From patchwork Mon Apr 11 19:24:51 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Bob Beckett X-Patchwork-Id: 12809555 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 6486DC433F5 for ; Mon, 11 Apr 2022 19:25:19 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 8E82010E032; Mon, 11 Apr 2022 19:25:12 +0000 (UTC) Received: from bhuna.collabora.co.uk (bhuna.collabora.co.uk [IPv6:2a00:1098:0:82:1000:25:2eeb:e3e3]) by gabe.freedesktop.org (Postfix) with ESMTPS id 0284010E032; Mon, 11 Apr 2022 19:25:11 +0000 (UTC) Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: bbeckett) with ESMTPSA id 988FC1F43CCC DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1649705109; bh=W1xeNHFFi2xCQW+DSKNFK1fRoffazm4NeTwtpFvqJkc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=BFtT30iW5ymMNLq/TNKy5KNfzD9fzG1lMnaxtGE2bW5d4Nr0FDQ2nGI1OhQFwfJbv /x0lhwaH3NBICgOTh2zA3TsMg08rLth+EBMeVNgJ7oAdk/wmJLLWRvt/M1CEuBqoAR 2UoZbf91jGAZ9uqhEhEjTNsW/pNCyOQh9nKlFebY+4svlMD/HvLhAbLyk3zSNuyCwn vIc1LTpx6I0G/AkEgMSGXOOUYXMYZ8VBwo5NIfYn1K3V20aGgqXNMML1Yq0B7yVkZB QsyuaUaQFd9kXIL/0bGQ9tJ+XmTGDvrehIuMz7gPhf9oB2T+2UU2hn7ZIB0GVW2NVk FESl26IrBl69g== 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 Date: Mon, 11 Apr 2022 19:24:51 +0000 Message-Id: <20220411192453.1000147-4-bob.beckett@collabora.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220411192453.1000147-1-bob.beckett@collabora.com> References: <20220411192453.1000147-1-bob.beckett@collabora.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 3/5] drm/i915: ttm move/clear logic fix 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: =?utf-8?q?Thomas_Hellstr=C3=B6m?= , Matthew Auld , linux-kernel@vger.kernel.org Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" 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 --- 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 9fe8132de3b2..9cf85f91edb5 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" @@ -470,6 +471,25 @@ __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. @@ -520,7 +540,7 @@ 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);