From patchwork Thu Jul 7 16:36:02 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Bob Beckett X-Patchwork-Id: 12909944 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id BF871CCA479 for ; Thu, 7 Jul 2022 16:37:18 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 73B2010FF86; Thu, 7 Jul 2022 16:36:52 +0000 (UTC) Received: from madras.collabora.co.uk (madras.collabora.co.uk [46.235.227.172]) by gabe.freedesktop.org (Postfix) with ESMTPS id 0D426113E65; Thu, 7 Jul 2022 16:36:49 +0000 (UTC) Received: from hermes-devbox.fritz.box (82-71-8-225.dsl.in-addr.zen.co.uk [82.71.8.225]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: bbeckett) by madras.collabora.co.uk (Postfix) with ESMTPSA id 84BEA66019D4; Thu, 7 Jul 2022 17:36:47 +0100 (BST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1657211807; bh=vcV9d53cSiZS9S6xUBuwTwjcLWVgxyTlm1c7ldt4HDk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=SGPVkSDyvujh3ezfQJQv1vBbaQtKiuwr/nNkAlIzfjRgG9y6yws1btEGuGe2x4dyW z/+yVATrQGGrqXzi5CVEQcKn/cLhwLq5Q18lgUGA1eD2LMRQ2gJ8cH/xP1i08qte9i yk7yTdKfOySIa6qFYR4ru/Ij3ANOB8UHUISnd4d1nkZcJAJRJmAsyjhCL+2gtrgG27 vDl4BGZ1/SPeBbU3apVwZrcy+DbFY2DRB047z41i8JwmGqs2iYyRzzkdMaHT8ZudvK FnlGzqisnGW4IjxKcnj7vte5oXu8flD/J1athsyfzqnJummXOjJEc0h0o6bKlII6cA BoSCTFUp+kfjA== From: Robert Beckett To: dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , Tvrtko Ursulin , David Airlie , Daniel Vetter Subject: [PATCH v9 07/11] drm/i915: ttm move/clear logic fix Date: Thu, 7 Jul 2022 16:36:02 +0000 Message-Id: <20220707163606.1474111-8-bob.beckett@collabora.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220707163606.1474111-1-bob.beckett@collabora.com> References: <20220707163606.1474111-1-bob.beckett@collabora.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Robert Beckett , =?utf-8?q?Thomas_Hellstr?= =?utf-8?q?=C3=B6m?= , kernel@collabora.com, Matthew Auld , linux-kernel@vger.kernel.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" ttm managed buffers start off with system resource definitions and ttm_tt tracking structures allocated (though unpopulated). currently this prevents clearing of buffers on first move to desired placements. The desired behaviour is to clear user allocated buffers and any kernel buffers that specifically requests it only. Make the logic match the desired behaviour. Signed-off-by: Robert Beckett Reviewed-by: Thomas Hellström --- drivers/gpu/drm/i915/gem/i915_gem_ttm_move.c | 22 +++++++++++++++++++- 1 file changed, 21 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_ttm_move.c b/drivers/gpu/drm/i915/gem/i915_gem_ttm_move.c index 81c67ca9edda..a3f8fc056dbc 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_ttm_move.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_ttm_move.c @@ -3,6 +3,7 @@ * Copyright © 2021 Intel Corporation */ +#include "drm/ttm/ttm_tt.h" #include #include "i915_deps.h" @@ -476,6 +477,25 @@ __i915_ttm_move(struct ttm_buffer_object *bo, return fence; } +static bool +allow_clear(struct drm_i915_gem_object *obj, struct ttm_tt *ttm, struct ttm_resource *dst_mem) +{ + /* never clear stolen */ + if (dst_mem->mem_type == I915_PL_STOLEN) + return false; + /* + * we want to clear user buffers and any kernel buffers + * that specifically request clearing. + */ + if (obj->flags & I915_BO_ALLOC_USER) + return true; + + if (ttm && ttm->page_flags & TTM_TT_FLAG_ZERO_ALLOC) + return true; + + return false; +} + /** * i915_ttm_move - The TTM move callback used by i915. * @bo: The buffer object. @@ -526,7 +546,7 @@ int i915_ttm_move(struct ttm_buffer_object *bo, bool evict, return PTR_ERR(dst_rsgt); clear = !i915_ttm_cpu_maps_iomem(bo->resource) && (!ttm || !ttm_tt_is_populated(ttm)); - if (!(clear && ttm && !(ttm->page_flags & TTM_TT_FLAG_ZERO_ALLOC))) { + if (!clear || allow_clear(obj, ttm, dst_mem)) { struct i915_deps deps; i915_deps_init(&deps, GFP_KERNEL | __GFP_NORETRY | __GFP_NOWARN);