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=-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 ACA51C49361 for ; Thu, 17 Jun 2021 11:16:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9483F613B9 for ; Thu, 17 Jun 2021 11:16:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232452AbhFQLSO (ORCPT ); Thu, 17 Jun 2021 07:18:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49050 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231189AbhFQLSN (ORCPT ); Thu, 17 Jun 2021 07:18:13 -0400 Received: from mail-ed1-x52b.google.com (mail-ed1-x52b.google.com [IPv6:2a00:1450:4864:20::52b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2B185C061760 for ; Thu, 17 Jun 2021 04:16:06 -0700 (PDT) Received: by mail-ed1-x52b.google.com with SMTP id z12so3500997edc.1 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=f39rGZT5veqFjxPrNuWB2TiXiQPmiaT54Z6hZqWOR7o=; b=RNe0rSmGaU+5s+VrIHUQqg4naOJSdYobgxmh7WvqRqImdOpANraMgE5pu/oy4P8pYT M9zK4r41DUTtvR0QXRj0RanQYmkhu22PvsweGK4dPehIuBZ3ns+fzANw46807M+d7SpY GTtclYSaKX1Sp7dcLITRI2MvZVdQ2/cOo1M32uYF13zwvEv9XBjPycR0nUIzvE+wRMo+ IishIVHeVMElBcs3PrPppAxpaoClrphTrgInFhNwL+cFAdOce3ddFuE/ROgqzY+dT2W9 JWDY6fvVKR/JgWStdtSQrdYXTw4doKPqXEOrGzZ/SwYCNReYAEFlhTg+8GuEZcWF9UOo dXHw== 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=f39rGZT5veqFjxPrNuWB2TiXiQPmiaT54Z6hZqWOR7o=; b=RPM34uKI3xa70aLKkWdYf035BB2OUZvRf7F5iqO0WxOBEdBXsa1N4+r2kQSImJTpEb iixfB+1Ju8a8/e2g6NBu+cYlFPyVVWKnF90RslH5YxTeAZhhRdDxvS61m4ObdZDZL14O CCPOou1P8E3Xdjqu7cCrFPfpbpyxOtmLrwOZtDNbEe5Qw7SnBgaZ8aP9kF7F/Q2HfbL2 x44yboBfVRFyvp8l5+yQhHOEnT2ZWt+xvB3ssgCtUnLM1siOI0kjJBan+sogmZ4bQfLn 9KBCTd2ZxxBPHbGBPSgu1YU7yDarWzPLWfjZpQFWILhSAkW7oyLQWq3LzlkW/Pe9cAGr PjJw== X-Gm-Message-State: AOAM532bpWDGOKpUVjUT8txmLZr7YvxYjAGEQLMSnDhP3t3TProMIZny M/hMWamHUAHWgqlzdZBGxek= X-Google-Smtp-Source: ABdhPJzAxNQq7o0c8Az9z4kWtTT6sk40psjeZ0p7jq+xVfK4Wgh4poK36RFnx2T6ZmZk0Jy7KIbgzw== X-Received: by 2002:a05:6402:190a:: with SMTP id e10mr5759983edz.160.1623928564796; Thu, 17 Jun 2021 04:16:04 -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 04:16:04 -0700 (PDT) From: "=?UTF-8?q?Christian=20K=C3=B6nig?=" X-Google-Original-From: =?UTF-8?q?Christian=20K=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 05/16] dma-buf: use new iterator in dma_resv_wait_timeout Date: Thu, 17 Jun 2021 13:15:47 +0200 Message-Id: <20210617111558.28486-6-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 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 | 64 +++++--------------------------------- 1 file changed, 7 insertions(+), 57 deletions(-) diff --git a/drivers/dma-buf/dma-resv.c b/drivers/dma-buf/dma-resv.c index b77bf46c0f48..5192cf4271ac 100644 --- a/drivers/dma-buf/dma-resv.c +++ b/drivers/dma-buf/dma-resv.c @@ -564,74 +564,24 @@ long dma_resv_wait_timeout(struct dma_resv *obj, bool wait_all, bool intr, unsigned long timeout) { long ret = timeout ? timeout : 1; - unsigned int seq, shared_count; + struct dma_resv_cursor cursor; struct dma_fence *fence; - int i; -retry: - shared_count = 0; - seq = read_seqcount_begin(&obj->seq); rcu_read_lock(); - i = -1; - - fence = dma_resv_excl_fence(obj); - if (fence && !test_bit(DMA_FENCE_FLAG_SIGNALED_BIT, &fence->flags)) { - if (!dma_fence_get_rcu(fence)) - goto unlock_retry; + dma_resv_for_each_fence_unlocked(obj, &cursor, wait_all, fence) { + rcu_read_unlock(); - if (dma_fence_is_signaled(fence)) { + ret = dma_fence_wait_timeout(fence, intr, ret); + if (ret <= 0) { dma_fence_put(fence); - fence = NULL; + return ret; } - } else { - fence = NULL; - } - - if (wait_all) { - struct dma_resv_list *fobj = dma_resv_shared_list(obj); - - if (fobj) - shared_count = fobj->shared_count; - - for (i = 0; !fence && i < shared_count; ++i) { - struct dma_fence *lfence; - - lfence = rcu_dereference(fobj->shared[i]); - if (test_bit(DMA_FENCE_FLAG_SIGNALED_BIT, - &lfence->flags)) - continue; - - if (!dma_fence_get_rcu(lfence)) - goto unlock_retry; - - if (dma_fence_is_signaled(lfence)) { - dma_fence_put(lfence); - continue; - } - - fence = lfence; - break; - } + rcu_read_lock(); } - rcu_read_unlock(); - if (fence) { - if (read_seqcount_retry(&obj->seq, seq)) { - dma_fence_put(fence); - goto retry; - } - ret = dma_fence_wait_timeout(fence, intr, ret); - dma_fence_put(fence); - if (ret > 0 && wait_all && (i + 1 < shared_count)) - goto retry; - } return ret; - -unlock_retry: - rcu_read_unlock(); - goto retry; } EXPORT_SYMBOL_GPL(dma_resv_wait_timeout); -- 2.25.1