_cliprects = 1, > .flags = engine | I915_EXEC_FENCE_ARRAY, > }; > uint32_t result; > int out; > > /* > * Here we submit client A waiting on client B, but internally client > * B has a semaphore that waits on client A. This relies on timeslicing > * to reorder B before A, even though userspace has asked to submit A before B _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx