From patchwork Thu Jun 17 11:15:48 2021 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: 12327519 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=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 EC627C2B9F4 for ; Thu, 17 Jun 2021 11:16:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D519161369 for ; Thu, 17 Jun 2021 11:16:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232457AbhFQLSQ (ORCPT ); Thu, 17 Jun 2021 07:18:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49054 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232453AbhFQLSP (ORCPT ); Thu, 17 Jun 2021 07:18:15 -0400 Received: from mail-ed1-x532.google.com (mail-ed1-x532.google.com [IPv6:2a00:1450:4864:20::532]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C0F95C061574 for ; Thu, 17 Jun 2021 04:16:06 -0700 (PDT) Received: by mail-ed1-x532.google.com with SMTP id s6so3427149edu.10 for ; Thu, 17 Jun 2021 04:16:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:subject:date:message-id:in-reply-to:references:mime-version :content-transfer-encoding; bh=Xa2i71Ri2eK/e91UCCTXEAoquyui6jF43BKEv04gN4g=; b=J4G7oyFYVe/U+4ZAFn6M8m4z7Y24tHmXJPLZkUlymA1ekUAOM4VnvwV19yW7Txo/C/ QyY271dLeV6GK7cz/0wNgveeMKZFxeAZQrV06VU2lAkmNimfAEpwfO+VlsNHaQDGi12X AgXYTEEOUY/JngrYoedtySNu2ZdWifo4EEkT9FLZmdDORsDbYui0QKIwJ6P5ACcRJj4i TVddfMXrm+Y9dBDb0TWnfAmB1LcWfUhYkKsUlUekwaEZpNVH5v6z7vUxMq4+S9P9kx2i rP/SD+UDsKrOr6Xgr3Y2g/U+4w735YyPIZOho+WV5a9e0TphJPeR2PrLciTY1cGZ060a etwQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=Xa2i71Ri2eK/e91UCCTXEAoquyui6jF43BKEv04gN4g=; b=Q/SNGbEYXH24F7eyokwhIaegb0Udilmq93pjV4BgpCp3Gx1N3mThmeBLP/QtQS7f1s T3b+GtXV4WXblfUuA9L188LgsWB2eycVUvhZbLdNCpWTSbxPVF4cr+SEGFJGWwUWrdPc FDGXrCWyDpW4go7g3x/oFdLpoc2R8siy9fnqVj12kuvgAoMDCmkNQ89uv8t1w7ClfTHZ LqqsJKIsCXdV9NOo0X5Nh6wmkLQBK25B/s5i6Zz+GmZiL6LNowjA39JOq75+Yp0GIOnc Jp1Wy5CpXOyacJKVXOFFQtyp1ONTxO3Ow8pyEuPFHcfthDKjdvIvm5hE5egFBo4ZtLLV lRYg== X-Gm-Message-State: AOAM530b5Q3uMEtYjSmVRXdIJf6LxRh/zPylTP4hcey5jDBC5xE+jUy2 RjK8cYziagFlH6Ikh4JUqBI= X-Google-Smtp-Source: ABdhPJwtK+PmMG0EvZiApB5Ui9GYadZi0QPgMNTTpHdQN5LAPkkC9DhaLZn5j6xJ1lZxbulacF4yYQ== X-Received: by 2002:aa7:ce03:: with SMTP id d3mr5732594edv.360.1623928565462; Thu, 17 Jun 2021 04:16:05 -0700 (PDT) Received: from abel.fritz.box ([2a02:908:1252:fb60:8534:5e76:1ee5:f3ad]) by smtp.gmail.com with ESMTPSA id y10sm3531353ejm.76.2021.06.17.04.16.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 17 Jun 2021 04:16:05 -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, sumit.semwal@linaro.org, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, linux-media@vger.kernel.org Subject: [PATCH 06/16] dma-buf: use new iterator in dma_resv_test_signaled Date: Thu, 17 Jun 2021 13:15:48 +0200 Message-Id: <20210617111558.28486-7-christian.koenig@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210617111558.28486-1-christian.koenig@amd.com> References: <20210617111558.28486-1-christian.koenig@amd.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org This makes the function much simpler since the complex retry logic is now handled elsewhere. Signed-off-by: Christian König --- drivers/dma-buf/dma-resv.c | 54 +++++--------------------------------- 1 file changed, 7 insertions(+), 47 deletions(-) diff --git a/drivers/dma-buf/dma-resv.c b/drivers/dma-buf/dma-resv.c index 5192cf4271ac..85e07becdb93 100644 --- a/drivers/dma-buf/dma-resv.c +++ b/drivers/dma-buf/dma-resv.c @@ -586,22 +586,6 @@ long dma_resv_wait_timeout(struct dma_resv *obj, bool wait_all, bool intr, EXPORT_SYMBOL_GPL(dma_resv_wait_timeout); -static inline int dma_resv_test_signaled_single(struct dma_fence *passed_fence) -{ - struct dma_fence *fence, *lfence = passed_fence; - int ret = 1; - - if (!test_bit(DMA_FENCE_FLAG_SIGNALED_BIT, &lfence->flags)) { - fence = dma_fence_get_rcu(lfence); - if (!fence) - return -1; - - ret = !!dma_fence_is_signaled(fence); - dma_fence_put(fence); - } - return ret; -} - /** * dma_resv_test_signaled - Test if a reservation object's fences have been * signaled. @@ -616,43 +600,19 @@ static inline int dma_resv_test_signaled_single(struct dma_fence *passed_fence) */ bool dma_resv_test_signaled(struct dma_resv *obj, bool test_all) { + struct dma_resv_cursor cursor; struct dma_fence *fence; - unsigned int seq; - int ret; rcu_read_lock(); -retry: - ret = true; - seq = read_seqcount_begin(&obj->seq); - - if (test_all) { - struct dma_resv_list *fobj = dma_resv_shared_list(obj); - unsigned int i, shared_count; - - shared_count = fobj ? fobj->shared_count : 0; - for (i = 0; i < shared_count; ++i) { - fence = rcu_dereference(fobj->shared[i]); - ret = dma_resv_test_signaled_single(fence); - if (ret < 0) - goto retry; - else if (!ret) - break; + dma_resv_for_each_fence_unlocked(obj, &cursor, test_all, fence) { + if (!dma_fence_is_signaled(fence)) { + rcu_read_unlock(); + dma_fence_put(fence); + return false; } } - - fence = dma_resv_excl_fence(obj); - if (ret && fence) { - ret = dma_resv_test_signaled_single(fence); - if (ret < 0) - goto retry; - - } - - if (read_seqcount_retry(&obj->seq, seq)) - goto retry; - rcu_read_unlock(); - return ret; + return true; } EXPORT_SYMBOL_GPL(dma_resv_test_signaled);