From patchwork Fri May 6 14:10:07 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Christian_K=C3=B6nig?= X-Patchwork-Id: 12841201 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 42C5BC433F5 for ; Fri, 6 May 2022 14:10:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1442046AbiEFOOS (ORCPT ); Fri, 6 May 2022 10:14:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37442 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1442117AbiEFOOJ (ORCPT ); Fri, 6 May 2022 10:14:09 -0400 Received: from mail-ed1-x529.google.com (mail-ed1-x529.google.com [IPv6:2a00:1450:4864:20::529]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E0F9A6928D for ; Fri, 6 May 2022 07:10:14 -0700 (PDT) Received: by mail-ed1-x529.google.com with SMTP id p18so8854328edr.7 for ; Fri, 06 May 2022 07:10:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=QNt760DjFBo7HAT2HJsEWq9kQPdH1wnsqRHak7OGdbE=; b=C2w/6N6kbyW7wVnzjHEOL+TPmgmnkRUjE4m7nOD0xETPp8focvjo6CypBlsChAFjdH rIYi5xu4cR7HFotKDwR/oi2wvpCLJyQ/Iqq07iNVjrJbN8ISFmXogi0dAO3Jxx7SkmU4 MOyoIiT75Gh7/1zH//eMuwRZ5WI7NtDLtFwZ9R5qgDyQk9k2x27IR79vVvc7qetLDs9F mB4d0A7Of9GBAJR7GLYDVjHG6ftXGFXhlUKgr1JuV7gaCebYbNBSBkXunxic38FXLmrh TTkQjQOmES6doapjyvA0yToi+JAZXUG1ezejkLs28vHTZy8sX7P3ZtU32v9yjGenzF9V wWWA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=QNt760DjFBo7HAT2HJsEWq9kQPdH1wnsqRHak7OGdbE=; b=aDZKs+IAjtG7G1xIvcW1jdJKfldsSO/Gdn3YDIVVRDLGIYGgst9t+MwuGiFyDftcKQ m/j3+7KJ4CgWs9M5MQLt1QM9bZG458WMy2AWho24krF4Q+HycMEoVA+DlV2Uoiri/5l5 RGiX/groGqMhjKr/F9dgoCKJbnm7OoDRnVWNxVB9fxPK1vYuBX1J7mP3gummAcZpDBNm xqDaMfuOhab393cXJrIHrwpn+J01/vkjKqKEJLmz8KFpznd4Y+l9jzT1gBl6YklIzeDw Rw9eZUcbVLxriRNPsj317HtRj5Me9is6WwgfRLZdOizDoi9SImHIH+CLQju9mCwA56Q/ wP0Q== X-Gm-Message-State: AOAM5301VEEGaYvKqXk0uRvlPI+x8MraWkop+Yvk+14gqIS9nb7RAmF8 bTUbi83nVJsfbbMDYBlLQnNB98Sthfs= X-Google-Smtp-Source: ABdhPJxuGXiCo/++b2braxDlEZUUiIW9zHboM3NzkydRtAsGo5ltD8AOTRLv4lnCa/0vWeRSaQqT8w== X-Received: by 2002:a05:6402:3490:b0:427:b471:9e1e with SMTP id v16-20020a056402349000b00427b4719e1emr3624011edc.36.1651846213529; Fri, 06 May 2022 07:10:13 -0700 (PDT) Received: from able.fritz.box (p57b0b3fd.dip0.t-ipconnect.de. [87.176.179.253]) by smtp.gmail.com with ESMTPSA id jx3-20020a170907760300b006f3ef214e22sm1915415ejc.136.2022.05.06.07.10.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 06 May 2022 07:10:13 -0700 (PDT) From: " =?utf-8?q?Christian_K=C3=B6nig?= " X-Google-Original-From: =?utf-8?q?Christian_K=C3=B6nig?= To: daniel@ffwll.ch, linaro-mm-sig@lists.linaro.org, dri-devel@lists.freedesktop.org, linux-media@vger.kernel.org Cc: =?utf-8?q?Christian_K=C3=B6nig?= Subject: [PATCH 3/5] dma-buf: return only unsignaled fences in dma_fence_unwrap_for_each v3 Date: Fri, 6 May 2022 16:10:07 +0200 Message-Id: <20220506141009.18047-3-christian.koenig@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220506141009.18047-1-christian.koenig@amd.com> References: <20220506141009.18047-1-christian.koenig@amd.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org dma_fence_chain containers cleanup signaled fences automatically, so filter those out from arrays as well. v2: fix missing walk over the array v3: massively simplify the patch and actually update the description. Signed-off-by: Christian König Reviewed-by: Daniel Vetter --- include/linux/dma-fence-unwrap.h | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/include/linux/dma-fence-unwrap.h b/include/linux/dma-fence-unwrap.h index e7c219da4ed7..a4d342fef8e0 100644 --- a/include/linux/dma-fence-unwrap.h +++ b/include/linux/dma-fence-unwrap.h @@ -43,9 +43,13 @@ struct dma_fence *dma_fence_unwrap_next(struct dma_fence_unwrap *cursor); * Unwrap dma_fence_chain and dma_fence_array containers and deep dive into all * potential fences in them. If @head is just a normal fence only that one is * returned. + * + * Note that signalled fences are opportunistically filtered out, which + * means the iteration is potentially over no fence at all. */ #define dma_fence_unwrap_for_each(fence, cursor, head) \ for (fence = dma_fence_unwrap_first(head, cursor); fence; \ - fence = dma_fence_unwrap_next(cursor)) + fence = dma_fence_unwrap_next(cursor)) \ + if (!dma_fence_is_signaled(fence)) #endif